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1 | // Created on: 2015-02-20 |
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2 | // Created by: Denis BOGOLEPOV |
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3 | // Copyright (c) 2015 OPEN CASCADE SAS |
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4 | // |
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5 | // This file is part of Open CASCADE Technology software library. |
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6 | // |
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7 | // This library is free software; you can redistribute it and/or modify it under |
8 | // the terms of the GNU Lesser General Public License version 2.1 as published |
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9 | // by the Free Software Foundation, with special exception defined in the file |
10 | // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT |
11 | // distribution for complete text of the license and disclaimer of any warranty. |
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12 | // |
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13 | // Alternatively, this file may be used under the terms of Open CASCADE |
14 | // commercial license or contractual agreement. |
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15 | |
c357e426 |
16 | #include <OpenGl_View.hxx> |
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17 | |
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18 | #include <Graphic3d_TextureParams.hxx> |
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19 | #include <OpenGl_PrimitiveArray.hxx> |
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20 | #include <OpenGl_VertexBuffer.hxx> |
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21 | #include <OpenGl_GlCore44.hxx> |
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22 | #include <OSD_Protection.hxx> |
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23 | #include <OSD_File.hxx> |
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24 | |
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25 | #include "../Shaders/Shaders_RaytraceBase_vs.pxx" |
26 | #include "../Shaders/Shaders_RaytraceBase_fs.pxx" |
27 | #include "../Shaders/Shaders_PathtraceBase_fs.pxx" |
28 | #include "../Shaders/Shaders_RaytraceRender_fs.pxx" |
29 | #include "../Shaders/Shaders_RaytraceSmooth_fs.pxx" |
30 | #include "../Shaders/Shaders_Display_fs.pxx" |
31 | |
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32 | //! Use this macro to output ray-tracing debug info |
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33 | // #define RAY_TRACE_PRINT_INFO |
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34 | |
35 | #ifdef RAY_TRACE_PRINT_INFO |
36 | #include <OSD_Timer.hxx> |
37 | #endif |
38 | |
b6472664 |
39 | namespace |
40 | { |
41 | static const OpenGl_Vec4 THE_WHITE_COLOR (1.0f, 1.0f, 1.0f, 1.0f); |
42 | static const OpenGl_Vec4 THE_BLACK_COLOR (0.0f, 0.0f, 0.0f, 1.0f); |
43 | } |
44 | |
cc8cbabe |
45 | namespace |
46 | { |
47 | //! Defines OpenGL texture samplers. |
48 | static const Graphic3d_TextureUnit OpenGl_RT_EnvironmentMapTexture = Graphic3d_TextureUnit_0; |
49 | |
50 | static const Graphic3d_TextureUnit OpenGl_RT_SceneNodeInfoTexture = Graphic3d_TextureUnit_1; |
51 | static const Graphic3d_TextureUnit OpenGl_RT_SceneMinPointTexture = Graphic3d_TextureUnit_2; |
52 | static const Graphic3d_TextureUnit OpenGl_RT_SceneMaxPointTexture = Graphic3d_TextureUnit_3; |
53 | static const Graphic3d_TextureUnit OpenGl_RT_SceneTransformTexture = Graphic3d_TextureUnit_4; |
54 | |
55 | static const Graphic3d_TextureUnit OpenGl_RT_GeometryVertexTexture = Graphic3d_TextureUnit_5; |
56 | static const Graphic3d_TextureUnit OpenGl_RT_GeometryNormalTexture = Graphic3d_TextureUnit_6; |
57 | static const Graphic3d_TextureUnit OpenGl_RT_GeometryTexCrdTexture = Graphic3d_TextureUnit_7; |
58 | static const Graphic3d_TextureUnit OpenGl_RT_GeometryTriangTexture = Graphic3d_TextureUnit_8; |
59 | |
60 | static const Graphic3d_TextureUnit OpenGl_RT_RaytraceMaterialTexture = Graphic3d_TextureUnit_9; |
61 | static const Graphic3d_TextureUnit OpenGl_RT_RaytraceLightSrcTexture = Graphic3d_TextureUnit_10; |
62 | |
63 | static const Graphic3d_TextureUnit OpenGl_RT_FsaaInputTexture = Graphic3d_TextureUnit_11; |
64 | static const Graphic3d_TextureUnit OpenGl_RT_PrevAccumTexture = Graphic3d_TextureUnit_12; |
65 | |
66 | static const Graphic3d_TextureUnit OpenGl_RT_RaytraceDepthTexture = Graphic3d_TextureUnit_13; |
67 | } |
68 | |
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69 | // ======================================================================= |
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70 | // function : updateRaytraceGeometry |
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71 | // purpose : Updates 3D scene geometry for ray-tracing |
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72 | // ======================================================================= |
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73 | Standard_Boolean OpenGl_View::updateRaytraceGeometry (const RaytraceUpdateMode theMode, |
74 | const Standard_Integer theViewId, |
75 | const Handle(OpenGl_Context)& theGlContext) |
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76 | { |
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77 | // In 'check' mode (OpenGl_GUM_CHECK) the scene geometry is analyzed for |
78 | // modifications. This is light-weight procedure performed on each frame |
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79 | if (theMode == OpenGl_GUM_CHECK) |
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80 | { |
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81 | if (myRaytraceLayerListState != myZLayers.ModificationStateOfRaytracable()) |
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82 | { |
83 | return updateRaytraceGeometry (OpenGl_GUM_PREPARE, theViewId, theGlContext); |
84 | } |
85 | } |
84c71f29 |
86 | else if (theMode == OpenGl_GUM_PREPARE) |
87 | { |
88 | myRaytraceGeometry.ClearMaterials(); |
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89 | |
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90 | myArrayToTrianglesMap.clear(); |
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91 | |
92 | myIsRaytraceDataValid = Standard_False; |
93 | } |
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94 | |
95 | // The set of processed structures (reflected to ray-tracing) |
96 | // This set is used to remove out-of-date records from the |
97 | // hash map of structures |
98 | std::set<const OpenGl_Structure*> anElements; |
99 | |
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100 | // Set to store all currently visible OpenGL primitive arrays |
101 | // applicable for ray-tracing |
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102 | std::set<Standard_Size> anArrayIDs; |
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103 | |
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104 | // Set to store all non-raytracable elements allowing tracking |
105 | // of changes in OpenGL scene (only for path tracing) |
106 | std::set<Standard_Integer> aNonRaytraceIDs; |
107 | |
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108 | for (NCollection_List<Handle(Graphic3d_Layer)>::Iterator aLayerIter (myZLayers.Layers()); aLayerIter.More(); aLayerIter.Next()) |
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109 | { |
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110 | const Handle(OpenGl_Layer)& aLayer = aLayerIter.Value(); |
111 | if (aLayer->NbStructures() == 0 |
112 | || !aLayer->LayerSettings().IsRaytracable() |
113 | || aLayer->LayerSettings().IsImmediate()) |
114 | { |
115 | continue; |
116 | } |
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117 | |
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118 | const Graphic3d_ArrayOfIndexedMapOfStructure& aStructArray = aLayer->ArrayOfStructures(); |
68333c8f |
119 | for (Standard_Integer anIndex = 0; anIndex < aStructArray.Length(); ++anIndex) |
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120 | { |
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121 | for (OpenGl_Structure::StructIterator aStructIt (aStructArray.Value (anIndex)); aStructIt.More(); aStructIt.Next()) |
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122 | { |
123 | const OpenGl_Structure* aStructure = aStructIt.Value(); |
124 | |
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125 | if (theMode == OpenGl_GUM_CHECK) |
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126 | { |
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127 | if (toUpdateStructure (aStructure)) |
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128 | { |
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129 | return updateRaytraceGeometry (OpenGl_GUM_PREPARE, theViewId, theGlContext); |
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130 | } |
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131 | else if (aStructure->IsVisible() && myRaytraceParameters.GlobalIllumination) |
132 | { |
133 | aNonRaytraceIDs.insert (aStructure->highlight ? aStructure->Id : -aStructure->Id); |
134 | } |
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135 | } |
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136 | else if (theMode == OpenGl_GUM_PREPARE) |
137 | { |
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138 | if (!aStructure->IsRaytracable() || !aStructure->IsVisible()) |
a1954302 |
139 | { |
a272ed94 |
140 | continue; |
141 | } |
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142 | else if (!aStructure->ViewAffinity.IsNull() && !aStructure->ViewAffinity->IsVisible (theViewId)) |
a272ed94 |
143 | { |
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144 | continue; |
a1954302 |
145 | } |
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146 | |
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147 | for (OpenGl_Structure::GroupIterator aGroupIter (aStructure->Groups()); aGroupIter.More(); aGroupIter.Next()) |
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148 | { |
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149 | // Extract OpenGL elements from the group (primitives arrays) |
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150 | for (const OpenGl_ElementNode* aNode = aGroupIter.Value()->FirstNode(); aNode != NULL; aNode = aNode->next) |
151 | { |
152 | OpenGl_PrimitiveArray* aPrimArray = dynamic_cast<OpenGl_PrimitiveArray*> (aNode->elem); |
153 | |
154 | if (aPrimArray != NULL) |
155 | { |
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156 | anArrayIDs.insert (aPrimArray->GetUID()); |
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157 | } |
158 | } |
159 | } |
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160 | } |
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161 | else if (theMode == OpenGl_GUM_REBUILD) |
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162 | { |
163 | if (!aStructure->IsRaytracable()) |
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164 | { |
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165 | continue; |
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166 | } |
167 | else if (addRaytraceStructure (aStructure, theGlContext)) |
168 | { |
169 | anElements.insert (aStructure); // structure was processed |
170 | } |
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171 | } |
172 | } |
173 | } |
174 | } |
175 | |
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176 | if (theMode == OpenGl_GUM_PREPARE) |
177 | { |
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178 | BVH_ObjectSet<Standard_ShortReal, 3>::BVH_ObjectList anUnchangedObjects; |
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179 | |
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180 | // Filter out unchanged objects so only their transformations and materials |
181 | // will be updated (and newly added objects will be processed from scratch) |
182 | for (Standard_Integer anObjIdx = 0; anObjIdx < myRaytraceGeometry.Size(); ++anObjIdx) |
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183 | { |
184 | OpenGl_TriangleSet* aTriangleSet = dynamic_cast<OpenGl_TriangleSet*> ( |
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185 | myRaytraceGeometry.Objects().ChangeValue (anObjIdx).operator->()); |
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186 | |
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187 | if (aTriangleSet == NULL) |
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188 | { |
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189 | continue; |
190 | } |
191 | |
192 | if (anArrayIDs.find (aTriangleSet->AssociatedPArrayID()) != anArrayIDs.end()) |
193 | { |
194 | anUnchangedObjects.Append (myRaytraceGeometry.Objects().Value (anObjIdx)); |
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195 | |
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196 | myArrayToTrianglesMap[aTriangleSet->AssociatedPArrayID()] = aTriangleSet; |
84c71f29 |
197 | } |
198 | } |
199 | |
200 | myRaytraceGeometry.Objects() = anUnchangedObjects; |
201 | |
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202 | return updateRaytraceGeometry (OpenGl_GUM_REBUILD, theViewId, theGlContext); |
84c71f29 |
203 | } |
91c60b57 |
204 | else if (theMode == OpenGl_GUM_REBUILD) |
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205 | { |
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206 | // Actualize the hash map of structures - remove out-of-date records |
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207 | std::map<const OpenGl_Structure*, StructState>::iterator anIter = myStructureStates.begin(); |
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208 | |
209 | while (anIter != myStructureStates.end()) |
210 | { |
211 | if (anElements.find (anIter->first) == anElements.end()) |
212 | { |
213 | myStructureStates.erase (anIter++); |
214 | } |
215 | else |
216 | { |
217 | ++anIter; |
218 | } |
219 | } |
220 | |
221 | // Actualize OpenGL layer list state |
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222 | myRaytraceLayerListState = myZLayers.ModificationStateOfRaytracable(); |
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223 | |
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224 | // Rebuild two-level acceleration structure |
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225 | myRaytraceGeometry.ProcessAcceleration(); |
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226 | |
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227 | myRaytraceSceneRadius = 2.f /* scale factor */ * std::max ( |
228 | myRaytraceGeometry.Box().CornerMin().cwiseAbs().maxComp(), |
229 | myRaytraceGeometry.Box().CornerMax().cwiseAbs().maxComp()); |
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230 | |
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231 | const BVH_Vec3f aSize = myRaytraceGeometry.Box().Size(); |
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232 | |
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233 | myRaytraceSceneEpsilon = Max (1.0e-6f, 1.0e-4f * aSize.Modulus()); |
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234 | |
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235 | return uploadRaytraceData (theGlContext); |
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236 | } |
237 | |
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238 | if (myRaytraceParameters.GlobalIllumination) |
239 | { |
240 | Standard_Boolean toRestart = |
241 | aNonRaytraceIDs.size() != myNonRaytraceStructureIDs.size(); |
242 | |
243 | for (std::set<Standard_Integer>::iterator anID = aNonRaytraceIDs.begin(); anID != aNonRaytraceIDs.end() && !toRestart; ++anID) |
244 | { |
245 | if (myNonRaytraceStructureIDs.find (*anID) == myNonRaytraceStructureIDs.end()) |
246 | { |
247 | toRestart = Standard_True; |
248 | } |
249 | } |
250 | |
251 | if (toRestart) |
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252 | { |
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253 | myAccumFrames = 0; |
3a9b5dc8 |
254 | } |
189f85a3 |
255 | |
256 | myNonRaytraceStructureIDs = aNonRaytraceIDs; |
257 | } |
258 | |
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259 | return Standard_True; |
260 | } |
261 | |
262 | // ======================================================================= |
189f85a3 |
263 | // function : toUpdateStructure |
e2da917a |
264 | // purpose : Checks to see if the structure is modified |
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265 | // ======================================================================= |
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266 | Standard_Boolean OpenGl_View::toUpdateStructure (const OpenGl_Structure* theStructure) |
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267 | { |
268 | if (!theStructure->IsRaytracable()) |
269 | { |
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270 | if (theStructure->ModificationState() > 0) |
271 | { |
272 | theStructure->ResetModificationState(); |
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273 | |
274 | return Standard_True; // ray-trace element was removed - need to rebuild |
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275 | } |
276 | |
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277 | return Standard_False; // did not contain ray-trace elements |
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278 | } |
279 | |
d4aaad5b |
280 | std::map<const OpenGl_Structure*, StructState>::iterator aStructState = myStructureStates.find (theStructure); |
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281 | |
d4aaad5b |
282 | if (aStructState == myStructureStates.end() || aStructState->second.StructureState != theStructure->ModificationState()) |
91c60b57 |
283 | { |
d4aaad5b |
284 | return Standard_True; |
285 | } |
286 | else if (theStructure->InstancedStructure() != NULL) |
287 | { |
288 | return aStructState->second.InstancedState != theStructure->InstancedStructure()->ModificationState(); |
91c60b57 |
289 | } |
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290 | |
d4aaad5b |
291 | return Standard_False; |
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292 | } |
293 | |
25ef750e |
294 | // ======================================================================= |
189f85a3 |
295 | // function : buildTextureTransform |
25ef750e |
296 | // purpose : Constructs texture transformation matrix |
297 | // ======================================================================= |
189f85a3 |
298 | void buildTextureTransform (const Handle(Graphic3d_TextureParams)& theParams, BVH_Mat4f& theMatrix) |
25ef750e |
299 | { |
300 | theMatrix.InitIdentity(); |
cc8cbabe |
301 | if (theParams.IsNull()) |
302 | { |
303 | return; |
304 | } |
25ef750e |
305 | |
306 | // Apply scaling |
307 | const Graphic3d_Vec2& aScale = theParams->Scale(); |
308 | |
309 | theMatrix.ChangeValue (0, 0) *= aScale.x(); |
310 | theMatrix.ChangeValue (1, 0) *= aScale.x(); |
311 | theMatrix.ChangeValue (2, 0) *= aScale.x(); |
312 | theMatrix.ChangeValue (3, 0) *= aScale.x(); |
313 | |
314 | theMatrix.ChangeValue (0, 1) *= aScale.y(); |
315 | theMatrix.ChangeValue (1, 1) *= aScale.y(); |
316 | theMatrix.ChangeValue (2, 1) *= aScale.y(); |
317 | theMatrix.ChangeValue (3, 1) *= aScale.y(); |
318 | |
319 | // Apply translation |
320 | const Graphic3d_Vec2 aTrans = -theParams->Translation(); |
321 | |
322 | theMatrix.ChangeValue (0, 3) = theMatrix.GetValue (0, 0) * aTrans.x() + |
