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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 | |
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16 | #include <Graphic3d_TextureParams.hxx> |
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17 | |
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18 | #include <OpenGl_FrameBuffer.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_View.hxx> |
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22 | |
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23 | #include <OSD_Protection.hxx> |
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24 | #include <OSD_File.hxx> |
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25 | |
26 | using namespace OpenGl_Raytrace; |
27 | |
28 | //! Use this macro to output ray-tracing debug info |
fc73a202 |
29 | // #define RAY_TRACE_PRINT_INFO |
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30 | |
31 | #ifdef RAY_TRACE_PRINT_INFO |
32 | #include <OSD_Timer.hxx> |
33 | #endif |
34 | |
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35 | // ======================================================================= |
189f85a3 |
36 | // function : updateRaytraceGeometry |
91c60b57 |
37 | // purpose : Updates 3D scene geometry for ray-tracing |
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38 | // ======================================================================= |
91c60b57 |
39 | Standard_Boolean OpenGl_View::updateRaytraceGeometry (const RaytraceUpdateMode theMode, |
40 | const Standard_Integer theViewId, |
41 | const Handle(OpenGl_Context)& theGlContext) |
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42 | { |
91c60b57 |
43 | // In 'check' mode (OpenGl_GUM_CHECK) the scene geometry is analyzed for |
44 | // modifications. This is light-weight procedure performed on each frame |
84c71f29 |
45 | if (theMode == OpenGl_GUM_CHECK) |
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46 | { |
189f85a3 |
47 | if (myLayerListState != myZLayers.ModificationState()) |
91c60b57 |
48 | { |
49 | return updateRaytraceGeometry (OpenGl_GUM_PREPARE, theViewId, theGlContext); |
50 | } |
51 | } |
84c71f29 |
52 | else if (theMode == OpenGl_GUM_PREPARE) |
53 | { |
54 | myRaytraceGeometry.ClearMaterials(); |
91c60b57 |
55 | |
84c71f29 |
56 | myArrayToTrianglesMap.clear(); |
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57 | |
58 | myIsRaytraceDataValid = Standard_False; |
59 | } |
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60 | |
61 | // The set of processed structures (reflected to ray-tracing) |
62 | // This set is used to remove out-of-date records from the |
63 | // hash map of structures |
64 | std::set<const OpenGl_Structure*> anElements; |
65 | |
91c60b57 |
66 | // Set to store all currently visible OpenGL primitive arrays |
67 | // applicable for ray-tracing |
8d3f219f |
68 | std::set<Standard_Size> anArrayIDs; |
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69 | |
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70 | // Set to store all non-raytracable elements allowing tracking |
71 | // of changes in OpenGL scene (only for path tracing) |
72 | std::set<Standard_Integer> aNonRaytraceIDs; |
73 | |
91c60b57 |
74 | const OpenGl_Layer& aLayer = myZLayers.Layer (Graphic3d_ZLayerId_Default); |
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75 | |
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76 | if (aLayer.NbStructures() != 0) |
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77 | { |
9f112210 |
78 | const OpenGl_ArrayOfIndexedMapOfStructure& aStructArray = aLayer.ArrayOfStructures(); |
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79 | |
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80 | for (Standard_Integer anIndex = 0; anIndex < aStructArray.Length(); ++anIndex) |
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81 | { |
9f112210 |
82 | for (OpenGl_IndexedMapOfStructure::Iterator aStructIt (aStructArray (anIndex)); aStructIt.More(); aStructIt.Next()) |
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83 | { |
84 | const OpenGl_Structure* aStructure = aStructIt.Value(); |
85 | |
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86 | if (theMode == OpenGl_GUM_CHECK) |
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87 | { |
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88 | if (toUpdateStructure (aStructure)) |
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89 | { |
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90 | return updateRaytraceGeometry (OpenGl_GUM_PREPARE, theViewId, theGlContext); |
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91 | } |
189f85a3 |
92 | else if (aStructure->IsVisible() && myRaytraceParameters.GlobalIllumination) |
93 | { |
94 | aNonRaytraceIDs.insert (aStructure->highlight ? aStructure->Id : -aStructure->Id); |
95 | } |
e2da917a |
96 | } |
84c71f29 |
97 | else if (theMode == OpenGl_GUM_PREPARE) |
98 | { |
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99 | if (!aStructure->IsRaytracable() || !aStructure->IsVisible()) |
a1954302 |
100 | { |
a272ed94 |
101 | continue; |
102 | } |
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103 | else if (!aStructure->ViewAffinity.IsNull() && !aStructure->ViewAffinity->IsVisible (theViewId)) |
a272ed94 |
104 | { |
84c71f29 |
105 | continue; |
a1954302 |
106 | } |
84c71f29 |
107 | |
108 | for (OpenGl_Structure::GroupIterator aGroupIter (aStructure->DrawGroups()); aGroupIter.More(); aGroupIter.Next()) |
109 | { |
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110 | // Extract OpenGL elements from the group (primitives arrays) |
84c71f29 |
111 | for (const OpenGl_ElementNode* aNode = aGroupIter.Value()->FirstNode(); aNode != NULL; aNode = aNode->next) |
112 | { |
113 | OpenGl_PrimitiveArray* aPrimArray = dynamic_cast<OpenGl_PrimitiveArray*> (aNode->elem); |
114 | |
115 | if (aPrimArray != NULL) |
116 | { |
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117 | anArrayIDs.insert (aPrimArray->GetUID()); |
84c71f29 |
118 | } |
119 | } |
120 | } |
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121 | } |
91c60b57 |
122 | else if (theMode == OpenGl_GUM_REBUILD) |
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123 | { |
124 | if (!aStructure->IsRaytracable()) |
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125 | { |
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126 | continue; |
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127 | } |
128 | else if (addRaytraceStructure (aStructure, theGlContext)) |
129 | { |
130 | anElements.insert (aStructure); // structure was processed |
131 | } |
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132 | } |
133 | } |
134 | } |
135 | } |
136 | |
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137 | if (theMode == OpenGl_GUM_PREPARE) |
138 | { |
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139 | BVH_ObjectSet<Standard_ShortReal, 3>::BVH_ObjectList anUnchangedObjects; |
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140 | |
91c60b57 |
141 | // Filter out unchanged objects so only their transformations and materials |
142 | // will be updated (and newly added objects will be processed from scratch) |
143 | for (Standard_Integer anObjIdx = 0; anObjIdx < myRaytraceGeometry.Size(); ++anObjIdx) |
84c71f29 |
144 | { |
145 | OpenGl_TriangleSet* aTriangleSet = dynamic_cast<OpenGl_TriangleSet*> ( |
91c60b57 |
146 | myRaytraceGeometry.Objects().ChangeValue (anObjIdx).operator->()); |
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147 | |
91c60b57 |
148 | if (aTriangleSet == NULL) |
84c71f29 |
149 | { |
91c60b57 |
150 | continue; |
151 | } |
152 | |
153 | if (anArrayIDs.find (aTriangleSet->AssociatedPArrayID()) != anArrayIDs.end()) |
154 | { |
155 | anUnchangedObjects.Append (myRaytraceGeometry.Objects().Value (anObjIdx)); |
84c71f29 |
156 | |
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157 | myArrayToTrianglesMap[aTriangleSet->AssociatedPArrayID()] = aTriangleSet; |
84c71f29 |
158 | } |
159 | } |
160 | |
161 | myRaytraceGeometry.Objects() = anUnchangedObjects; |
162 | |
91c60b57 |
163 | return updateRaytraceGeometry (OpenGl_GUM_REBUILD, theViewId, theGlContext); |
84c71f29 |
164 | } |
91c60b57 |
165 | else if (theMode == OpenGl_GUM_REBUILD) |
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166 | { |
91c60b57 |
167 | // Actualize the hash map of structures - remove out-of-date records |
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168 | std::map<const OpenGl_Structure*, StructState>::iterator anIter = myStructureStates.begin(); |
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169 | |
170 | while (anIter != myStructureStates.end()) |
171 | { |
172 | if (anElements.find (anIter->first) == anElements.end()) |
173 | { |
174 | myStructureStates.erase (anIter++); |
175 | } |
176 | else |
177 | { |
178 | ++anIter; |
179 | } |
180 | } |
181 | |
182 | // Actualize OpenGL layer list state |
189f85a3 |
183 | myLayerListState = myZLayers.ModificationState(); |
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184 | |
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185 | // Rebuild two-level acceleration structure |
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186 | myRaytraceGeometry.ProcessAcceleration(); |
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187 | |
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188 | myRaytraceSceneRadius = 2.f /* scale factor */ * std::max ( |
189 | myRaytraceGeometry.Box().CornerMin().cwiseAbs().maxComp(), |
190 | myRaytraceGeometry.Box().CornerMax().cwiseAbs().maxComp()); |
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191 | |
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192 | const BVH_Vec3f aSize = myRaytraceGeometry.Box().Size(); |
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193 | |
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194 | myRaytraceSceneEpsilon = Max (1.0e-6f, 1.0e-4f * aSize.Modulus()); |
fc73a202 |
195 | |
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196 | return uploadRaytraceData (theGlContext); |
e276548b |
197 | } |
198 | |
189f85a3 |
199 | if (myRaytraceParameters.GlobalIllumination) |
200 | { |
201 | Standard_Boolean toRestart = |
202 | aNonRaytraceIDs.size() != myNonRaytraceStructureIDs.size(); |
203 | |
204 | for (std::set<Standard_Integer>::iterator anID = aNonRaytraceIDs.begin(); anID != aNonRaytraceIDs.end() && !toRestart; ++anID) |
205 | { |
206 | if (myNonRaytraceStructureIDs.find (*anID) == myNonRaytraceStructureIDs.end()) |
207 | { |
208 | toRestart = Standard_True; |
209 | } |
210 | } |
211 | |
212 | if (toRestart) |
213 | myAccumFrames = 0; |
214 | |
215 | myNonRaytraceStructureIDs = aNonRaytraceIDs; |
216 | } |
217 | |
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218 | return Standard_True; |
219 | } |
220 | |
221 | // ======================================================================= |
189f85a3 |
222 | // function : toUpdateStructure |
e2da917a |
223 | // purpose : Checks to see if the structure is modified |
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224 | // ======================================================================= |
91c60b57 |
225 | Standard_Boolean OpenGl_View::toUpdateStructure (const OpenGl_Structure* theStructure) |
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226 | { |
227 | if (!theStructure->IsRaytracable()) |
228 | { |
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229 | if (theStructure->ModificationState() > 0) |
230 | { |
231 | theStructure->ResetModificationState(); |
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232 | |
233 | return Standard_True; // ray-trace element was removed - need to rebuild |
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234 | } |
235 | |
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236 | return Standard_False; // did not contain ray-trace elements |
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237 | } |
238 | |
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239 | std::map<const OpenGl_Structure*, StructState>::iterator aStructState = myStructureStates.find (theStructure); |
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240 | |
d4aaad5b |
241 | if (aStructState == myStructureStates.end() || aStructState->second.StructureState != theStructure->ModificationState()) |
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242 | { |
d4aaad5b |
243 | return Standard_True; |
244 | } |
245 | else if (theStructure->InstancedStructure() != NULL) |
246 | { |
247 | return aStructState->second.InstancedState != theStructure->InstancedStructure()->ModificationState(); |
91c60b57 |
248 | } |
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249 | |
d4aaad5b |
250 | return Standard_False; |
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251 | } |
252 | |
25ef750e |
253 | // ======================================================================= |
189f85a3 |
254 | // function : buildTextureTransform |
25ef750e |
255 | // purpose : Constructs texture transformation matrix |
256 | // ======================================================================= |
189f85a3 |
257 | void buildTextureTransform (const Handle(Graphic3d_TextureParams)& theParams, BVH_Mat4f& theMatrix) |
25ef750e |
258 | { |
259 | theMatrix.InitIdentity(); |
260 | |
261 | // Apply scaling |
262 | const Graphic3d_Vec2& aScale = theParams->Scale(); |
263 | |
264 | theMatrix.ChangeValue (0, 0) *= aScale.x(); |
265 | theMatrix.ChangeValue (1, 0) *= aScale.x(); |
266 | theMatrix.ChangeValue (2, 0) *= aScale.x(); |
267 | theMatrix.ChangeValue (3, 0) *= aScale.x(); |
268 | |
269 | theMatrix.ChangeValue (0, 1) *= aScale.y(); |
270 | theMatrix.ChangeValue (1, 1) *= aScale.y(); |
271 | theMatrix.ChangeValue (2, 1) *= aScale.y(); |
272 | theMatrix.ChangeValue (3, 1) *= aScale.y(); |
273 | |
274 | // Apply translation |
275 | const Graphic3d_Vec2 aTrans = -theParams->Translation(); |
276 | |
277 | theMatrix.ChangeValue (0, 3) = theMatrix.GetValue (0, 0) * aTrans.x() + |
278 | theMatrix.GetValue (0, 1) * aTrans.y(); |
279 | |
280 | theMatrix.ChangeValue (1, 3) = theMatrix.GetValue (1, 0) * aTrans.x() + |
281 | theMatrix.GetValue (1, 1) * aTrans.y(); |
282 | |
283 | theMatrix.ChangeValue (2, 3) = theMatrix.GetValue (2, 0) * aTrans.x() + |
284 | theMatrix.GetValue (2, 1) * aTrans.y(); |
285 | |
286 | // Apply rotation |
287 | const Standard_ShortReal aSin = std::sin ( |
288 | -theParams->Rotation() * static_cast<Standard_ShortReal> (M_PI / 180.0)); |
289 | const Standard_ShortReal aCos = std::cos ( |
290 | -theParams->Rotation() * static_cast<Standard_ShortReal> (M_PI / 180.0)); |
291 | |
292 | BVH_Mat4f aRotationMat; |
293 | aRotationMat.SetValue (0, 0, aCos); |
294 | aRotationMat.SetValue (1, 1, aCos); |
295 | aRotationMat.SetValue (0, 1, -aSin); |
296 | aRotationMat.SetValue (1, 0, aSin); |
297 | |
298 | theMatrix = theMatrix * aRotationMat; |
299 | } |
300 | |
e276548b |
301 | // ======================================================================= |
189f85a3 |
302 | // function : convertMaterial |
e276548b |
303 | // purpose : Creates ray-tracing material properties |
304 | // ======================================================================= |
91c60b57 |
305 | OpenGl_RaytraceMaterial OpenGl_View::convertMaterial (const OpenGl_AspectFace* theAspect, |
306 | const Handle(OpenGl_Context)& theGlContext) |
e276548b |
307 | { |
91c60b57 |
308 | OpenGl_RaytraceMaterial theMaterial; |
25ef750e |
309 | |
91c60b57 |
310 | const OPENGL_SURF_PROP& aProperties = theAspect->IntFront(); |
25ef750e |
311 | |
91c60b57 |
312 | theMaterial.Ambient = BVH_Vec4f ( |
313 | (aProperties.isphysic ? aProperties.ambcol.rgb[0] : aProperties.matcol.rgb[0]) * aProperties.amb, |
314 | (aProperties.isphysic ? aProperties.ambcol.rgb[1] : aProperties.matcol.rgb[1]) * aProperties.amb, |
315 | (aProperties.isphysic ? aProperties.ambcol.rgb[2] : aProperties.matcol.rgb[2]) * aProperties.amb, |
316 | 1.f); |
25ef750e |
317 | |
91c60b57 |
318 | theMaterial.Diffuse = BVH_Vec4f ( |
319 | (aProperties.isphysic ? aProperties.difcol.rgb[0] : aProperties.matcol.rgb[0]) * aProperties.diff, |
320 | (aProperties.isphysic ? aProperties.difcol.rgb[1] : aProperties.matcol.rgb[1]) * aProperties.diff, |
321 | (aProperties.isphysic ? aProperties.difcol.rgb[2] : aProperties.matcol.rgb[2]) * aProperties.diff, |
322 | -1.f /* no texture */); |
25ef750e |
323 | |
324 | theMaterial.Specular = BVH_Vec4f ( |
325 | (aProperties.isphysic ? aProperties.speccol.rgb[0] : 1.f) * aProperties.spec, |
326 | (aProperties.isphysic ? aProperties.speccol.rgb[1] : 1.f) * aProperties.spec, |
327 | (aProperties.isphysic ? aProperties.speccol.rgb[2] : 1.f) * aProperties.spec, |
328 | aProperties.shine); |
329 | |
91c60b57 |
330 | theMaterial.Emission = BVH_Vec4f ( |
331 | (aProperties.isphysic ? aProperties.emscol.rgb[0] : aProperties.matcol.rgb[0]) * aProperties.emsv, |
332 | (aProperties.isphysic ? aProperties.emscol.rgb[1] : aProperties.matcol.rgb[1]) * aProperties.emsv, |
333 | (aProperties.isphysic ? aProperties.emscol.rgb[2] : aProperties.matcol.rgb[2]) * aProperties.emsv, |
334 | 1.f); |
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335 | |
91c60b57 |
336 | theMaterial.Transparency = BVH_Vec4f (aProperties.trans, |
25ef750e |
337 | 1.f - aProperties.trans, |
338 | aProperties.index == 0 ? 1.f : aProperties.index, |
339 | aProperties.index == 0 ? 1.f : 1.f / aProperties.index); |
e276548b |
340 | |
25ef750e |
341 | const Standard_ShortReal aMaxRefl = Max (theMaterial.Diffuse.x() + theMaterial.Specular.x(), |
342 | Max (theMaterial.Diffuse.y() + theMaterial.Specular.y(), |
343 | theMaterial.Diffuse.z() + theMaterial.Specular.z())); |
e276548b |
344 | |
25ef750e |
345 | const Standard_ShortReal aReflectionScale = 0.75f / aMaxRefl; |
346 | |
347 | theMaterial.Reflection = BVH_Vec4f ( |
348 | aProperties.speccol.rgb[0] * aProperties.spec * aReflectionScale, |
349 | aProperties.speccol.rgb[1] * aProperties.spec * aReflectionScale, |
350 | aProperties.speccol.rgb[2] * aProperties.spec * aReflectionScale, |
351 | 0.f); |
352 | |
189f85a3 |
353 | // Serialize physically-based material properties |
354 | const Graphic3d_BSDF& aBSDF = aProperties.BSDF; |
355 | |
356 | theMaterial.BSDF.Le = BVH_Vec4f (aBSDF.Le, 0.f); |
357 | theMaterial.BSDF.Kd = BVH_Vec4f (aBSDF.Kd, -1.f /* no tex */); |
358 | theMaterial.BSDF.Kr = BVH_Vec4f (aBSDF.Kr, 0.f); |
359 | theMaterial.BSDF.Kt = BVH_Vec4f (aBSDF.Kt, 0.f); |
360 | theMaterial.BSDF.Ks = BVH_Vec4f (aBSDF.Ks, aBSDF.Roughness); |
361 | |
362 | theMaterial.BSDF.Fresnel = aBSDF.Fresnel.Serialize(); |
363 | |
364 | theMaterial.BSDF.Absorption = BVH_Vec4f (aBSDF.AbsorptionColor, |
365 | aBSDF.AbsorptionCoeff); |
366 | |
367 | // Handle material textures |
25ef750e |
368 | if (theAspect->DoTextureMap()) |
369 | { |
91c60b57 |
370 | if (theGlContext->arbTexBindless != NULL) |
25ef750e |
371 | { |
189f85a3 |
372 | buildTextureTransform (theAspect->TextureParams(), theMaterial.TextureTransform); |
91c60b57 |
373 | |
189f85a3 |
374 | // write texture ID to diffuse w-component |
375 | theMaterial.Diffuse.w() = theMaterial.BSDF.Kd.w() = |
376 | static_cast<Standard_ShortReal> (myRaytraceGeometry.AddTexture (theAspect->TextureRes (theGlContext))); |
25ef750e |
377 | } |
378 | else if (!myIsRaytraceWarnTextures) |
379 | { |
91c60b57 |
380 | const TCollection_ExtendedString aWarnMessage = |
381 | "Warning: texturing in Ray-Trace requires GL_ARB_bindless_texture extension which is missing. " |
382 | "Please try to update graphics card driver. At the moment textures will be ignored."; |
383 | |
384 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION_ARB, |
385 | GL_DEBUG_TYPE_PORTABILITY_ARB, 0, GL_DEBUG_SEVERITY_HIGH_ARB, aWarnMessage); |
386 | |
25ef750e |
387 | myIsRaytraceWarnTextures = Standard_True; |
388 | } |
389 | } |
e276548b |
390 | |
91c60b57 |
391 | return theMaterial; |
e276548b |
392 | } |
393 | |
394 | // ======================================================================= |
189f85a3 |
395 | // function : addRaytraceStructure |
e276548b |
396 | // purpose : Adds OpenGL structure to ray-traced scene geometry |
397 | // ======================================================================= |
91c60b57 |
398 | Standard_Boolean OpenGl_View::addRaytraceStructure (const OpenGl_Structure* theStructure, |
399 | const Handle(OpenGl_Context)& theGlContext) |
e276548b |
400 | { |
e276548b |
401 | if (!theStructure->IsVisible()) |
402 | { |
d4aaad5b |
403 | myStructureStates[theStructure] = StructState (theStructure); |
91c60b57 |
404 | |
e276548b |
405 | return Standard_True; |
406 | } |
407 | |
408 | // Get structure material |
68333c8f |
409 | Standard_Integer aStructMatID = -1; |
e276548b |
410 | |
411 | if (theStructure->AspectFace() != NULL) |
412 | { |
265d4508 |
413 | aStructMatID = static_cast<Standard_Integer> (myRaytraceGeometry.Materials.size()); |
e276548b |
414 | |
91c60b57 |
415 | OpenGl_RaytraceMaterial aStructMaterial = convertMaterial (theStructure->AspectFace(), theGlContext); |
e276548b |
416 | |
265d4508 |
417 | myRaytraceGeometry.Materials.push_back (aStructMaterial); |
e276548b |
418 | } |
419 | |
91c60b57 |
420 | Standard_ShortReal aStructTransform[16]; |
421 | |
0717ddc1 |
422 | if (theStructure->Transformation()->mat != NULL) |
423 | { |
0717ddc1 |
424 | for (Standard_Integer i = 0; i < 4; ++i) |
425 | { |
426 | for (Standard_Integer j = 0; j < 4; ++j) |
427 | { |
428 | aStructTransform[j * 4 + i] = theStructure->Transformation()->mat[i][j]; |
429 | } |
430 | } |
431 | } |
432 | |
91c60b57 |
433 | Standard_Boolean aResult = addRaytraceGroups (theStructure, aStructMatID, |
434 | theStructure->Transformation()->mat ? aStructTransform : NULL, theGlContext); |
0717ddc1 |
435 | |
436 | // Process all connected OpenGL structures |
d4aaad5b |
437 | const OpenGl_Structure* anInstanced = theStructure->InstancedStructure(); |
438 | |
439 | if (anInstanced != NULL && anInstanced->IsRaytracable()) |
0717ddc1 |
440 | { |
d4aaad5b |
441 | aResult &= addRaytraceGroups (anInstanced, aStructMatID, |
442 | theStructure->Transformation()->mat ? aStructTransform : NULL, theGlContext); |
0717ddc1 |
443 | } |
444 | |
d4aaad5b |
445 | myStructureStates[theStructure] = StructState (theStructure); |
91c60b57 |
446 | |
447 | return aResult; |
0717ddc1 |
448 | } |
449 | |
450 | // ======================================================================= |
189f85a3 |
451 | // function : addRaytraceGroups |
0717ddc1 |
452 | // purpose : Adds OpenGL groups to ray-traced scene geometry |
453 | // ======================================================================= |
91c60b57 |
454 | Standard_Boolean OpenGl_View::addRaytraceGroups (const OpenGl_Structure* theStructure, |
455 | const Standard_Integer theStructMat, |
456 | const Standard_ShortReal* theTransform, |
457 | const Handle(OpenGl_Context)& theGlContext) |
0717ddc1 |
458 | { |
b64d84be |
459 | for (OpenGl_Structure::GroupIterator aGroupIter (theStructure->DrawGroups()); aGroupIter.More(); aGroupIter.Next()) |
e276548b |
460 | { |
461 | // Get group material |
68333c8f |
462 | Standard_Integer aGroupMatID = -1; |
b64d84be |
463 | if (aGroupIter.Value()->AspectFace() != NULL) |
e276548b |
464 | { |
265d4508 |
465 | aGroupMatID = static_cast<Standard_Integer> (myRaytraceGeometry.Materials.size()); |
e276548b |
466 | |
91c60b57 |
467 | OpenGl_RaytraceMaterial aGroupMaterial = convertMaterial ( |
468 | aGroupIter.Value()->AspectFace(), theGlContext); |
e276548b |
469 | |
265d4508 |
470 | myRaytraceGeometry.Materials.push_back (aGroupMaterial); |
e276548b |
471 | } |
472 | |
91c60b57 |
473 | Standard_Integer aMatID = aGroupMatID < 0 ? theStructMat : aGroupMatID; |
265d4508 |
474 | if (aMatID < 0) |
e276548b |
475 | { |
265d4508 |
476 | aMatID = static_cast<Standard_Integer> (myRaytraceGeometry.Materials.size()); |
e276548b |
477 | |
265d4508 |
478 | myRaytraceGeometry.Materials.push_back (OpenGl_RaytraceMaterial()); |
e276548b |
479 | } |
480 | |
265d4508 |
481 | // Add OpenGL elements from group (extract primitives arrays and aspects) |
b64d84be |
482 | for (const OpenGl_ElementNode* aNode = aGroupIter.Value()->FirstNode(); aNode != NULL; aNode = aNode->next) |
e276548b |
483 | { |
5322131b |
484 | OpenGl_AspectFace* anAspect = dynamic_cast<OpenGl_AspectFace*> (aNode->elem); |
91c60b57 |
485 | |
5322131b |
486 | if (anAspect != NULL) |
e276548b |
487 | { |
5322131b |
488 | aMatID = static_cast<Standard_Integer> (myRaytraceGeometry.Materials.size()); |
e276548b |
489 | |
91c60b57 |
490 | OpenGl_RaytraceMaterial aMaterial = convertMaterial (anAspect, theGlContext); |
e276548b |
491 | |
5322131b |
492 | myRaytraceGeometry.Materials.push_back (aMaterial); |
e276548b |
493 | } |
5322131b |
494 | else |
e276548b |
495 | { |
496 | OpenGl_PrimitiveArray* aPrimArray = dynamic_cast<OpenGl_PrimitiveArray*> (aNode->elem); |
84c71f29 |
497 | |
e276548b |
498 | if (aPrimArray != NULL) |
499 | { |
8d3f219f |
500 | std::map<Standard_Size, OpenGl_TriangleSet*>::iterator aSetIter = myArrayToTrianglesMap.find (aPrimArray->GetUID()); |
501 | |
84c71f29 |
502 | if (aSetIter != myArrayToTrianglesMap.end()) |
503 | { |
504 | OpenGl_TriangleSet* aSet = aSetIter->second; |
25ef750e |
505 | |
84c71f29 |
506 | BVH_Transform<Standard_ShortReal, 4>* aTransform = new BVH_Transform<Standard_ShortReal, 4>(); |
507 | |
508 | if (theTransform != NULL) |
509 | { |
510 | aTransform->SetTransform (*(reinterpret_cast<const BVH_Mat4f*> (theTransform))); |
511 | } |
91c60b57 |
512 | |
84c71f29 |
513 | aSet->SetProperties (aTransform); |
514 | |
25ef750e |
515 | if (aSet->MaterialIndex() != OpenGl_TriangleSet::INVALID_MATERIAL && aSet->MaterialIndex() != aMatID) |
84c71f29 |
516 | { |
517 | aSet->SetMaterialIndex (aMatID); |
518 | } |
519 | } |
520 | else |
521 | { |
25ef750e |
522 | NCollection_Handle<BVH_Object<Standard_ShortReal, 3> > aSet = |
91c60b57 |
523 | addRaytracePrimitiveArray (aPrimArray, aMatID, 0); |
265d4508 |
524 | |
84c71f29 |
525 | if (!aSet.IsNull()) |
526 | { |
527 | BVH_Transform<Standard_ShortReal, 4>* aTransform = new BVH_Transform<Standard_ShortReal, 4>; |
528 | |
529 | if (theTransform != NULL) |
530 | { |
531 | aTransform->SetTransform (*(reinterpret_cast<const BVH_Mat4f*> (theTransform))); |
532 | } |
533 | |
534 | aSet->SetProperties (aTransform); |
535 | |
536 | myRaytraceGeometry.Objects().Append (aSet); |
537 | } |
538 | } |
e276548b |
539 | } |
540 | } |
541 | } |
e276548b |
542 | } |
543 | |
e276548b |
544 | return Standard_True; |
545 | } |
546 | |
547 | // ======================================================================= |
189f85a3 |
548 | // function : addRaytracePrimitiveArray |
e276548b |
549 | // purpose : Adds OpenGL primitive array to ray-traced scene geometry |
550 | // ======================================================================= |
91c60b57 |
551 | OpenGl_TriangleSet* OpenGl_View::addRaytracePrimitiveArray (const OpenGl_PrimitiveArray* theArray, |
552 | const Standard_Integer theMaterial, |
553 | const OpenGl_Mat4* theTransform) |
e276548b |
554 | { |
91c60b57 |
555 | const Handle(Graphic3d_BoundBuffer)& aBounds = theArray->Bounds(); |
871fa103 |
556 | const Handle(Graphic3d_IndexBuffer)& anIndices = theArray->Indices(); |
557 | const Handle(Graphic3d_Buffer)& anAttribs = theArray->Attributes(); |
91c60b57 |
558 | |
871fa103 |
559 | if (theArray->DrawMode() < GL_TRIANGLES |
91c60b57 |
560 | #ifndef GL_ES_VERSION_2_0 |