323 | theMatrix.GetValue (0, 1) * aTrans.y(); |
324 | |
325 | theMatrix.ChangeValue (1, 3) = theMatrix.GetValue (1, 0) * aTrans.x() + |
326 | theMatrix.GetValue (1, 1) * aTrans.y(); |
327 | |
328 | theMatrix.ChangeValue (2, 3) = theMatrix.GetValue (2, 0) * aTrans.x() + |
329 | theMatrix.GetValue (2, 1) * aTrans.y(); |
330 | |
331 | // Apply rotation |
332 | const Standard_ShortReal aSin = std::sin ( |
333 | -theParams->Rotation() * static_cast<Standard_ShortReal> (M_PI / 180.0)); |
334 | const Standard_ShortReal aCos = std::cos ( |
335 | -theParams->Rotation() * static_cast<Standard_ShortReal> (M_PI / 180.0)); |
336 | |
337 | BVH_Mat4f aRotationMat; |
338 | aRotationMat.SetValue (0, 0, aCos); |
339 | aRotationMat.SetValue (1, 1, aCos); |
340 | aRotationMat.SetValue (0, 1, -aSin); |
341 | aRotationMat.SetValue (1, 0, aSin); |
342 | |
343 | theMatrix = theMatrix * aRotationMat; |
344 | } |
345 | |
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346 | // ======================================================================= |
189f85a3 |
347 | // function : convertMaterial |
e276548b |
348 | // purpose : Creates ray-tracing material properties |
349 | // ======================================================================= |
bf5f0ca2 |
350 | OpenGl_RaytraceMaterial OpenGl_View::convertMaterial (const OpenGl_Aspects* theAspect, |
91c60b57 |
351 | const Handle(OpenGl_Context)& theGlContext) |
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352 | { |
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353 | OpenGl_RaytraceMaterial aResMat; |
25ef750e |
354 | |
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355 | const Graphic3d_MaterialAspect& aSrcMat = theAspect->Aspect()->FrontMaterial(); |
356 | const OpenGl_Vec3& aMatCol = theAspect->Aspect()->InteriorColor(); |
357 | const float aShine = 128.0f * float(aSrcMat.Shininess()); |
b6472664 |
358 | |
61168418 |
359 | const OpenGl_Vec3& aSrcAmb = aSrcMat.AmbientColor(); |
360 | const OpenGl_Vec3& aSrcDif = aSrcMat.DiffuseColor(); |
361 | const OpenGl_Vec3& aSrcSpe = aSrcMat.SpecularColor(); |
362 | const OpenGl_Vec3& aSrcEms = aSrcMat.EmissiveColor(); |
363 | switch (aSrcMat.MaterialType()) |
b6472664 |
364 | { |
61168418 |
365 | case Graphic3d_MATERIAL_ASPECT: |
366 | { |
367 | aResMat.Ambient .SetValues (aSrcAmb * aMatCol, 1.0f); |
368 | aResMat.Diffuse .SetValues (aSrcDif * aMatCol, -1.0f); // -1 is no texture |
369 | aResMat.Emission.SetValues (aSrcEms * aMatCol, 1.0f); |
370 | break; |
371 | } |
372 | case Graphic3d_MATERIAL_PHYSIC: |
373 | { |
374 | aResMat.Ambient .SetValues (aSrcAmb, 1.0f); |
375 | aResMat.Diffuse .SetValues (aSrcDif, -1.0f); // -1 is no texture |
376 | aResMat.Emission.SetValues (aSrcEms, 1.0f); |
377 | break; |
378 | } |
b6472664 |
379 | } |
380 | |
b6472664 |
381 | { |
61168418 |
382 | // interior color is always ignored for Specular |
383 | aResMat.Specular.SetValues (aSrcSpe, aShine); |
384 | const Standard_ShortReal aMaxRefl = Max (aResMat.Diffuse.x() + aResMat.Specular.x(), |
385 | Max (aResMat.Diffuse.y() + aResMat.Specular.y(), |
386 | aResMat.Diffuse.z() + aResMat.Specular.z())); |
b6472664 |
387 | const Standard_ShortReal aReflectionScale = 0.75f / aMaxRefl; |
61168418 |
388 | aResMat.Reflection.SetValues (aSrcSpe * aReflectionScale, 0.0f); |
b6472664 |
389 | } |
390 | |
391 | const float anIndex = (float )aSrcMat.RefractionIndex(); |
61168418 |
392 | aResMat.Transparency = BVH_Vec4f (aSrcMat.Alpha(), aSrcMat.Transparency(), |
393 | anIndex == 0 ? 1.0f : anIndex, |
394 | anIndex == 0 ? 1.0f : 1.0f / anIndex); |
25ef750e |
395 | |
ba00aab7 |
396 | aResMat.Ambient = theGlContext->Vec4FromQuantityColor (aResMat.Ambient); |
397 | aResMat.Diffuse = theGlContext->Vec4FromQuantityColor (aResMat.Diffuse); |
398 | aResMat.Specular = theGlContext->Vec4FromQuantityColor (aResMat.Specular); |
399 | aResMat.Emission = theGlContext->Vec4FromQuantityColor (aResMat.Emission); |
400 | |
189f85a3 |
401 | // Serialize physically-based material properties |
b6472664 |
402 | const Graphic3d_BSDF& aBSDF = aSrcMat.BSDF(); |
189f85a3 |
403 | |
61168418 |
404 | aResMat.BSDF.Kc = aBSDF.Kc; |
405 | aResMat.BSDF.Ks = aBSDF.Ks; |
406 | aResMat.BSDF.Kd = BVH_Vec4f (aBSDF.Kd, -1.f); // no texture |
407 | aResMat.BSDF.Kt = BVH_Vec4f (aBSDF.Kt, 0.f); |
408 | aResMat.BSDF.Le = BVH_Vec4f (aBSDF.Le, 0.f); |
189f85a3 |
409 | |
61168418 |
410 | aResMat.BSDF.Absorption = aBSDF.Absorption; |
189f85a3 |
411 | |
61168418 |
412 | aResMat.BSDF.FresnelCoat = aBSDF.FresnelCoat.Serialize (); |
413 | aResMat.BSDF.FresnelBase = aBSDF.FresnelBase.Serialize (); |
189f85a3 |
414 | |
415 | // Handle material textures |
cc8cbabe |
416 | if (!theAspect->Aspect()->ToMapTexture()) |
25ef750e |
417 | { |
61168418 |
418 | return aResMat; |
cc8cbabe |
419 | } |
91c60b57 |
420 | |
cc8cbabe |
421 | const Handle(OpenGl_TextureSet)& aTextureSet = theAspect->TextureSet (theGlContext); |
422 | if (aTextureSet.IsNull() |
423 | || aTextureSet->IsEmpty() |
424 | || aTextureSet->First().IsNull()) |
425 | { |
61168418 |
426 | return aResMat; |
cc8cbabe |
427 | } |
91c60b57 |
428 | |
cc8cbabe |
429 | if (theGlContext->HasRayTracingTextures()) |
430 | { |
431 | const Handle(OpenGl_Texture)& aTexture = aTextureSet->First(); |
61168418 |
432 | buildTextureTransform (aTexture->Sampler()->Parameters(), aResMat.TextureTransform); |
91c60b57 |
433 | |
cc8cbabe |
434 | // write texture ID to diffuse w-component |
61168418 |
435 | aResMat.Diffuse.w() = aResMat.BSDF.Kd.w() = static_cast<Standard_ShortReal> (myRaytraceGeometry.AddTexture (aTexture)); |
cc8cbabe |
436 | } |
437 | else if (!myIsRaytraceWarnTextures) |
438 | { |
61168418 |
439 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_PORTABILITY, 0, GL_DEBUG_SEVERITY_HIGH, |
440 | "Warning: texturing in Ray-Trace requires GL_ARB_bindless_texture extension which is missing. " |
441 | "Please try to update graphics card driver. At the moment textures will be ignored."); |
cc8cbabe |
442 | myIsRaytraceWarnTextures = Standard_True; |
25ef750e |
443 | } |
e276548b |
444 | |
61168418 |
445 | return aResMat; |
e276548b |
446 | } |
447 | |
448 | // ======================================================================= |
189f85a3 |
449 | // function : addRaytraceStructure |
e276548b |
450 | // purpose : Adds OpenGL structure to ray-traced scene geometry |
451 | // ======================================================================= |
91c60b57 |
452 | Standard_Boolean OpenGl_View::addRaytraceStructure (const OpenGl_Structure* theStructure, |
453 | const Handle(OpenGl_Context)& theGlContext) |
e276548b |
454 | { |
e276548b |
455 | if (!theStructure->IsVisible()) |
456 | { |
d4aaad5b |
457 | myStructureStates[theStructure] = StructState (theStructure); |
91c60b57 |
458 | |
e276548b |
459 | return Standard_True; |
460 | } |
461 | |
462 | // Get structure material |
2831708b |
463 | OpenGl_RaytraceMaterial aDefaultMaterial; |
1f7f5a90 |
464 | Standard_Boolean aResult = addRaytraceGroups (theStructure, aDefaultMaterial, theStructure->Transformation(), theGlContext); |
0717ddc1 |
465 | |
466 | // Process all connected OpenGL structures |
d4aaad5b |
467 | const OpenGl_Structure* anInstanced = theStructure->InstancedStructure(); |
468 | |
469 | if (anInstanced != NULL && anInstanced->IsRaytracable()) |
0717ddc1 |
470 | { |
1f7f5a90 |
471 | aResult &= addRaytraceGroups (anInstanced, aDefaultMaterial, theStructure->Transformation(), theGlContext); |
0717ddc1 |
472 | } |
473 | |
d4aaad5b |
474 | myStructureStates[theStructure] = StructState (theStructure); |
91c60b57 |
475 | |
476 | return aResult; |
0717ddc1 |
477 | } |
478 | |
479 | // ======================================================================= |
189f85a3 |
480 | // function : addRaytraceGroups |
0717ddc1 |
481 | // purpose : Adds OpenGL groups to ray-traced scene geometry |
482 | // ======================================================================= |
8c820969 |
483 | Standard_Boolean OpenGl_View::addRaytraceGroups (const OpenGl_Structure* theStructure, |
484 | const OpenGl_RaytraceMaterial& theStructMat, |
1f7f5a90 |
485 | const Handle(Geom_Transformation)& theTrsf, |
8c820969 |
486 | const Handle(OpenGl_Context)& theGlContext) |
0717ddc1 |
487 | { |
1f7f5a90 |
488 | OpenGl_Mat4 aMat4; |
3e05329c |
489 | for (OpenGl_Structure::GroupIterator aGroupIter (theStructure->Groups()); aGroupIter.More(); aGroupIter.Next()) |
e276548b |
490 | { |
491 | // Get group material |
8c820969 |
492 | OpenGl_RaytraceMaterial aGroupMaterial; |
bf5f0ca2 |
493 | if (aGroupIter.Value()->GlAspects() != NULL) |
e276548b |
494 | { |
bf5f0ca2 |
495 | aGroupMaterial = convertMaterial (aGroupIter.Value()->GlAspects(), theGlContext); |
e276548b |
496 | } |
497 | |
8c820969 |
498 | Standard_Integer aMatID = static_cast<Standard_Integer> (myRaytraceGeometry.Materials.size()); |
e276548b |
499 | |
8c820969 |
500 | // Use group material if available, otherwise use structure material |
bf5f0ca2 |
501 | myRaytraceGeometry.Materials.push_back (aGroupIter.Value()->GlAspects() != NULL ? aGroupMaterial : theStructMat); |
e276548b |
502 | |
265d4508 |
503 | // Add OpenGL elements from group (extract primitives arrays and aspects) |
b64d84be |
504 | for (const OpenGl_ElementNode* aNode = aGroupIter.Value()->FirstNode(); aNode != NULL; aNode = aNode->next) |
e276548b |
505 | { |
bf5f0ca2 |
506 | OpenGl_Aspects* anAspect = dynamic_cast<OpenGl_Aspects*> (aNode->elem); |
91c60b57 |
507 | |
5322131b |
508 | if (anAspect != NULL) |
e276548b |
509 | { |
5322131b |
510 | aMatID = static_cast<Standard_Integer> (myRaytraceGeometry.Materials.size()); |
e276548b |
511 | |
91c60b57 |
512 | OpenGl_RaytraceMaterial aMaterial = convertMaterial (anAspect, theGlContext); |
e276548b |
513 | |
5322131b |
514 | myRaytraceGeometry.Materials.push_back (aMaterial); |
e276548b |
515 | } |
5322131b |
516 | else |
e276548b |
517 | { |
518 | OpenGl_PrimitiveArray* aPrimArray = dynamic_cast<OpenGl_PrimitiveArray*> (aNode->elem); |
84c71f29 |
519 | |
e276548b |
520 | if (aPrimArray != NULL) |
521 | { |
8d3f219f |
522 | std::map<Standard_Size, OpenGl_TriangleSet*>::iterator aSetIter = myArrayToTrianglesMap.find (aPrimArray->GetUID()); |
523 | |
84c71f29 |
524 | if (aSetIter != myArrayToTrianglesMap.end()) |
525 | { |
526 | OpenGl_TriangleSet* aSet = aSetIter->second; |
f5b72419 |
527 | opencascade::handle<BVH_Transform<Standard_ShortReal, 4> > aTransform = new BVH_Transform<Standard_ShortReal, 4>(); |
1f7f5a90 |
528 | if (!theTrsf.IsNull()) |
84c71f29 |
529 | { |
1f7f5a90 |
530 | theTrsf->Trsf().GetMat4 (aMat4); |
531 | aTransform->SetTransform (aMat4); |
84c71f29 |
532 | } |
91c60b57 |
533 | |
84c71f29 |
534 | aSet->SetProperties (aTransform); |
25ef750e |
535 | if (aSet->MaterialIndex() != OpenGl_TriangleSet::INVALID_MATERIAL && aSet->MaterialIndex() != aMatID) |
84c71f29 |
536 | { |
537 | aSet->SetMaterialIndex (aMatID); |
538 | } |
539 | } |
540 | else |
541 | { |
f5b72419 |
542 | if (Handle(OpenGl_TriangleSet) aSet = addRaytracePrimitiveArray (aPrimArray, aMatID, 0)) |
84c71f29 |
543 | { |
f5b72419 |
544 | opencascade::handle<BVH_Transform<Standard_ShortReal, 4> > aTransform = new BVH_Transform<Standard_ShortReal, 4>(); |
1f7f5a90 |
545 | if (!theTrsf.IsNull()) |
84c71f29 |
546 | { |
1f7f5a90 |
547 | theTrsf->Trsf().GetMat4 (aMat4); |
548 | aTransform->SetTransform (aMat4); |
84c71f29 |
549 | } |
550 | |
551 | aSet->SetProperties (aTransform); |
84c71f29 |
552 | myRaytraceGeometry.Objects().Append (aSet); |
553 | } |
554 | } |
e276548b |
555 | } |
556 | } |
557 | } |
e276548b |
558 | } |
559 | |
e276548b |
560 | return Standard_True; |
561 | } |
562 | |
563 | // ======================================================================= |
189f85a3 |
564 | // function : addRaytracePrimitiveArray |
e276548b |
565 | // purpose : Adds OpenGL primitive array to ray-traced scene geometry |
566 | // ======================================================================= |
f5b72419 |
567 | Handle(OpenGl_TriangleSet) OpenGl_View::addRaytracePrimitiveArray (const OpenGl_PrimitiveArray* theArray, |
568 | const Standard_Integer theMaterial, |
569 | const OpenGl_Mat4* theTransform) |
e276548b |
570 | { |
91c60b57 |
571 | const Handle(Graphic3d_BoundBuffer)& aBounds = theArray->Bounds(); |
871fa103 |
572 | const Handle(Graphic3d_IndexBuffer)& anIndices = theArray->Indices(); |
573 | const Handle(Graphic3d_Buffer)& anAttribs = theArray->Attributes(); |
91c60b57 |
574 | |
871fa103 |
575 | if (theArray->DrawMode() < GL_TRIANGLES |
91c60b57 |
576 | #ifndef GL_ES_VERSION_2_0 |
871fa103 |
577 | || theArray->DrawMode() > GL_POLYGON |
ca3c13d1 |
578 | #else |
579 | || theArray->DrawMode() > GL_TRIANGLE_FAN |
580 | #endif |
871fa103 |
581 | || anAttribs.IsNull()) |
e276548b |
582 | { |
f5b72419 |
583 | return Handle(OpenGl_TriangleSet)(); |
e276548b |
584 | } |
585 | |
25ef750e |
586 | OpenGl_Mat4 aNormalMatrix; |
25ef750e |
587 | if (theTransform != NULL) |
588 | { |
589 | Standard_ASSERT_RETURN (theTransform->Inverted (aNormalMatrix), |
590 | "Error: Failed to compute normal transformation matrix", NULL); |
591 | |
592 | aNormalMatrix.Transpose(); |
593 | } |
594 | |
f5b72419 |
595 | Handle(OpenGl_TriangleSet) aSet = new OpenGl_TriangleSet (theArray->GetUID(), myRaytraceBVHBuilder); |
e276548b |
596 | { |
871fa103 |
597 | aSet->Vertices.reserve (anAttribs->NbElements); |
91c60b57 |
598 | aSet->Normals.reserve (anAttribs->NbElements); |
599 | aSet->TexCrds.reserve (anAttribs->NbElements); |
25ef750e |
600 | |
871fa103 |
601 | const size_t aVertFrom = aSet->Vertices.size(); |
da87ddc3 |
602 | |
603 | Standard_Integer anAttribIndex = 0; |
604 | Standard_Size anAttribStride = 0; |
605 | if (const Standard_Byte* aPosData = anAttribs->AttributeData (Graphic3d_TOA_POS, anAttribIndex, anAttribStride)) |
265d4508 |
606 | { |
da87ddc3 |
607 | const Graphic3d_Attribute& anAttrib = anAttribs->Attribute (anAttribIndex); |
608 | if (anAttrib.DataType == Graphic3d_TOD_VEC2 |
609 | || anAttrib.DataType == Graphic3d_TOD_VEC3 |
610 | || anAttrib.DataType == Graphic3d_TOD_VEC4) |
871fa103 |
611 | { |
da87ddc3 |
612 | for (Standard_Integer aVertIter = 0; aVertIter < anAttribs->NbElements; ++aVertIter) |
871fa103 |
613 | { |
da87ddc3 |
614 | const float* aCoords = reinterpret_cast<const float*> (aPosData + anAttribStride * aVertIter); |
615 | aSet->Vertices.push_back (BVH_Vec3f (aCoords[0], aCoords[1], anAttrib.DataType != Graphic3d_TOD_VEC2 ? aCoords[2] : 0.0f)); |
871fa103 |
616 | } |
617 | } |
da87ddc3 |
618 | } |
619 | if (const Standard_Byte* aNormData = anAttribs->AttributeData (Graphic3d_TOA_NORM, anAttribIndex, anAttribStride)) |
620 | { |
621 | const Graphic3d_Attribute& anAttrib = anAttribs->Attribute (anAttribIndex); |
622 | if (anAttrib.DataType == Graphic3d_TOD_VEC3 |
623 | || anAttrib.DataType == Graphic3d_TOD_VEC4) |
871fa103 |
624 | { |
da87ddc3 |
625 | for (Standard_Integer aVertIter = 0; aVertIter < anAttribs->NbElements; ++aVertIter) |
871fa103 |
626 | { |
da87ddc3 |
627 | aSet->Normals.push_back (*reinterpret_cast<const Graphic3d_Vec3*> (aNormData + anAttribStride * aVertIter)); |
25ef750e |
628 | } |
629 | } |
da87ddc3 |
630 | } |
631 | if (const Standard_Byte* aTexData = anAttribs->AttributeData (Graphic3d_TOA_UV, anAttribIndex, anAttribStride)) |
632 | { |
633 | const Graphic3d_Attribute& anAttrib = anAttribs->Attribute (anAttribIndex); |
634 | if (anAttrib.DataType == Graphic3d_TOD_VEC2) |
25ef750e |
635 | { |
da87ddc3 |
636 | for (Standard_Integer aVertIter = 0; aVertIter < anAttribs->NbElements; ++aVertIter) |
25ef750e |
637 | { |
da87ddc3 |
638 | aSet->TexCrds.push_back (*reinterpret_cast<const Graphic3d_Vec2*> (aTexData + anAttribStride * aVertIter)); |
871fa103 |
639 | } |
640 | } |
265d4508 |
641 | } |
e276548b |
642 | |
871fa103 |
643 | if (aSet->Normals.size() != aSet->Vertices.size()) |
265d4508 |
644 | { |
871fa103 |
645 | for (Standard_Integer aVertIter = 0; aVertIter < anAttribs->NbElements; ++aVertIter) |
265d4508 |
646 | { |
25ef750e |
647 | aSet->Normals.push_back (BVH_Vec3f()); |
648 | } |
649 | } |
650 | |
651 | if (aSet->TexCrds.size() != aSet->Vertices.size()) |
652 | { |
653 | for (Standard_Integer aVertIter = 0; aVertIter < anAttribs->NbElements; ++aVertIter) |
654 | { |
655 | aSet->TexCrds.push_back (BVH_Vec2f()); |
265d4508 |
656 | } |
871fa103 |
657 | } |
e276548b |
658 | |
25ef750e |
659 | if (theTransform != NULL) |
871fa103 |
660 | { |
661 | for (size_t aVertIter = aVertFrom; aVertIter < aSet->Vertices.size(); ++aVertIter) |
662 | { |
25ef750e |
663 | BVH_Vec3f& aVertex = aSet->Vertices[aVertIter]; |
664 | |
91c60b57 |
665 | BVH_Vec4f aTransVertex = *theTransform * |
666 | BVH_Vec4f (aVertex.x(), aVertex.y(), aVertex.z(), 1.f); |
25ef750e |
667 | |
668 | aVertex = BVH_Vec3f (aTransVertex.x(), aTransVertex.y(), aTransVertex.z()); |
871fa103 |
669 | } |
670 | for (size_t aVertIter = aVertFrom; aVertIter < aSet->Normals.size(); ++aVertIter) |
671 | { |
25ef750e |
672 | BVH_Vec3f& aNormal = aSet->Normals[aVertIter]; |
673 | |
91c60b57 |
674 | BVH_Vec4f aTransNormal = aNormalMatrix * |
675 | BVH_Vec4f (aNormal.x(), aNormal.y(), aNormal.z(), 0.f); |
25ef750e |
676 | |
677 | aNormal = BVH_Vec3f (aTransNormal.x(), aTransNormal.y(), aTransNormal.z()); |
871fa103 |
678 | } |
e276548b |
679 | } |
680 | |
871fa103 |
681 | if (!aBounds.IsNull()) |
265d4508 |
682 | { |
91c60b57 |
683 | for (Standard_Integer aBound = 0, aBoundStart = 0; aBound < aBounds->NbBounds; ++aBound) |
265d4508 |
684 | { |
871fa103 |
685 | const Standard_Integer aVertNum = aBounds->Bounds[aBound]; |
e276548b |
686 | |
91c60b57 |
687 | if (!addRaytraceVertexIndices (*aSet, theMaterial, aVertNum, aBoundStart, *theArray)) |
265d4508 |
688 | { |
f5b72419 |
689 | aSet.Nullify(); |
690 | return Handle(OpenGl_TriangleSet)(); |
265d4508 |
691 | } |
692 | |
693 | aBoundStart += aVertNum; |
694 | } |
695 | } |
696 | else |
e276548b |
697 | { |
871fa103 |
698 | const Standard_Integer aVertNum = !anIndices.IsNull() ? anIndices->NbElements : anAttribs->NbElements; |
e276548b |
699 | |
91c60b57 |
700 | if (!addRaytraceVertexIndices (*aSet, theMaterial, aVertNum, 0, *theArray)) |
e276548b |
701 | { |
f5b72419 |
702 | aSet.Nullify(); |
703 | return Handle(OpenGl_TriangleSet)(); |
e276548b |
704 | } |
e276548b |
705 | } |
706 | } |
e276548b |
707 | |
265d4508 |
708 | if (aSet->Size() != 0) |
91c60b57 |
709 | { |
265d4508 |
710 | aSet->MarkDirty(); |
91c60b57 |
711 | } |
e276548b |
712 | |
265d4508 |
713 | return aSet; |
e276548b |
714 | } |
715 | |
716 | // ======================================================================= |
189f85a3 |
717 | // function : addRaytraceVertexIndices |
e276548b |
718 | // purpose : Adds vertex indices to ray-traced scene geometry |
719 | // ======================================================================= |
91c60b57 |
720 | Standard_Boolean OpenGl_View::addRaytraceVertexIndices (OpenGl_TriangleSet& theSet, |
721 | const Standard_Integer theMatID, |
722 | const Standard_Integer theCount, |
723 | const Standard_Integer theOffset, |
724 | const OpenGl_PrimitiveArray& theArray) |
e276548b |
725 | { |
871fa103 |
726 | switch (theArray.DrawMode()) |
e276548b |
727 | { |
91c60b57 |
728 | case GL_TRIANGLES: return addRaytraceTriangleArray (theSet, theMatID, theCount, theOffset, theArray.Indices()); |
729 | case GL_TRIANGLE_FAN: return addRaytraceTriangleFanArray (theSet, theMatID, theCount, theOffset, theArray.Indices()); |
730 | case GL_TRIANGLE_STRIP: return addRaytraceTriangleStripArray (theSet, theMatID, theCount, theOffset, theArray.Indices()); |
ca3c13d1 |