871fa103 |
561 | || theArray->DrawMode() > GL_POLYGON |
ca3c13d1 |
562 | #else |
563 | || theArray->DrawMode() > GL_TRIANGLE_FAN |
564 | #endif |
871fa103 |
565 | || anAttribs.IsNull()) |
e276548b |
566 | { |
265d4508 |
567 | return NULL; |
e276548b |
568 | } |
569 | |
25ef750e |
570 | OpenGl_Mat4 aNormalMatrix; |
571 | |
572 | if (theTransform != NULL) |
573 | { |
574 | Standard_ASSERT_RETURN (theTransform->Inverted (aNormalMatrix), |
575 | "Error: Failed to compute normal transformation matrix", NULL); |
576 | |
577 | aNormalMatrix.Transpose(); |
578 | } |
579 | |
8d3f219f |
580 | OpenGl_TriangleSet* aSet = new OpenGl_TriangleSet (theArray->GetUID()); |
e276548b |
581 | { |
871fa103 |
582 | aSet->Vertices.reserve (anAttribs->NbElements); |
91c60b57 |
583 | aSet->Normals.reserve (anAttribs->NbElements); |
584 | aSet->TexCrds.reserve (anAttribs->NbElements); |
25ef750e |
585 | |
871fa103 |
586 | const size_t aVertFrom = aSet->Vertices.size(); |
91c60b57 |
587 | |
871fa103 |
588 | for (Standard_Integer anAttribIter = 0; anAttribIter < anAttribs->NbAttributes; ++anAttribIter) |
265d4508 |
589 | { |
871fa103 |
590 | const Graphic3d_Attribute& anAttrib = anAttribs->Attribute (anAttribIter); |
591 | const size_t anOffset = anAttribs->AttributeOffset (anAttribIter); |
592 | if (anAttrib.Id == Graphic3d_TOA_POS) |
593 | { |
594 | if (anAttrib.DataType == Graphic3d_TOD_VEC3 |
595 | || anAttrib.DataType == Graphic3d_TOD_VEC4) |
596 | { |
597 | for (Standard_Integer aVertIter = 0; aVertIter < anAttribs->NbElements; ++aVertIter) |
598 | { |
25ef750e |
599 | aSet->Vertices.push_back ( |
91c60b57 |
600 | *reinterpret_cast<const Graphic3d_Vec3*> (anAttribs->value (aVertIter) + anOffset)); |
871fa103 |
601 | } |
602 | } |
603 | else if (anAttrib.DataType == Graphic3d_TOD_VEC2) |
604 | { |
605 | for (Standard_Integer aVertIter = 0; aVertIter < anAttribs->NbElements; ++aVertIter) |
606 | { |
91c60b57 |
607 | const Standard_ShortReal* aCoords = |
608 | reinterpret_cast<const Standard_ShortReal*> (anAttribs->value (aVertIter) + anOffset); |
609 | |
610 | aSet->Vertices.push_back (BVH_Vec3f (aCoords[0], aCoords[1], 0.0f)); |
871fa103 |
611 | } |
612 | } |
613 | } |
614 | else if (anAttrib.Id == Graphic3d_TOA_NORM) |
615 | { |
616 | if (anAttrib.DataType == Graphic3d_TOD_VEC3 |
617 | || anAttrib.DataType == Graphic3d_TOD_VEC4) |
618 | { |
619 | for (Standard_Integer aVertIter = 0; aVertIter < anAttribs->NbElements; ++aVertIter) |
620 | { |
25ef750e |
621 | aSet->Normals.push_back ( |
91c60b57 |
622 | *reinterpret_cast<const Graphic3d_Vec3*> (anAttribs->value (aVertIter) + anOffset)); |
25ef750e |
623 | } |
624 | } |
625 | } |
626 | else if (anAttrib.Id == Graphic3d_TOA_UV) |
627 | { |
628 | if (anAttrib.DataType == Graphic3d_TOD_VEC2) |
629 | { |
630 | for (Standard_Integer aVertIter = 0; aVertIter < anAttribs->NbElements; ++aVertIter) |
631 | { |
632 | aSet->TexCrds.push_back ( |
91c60b57 |
633 | *reinterpret_cast<const Graphic3d_Vec2*> (anAttribs->value (aVertIter) + anOffset)); |
871fa103 |
634 | } |
635 | } |
636 | } |
265d4508 |
637 | } |
e276548b |
638 | |
871fa103 |
639 | if (aSet->Normals.size() != aSet->Vertices.size()) |
265d4508 |
640 | { |
871fa103 |
641 | for (Standard_Integer aVertIter = 0; aVertIter < anAttribs->NbElements; ++aVertIter) |
265d4508 |
642 | { |
25ef750e |
643 | aSet->Normals.push_back (BVH_Vec3f()); |
644 | } |
645 | } |
646 | |
647 | if (aSet->TexCrds.size() != aSet->Vertices.size()) |
648 | { |
649 | for (Standard_Integer aVertIter = 0; aVertIter < anAttribs->NbElements; ++aVertIter) |
650 | { |
651 | aSet->TexCrds.push_back (BVH_Vec2f()); |
265d4508 |
652 | } |
871fa103 |
653 | } |
e276548b |
654 | |
25ef750e |
655 | if (theTransform != NULL) |
871fa103 |
656 | { |
657 | for (size_t aVertIter = aVertFrom; aVertIter < aSet->Vertices.size(); ++aVertIter) |
658 | { |
25ef750e |
659 | BVH_Vec3f& aVertex = aSet->Vertices[aVertIter]; |
660 | |
91c60b57 |
661 | BVH_Vec4f aTransVertex = *theTransform * |
662 | BVH_Vec4f (aVertex.x(), aVertex.y(), aVertex.z(), 1.f); |
25ef750e |
663 | |
664 | aVertex = BVH_Vec3f (aTransVertex.x(), aTransVertex.y(), aTransVertex.z()); |
871fa103 |
665 | } |
666 | for (size_t aVertIter = aVertFrom; aVertIter < aSet->Normals.size(); ++aVertIter) |
667 | { |
25ef750e |
668 | BVH_Vec3f& aNormal = aSet->Normals[aVertIter]; |
669 | |
91c60b57 |
670 | BVH_Vec4f aTransNormal = aNormalMatrix * |
671 | BVH_Vec4f (aNormal.x(), aNormal.y(), aNormal.z(), 0.f); |
25ef750e |
672 | |
673 | aNormal = BVH_Vec3f (aTransNormal.x(), aTransNormal.y(), aTransNormal.z()); |
871fa103 |
674 | } |
e276548b |
675 | } |
676 | |
871fa103 |
677 | if (!aBounds.IsNull()) |
265d4508 |
678 | { |
91c60b57 |
679 | for (Standard_Integer aBound = 0, aBoundStart = 0; aBound < aBounds->NbBounds; ++aBound) |
265d4508 |
680 | { |
871fa103 |
681 | const Standard_Integer aVertNum = aBounds->Bounds[aBound]; |
e276548b |
682 | |
91c60b57 |
683 | if (!addRaytraceVertexIndices (*aSet, theMaterial, aVertNum, aBoundStart, *theArray)) |
265d4508 |
684 | { |
685 | delete aSet; |
686 | return NULL; |
687 | } |
688 | |
689 | aBoundStart += aVertNum; |
690 | } |
691 | } |
692 | else |
e276548b |
693 | { |
871fa103 |
694 | const Standard_Integer aVertNum = !anIndices.IsNull() ? anIndices->NbElements : anAttribs->NbElements; |
e276548b |
695 | |
91c60b57 |
696 | if (!addRaytraceVertexIndices (*aSet, theMaterial, aVertNum, 0, *theArray)) |
e276548b |
697 | { |
265d4508 |
698 | delete aSet; |
699 | return NULL; |
e276548b |
700 | } |
e276548b |
701 | } |
702 | } |
e276548b |
703 | |
265d4508 |
704 | if (aSet->Size() != 0) |
91c60b57 |
705 | { |
265d4508 |
706 | aSet->MarkDirty(); |
91c60b57 |
707 | } |
e276548b |
708 | |
265d4508 |
709 | return aSet; |
e276548b |
710 | } |
711 | |
712 | // ======================================================================= |
189f85a3 |
713 | // function : addRaytraceVertexIndices |
e276548b |
714 | // purpose : Adds vertex indices to ray-traced scene geometry |
715 | // ======================================================================= |
91c60b57 |
716 | Standard_Boolean OpenGl_View::addRaytraceVertexIndices (OpenGl_TriangleSet& theSet, |
717 | const Standard_Integer theMatID, |
718 | const Standard_Integer theCount, |
719 | const Standard_Integer theOffset, |
720 | const OpenGl_PrimitiveArray& theArray) |
e276548b |
721 | { |
871fa103 |
722 | switch (theArray.DrawMode()) |
e276548b |
723 | { |
91c60b57 |
724 | case GL_TRIANGLES: return addRaytraceTriangleArray (theSet, theMatID, theCount, theOffset, theArray.Indices()); |
725 | case GL_TRIANGLE_FAN: return addRaytraceTriangleFanArray (theSet, theMatID, theCount, theOffset, theArray.Indices()); |
726 | case GL_TRIANGLE_STRIP: return addRaytraceTriangleStripArray (theSet, theMatID, theCount, theOffset, theArray.Indices()); |
ca3c13d1 |
727 | #if !defined(GL_ES_VERSION_2_0) |
91c60b57 |
728 | case GL_QUAD_STRIP: return addRaytraceQuadrangleStripArray (theSet, theMatID, theCount, theOffset, theArray.Indices()); |
729 | case GL_QUADS: return addRaytraceQuadrangleArray (theSet, theMatID, theCount, theOffset, theArray.Indices()); |
730 | case GL_POLYGON: return addRaytracePolygonArray (theSet, theMatID, theCount, theOffset, theArray.Indices()); |
ca3c13d1 |
731 | #endif |
e276548b |
732 | } |
91c60b57 |
733 | |
871fa103 |
734 | return Standard_False; |
e276548b |
735 | } |
736 | |
737 | // ======================================================================= |
189f85a3 |
738 | // function : addRaytraceTriangleArray |
e276548b |
739 | // purpose : Adds OpenGL triangle array to ray-traced scene geometry |
740 | // ======================================================================= |
91c60b57 |
741 | Standard_Boolean OpenGl_View::addRaytraceTriangleArray (OpenGl_TriangleSet& theSet, |
742 | const Standard_Integer theMatID, |
743 | const Standard_Integer theCount, |
744 | const Standard_Integer theOffset, |
745 | const Handle(Graphic3d_IndexBuffer)& theIndices) |
e276548b |
746 | { |
265d4508 |
747 | if (theCount < 3) |
91c60b57 |
748 | { |
e276548b |
749 | return Standard_True; |
91c60b57 |
750 | } |
e276548b |
751 | |
871fa103 |
752 | theSet.Elements.reserve (theSet.Elements.size() + theCount / 3); |
265d4508 |
753 | |
871fa103 |
754 | if (!theIndices.IsNull()) |
e276548b |
755 | { |
265d4508 |
756 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 2; aVert += 3) |
e276548b |
757 | { |
871fa103 |
758 | theSet.Elements.push_back (BVH_Vec4i (theIndices->Index (aVert + 0), |
759 | theIndices->Index (aVert + 1), |
760 | theIndices->Index (aVert + 2), |
761 | theMatID)); |
e276548b |
762 | } |
763 | } |
764 | else |
765 | { |
265d4508 |
766 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 2; aVert += 3) |
e276548b |
767 | { |
91c60b57 |
768 | theSet.Elements.push_back (BVH_Vec4i (aVert + 0, aVert + 1, aVert + 2, theMatID)); |
e276548b |
769 | } |
770 | } |
771 | |
772 | return Standard_True; |
773 | } |
774 | |
775 | // ======================================================================= |
189f85a3 |
776 | // function : addRaytraceTriangleFanArray |
e276548b |
777 | // purpose : Adds OpenGL triangle fan array to ray-traced scene geometry |
778 | // ======================================================================= |
91c60b57 |
779 | Standard_Boolean OpenGl_View::addRaytraceTriangleFanArray (OpenGl_TriangleSet& theSet, |
780 | const Standard_Integer theMatID, |
781 | const Standard_Integer theCount, |
782 | const Standard_Integer theOffset, |
783 | const Handle(Graphic3d_IndexBuffer)& theIndices) |
e276548b |
784 | { |
265d4508 |
785 | if (theCount < 3) |
91c60b57 |
786 | { |
e276548b |
787 | return Standard_True; |
91c60b57 |
788 | } |
e276548b |
789 | |
871fa103 |
790 | theSet.Elements.reserve (theSet.Elements.size() + theCount - 2); |
265d4508 |
791 | |
871fa103 |
792 | if (!theIndices.IsNull()) |
e276548b |
793 | { |
265d4508 |
794 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 2; ++aVert) |
e276548b |
795 | { |
871fa103 |
796 | theSet.Elements.push_back (BVH_Vec4i (theIndices->Index (theOffset), |
797 | theIndices->Index (aVert + 1), |
798 | theIndices->Index (aVert + 2), |
799 | theMatID)); |
e276548b |
800 | } |
801 | } |
802 | else |
803 | { |
265d4508 |
804 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 2; ++aVert) |
e276548b |
805 | { |
871fa103 |
806 | theSet.Elements.push_back (BVH_Vec4i (theOffset, |
807 | aVert + 1, |
808 | aVert + 2, |
809 | theMatID)); |
e276548b |
810 | } |
811 | } |
812 | |
813 | return Standard_True; |
814 | } |
815 | |
816 | // ======================================================================= |
189f85a3 |
817 | // function : addRaytraceTriangleStripArray |
e276548b |
818 | // purpose : Adds OpenGL triangle strip array to ray-traced scene geometry |
819 | // ======================================================================= |
91c60b57 |
820 | Standard_Boolean OpenGl_View::addRaytraceTriangleStripArray (OpenGl_TriangleSet& theSet, |
821 | const Standard_Integer theMatID, |
822 | const Standard_Integer theCount, |
823 | const Standard_Integer theOffset, |
824 | const Handle(Graphic3d_IndexBuffer)& theIndices) |
e276548b |
825 | { |
265d4508 |
826 | if (theCount < 3) |
91c60b57 |
827 | { |
e276548b |
828 | return Standard_True; |
91c60b57 |
829 | } |
e276548b |
830 | |
871fa103 |
831 | theSet.Elements.reserve (theSet.Elements.size() + theCount - 2); |
265d4508 |
832 | |
871fa103 |
833 | if (!theIndices.IsNull()) |
e276548b |
834 | { |
265d4508 |
835 | for (Standard_Integer aVert = theOffset, aCW = 0; aVert < theOffset + theCount - 2; ++aVert, aCW = (aCW + 1) % 2) |
e276548b |
836 | { |
871fa103 |
837 | theSet.Elements.push_back (BVH_Vec4i (theIndices->Index (aVert + aCW ? 1 : 0), |
838 | theIndices->Index (aVert + aCW ? 0 : 1), |
839 | theIndices->Index (aVert + 2), |
840 | theMatID)); |
e276548b |
841 | } |
842 | } |
843 | else |
844 | { |
265d4508 |
845 | for (Standard_Integer aVert = theOffset, aCW = 0; aVert < theOffset + theCount - 2; ++aVert, aCW = (aCW + 1) % 2) |
e276548b |
846 | { |
871fa103 |
847 | theSet.Elements.push_back (BVH_Vec4i (aVert + aCW ? 1 : 0, |
848 | aVert + aCW ? 0 : 1, |
849 | aVert + 2, |
850 | theMatID)); |
e276548b |
851 | } |
852 | } |
853 | |
854 | return Standard_True; |
855 | } |
856 | |
857 | // ======================================================================= |
189f85a3 |
858 | // function : addRaytraceQuadrangleArray |
e276548b |
859 | // purpose : Adds OpenGL quad array to ray-traced scene geometry |
860 | // ======================================================================= |
91c60b57 |
861 | Standard_Boolean OpenGl_View::addRaytraceQuadrangleArray (OpenGl_TriangleSet& theSet, |
862 | const Standard_Integer theMatID, |
863 | const Standard_Integer theCount, |
864 | const Standard_Integer theOffset, |
865 | const Handle(Graphic3d_IndexBuffer)& theIndices) |
e276548b |
866 | { |
265d4508 |
867 | if (theCount < 4) |
91c60b57 |
868 | { |
e276548b |
869 | return Standard_True; |
91c60b57 |
870 | } |
e276548b |
871 | |
871fa103 |
872 | theSet.Elements.reserve (theSet.Elements.size() + theCount / 2); |
265d4508 |
873 | |
871fa103 |
874 | if (!theIndices.IsNull()) |
e276548b |
875 | { |
265d4508 |
876 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 3; aVert += 4) |
e276548b |
877 | { |
871fa103 |
878 | theSet.Elements.push_back (BVH_Vec4i (theIndices->Index (aVert + 0), |
879 | theIndices->Index (aVert + 1), |
880 | theIndices->Index (aVert + 2), |
881 | theMatID)); |
882 | theSet.Elements.push_back (BVH_Vec4i (theIndices->Index (aVert + 0), |
883 | theIndices->Index (aVert + 2), |
884 | theIndices->Index (aVert + 3), |
885 | theMatID)); |
e276548b |
886 | } |
887 | } |
888 | else |
889 | { |
265d4508 |