731 | #if !defined(GL_ES_VERSION_2_0) |
91c60b57 |
732 | case GL_QUAD_STRIP: return addRaytraceQuadrangleStripArray (theSet, theMatID, theCount, theOffset, theArray.Indices()); |
733 | case GL_QUADS: return addRaytraceQuadrangleArray (theSet, theMatID, theCount, theOffset, theArray.Indices()); |
734 | case GL_POLYGON: return addRaytracePolygonArray (theSet, theMatID, theCount, theOffset, theArray.Indices()); |
ca3c13d1 |
735 | #endif |
e276548b |
736 | } |
91c60b57 |
737 | |
871fa103 |
738 | return Standard_False; |
e276548b |
739 | } |
740 | |
741 | // ======================================================================= |
189f85a3 |
742 | // function : addRaytraceTriangleArray |
e276548b |
743 | // purpose : Adds OpenGL triangle array to ray-traced scene geometry |
744 | // ======================================================================= |
91c60b57 |
745 | Standard_Boolean OpenGl_View::addRaytraceTriangleArray (OpenGl_TriangleSet& theSet, |
746 | const Standard_Integer theMatID, |
747 | const Standard_Integer theCount, |
748 | const Standard_Integer theOffset, |
749 | const Handle(Graphic3d_IndexBuffer)& theIndices) |
e276548b |
750 | { |
265d4508 |
751 | if (theCount < 3) |
91c60b57 |
752 | { |
e276548b |
753 | return Standard_True; |
91c60b57 |
754 | } |
e276548b |
755 | |
871fa103 |
756 | theSet.Elements.reserve (theSet.Elements.size() + theCount / 3); |
265d4508 |
757 | |
871fa103 |
758 | if (!theIndices.IsNull()) |
e276548b |
759 | { |
265d4508 |
760 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 2; aVert += 3) |
e276548b |
761 | { |
871fa103 |
762 | theSet.Elements.push_back (BVH_Vec4i (theIndices->Index (aVert + 0), |
763 | theIndices->Index (aVert + 1), |
764 | theIndices->Index (aVert + 2), |
765 | theMatID)); |
e276548b |
766 | } |
767 | } |
768 | else |
769 | { |
265d4508 |
770 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 2; aVert += 3) |
e276548b |
771 | { |
91c60b57 |
772 | theSet.Elements.push_back (BVH_Vec4i (aVert + 0, aVert + 1, aVert + 2, theMatID)); |
e276548b |
773 | } |
774 | } |
775 | |
776 | return Standard_True; |
777 | } |
778 | |
779 | // ======================================================================= |
189f85a3 |
780 | // function : addRaytraceTriangleFanArray |
e276548b |
781 | // purpose : Adds OpenGL triangle fan array to ray-traced scene geometry |
782 | // ======================================================================= |
91c60b57 |
783 | Standard_Boolean OpenGl_View::addRaytraceTriangleFanArray (OpenGl_TriangleSet& theSet, |
784 | const Standard_Integer theMatID, |
785 | const Standard_Integer theCount, |
786 | const Standard_Integer theOffset, |
787 | const Handle(Graphic3d_IndexBuffer)& theIndices) |
e276548b |
788 | { |
265d4508 |
789 | if (theCount < 3) |
91c60b57 |
790 | { |
e276548b |
791 | return Standard_True; |
91c60b57 |
792 | } |
e276548b |
793 | |
871fa103 |
794 | theSet.Elements.reserve (theSet.Elements.size() + theCount - 2); |
265d4508 |
795 | |
871fa103 |
796 | if (!theIndices.IsNull()) |
e276548b |
797 | { |
265d4508 |
798 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 2; ++aVert) |
e276548b |
799 | { |
871fa103 |
800 | theSet.Elements.push_back (BVH_Vec4i (theIndices->Index (theOffset), |
801 | theIndices->Index (aVert + 1), |
802 | theIndices->Index (aVert + 2), |
803 | theMatID)); |
e276548b |
804 | } |
805 | } |
806 | else |
807 | { |
265d4508 |
808 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 2; ++aVert) |
e276548b |
809 | { |
871fa103 |
810 | theSet.Elements.push_back (BVH_Vec4i (theOffset, |
811 | aVert + 1, |
812 | aVert + 2, |
813 | theMatID)); |
e276548b |
814 | } |
815 | } |
816 | |
817 | return Standard_True; |
818 | } |
819 | |
820 | // ======================================================================= |
189f85a3 |
821 | // function : addRaytraceTriangleStripArray |
e276548b |
822 | // purpose : Adds OpenGL triangle strip array to ray-traced scene geometry |
823 | // ======================================================================= |
91c60b57 |
824 | Standard_Boolean OpenGl_View::addRaytraceTriangleStripArray (OpenGl_TriangleSet& theSet, |
825 | const Standard_Integer theMatID, |
826 | const Standard_Integer theCount, |
827 | const Standard_Integer theOffset, |
828 | const Handle(Graphic3d_IndexBuffer)& theIndices) |
e276548b |
829 | { |
265d4508 |
830 | if (theCount < 3) |
91c60b57 |
831 | { |
e276548b |
832 | return Standard_True; |
91c60b57 |
833 | } |
e276548b |
834 | |
871fa103 |
835 | theSet.Elements.reserve (theSet.Elements.size() + theCount - 2); |
265d4508 |
836 | |
871fa103 |
837 | if (!theIndices.IsNull()) |
e276548b |
838 | { |
265d4508 |
839 | for (Standard_Integer aVert = theOffset, aCW = 0; aVert < theOffset + theCount - 2; ++aVert, aCW = (aCW + 1) % 2) |
e276548b |
840 | { |
ad2a55b2 |
841 | theSet.Elements.push_back (BVH_Vec4i (theIndices->Index (aVert + (aCW ? 1 : 0)), |
842 | theIndices->Index (aVert + (aCW ? 0 : 1)), |
871fa103 |
843 | theIndices->Index (aVert + 2), |
844 | theMatID)); |
e276548b |
845 | } |
846 | } |
847 | else |
848 | { |
265d4508 |
849 | for (Standard_Integer aVert = theOffset, aCW = 0; aVert < theOffset + theCount - 2; ++aVert, aCW = (aCW + 1) % 2) |
e276548b |
850 | { |
ad2a55b2 |
851 | theSet.Elements.push_back (BVH_Vec4i (aVert + (aCW ? 1 : 0), |
852 | aVert + (aCW ? 0 : 1), |
871fa103 |
853 | aVert + 2, |
854 | theMatID)); |
e276548b |
855 | } |
856 | } |
857 | |
858 | return Standard_True; |
859 | } |
860 | |
861 | // ======================================================================= |
189f85a3 |
862 | // function : addRaytraceQuadrangleArray |
e276548b |
863 | // purpose : Adds OpenGL quad array to ray-traced scene geometry |
864 | // ======================================================================= |
91c60b57 |
865 | Standard_Boolean OpenGl_View::addRaytraceQuadrangleArray (OpenGl_TriangleSet& theSet, |
866 | const Standard_Integer theMatID, |
867 | const Standard_Integer theCount, |
868 | const Standard_Integer theOffset, |
869 | const Handle(Graphic3d_IndexBuffer)& theIndices) |
e276548b |
870 | { |
265d4508 |
871 | if (theCount < 4) |
91c60b57 |
872 | { |
e276548b |
873 | return Standard_True; |
91c60b57 |
874 | } |
e276548b |
875 | |
871fa103 |
876 | theSet.Elements.reserve (theSet.Elements.size() + theCount / 2); |
265d4508 |
877 | |
871fa103 |
878 | if (!theIndices.IsNull()) |
e276548b |
879 | { |
265d4508 |
880 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 3; aVert += 4) |
e276548b |
881 | { |
871fa103 |
882 | theSet.Elements.push_back (BVH_Vec4i (theIndices->Index (aVert + 0), |
883 | theIndices->Index (aVert + 1), |
884 | theIndices->Index (aVert + 2), |
885 | theMatID)); |
886 | theSet.Elements.push_back (BVH_Vec4i (theIndices->Index (aVert + 0), |
887 | theIndices->Index (aVert + 2), |
888 | theIndices->Index (aVert + 3), |
889 | theMatID)); |
e276548b |
890 | } |
891 | } |
892 | else |
893 | { |
265d4508 |
894 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 3; aVert += 4) |
e276548b |
895 | { |
871fa103 |
896 | theSet.Elements.push_back (BVH_Vec4i (aVert + 0, aVert + 1, aVert + 2, |
897 | theMatID)); |
898 | theSet.Elements.push_back (BVH_Vec4i (aVert + 0, aVert + 2, aVert + 3, |
899 | theMatID)); |
e276548b |
900 | } |
901 | } |
902 | |
903 | return Standard_True; |
904 | } |
905 | |
906 | // ======================================================================= |
189f85a3 |
907 | // function : addRaytraceQuadrangleStripArray |
e276548b |
908 | // purpose : Adds OpenGL quad strip array to ray-traced scene geometry |
909 | // ======================================================================= |
91c60b57 |
910 | Standard_Boolean OpenGl_View::addRaytraceQuadrangleStripArray (OpenGl_TriangleSet& theSet, |
911 | const Standard_Integer theMatID, |
912 | const Standard_Integer theCount, |
913 | const Standard_Integer theOffset, |
914 | const Handle(Graphic3d_IndexBuffer)& theIndices) |
e276548b |
915 | { |
265d4508 |
916 | if (theCount < 4) |
91c60b57 |
917 | { |
e276548b |
918 | return Standard_True; |
91c60b57 |
919 | } |
e276548b |
920 | |
871fa103 |
921 | theSet.Elements.reserve (theSet.Elements.size() + 2 * theCount - 6); |
265d4508 |
922 | |
871fa103 |
923 | if (!theIndices.IsNull()) |
e276548b |
924 | { |
265d4508 |
925 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 3; aVert += 2) |
e276548b |
926 | { |
871fa103 |
927 | theSet.Elements.push_back (BVH_Vec4i (theIndices->Index (aVert + 0), |
928 | theIndices->Index (aVert + 1), |
929 | theIndices->Index (aVert + 2), |
930 | theMatID)); |
931 | |
932 | theSet.Elements.push_back (BVH_Vec4i (theIndices->Index (aVert + 1), |
933 | theIndices->Index (aVert + 3), |
934 | theIndices->Index (aVert + 2), |
935 | theMatID)); |
e276548b |
936 | } |
937 | } |
938 | else |
939 | { |
265d4508 |
940 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 3; aVert += 2) |
e276548b |
941 | { |
871fa103 |
942 | theSet.Elements.push_back (BVH_Vec4i (aVert + 0, |
943 | aVert + 1, |
944 | aVert + 2, |
945 | theMatID)); |
946 | |
947 | theSet.Elements.push_back (BVH_Vec4i (aVert + 1, |
948 | aVert + 3, |
949 | aVert + 2, |
950 | theMatID)); |
e276548b |
951 | } |
952 | } |
953 | |
954 | return Standard_True; |
955 | } |
956 | |
957 | // ======================================================================= |
189f85a3 |
958 | // function : addRaytracePolygonArray |
e276548b |
959 | // purpose : Adds OpenGL polygon array to ray-traced scene geometry |
960 | // ======================================================================= |
91c60b57 |
961 | Standard_Boolean OpenGl_View::addRaytracePolygonArray (OpenGl_TriangleSet& theSet, |
962 | const Standard_Integer theMatID, |
963 | const Standard_Integer theCount, |
964 | const Standard_Integer theOffset, |
965 | const Handle(Graphic3d_IndexBuffer)& theIndices) |
e276548b |
966 | { |
265d4508 |
967 | if (theCount < 3) |
91c60b57 |
968 | { |
e276548b |
969 | return Standard_True; |
91c60b57 |
970 | } |
e276548b |
971 | |
871fa103 |
972 | theSet.Elements.reserve (theSet.Elements.size() + theCount - 2); |
265d4508 |
973 | |
871fa103 |
974 | if (!theIndices.IsNull()) |
e276548b |
975 | { |
265d4508 |
976 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 2; ++aVert) |
e276548b |
977 | { |
871fa103 |
978 | theSet.Elements.push_back (BVH_Vec4i (theIndices->Index (theOffset), |
979 | theIndices->Index (aVert + 1), |
980 | theIndices->Index (aVert + 2), |
981 | theMatID)); |
e276548b |
982 | } |
983 | } |
984 | else |
985 | { |
265d4508 |
986 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 2; ++aVert) |
e276548b |
987 | { |
871fa103 |
988 | theSet.Elements.push_back (BVH_Vec4i (theOffset, |
989 | aVert + 1, |
990 | aVert + 2, |
991 | theMatID)); |
e276548b |
992 | } |
993 | } |
994 | |
995 | return Standard_True; |
996 | } |
997 | |
189f85a3 |
998 | const TCollection_AsciiString OpenGl_View::ShaderSource::EMPTY_PREFIX; |
999 | |
e276548b |
1000 | // ======================================================================= |
fc73a202 |
1001 | // function : Source |
1002 | // purpose : Returns shader source combined with prefix |
e276548b |
1003 | // ======================================================================= |
91c60b57 |
1004 | TCollection_AsciiString OpenGl_View::ShaderSource::Source() const |
e276548b |
1005 | { |
f8ae3605 |
1006 | const TCollection_AsciiString aVersion = "#version 140"; |
e276548b |
1007 | |
fc73a202 |
1008 | if (myPrefix.IsEmpty()) |
e276548b |
1009 | { |
fc73a202 |
1010 | return aVersion + "\n" + mySource; |
e276548b |
1011 | } |
1012 | |
fc73a202 |
1013 | return aVersion + "\n" + myPrefix + "\n" + mySource; |
e276548b |
1014 | } |
1015 | |
1016 | // ======================================================================= |
ee5befae |
1017 | // function : LoadFromFiles |
fc73a202 |
1018 | // purpose : Loads shader source from specified files |
e276548b |
1019 | // ======================================================================= |
ee5befae |
1020 | Standard_Boolean OpenGl_View::ShaderSource::LoadFromFiles (const TCollection_AsciiString* theFileNames, |
1021 | const TCollection_AsciiString& thePrefix) |
e276548b |
1022 | { |
73722cc9 |
1023 | myError.Clear(); |
fc73a202 |
1024 | mySource.Clear(); |
ee5befae |
1025 | myPrefix = thePrefix; |
1026 | |
73722cc9 |
1027 | TCollection_AsciiString aMissingFiles; |
189f85a3 |
1028 | for (Standard_Integer anIndex = 0; !theFileNames[anIndex].IsEmpty(); ++anIndex) |
fc73a202 |
1029 | { |
1030 | OSD_File aFile (theFileNames[anIndex]); |
73722cc9 |
1031 | if (aFile.Exists()) |
1032 | { |
1033 | aFile.Open (OSD_ReadOnly, OSD_Protection()); |
1034 | } |
1035 | if (!aFile.IsOpen()) |
1036 | { |
1037 | if (!aMissingFiles.IsEmpty()) |
1038 | { |
1039 | aMissingFiles += ", "; |
1040 | } |
1041 | aMissingFiles += TCollection_AsciiString("'") + theFileNames[anIndex] + "'"; |
1042 | continue; |
1043 | } |
1044 | else if (!aMissingFiles.IsEmpty()) |
1045 | { |
1046 | aFile.Close(); |
1047 | continue; |
1048 | } |
265d4508 |
1049 | |
fc73a202 |
1050 | TCollection_AsciiString aSource; |
fc73a202 |
1051 | aFile.Read (aSource, (Standard_Integer) aFile.Size()); |
fc73a202 |
1052 | if (!aSource.IsEmpty()) |
1053 | { |
1054 | mySource += TCollection_AsciiString ("\n") + aSource; |
1055 | } |
fc73a202 |
1056 | aFile.Close(); |
68333c8f |
1057 | } |
189f85a3 |
1058 | |
73722cc9 |
1059 | if (!aMissingFiles.IsEmpty()) |
1060 | { |
1061 | myError = TCollection_AsciiString("Shader files ") + aMissingFiles + " are missing or inaccessible"; |
1062 | return Standard_False; |
1063 | } |
1064 | return Standard_True; |
e276548b |
1065 | } |
1066 | |
ee5befae |
1067 | // ======================================================================= |
1068 | // function : LoadFromStrings |
1069 | // purpose : |
1070 | // ======================================================================= |
1071 | Standard_Boolean OpenGl_View::ShaderSource::LoadFromStrings (const TCollection_AsciiString* theStrings, |
1072 | const TCollection_AsciiString& thePrefix) |
1073 | { |
1074 | myError.Clear(); |
1075 | mySource.Clear(); |
1076 | myPrefix = thePrefix; |
1077 | |
1078 | for (Standard_Integer anIndex = 0; !theStrings[anIndex].IsEmpty(); ++anIndex) |
1079 | { |
1080 | TCollection_AsciiString aSource = theStrings[anIndex]; |
1081 | if (!aSource.IsEmpty()) |
1082 | { |
1083 | mySource += TCollection_AsciiString ("\n") + aSource; |
1084 | } |
1085 | } |
1086 | return Standard_True; |
1087 | } |
1088 | |
e276548b |
1089 | // ======================================================================= |
189f85a3 |
1090 | // function : generateShaderPrefix |
91c60b57 |
1091 | // purpose : Generates shader prefix based on current ray-tracing options |
1092 | // ======================================================================= |
1093 | TCollection_AsciiString OpenGl_View::generateShaderPrefix (const Handle(OpenGl_Context)& theGlContext) const |
1094 | { |
1095 | TCollection_AsciiString aPrefixString = |
1096 | TCollection_AsciiString ("#define STACK_SIZE ") + TCollection_AsciiString (myRaytraceParameters.StackSize) + "\n" + |
1097 | TCollection_AsciiString ("#define NB_BOUNCES ") + TCollection_AsciiString (myRaytraceParameters.NbBounces); |
1098 | |
1099 | if (myRaytraceParameters.TransparentShadows) |
1100 | { |
1101 | aPrefixString += TCollection_AsciiString ("\n#define TRANSPARENT_SHADOWS"); |
1102 | } |
ba00aab7 |
1103 | if (!theGlContext->ToRenderSRGB()) |
1104 | { |
1105 | aPrefixString += TCollection_AsciiString ("\n#define THE_SHIFT_sRGB"); |
1106 | } |
91c60b57 |
1107 | |
f483f2ed |
1108 | // If OpenGL driver supports bindless textures and texturing |
1109 | // is actually used, activate texturing in ray-tracing mode |
1110 | if (myRaytraceParameters.UseBindlessTextures && theGlContext->arbTexBindless != NULL) |
91c60b57 |
1111 | { |
1112 | aPrefixString += TCollection_AsciiString ("\n#define USE_TEXTURES") + |
1113 | TCollection_AsciiString ("\n#define MAX_TEX_NUMBER ") + TCollection_AsciiString (OpenGl_RaytraceGeometry::MAX_TEX_NUMBER); |
1114 | } |
1115 | |
3a9b5dc8 |
1116 | if (myRaytraceParameters.GlobalIllumination) // path tracing activated |
189f85a3 |
1117 | { |
1118 | aPrefixString += TCollection_AsciiString ("\n#define PATH_TRACING"); |
3a9b5dc8 |
1119 | |
1120 | if (myRaytraceParameters.AdaptiveScreenSampling) // adaptive screen sampling requested |
1121 | { |
e084dbbc |
1122 | if (theGlContext->IsGlGreaterEqual (4, 4)) |
3a9b5dc8 |
1123 | { |
66d1cdc6 |
1124 | aPrefixString += TCollection_AsciiString ("\n#define ADAPTIVE_SAMPLING"); |
e084dbbc |
1125 | if (myRaytraceParameters.AdaptiveScreenSamplingAtomic |
1126 | && theGlContext->CheckExtension ("GL_NV_shader_atomic_float")) |
1127 | { |
1128 | aPrefixString += TCollection_AsciiString ("\n#define ADAPTIVE_SAMPLING_ATOMIC"); |
1129 | } |
3a9b5dc8 |
1130 | } |
1131 | } |
b4327ba8 |
1132 | |
1133 | if (myRaytraceParameters.TwoSidedBsdfModels) // two-sided BSDFs requested |
1134 | { |
1135 | aPrefixString += TCollection_AsciiString ("\n#define TWO_SIDED_BXDF"); |
1136 | } |
eb85ed36 |
1137 | |
1138 | switch (myRaytraceParameters.ToneMappingMethod) |
1139 | { |
1140 | case Graphic3d_ToneMappingMethod_Disabled: |
1141 | break; |
1142 | case Graphic3d_ToneMappingMethod_Filmic: |
1143 | aPrefixString += TCollection_AsciiString ("\n#define TONE_MAPPING_FILMIC"); |
1144 | break; |
1145 | } |
189f85a3 |
1146 | } |
1147 | |
b27ab03d |
1148 | if (myRaytraceParameters.DepthOfField) |
1149 | { |
1150 | aPrefixString += TCollection_AsciiString("\n#define DEPTH_OF_FIELD"); |
1151 | } |
1152 | |
91c60b57 |
1153 | return aPrefixString; |
1154 | } |
1155 | |
1156 | // ======================================================================= |
189f85a3 |
1157 | // function : safeFailBack |
91c60b57 |
1158 | // purpose : Performs safe exit when shaders initialization fails |
1159 | // ======================================================================= |
1160 | Standard_Boolean OpenGl_View::safeFailBack (const TCollection_ExtendedString& theMessage, |
1161 | const Handle(OpenGl_Context)& theGlContext) |
1162 | { |
3b523c4c |
1163 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION, |
1164 | GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, theMessage); |
91c60b57 |
1165 | |
1166 | myRaytraceInitStatus = OpenGl_RT_FAIL; |
1167 | |
1168 | releaseRaytraceResources (theGlContext); |
1169 | |
1170 | return Standard_False; |
1171 | } |
1172 | |
1173 | // ======================================================================= |
189f85a3 |
1174 | // function : initShader |
fc73a202 |
1175 | // purpose : Creates new shader object with specified source |
e276548b |
1176 | // ======================================================================= |
91c60b57 |
1177 | Handle(OpenGl_ShaderObject) OpenGl_View::initShader (const GLenum theType, |
1178 | const ShaderSource& theSource, |
1179 | const Handle(OpenGl_Context)& theGlContext) |
e276548b |
1180 | { |
fc73a202 |
1181 | Handle(OpenGl_ShaderObject) aShader = new OpenGl_ShaderObject (theType); |
91c60b57 |
1182 | if (!aShader->Create (theGlContext)) |
e276548b |
1183 | { |
74413ca7 |
1184 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, |
1185 | TCollection_ExtendedString ("Error: Failed to create ") + |
1186 | (theType == GL_VERTEX_SHADER ? "vertex" : "fragment") + " shader object"); |
1187 | aShader->Release (theGlContext.get()); |
fc73a202 |
1188 | return Handle(OpenGl_ShaderObject)(); |
1189 | } |
e276548b |
1190 | |
74413ca7 |
1191 | if (!aShader->LoadAndCompile (theGlContext, "", theSource.Source())) |