890 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 3; aVert += 4) |
e276548b |
891 | { |
871fa103 |
892 | theSet.Elements.push_back (BVH_Vec4i (aVert + 0, aVert + 1, aVert + 2, |
893 | theMatID)); |
894 | theSet.Elements.push_back (BVH_Vec4i (aVert + 0, aVert + 2, aVert + 3, |
895 | theMatID)); |
e276548b |
896 | } |
897 | } |
898 | |
899 | return Standard_True; |
900 | } |
901 | |
902 | // ======================================================================= |
189f85a3 |
903 | // function : addRaytraceQuadrangleStripArray |
e276548b |
904 | // purpose : Adds OpenGL quad strip array to ray-traced scene geometry |
905 | // ======================================================================= |
91c60b57 |
906 | Standard_Boolean OpenGl_View::addRaytraceQuadrangleStripArray (OpenGl_TriangleSet& theSet, |
907 | const Standard_Integer theMatID, |
908 | const Standard_Integer theCount, |
909 | const Standard_Integer theOffset, |
910 | const Handle(Graphic3d_IndexBuffer)& theIndices) |
e276548b |
911 | { |
265d4508 |
912 | if (theCount < 4) |
91c60b57 |
913 | { |
e276548b |
914 | return Standard_True; |
91c60b57 |
915 | } |
e276548b |
916 | |
871fa103 |
917 | theSet.Elements.reserve (theSet.Elements.size() + 2 * theCount - 6); |
265d4508 |
918 | |
871fa103 |
919 | if (!theIndices.IsNull()) |
e276548b |
920 | { |
265d4508 |
921 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 3; aVert += 2) |
e276548b |
922 | { |
871fa103 |
923 | theSet.Elements.push_back (BVH_Vec4i (theIndices->Index (aVert + 0), |
924 | theIndices->Index (aVert + 1), |
925 | theIndices->Index (aVert + 2), |
926 | theMatID)); |
927 | |
928 | theSet.Elements.push_back (BVH_Vec4i (theIndices->Index (aVert + 1), |
929 | theIndices->Index (aVert + 3), |
930 | theIndices->Index (aVert + 2), |
931 | theMatID)); |
e276548b |
932 | } |
933 | } |
934 | else |
935 | { |
265d4508 |
936 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 3; aVert += 2) |
e276548b |
937 | { |
871fa103 |
938 | theSet.Elements.push_back (BVH_Vec4i (aVert + 0, |
939 | aVert + 1, |
940 | aVert + 2, |
941 | theMatID)); |
942 | |
943 | theSet.Elements.push_back (BVH_Vec4i (aVert + 1, |
944 | aVert + 3, |
945 | aVert + 2, |
946 | theMatID)); |
e276548b |
947 | } |
948 | } |
949 | |
950 | return Standard_True; |
951 | } |
952 | |
953 | // ======================================================================= |
189f85a3 |
954 | // function : addRaytracePolygonArray |
e276548b |
955 | // purpose : Adds OpenGL polygon array to ray-traced scene geometry |
956 | // ======================================================================= |
91c60b57 |
957 | Standard_Boolean OpenGl_View::addRaytracePolygonArray (OpenGl_TriangleSet& theSet, |
958 | const Standard_Integer theMatID, |
959 | const Standard_Integer theCount, |
960 | const Standard_Integer theOffset, |
961 | const Handle(Graphic3d_IndexBuffer)& theIndices) |
e276548b |
962 | { |
265d4508 |
963 | if (theCount < 3) |
91c60b57 |
964 | { |
e276548b |
965 | return Standard_True; |
91c60b57 |
966 | } |
e276548b |
967 | |
871fa103 |
968 | theSet.Elements.reserve (theSet.Elements.size() + theCount - 2); |
265d4508 |
969 | |
871fa103 |
970 | if (!theIndices.IsNull()) |
e276548b |
971 | { |
265d4508 |
972 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 2; ++aVert) |
e276548b |
973 | { |
871fa103 |
974 | theSet.Elements.push_back (BVH_Vec4i (theIndices->Index (theOffset), |
975 | theIndices->Index (aVert + 1), |
976 | theIndices->Index (aVert + 2), |
977 | theMatID)); |
e276548b |
978 | } |
979 | } |
980 | else |
981 | { |
265d4508 |
982 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 2; ++aVert) |
e276548b |
983 | { |
871fa103 |
984 | theSet.Elements.push_back (BVH_Vec4i (theOffset, |
985 | aVert + 1, |
986 | aVert + 2, |
987 | theMatID)); |
e276548b |
988 | } |
989 | } |
990 | |
991 | return Standard_True; |
992 | } |
993 | |
189f85a3 |
994 | const TCollection_AsciiString OpenGl_View::ShaderSource::EMPTY_PREFIX; |
995 | |
e276548b |
996 | // ======================================================================= |
fc73a202 |
997 | // function : Source |
998 | // purpose : Returns shader source combined with prefix |
e276548b |
999 | // ======================================================================= |
91c60b57 |
1000 | TCollection_AsciiString OpenGl_View::ShaderSource::Source() const |
e276548b |
1001 | { |
f8ae3605 |
1002 | const TCollection_AsciiString aVersion = "#version 140"; |
e276548b |
1003 | |
fc73a202 |
1004 | if (myPrefix.IsEmpty()) |
e276548b |
1005 | { |
fc73a202 |
1006 | return aVersion + "\n" + mySource; |
e276548b |
1007 | } |
1008 | |
fc73a202 |
1009 | return aVersion + "\n" + myPrefix + "\n" + mySource; |
e276548b |
1010 | } |
1011 | |
1012 | // ======================================================================= |
fc73a202 |
1013 | // function : Load |
1014 | // purpose : Loads shader source from specified files |
e276548b |
1015 | // ======================================================================= |
73722cc9 |
1016 | Standard_Boolean OpenGl_View::ShaderSource::Load (const TCollection_AsciiString* theFileNames, |
1017 | const TCollection_AsciiString& thePrefix) |
e276548b |
1018 | { |
73722cc9 |
1019 | myError.Clear(); |
fc73a202 |
1020 | mySource.Clear(); |
73722cc9 |
1021 | TCollection_AsciiString aMissingFiles; |
189f85a3 |
1022 | for (Standard_Integer anIndex = 0; !theFileNames[anIndex].IsEmpty(); ++anIndex) |
fc73a202 |
1023 | { |
1024 | OSD_File aFile (theFileNames[anIndex]); |
73722cc9 |
1025 | if (aFile.Exists()) |
1026 | { |
1027 | aFile.Open (OSD_ReadOnly, OSD_Protection()); |
1028 | } |
1029 | if (!aFile.IsOpen()) |
1030 | { |
1031 | if (!aMissingFiles.IsEmpty()) |
1032 | { |
1033 | aMissingFiles += ", "; |
1034 | } |
1035 | aMissingFiles += TCollection_AsciiString("'") + theFileNames[anIndex] + "'"; |
1036 | continue; |
1037 | } |
1038 | else if (!aMissingFiles.IsEmpty()) |
1039 | { |
1040 | aFile.Close(); |
1041 | continue; |
1042 | } |
265d4508 |
1043 | |
fc73a202 |
1044 | TCollection_AsciiString aSource; |
fc73a202 |
1045 | aFile.Read (aSource, (Standard_Integer) aFile.Size()); |
fc73a202 |
1046 | if (!aSource.IsEmpty()) |
1047 | { |
1048 | mySource += TCollection_AsciiString ("\n") + aSource; |
1049 | } |
fc73a202 |
1050 | aFile.Close(); |
68333c8f |
1051 | } |
189f85a3 |
1052 | |
1053 | myPrefix = thePrefix; |
73722cc9 |
1054 | if (!aMissingFiles.IsEmpty()) |
1055 | { |
1056 | myError = TCollection_AsciiString("Shader files ") + aMissingFiles + " are missing or inaccessible"; |
1057 | return Standard_False; |
1058 | } |
1059 | return Standard_True; |
e276548b |
1060 | } |
1061 | |
1062 | // ======================================================================= |
189f85a3 |
1063 | // function : generateShaderPrefix |
91c60b57 |
1064 | // purpose : Generates shader prefix based on current ray-tracing options |
1065 | // ======================================================================= |
1066 | TCollection_AsciiString OpenGl_View::generateShaderPrefix (const Handle(OpenGl_Context)& theGlContext) const |
1067 | { |
1068 | TCollection_AsciiString aPrefixString = |
1069 | TCollection_AsciiString ("#define STACK_SIZE ") + TCollection_AsciiString (myRaytraceParameters.StackSize) + "\n" + |
1070 | TCollection_AsciiString ("#define NB_BOUNCES ") + TCollection_AsciiString (myRaytraceParameters.NbBounces); |
1071 | |
1072 | if (myRaytraceParameters.TransparentShadows) |
1073 | { |
1074 | aPrefixString += TCollection_AsciiString ("\n#define TRANSPARENT_SHADOWS"); |
1075 | } |
1076 | |
f483f2ed |
1077 | // If OpenGL driver supports bindless textures and texturing |
1078 | // is actually used, activate texturing in ray-tracing mode |
1079 | if (myRaytraceParameters.UseBindlessTextures && theGlContext->arbTexBindless != NULL) |
91c60b57 |
1080 | { |
1081 | aPrefixString += TCollection_AsciiString ("\n#define USE_TEXTURES") + |
1082 | TCollection_AsciiString ("\n#define MAX_TEX_NUMBER ") + TCollection_AsciiString (OpenGl_RaytraceGeometry::MAX_TEX_NUMBER); |
1083 | } |
1084 | |
189f85a3 |
1085 | if (myRaytraceParameters.GlobalIllumination) |
1086 | { |
1087 | aPrefixString += TCollection_AsciiString ("\n#define PATH_TRACING"); |
1088 | } |
1089 | |
91c60b57 |
1090 | return aPrefixString; |
1091 | } |
1092 | |
1093 | // ======================================================================= |
189f85a3 |
1094 | // function : safeFailBack |
91c60b57 |
1095 | // purpose : Performs safe exit when shaders initialization fails |
1096 | // ======================================================================= |
1097 | Standard_Boolean OpenGl_View::safeFailBack (const TCollection_ExtendedString& theMessage, |
1098 | const Handle(OpenGl_Context)& theGlContext) |
1099 | { |
1100 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION_ARB, |
1101 | GL_DEBUG_TYPE_ERROR_ARB, 0, GL_DEBUG_SEVERITY_HIGH_ARB, theMessage); |
1102 | |
1103 | myRaytraceInitStatus = OpenGl_RT_FAIL; |
1104 | |
1105 | releaseRaytraceResources (theGlContext); |
1106 | |
1107 | return Standard_False; |
1108 | } |
1109 | |
1110 | // ======================================================================= |
189f85a3 |
1111 | // function : initShader |
fc73a202 |
1112 | // purpose : Creates new shader object with specified source |
e276548b |
1113 | // ======================================================================= |
91c60b57 |
1114 | Handle(OpenGl_ShaderObject) OpenGl_View::initShader (const GLenum theType, |
1115 | const ShaderSource& theSource, |
1116 | const Handle(OpenGl_Context)& theGlContext) |
e276548b |
1117 | { |
fc73a202 |
1118 | Handle(OpenGl_ShaderObject) aShader = new OpenGl_ShaderObject (theType); |
e276548b |
1119 | |
91c60b57 |
1120 | if (!aShader->Create (theGlContext)) |
e276548b |
1121 | { |
07039714 |
1122 | const TCollection_ExtendedString aMessage = TCollection_ExtendedString ("Error: Failed to create ") + |
1123 | (theType == GL_VERTEX_SHADER ? "vertex" : "fragment") + " shader object"; |
1124 | |
91c60b57 |
1125 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION_ARB, |
fc73a202 |
1126 | GL_DEBUG_TYPE_ERROR_ARB, 0, GL_DEBUG_SEVERITY_HIGH_ARB, aMessage); |
e276548b |
1127 | |
91c60b57 |
1128 | aShader->Release (theGlContext.operator->()); |
e276548b |
1129 | |
fc73a202 |
1130 | return Handle(OpenGl_ShaderObject)(); |
e276548b |
1131 | } |
5322131b |
1132 | |
91c60b57 |
1133 | if (!aShader->LoadSource (theGlContext, theSource.Source())) |
fc73a202 |
1134 | { |
07039714 |
1135 | const TCollection_ExtendedString aMessage = TCollection_ExtendedString ("Error: Failed to set ") + |
1136 | (theType == GL_VERTEX_SHADER ? "vertex" : "fragment") + " shader source"; |
1137 | |
91c60b57 |
1138 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION_ARB, |
fc73a202 |
1139 | GL_DEBUG_TYPE_ERROR_ARB, 0, GL_DEBUG_SEVERITY_HIGH_ARB, aMessage); |
e276548b |
1140 | |
91c60b57 |
1141 | aShader->Release (theGlContext.operator->()); |
e276548b |
1142 | |
fc73a202 |
1143 | return Handle(OpenGl_ShaderObject)(); |
1144 | } |
e276548b |
1145 | |
fc73a202 |
1146 | TCollection_AsciiString aBuildLog; |
e276548b |
1147 | |
91c60b57 |
1148 | if (!aShader->Compile (theGlContext)) |
e276548b |
1149 | { |
91c60b57 |
1150 | aShader->FetchInfoLog (theGlContext, aBuildLog); |
fc73a202 |
1151 | |
07039714 |
1152 | const TCollection_ExtendedString aMessage = TCollection_ExtendedString ("Error: Failed to compile ") + |
1153 | (theType == GL_VERTEX_SHADER ? "vertex" : "fragment") + " shader object:\n" + aBuildLog; |
1154 | |
91c60b57 |
1155 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION_ARB, |
07039714 |
1156 | GL_DEBUG_TYPE_ERROR_ARB, 0, GL_DEBUG_SEVERITY_HIGH_ARB, aMessage); |
e276548b |
1157 | |
91c60b57 |
1158 | aShader->Release (theGlContext.operator->()); |
fc73a202 |
1159 | |
1160 | return Handle(OpenGl_ShaderObject)(); |
1161 | } |
91c60b57 |
1162 | else if (theGlContext->caps->glslWarnings) |
fc73a202 |
1163 | { |
91c60b57 |
1164 | aShader->FetchInfoLog (theGlContext, aBuildLog); |
07039714 |
1165 | |
1166 | if (!aBuildLog.IsEmpty() && !aBuildLog.IsEqual ("No errors.\n")) |
fc73a202 |
1167 | { |
07039714 |
1168 | const TCollection_ExtendedString aMessage = TCollection_ExtendedString (theType == GL_VERTEX_SHADER ? |
1169 | "Vertex" : "Fragment") + " shader was compiled with following warnings:\n" + aBuildLog; |
1170 | |
91c60b57 |
1171 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION_ARB, |
07039714 |
1172 | GL_DEBUG_TYPE_PORTABILITY_ARB, 0, GL_DEBUG_SEVERITY_LOW_ARB, aMessage); |
fc73a202 |
1173 | } |
07039714 |
1174 | } |
e276548b |
1175 | |
fc73a202 |
1176 | return aShader; |
e276548b |
1177 | } |
1178 | |
1179 | // ======================================================================= |
189f85a3 |
1180 | // function : initProgram |
1181 | // purpose : Creates GLSL program from the given shader objects |
1182 | // ======================================================================= |
1183 | Handle(OpenGl_ShaderProgram) OpenGl_View::initProgram (const Handle(OpenGl_Context)& theGlContext, |
1184 | const Handle(OpenGl_ShaderObject)& theVertShader, |
1185 | const Handle(OpenGl_ShaderObject)& theFragShader) |
1186 | { |
1187 | Handle(OpenGl_ShaderProgram) aProgram = new OpenGl_ShaderProgram; |
1188 | |
1189 | if (!aProgram->Create (theGlContext)) |
1190 | { |
1191 | theVertShader->Release (theGlContext.operator->()); |
1192 | |
1193 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION_ARB, |
1194 | GL_DEBUG_TYPE_ERROR_ARB, 0, GL_DEBUG_SEVERITY_HIGH_ARB, "Failed to create shader program"); |
1195 | |
1196 | return Handle(OpenGl_ShaderProgram)(); |
1197 | } |
1198 | |
1199 | if (!aProgram->AttachShader (theGlContext, theVertShader) |