e276548b |
1192 | { |
74413ca7 |
1193 | aShader->Release (theGlContext.get()); |
fc73a202 |
1194 | return Handle(OpenGl_ShaderObject)(); |
1195 | } |
fc73a202 |
1196 | return aShader; |
e276548b |
1197 | } |
1198 | |
1199 | // ======================================================================= |
189f85a3 |
1200 | // function : initProgram |
1201 | // purpose : Creates GLSL program from the given shader objects |
1202 | // ======================================================================= |
1203 | Handle(OpenGl_ShaderProgram) OpenGl_View::initProgram (const Handle(OpenGl_Context)& theGlContext, |
1204 | const Handle(OpenGl_ShaderObject)& theVertShader, |
d95f5ce1 |
1205 | const Handle(OpenGl_ShaderObject)& theFragShader, |
1206 | const TCollection_AsciiString& theName) |
189f85a3 |
1207 | { |
d95f5ce1 |
1208 | const TCollection_AsciiString anId = TCollection_AsciiString("occt_rt_") + theName; |
1209 | Handle(OpenGl_ShaderProgram) aProgram = new OpenGl_ShaderProgram(Handle(Graphic3d_ShaderProgram)(), anId); |
189f85a3 |
1210 | |
1211 | if (!aProgram->Create (theGlContext)) |
1212 | { |
1213 | theVertShader->Release (theGlContext.operator->()); |
1214 | |
3b523c4c |
1215 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION, |
1216 | GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, "Failed to create shader program"); |
189f85a3 |
1217 | |
1218 | return Handle(OpenGl_ShaderProgram)(); |
1219 | } |
1220 | |
1221 | if (!aProgram->AttachShader (theGlContext, theVertShader) |
1222 | || !aProgram->AttachShader (theGlContext, theFragShader)) |
1223 | { |
1224 | theVertShader->Release (theGlContext.operator->()); |
1225 | |
3b523c4c |
1226 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION, |
1227 | GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, "Failed to attach shader objects"); |
189f85a3 |
1228 | |
1229 | return Handle(OpenGl_ShaderProgram)(); |
1230 | } |
1231 | |
1232 | aProgram->SetAttributeName (theGlContext, Graphic3d_TOA_POS, "occVertex"); |
1233 | |
1234 | TCollection_AsciiString aLinkLog; |
1235 | |
1236 | if (!aProgram->Link (theGlContext)) |
1237 | { |
1238 | aProgram->FetchInfoLog (theGlContext, aLinkLog); |
1239 | |
1240 | const TCollection_ExtendedString aMessage = TCollection_ExtendedString ( |
1241 | "Failed to link shader program:\n") + aLinkLog; |
1242 | |
3b523c4c |
1243 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION, |
1244 | GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, aMessage); |
189f85a3 |
1245 | |
1246 | return Handle(OpenGl_ShaderProgram)(); |
1247 | } |
1248 | else if (theGlContext->caps->glslWarnings) |
1249 | { |
47e9c178 |
1250 | aProgram->FetchInfoLog (theGlContext, aLinkLog); |
189f85a3 |
1251 | if (!aLinkLog.IsEmpty() && !aLinkLog.IsEqual ("No errors.\n")) |
1252 | { |
1253 | const TCollection_ExtendedString aMessage = TCollection_ExtendedString ( |
1254 | "Shader program was linked with following warnings:\n") + aLinkLog; |
1255 | |
3b523c4c |
1256 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION, |
1257 | GL_DEBUG_TYPE_PORTABILITY, 0, GL_DEBUG_SEVERITY_LOW, aMessage); |
189f85a3 |
1258 | } |
1259 | } |
1260 | |
1261 | return aProgram; |
1262 | } |
1263 | |
1264 | // ======================================================================= |
1265 | // function : initRaytraceResources |
91c60b57 |
1266 | // purpose : Initializes OpenGL/GLSL shader programs |
e276548b |
1267 | // ======================================================================= |
66d1cdc6 |
1268 | Standard_Boolean OpenGl_View::initRaytraceResources (const Standard_Integer theSizeX, |
1269 | const Standard_Integer theSizeY, |
1270 | const Handle(OpenGl_Context)& theGlContext) |
e276548b |
1271 | { |
91c60b57 |
1272 | if (myRaytraceInitStatus == OpenGl_RT_FAIL) |
1273 | { |
1274 | return Standard_False; |
1275 | } |
265d4508 |
1276 | |
91c60b57 |
1277 | Standard_Boolean aToRebuildShaders = Standard_False; |
265d4508 |
1278 | |
d877e610 |
1279 | if (myRenderParams.RebuildRayTracingShaders) // requires complete re-initialization |
1280 | { |
1281 | myRaytraceInitStatus = OpenGl_RT_NONE; |
1282 | releaseRaytraceResources (theGlContext, Standard_True); |
1283 | myRenderParams.RebuildRayTracingShaders = Standard_False; // clear rebuilding flag |
1284 | } |
1285 | |
91c60b57 |
1286 | if (myRaytraceInitStatus == OpenGl_RT_INIT) |
1287 | { |
1288 | if (!myIsRaytraceDataValid) |
d877e610 |
1289 | { |
91c60b57 |
1290 | return Standard_True; |
d877e610 |
1291 | } |
07039714 |
1292 | |
91c60b57 |
1293 | const Standard_Integer aRequiredStackSize = |
f2474958 |
1294 | myRaytraceGeometry.TopLevelTreeDepth() + myRaytraceGeometry.BotLevelTreeDepth(); |
e276548b |
1295 | |
91c60b57 |
1296 | if (myRaytraceParameters.StackSize < aRequiredStackSize) |
1297 | { |
1298 | myRaytraceParameters.StackSize = Max (aRequiredStackSize, THE_DEFAULT_STACK_SIZE); |
e276548b |
1299 | |
fc73a202 |
1300 | aToRebuildShaders = Standard_True; |
1301 | } |
1302 | else |
1303 | { |
bc8c79bb |
1304 | if (aRequiredStackSize < myRaytraceParameters.StackSize) |
fc73a202 |
1305 | { |
bc8c79bb |
1306 | if (myRaytraceParameters.StackSize > THE_DEFAULT_STACK_SIZE) |
fc73a202 |
1307 | { |
bc8c79bb |
1308 | myRaytraceParameters.StackSize = Max (aRequiredStackSize, THE_DEFAULT_STACK_SIZE); |
fc73a202 |
1309 | aToRebuildShaders = Standard_True; |
1310 | } |
1311 | } |
1312 | } |
e276548b |
1313 | |
b4327ba8 |
1314 | if (myRenderParams.RaytracingDepth != myRaytraceParameters.NbBounces |
1315 | || myRenderParams.IsTransparentShadowEnabled != myRaytraceParameters.TransparentShadows |
1316 | || myRenderParams.IsGlobalIlluminationEnabled != myRaytraceParameters.GlobalIllumination |
1317 | || myRenderParams.TwoSidedBsdfModels != myRaytraceParameters.TwoSidedBsdfModels |
66d1cdc6 |
1318 | || myRaytraceGeometry.HasTextures() != myRaytraceParameters.UseBindlessTextures) |
f483f2ed |
1319 | { |
b4327ba8 |
1320 | myRaytraceParameters.NbBounces = myRenderParams.RaytracingDepth; |
1321 | myRaytraceParameters.TransparentShadows = myRenderParams.IsTransparentShadowEnabled; |
1322 | myRaytraceParameters.GlobalIllumination = myRenderParams.IsGlobalIlluminationEnabled; |
1323 | myRaytraceParameters.TwoSidedBsdfModels = myRenderParams.TwoSidedBsdfModels; |
f483f2ed |
1324 | myRaytraceParameters.UseBindlessTextures = myRaytraceGeometry.HasTextures(); |
189f85a3 |
1325 | aToRebuildShaders = Standard_True; |
1326 | } |
1327 | |
e084dbbc |
1328 | if (myRenderParams.AdaptiveScreenSampling != myRaytraceParameters.AdaptiveScreenSampling |
1329 | || myRenderParams.AdaptiveScreenSamplingAtomic != myRaytraceParameters.AdaptiveScreenSamplingAtomic) |
3a9b5dc8 |
1330 | { |
e084dbbc |
1331 | myRaytraceParameters.AdaptiveScreenSampling = myRenderParams.AdaptiveScreenSampling; |
1332 | myRaytraceParameters.AdaptiveScreenSamplingAtomic = myRenderParams.AdaptiveScreenSamplingAtomic; |
3a9b5dc8 |
1333 | if (myRenderParams.AdaptiveScreenSampling) // adaptive sampling was requested |
1334 | { |
1335 | if (!theGlContext->HasRayTracingAdaptiveSampling()) |
1336 | { |
1337 | // disable the feature if it is not supported |
1338 | myRaytraceParameters.AdaptiveScreenSampling = myRenderParams.AdaptiveScreenSampling = Standard_False; |
1339 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_PORTABILITY, 0, GL_DEBUG_SEVERITY_LOW, |
e084dbbc |
1340 | "Adaptive sampling is not supported (OpenGL 4.4 is missing)"); |
1341 | } |
1342 | else if (myRaytraceParameters.AdaptiveScreenSamplingAtomic |
1343 | && !theGlContext->HasRayTracingAdaptiveSamplingAtomic()) |
1344 | { |
1345 | // disable the feature if it is not supported |
1346 | myRaytraceParameters.AdaptiveScreenSamplingAtomic = myRenderParams.AdaptiveScreenSamplingAtomic = Standard_False; |
1347 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_PORTABILITY, 0, GL_DEBUG_SEVERITY_LOW, |
1348 | "Atomic adaptive sampling is not supported (GL_NV_shader_atomic_float is missing)"); |
3a9b5dc8 |
1349 | } |
1350 | } |
1351 | |
1352 | aToRebuildShaders = Standard_True; |
1353 | } |
66d1cdc6 |
1354 | myTileSampler.SetSize (myRenderParams, myRaytraceParameters.AdaptiveScreenSampling ? Graphic3d_Vec2i (theSizeX, theSizeY) : Graphic3d_Vec2i (0, 0)); |
3a9b5dc8 |
1355 | |
b27ab03d |
1356 | const bool toEnableDof = !myCamera->IsOrthographic() && myRaytraceParameters.GlobalIllumination; |
1357 | if (myRaytraceParameters.DepthOfField != toEnableDof) |
1358 | { |
1359 | myRaytraceParameters.DepthOfField = toEnableDof; |
1360 | aToRebuildShaders = Standard_True; |
1361 | } |
1362 | |
eb85ed36 |
1363 | if (myRenderParams.ToneMappingMethod != myRaytraceParameters.ToneMappingMethod) |
1364 | { |
1365 | myRaytraceParameters.ToneMappingMethod = myRenderParams.ToneMappingMethod; |
1366 | aToRebuildShaders = true; |
1367 | } |
1368 | |
fc73a202 |
1369 | if (aToRebuildShaders) |
1370 | { |
189f85a3 |
1371 | // Reject accumulated frames |
1372 | myAccumFrames = 0; |
e276548b |
1373 | |
3a9b5dc8 |
1374 | // Environment map should be updated |
91c60b57 |
1375 | myToUpdateEnvironmentMap = Standard_True; |
84c71f29 |
1376 | |
3a9b5dc8 |
1377 | const TCollection_AsciiString aPrefixString = generateShaderPrefix (theGlContext); |
bc8c79bb |
1378 | |
1379 | #ifdef RAY_TRACE_PRINT_INFO |
1380 | std::cout << "GLSL prefix string:" << std::endl << aPrefixString << std::endl; |
1381 | #endif |
265d4508 |
1382 | |
bc8c79bb |
1383 | myRaytraceShaderSource.SetPrefix (aPrefixString); |
1384 | myPostFSAAShaderSource.SetPrefix (aPrefixString); |
3a9b5dc8 |
1385 | myOutImageShaderSource.SetPrefix (aPrefixString); |
265d4508 |
1386 | |
737e9a8d |
1387 | if (!myRaytraceShader->LoadAndCompile (theGlContext, myRaytraceProgram->ResourceId(), myRaytraceShaderSource.Source()) |
1388 | || !myPostFSAAShader->LoadAndCompile (theGlContext, myPostFSAAProgram->ResourceId(), myPostFSAAShaderSource.Source()) |
1389 | || !myOutImageShader->LoadAndCompile (theGlContext, myOutImageProgram->ResourceId(), myOutImageShaderSource.Source())) |
fc73a202 |
1390 | { |
91c60b57 |
1391 | return safeFailBack ("Failed to compile ray-tracing fragment shaders", theGlContext); |
fc73a202 |
1392 | } |
1393 | |
91c60b57 |
1394 | myRaytraceProgram->SetAttributeName (theGlContext, Graphic3d_TOA_POS, "occVertex"); |
1395 | myPostFSAAProgram->SetAttributeName (theGlContext, Graphic3d_TOA_POS, "occVertex"); |
3a9b5dc8 |
1396 | myOutImageProgram->SetAttributeName (theGlContext, Graphic3d_TOA_POS, "occVertex"); |
1397 | |
91c60b57 |
1398 | if (!myRaytraceProgram->Link (theGlContext) |
3a9b5dc8 |
1399 | || !myPostFSAAProgram->Link (theGlContext) |
1400 | || !myOutImageProgram->Link (theGlContext)) |
fc73a202 |
1401 | { |
91c60b57 |
1402 | return safeFailBack ("Failed to initialize vertex attributes for ray-tracing program", theGlContext); |
fc73a202 |
1403 | } |
1404 | } |
e276548b |
1405 | } |
1406 | |
91c60b57 |
1407 | if (myRaytraceInitStatus == OpenGl_RT_NONE) |
fc73a202 |
1408 | { |
6e728f3b |
1409 | myAccumFrames = 0; // accumulation should be restarted |
d877e610 |
1410 | |
91c60b57 |
1411 | if (!theGlContext->IsGlGreaterEqual (3, 1)) |
fc73a202 |
1412 | { |
91c60b57 |
1413 | return safeFailBack ("Ray-tracing requires OpenGL 3.1 and higher", theGlContext); |
25ef750e |
1414 | } |
91c60b57 |
1415 | else if (!theGlContext->arbTboRGB32) |
25ef750e |
1416 | { |
91c60b57 |
1417 | return safeFailBack ("Ray-tracing requires OpenGL 4.0+ or GL_ARB_texture_buffer_object_rgb32 extension", theGlContext); |
1418 | } |
1419 | else if (!theGlContext->arbFBOBlit) |
1420 | { |
1421 | return safeFailBack ("Ray-tracing requires EXT_framebuffer_blit extension", theGlContext); |
fc73a202 |
1422 | } |
5322131b |
1423 | |
c357e426 |
1424 | myRaytraceParameters.NbBounces = myRenderParams.RaytracingDepth; |
bc8c79bb |
1425 | |
ee5befae |
1426 | const TCollection_AsciiString aShaderFolder = Graphic3d_ShaderProgram::ShadersFolder(); |
fc73a202 |
1427 | if (myIsRaytraceDataValid) |
1428 | { |
bc8c79bb |
1429 | myRaytraceParameters.StackSize = Max (THE_DEFAULT_STACK_SIZE, |
f2474958 |
1430 | myRaytraceGeometry.TopLevelTreeDepth() + myRaytraceGeometry.BotLevelTreeDepth()); |
fc73a202 |
1431 | } |
265d4508 |
1432 | |
3a9b5dc8 |
1433 | const TCollection_AsciiString aPrefixString = generateShaderPrefix (theGlContext); |
bc8c79bb |
1434 | |
1435 | #ifdef RAY_TRACE_PRINT_INFO |
1436 | std::cout << "GLSL prefix string:" << std::endl << aPrefixString << std::endl; |
1437 | #endif |
1438 | |
73722cc9 |
1439 | ShaderSource aBasicVertShaderSrc; |
fc73a202 |
1440 | { |
ee5befae |
1441 | if (!aShaderFolder.IsEmpty()) |
fc73a202 |
1442 | { |
ee5befae |
1443 | const TCollection_AsciiString aFiles[] = { aShaderFolder + "/RaytraceBase.vs", "" }; |
1444 | if (!aBasicVertShaderSrc.LoadFromFiles (aFiles)) |
1445 | { |
1446 | return safeFailBack (aBasicVertShaderSrc.ErrorDescription(), theGlContext); |
1447 | } |
1448 | } |
1449 | else |
1450 | { |
1451 | const TCollection_AsciiString aSrcShaders[] = { Shaders_RaytraceBase_vs, "" }; |
1452 | aBasicVertShaderSrc.LoadFromStrings (aSrcShaders); |
fc73a202 |
1453 | } |
73722cc9 |
1454 | } |
265d4508 |
1455 | |
73722cc9 |
1456 | { |
ee5befae |
1457 | if (!aShaderFolder.IsEmpty()) |
1458 | { |
1459 | const TCollection_AsciiString aFiles[] = { aShaderFolder + "/RaytraceBase.fs", |
1460 | aShaderFolder + "/PathtraceBase.fs", |
1461 | aShaderFolder + "/RaytraceRender.fs", |
1462 | "" }; |
1463 | if (!myRaytraceShaderSource.LoadFromFiles (aFiles, aPrefixString)) |
1464 | { |
1465 | return safeFailBack (myRaytraceShaderSource.ErrorDescription(), theGlContext); |
1466 | } |
1467 | } |
1468 | else |
73722cc9 |
1469 | { |
ee5befae |
1470 | const TCollection_AsciiString aSrcShaders[] = { Shaders_RaytraceBase_fs, |
1471 | Shaders_PathtraceBase_fs, |
1472 | Shaders_RaytraceRender_fs, |
1473 | "" }; |
1474 | myRaytraceShaderSource.LoadFromStrings (aSrcShaders, aPrefixString); |
73722cc9 |
1475 | } |
e276548b |
1476 | |
73722cc9 |
1477 | Handle(OpenGl_ShaderObject) aBasicVertShader = initShader (GL_VERTEX_SHADER, aBasicVertShaderSrc, theGlContext); |
1478 | if (aBasicVertShader.IsNull()) |
1479 | { |
1480 | return safeFailBack ("Failed to initialize ray-trace vertex shader", theGlContext); |
1481 | } |
265d4508 |
1482 | |
91c60b57 |
1483 | myRaytraceShader = initShader (GL_FRAGMENT_SHADER, myRaytraceShaderSource, theGlContext); |
fc73a202 |
1484 | if (myRaytraceShader.IsNull()) |
1485 | { |
91c60b57 |
1486 | aBasicVertShader->Release (theGlContext.operator->()); |
91c60b57 |
1487 | return safeFailBack ("Failed to initialize ray-trace fragment shader", theGlContext); |
fc73a202 |
1488 | } |
265d4508 |
1489 | |
d95f5ce1 |
1490 | myRaytraceProgram = initProgram (theGlContext, aBasicVertShader, myRaytraceShader, "main"); |
189f85a3 |
1491 | if (myRaytraceProgram.IsNull()) |
fc73a202 |
1492 | { |
189f85a3 |
1493 | return safeFailBack ("Failed to initialize ray-trace shader program", theGlContext); |
fc73a202 |
1494 | } |
1495 | } |
265d4508 |
1496 | |
fc73a202 |
1497 | { |
ee5befae |
1498 | if (!aShaderFolder.IsEmpty()) |
1499 | { |
1500 | const TCollection_AsciiString aFiles[] = { aShaderFolder + "/RaytraceBase.fs", aShaderFolder + "/RaytraceSmooth.fs", "" }; |
1501 | if (!myPostFSAAShaderSource.LoadFromFiles (aFiles, aPrefixString)) |
1502 | { |
1503 | return safeFailBack (myPostFSAAShaderSource.ErrorDescription(), theGlContext); |
1504 | } |
1505 | } |
1506 | else |
73722cc9 |
1507 | { |
ee5befae |
1508 | const TCollection_AsciiString aSrcShaders[] = { Shaders_RaytraceBase_fs, Shaders_RaytraceSmooth_fs, "" }; |
1509 | myPostFSAAShaderSource.LoadFromStrings (aSrcShaders, aPrefixString); |
73722cc9 |
1510 | } |
265d4508 |
1511 | |
73722cc9 |
1512 | Handle(OpenGl_ShaderObject) aBasicVertShader = initShader (GL_VERTEX_SHADER, aBasicVertShaderSrc, theGlContext); |
fc73a202 |
1513 | if (aBasicVertShader.IsNull()) |
1514 | { |
91c60b57 |
1515 | return safeFailBack ("Failed to initialize FSAA vertex shader", theGlContext); |
fc73a202 |
1516 | } |
265d4508 |
1517 | |
91c60b57 |
1518 | myPostFSAAShader = initShader (GL_FRAGMENT_SHADER, myPostFSAAShaderSource, theGlContext); |
fc73a202 |
1519 | if (myPostFSAAShader.IsNull()) |
1520 | { |
91c60b57 |
1521 | aBasicVertShader->Release (theGlContext.operator->()); |
91c60b57 |
1522 | return safeFailBack ("Failed to initialize FSAA fragment shader", theGlContext); |
fc73a202 |
1523 | } |
265d4508 |
1524 | |
d95f5ce1 |
1525 | myPostFSAAProgram = initProgram (theGlContext, aBasicVertShader, myPostFSAAShader, "fsaa"); |
189f85a3 |
1526 | if (myPostFSAAProgram.IsNull()) |
fc73a202 |
1527 | { |
189f85a3 |
1528 | return safeFailBack ("Failed to initialize FSAA shader program", theGlContext); |
fc73a202 |
1529 | } |
189f85a3 |
1530 | } |
fc73a202 |
1531 | |
189f85a3 |
1532 | { |
ee5befae |
1533 | if (!aShaderFolder.IsEmpty()) |
1534 | { |
1535 | const TCollection_AsciiString aFiles[] = { aShaderFolder + "/Display.fs", "" }; |
1536 | if (!myOutImageShaderSource.LoadFromFiles (aFiles, aPrefixString)) |
1537 | { |
1538 | return safeFailBack (myOutImageShaderSource.ErrorDescription(), theGlContext); |
1539 | } |
1540 | } |
1541 | else |
73722cc9 |
1542 | { |
ee5befae |
1543 | const TCollection_AsciiString aSrcShaders[] = { Shaders_Display_fs, "" }; |
1544 | myOutImageShaderSource.LoadFromStrings (aSrcShaders, aPrefixString); |
73722cc9 |
1545 | } |
fc73a202 |
1546 | |
73722cc9 |
1547 | Handle(OpenGl_ShaderObject) aBasicVertShader = initShader (GL_VERTEX_SHADER, aBasicVertShaderSrc, theGlContext); |
189f85a3 |
1548 | if (aBasicVertShader.IsNull()) |
1549 | { |
1550 | return safeFailBack ("Failed to set vertex shader source", theGlContext); |
fc73a202 |
1551 | } |
1552 | |
3a9b5dc8 |
1553 | myOutImageShader = initShader (GL_FRAGMENT_SHADER, myOutImageShaderSource, theGlContext); |
1554 | if (myOutImageShader.IsNull()) |
fc73a202 |
1555 | { |
189f85a3 |
1556 | aBasicVertShader->Release (theGlContext.operator->()); |
189f85a3 |
1557 | return safeFailBack ("Failed to set display fragment shader source", theGlContext); |
07039714 |
1558 | } |
fc73a202 |
1559 | |
d95f5ce1 |
1560 | myOutImageProgram = initProgram (theGlContext, aBasicVertShader, myOutImageShader, "out"); |
189f85a3 |
1561 | if (myOutImageProgram.IsNull()) |
1562 | { |
3a9b5dc8 |
1563 | return safeFailBack ("Failed to initialize display shader program", theGlContext); |
fc73a202 |
1564 | } |
e276548b |
1565 | } |
fc73a202 |
1566 | } |
e276548b |
1567 | |
91c60b57 |
1568 | if (myRaytraceInitStatus == OpenGl_RT_NONE || aToRebuildShaders) |
fc73a202 |
1569 | { |
1570 | for (Standard_Integer anIndex = 0; anIndex < 2; ++anIndex) |
e276548b |
1571 | { |
fc73a202 |
1572 | Handle(OpenGl_ShaderProgram)& aShaderProgram = |
1573 | (anIndex == 0) ? myRaytraceProgram : myPostFSAAProgram; |
1574 | |
91c60b57 |
1575 | theGlContext->BindProgram (aShaderProgram); |
fc73a202 |
1576 | |
91c60b57 |
1577 | aShaderProgram->SetSampler (theGlContext, |
fc73a202 |
1578 | "uSceneMinPointTexture", OpenGl_RT_SceneMinPointTexture); |
91c60b57 |
1579 | aShaderProgram->SetSampler (theGlContext, |
fc73a202 |
1580 | "uSceneMaxPointTexture", OpenGl_RT_SceneMaxPointTexture); |
91c60b57 |
1581 | aShaderProgram->SetSampler (theGlContext, |
fc73a202 |
1582 | "uSceneNodeInfoTexture", OpenGl_RT_SceneNodeInfoTexture); |
91c60b57 |
1583 | aShaderProgram->SetSampler (theGlContext, |
fc73a202 |
1584 | "uGeometryVertexTexture", OpenGl_RT_GeometryVertexTexture); |
91c60b57 |
1585 | aShaderProgram->SetSampler (theGlContext, |
fc73a202 |
1586 | "uGeometryNormalTexture", OpenGl_RT_GeometryNormalTexture); |
91c60b57 |
1587 | aShaderProgram->SetSampler (theGlContext, |
25ef750e |
1588 | "uGeometryTexCrdTexture", OpenGl_RT_GeometryTexCrdTexture); |
91c60b57 |
1589 | aShaderProgram->SetSampler (theGlContext, |
25ef750e |
1590 | "uGeometryTriangTexture", OpenGl_RT_GeometryTriangTexture); |
91c60b57 |
1591 | aShaderProgram->SetSampler (theGlContext, |
84c71f29 |
1592 | "uSceneTransformTexture", OpenGl_RT_SceneTransformTexture); |
91c60b57 |
1593 | aShaderProgram->SetSampler (theGlContext, |
84c71f29 |
1594 | "uEnvironmentMapTexture", OpenGl_RT_EnvironmentMapTexture); |
91c60b57 |
1595 | aShaderProgram->SetSampler (theGlContext, |
25ef750e |
1596 | "uRaytraceMaterialTexture", OpenGl_RT_RaytraceMaterialTexture); |
91c60b57 |
1597 | aShaderProgram->SetSampler (theGlContext, |
25ef750e |
1598 | "uRaytraceLightSrcTexture", OpenGl_RT_RaytraceLightSrcTexture); |
fc73a202 |
1599 | |
1600 | if (anIndex == 1) |
1601 | { |
91c60b57 |
1602 | aShaderProgram->SetSampler (theGlContext, |
189f85a3 |
1603 | "uFSAAInputTexture", OpenGl_RT_FsaaInputTexture); |
1604 | } |
1605 | else |
1606 | { |
1607 | aShaderProgram->SetSampler (theGlContext, |
1608 | "uAccumTexture", OpenGl_RT_PrevAccumTexture); |
fc73a202 |
1609 | } |
265d4508 |
1610 | |
fc73a202 |
1611 | myUniformLocations[anIndex][OpenGl_RT_aPosition] = |
91c60b57 |
1612 | aShaderProgram->GetAttributeLocation (theGlContext, "occVertex"); |
fc73a202 |
1613 | |
1614 | myUniformLocations[anIndex][OpenGl_RT_uOriginLB] = |
91c60b57 |
1615 | aShaderProgram->GetUniformLocation (theGlContext, "uOriginLB"); |
fc73a202 |
1616 | myUniformLocations[anIndex][OpenGl_RT_uOriginRB] = |
91c60b57 |
1617 | aShaderProgram->GetUniformLocation (theGlContext, "uOriginRB"); |
fc73a202 |
1618 | myUniformLocations[anIndex][OpenGl_RT_uOriginLT] = |
91c60b57 |
1619 | aShaderProgram->GetUniformLocation (theGlContext, "uOriginLT"); |
fc73a202 |
1620 | myUniformLocations[anIndex][OpenGl_RT_uOriginRT] = |
91c60b57 |
1621 | aShaderProgram->GetUniformLocation (theGlContext, "uOriginRT"); |
fc73a202 |
1622 | myUniformLocations[anIndex][OpenGl_RT_uDirectLB] = |
91c60b57 |
1623 | aShaderProgram->GetUniformLocation (theGlContext, "uDirectLB"); |
fc73a202 |
1624 | myUniformLocations[anIndex][OpenGl_RT_uDirectRB] = |
91c60b57 |
1625 | aShaderProgram->GetUniformLocation (theGlContext, "uDirectRB"); |
fc73a202 |
1626 | myUniformLocations[anIndex][OpenGl_RT_uDirectLT] = |
91c60b57 |
1627 | aShaderProgram->GetUniformLocation (theGlContext, "uDirectLT"); |
fc73a202 |
1628 | myUniformLocations[anIndex][OpenGl_RT_uDirectRT] = |
91c60b57 |
1629 | aShaderProgram->GetUniformLocation (theGlContext, "uDirectRT"); |
3a9b5dc8 |
1630 | myUniformLocations[anIndex][OpenGl_RT_uViewPrMat] = |
1d865689 |
1631 | aShaderProgram->GetUniformLocation (theGlContext, "uViewMat"); |
25ef750e |
1632 | myUniformLocations[anIndex][OpenGl_RT_uUnviewMat] = |
91c60b57 |
1633 | aShaderProgram->GetUniformLocation (theGlContext, "uUnviewMat"); |
fc73a202 |
1634 | |
1635 | myUniformLocations[anIndex][OpenGl_RT_uSceneRad] = |
91c60b57 |
1636 | aShaderProgram->GetUniformLocation (theGlContext, "uSceneRadius"); |
fc73a202 |
1637 | myUniformLocations[anIndex][OpenGl_RT_uSceneEps] = |
91c60b57 |
1638 | aShaderProgram->GetUniformLocation (theGlContext, "uSceneEpsilon"); |
25ef750e |
1639 | myUniformLocations[anIndex][OpenGl_RT_uLightCount] = |
91c60b57 |
1640 | aShaderProgram->GetUniformLocation (theGlContext, "uLightCount"); |
25ef750e |
1641 | myUniformLocations[anIndex][OpenGl_RT_uLightAmbnt] = |
91c60b57 |
1642 | aShaderProgram->GetUniformLocation (theGlContext, "uGlobalAmbient"); |
fc73a202 |
1643 | |
1644 | myUniformLocations[anIndex][OpenGl_RT_uOffsetX] = |
91c60b57 |
1645 | aShaderProgram->GetUniformLocation (theGlContext, "uOffsetX"); |
fc73a202 |
1646 | myUniformLocations[anIndex][OpenGl_RT_uOffsetY] = |
91c60b57 |
1647 | aShaderProgram->GetUniformLocation (theGlContext, "uOffsetY"); |
fc73a202 |
1648 | myUniformLocations[anIndex][OpenGl_RT_uSamples] = |
91c60b57 |
1649 | aShaderProgram->GetUniformLocation (theGlContext, "uSamples"); |
84c71f29 |
1650 | |
189f85a3 |
1651 | myUniformLocations[anIndex][OpenGl_RT_uTexSamplersArray] = |
91c60b57 |
1652 | aShaderProgram->GetUniformLocation (theGlContext, "uTextureSamplers"); |
25ef750e |
1653 | |
189f85a3 |
1654 | myUniformLocations[anIndex][OpenGl_RT_uShadowsEnabled] = |
1655 | aShaderProgram->GetUniformLocation (theGlContext, "uShadowsEnabled"); |
1656 | myUniformLocations[anIndex][OpenGl_RT_uReflectEnabled] = |
1657 | aShaderProgram->GetUniformLocation (theGlContext, "uReflectEnabled"); |
1658 | myUniformLocations[anIndex][OpenGl_RT_uSphereMapEnabled] = |
1659 | aShaderProgram->GetUniformLocation (theGlContext, "uSphereMapEnabled"); |
1660 | myUniformLocations[anIndex][OpenGl_RT_uSphereMapForBack] = |
1661 | aShaderProgram->GetUniformLocation (theGlContext, "uSphereMapForBack"); |
8c820969 |
1662 | myUniformLocations[anIndex][OpenGl_RT_uBlockedRngEnabled] = |
1663 | aShaderProgram->GetUniformLocation (theGlContext, "uBlockedRngEnabled"); |
189f85a3 |
1664 | |
3a9b5dc8 |
1665 | myUniformLocations[anIndex][OpenGl_RT_uWinSizeX] = |
1666 | aShaderProgram->GetUniformLocation (theGlContext, "uWinSizeX"); |
1667 | myUniformLocations[anIndex][OpenGl_RT_uWinSizeY] = |
1668 | aShaderProgram->GetUniformLocation (theGlContext, "uWinSizeY"); |
1669 | |
383c6c9f |
1670 | myUniformLocations[anIndex][OpenGl_RT_uAccumSamples] = |
1671 | aShaderProgram->GetUniformLocation (theGlContext, "uAccumSamples"); |
189f85a3 |
1672 | myUniformLocations[anIndex][OpenGl_RT_uFrameRndSeed] = |
1673 | aShaderProgram->GetUniformLocation (theGlContext, "uFrameRndSeed"); |
1674 | |
3a9b5dc8 |
1675 | myUniformLocations[anIndex][OpenGl_RT_uRenderImage] = |
1676 | aShaderProgram->GetUniformLocation (theGlContext, "uRenderImage"); |
e084dbbc |
1677 | myUniformLocations[anIndex][OpenGl_RT_uTilesImage] = |
1678 | aShaderProgram->GetUniformLocation (theGlContext, "uTilesImage"); |
3a9b5dc8 |
1679 | myUniformLocations[anIndex][OpenGl_RT_uOffsetImage] = |
1680 | aShaderProgram->GetUniformLocation (theGlContext, "uOffsetImage"); |
66d1cdc6 |
1681 | myUniformLocations[anIndex][OpenGl_RT_uTileSize] = |
1682 | aShaderProgram->GetUniformLocation (theGlContext, "uTileSize"); |
1683 | myUniformLocations[anIndex][OpenGl_RT_uVarianceScaleFactor] = |
1684 | aShaderProgram->GetUniformLocation (theGlContext, "uVarianceScaleFactor"); |
3a9b5dc8 |
1685 | |
189f85a3 |
1686 | myUniformLocations[anIndex][OpenGl_RT_uBackColorTop] = |
1687 | aShaderProgram->GetUniformLocation (theGlContext, "uBackColorTop"); |
1688 | myUniformLocations[anIndex][OpenGl_RT_uBackColorBot] = |
1689 | aShaderProgram->GetUniformLocation (theGlContext, "uBackColorBot"); |
b09447ed |
1690 | |
1691 | myUniformLocations[anIndex][OpenGl_RT_uMaxRadiance] = |
1692 | aShaderProgram->GetUniformLocation (theGlContext, "uMaxRadiance"); |
fc73a202 |
1693 | } |
265d4508 |
1694 | |
189f85a3 |
1695 | theGlContext->BindProgram (myOutImageProgram); |
1696 | |
1697 | myOutImageProgram->SetSampler (theGlContext, |
1698 | "uInputTexture", OpenGl_RT_PrevAccumTexture); |
1699 | |
1d865689 |
1700 | myOutImageProgram->SetSampler (theGlContext, |
3a9b5dc8 |
1701 | "uDepthTexture", OpenGl_RT_RaytraceDepthTexture); |
1d865689 |
1702 | |
91c60b57 |
1703 | theGlContext->BindProgram (NULL); |
fc73a202 |
1704 | } |
265d4508 |
1705 | |
91c60b57 |
1706 | if (myRaytraceInitStatus != OpenGl_RT_NONE) |
fc73a202 |
1707 | { |
91c60b57 |
1708 | return myRaytraceInitStatus == OpenGl_RT_INIT; |
fc73a202 |
1709 | } |
265d4508 |
1710 | |
fc73a202 |
1711 | const GLfloat aVertices[] = { -1.f, -1.f, 0.f, |
1712 | -1.f, 1.f, 0.f, |
1713 | 1.f, 1.f, 0.f, |
1714 | 1.f, 1.f, 0.f, |
1715 | 1.f, -1.f, 0.f, |
1716 | -1.f, -1.f, 0.f }; |
265d4508 |
1717 | |
91c60b57 |
1718 | myRaytraceScreenQuad.Init (theGlContext, 3, 6, aVertices); |
265d4508 |
1719 | |
91c60b57 |
1720 | myRaytraceInitStatus = OpenGl_RT_INIT; // initialized in normal way |
ca3c13d1 |
1721 | |
fc73a202 |
1722 | return Standard_True; |
1723 | } |
265d4508 |
1724 | |
fc73a202 |
1725 | // ======================================================================= |
189f85a3 |
1726 | // function : nullifyResource |
3a9b5dc8 |
1727 | // purpose : Releases OpenGL resource |
fc73a202 |
1728 | // ======================================================================= |
aa00364d |
1729 | template <class T> |
3a9b5dc8 |
1730 | inline void nullifyResource (const Handle(OpenGl_Context)& theGlContext, Handle(T)& theResource) |
fc73a202 |
1731 | { |
1732 | if (!theResource.IsNull()) |
1733 | { |
ad67e367 |
1734 | theResource->Release (theGlContext.get()); |
fc73a202 |
1735 | theResource.Nullify(); |
1736 | } |
1737 | } |
265d4508 |
1738 | |
fc73a202 |
1739 | // ======================================================================= |
189f85a3 |
1740 | // function : releaseRaytraceResources |
fc73a202 |
1741 | // purpose : Releases OpenGL/GLSL shader programs |
1742 | // ======================================================================= |
d877e610 |
1743 | void OpenGl_View::releaseRaytraceResources (const Handle(OpenGl_Context)& theGlContext, const Standard_Boolean theToRebuild) |
fc73a202 |
1744 | { |
d877e610 |
1745 | // release shader resources |
189f85a3 |
1746 | nullifyResource (theGlContext, myRaytraceShader); |
1747 | nullifyResource (theGlContext, myPostFSAAShader); |
265d4508 |
1748 | |
189f85a3 |
1749 | nullifyResource (theGlContext, myRaytraceProgram); |
1750 | nullifyResource (theGlContext, myPostFSAAProgram); |
1751 | nullifyResource (theGlContext, myOutImageProgram); |
265d4508 |
1752 | |
d877e610 |
1753 | if (!theToRebuild) // complete release |
1754 | { |
ad67e367 |
1755 | myRaytraceFBO1[0]->Release (theGlContext.get()); |
1756 | myRaytraceFBO1[1]->Release (theGlContext.get()); |
1757 | myRaytraceFBO2[0]->Release (theGlContext.get()); |
1758 | myRaytraceFBO2[1]->Release (theGlContext.get()); |
d877e610 |
1759 | |
1760 | nullifyResource (theGlContext, myRaytraceOutputTexture[0]); |
1761 | nullifyResource (theGlContext, myRaytraceOutputTexture[1]); |
265d4508 |
1762 | |
b27ab03d |
1763 | nullifyResource (theGlContext, myRaytraceTileOffsetsTexture[0]); |
1764 | nullifyResource (theGlContext, myRaytraceTileOffsetsTexture[1]); |
1765 | nullifyResource (theGlContext, myRaytraceVisualErrorTexture[0]); |
1766 | nullifyResource (theGlContext, myRaytraceVisualErrorTexture[1]); |
e084dbbc |
1767 | nullifyResource (theGlContext, myRaytraceTileSamplesTexture[0]); |
1768 | nullifyResource (theGlContext, myRaytraceTileSamplesTexture[1]); |
265d4508 |
1769 | |
d877e610 |
1770 | nullifyResource (theGlContext, mySceneNodeInfoTexture); |
1771 | nullifyResource (theGlContext, mySceneMinPointTexture); |
1772 | nullifyResource (theGlContext, mySceneMaxPointTexture); |
265d4508 |
1773 | |
d877e610 |
1774 | nullifyResource (theGlContext, myGeometryVertexTexture); |
1775 | nullifyResource (theGlContext, myGeometryNormalTexture); |
1776 | nullifyResource (theGlContext, myGeometryTexCrdTexture); |
1777 | nullifyResource (theGlContext, myGeometryTriangTexture); |
1778 | nullifyResource (theGlContext, mySceneTransformTexture); |
47e9c178 |
1779 | |
d877e610 |
1780 | nullifyResource (theGlContext, myRaytraceLightSrcTexture); |
1781 | nullifyResource (theGlContext, myRaytraceMaterialTexture); |
1782 | |
1783 | myRaytraceGeometry.ReleaseResources (theGlContext); |
1784 | |
1785 | if (myRaytraceScreenQuad.IsValid ()) |
1786 | { |
ad67e367 |
1787 | myRaytraceScreenQuad.Release (theGlContext.get()); |
d877e610 |
1788 | } |
3a9b5dc8 |
1789 | } |
91c60b57 |
1790 | } |
1791 | |
1792 | // ======================================================================= |
bf02aa7d |
1793 | // function : updateRaytraceBuffers |
1794 | // purpose : Updates auxiliary OpenGL frame buffers. |
91c60b57 |
1795 | // ======================================================================= |
bf02aa7d |
1796 | Standard_Boolean OpenGl_View::updateRaytraceBuffers (const Standard_Integer theSizeX, |
91c60b57 |
1797 | const Standard_Integer theSizeY, |
1798 | const Handle(OpenGl_Context)& theGlContext) |
1799 | { |
6dd6e5c7 |
1800 | // Auxiliary buffers are not used |
bf02aa7d |
1801 | if (!myRaytraceParameters.GlobalIllumination && !myRenderParams.IsAntialiasingEnabled) |
91c60b57 |
1802 | { |
bf02aa7d |
1803 | myRaytraceFBO1[0]->Release (theGlContext.operator->()); |
1804 | myRaytraceFBO2[0]->Release (theGlContext.operator->()); |
1805 | myRaytraceFBO1[1]->Release (theGlContext.operator->()); |
1806 | myRaytraceFBO2[1]->Release (theGlContext.operator->()); |
3a9b5dc8 |
1807 | |
bf02aa7d |
1808 | return Standard_True; |
1809 | } |
1810 | |
4eaaf9d8 |
1811 | if (myRaytraceParameters.AdaptiveScreenSampling) |
6dd6e5c7 |
1812 | { |
66d1cdc6 |
1813 | Graphic3d_Vec2i aMaxViewport = myTileSampler.OffsetTilesViewportMax().cwiseMax (Graphic3d_Vec2i (theSizeX, theSizeY)); |
1814 | myRaytraceFBO1[0]->InitLazy (theGlContext, aMaxViewport.x(), aMaxViewport.y(), GL_RGBA32F, myFboDepthFormat); |
1815 | myRaytraceFBO2[0]->InitLazy (theGlContext, aMaxViewport.x(), aMaxViewport.y(), GL_RGBA32F, myFboDepthFormat); |
4eaaf9d8 |
1816 | if (myRaytraceFBO1[1]->IsValid()) // second FBO not needed |
1817 | { |
1818 | myRaytraceFBO1[1]->Release (theGlContext.operator->()); |
1819 | myRaytraceFBO2[1]->Release (theGlContext.operator->()); |
1820 | } |
bf02aa7d |
1821 | } |
66d1cdc6 |
1822 | |
1823 | for (int aViewIter = 0; aViewIter < 2; ++aViewIter) |
bf02aa7d |
1824 | { |
66d1cdc6 |
1825 | if (myRaytraceTileOffsetsTexture[aViewIter].IsNull()) |
4eaaf9d8 |
1826 | { |
66d1cdc6 |
1827 | myRaytraceOutputTexture[aViewIter] = new OpenGl_Texture(); |
1828 | myRaytraceVisualErrorTexture[aViewIter] = new OpenGl_Texture(); |
e084dbbc |
1829 | myRaytraceTileSamplesTexture[aViewIter] = new OpenGl_Texture(); |
66d1cdc6 |
1830 | myRaytraceTileOffsetsTexture[aViewIter] = new OpenGl_Texture(); |
4eaaf9d8 |
1831 | } |
1832 | |
66d1cdc6 |
1833 | if (aViewIter == 1 |
1834 | && myCamera->ProjectionType() != Graphic3d_Camera::Projection_Stereo) |
4eaaf9d8 |
1835 | { |
1836 | myRaytraceFBO1[1]->Release (theGlContext.operator->()); |
1837 | myRaytraceFBO2[1]->Release (theGlContext.operator->()); |
66d1cdc6 |
1838 | myRaytraceOutputTexture[1]->Release (theGlContext.operator->()); |
1839 | myRaytraceVisualErrorTexture[1]->Release (theGlContext.operator->()); |
1840 | myRaytraceTileOffsetsTexture[1]->Release (theGlContext.operator->()); |
1841 | continue; |
4eaaf9d8 |
1842 | } |
3a9b5dc8 |
1843 | |
66d1cdc6 |
1844 | if (myRaytraceParameters.AdaptiveScreenSampling) |
3a9b5dc8 |
1845 | { |
66d1cdc6 |
1846 | if (myRaytraceOutputTexture[aViewIter]->SizeX() / 3 == theSizeX |
1847 | && myRaytraceOutputTexture[aViewIter]->SizeY() / 2 == theSizeY |
1848 | && myRaytraceVisualErrorTexture[aViewIter]->SizeX() == myTileSampler.NbTilesX() |
1849 | && myRaytraceVisualErrorTexture[aViewIter]->SizeY() == myTileSampler.NbTilesY()) |
1850 | { |
e084dbbc |
1851 | if (myRaytraceParameters.AdaptiveScreenSamplingAtomic) |
1852 | { |
1853 | continue; // offsets texture is dynamically resized |
1854 | } |
1855 | else if (myRaytraceTileSamplesTexture[aViewIter]->SizeX() == myTileSampler.NbTilesX() |
1856 | && myRaytraceTileSamplesTexture[aViewIter]->SizeY() == myTileSampler.NbTilesY()) |
1857 | { |
1858 | continue; |
1859 | } |
66d1cdc6 |
1860 | } |
b27ab03d |
1861 | |
66d1cdc6 |
1862 | myAccumFrames = 0; |
b27ab03d |
1863 | |
66d1cdc6 |
1864 | // Due to limitations of OpenGL image load-store extension |
1865 | // atomic operations are supported only for single-channel |
1866 | // images, so we define GL_R32F image. It is used as array |
1867 | // of 6D floating point vectors: |
1868 | // 0 - R color channel |
1869 | // 1 - G color channel |
1870 | // 2 - B color channel |
1871 | // 3 - hit time transformed into OpenGL NDC space |
1872 | // 4 - luminance accumulated for odd samples only |
1873 | myRaytraceOutputTexture[aViewIter]->InitRectangle (theGlContext, theSizeX * 3, theSizeY * 2, OpenGl_TextureFormat::Create<GLfloat, 1>()); |
1874 | |
1875 | // workaround for some NVIDIA drivers |
1876 | myRaytraceVisualErrorTexture[aViewIter]->Release (theGlContext.operator->()); |
e084dbbc |
1877 | myRaytraceTileSamplesTexture[aViewIter]->Release (theGlContext.operator->()); |
ba00aab7 |
1878 | myRaytraceVisualErrorTexture[aViewIter]->Init (theGlContext, |
1879 | OpenGl_TextureFormat::FindSizedFormat (theGlContext, GL_R32I), |
1880 | Graphic3d_Vec2i (myTileSampler.NbTilesX(), myTileSampler.NbTilesY()), |
1881 | Graphic3d_TOT_2D); |
e084dbbc |
1882 | if (!myRaytraceParameters.AdaptiveScreenSamplingAtomic) |
1883 | { |
ba00aab7 |
1884 | myRaytraceTileSamplesTexture[aViewIter]->Init (theGlContext, |
1885 | OpenGl_TextureFormat::FindSizedFormat (theGlContext, GL_R32I), |
1886 | Graphic3d_Vec2i (myTileSampler.NbTilesX(), myTileSampler.NbTilesY()), |
1887 | Graphic3d_TOT_2D); |
e084dbbc |
1888 | } |
66d1cdc6 |
1889 | } |
1890 | else // non-adaptive mode |
1891 | { |
1892 | if (myRaytraceFBO1[aViewIter]->GetSizeX() != theSizeX |
1893 | || myRaytraceFBO1[aViewIter]->GetSizeY() != theSizeY) |
1894 | { |
1895 | myAccumFrames = 0; // accumulation should be restarted |
1896 | } |
b27ab03d |
1897 | |
66d1cdc6 |
1898 | myRaytraceFBO1[aViewIter]->InitLazy (theGlContext, theSizeX, theSizeY, GL_RGBA32F, myFboDepthFormat); |
1899 | myRaytraceFBO2[aViewIter]->InitLazy (theGlContext, theSizeX, theSizeY, GL_RGBA32F, myFboDepthFormat); |
3a9b5dc8 |
1900 | } |
1901 | } |
91c60b57 |
1902 | return Standard_True; |
1903 | } |
1904 | |
1905 | // ======================================================================= |
189f85a3 |
1906 | // function : updateCamera |
91c60b57 |
1907 | // purpose : Generates viewing rays for corners of screen quad |
1908 | // ======================================================================= |
1909 | void OpenGl_View::updateCamera (const OpenGl_Mat4& theOrientation, |
1910 | const OpenGl_Mat4& theViewMapping, |
1911 | OpenGl_Vec3* theOrigins, |
1912 | OpenGl_Vec3* theDirects, |
3a9b5dc8 |
1913 | OpenGl_Mat4& theViewPr, |
91c60b57 |
1914 | OpenGl_Mat4& theUnview) |
1915 | { |
1d865689 |
1916 | // compute view-projection matrix |
3a9b5dc8 |
1917 | theViewPr = theViewMapping * theOrientation; |
1d865689 |
1918 | |
1919 | // compute inverse view-projection matrix |
3a9b5dc8 |
1920 | theViewPr.Inverted (theUnview); |
91c60b57 |
1921 | |
1922 | Standard_Integer aOriginIndex = 0; |
1923 | Standard_Integer aDirectIndex = 0; |
1924 | |
1925 | for (Standard_Integer aY = -1; aY <= 1; aY += 2) |
1926 | { |
1927 | for (Standard_Integer aX = -1; aX <= 1; aX += 2) |
1928 | { |
1929 | OpenGl_Vec4 aOrigin (GLfloat(aX), |
1930 | GLfloat(aY), |
b27ab03d |
1931 | -1.0f, |
91c60b57 |
1932 | 1.0f); |
1933 | |
1934 | aOrigin = theUnview * aOrigin; |
1935 | |
1936 | aOrigin.x() = aOrigin.x() / aOrigin.w(); |
1937 | aOrigin.y() = aOrigin.y() / aOrigin.w(); |
1938 | aOrigin.z() = aOrigin.z() / aOrigin.w(); |
1939 | |
1940 | OpenGl_Vec4 aDirect (GLfloat(aX), |
1941 | GLfloat(aY), |
1942 | 1.0f, |
1943 | 1.0f); |
1944 | |
1945 | aDirect = theUnview * aDirect; |
1946 | |
1947 | aDirect.x() = aDirect.x() / aDirect.w(); |
1948 | aDirect.y() = aDirect.y() / aDirect.w(); |
1949 | aDirect.z() = aDirect.z() / aDirect.w(); |
1950 | |
1951 | aDirect = aDirect - aOrigin; |
1952 | |
91c60b57 |
1953 | theOrigins[aOriginIndex++] = OpenGl_Vec3 (static_cast<GLfloat> (aOrigin.x()), |
1954 | static_cast<GLfloat> (aOrigin.y()), |
1955 | static_cast<GLfloat> (aOrigin.z())); |
1956 | |
b0dc79bc |
1957 | theDirects[aDirectIndex++] = OpenGl_Vec3 (static_cast<GLfloat> (aDirect.x()), |
1958 | static_cast<GLfloat> (aDirect.y()), |