1200 | || !aProgram->AttachShader (theGlContext, theFragShader)) |
1201 | { |
1202 | theVertShader->Release (theGlContext.operator->()); |
1203 | |
1204 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION_ARB, |
1205 | GL_DEBUG_TYPE_ERROR_ARB, 0, GL_DEBUG_SEVERITY_HIGH_ARB, "Failed to attach shader objects"); |
1206 | |
1207 | return Handle(OpenGl_ShaderProgram)(); |
1208 | } |
1209 | |
1210 | aProgram->SetAttributeName (theGlContext, Graphic3d_TOA_POS, "occVertex"); |
1211 | |
1212 | TCollection_AsciiString aLinkLog; |
1213 | |
1214 | if (!aProgram->Link (theGlContext)) |
1215 | { |
1216 | aProgram->FetchInfoLog (theGlContext, aLinkLog); |
1217 | |
1218 | const TCollection_ExtendedString aMessage = TCollection_ExtendedString ( |
1219 | "Failed to link shader program:\n") + aLinkLog; |
1220 | |
1221 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION_ARB, |
1222 | GL_DEBUG_TYPE_ERROR_ARB, 0, GL_DEBUG_SEVERITY_HIGH_ARB, aMessage); |
1223 | |
1224 | return Handle(OpenGl_ShaderProgram)(); |
1225 | } |
1226 | else if (theGlContext->caps->glslWarnings) |
1227 | { |
1228 | myRaytraceProgram->FetchInfoLog (theGlContext, aLinkLog); |
1229 | |
1230 | if (!aLinkLog.IsEmpty() && !aLinkLog.IsEqual ("No errors.\n")) |
1231 | { |
1232 | const TCollection_ExtendedString aMessage = TCollection_ExtendedString ( |
1233 | "Shader program was linked with following warnings:\n") + aLinkLog; |
1234 | |
1235 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION_ARB, |
1236 | GL_DEBUG_TYPE_PORTABILITY_ARB, 0, GL_DEBUG_SEVERITY_LOW_ARB, aMessage); |
1237 | } |
1238 | } |
1239 | |
1240 | return aProgram; |
1241 | } |
1242 | |
1243 | // ======================================================================= |
1244 | // function : initRaytraceResources |
91c60b57 |
1245 | // purpose : Initializes OpenGL/GLSL shader programs |
e276548b |
1246 | // ======================================================================= |
91c60b57 |
1247 | Standard_Boolean OpenGl_View::initRaytraceResources (const Graphic3d_CView& theCView, const Handle(OpenGl_Context)& theGlContext) |
e276548b |
1248 | { |
91c60b57 |
1249 | if (myRaytraceInitStatus == OpenGl_RT_FAIL) |
1250 | { |
1251 | return Standard_False; |
1252 | } |
265d4508 |
1253 | |
91c60b57 |
1254 | Standard_Boolean aToRebuildShaders = Standard_False; |
265d4508 |
1255 | |
91c60b57 |
1256 | if (myRaytraceInitStatus == OpenGl_RT_INIT) |
1257 | { |
1258 | if (!myIsRaytraceDataValid) |
1259 | return Standard_True; |
07039714 |
1260 | |
91c60b57 |
1261 | const Standard_Integer aRequiredStackSize = |
1262 | myRaytraceGeometry.HighLevelTreeDepth() + myRaytraceGeometry.BottomLevelTreeDepth(); |
e276548b |
1263 | |
91c60b57 |
1264 | if (myRaytraceParameters.StackSize < aRequiredStackSize) |
1265 | { |
1266 | myRaytraceParameters.StackSize = Max (aRequiredStackSize, THE_DEFAULT_STACK_SIZE); |
e276548b |
1267 | |
fc73a202 |
1268 | aToRebuildShaders = Standard_True; |
1269 | } |
1270 | else |
1271 | { |
bc8c79bb |
1272 | if (aRequiredStackSize < myRaytraceParameters.StackSize) |
fc73a202 |
1273 | { |
bc8c79bb |
1274 | if (myRaytraceParameters.StackSize > THE_DEFAULT_STACK_SIZE) |
fc73a202 |
1275 | { |
bc8c79bb |
1276 | myRaytraceParameters.StackSize = Max (aRequiredStackSize, THE_DEFAULT_STACK_SIZE); |
fc73a202 |
1277 | aToRebuildShaders = Standard_True; |
1278 | } |
1279 | } |
1280 | } |
e276548b |
1281 | |
25ef750e |
1282 | if (theCView.RenderParams.RaytracingDepth != myRaytraceParameters.NbBounces) |
bc8c79bb |
1283 | { |
25ef750e |
1284 | myRaytraceParameters.NbBounces = theCView.RenderParams.RaytracingDepth; |
bc8c79bb |
1285 | aToRebuildShaders = Standard_True; |
1286 | } |
1287 | |
f483f2ed |
1288 | if (myRaytraceGeometry.HasTextures() != myRaytraceParameters.UseBindlessTextures) |
1289 | { |
1290 | myRaytraceParameters.UseBindlessTextures = myRaytraceGeometry.HasTextures(); |
1291 | aToRebuildShaders = Standard_True; |
1292 | } |
1293 | |
bc8c79bb |
1294 | if (theCView.RenderParams.IsTransparentShadowEnabled != myRaytraceParameters.TransparentShadows) |
1295 | { |
1296 | myRaytraceParameters.TransparentShadows = theCView.RenderParams.IsTransparentShadowEnabled; |
1297 | aToRebuildShaders = Standard_True; |
1298 | } |
1299 | |
189f85a3 |
1300 | if (theCView.RenderParams.IsGlobalIlluminationEnabled != myRaytraceParameters.GlobalIllumination) |
1301 | { |
1302 | myRaytraceParameters.GlobalIllumination = theCView.RenderParams.IsGlobalIlluminationEnabled; |
1303 | aToRebuildShaders = Standard_True; |
1304 | } |
1305 | |
fc73a202 |
1306 | if (aToRebuildShaders) |
1307 | { |
189f85a3 |
1308 | // Reject accumulated frames |
1309 | myAccumFrames = 0; |
e276548b |
1310 | |
189f85a3 |
1311 | // We need to update environment texture |
91c60b57 |
1312 | myToUpdateEnvironmentMap = Standard_True; |
84c71f29 |
1313 | |
91c60b57 |
1314 | TCollection_AsciiString aPrefixString = generateShaderPrefix (theGlContext); |
bc8c79bb |
1315 | |
1316 | #ifdef RAY_TRACE_PRINT_INFO |
1317 | std::cout << "GLSL prefix string:" << std::endl << aPrefixString << std::endl; |
1318 | #endif |
265d4508 |
1319 | |
bc8c79bb |
1320 | myRaytraceShaderSource.SetPrefix (aPrefixString); |
1321 | myPostFSAAShaderSource.SetPrefix (aPrefixString); |
265d4508 |
1322 | |
91c60b57 |
1323 | if (!myRaytraceShader->LoadSource (theGlContext, myRaytraceShaderSource.Source()) |
1324 | || !myPostFSAAShader->LoadSource (theGlContext, myPostFSAAShaderSource.Source())) |
fc73a202 |
1325 | { |
91c60b57 |
1326 | return safeFailBack ("Failed to load source into ray-tracing fragment shaders", theGlContext); |
fc73a202 |
1327 | } |
265d4508 |
1328 | |
91c60b57 |
1329 | if (!myRaytraceShader->Compile (theGlContext) |
1330 | || !myPostFSAAShader->Compile (theGlContext)) |
fc73a202 |
1331 | { |
91c60b57 |
1332 | return safeFailBack ("Failed to compile ray-tracing fragment shaders", theGlContext); |
fc73a202 |
1333 | } |
1334 | |
91c60b57 |
1335 | myRaytraceProgram->SetAttributeName (theGlContext, Graphic3d_TOA_POS, "occVertex"); |
1336 | myPostFSAAProgram->SetAttributeName (theGlContext, Graphic3d_TOA_POS, "occVertex"); |
1337 | if (!myRaytraceProgram->Link (theGlContext) |
1338 | || !myPostFSAAProgram->Link (theGlContext)) |
fc73a202 |
1339 | { |
91c60b57 |
1340 | return safeFailBack ("Failed to initialize vertex attributes for ray-tracing program", theGlContext); |
fc73a202 |
1341 | } |
1342 | } |
e276548b |
1343 | } |
1344 | |
91c60b57 |
1345 | if (myRaytraceInitStatus == OpenGl_RT_NONE) |
fc73a202 |
1346 | { |
91c60b57 |
1347 | if (!theGlContext->IsGlGreaterEqual (3, 1)) |
fc73a202 |
1348 | { |
91c60b57 |
1349 | return safeFailBack ("Ray-tracing requires OpenGL 3.1 and higher", theGlContext); |
25ef750e |
1350 | } |
91c60b57 |
1351 | else if (!theGlContext->arbTboRGB32) |
25ef750e |
1352 | { |
91c60b57 |
1353 | return safeFailBack ("Ray-tracing requires OpenGL 4.0+ or GL_ARB_texture_buffer_object_rgb32 extension", theGlContext); |
1354 | } |
1355 | else if (!theGlContext->arbFBOBlit) |
1356 | { |
1357 | return safeFailBack ("Ray-tracing requires EXT_framebuffer_blit extension", theGlContext); |
fc73a202 |
1358 | } |
5322131b |
1359 | |
25ef750e |
1360 | myRaytraceParameters.NbBounces = theCView.RenderParams.RaytracingDepth; |
bc8c79bb |
1361 | |
fc73a202 |
1362 | TCollection_AsciiString aFolder = Graphic3d_ShaderProgram::ShadersFolder(); |
265d4508 |
1363 | |
fc73a202 |
1364 | if (aFolder.IsEmpty()) |
1365 | { |
91c60b57 |
1366 | return safeFailBack ("Failed to locate shaders directory", theGlContext); |
fc73a202 |
1367 | } |
265d4508 |
1368 | |
fc73a202 |
1369 | if (myIsRaytraceDataValid) |
1370 | { |
bc8c79bb |
1371 | myRaytraceParameters.StackSize = Max (THE_DEFAULT_STACK_SIZE, |
fc73a202 |
1372 | myRaytraceGeometry.HighLevelTreeDepth() + myRaytraceGeometry.BottomLevelTreeDepth()); |
1373 | } |
265d4508 |
1374 | |
91c60b57 |
1375 | TCollection_AsciiString aPrefixString = generateShaderPrefix (theGlContext); |
bc8c79bb |
1376 | |
1377 | #ifdef RAY_TRACE_PRINT_INFO |
1378 | std::cout << "GLSL prefix string:" << std::endl << aPrefixString << std::endl; |
1379 | #endif |
1380 | |
73722cc9 |
1381 | ShaderSource aBasicVertShaderSrc; |
fc73a202 |
1382 | { |
73722cc9 |
1383 | TCollection_AsciiString aFiles[] = { aFolder + "/RaytraceBase.vs", "" }; |
1384 | if (!aBasicVertShaderSrc.Load (aFiles)) |
fc73a202 |
1385 | { |
73722cc9 |
1386 | return safeFailBack (aBasicVertShaderSrc.ErrorDescription(), theGlContext); |
fc73a202 |
1387 | } |
73722cc9 |
1388 | } |
265d4508 |
1389 | |
73722cc9 |
1390 | { |
07039714 |
1391 | TCollection_AsciiString aFiles[] = { aFolder + "/RaytraceBase.fs", |
189f85a3 |
1392 | aFolder + "/PathtraceBase.fs", |
1393 | aFolder + "/RaytraceRender.fs", |
1394 | "" }; |
73722cc9 |
1395 | if (!myRaytraceShaderSource.Load (aFiles, aPrefixString)) |
1396 | { |
1397 | return safeFailBack (myRaytraceShaderSource.ErrorDescription(), theGlContext); |
1398 | } |
e276548b |
1399 | |
73722cc9 |
1400 | Handle(OpenGl_ShaderObject) aBasicVertShader = initShader (GL_VERTEX_SHADER, aBasicVertShaderSrc, theGlContext); |
1401 | if (aBasicVertShader.IsNull()) |
1402 | { |
1403 | return safeFailBack ("Failed to initialize ray-trace vertex shader", theGlContext); |
1404 | } |
265d4508 |
1405 | |
91c60b57 |
1406 | myRaytraceShader = initShader (GL_FRAGMENT_SHADER, myRaytraceShaderSource, theGlContext); |
fc73a202 |
1407 | if (myRaytraceShader.IsNull()) |
1408 | { |
91c60b57 |
1409 | aBasicVertShader->Release (theGlContext.operator->()); |
91c60b57 |
1410 | return safeFailBack ("Failed to initialize ray-trace fragment shader", theGlContext); |
fc73a202 |
1411 | } |
265d4508 |
1412 | |
189f85a3 |
1413 | myRaytraceProgram = initProgram (theGlContext, aBasicVertShader, myRaytraceShader); |
189f85a3 |
1414 | if (myRaytraceProgram.IsNull()) |
fc73a202 |
1415 | { |
189f85a3 |
1416 | return safeFailBack ("Failed to initialize ray-trace shader program", theGlContext); |
fc73a202 |
1417 | } |
1418 | } |
265d4508 |
1419 | |
fc73a202 |
1420 | { |
73722cc9 |
1421 | TCollection_AsciiString aFiles[] = { aFolder + "/RaytraceBase.fs", |
1422 | aFolder + "/RaytraceSmooth.fs", |
1423 | "" }; |
1424 | if (!myPostFSAAShaderSource.Load (aFiles, aPrefixString)) |
1425 | { |
1426 | return safeFailBack (myPostFSAAShaderSource.ErrorDescription(), theGlContext); |
1427 | } |
265d4508 |
1428 | |
73722cc9 |
1429 | Handle(OpenGl_ShaderObject) aBasicVertShader = initShader (GL_VERTEX_SHADER, aBasicVertShaderSrc, theGlContext); |
fc73a202 |
1430 | if (aBasicVertShader.IsNull()) |
1431 | { |
91c60b57 |
1432 | return safeFailBack ("Failed to initialize FSAA vertex shader", theGlContext); |
fc73a202 |
1433 | } |
265d4508 |
1434 | |
91c60b57 |
1435 | myPostFSAAShader = initShader (GL_FRAGMENT_SHADER, myPostFSAAShaderSource, theGlContext); |
fc73a202 |
1436 | if (myPostFSAAShader.IsNull()) |
1437 | { |
91c60b57 |
1438 | aBasicVertShader->Release (theGlContext.operator->()); |
91c60b57 |
1439 | return safeFailBack ("Failed to initialize FSAA fragment shader", theGlContext); |
fc73a202 |
1440 | } |
265d4508 |
1441 | |
189f85a3 |
1442 | myPostFSAAProgram = initProgram (theGlContext, aBasicVertShader, myPostFSAAShader); |
189f85a3 |
1443 | if (myPostFSAAProgram.IsNull()) |
fc73a202 |
1444 | { |
189f85a3 |
1445 | return safeFailBack ("Failed to initialize FSAA shader program", theGlContext); |
fc73a202 |
1446 | } |
189f85a3 |
1447 | } |
fc73a202 |
1448 | |
189f85a3 |
1449 | { |
73722cc9 |
1450 | ShaderSource aDispShaderSrc; |
1451 | TCollection_AsciiString aFiles[] = { aFolder + "/Display.fs", "" }; |
1452 | if (!aDispShaderSrc.Load (aFiles, aPrefixString)) |
1453 | { |
1454 | return safeFailBack (aDispShaderSrc.ErrorDescription(), theGlContext); |
1455 | } |
fc73a202 |
1456 | |
73722cc9 |
1457 | Handle(OpenGl_ShaderObject) aBasicVertShader = initShader (GL_VERTEX_SHADER, aBasicVertShaderSrc, theGlContext); |
189f85a3 |
1458 | if (aBasicVertShader.IsNull()) |
1459 | { |
1460 | return safeFailBack ("Failed to set vertex shader source", theGlContext); |
fc73a202 |
1461 | } |
1462 | |
73722cc9 |
1463 | Handle(OpenGl_ShaderObject) aDisplayShader = initShader (GL_FRAGMENT_SHADER, aDispShaderSrc, theGlContext); |
189f85a3 |
1464 | if (aDisplayShader.IsNull()) |
fc73a202 |
1465 | { |
189f85a3 |
1466 | aBasicVertShader->Release (theGlContext.operator->()); |
189f85a3 |
1467 | return safeFailBack ("Failed to set display fragment shader source", theGlContext); |
07039714 |
1468 | } |
fc73a202 |
1469 | |
189f85a3 |
1470 | myOutImageProgram = initProgram (theGlContext, aBasicVertShader, aDisplayShader); |
189f85a3 |
1471 | if (myOutImageProgram.IsNull()) |
1472 | { |
1473 | return safeFailBack ("Failed to initialize output shader program", theGlContext); |
fc73a202 |
1474 | } |
e276548b |
1475 | } |
fc73a202 |
1476 | } |
e276548b |
1477 | |
91c60b57 |
1478 | if (myRaytraceInitStatus == OpenGl_RT_NONE || aToRebuildShaders) |
fc73a202 |
1479 | { |
1480 | for (Standard_Integer anIndex = 0; anIndex < 2; ++anIndex) |
e276548b |
1481 | { |
fc73a202 |
1482 | Handle(OpenGl_ShaderProgram)& aShaderProgram = |
1483 | (anIndex == 0) ? myRaytraceProgram : myPostFSAAProgram; |
1484 | |
91c60b57 |
1485 | theGlContext->BindProgram (aShaderProgram); |
fc73a202 |
1486 | |
91c60b57 |
1487 | aShaderProgram->SetSampler (theGlContext, |
fc73a202 |
1488 | "uSceneMinPointTexture", OpenGl_RT_SceneMinPointTexture); |
91c60b57 |
1489 | aShaderProgram->SetSampler (theGlContext, |
fc73a202 |
1490 | "uSceneMaxPointTexture", OpenGl_RT_SceneMaxPointTexture); |
91c60b57 |
1491 | aShaderProgram->SetSampler (theGlContext, |
fc73a202 |
1492 | "uSceneNodeInfoTexture", OpenGl_RT_SceneNodeInfoTexture); |
91c60b57 |
1493 | aShaderProgram->SetSampler (theGlContext, |
fc73a202 |
1494 | "uGeometryVertexTexture", OpenGl_RT_GeometryVertexTexture); |