1959 | static_cast<GLfloat> (aDirect.z())); |
91c60b57 |
1960 | } |
1961 | } |
fc73a202 |
1962 | } |
265d4508 |
1963 | |
b27ab03d |
1964 | // ======================================================================= |
1965 | // function : updatePerspCameraPT |
1966 | // purpose : Generates viewing rays (path tracing, perspective camera) |
1967 | // ======================================================================= |
1968 | void OpenGl_View::updatePerspCameraPT (const OpenGl_Mat4& theOrientation, |
1969 | const OpenGl_Mat4& theViewMapping, |
1970 | Graphic3d_Camera::Projection theProjection, |
1971 | OpenGl_Mat4& theViewPr, |
1972 | OpenGl_Mat4& theUnview, |
1973 | const int theWinSizeX, |
1974 | const int theWinSizeY) |
1975 | { |
1976 | // compute view-projection matrix |
1977 | theViewPr = theViewMapping * theOrientation; |
1978 | |
1979 | // compute inverse view-projection matrix |
1980 | theViewPr.Inverted(theUnview); |
1981 | |
1982 | // get camera stereo params |
1983 | float anIOD = myCamera->GetIODType() == Graphic3d_Camera::IODType_Relative |
1984 | ? static_cast<float> (myCamera->IOD() * myCamera->Distance()) |
1985 | : static_cast<float> (myCamera->IOD()); |
1986 | |
1987 | float aZFocus = myCamera->ZFocusType() == Graphic3d_Camera::FocusType_Relative |
1988 | ? static_cast<float> (myCamera->ZFocus() * myCamera->Distance()) |
1989 | : static_cast<float> (myCamera->ZFocus()); |
1990 | |
1991 | // get camera view vectors |
1992 | const gp_Pnt anOrig = myCamera->Eye(); |
1993 | |
1994 | myEyeOrig = OpenGl_Vec3 (static_cast<float> (anOrig.X()), |
1995 | static_cast<float> (anOrig.Y()), |
1996 | static_cast<float> (anOrig.Z())); |
1997 | |
1998 | const gp_Dir aView = myCamera->Direction(); |
1999 | |
2000 | OpenGl_Vec3 anEyeViewMono = OpenGl_Vec3 (static_cast<float> (aView.X()), |
2001 | static_cast<float> (aView.Y()), |
2002 | static_cast<float> (aView.Z())); |
2003 | |
2004 | const gp_Dir anUp = myCamera->Up(); |
2005 | |
2006 | myEyeVert = OpenGl_Vec3 (static_cast<float> (anUp.X()), |
2007 | static_cast<float> (anUp.Y()), |
2008 | static_cast<float> (anUp.Z())); |
2009 | |
2010 | myEyeSide = OpenGl_Vec3::Cross (anEyeViewMono, myEyeVert); |
2011 | |
2012 | const double aScaleY = tan (myCamera->FOVy() / 360 * M_PI); |
2013 | const double aScaleX = theWinSizeX * aScaleY / theWinSizeY; |
2014 | |
2015 | myEyeSize = OpenGl_Vec2 (static_cast<float> (aScaleX), |
2016 | static_cast<float> (aScaleY)); |
2017 | |
2018 | if (theProjection == Graphic3d_Camera::Projection_Perspective) |
2019 | { |
2020 | myEyeView = anEyeViewMono; |
2021 | } |
2022 | else // stereo camera |
2023 | { |
2024 | // compute z-focus point |
2025 | OpenGl_Vec3 aZFocusPoint = myEyeOrig + anEyeViewMono * aZFocus; |
2026 | |
2027 | // compute stereo camera shift |
2028 | float aDx = theProjection == Graphic3d_Camera::Projection_MonoRightEye ? 0.5f * anIOD : -0.5f * anIOD; |
2029 | myEyeOrig += myEyeSide.Normalized() * aDx; |
2030 | |
2031 | // estimate new camera direction vector and correct its length |
2032 | myEyeView = (aZFocusPoint - myEyeOrig).Normalized(); |
2033 | myEyeView *= 1.f / anEyeViewMono.Dot (myEyeView); |
2034 | } |
2035 | } |
2036 | |
fc73a202 |
2037 | // ======================================================================= |
189f85a3 |
2038 | // function : uploadRaytraceData |
fc73a202 |
2039 | // purpose : Uploads ray-trace data to the GPU |
2040 | // ======================================================================= |
91c60b57 |
2041 | Standard_Boolean OpenGl_View::uploadRaytraceData (const Handle(OpenGl_Context)& theGlContext) |
fc73a202 |
2042 | { |
91c60b57 |
2043 | if (!theGlContext->IsGlGreaterEqual (3, 1)) |
fc73a202 |
2044 | { |
265d4508 |
2045 | #ifdef RAY_TRACE_PRINT_INFO |
fc73a202 |
2046 | std::cout << "Error: OpenGL version is less than 3.1" << std::endl; |
265d4508 |
2047 | #endif |
fc73a202 |
2048 | return Standard_False; |
e276548b |
2049 | } |
2050 | |
189f85a3 |
2051 | myAccumFrames = 0; // accumulation should be restarted |
2052 | |
25ef750e |
2053 | ///////////////////////////////////////////////////////////////////////////// |
2054 | // Prepare OpenGL textures |
2055 | |
91c60b57 |
2056 | if (theGlContext->arbTexBindless != NULL) |
25ef750e |
2057 | { |
2058 | // If OpenGL driver supports bindless textures we need |
2059 | // to get unique 64- bit handles for using on the GPU |
91c60b57 |
2060 | if (!myRaytraceGeometry.UpdateTextureHandles (theGlContext)) |
25ef750e |
2061 | { |
2062 | #ifdef RAY_TRACE_PRINT_INFO |
2063 | std::cout << "Error: Failed to get OpenGL texture handles" << std::endl; |
2064 | #endif |
2065 | return Standard_False; |
2066 | } |
2067 | } |
2068 | |
265d4508 |
2069 | ///////////////////////////////////////////////////////////////////////////// |
e2da917a |
2070 | // Create OpenGL BVH buffers |
265d4508 |
2071 | |
3a9b5dc8 |
2072 | if (mySceneNodeInfoTexture.IsNull()) // create scene BVH buffers |
e276548b |
2073 | { |
e2da917a |
2074 | mySceneNodeInfoTexture = new OpenGl_TextureBufferArb; |
2075 | mySceneMinPointTexture = new OpenGl_TextureBufferArb; |
2076 | mySceneMaxPointTexture = new OpenGl_TextureBufferArb; |
84c71f29 |
2077 | mySceneTransformTexture = new OpenGl_TextureBufferArb; |
265d4508 |
2078 | |
91c60b57 |
2079 | if (!mySceneNodeInfoTexture->Create (theGlContext) |
2080 | || !mySceneMinPointTexture->Create (theGlContext) |
2081 | || !mySceneMaxPointTexture->Create (theGlContext) |
2082 | || !mySceneTransformTexture->Create (theGlContext)) |
e276548b |
2083 | { |
fc73a202 |
2084 | #ifdef RAY_TRACE_PRINT_INFO |
e2da917a |
2085 | std::cout << "Error: Failed to create scene BVH buffers" << std::endl; |
fc73a202 |
2086 | #endif |
2087 | return Standard_False; |
2088 | } |
2089 | } |
5322131b |
2090 | |
3a9b5dc8 |
2091 | if (myGeometryVertexTexture.IsNull()) // create geometry buffers |
265d4508 |
2092 | { |
fc73a202 |
2093 | myGeometryVertexTexture = new OpenGl_TextureBufferArb; |
2094 | myGeometryNormalTexture = new OpenGl_TextureBufferArb; |
25ef750e |
2095 | myGeometryTexCrdTexture = new OpenGl_TextureBufferArb; |
fc73a202 |
2096 | myGeometryTriangTexture = new OpenGl_TextureBufferArb; |
e276548b |
2097 | |
91c60b57 |
2098 | if (!myGeometryVertexTexture->Create (theGlContext) |
2099 | || !myGeometryNormalTexture->Create (theGlContext) |
2100 | || !myGeometryTexCrdTexture->Create (theGlContext) |
2101 | || !myGeometryTriangTexture->Create (theGlContext)) |
fc73a202 |
2102 | { |
2103 | #ifdef RAY_TRACE_PRINT_INFO |
2104 | std::cout << "Error: Failed to create buffers for triangulation data" << std::endl; |
2105 | #endif |
2106 | return Standard_False; |
2107 | } |
265d4508 |
2108 | } |
5322131b |
2109 | |
e2da917a |
2110 | if (myRaytraceMaterialTexture.IsNull()) // create material buffer |
fc73a202 |
2111 | { |
2112 | myRaytraceMaterialTexture = new OpenGl_TextureBufferArb; |
e276548b |
2113 | |
91c60b57 |
2114 | if (!myRaytraceMaterialTexture->Create (theGlContext)) |
fc73a202 |
2115 | { |
2116 | #ifdef RAY_TRACE_PRINT_INFO |
2117 | std::cout << "Error: Failed to create buffers for material data" << std::endl; |
e276548b |
2118 | #endif |
fc73a202 |
2119 | return Standard_False; |
2120 | } |
2121 | } |
e2da917a |
2122 | |
84c71f29 |
2123 | ///////////////////////////////////////////////////////////////////////////// |
2124 | // Write transform buffer |
2125 | |
2126 | BVH_Mat4f* aNodeTransforms = new BVH_Mat4f[myRaytraceGeometry.Size()]; |
84c71f29 |
2127 | |
e2da917a |
2128 | bool aResult = true; |
2129 | |
84c71f29 |
2130 | for (Standard_Integer anElemIndex = 0; anElemIndex < myRaytraceGeometry.Size(); ++anElemIndex) |
2131 | { |
2132 | OpenGl_TriangleSet* aTriangleSet = dynamic_cast<OpenGl_TriangleSet*> ( |
2133 | myRaytraceGeometry.Objects().ChangeValue (anElemIndex).operator->()); |
2134 | |
f5b72419 |
2135 | const BVH_Transform<Standard_ShortReal, 4>* aTransform = dynamic_cast<const BVH_Transform<Standard_ShortReal, 4>* > (aTriangleSet->Properties().get()); |
84c71f29 |
2136 | Standard_ASSERT_RETURN (aTransform != NULL, |
2137 | "OpenGl_TriangleSet does not contain transform", Standard_False); |
2138 | |
2139 | aNodeTransforms[anElemIndex] = aTransform->Inversed(); |
84c71f29 |
2140 | } |
2141 | |
91c60b57 |
2142 | aResult &= mySceneTransformTexture->Init (theGlContext, 4, |
84c71f29 |
2143 | myRaytraceGeometry.Size() * 4, reinterpret_cast<const GLfloat*> (aNodeTransforms)); |
2144 | |
25ef750e |
2145 | delete [] aNodeTransforms; |
84c71f29 |
2146 | |
2147 | ///////////////////////////////////////////////////////////////////////////// |
bc8c79bb |
2148 | // Write geometry and bottom-level BVH buffers |
84c71f29 |
2149 | |
fc73a202 |
2150 | Standard_Size aTotalVerticesNb = 0; |
2151 | Standard_Size aTotalElementsNb = 0; |
2152 | Standard_Size aTotalBVHNodesNb = 0; |
265d4508 |
2153 | |
fc73a202 |
2154 | for (Standard_Integer anElemIndex = 0; anElemIndex < myRaytraceGeometry.Size(); ++anElemIndex) |
2155 | { |
2156 | OpenGl_TriangleSet* aTriangleSet = dynamic_cast<OpenGl_TriangleSet*> ( |
2157 | myRaytraceGeometry.Objects().ChangeValue (anElemIndex).operator->()); |
265d4508 |
2158 | |
fc73a202 |
2159 | Standard_ASSERT_RETURN (aTriangleSet != NULL, |
2160 | "Error: Failed to get triangulation of OpenGL element", Standard_False); |
2161 | |
2162 | aTotalVerticesNb += aTriangleSet->Vertices.size(); |
2163 | aTotalElementsNb += aTriangleSet->Elements.size(); |
e276548b |
2164 | |
f2474958 |
2165 | Standard_ASSERT_RETURN (!aTriangleSet->QuadBVH().IsNull(), |
fc73a202 |
2166 | "Error: Failed to get bottom-level BVH of OpenGL element", Standard_False); |
265d4508 |
2167 | |
f2474958 |
2168 | aTotalBVHNodesNb += aTriangleSet->QuadBVH()->NodeInfoBuffer().size(); |
fc73a202 |
2169 | } |
e276548b |
2170 | |
f2474958 |
2171 | aTotalBVHNodesNb += myRaytraceGeometry.QuadBVH()->NodeInfoBuffer().size(); |
e2da917a |
2172 | |
fc73a202 |
2173 | if (aTotalBVHNodesNb != 0) |
e276548b |
2174 | { |
e2da917a |
2175 | aResult &= mySceneNodeInfoTexture->Init ( |
91c60b57 |
2176 | theGlContext, 4, GLsizei (aTotalBVHNodesNb), static_cast<const GLuint*> (NULL)); |
e2da917a |
2177 | aResult &= mySceneMinPointTexture->Init ( |
91c60b57 |
2178 | theGlContext, 3, GLsizei (aTotalBVHNodesNb), static_cast<const GLfloat*> (NULL)); |
e2da917a |
2179 | aResult &= mySceneMaxPointTexture->Init ( |
91c60b57 |
2180 | theGlContext, 3, GLsizei (aTotalBVHNodesNb), static_cast<const GLfloat*> (NULL)); |
fc73a202 |
2181 | } |
265d4508 |
2182 | |
fc73a202 |
2183 | if (!aResult) |
2184 | { |
2185 | #ifdef RAY_TRACE_PRINT_INFO |
2186 | std::cout << "Error: Failed to upload buffers for bottom-level scene BVH" << std::endl; |
2187 | #endif |
2188 | return Standard_False; |
2189 | } |
e276548b |
2190 | |
fc73a202 |
2191 | if (aTotalElementsNb != 0) |
2192 | { |
25ef750e |
2193 | aResult &= myGeometryTriangTexture->Init ( |
91c60b57 |
2194 | theGlContext, 4, GLsizei (aTotalElementsNb), static_cast<const GLuint*> (NULL)); |
fc73a202 |
2195 | } |
265d4508 |
2196 | |
fc73a202 |
2197 | if (aTotalVerticesNb != 0) |
2198 | { |
25ef750e |
2199 | aResult &= myGeometryVertexTexture->Init ( |
91c60b57 |
2200 | theGlContext, 3, GLsizei (aTotalVerticesNb), static_cast<const GLfloat*> (NULL)); |
25ef750e |
2201 | aResult &= myGeometryNormalTexture->Init ( |
91c60b57 |
2202 | theGlContext, 3, GLsizei (aTotalVerticesNb), static_cast<const GLfloat*> (NULL)); |
25ef750e |
2203 | aResult &= myGeometryTexCrdTexture->Init ( |
91c60b57 |
2204 | theGlContext, 2, GLsizei (aTotalVerticesNb), static_cast<const GLfloat*> (NULL)); |
fc73a202 |
2205 | } |
265d4508 |
2206 | |
fc73a202 |
2207 | if (!aResult) |
2208 | { |
2209 | #ifdef RAY_TRACE_PRINT_INFO |
2210 | std::cout << "Error: Failed to upload buffers for scene geometry" << std::endl; |
2211 | #endif |
2212 | return Standard_False; |
2213 | } |
265d4508 |
2214 | |
f2474958 |
2215 | const QuadBvhHandle& aBVH = myRaytraceGeometry.QuadBVH(); |
91c60b57 |
2216 | |
2217 | if (aBVH->Length() > 0) |
1e99558f |
2218 | { |
91c60b57 |
2219 | aResult &= mySceneNodeInfoTexture->SubData (theGlContext, 0, aBVH->Length(), |
1e99558f |
2220 | reinterpret_cast<const GLuint*> (&aBVH->NodeInfoBuffer().front())); |
91c60b57 |
2221 | aResult &= mySceneMinPointTexture->SubData (theGlContext, 0, aBVH->Length(), |
1e99558f |
2222 | reinterpret_cast<const GLfloat*> (&aBVH->MinPointBuffer().front())); |
91c60b57 |
2223 | aResult &= mySceneMaxPointTexture->SubData (theGlContext, 0, aBVH->Length(), |
1e99558f |
2224 | reinterpret_cast<const GLfloat*> (&aBVH->MaxPointBuffer().front())); |
2225 | } |
e2da917a |
2226 | |
fc73a202 |
2227 | for (Standard_Integer aNodeIdx = 0; aNodeIdx < aBVH->Length(); ++aNodeIdx) |
2228 | { |
2229 | if (!aBVH->IsOuter (aNodeIdx)) |
2230 | continue; |
265d4508 |
2231 | |
fc73a202 |
2232 | OpenGl_TriangleSet* aTriangleSet = myRaytraceGeometry.TriangleSet (aNodeIdx); |
e276548b |
2233 | |
fc73a202 |
2234 | Standard_ASSERT_RETURN (aTriangleSet != NULL, |
2235 | "Error: Failed to get triangulation of OpenGL element", Standard_False); |
e276548b |
2236 | |
e2da917a |
2237 | Standard_Integer aBVHOffset = myRaytraceGeometry.AccelerationOffset (aNodeIdx); |
e276548b |
2238 | |
fc73a202 |
2239 | Standard_ASSERT_RETURN (aBVHOffset != OpenGl_RaytraceGeometry::INVALID_OFFSET, |
2240 | "Error: Failed to get offset for bottom-level BVH", Standard_False); |
e276548b |
2241 | |
f2474958 |
2242 | const Standard_Integer aBvhBuffersSize = aTriangleSet->QuadBVH()->Length(); |
265d4508 |
2243 | |
e2da917a |
2244 | if (aBvhBuffersSize != 0) |
fc73a202 |
2245 | { |
91c60b57 |
2246 | aResult &= mySceneNodeInfoTexture->SubData (theGlContext, aBVHOffset, aBvhBuffersSize, |
f2474958 |
2247 | reinterpret_cast<const GLuint*> (&aTriangleSet->QuadBVH()->NodeInfoBuffer().front())); |
91c60b57 |
2248 | aResult &= mySceneMinPointTexture->SubData (theGlContext, aBVHOffset, aBvhBuffersSize, |
f2474958 |
2249 | reinterpret_cast<const GLfloat*> (&aTriangleSet->QuadBVH()->MinPointBuffer().front())); |
91c60b57 |
2250 | aResult &= mySceneMaxPointTexture->SubData (theGlContext, aBVHOffset, aBvhBuffersSize, |
f2474958 |
2251 | reinterpret_cast<const GLfloat*> (&aTriangleSet->QuadBVH()->MaxPointBuffer().front())); |
91c60b57 |
2252 | |
fc73a202 |
2253 | if (!aResult) |
e276548b |
2254 | { |
fc73a202 |
2255 | #ifdef RAY_TRACE_PRINT_INFO |
2256 | std::cout << "Error: Failed to upload buffers for bottom-level scene BVHs" << std::endl; |
2257 | #endif |
e276548b |
2258 | return Standard_False; |
2259 | } |
2260 | } |
2261 | |
fc73a202 |
2262 | const Standard_Integer aVerticesOffset = myRaytraceGeometry.VerticesOffset (aNodeIdx); |
265d4508 |
2263 | |
fc73a202 |
2264 | Standard_ASSERT_RETURN (aVerticesOffset != OpenGl_RaytraceGeometry::INVALID_OFFSET, |
2265 | "Error: Failed to get offset for triangulation vertices of OpenGL element", Standard_False); |
265d4508 |
2266 | |
fc73a202 |
2267 | if (!aTriangleSet->Vertices.empty()) |
2268 | { |
91c60b57 |
2269 | aResult &= myGeometryNormalTexture->SubData (theGlContext, aVerticesOffset, |
2270 | GLsizei (aTriangleSet->Normals.size()), reinterpret_cast<const GLfloat*> (&aTriangleSet->Normals.front())); |
2271 | aResult &= myGeometryTexCrdTexture->SubData (theGlContext, aVerticesOffset, |
2272 | GLsizei (aTriangleSet->TexCrds.size()), reinterpret_cast<const GLfloat*> (&aTriangleSet->TexCrds.front())); |
2273 | aResult &= myGeometryVertexTexture->SubData (theGlContext, aVerticesOffset, |
2274 | GLsizei (aTriangleSet->Vertices.size()), reinterpret_cast<const GLfloat*> (&aTriangleSet->Vertices.front())); |
fc73a202 |
2275 | } |
e276548b |
2276 | |
fc73a202 |
2277 | const Standard_Integer anElementsOffset = myRaytraceGeometry.ElementsOffset (aNodeIdx); |
265d4508 |
2278 | |
fc73a202 |
2279 | Standard_ASSERT_RETURN (anElementsOffset != OpenGl_RaytraceGeometry::INVALID_OFFSET, |
2280 | "Error: Failed to get offset for triangulation elements of OpenGL element", Standard_False); |
e276548b |
2281 | |
fc73a202 |
2282 | if (!aTriangleSet->Elements.empty()) |
e276548b |
2283 | { |
91c60b57 |
2284 | aResult &= myGeometryTriangTexture->SubData (theGlContext, anElementsOffset, GLsizei (aTriangleSet->Elements.size()), |
5cff985a |
2285 | reinterpret_cast<const GLuint*> (&aTriangleSet->Elements.front())); |
e276548b |
2286 | } |
265d4508 |
2287 | |
fc73a202 |
2288 | if (!aResult) |
2289 | { |
2290 | #ifdef RAY_TRACE_PRINT_INFO |
2291 | std::cout << "Error: Failed to upload triangulation buffers for OpenGL element" << std::endl; |
e276548b |
2292 | #endif |
fc73a202 |
2293 | return Standard_False; |
2294 | } |
e276548b |
2295 | } |
e276548b |
2296 | |
25ef750e |
2297 | ///////////////////////////////////////////////////////////////////////////// |
2298 | // Write material buffer |
2299 | |
fc73a202 |
2300 | if (myRaytraceGeometry.Materials.size() != 0) |
2301 | { |
91c60b57 |
2302 | aResult &= myRaytraceMaterialTexture->Init (theGlContext, 4, |
05aa616d |
2303 | GLsizei (myRaytraceGeometry.Materials.size() * 19), myRaytraceGeometry.Materials.front().Packed()); |
25ef750e |
2304 | |
fc73a202 |
2305 | if (!aResult) |
2306 | { |
2307 | #ifdef RAY_TRACE_PRINT_INFO |
2308 | std::cout << "Error: Failed to upload material buffer" << std::endl; |
2309 | #endif |
2310 | return Standard_False; |
2311 | } |
2312 | } |
e276548b |
2313 | |
fc73a202 |
2314 | myIsRaytraceDataValid = myRaytraceGeometry.Objects().Size() != 0; |
e276548b |
2315 | |
fc73a202 |
2316 | #ifdef RAY_TRACE_PRINT_INFO |
e276548b |
2317 | |
f2474958 |
2318 | Standard_ShortReal aMemTrgUsed = 0.f; |
2319 | Standard_ShortReal aMemBvhUsed = 0.f; |
e276548b |
2320 | |
fc73a202 |
2321 | for (Standard_Integer anElemIdx = 0; anElemIdx < myRaytraceGeometry.Size(); ++anElemIdx) |
2322 | { |
f2474958 |
2323 | OpenGl_TriangleSet* aTriangleSet = dynamic_cast<OpenGl_TriangleSet*> (myRaytraceGeometry.Objects()(anElemIdx).get()); |
e276548b |
2324 | |
f2474958 |
2325 | aMemTrgUsed += static_cast<Standard_ShortReal> ( |
25ef750e |
2326 | aTriangleSet->Vertices.size() * sizeof (BVH_Vec3f)); |
f2474958 |
2327 | aMemTrgUsed += static_cast<Standard_ShortReal> ( |
25ef750e |
2328 | aTriangleSet->Normals.size() * sizeof (BVH_Vec3f)); |
f2474958 |
2329 | aMemTrgUsed += static_cast<Standard_ShortReal> ( |
25ef750e |
2330 | aTriangleSet->TexCrds.size() * sizeof (BVH_Vec2f)); |
f2474958 |
2331 | aMemTrgUsed += static_cast<Standard_ShortReal> ( |
fc73a202 |
2332 | aTriangleSet->Elements.size() * sizeof (BVH_Vec4i)); |
e276548b |
2333 | |
f2474958 |
2334 | aMemBvhUsed += static_cast<Standard_ShortReal> ( |
2335 | aTriangleSet->QuadBVH()->NodeInfoBuffer().size() * sizeof (BVH_Vec4i)); |
2336 | aMemBvhUsed += static_cast<Standard_ShortReal> ( |
2337 | aTriangleSet->QuadBVH()->MinPointBuffer().size() * sizeof (BVH_Vec3f)); |
2338 | aMemBvhUsed += static_cast<Standard_ShortReal> ( |
2339 | aTriangleSet->QuadBVH()->MaxPointBuffer().size() * sizeof (BVH_Vec3f)); |
fc73a202 |
2340 | } |
e276548b |
2341 | |
f2474958 |
2342 | aMemBvhUsed += static_cast<Standard_ShortReal> ( |
2343 | myRaytraceGeometry.QuadBVH()->NodeInfoBuffer().size() * sizeof (BVH_Vec4i)); |
2344 | aMemBvhUsed += static_cast<Standard_ShortReal> ( |
2345 | myRaytraceGeometry.QuadBVH()->MinPointBuffer().size() * sizeof (BVH_Vec3f)); |
2346 | aMemBvhUsed += static_cast<Standard_ShortReal> ( |
2347 | myRaytraceGeometry.QuadBVH()->MaxPointBuffer().size() * sizeof (BVH_Vec3f)); |
e276548b |
2348 | |
f2474958 |
2349 | std::cout << "GPU Memory Used (Mb):\n" |
2350 | << "\tFor mesh: " << aMemTrgUsed / 1048576 << "\n" |
2351 | << "\tFor BVHs: " << aMemBvhUsed / 1048576 << "\n"; |
e276548b |
2352 | |