91c60b57 |
1495 | aShaderProgram->SetSampler (theGlContext, |
fc73a202 |
1496 | "uGeometryNormalTexture", OpenGl_RT_GeometryNormalTexture); |
91c60b57 |
1497 | aShaderProgram->SetSampler (theGlContext, |
25ef750e |
1498 | "uGeometryTexCrdTexture", OpenGl_RT_GeometryTexCrdTexture); |
91c60b57 |
1499 | aShaderProgram->SetSampler (theGlContext, |
25ef750e |
1500 | "uGeometryTriangTexture", OpenGl_RT_GeometryTriangTexture); |
91c60b57 |
1501 | aShaderProgram->SetSampler (theGlContext, |
84c71f29 |
1502 | "uSceneTransformTexture", OpenGl_RT_SceneTransformTexture); |
91c60b57 |
1503 | aShaderProgram->SetSampler (theGlContext, |
84c71f29 |
1504 | "uEnvironmentMapTexture", OpenGl_RT_EnvironmentMapTexture); |
91c60b57 |
1505 | aShaderProgram->SetSampler (theGlContext, |
25ef750e |
1506 | "uRaytraceMaterialTexture", OpenGl_RT_RaytraceMaterialTexture); |
91c60b57 |
1507 | aShaderProgram->SetSampler (theGlContext, |
25ef750e |
1508 | "uRaytraceLightSrcTexture", OpenGl_RT_RaytraceLightSrcTexture); |
fc73a202 |
1509 | |
91c60b57 |
1510 | aShaderProgram->SetSampler (theGlContext, |
a89742cf |
1511 | "uOpenGlColorTexture", OpenGl_RT_OpenGlColorTexture); |
91c60b57 |
1512 | aShaderProgram->SetSampler (theGlContext, |
a89742cf |
1513 | "uOpenGlDepthTexture", OpenGl_RT_OpenGlDepthTexture); |
1514 | |
fc73a202 |
1515 | if (anIndex == 1) |
1516 | { |
91c60b57 |
1517 | aShaderProgram->SetSampler (theGlContext, |
189f85a3 |
1518 | "uFSAAInputTexture", OpenGl_RT_FsaaInputTexture); |
1519 | } |
1520 | else |
1521 | { |
1522 | aShaderProgram->SetSampler (theGlContext, |
1523 | "uAccumTexture", OpenGl_RT_PrevAccumTexture); |
fc73a202 |
1524 | } |
265d4508 |
1525 | |
fc73a202 |
1526 | myUniformLocations[anIndex][OpenGl_RT_aPosition] = |
91c60b57 |
1527 | aShaderProgram->GetAttributeLocation (theGlContext, "occVertex"); |
fc73a202 |
1528 | |
1529 | myUniformLocations[anIndex][OpenGl_RT_uOriginLB] = |
91c60b57 |
1530 | aShaderProgram->GetUniformLocation (theGlContext, "uOriginLB"); |
fc73a202 |
1531 | myUniformLocations[anIndex][OpenGl_RT_uOriginRB] = |
91c60b57 |
1532 | aShaderProgram->GetUniformLocation (theGlContext, "uOriginRB"); |
fc73a202 |
1533 | myUniformLocations[anIndex][OpenGl_RT_uOriginLT] = |
91c60b57 |
1534 | aShaderProgram->GetUniformLocation (theGlContext, "uOriginLT"); |
fc73a202 |
1535 | myUniformLocations[anIndex][OpenGl_RT_uOriginRT] = |
91c60b57 |
1536 | aShaderProgram->GetUniformLocation (theGlContext, "uOriginRT"); |
fc73a202 |
1537 | myUniformLocations[anIndex][OpenGl_RT_uDirectLB] = |
91c60b57 |
1538 | aShaderProgram->GetUniformLocation (theGlContext, "uDirectLB"); |
fc73a202 |
1539 | myUniformLocations[anIndex][OpenGl_RT_uDirectRB] = |
91c60b57 |
1540 | aShaderProgram->GetUniformLocation (theGlContext, "uDirectRB"); |
fc73a202 |
1541 | myUniformLocations[anIndex][OpenGl_RT_uDirectLT] = |
91c60b57 |
1542 | aShaderProgram->GetUniformLocation (theGlContext, "uDirectLT"); |
fc73a202 |
1543 | myUniformLocations[anIndex][OpenGl_RT_uDirectRT] = |
91c60b57 |
1544 | aShaderProgram->GetUniformLocation (theGlContext, "uDirectRT"); |
25ef750e |
1545 | myUniformLocations[anIndex][OpenGl_RT_uUnviewMat] = |
91c60b57 |
1546 | aShaderProgram->GetUniformLocation (theGlContext, "uUnviewMat"); |
fc73a202 |
1547 | |
1548 | myUniformLocations[anIndex][OpenGl_RT_uSceneRad] = |
91c60b57 |
1549 | aShaderProgram->GetUniformLocation (theGlContext, "uSceneRadius"); |
fc73a202 |
1550 | myUniformLocations[anIndex][OpenGl_RT_uSceneEps] = |
91c60b57 |
1551 | aShaderProgram->GetUniformLocation (theGlContext, "uSceneEpsilon"); |
25ef750e |
1552 | myUniformLocations[anIndex][OpenGl_RT_uLightCount] = |
91c60b57 |
1553 | aShaderProgram->GetUniformLocation (theGlContext, "uLightCount"); |
25ef750e |
1554 | myUniformLocations[anIndex][OpenGl_RT_uLightAmbnt] = |
91c60b57 |
1555 | aShaderProgram->GetUniformLocation (theGlContext, "uGlobalAmbient"); |
fc73a202 |
1556 | |
1557 | myUniformLocations[anIndex][OpenGl_RT_uOffsetX] = |
91c60b57 |
1558 | aShaderProgram->GetUniformLocation (theGlContext, "uOffsetX"); |
fc73a202 |
1559 | myUniformLocations[anIndex][OpenGl_RT_uOffsetY] = |
91c60b57 |
1560 | aShaderProgram->GetUniformLocation (theGlContext, "uOffsetY"); |
fc73a202 |
1561 | myUniformLocations[anIndex][OpenGl_RT_uSamples] = |
91c60b57 |
1562 | aShaderProgram->GetUniformLocation (theGlContext, "uSamples"); |
84c71f29 |
1563 | |
189f85a3 |
1564 | myUniformLocations[anIndex][OpenGl_RT_uTexSamplersArray] = |
91c60b57 |
1565 | aShaderProgram->GetUniformLocation (theGlContext, "uTextureSamplers"); |
25ef750e |
1566 | |
189f85a3 |
1567 | myUniformLocations[anIndex][OpenGl_RT_uShadowsEnabled] = |
1568 | aShaderProgram->GetUniformLocation (theGlContext, "uShadowsEnabled"); |
1569 | myUniformLocations[anIndex][OpenGl_RT_uReflectEnabled] = |
1570 | aShaderProgram->GetUniformLocation (theGlContext, "uReflectEnabled"); |
1571 | myUniformLocations[anIndex][OpenGl_RT_uSphereMapEnabled] = |
1572 | aShaderProgram->GetUniformLocation (theGlContext, "uSphereMapEnabled"); |
1573 | myUniformLocations[anIndex][OpenGl_RT_uSphereMapForBack] = |
1574 | aShaderProgram->GetUniformLocation (theGlContext, "uSphereMapForBack"); |
1575 | |
1576 | myUniformLocations[anIndex][OpenGl_RT_uSampleWeight] = |
1577 | aShaderProgram->GetUniformLocation (theGlContext, "uSampleWeight"); |
1578 | myUniformLocations[anIndex][OpenGl_RT_uFrameRndSeed] = |
1579 | aShaderProgram->GetUniformLocation (theGlContext, "uFrameRndSeed"); |
1580 | |
1581 | myUniformLocations[anIndex][OpenGl_RT_uBackColorTop] = |
1582 | aShaderProgram->GetUniformLocation (theGlContext, "uBackColorTop"); |
1583 | myUniformLocations[anIndex][OpenGl_RT_uBackColorBot] = |
1584 | aShaderProgram->GetUniformLocation (theGlContext, "uBackColorBot"); |
fc73a202 |
1585 | } |
265d4508 |
1586 | |
189f85a3 |
1587 | theGlContext->BindProgram (myOutImageProgram); |
1588 | |
1589 | myOutImageProgram->SetSampler (theGlContext, |
1590 | "uInputTexture", OpenGl_RT_PrevAccumTexture); |
1591 | |
91c60b57 |
1592 | theGlContext->BindProgram (NULL); |
fc73a202 |
1593 | } |
265d4508 |
1594 | |
91c60b57 |
1595 | if (myRaytraceInitStatus != OpenGl_RT_NONE) |
fc73a202 |
1596 | { |
91c60b57 |
1597 | return myRaytraceInitStatus == OpenGl_RT_INIT; |
fc73a202 |
1598 | } |
265d4508 |
1599 | |
fc73a202 |
1600 | if (myRaytraceFBO1.IsNull()) |
1601 | { |
189f85a3 |
1602 | myRaytraceFBO1 = new OpenGl_FrameBuffer (GL_RGBA32F); |
fc73a202 |
1603 | } |
265d4508 |
1604 | |
fc73a202 |
1605 | if (myRaytraceFBO2.IsNull()) |
1606 | { |
189f85a3 |
1607 | myRaytraceFBO2 = new OpenGl_FrameBuffer (GL_RGBA32F); |
fc73a202 |
1608 | } |
265d4508 |
1609 | |
fc73a202 |
1610 | const GLfloat aVertices[] = { -1.f, -1.f, 0.f, |
1611 | -1.f, 1.f, 0.f, |
1612 | 1.f, 1.f, 0.f, |
1613 | 1.f, 1.f, 0.f, |
1614 | 1.f, -1.f, 0.f, |
1615 | -1.f, -1.f, 0.f }; |
265d4508 |
1616 | |
91c60b57 |
1617 | myRaytraceScreenQuad.Init (theGlContext, 3, 6, aVertices); |
265d4508 |
1618 | |
91c60b57 |
1619 | myRaytraceInitStatus = OpenGl_RT_INIT; // initialized in normal way |
ca3c13d1 |
1620 | |
fc73a202 |
1621 | return Standard_True; |
1622 | } |
265d4508 |
1623 | |
fc73a202 |
1624 | // ======================================================================= |
189f85a3 |
1625 | // function : nullifyResource |
fc73a202 |
1626 | // purpose : |
1627 | // ======================================================================= |
189f85a3 |
1628 | inline void nullifyResource (const Handle(OpenGl_Context)& theGlContext, |
fc73a202 |
1629 | Handle(OpenGl_Resource)& theResource) |
1630 | { |
1631 | if (!theResource.IsNull()) |
1632 | { |
91c60b57 |
1633 | theResource->Release (theGlContext.operator->()); |
fc73a202 |
1634 | theResource.Nullify(); |
1635 | } |
1636 | } |
265d4508 |
1637 | |
fc73a202 |
1638 | // ======================================================================= |
189f85a3 |
1639 | // function : releaseRaytraceResources |
fc73a202 |
1640 | // purpose : Releases OpenGL/GLSL shader programs |
1641 | // ======================================================================= |
91c60b57 |
1642 | void OpenGl_View::releaseRaytraceResources (const Handle(OpenGl_Context)& theGlContext) |
fc73a202 |
1643 | { |
189f85a3 |
1644 | nullifyResource (theGlContext, myOpenGlFBO); |
1645 | nullifyResource (theGlContext, myRaytraceFBO1); |
1646 | nullifyResource (theGlContext, myRaytraceFBO2); |
265d4508 |
1647 | |
189f85a3 |
1648 | nullifyResource (theGlContext, myRaytraceShader); |
1649 | nullifyResource (theGlContext, myPostFSAAShader); |
265d4508 |
1650 | |
189f85a3 |
1651 | nullifyResource (theGlContext, myRaytraceProgram); |
1652 | nullifyResource (theGlContext, myPostFSAAProgram); |
1653 | nullifyResource (theGlContext, myOutImageProgram); |
265d4508 |
1654 | |
189f85a3 |
1655 | nullifyResource (theGlContext, mySceneNodeInfoTexture); |
1656 | nullifyResource (theGlContext, mySceneMinPointTexture); |
1657 | nullifyResource (theGlContext, mySceneMaxPointTexture); |
265d4508 |
1658 | |
189f85a3 |
1659 | nullifyResource (theGlContext, myGeometryVertexTexture); |
1660 | nullifyResource (theGlContext, myGeometryNormalTexture); |
1661 | nullifyResource (theGlContext, myGeometryTexCrdTexture); |
1662 | nullifyResource (theGlContext, myGeometryTriangTexture); |
1663 | nullifyResource (theGlContext, mySceneTransformTexture); |
265d4508 |
1664 | |
189f85a3 |
1665 | nullifyResource (theGlContext, myRaytraceLightSrcTexture); |
1666 | nullifyResource (theGlContext, myRaytraceMaterialTexture); |
265d4508 |
1667 | |
fc73a202 |
1668 | if (myRaytraceScreenQuad.IsValid()) |
91c60b57 |
1669 | myRaytraceScreenQuad.Release (theGlContext.operator->()); |
1670 | } |
1671 | |
1672 | // ======================================================================= |
189f85a3 |
1673 | // function : resizeRaytraceBuffers |
91c60b57 |
1674 | // purpose : Resizes OpenGL frame buffers |
1675 | // ======================================================================= |
1676 | Standard_Boolean OpenGl_View::resizeRaytraceBuffers (const Standard_Integer theSizeX, |
1677 | const Standard_Integer theSizeY, |
1678 | const Handle(OpenGl_Context)& theGlContext) |
1679 | { |
1680 | if (myRaytraceFBO1->GetVPSizeX() != theSizeX |
1681 | || myRaytraceFBO1->GetVPSizeY() != theSizeY) |
1682 | { |
1683 | myRaytraceFBO1->Init (theGlContext, theSizeX, theSizeY); |
1684 | myRaytraceFBO2->Init (theGlContext, theSizeX, theSizeY); |
1685 | } |
1686 | |
1687 | return Standard_True; |
1688 | } |
1689 | |
1690 | // ======================================================================= |
189f85a3 |
1691 | // function : updateCamera |
91c60b57 |
1692 | // purpose : Generates viewing rays for corners of screen quad |
1693 | // ======================================================================= |
1694 | void OpenGl_View::updateCamera (const OpenGl_Mat4& theOrientation, |
1695 | const OpenGl_Mat4& theViewMapping, |
1696 | OpenGl_Vec3* theOrigins, |
1697 | OpenGl_Vec3* theDirects, |
1698 | OpenGl_Mat4& theUnview) |
1699 | { |
1700 | // compute inverse model-view-projection matrix |
1701 | (theViewMapping * theOrientation).Inverted (theUnview); |
1702 | |
1703 | Standard_Integer aOriginIndex = 0; |
1704 | Standard_Integer aDirectIndex = 0; |
1705 | |
1706 | for (Standard_Integer aY = -1; aY <= 1; aY += 2) |
1707 | { |
1708 | for (Standard_Integer aX = -1; aX <= 1; aX += 2) |
1709 | { |
1710 | OpenGl_Vec4 aOrigin (GLfloat(aX), |
1711 | GLfloat(aY), |
1712 | -1.0f, |
1713 | 1.0f); |
1714 | |
1715 | aOrigin = theUnview * aOrigin; |
1716 | |
1717 | aOrigin.x() = aOrigin.x() / aOrigin.w(); |
1718 | aOrigin.y() = aOrigin.y() / aOrigin.w(); |
1719 | aOrigin.z() = aOrigin.z() / aOrigin.w(); |
1720 | |
1721 | OpenGl_Vec4 aDirect (GLfloat(aX), |
1722 | GLfloat(aY), |
1723 | 1.0f, |
1724 | 1.0f); |
1725 | |
1726 | aDirect = theUnview * aDirect; |
1727 | |
1728 | aDirect.x() = aDirect.x() / aDirect.w(); |
1729 | aDirect.y() = aDirect.y() / aDirect.w(); |
1730 | aDirect.z() = aDirect.z() / aDirect.w(); |
1731 | |
1732 | aDirect = aDirect - aOrigin; |
1733 | |
1734 | GLdouble aInvLen = 1.0 / sqrt (aDirect.x() * aDirect.x() + |
1735 | aDirect.y() * aDirect.y() + |
1736 | aDirect.z() * aDirect.z()); |
1737 | |
1738 | theOrigins[aOriginIndex++] = OpenGl_Vec3 (static_cast<GLfloat> (aOrigin.x()), |
1739 | static_cast<GLfloat> (aOrigin.y()), |
1740 | static_cast<GLfloat> (aOrigin.z())); |
1741 | |
1742 | theDirects[aDirectIndex++] = OpenGl_Vec3 (static_cast<GLfloat> (aDirect.x() * aInvLen), |
1743 | static_cast<GLfloat> (aDirect.y() * aInvLen), |
1744 | static_cast<GLfloat> (aDirect.z() * aInvLen)); |
1745 | } |
1746 | } |
fc73a202 |
1747 | } |
265d4508 |
1748 | |
fc73a202 |
1749 | // ======================================================================= |
189f85a3 |
1750 | // function : uploadRaytraceData |
fc73a202 |
1751 | // purpose : Uploads ray-trace data to the GPU |
1752 | // ======================================================================= |
91c60b57 |
1753 | Standard_Boolean OpenGl_View::uploadRaytraceData (const Handle(OpenGl_Context)& theGlContext) |
fc73a202 |
1754 | { |
91c60b57 |
1755 | if (!theGlContext->IsGlGreaterEqual (3, 1)) |
fc73a202 |
1756 | { |
265d4508 |
1757 | #ifdef RAY_TRACE_PRINT_INFO |
fc73a202 |
1758 | std::cout << "Error: OpenGL version is less than 3.1" << std::endl; |
265d4508 |
1759 | #endif |
fc73a202 |
1760 | return Standard_False; |
e276548b |
1761 | } |
1762 | |
189f85a3 |
1763 | myAccumFrames = 0; // accumulation should be restarted |
1764 | |
25ef750e |
1765 | ///////////////////////////////////////////////////////////////////////////// |
1766 | // Prepare OpenGL textures |
1767 | |
91c60b57 |
1768 | if (theGlContext->arbTexBindless != NULL) |
25ef750e |
1769 | { |
1770 | // If OpenGL driver supports bindless textures we need |
1771 | // to get unique 64- bit handles for using on the GPU |
91c60b57 |
1772 | if (!myRaytraceGeometry.UpdateTextureHandles (theGlContext)) |
25ef750e |
1773 | { |
1774 | #ifdef RAY_TRACE_PRINT_INFO |
1775 | std::cout << "Error: Failed to get OpenGL texture handles" << std::endl; |
1776 | #endif |
1777 | return Standard_False; |
1778 | } |
1779 | } |
1780 | |
265d4508 |
1781 | ///////////////////////////////////////////////////////////////////////////// |
e2da917a |
1782 | // Create OpenGL BVH buffers |
265d4508 |
1783 | |
e2da917a |
1784 | if (mySceneNodeInfoTexture.IsNull()) // create scene BVH buffers |
e276548b |
1785 | { |
e2da917a |
1786 | mySceneNodeInfoTexture = new OpenGl_TextureBufferArb; |
1787 | mySceneMinPointTexture = new OpenGl_TextureBufferArb; |
1788 | mySceneMaxPointTexture = new OpenGl_TextureBufferArb; |
84c71f29 |
1789 | mySceneTransformTexture = new OpenGl_TextureBufferArb; |
265d4508 |
1790 | |
91c60b57 |
1791 | if (!mySceneNodeInfoTexture->Create (theGlContext) |
1792 | || !mySceneMinPointTexture->Create (theGlContext) |
1793 | || !mySceneMaxPointTexture->Create (theGlContext) |
1794 | || !mySceneTransformTexture->Create (theGlContext)) |
e276548b |
1795 | { |
fc73a202 |
1796 | #ifdef RAY_TRACE_PRINT_INFO |
e2da917a |
1797 | std::cout << "Error: Failed to create scene BVH buffers" << std::endl; |
fc73a202 |
1798 | #endif |
1799 | return Standard_False; |
1800 | } |
1801 | } |
5322131b |
1802 | |
e2da917a |
1803 | if (myGeometryVertexTexture.IsNull()) // create geometry buffers |
265d4508 |
1804 | { |
fc73a202 |
1805 | myGeometryVertexTexture = new OpenGl_TextureBufferArb; |
1806 | myGeometryNormalTexture = new OpenGl_TextureBufferArb; |
25ef750e |
1807 | myGeometryTexCrdTexture = new OpenGl_TextureBufferArb; |
fc73a202 |
1808 | myGeometryTriangTexture = new OpenGl_TextureBufferArb; |
e276548b |
1809 | |
91c60b57 |
1810 | if (!myGeometryVertexTexture->Create (theGlContext) |
1811 | || !myGeometryNormalTexture->Create (theGlContext) |
1812 | || !myGeometryTexCrdTexture->Create (theGlContext) |
1813 | || !myGeometryTriangTexture->Create (theGlContext)) |
fc73a202 |
1814 | { |
1815 | #ifdef RAY_TRACE_PRINT_INFO |
1816 | std::cout << "Error: Failed to create buffers for triangulation data" << std::endl; |
1817 | #endif |
1818 | return Standard_False; |
1819 | } |
265d4508 |
1820 | } |
5322131b |
1821 | |
e2da917a |
1822 | if (myRaytraceMaterialTexture.IsNull()) // create material buffer |
fc73a202 |
1823 | { |
1824 | myRaytraceMaterialTexture = new OpenGl_TextureBufferArb; |
e276548b |
1825 | |
91c60b57 |
1826 | if (!myRaytraceMaterialTexture->Create (theGlContext)) |
fc73a202 |
1827 | { |
1828 | #ifdef RAY_TRACE_PRINT_INFO |
1829 | std::cout << "Error: Failed to create buffers for material data" << std::endl; |
e276548b |
1830 | #endif |
fc73a202 |
1831 | return Standard_False; |
1832 | } |
1833 | } |
e2da917a |
1834 | |
84c71f29 |
1835 | ///////////////////////////////////////////////////////////////////////////// |
1836 | // Write transform buffer |
1837 | |
1838 | BVH_Mat4f* aNodeTransforms = new BVH_Mat4f[myRaytraceGeometry.Size()]; |
84c71f29 |
1839 | |
e2da917a |
1840 | bool aResult = true; |
1841 | |
84c71f29 |
1842 | for (Standard_Integer anElemIndex = 0; anElemIndex < myRaytraceGeometry.Size(); ++anElemIndex) |
1843 | { |
1844 | OpenGl_TriangleSet* aTriangleSet = dynamic_cast<OpenGl_TriangleSet*> ( |
1845 | myRaytraceGeometry.Objects().ChangeValue (anElemIndex).operator->()); |
1846 | |
1847 | const BVH_Transform<Standard_ShortReal, 4>* aTransform = |
1848 | dynamic_cast<const BVH_Transform<Standard_ShortReal, 4>* > (aTriangleSet->Properties().operator->()); |
1849 | |
1850 | Standard_ASSERT_RETURN (aTransform != NULL, |
1851 | "OpenGl_TriangleSet does not contain transform", Standard_False); |
1852 | |
1853 | aNodeTransforms[anElemIndex] = aTransform->Inversed(); |
84c71f29 |
1854 | } |
1855 | |
91c60b57 |
1856 | aResult &= mySceneTransformTexture->Init (theGlContext, 4, |
84c71f29 |
1857 | myRaytraceGeometry.Size() * 4, reinterpret_cast<const GLfloat*> (aNodeTransforms)); |
1858 | |
25ef750e |
1859 | delete [] aNodeTransforms; |
84c71f29 |
1860 | |
1861 | ///////////////////////////////////////////////////////////////////////////// |
bc8c79bb |
1862 | // Write geometry and bottom-level BVH buffers |
84c71f29 |
1863 | |
fc73a202 |
1864 | Standard_Size aTotalVerticesNb = 0; |
1865 | Standard_Size aTotalElementsNb = 0; |
1866 | Standard_Size aTotalBVHNodesNb = 0; |
265d4508 |
1867 | |
fc73a202 |
1868 | for (Standard_Integer anElemIndex = 0; anElemIndex < myRaytraceGeometry.Size(); ++anElemIndex) |
1869 | { |
1870 | OpenGl_TriangleSet* aTriangleSet = dynamic_cast<OpenGl_TriangleSet*> ( |
1871 | myRaytraceGeometry.Objects().ChangeValue (anElemIndex).operator->()); |
265d4508 |
1872 | |
fc73a202 |
1873 | Standard_ASSERT_RETURN (aTriangleSet != NULL, |
1874 | "Error: Failed to get triangulation of OpenGL element", Standard_False); |
1875 | |
1876 | aTotalVerticesNb += aTriangleSet->Vertices.size(); |
1877 | aTotalElementsNb += aTriangleSet->Elements.size(); |
e276548b |
1878 | |
fc73a202 |
1879 | Standard_ASSERT_RETURN (!aTriangleSet->BVH().IsNull(), |
1880 | "Error: Failed to get bottom-level BVH of OpenGL element", Standard_False); |
265d4508 |
1881 | |
fc73a202 |
1882 | aTotalBVHNodesNb += aTriangleSet->BVH()->NodeInfoBuffer().size(); |
1883 | } |
e276548b |
1884 | |
e2da917a |
1885 | aTotalBVHNodesNb += myRaytraceGeometry.BVH()->NodeInfoBuffer().size(); |
1886 | |
fc73a202 |
1887 | if (aTotalBVHNodesNb != 0) |
e276548b |
1888 | { |
e2da917a |
1889 | aResult &= mySceneNodeInfoTexture->Init ( |
91c60b57 |
1890 | theGlContext, 4, GLsizei (aTotalBVHNodesNb), static_cast<const GLuint*> (NULL)); |
e2da917a |
1891 | aResult &= mySceneMinPointTexture->Init ( |
91c60b57 |
1892 | theGlContext, 3, GLsizei (aTotalBVHNodesNb), static_cast<const GLfloat*> (NULL)); |
e2da917a |
1893 | aResult &= mySceneMaxPointTexture->Init ( |
91c60b57 |
1894 | theGlContext, 3, GLsizei (aTotalBVHNodesNb), static_cast<const GLfloat*> (NULL)); |
fc73a202 |
1895 | } |
265d4508 |
1896 | |
fc73a202 |
1897 | if (!aResult) |
1898 | { |
1899 | #ifdef RAY_TRACE_PRINT_INFO |
1900 | std::cout << "Error: Failed to upload buffers for bottom-level scene BVH" << std::endl; |
1901 | #endif |
1902 | return Standard_False; |
1903 | } |
e276548b |
1904 | |
fc73a202 |
1905 | if (aTotalElementsNb != 0) |
1906 | { |
25ef750e |
1907 | aResult &= myGeometryTriangTexture->Init ( |
91c60b57 |
1908 | theGlContext, 4, GLsizei (aTotalElementsNb), static_cast<const GLuint*> (NULL)); |
fc73a202 |
1909 | } |
265d4508 |
1910 | |
fc73a202 |
1911 | if (aTotalVerticesNb != 0) |
1912 | { |
25ef750e |
1913 | aResult &= myGeometryVertexTexture->Init ( |
91c60b57 |
1914 | theGlContext, 3, GLsizei (aTotalVerticesNb), static_cast<const GLfloat*> (NULL)); |
25ef750e |
1915 | aResult &= myGeometryNormalTexture->Init ( |
91c60b57 |
1916 | theGlContext, 3, GLsizei (aTotalVerticesNb), static_cast<const GLfloat*> (NULL)); |
25ef750e |
1917 | aResult &= myGeometryTexCrdTexture->Init ( |
91c60b57 |
1918 | theGlContext, 2, GLsizei (aTotalVerticesNb), static_cast<const GLfloat*> (NULL)); |
fc73a202 |
1919 | } |
265d4508 |
1920 | |
fc73a202 |
1921 | if (!aResult) |
1922 | { |
1923 | #ifdef RAY_TRACE_PRINT_INFO |
1924 | std::cout << "Error: Failed to upload buffers for scene geometry" << std::endl; |
1925 | #endif |
1926 | return Standard_False; |
1927 | } |
265d4508 |
1928 | |
e2da917a |
1929 | const NCollection_Handle<BVH_Tree<Standard_ShortReal, 3> >& aBVH = myRaytraceGeometry.BVH(); |
91c60b57 |
1930 | |
1931 | if (aBVH->Length() > 0) |
1e99558f |
1932 | { |
91c60b57 |
1933 | aResult &= mySceneNodeInfoTexture->SubData (theGlContext, 0, aBVH->Length(), |
1e99558f |
1934 | reinterpret_cast<const GLuint*> (&aBVH->NodeInfoBuffer().front())); |
91c60b57 |
1935 | aResult &= mySceneMinPointTexture->SubData (theGlContext, 0, aBVH->Length(), |
1e99558f |
1936 | reinterpret_cast<const GLfloat*> (&aBVH->MinPointBuffer().front())); |
91c60b57 |
1937 | aResult &= mySceneMaxPointTexture->SubData (theGlContext, 0, aBVH->Length(), |
1e99558f |
1938 | reinterpret_cast<const GLfloat*> (&aBVH->MaxPointBuffer().front())); |
1939 | } |
e2da917a |
1940 | |
fc73a202 |
1941 | for (Standard_Integer aNodeIdx = 0; aNodeIdx < aBVH->Length(); ++aNodeIdx) |
1942 | { |
1943 | if (!aBVH->IsOuter (aNodeIdx)) |
1944 | continue; |
265d4508 |
1945 | |
fc73a202 |
1946 | OpenGl_TriangleSet* aTriangleSet = myRaytraceGeometry.TriangleSet (aNodeIdx); |
e276548b |
1947 | |
fc73a202 |
1948 | Standard_ASSERT_RETURN (aTriangleSet != NULL, |
1949 | "Error: Failed to get triangulation of OpenGL element", Standard_False); |
e276548b |
1950 | |
e2da917a |
1951 | Standard_Integer aBVHOffset = myRaytraceGeometry.AccelerationOffset (aNodeIdx); |
e276548b |
1952 | |
fc73a202 |
1953 | Standard_ASSERT_RETURN (aBVHOffset != OpenGl_RaytraceGeometry::INVALID_OFFSET, |
1954 | "Error: Failed to get offset for bottom-level BVH", Standard_False); |
e276548b |
1955 | |
e2da917a |
1956 | const Standard_Integer aBvhBuffersSize = aTriangleSet->BVH()->Length(); |
265d4508 |
1957 | |
e2da917a |
1958 | if (aBvhBuffersSize != 0) |
fc73a202 |
1959 | { |
91c60b57 |
1960 | aResult &= mySceneNodeInfoTexture->SubData (theGlContext, aBVHOffset, aBvhBuffersSize, |
1961 | reinterpret_cast<const GLuint*> (&aTriangleSet->BVH()->NodeInfoBuffer().front())); |
1962 | aResult &= mySceneMinPointTexture->SubData (theGlContext, aBVHOffset, aBvhBuffersSize, |
1963 | reinterpret_cast<const GLfloat*> (&aTriangleSet->BVH()->MinPointBuffer().front())); |
1964 | aResult &= mySceneMaxPointTexture->SubData (theGlContext, aBVHOffset, aBvhBuffersSize, |
1965 | reinterpret_cast<const GLfloat*> (&aTriangleSet->BVH()->MaxPointBuffer().front())); |
1966 | |
fc73a202 |
1967 | if (!aResult) |
e276548b |
1968 | { |
fc73a202 |
1969 | #ifdef RAY_TRACE_PRINT_INFO |
1970 | std::cout << "Error: Failed to upload buffers for bottom-level scene BVHs" << std::endl; |
1971 | #endif |
e276548b |
1972 | return Standard_False; |
1973 | } |
1974 | } |
1975 | |
fc73a202 |
1976 | const Standard_Integer aVerticesOffset = myRaytraceGeometry.VerticesOffset (aNodeIdx); |
265d4508 |
1977 | |
fc73a202 |
1978 | Standard_ASSERT_RETURN (aVerticesOffset != OpenGl_RaytraceGeometry::INVALID_OFFSET, |
1979 | "Error: Failed to get offset for triangulation vertices of OpenGL element", Standard_False); |
265d4508 |
1980 | |
fc73a202 |
1981 | if (!aTriangleSet->Vertices.empty()) |
1982 | { |
91c60b57 |
1983 | aResult &= myGeometryNormalTexture->SubData (theGlContext, aVerticesOffset, |
1984 | GLsizei (aTriangleSet->Normals.size()), reinterpret_cast<const GLfloat*> (&aTriangleSet->Normals.front())); |
1985 | aResult &= myGeometryTexCrdTexture->SubData (theGlContext, aVerticesOffset, |
1986 | GLsizei (aTriangleSet->TexCrds.size()), reinterpret_cast<const GLfloat*> (&aTriangleSet->TexCrds.front())); |
1987 | aResult &= myGeometryVertexTexture->SubData (theGlContext, aVerticesOffset, |
1988 | GLsizei (aTriangleSet->Vertices.size()), reinterpret_cast<const GLfloat*> (&aTriangleSet->Vertices.front())); |
fc73a202 |
1989 | } |
e276548b |
1990 | |
fc73a202 |
1991 | const Standard_Integer anElementsOffset = myRaytraceGeometry.ElementsOffset (aNodeIdx); |
265d4508 |
1992 | |
fc73a202 |
1993 | Standard_ASSERT_RETURN (anElementsOffset != OpenGl_RaytraceGeometry::INVALID_OFFSET, |
1994 | "Error: Failed to get offset for triangulation elements of OpenGL element", Standard_False); |
e276548b |
1995 | |
fc73a202 |
1996 | if (!aTriangleSet->Elements.empty()) |
e276548b |
1997 | { |
91c60b57 |
1998 | aResult &= myGeometryTriangTexture->SubData (theGlContext, anElementsOffset, GLsizei (aTriangleSet->Elements.size()), |
5cff985a |
1999 | reinterpret_cast<const GLuint*> (&aTriangleSet->Elements.front())); |
e276548b |
2000 | } |
265d4508 |
2001 | |
fc73a202 |
2002 | if (!aResult) |
2003 | { |
2004 | #ifdef RAY_TRACE_PRINT_INFO |
2005 | std::cout << "Error: Failed to upload triangulation buffers for OpenGL element" << std::endl; |
e276548b |
2006 | #endif |
fc73a202 |
2007 | return Standard_False; |
2008 | } |
e276548b |
2009 | } |
e276548b |
2010 | |
25ef750e |
2011 | ///////////////////////////////////////////////////////////////////////////// |
2012 | // Write material buffer |
2013 | |
fc73a202 |
2014 | if (myRaytraceGeometry.Materials.size() != 0) |
2015 | { |
91c60b57 |
2016 | aResult &= myRaytraceMaterialTexture->Init (theGlContext, 4, |
189f85a3 |
2017 | GLsizei (myRaytraceGeometry.Materials.size() * 18), myRaytraceGeometry.Materials.front().Packed()); |
25ef750e |
2018 | |
fc73a202 |
2019 | if (!aResult) |
2020 | { |
2021 | #ifdef RAY_TRACE_PRINT_INFO |
2022 | std::cout << "Error: Failed to upload material buffer" << std::endl; |
2023 | #endif |
2024 | return Standard_False; |
2025 | } |
2026 | } |
e276548b |
2027 | |
fc73a202 |
2028 | myIsRaytraceDataValid = myRaytraceGeometry.Objects().Size() != 0; |
e276548b |
2029 | |
fc73a202 |
2030 | #ifdef RAY_TRACE_PRINT_INFO |
e276548b |
2031 | |
fc73a202 |
2032 | Standard_ShortReal aMemUsed = 0.f; |
e276548b |
2033 | |
fc73a202 |
2034 | for (Standard_Integer anElemIdx = 0; anElemIdx < myRaytraceGeometry.Size(); ++anElemIdx) |
2035 | { |
2036 | OpenGl_TriangleSet* aTriangleSet = dynamic_cast<OpenGl_TriangleSet*> ( |
2037 | myRaytraceGeometry.Objects().ChangeValue (anElemIdx).operator->()); |
e276548b |
2038 | |
fc73a202 |
2039 | aMemUsed += static_cast<Standard_ShortReal> ( |
25ef750e |
2040 | aTriangleSet->Vertices.size() * sizeof (BVH_Vec3f)); |
fc73a202 |
2041 | aMemUsed += static_cast<Standard_ShortReal> ( |
25ef750e |
2042 | aTriangleSet->Normals.size() * sizeof (BVH_Vec3f)); |
2043 | aMemUsed += static_cast<Standard_ShortReal> ( |