fc73a202 |
2353 | #endif |
e276548b |
2354 | |
fc73a202 |
2355 | return aResult; |
2356 | } |
e276548b |
2357 | |
fc73a202 |
2358 | // ======================================================================= |
189f85a3 |
2359 | // function : updateRaytraceLightSources |
91c60b57 |
2360 | // purpose : Updates 3D scene light sources for ray-tracing |
fc73a202 |
2361 | // ======================================================================= |
91c60b57 |
2362 | Standard_Boolean OpenGl_View::updateRaytraceLightSources (const OpenGl_Mat4& theInvModelView, const Handle(OpenGl_Context)& theGlContext) |
fc73a202 |
2363 | { |
992ed6b3 |
2364 | std::vector<Handle(Graphic3d_CLight)> aLightSources; |
2365 | myRaytraceGeometry.Ambient = BVH_Vec4f (0.f, 0.f, 0.f, 0.f); |
dc89236f |
2366 | if (myShadingModel != Graphic3d_TOSM_UNLIT |
992ed6b3 |
2367 | && !myLights.IsNull()) |
6e728f3b |
2368 | { |
992ed6b3 |
2369 | const Graphic3d_Vec4& anAmbient = myLights->AmbientColor(); |
2370 | myRaytraceGeometry.Ambient = BVH_Vec4f (anAmbient.r(), anAmbient.g(), anAmbient.b(), 0.0f); |
91c60b57 |
2371 | |
6e728f3b |
2372 | // move positional light sources at the front of the list |
992ed6b3 |
2373 | aLightSources.reserve (myLights->Extent()); |
2374 | for (Graphic3d_LightSet::Iterator aLightIter (myLights, Graphic3d_LightSet::IterationFilter_ExcludeDisabledAndAmbient); |
2375 | aLightIter.More(); aLightIter.Next()) |
2376 | { |
2377 | const Graphic3d_CLight& aLight = *aLightIter.Value(); |
2378 | if (aLight.Type() != Graphic3d_TOLS_DIRECTIONAL) |
2379 | { |
2380 | aLightSources.push_back (aLightIter.Value()); |
2381 | } |
2382 | } |
2383 | |
2384 | for (Graphic3d_LightSet::Iterator aLightIter (myLights, Graphic3d_LightSet::IterationFilter_ExcludeDisabledAndAmbient); |
2385 | aLightIter.More(); aLightIter.Next()) |
2386 | { |
2387 | if (aLightIter.Value()->Type() == Graphic3d_TOLS_DIRECTIONAL) |
2388 | { |
2389 | aLightSources.push_back (aLightIter.Value()); |
2390 | } |
2391 | } |
6e728f3b |
2392 | } |
2393 | |
2394 | // get number of 'real' (not ambient) light sources |
992ed6b3 |
2395 | const size_t aNbLights = aLightSources.size(); |
6e728f3b |
2396 | Standard_Boolean wasUpdated = myRaytraceGeometry.Sources.size () != aNbLights; |
6e728f3b |
2397 | if (wasUpdated) |
2398 | { |
2399 | myRaytraceGeometry.Sources.resize (aNbLights); |
2400 | } |
2401 | |
6e728f3b |
2402 | for (size_t aLightIdx = 0, aRealIdx = 0; aLightIdx < aLightSources.size(); ++aLightIdx) |
91c60b57 |
2403 | { |
992ed6b3 |
2404 | const Graphic3d_CLight& aLight = *aLightSources[aLightIdx]; |
2405 | const Graphic3d_Vec4& aLightColor = aLight.PackedColor(); |
2406 | BVH_Vec4f aEmission (aLightColor.r() * aLight.Intensity(), |
2407 | aLightColor.g() * aLight.Intensity(), |
2408 | aLightColor.b() * aLight.Intensity(), |
6e728f3b |
2409 | 1.0f); |
91c60b57 |
2410 | |
992ed6b3 |
2411 | BVH_Vec4f aPosition (-aLight.PackedDirection().x(), |
2412 | -aLight.PackedDirection().y(), |
2413 | -aLight.PackedDirection().z(), |
91c60b57 |
2414 | 0.0f); |
2415 | |
992ed6b3 |
2416 | if (aLight.Type() != Graphic3d_TOLS_DIRECTIONAL) |
91c60b57 |
2417 | { |
992ed6b3 |
2418 | aPosition = BVH_Vec4f (static_cast<float>(aLight.Position().X()), |
2419 | static_cast<float>(aLight.Position().Y()), |
2420 | static_cast<float>(aLight.Position().Z()), |
91c60b57 |
2421 | 1.0f); |
189f85a3 |
2422 | |
6e728f3b |
2423 | // store smoothing radius in W-component |
992ed6b3 |
2424 | aEmission.w() = Max (aLight.Smoothness(), 0.f); |
189f85a3 |
2425 | } |
2426 | else |
2427 | { |
6e728f3b |
2428 | // store cosine of smoothing angle in W-component |
992ed6b3 |
2429 | aEmission.w() = cosf (Min (Max (aLight.Smoothness(), 0.f), static_cast<Standard_ShortReal> (M_PI / 2.0))); |
91c60b57 |
2430 | } |
2431 | |
992ed6b3 |
2432 | if (aLight.IsHeadlight()) |
91c60b57 |
2433 | { |
2434 | aPosition = theInvModelView * aPosition; |
2435 | } |
2436 | |
6e728f3b |
2437 | for (int aK = 0; aK < 4; ++aK) |
2438 | { |
2439 | wasUpdated |= (aEmission[aK] != myRaytraceGeometry.Sources[aRealIdx].Emission[aK]) |
2440 | || (aPosition[aK] != myRaytraceGeometry.Sources[aRealIdx].Position[aK]); |
2441 | } |
2442 | |
2443 | if (wasUpdated) |
2444 | { |
2445 | myRaytraceGeometry.Sources[aRealIdx] = OpenGl_RaytraceLight (aEmission, aPosition); |
2446 | } |
2447 | |
2448 | ++aRealIdx; |
91c60b57 |
2449 | } |
2450 | |
6e728f3b |
2451 | if (myRaytraceLightSrcTexture.IsNull()) // create light source buffer |
91c60b57 |
2452 | { |
2453 | myRaytraceLightSrcTexture = new OpenGl_TextureBufferArb; |
91c60b57 |
2454 | } |
189f85a3 |
2455 | |
6e728f3b |
2456 | if (myRaytraceGeometry.Sources.size() != 0 && wasUpdated) |
fc73a202 |
2457 | { |
91c60b57 |
2458 | const GLfloat* aDataPtr = myRaytraceGeometry.Sources.front().Packed(); |
2459 | if (!myRaytraceLightSrcTexture->Init (theGlContext, 4, GLsizei (myRaytraceGeometry.Sources.size() * 2), aDataPtr)) |
2460 | { |
2461 | #ifdef RAY_TRACE_PRINT_INFO |
2462 | std::cout << "Error: Failed to upload light source buffer" << std::endl; |
2463 | #endif |
2464 | return Standard_False; |
2465 | } |
e276548b |
2466 | |
6e728f3b |
2467 | myAccumFrames = 0; // accumulation should be restarted |
91c60b57 |
2468 | } |
e276548b |
2469 | |
6e728f3b |
2470 | return Standard_True; |
fc73a202 |
2471 | } |
2472 | |
25ef750e |
2473 | // ======================================================================= |
189f85a3 |
2474 | // function : setUniformState |
25ef750e |
2475 | // purpose : Sets uniform state for the given ray-tracing shader program |
2476 | // ======================================================================= |
3a9b5dc8 |
2477 | Standard_Boolean OpenGl_View::setUniformState (const Standard_Integer theProgramId, |
2478 | const Standard_Integer theWinSizeX, |
2479 | const Standard_Integer theWinSizeY, |
b27ab03d |
2480 | Graphic3d_Camera::Projection theProjection, |
91c60b57 |
2481 | const Handle(OpenGl_Context)& theGlContext) |
25ef750e |
2482 | { |
3a9b5dc8 |
2483 | // Get projection state |
2484 | OpenGl_MatrixState<Standard_ShortReal>& aCntxProjectionState = theGlContext->ProjectionState; |
2485 | |
2486 | OpenGl_Mat4 aViewPrjMat; |
2487 | OpenGl_Mat4 anUnviewMat; |
2488 | OpenGl_Vec3 aOrigins[4]; |
2489 | OpenGl_Vec3 aDirects[4]; |
2490 | |
b27ab03d |
2491 | if (myCamera->IsOrthographic() |
2492 | || !myRenderParams.IsGlobalIlluminationEnabled) |
2493 | { |
2494 | updateCamera (myCamera->OrientationMatrixF(), |
2495 | aCntxProjectionState.Current(), |
2496 | aOrigins, |
2497 | aDirects, |
2498 | aViewPrjMat, |
2499 | anUnviewMat); |
2500 | } |
2501 | else |
2502 | { |
2503 | updatePerspCameraPT (myCamera->OrientationMatrixF(), |
2504 | aCntxProjectionState.Current(), |
2505 | theProjection, |
2506 | aViewPrjMat, |
2507 | anUnviewMat, |
2508 | theWinSizeX, |
2509 | theWinSizeY); |
2510 | } |
3a9b5dc8 |
2511 | |
2512 | Handle(OpenGl_ShaderProgram)& theProgram = theProgramId == 0 |
2513 | ? myRaytraceProgram |
2514 | : myPostFSAAProgram; |
91c60b57 |
2515 | |
2516 | if (theProgram.IsNull()) |
25ef750e |
2517 | { |
2518 | return Standard_False; |
2519 | } |
b27ab03d |
2520 | |
2521 | theProgram->SetUniform(theGlContext, "uEyeOrig", myEyeOrig); |
2522 | theProgram->SetUniform(theGlContext, "uEyeView", myEyeView); |
2523 | theProgram->SetUniform(theGlContext, "uEyeVert", myEyeVert); |
2524 | theProgram->SetUniform(theGlContext, "uEyeSide", myEyeSide); |
2525 | theProgram->SetUniform(theGlContext, "uEyeSize", myEyeSize); |
2526 | |
2527 | theProgram->SetUniform(theGlContext, "uApertureRadius", myRenderParams.CameraApertureRadius); |
2528 | theProgram->SetUniform(theGlContext, "uFocalPlaneDist", myRenderParams.CameraFocalPlaneDist); |
2529 | |
25ef750e |
2530 | // Set camera state |
189f85a3 |
2531 | theProgram->SetUniform (theGlContext, |
3a9b5dc8 |
2532 | myUniformLocations[theProgramId][OpenGl_RT_uOriginLB], aOrigins[0]); |
189f85a3 |
2533 | theProgram->SetUniform (theGlContext, |
3a9b5dc8 |
2534 | myUniformLocations[theProgramId][OpenGl_RT_uOriginRB], aOrigins[1]); |
189f85a3 |
2535 | theProgram->SetUniform (theGlContext, |
3a9b5dc8 |
2536 | myUniformLocations[theProgramId][OpenGl_RT_uOriginLT], aOrigins[2]); |
189f85a3 |
2537 | theProgram->SetUniform (theGlContext, |
3a9b5dc8 |
2538 | myUniformLocations[theProgramId][OpenGl_RT_uOriginRT], aOrigins[3]); |
189f85a3 |
2539 | theProgram->SetUniform (theGlContext, |
3a9b5dc8 |
2540 | myUniformLocations[theProgramId][OpenGl_RT_uDirectLB], aDirects[0]); |
189f85a3 |
2541 | theProgram->SetUniform (theGlContext, |
3a9b5dc8 |
2542 | myUniformLocations[theProgramId][OpenGl_RT_uDirectRB], aDirects[1]); |
189f85a3 |
2543 | theProgram->SetUniform (theGlContext, |
3a9b5dc8 |
2544 | myUniformLocations[theProgramId][OpenGl_RT_uDirectLT], aDirects[2]); |
189f85a3 |
2545 | theProgram->SetUniform (theGlContext, |
3a9b5dc8 |
2546 | myUniformLocations[theProgramId][OpenGl_RT_uDirectRT], aDirects[3]); |
1d865689 |
2547 | theProgram->SetUniform (theGlContext, |
3a9b5dc8 |
2548 | myUniformLocations[theProgramId][OpenGl_RT_uViewPrMat], aViewPrjMat); |
189f85a3 |
2549 | theProgram->SetUniform (theGlContext, |
3a9b5dc8 |
2550 | myUniformLocations[theProgramId][OpenGl_RT_uUnviewMat], anUnviewMat); |
312a4043 |
2551 | |
b09447ed |
2552 | // Set screen dimensions |
2553 | myRaytraceProgram->SetUniform (theGlContext, |
2554 | myUniformLocations[theProgramId][OpenGl_RT_uWinSizeX], theWinSizeX); |
2555 | myRaytraceProgram->SetUniform (theGlContext, |
2556 | myUniformLocations[theProgramId][OpenGl_RT_uWinSizeY], theWinSizeY); |
2557 | |
2558 | // Set 3D scene parameters |
189f85a3 |
2559 | theProgram->SetUniform (theGlContext, |
91c60b57 |
2560 | myUniformLocations[theProgramId][OpenGl_RT_uSceneRad], myRaytraceSceneRadius); |
189f85a3 |
2561 | theProgram->SetUniform (theGlContext, |
91c60b57 |
2562 | myUniformLocations[theProgramId][OpenGl_RT_uSceneEps], myRaytraceSceneEpsilon); |
3a9b5dc8 |
2563 | |
b09447ed |
2564 | // Set light source parameters |
3a9b5dc8 |
2565 | const Standard_Integer aLightSourceBufferSize = |
2566 | static_cast<Standard_Integer> (myRaytraceGeometry.Sources.size()); |
b09447ed |
2567 | |
189f85a3 |
2568 | theProgram->SetUniform (theGlContext, |
91c60b57 |
2569 | myUniformLocations[theProgramId][OpenGl_RT_uLightCount], aLightSourceBufferSize); |
8c820969 |
2570 | |
25ef750e |
2571 | // Set array of 64-bit texture handles |
91c60b57 |
2572 | if (theGlContext->arbTexBindless != NULL && myRaytraceGeometry.HasTextures()) |
25ef750e |
2573 | { |
47e9c178 |
2574 | const std::vector<GLuint64>& aTextures = myRaytraceGeometry.TextureHandles(); |
2575 | |
189f85a3 |
2576 | theProgram->SetUniform (theGlContext, myUniformLocations[theProgramId][OpenGl_RT_uTexSamplersArray], |
3a9b5dc8 |
2577 | static_cast<GLsizei> (aTextures.size()), reinterpret_cast<const OpenGl_Vec2u*> (&aTextures.front())); |
25ef750e |
2578 | } |
2579 | |
ba00aab7 |
2580 | // Set background colors (only vertical gradient background supported) |
2581 | OpenGl_Vec4 aBackColorTop = myBgColor, aBackColorBot = myBgColor; |
077a220c |
2582 | if (myBackgrounds[Graphic3d_TOB_GRADIENT] != NULL |
2583 | && myBackgrounds[Graphic3d_TOB_GRADIENT]->IsDefined()) |
25ef750e |
2584 | { |
ba00aab7 |
2585 | aBackColorTop = myBackgrounds[Graphic3d_TOB_GRADIENT]->GradientColor (0); |
2586 | aBackColorBot = myBackgrounds[Graphic3d_TOB_GRADIENT]->GradientColor (1); |
67c12d80 |
2587 | } |
ba00aab7 |
2588 | aBackColorTop = theGlContext->Vec4FromQuantityColor (aBackColorTop); |
2589 | aBackColorBot = theGlContext->Vec4FromQuantityColor (aBackColorBot); |
2590 | theProgram->SetUniform (theGlContext, myUniformLocations[theProgramId][OpenGl_RT_uBackColorTop], aBackColorTop); |
2591 | theProgram->SetUniform (theGlContext, myUniformLocations[theProgramId][OpenGl_RT_uBackColorBot], aBackColorBot); |
25ef750e |
2592 | |
b09447ed |
2593 | // Set environment map parameters |
cc8cbabe |
2594 | const Standard_Boolean toDisableEnvironmentMap = myTextureEnv.IsNull() |
2595 | || myTextureEnv->IsEmpty() |
2596 | || !myTextureEnv->First()->IsValid(); |
2597 | |
6e728f3b |
2598 | theProgram->SetUniform (theGlContext, |
2599 | myUniformLocations[theProgramId][OpenGl_RT_uSphereMapEnabled], toDisableEnvironmentMap ? 0 : 1); |
2600 | |
189f85a3 |
2601 | theProgram->SetUniform (theGlContext, |
c357e426 |
2602 | myUniformLocations[theProgramId][OpenGl_RT_uSphereMapForBack], myRenderParams.UseEnvironmentMapBackground ? 1 : 0); |
189f85a3 |
2603 | |
b09447ed |
2604 | if (myRenderParams.IsGlobalIlluminationEnabled) // GI parameters |
2605 | { |
2606 | theProgram->SetUniform (theGlContext, |
2607 | myUniformLocations[theProgramId][OpenGl_RT_uMaxRadiance], myRenderParams.RadianceClampingValue); |
2608 | |
2609 | theProgram->SetUniform (theGlContext, |
2610 | myUniformLocations[theProgramId][OpenGl_RT_uBlockedRngEnabled], myRenderParams.CoherentPathTracingMode ? 1 : 0); |
2611 | |
2612 | // Check whether we should restart accumulation for run-time parameters |
2613 | if (myRenderParams.RadianceClampingValue != myRaytraceParameters.RadianceClampingValue |
2614 | || myRenderParams.UseEnvironmentMapBackground != myRaytraceParameters.UseEnvMapForBackground) |
2615 | { |
2616 | myAccumFrames = 0; // accumulation should be restarted |
2617 | |
2618 | myRaytraceParameters.RadianceClampingValue = myRenderParams.RadianceClampingValue; |
2619 | myRaytraceParameters.UseEnvMapForBackground = myRenderParams.UseEnvironmentMapBackground; |
2620 | } |
2621 | } |
2622 | else // RT parameters |
2623 | { |
2624 | // Set ambient light source |
2625 | theProgram->SetUniform (theGlContext, |
2626 | myUniformLocations[theProgramId][OpenGl_RT_uLightAmbnt], myRaytraceGeometry.Ambient); |
2627 | |
2628 | // Enable/disable run-time ray-tracing effects |
2629 | theProgram->SetUniform (theGlContext, |
2630 | myUniformLocations[theProgramId][OpenGl_RT_uShadowsEnabled], myRenderParams.IsShadowEnabled ? 1 : 0); |
2631 | theProgram->SetUniform (theGlContext, |
2632 | myUniformLocations[theProgramId][OpenGl_RT_uReflectEnabled], myRenderParams.IsReflectionEnabled ? 1 : 0); |
2633 | } |
2634 | |
189f85a3 |
2635 | return Standard_True; |
25ef750e |
2636 | } |
2637 | |
91c60b57 |
2638 | // ======================================================================= |
189f85a3 |
2639 | // function : bindRaytraceTextures |
91c60b57 |
2640 | // purpose : Binds ray-trace textures to corresponding texture units |
2641 | // ======================================================================= |
66d1cdc6 |
2642 | void OpenGl_View::bindRaytraceTextures (const Handle(OpenGl_Context)& theGlContext, |
2643 | int theStereoView) |
91c60b57 |
2644 | { |
66d1cdc6 |
2645 | if (myRaytraceParameters.AdaptiveScreenSampling |
2646 | && myRaytraceParameters.GlobalIllumination) |
3a9b5dc8 |
2647 | { |
2648 | #if !defined(GL_ES_VERSION_2_0) |
66d1cdc6 |
2649 | theGlContext->core42->glBindImageTexture (OpenGl_RT_OutputImage, |
2650 | myRaytraceOutputTexture[theStereoView]->TextureId(), 0, GL_TRUE, 0, GL_READ_WRITE, GL_R32F); |
2651 | theGlContext->core42->glBindImageTexture (OpenGl_RT_VisualErrorImage, |
2652 | myRaytraceVisualErrorTexture[theStereoView]->TextureId(), 0, GL_TRUE, 0, GL_READ_WRITE, GL_R32I); |
e084dbbc |
2653 | if (myRaytraceParameters.AdaptiveScreenSamplingAtomic) |
2654 | { |
2655 | theGlContext->core42->glBindImageTexture (OpenGl_RT_TileOffsetsImage, |
2656 | myRaytraceTileOffsetsTexture[theStereoView]->TextureId(), 0, GL_TRUE, 0, GL_READ_ONLY, GL_RG32I); |
2657 | } |
2658 | else |
2659 | { |
2660 | theGlContext->core42->glBindImageTexture (OpenGl_RT_TileSamplesImage, |
2661 | myRaytraceTileSamplesTexture[theStereoView]->TextureId(), 0, GL_TRUE, 0, GL_READ_WRITE, GL_R32I); |
2662 | } |
66d1cdc6 |
2663 | #else |
2664 | (void )theStereoView; |
2665 | #endif |
3a9b5dc8 |
2666 | } |
2667 | |
cc8cbabe |
2668 | if (!myTextureEnv.IsNull() |
2669 | && !myTextureEnv->IsEmpty() |
2670 | && myTextureEnv->First()->IsValid()) |
6e728f3b |
2671 | { |
cc8cbabe |
2672 | myTextureEnv->First()->Bind (theGlContext, OpenGl_RT_EnvironmentMapTexture); |
6e728f3b |
2673 | } |
2674 | |
cc8cbabe |
2675 | mySceneMinPointTexture ->BindTexture (theGlContext, OpenGl_RT_SceneMinPointTexture); |
2676 | mySceneMaxPointTexture ->BindTexture (theGlContext, OpenGl_RT_SceneMaxPointTexture); |
2677 | mySceneNodeInfoTexture ->BindTexture (theGlContext, OpenGl_RT_SceneNodeInfoTexture); |
2678 | myGeometryVertexTexture ->BindTexture (theGlContext, OpenGl_RT_GeometryVertexTexture); |
2679 | myGeometryNormalTexture ->BindTexture (theGlContext, OpenGl_RT_GeometryNormalTexture); |
2680 | myGeometryTexCrdTexture ->BindTexture (theGlContext, OpenGl_RT_GeometryTexCrdTexture); |
2681 | myGeometryTriangTexture ->BindTexture (theGlContext, OpenGl_RT_GeometryTriangTexture); |
2682 | mySceneTransformTexture ->BindTexture (theGlContext, OpenGl_RT_SceneTransformTexture); |
2683 | myRaytraceMaterialTexture->BindTexture (theGlContext, OpenGl_RT_RaytraceMaterialTexture); |
2684 | myRaytraceLightSrcTexture->BindTexture (theGlContext, OpenGl_RT_RaytraceLightSrcTexture); |
91c60b57 |
2685 | } |
2686 | |
2687 | // ======================================================================= |
189f85a3 |
2688 | // function : unbindRaytraceTextures |
91c60b57 |
2689 | // purpose : Unbinds ray-trace textures from corresponding texture units |
2690 | // ======================================================================= |
2691 | void OpenGl_View::unbindRaytraceTextures (const Handle(OpenGl_Context)& theGlContext) |
2692 | { |
cc8cbabe |
2693 | mySceneMinPointTexture ->UnbindTexture (theGlContext, OpenGl_RT_SceneMinPointTexture); |
2694 | mySceneMaxPointTexture ->UnbindTexture (theGlContext, OpenGl_RT_SceneMaxPointTexture); |
2695 | mySceneNodeInfoTexture ->UnbindTexture (theGlContext, OpenGl_RT_SceneNodeInfoTexture); |
2696 | myGeometryVertexTexture ->UnbindTexture (theGlContext, OpenGl_RT_GeometryVertexTexture); |
2697 | myGeometryNormalTexture ->UnbindTexture (theGlContext, OpenGl_RT_GeometryNormalTexture); |
2698 | myGeometryTexCrdTexture ->UnbindTexture (theGlContext, OpenGl_RT_GeometryTexCrdTexture); |
2699 | myGeometryTriangTexture ->UnbindTexture (theGlContext, OpenGl_RT_GeometryTriangTexture); |
2700 | mySceneTransformTexture ->UnbindTexture (theGlContext, OpenGl_RT_SceneTransformTexture); |
2701 | myRaytraceMaterialTexture->UnbindTexture (theGlContext, OpenGl_RT_RaytraceMaterialTexture); |
2702 | myRaytraceLightSrcTexture->UnbindTexture (theGlContext, OpenGl_RT_RaytraceLightSrcTexture); |
91c60b57 |
2703 | |
91c60b57 |
2704 | theGlContext->core15fwd->glActiveTexture (GL_TEXTURE0); |
2705 | } |
2706 | |
fc73a202 |
2707 | // ======================================================================= |
189f85a3 |
2708 | // function : runRaytraceShaders |
fc73a202 |
2709 | // purpose : Runs ray-tracing shader programs |
2710 | // ======================================================================= |
c357e426 |
2711 | Standard_Boolean OpenGl_View::runRaytraceShaders (const Standard_Integer theSizeX, |
91c60b57 |
2712 | const Standard_Integer theSizeY, |
bf02aa7d |
2713 | Graphic3d_Camera::Projection theProjection, |
38a0206f |
2714 | OpenGl_FrameBuffer* theReadDrawFbo, |
91c60b57 |
2715 | const Handle(OpenGl_Context)& theGlContext) |
fc73a202 |
2716 | { |
3a9b5dc8 |
2717 | Standard_Boolean aResult = theGlContext->BindProgram (myRaytraceProgram); |
189f85a3 |
2718 | |
3a9b5dc8 |
2719 | aResult &= setUniformState (0, |
2720 | theSizeX, |
2721 | theSizeY, |
b27ab03d |
2722 | theProjection, |
3a9b5dc8 |
2723 | theGlContext); |
bf02aa7d |
2724 | |
3a9b5dc8 |
2725 | if (myRaytraceParameters.GlobalIllumination) // path tracing |
189f85a3 |
2726 | { |
66d1cdc6 |
2727 | aResult &= runPathtrace (theSizeX, theSizeY, theProjection, theGlContext); |
2728 | aResult &= runPathtraceOut (theProjection, theReadDrawFbo, theGlContext); |
189f85a3 |
2729 | } |
3a9b5dc8 |
2730 | else // Whitted-style ray-tracing |
fc73a202 |
2731 | { |
3a9b5dc8 |
2732 | aResult &= runRaytrace (theSizeX, theSizeY, theProjection, theReadDrawFbo, theGlContext); |
fc73a202 |
2733 | } |
2734 | |
3a9b5dc8 |
2735 | return aResult; |
2736 | } |
fc73a202 |
2737 | |
3a9b5dc8 |
2738 | // ======================================================================= |
2739 | // function : runRaytrace |
2740 | // purpose : Runs Whitted-style ray-tracing |
2741 | // ======================================================================= |
2742 | Standard_Boolean OpenGl_View::runRaytrace (const Standard_Integer theSizeX, |
2743 | const Standard_Integer theSizeY, |
2744 | Graphic3d_Camera::Projection theProjection, |
2745 | OpenGl_FrameBuffer* theReadDrawFbo, |
2746 | const Handle(OpenGl_Context)& theGlContext) |
2747 | { |
2748 | Standard_Boolean aResult = Standard_True; |
fc73a202 |
2749 | |
3a9b5dc8 |
2750 | // Choose proper set of frame buffers for stereo rendering |
66d1cdc6 |
2751 | const Standard_Integer aFBOIdx = (theProjection == Graphic3d_Camera::Projection_MonoRightEye) ? 1 : 0; |
2752 | bindRaytraceTextures (theGlContext, aFBOIdx); |
3a9b5dc8 |
2753 | |
2754 | if (myRenderParams.IsAntialiasingEnabled) // if second FSAA pass is used |
2755 | { |
2756 | myRaytraceFBO1[aFBOIdx]->BindBuffer (theGlContext); |
2757 | |
2758 | glClear (GL_DEPTH_BUFFER_BIT); // render the image with depth |
fc73a202 |
2759 | } |
25ef750e |
2760 | |
189f85a3 |
2761 | theGlContext->core20fwd->glDrawArrays (GL_TRIANGLES, 0, 6); |
fc73a202 |
2762 | |
3a9b5dc8 |
2763 | if (myRenderParams.IsAntialiasingEnabled) |
189f85a3 |
2764 | { |
3a9b5dc8 |
2765 | glDisable (GL_DEPTH_TEST); // improve jagged edges without depth buffer |
1d865689 |
2766 | |
3a9b5dc8 |
2767 | // bind ray-tracing output image as input |
cc8cbabe |
2768 | myRaytraceFBO1[aFBOIdx]->ColorTexture()->Bind (theGlContext, OpenGl_RT_FsaaInputTexture); |
189f85a3 |
2769 | |
2770 | aResult &= theGlContext->BindProgram (myPostFSAAProgram); |
2771 | |
3a9b5dc8 |
2772 | aResult &= setUniformState (1 /* FSAA ID */, |
2773 | theSizeX, |
2774 | theSizeY, |
b27ab03d |
2775 | theProjection, |
189f85a3 |
2776 | theGlContext); |
2777 | |
91c60b57 |
2778 | // Perform multi-pass adaptive FSAA using ping-pong technique. |
2779 | // We use 'FLIPTRI' sampling pattern changing for every pixel |
2780 | // (3 additional samples per pixel, the 1st sample is already |
2781 | // available from initial ray-traced image). |
2782 | for (Standard_Integer anIt = 1; anIt < 4; ++anIt) |
50d0e1ce |
2783 | { |
91c60b57 |
2784 | GLfloat aOffsetX = 1.f / theSizeX; |
2785 | GLfloat aOffsetY = 1.f / theSizeY; |
50d0e1ce |
2786 | |
91c60b57 |
2787 | if (anIt == 1) |
2788 | { |
2789 | aOffsetX *= -0.55f; |
2790 | aOffsetY *= 0.55f; |
2791 | } |
2792 | else if (anIt == 2) |
2793 | { |
2794 | aOffsetX *= 0.00f; |
2795 | aOffsetY *= -0.55f; |
2796 | } |
2797 | else if (anIt == 3) |
2798 | { |
2799 | aOffsetX *= 0.55f; |
2800 | aOffsetY *= 0.00f; |
2801 | } |
fc73a202 |
2802 | |
91c60b57 |
2803 | aResult &= myPostFSAAProgram->SetUniform (theGlContext, |
2804 | myUniformLocations[1][OpenGl_RT_uSamples], anIt + 1); |
2805 | aResult &= myPostFSAAProgram->SetUniform (theGlContext, |
2806 | myUniformLocations[1][OpenGl_RT_uOffsetX], aOffsetX); |
2807 | aResult &= myPostFSAAProgram->SetUniform (theGlContext, |
2808 | myUniformLocations[1][OpenGl_RT_uOffsetY], aOffsetY); |
fc73a202 |
2809 | |
3a9b5dc8 |
2810 | Handle(OpenGl_FrameBuffer)& aFramebuffer = anIt % 2 |
2811 | ? myRaytraceFBO2[aFBOIdx] |
2812 | : myRaytraceFBO1[aFBOIdx]; |
fc73a202 |
2813 | |
d9e72440 |
2814 | aFramebuffer->BindBuffer (theGlContext); |
50d0e1ce |
2815 | |
3a9b5dc8 |
2816 | // perform adaptive FSAA pass |
91c60b57 |
2817 | theGlContext->core20fwd->glDrawArrays (GL_TRIANGLES, 0, 6); |
e276548b |
2818 | |
cc8cbabe |
2819 | aFramebuffer->ColorTexture()->Bind (theGlContext, OpenGl_RT_FsaaInputTexture); |
e276548b |
2820 | } |
d9e72440 |
2821 | |
66d1cdc6 |
2822 | const Handle(OpenGl_FrameBuffer)& aRenderImageFramebuffer = myRaytraceFBO2[aFBOIdx]; |
2823 | const Handle(OpenGl_FrameBuffer)& aDepthSourceFramebuffer = myRaytraceFBO1[aFBOIdx]; |
d9e72440 |
2824 | |
3a9b5dc8 |
2825 | glEnable (GL_DEPTH_TEST); |
d9e72440 |
2826 | |
3a9b5dc8 |
2827 | // Display filtered image |
d9e72440 |
2828 | theGlContext->BindProgram (myOutImageProgram); |
2829 | |
d9e72440 |
2830 | if (theReadDrawFbo != NULL) |
2831 | { |
2832 | theReadDrawFbo->BindBuffer (theGlContext); |
2833 | } |
2834 | else |
2835 | { |
3a9b5dc8 |
2836 | aRenderImageFramebuffer->UnbindBuffer (theGlContext); |
d9e72440 |
2837 | } |
2838 | |
cc8cbabe |
2839 | aRenderImageFramebuffer->ColorTexture() ->Bind (theGlContext, OpenGl_RT_PrevAccumTexture); |
2840 | aDepthSourceFramebuffer->DepthStencilTexture()->Bind (theGlContext, OpenGl_RT_RaytraceDepthTexture); |
d9e72440 |
2841 | |
3a9b5dc8 |
2842 | // copy the output image with depth values |
d9e72440 |
2843 | theGlContext->core20fwd->glDrawArrays (GL_TRIANGLES, 0, 6); |
2844 | |
cc8cbabe |
2845 | aDepthSourceFramebuffer->DepthStencilTexture()->Unbind (theGlContext, OpenGl_RT_RaytraceDepthTexture); |
2846 | aRenderImageFramebuffer->ColorTexture() ->Unbind (theGlContext, OpenGl_RT_PrevAccumTexture); |
e276548b |
2847 | } |
fc73a202 |
2848 | |
91c60b57 |
2849 | unbindRaytraceTextures (theGlContext); |
a89742cf |
2850 | |
91c60b57 |
2851 | theGlContext->BindProgram (NULL); |
fc73a202 |
2852 | |
91c60b57 |
2853 | return aResult; |
e276548b |
2854 | } |
2855 | |
3a9b5dc8 |
2856 | // ======================================================================= |
2857 | // function : runPathtrace |
2858 | // purpose : Runs path tracing shader |
2859 | // ======================================================================= |
4eaaf9d8 |
2860 | Standard_Boolean OpenGl_View::runPathtrace (const Standard_Integer theSizeX, |
2861 | const Standard_Integer theSizeY, |
2862 | const Graphic3d_Camera::Projection theProjection, |
3a9b5dc8 |
2863 | const Handle(OpenGl_Context)& theGlContext) |
2864 | { |
6e728f3b |
2865 | if (myToUpdateEnvironmentMap) // check whether the map was changed |
2866 | { |
2867 | myAccumFrames = myToUpdateEnvironmentMap = 0; |
2868 | } |
b27ab03d |
2869 | |
2870 | if (myRenderParams.CameraApertureRadius != myPrevCameraApertureRadius |
2871 | || myRenderParams.CameraFocalPlaneDist != myPrevCameraFocalPlaneDist) |
2872 | { |
b27ab03d |
2873 | myPrevCameraApertureRadius = myRenderParams.CameraApertureRadius; |
2874 | myPrevCameraFocalPlaneDist = myRenderParams.CameraFocalPlaneDist; |
b27ab03d |
2875 | myAccumFrames = 0; |
2876 | } |
2877 | |
2878 | // Choose proper set of frame buffers for stereo rendering |
66d1cdc6 |
2879 | const Standard_Integer aFBOIdx = (theProjection == Graphic3d_Camera::Projection_MonoRightEye) ? 1 : 0; |
6e728f3b |
2880 | |
3a9b5dc8 |
2881 | if (myRaytraceParameters.AdaptiveScreenSampling) |
2882 | { |
2883 | if (myAccumFrames == 0) |
2884 | { |
2885 | myTileSampler.Reset(); // reset tile sampler to its initial state |
3a9b5dc8 |
2886 | |
b27ab03d |
2887 | // Adaptive sampling is starting at the second frame |
e084dbbc |
2888 | if (myRaytraceParameters.AdaptiveScreenSamplingAtomic) |
2889 | { |
2890 | myTileSampler.UploadOffsets (theGlContext, myRaytraceTileOffsetsTexture[aFBOIdx], false); |
2891 | } |
2892 | else |
2893 | { |
2894 | myTileSampler.UploadSamples (theGlContext, myRaytraceTileSamplesTexture[aFBOIdx], false); |
2895 | } |
3a9b5dc8 |
2896 | |
66d1cdc6 |
2897 | #if !defined(GL_ES_VERSION_2_0) |
2898 | theGlContext->core44->glClearTexImage (myRaytraceOutputTexture[aFBOIdx]->TextureId(), 0, GL_RED, GL_FLOAT, NULL); |
2899 | #endif |
2900 | } |
b27ab03d |
2901 | |
66d1cdc6 |
2902 | // Clear adaptive screen sampling images |
2903 | #if !defined(GL_ES_VERSION_2_0) |
2904 | theGlContext->core44->glClearTexImage (myRaytraceVisualErrorTexture[aFBOIdx]->TextureId(), 0, GL_RED_INTEGER, GL_INT, NULL); |
2905 | #endif |
2906 | } |
3a9b5dc8 |
2907 | |
66d1cdc6 |
2908 | bindRaytraceTextures (theGlContext, aFBOIdx); |
3a9b5dc8 |
2909 | |
66d1cdc6 |
2910 | const Handle(OpenGl_FrameBuffer)& anAccumImageFramebuffer = myAccumFrames % 2 ? myRaytraceFBO2[aFBOIdx] : myRaytraceFBO1[aFBOIdx]; |
cc8cbabe |
2911 | anAccumImageFramebuffer->ColorTexture()->Bind (theGlContext, OpenGl_RT_PrevAccumTexture); |
3a9b5dc8 |
2912 | |
66d1cdc6 |
2913 | // Set frame accumulation weight |
2914 | myRaytraceProgram->SetUniform (theGlContext, myUniformLocations[0][OpenGl_RT_uAccumSamples], myAccumFrames); |
3a9b5dc8 |
2915 | |
66d1cdc6 |
2916 | // Set image uniforms for render program |
3a9b5dc8 |
2917 | if (myRaytraceParameters.AdaptiveScreenSampling) |
2918 | { |
66d1cdc6 |
2919 | myRaytraceProgram->SetUniform (theGlContext, myUniformLocations[0][OpenGl_RT_uRenderImage], OpenGl_RT_OutputImage); |
e084dbbc |
2920 | myRaytraceProgram->SetUniform (theGlContext, myUniformLocations[0][OpenGl_RT_uTilesImage], OpenGl_RT_TileSamplesImage); |
66d1cdc6 |
2921 | myRaytraceProgram->SetUniform (theGlContext, myUniformLocations[0][OpenGl_RT_uOffsetImage], OpenGl_RT_TileOffsetsImage); |
2922 | myRaytraceProgram->SetUniform (theGlContext, myUniformLocations[0][OpenGl_RT_uTileSize], myTileSampler.TileSize()); |
3a9b5dc8 |
2923 | } |
2924 | |
66d1cdc6 |
2925 | const Handle(OpenGl_FrameBuffer)& aRenderImageFramebuffer = myAccumFrames % 2 ? myRaytraceFBO1[aFBOIdx] : myRaytraceFBO2[aFBOIdx]; |
2926 | aRenderImageFramebuffer->BindBuffer (theGlContext); |
e084dbbc |
2927 | if (myRaytraceParameters.AdaptiveScreenSampling |
2928 | && myRaytraceParameters.AdaptiveScreenSamplingAtomic) |
4eaaf9d8 |
2929 | { |
66d1cdc6 |
2930 | // extend viewport here, so that tiles at boundaries (cut tile size by target rendering viewport) |
2931 | // redirected to inner tiles (full tile size) are drawn entirely |
2932 | const Graphic3d_Vec2i anOffsetViewport = myTileSampler.OffsetTilesViewport (myAccumFrames > 1); // shrunk offsets texture will be uploaded since 3rd frame |
2933 | glViewport (0, 0, anOffsetViewport.x(), anOffsetViewport.y()); |
4eaaf9d8 |
2934 | } |
2935 | |
3a9b5dc8 |
2936 | // Generate for the given RNG seed |
66d1cdc6 |
2937 | glDisable (GL_DEPTH_TEST); |
3a9b5dc8 |
2938 | |
e084dbbc |
2939 | // Adaptive Screen Sampling computes the same overall amount of samples per frame redraw as normal Path Tracing, |
2940 | // but distributes them unequally across pixels (grouped in tiles), so that some pixels do not receive new samples at all. |
2941 | // |
2942 | // Offsets map (redirecting currently rendered tile to another tile) allows performing Adaptive Screen Sampling in single pass, |
2943 | // but current implementation relies on atomic float operations (AdaptiveScreenSamplingAtomic) for this. |
2944 | // So that when atomic floats are not supported by GPU, multi-pass rendering is used instead. |
2945 | // |
2946 | // Single-pass rendering is more optimal due to smaller amount of draw calls, |
2947 | // memory synchronization barriers, discarding most of the fragments and bad parallelization in case of very small amount of tiles requiring more samples. |
2948 | // However, atomic operations on float values still produces different result (close, but not bit exact) making non-regression testing not robust. |
2949 | // It should be possible following single-pass rendering approach but using extra accumulation buffer and resolving pass as possible improvement. |
2950 | const int aNbPasses = myRaytraceParameters.AdaptiveScreenSampling |
2951 | && !myRaytraceParameters.AdaptiveScreenSamplingAtomic |
2952 | ? myTileSampler.MaxTileSamples() |
2953 | : 1; |
2954 | if (myAccumFrames == 0) |
2955 | { |
2956 | myRNG.SetSeed(); // start RNG from beginning |
2957 | } |
2958 | for (int aPassIter = 0; aPassIter < aNbPasses; ++aPassIter) |
2959 | { |
2960 | myRaytraceProgram->SetUniform (theGlContext, myUniformLocations[0][OpenGl_RT_uFrameRndSeed], static_cast<Standard_Integer> (myRNG.NextInt() >> 2)); |
2961 | theGlContext->core20fwd->glDrawArrays (GL_TRIANGLES, 0, 6); |
2962 | if (myRaytraceParameters.AdaptiveScreenSampling) |
2963 | { |
2964 | #if !defined(GL_ES_VERSION_2_0) |
2965 | theGlContext->core44->glMemoryBarrier (GL_SHADER_IMAGE_ACCESS_BARRIER_BIT); |
2966 | #endif |
2967 | } |
2968 | } |
66d1cdc6 |
2969 | aRenderImageFramebuffer->UnbindBuffer (theGlContext); |
2970 | |
e084dbbc |
2971 | if (myRaytraceParameters.AdaptiveScreenSampling |
2972 | && myRaytraceParameters.AdaptiveScreenSamplingAtomic) |
4eaaf9d8 |
2973 | { |
66d1cdc6 |
2974 | glViewport (0, 0, theSizeX, theSizeY); |
4eaaf9d8 |
2975 | } |
66d1cdc6 |
2976 | return true; |
2977 | } |
4eaaf9d8 |
2978 | |
66d1cdc6 |
2979 | // ======================================================================= |
2980 | // function : runPathtraceOut |
2981 | // purpose : |
2982 | // ======================================================================= |
2983 | Standard_Boolean OpenGl_View::runPathtraceOut (const Graphic3d_Camera::Projection theProjection, |
2984 | OpenGl_FrameBuffer* theReadDrawFbo, |
2985 | const Handle(OpenGl_Context)& theGlContext) |
2986 | { |
3a9b5dc8 |
2987 | // Output accumulated path traced image |
2988 | theGlContext->BindProgram (myOutImageProgram); |
2989 | |
66d1cdc6 |
2990 | // Choose proper set of frame buffers for stereo rendering |
2991 | const Standard_Integer aFBOIdx = (theProjection == Graphic3d_Camera::Projection_MonoRightEye) ? 1 : 0; |
2992 | |
3a9b5dc8 |
2993 | if (myRaytraceParameters.AdaptiveScreenSampling) |
2994 | { |
2995 | // Set uniforms for display program |
66d1cdc6 |
2996 | myOutImageProgram->SetUniform (theGlContext, "uRenderImage", OpenGl_RT_OutputImage); |
3a9b5dc8 |
2997 | myOutImageProgram->SetUniform (theGlContext, "uAccumFrames", myAccumFrames); |
66d1cdc6 |
2998 | myOutImageProgram->SetUniform (theGlContext, "uVarianceImage", OpenGl_RT_VisualErrorImage); |
3a9b5dc8 |
2999 | myOutImageProgram->SetUniform (theGlContext, "uDebugAdaptive", myRenderParams.ShowSamplingTiles ? 1 : 0); |
66d1cdc6 |
3000 | myOutImageProgram->SetUniform (theGlContext, "uTileSize", myTileSampler.TileSize()); |
3001 | myOutImageProgram->SetUniform (theGlContext, "uVarianceScaleFactor", myTileSampler.VarianceScaleFactor()); |
3a9b5dc8 |
3002 | } |
3003 | |
eb85ed36 |
3004 | if (myRaytraceParameters.GlobalIllumination) |
3005 | { |
3006 | myOutImageProgram->SetUniform(theGlContext, "uExposure", myRenderParams.Exposure); |
3007 | switch (myRaytraceParameters.ToneMappingMethod) |
3008 | { |
3009 | case Graphic3d_ToneMappingMethod_Disabled: |
3010 | break; |
3011 | case Graphic3d_ToneMappingMethod_Filmic: |
3012 | myOutImageProgram->SetUniform (theGlContext, "uWhitePoint", myRenderParams.WhitePoint); |
3013 | break; |
3014 | } |
3015 | } |
3016 | |
3a9b5dc8 |
3017 | if (theReadDrawFbo != NULL) |
3018 | { |
3019 | theReadDrawFbo->BindBuffer (theGlContext); |
3020 | } |
3a9b5dc8 |
3021 | |
66d1cdc6 |
3022 | const Handle(OpenGl_FrameBuffer)& aRenderImageFramebuffer = myAccumFrames % 2 ? myRaytraceFBO1[aFBOIdx] : myRaytraceFBO2[aFBOIdx]; |
cc8cbabe |
3023 | aRenderImageFramebuffer->ColorTexture()->Bind (theGlContext, OpenGl_RT_PrevAccumTexture); |
3a9b5dc8 |
3024 | |
3a9b5dc8 |
3025 | // Copy accumulated image with correct depth values |
66d1cdc6 |
3026 | glEnable (GL_DEPTH_TEST); |
3a9b5dc8 |
3027 | theGlContext->core20fwd->glDrawArrays (GL_TRIANGLES, 0, 6); |
3028 | |
cc8cbabe |
3029 | aRenderImageFramebuffer->ColorTexture()->Unbind (theGlContext, OpenGl_RT_PrevAccumTexture); |
3a9b5dc8 |
3030 | |
3031 | if (myRaytraceParameters.AdaptiveScreenSampling) |
3032 | { |
66d1cdc6 |
3033 | // Download visual error map from the GPU and build adjusted tile offsets for optimal image sampling |
3034 | myTileSampler.GrabVarianceMap (theGlContext, myRaytraceVisualErrorTexture[aFBOIdx]); |
e084dbbc |
3035 | if (myRaytraceParameters.AdaptiveScreenSamplingAtomic) |
3036 | { |
3037 | myTileSampler.UploadOffsets (theGlContext, myRaytraceTileOffsetsTexture[aFBOIdx], myAccumFrames != 0); |
3038 | } |
3039 | else |
3040 | { |
3041 | myTileSampler.UploadSamples (theGlContext, myRaytraceTileSamplesTexture[aFBOIdx], myAccumFrames != 0); |
3042 | } |
3a9b5dc8 |
3043 | } |
3044 | |
3045 | unbindRaytraceTextures (theGlContext); |
3a9b5dc8 |
3046 | theGlContext->BindProgram (NULL); |
66d1cdc6 |
3047 | return true; |
3a9b5dc8 |
3048 | } |
3049 | |
e276548b |
3050 | // ======================================================================= |
189f85a3 |
3051 | // function : raytrace |
fc73a202 |
3052 | // purpose : Redraws the window using OpenGL/GLSL ray-tracing |
e276548b |
3053 | // ======================================================================= |
c357e426 |
3054 | Standard_Boolean OpenGl_View::raytrace (const Standard_Integer theSizeX, |
91c60b57 |
3055 | const Standard_Integer theSizeY, |
bf02aa7d |
3056 | Graphic3d_Camera::Projection theProjection, |
38a0206f |
3057 | OpenGl_FrameBuffer* theReadDrawFbo, |
91c60b57 |
3058 | const Handle(OpenGl_Context)& theGlContext) |
e276548b |
3059 | { |
66d1cdc6 |
3060 | if (!initRaytraceResources (theSizeX, theSizeY, theGlContext)) |
91c60b57 |
3061 | { |
e276548b |
3062 | return Standard_False; |
91c60b57 |
3063 | } |
3064 | |
bf02aa7d |
3065 | if (!updateRaytraceBuffers (theSizeX, theSizeY, theGlContext)) |
91c60b57 |
3066 | { |
3067 | return Standard_False; |
3068 | } |
e276548b |
3069 | |
3a9b5dc8 |
3070 | OpenGl_Mat4 aLightSourceMatrix; |
e276548b |
3071 | |
3a9b5dc8 |
3072 | // Get inversed model-view matrix for transforming lights |
3073 | myCamera->OrientationMatrixF().Inverted (aLightSourceMatrix); |
e276548b |
3074 | |
3a9b5dc8 |
3075 | if (!updateRaytraceLightSources (aLightSourceMatrix, theGlContext)) |
a89742cf |
3076 | { |
3a9b5dc8 |
3077 | return Standard_False; |
a89742cf |
3078 | } |
3079 | |
3a9b5dc8 |
3080 | // Generate image using Whitted-style ray-tracing or path tracing |
e276548b |
3081 | if (myIsRaytraceDataValid) |
3082 | { |
189f85a3 |
3083 | myRaytraceScreenQuad.BindVertexAttrib (theGlContext, Graphic3d_TOA_POS); |
fc73a202 |
3084 | |
91c60b57 |
3085 | if (!myRaytraceGeometry.AcquireTextures (theGlContext)) |
25ef750e |
3086 | { |
3b523c4c |
3087 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_ERROR, |
3088 | 0, GL_DEBUG_SEVERITY_MEDIUM, "Error: Failed to acquire OpenGL image textures"); |
25ef750e |
3089 | } |
3090 | |
1d865689 |
3091 | glDisable (GL_BLEND); |
3a9b5dc8 |
3092 | |
3093 | const Standard_Boolean aResult = runRaytraceShaders (theSizeX, |
3094 | theSizeY, |
3095 | theProjection, |
3096 | theReadDrawFbo, |
3097 | theGlContext); |
1d865689 |
3098 | |
91c60b57 |
3099 | if (!aResult) |
25ef750e |
3100 | { |
3b523c4c |
3101 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_ERROR, |
3102 | 0, GL_DEBUG_SEVERITY_MEDIUM, "Error: Failed to execute ray-tracing shaders"); |
91c60b57 |
3103 | } |
25ef750e |
3104 | |
91c60b57 |
3105 | if (!myRaytraceGeometry.ReleaseTextures (theGlContext)) |
3106 | { |
3b523c4c |
3107 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_ERROR, |
3108 | 0, GL_DEBUG_SEVERITY_MEDIUM, "Error: Failed to release OpenGL image textures"); |
25ef750e |
3109 | } |
3110 | |
189f85a3 |
3111 | myRaytraceScreenQuad.UnbindVertexAttrib (theGlContext, Graphic3d_TOA_POS); |
e276548b |
3112 | } |
3113 | |
e276548b |
3114 | return Standard_True; |
f8ae3605 |
3115 | } |