2044 | aTriangleSet->TexCrds.size() * sizeof (BVH_Vec2f)); |
fc73a202 |
2045 | aMemUsed += static_cast<Standard_ShortReal> ( |
2046 | aTriangleSet->Elements.size() * sizeof (BVH_Vec4i)); |
e276548b |
2047 | |
fc73a202 |
2048 | aMemUsed += static_cast<Standard_ShortReal> ( |
2049 | aTriangleSet->BVH()->NodeInfoBuffer().size() * sizeof (BVH_Vec4i)); |
2050 | aMemUsed += static_cast<Standard_ShortReal> ( |
25ef750e |
2051 | aTriangleSet->BVH()->MinPointBuffer().size() * sizeof (BVH_Vec3f)); |
fc73a202 |
2052 | aMemUsed += static_cast<Standard_ShortReal> ( |
25ef750e |
2053 | aTriangleSet->BVH()->MaxPointBuffer().size() * sizeof (BVH_Vec3f)); |
fc73a202 |
2054 | } |
e276548b |
2055 | |
fc73a202 |
2056 | aMemUsed += static_cast<Standard_ShortReal> ( |
2057 | myRaytraceGeometry.BVH()->NodeInfoBuffer().size() * sizeof (BVH_Vec4i)); |
2058 | aMemUsed += static_cast<Standard_ShortReal> ( |
25ef750e |
2059 | myRaytraceGeometry.BVH()->MinPointBuffer().size() * sizeof (BVH_Vec3f)); |
fc73a202 |
2060 | aMemUsed += static_cast<Standard_ShortReal> ( |
25ef750e |
2061 | myRaytraceGeometry.BVH()->MaxPointBuffer().size() * sizeof (BVH_Vec3f)); |
e276548b |
2062 | |
fc73a202 |
2063 | std::cout << "GPU Memory Used (MB): ~" << aMemUsed / 1048576 << std::endl; |
e276548b |
2064 | |
fc73a202 |
2065 | #endif |
e276548b |
2066 | |
fc73a202 |
2067 | return aResult; |
2068 | } |
e276548b |
2069 | |
fc73a202 |
2070 | // ======================================================================= |
189f85a3 |
2071 | // function : updateRaytraceLightSources |
91c60b57 |
2072 | // purpose : Updates 3D scene light sources for ray-tracing |
fc73a202 |
2073 | // ======================================================================= |
91c60b57 |
2074 | Standard_Boolean OpenGl_View::updateRaytraceLightSources (const OpenGl_Mat4& theInvModelView, const Handle(OpenGl_Context)& theGlContext) |
fc73a202 |
2075 | { |
91c60b57 |
2076 | myRaytraceGeometry.Sources.clear(); |
2077 | |
2078 | myRaytraceGeometry.Ambient = BVH_Vec4f (0.0f, 0.0f, 0.0f, 0.0f); |
2079 | |
189f85a3 |
2080 | for (OpenGl_ListOfLight::Iterator aLightIter (myLights); aLightIter.More(); aLightIter.Next()) |
91c60b57 |
2081 | { |
189f85a3 |
2082 | const OpenGl_Light& aLight = aLightIter.Value(); |
91c60b57 |
2083 | |
2084 | if (aLight.Type == Visual3d_TOLS_AMBIENT) |
2085 | { |
189f85a3 |
2086 | myRaytraceGeometry.Ambient += BVH_Vec4f (aLight.Color.r() * aLight.Intensity, |
2087 | aLight.Color.g() * aLight.Intensity, |
2088 | aLight.Color.b() * aLight.Intensity, |
91c60b57 |
2089 | 0.0f); |
2090 | continue; |
2091 | } |
2092 | |
189f85a3 |
2093 | BVH_Vec4f aDiffuse (aLight.Color.r() * aLight.Intensity, |
2094 | aLight.Color.g() * aLight.Intensity, |
2095 | aLight.Color.b() * aLight.Intensity, |
91c60b57 |
2096 | 1.0f); |
2097 | |
2098 | BVH_Vec4f aPosition (-aLight.Direction.x(), |
2099 | -aLight.Direction.y(), |
2100 | -aLight.Direction.z(), |
2101 | 0.0f); |
2102 | |
2103 | if (aLight.Type != Visual3d_TOLS_DIRECTIONAL) |
2104 | { |
2105 | aPosition = BVH_Vec4f (aLight.Position.x(), |
2106 | aLight.Position.y(), |
2107 | aLight.Position.z(), |
2108 | 1.0f); |
189f85a3 |
2109 | |
2110 | // store smoothing radius in w-component |
2111 | aDiffuse.w() = Max (aLight.Smoothness, 0.f); |
2112 | } |
2113 | else |
2114 | { |
2115 | // store cosine of smoothing angle in w-component |
2116 | aDiffuse.w() = cosf (Min (Max (aLight.Smoothness, 0.f), static_cast<Standard_ShortReal> (M_PI / 2.0))); |
91c60b57 |
2117 | } |
2118 | |
2119 | if (aLight.IsHeadlight) |
2120 | { |
2121 | aPosition = theInvModelView * aPosition; |
2122 | } |
2123 | |
2124 | myRaytraceGeometry.Sources.push_back (OpenGl_RaytraceLight (aDiffuse, aPosition)); |
2125 | } |
2126 | |
2127 | if (myRaytraceLightSrcTexture.IsNull()) // create light source buffer |
2128 | { |
2129 | myRaytraceLightSrcTexture = new OpenGl_TextureBufferArb; |
2130 | |
2131 | if (!myRaytraceLightSrcTexture->Create (theGlContext)) |
2132 | { |
2133 | #ifdef RAY_TRACE_PRINT_INFO |
2134 | std::cout << "Error: Failed to create light source buffer" << std::endl; |
2135 | #endif |
2136 | return Standard_False; |
2137 | } |
2138 | } |
189f85a3 |
2139 | |
91c60b57 |
2140 | if (myRaytraceGeometry.Sources.size() != 0) |
fc73a202 |
2141 | { |
91c60b57 |
2142 | const GLfloat* aDataPtr = myRaytraceGeometry.Sources.front().Packed(); |
2143 | if (!myRaytraceLightSrcTexture->Init (theGlContext, 4, GLsizei (myRaytraceGeometry.Sources.size() * 2), aDataPtr)) |
2144 | { |
2145 | #ifdef RAY_TRACE_PRINT_INFO |
2146 | std::cout << "Error: Failed to upload light source buffer" << std::endl; |
2147 | #endif |
2148 | return Standard_False; |
2149 | } |
fc73a202 |
2150 | } |
e276548b |
2151 | |
fc73a202 |
2152 | return Standard_True; |
e276548b |
2153 | } |
2154 | |
2155 | // ======================================================================= |
189f85a3 |
2156 | // function : updateRaytraceEnvironmentMap |
91c60b57 |
2157 | // purpose : Updates environment map for ray-tracing |
e276548b |
2158 | // ======================================================================= |
91c60b57 |
2159 | Standard_Boolean OpenGl_View::updateRaytraceEnvironmentMap (const Handle(OpenGl_Context)& theGlContext) |
e276548b |
2160 | { |
91c60b57 |
2161 | Standard_Boolean aResult = Standard_True; |
e276548b |
2162 | |
91c60b57 |
2163 | if (!myToUpdateEnvironmentMap) |
e276548b |
2164 | { |
91c60b57 |
2165 | return aResult; |
2166 | } |
e276548b |
2167 | |
91c60b57 |
2168 | for (Standard_Integer anIdx = 0; anIdx < 2; ++anIdx) |
2169 | { |
2170 | const Handle(OpenGl_ShaderProgram)& aProgram = |
2171 | anIdx == 0 ? myRaytraceProgram : myPostFSAAProgram; |
fc73a202 |
2172 | |
91c60b57 |
2173 | if (!aProgram.IsNull()) |
2174 | { |
2175 | aResult &= theGlContext->BindProgram (aProgram); |
e276548b |
2176 | |
91c60b57 |
2177 | if (!myTextureEnv.IsNull() && mySurfaceDetail != Visual3d_TOD_NONE) |
2178 | { |
2179 | myTextureEnv->Bind (theGlContext, |
2180 | GL_TEXTURE0 + OpenGl_RT_EnvironmentMapTexture); |
b5ac8292 |
2181 | |
91c60b57 |
2182 | aResult &= aProgram->SetUniform (theGlContext, |
189f85a3 |
2183 | myUniformLocations[anIdx][OpenGl_RT_uSphereMapEnabled], 1); |
91c60b57 |
2184 | } |
2185 | else |
2186 | { |
2187 | aResult &= aProgram->SetUniform (theGlContext, |
189f85a3 |
2188 | myUniformLocations[anIdx][OpenGl_RT_uSphereMapEnabled], 0); |
91c60b57 |
2189 | } |
2190 | } |
2191 | } |
e276548b |
2192 | |
91c60b57 |
2193 | myToUpdateEnvironmentMap = Standard_False; |
e276548b |
2194 | |
91c60b57 |
2195 | theGlContext->BindProgram (NULL); |
fc73a202 |
2196 | |
91c60b57 |
2197 | return aResult; |
fc73a202 |
2198 | } |
2199 | |
25ef750e |
2200 | // ======================================================================= |
189f85a3 |
2201 | // function : setUniformState |
25ef750e |
2202 | // purpose : Sets uniform state for the given ray-tracing shader program |
2203 | // ======================================================================= |
91c60b57 |
2204 | Standard_Boolean OpenGl_View::setUniformState (const Graphic3d_CView& theCView, |
2205 | const OpenGl_Vec3* theOrigins, |
2206 | const OpenGl_Vec3* theDirects, |
2207 | const OpenGl_Mat4& theUnviewMat, |
2208 | const Standard_Integer theProgramId, |
2209 | const Handle(OpenGl_Context)& theGlContext) |
25ef750e |
2210 | { |
91c60b57 |
2211 | Handle(OpenGl_ShaderProgram)& theProgram = |
2212 | theProgramId == 0 ? myRaytraceProgram : myPostFSAAProgram; |
2213 | |
2214 | if (theProgram.IsNull()) |
25ef750e |
2215 | { |
2216 | return Standard_False; |
2217 | } |
2218 | |
91c60b57 |
2219 | const Standard_Integer aLightSourceBufferSize = |
2220 | static_cast<Standard_Integer> (myRaytraceGeometry.Sources.size()); |
2221 | |
25ef750e |
2222 | // Set camera state |
189f85a3 |
2223 | theProgram->SetUniform (theGlContext, |
91c60b57 |
2224 | myUniformLocations[theProgramId][OpenGl_RT_uOriginLB], theOrigins[0]); |
189f85a3 |
2225 | theProgram->SetUniform (theGlContext, |
91c60b57 |
2226 | myUniformLocations[theProgramId][OpenGl_RT_uOriginRB], theOrigins[1]); |
189f85a3 |
2227 | theProgram->SetUniform (theGlContext, |
91c60b57 |
2228 | myUniformLocations[theProgramId][OpenGl_RT_uOriginLT], theOrigins[2]); |
189f85a3 |
2229 | theProgram->SetUniform (theGlContext, |
91c60b57 |
2230 | myUniformLocations[theProgramId][OpenGl_RT_uOriginRT], theOrigins[3]); |
189f85a3 |
2231 | theProgram->SetUniform (theGlContext, |
91c60b57 |
2232 | myUniformLocations[theProgramId][OpenGl_RT_uDirectLB], theDirects[0]); |
189f85a3 |
2233 | theProgram->SetUniform (theGlContext, |
91c60b57 |
2234 | myUniformLocations[theProgramId][OpenGl_RT_uDirectRB], theDirects[1]); |
189f85a3 |
2235 | theProgram->SetUniform (theGlContext, |
91c60b57 |
2236 | myUniformLocations[theProgramId][OpenGl_RT_uDirectLT], theDirects[2]); |
189f85a3 |
2237 | theProgram->SetUniform (theGlContext, |
91c60b57 |
2238 | myUniformLocations[theProgramId][OpenGl_RT_uDirectRT], theDirects[3]); |
189f85a3 |
2239 | theProgram->SetUniform (theGlContext, |
91c60b57 |
2240 | myUniformLocations[theProgramId][OpenGl_RT_uUnviewMat], theUnviewMat); |
312a4043 |
2241 | |
25ef750e |
2242 | // Set scene parameters |
189f85a3 |
2243 | theProgram->SetUniform (theGlContext, |
91c60b57 |
2244 | myUniformLocations[theProgramId][OpenGl_RT_uSceneRad], myRaytraceSceneRadius); |
189f85a3 |
2245 | theProgram->SetUniform (theGlContext, |
91c60b57 |
2246 | myUniformLocations[theProgramId][OpenGl_RT_uSceneEps], myRaytraceSceneEpsilon); |
189f85a3 |
2247 | theProgram->SetUniform (theGlContext, |
91c60b57 |
2248 | myUniformLocations[theProgramId][OpenGl_RT_uLightCount], aLightSourceBufferSize); |
189f85a3 |
2249 | theProgram->SetUniform (theGlContext, |
91c60b57 |
2250 | myUniformLocations[theProgramId][OpenGl_RT_uLightAmbnt], myRaytraceGeometry.Ambient); |
2251 | |
2252 | // Set run-time rendering options |
189f85a3 |
2253 | theProgram->SetUniform (theGlContext, |
2254 | myUniformLocations[theProgramId][OpenGl_RT_uShadowsEnabled], theCView.RenderParams.IsShadowEnabled ? 1 : 0); |
2255 | theProgram->SetUniform (theGlContext, |
2256 | myUniformLocations[theProgramId][OpenGl_RT_uReflectEnabled], theCView.RenderParams.IsReflectionEnabled ? 1 : 0); |
25ef750e |
2257 | |
2258 | // Set array of 64-bit texture handles |
91c60b57 |
2259 | if (theGlContext->arbTexBindless != NULL && myRaytraceGeometry.HasTextures()) |
25ef750e |
2260 | { |
189f85a3 |
2261 | theProgram->SetUniform (theGlContext, myUniformLocations[theProgramId][OpenGl_RT_uTexSamplersArray], |
2262 | static_cast<GLsizei> (myRaytraceGeometry.TextureHandles().size()), &myRaytraceGeometry.TextureHandles()[0]); |
25ef750e |
2263 | } |
2264 | |
189f85a3 |
2265 | // Set background colors (only gradient background supported) |
2266 | if (myBgGradientArray != NULL) |
25ef750e |
2267 | { |
189f85a3 |
2268 | theProgram->SetUniform (theGlContext, |
2269 | myUniformLocations[theProgramId][OpenGl_RT_uBackColorTop], myBgGradientArray->GradientColor (0)); |
2270 | theProgram->SetUniform (theGlContext, |
2271 | myUniformLocations[theProgramId][OpenGl_RT_uBackColorBot], myBgGradientArray->GradientColor (1)); |
25ef750e |
2272 | } |
2273 | |
189f85a3 |
2274 | theProgram->SetUniform (theGlContext, |
2275 | myUniformLocations[theProgramId][OpenGl_RT_uSphereMapForBack], theCView.RenderParams.UseEnvironmentMapBackground ? 1 : 0); |
2276 | |
2277 | return Standard_True; |
25ef750e |
2278 | } |
2279 | |
91c60b57 |
2280 | // ======================================================================= |
189f85a3 |
2281 | // function : bindRaytraceTextures |
91c60b57 |
2282 | // purpose : Binds ray-trace textures to corresponding texture units |
2283 | // ======================================================================= |
2284 | void OpenGl_View::bindRaytraceTextures (const Handle(OpenGl_Context)& theGlContext) |
2285 | { |
2286 | mySceneMinPointTexture->BindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_SceneMinPointTexture); |
2287 | mySceneMaxPointTexture->BindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_SceneMaxPointTexture); |
2288 | mySceneNodeInfoTexture->BindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_SceneNodeInfoTexture); |
2289 | myGeometryVertexTexture->BindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_GeometryVertexTexture); |
2290 | myGeometryNormalTexture->BindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_GeometryNormalTexture); |
2291 | myGeometryTexCrdTexture->BindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_GeometryTexCrdTexture); |
2292 | myGeometryTriangTexture->BindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_GeometryTriangTexture); |
2293 | mySceneTransformTexture->BindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_SceneTransformTexture); |
2294 | myRaytraceMaterialTexture->BindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_RaytraceMaterialTexture); |
2295 | myRaytraceLightSrcTexture->BindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_RaytraceLightSrcTexture); |
2296 | |
2297 | if (!myOpenGlFBO.IsNull()) |
2298 | { |
2299 | myOpenGlFBO->ColorTexture()->Bind (theGlContext, GL_TEXTURE0 + OpenGl_RT_OpenGlColorTexture); |
2300 | myOpenGlFBO->DepthStencilTexture()->Bind (theGlContext, GL_TEXTURE0 + OpenGl_RT_OpenGlDepthTexture); |
2301 | } |
2302 | } |
2303 | |
2304 | // ======================================================================= |
189f85a3 |
2305 | // function : unbindRaytraceTextures |
91c60b57 |
2306 | // purpose : Unbinds ray-trace textures from corresponding texture units |
2307 | // ======================================================================= |
2308 | void OpenGl_View::unbindRaytraceTextures (const Handle(OpenGl_Context)& theGlContext) |
2309 | { |
2310 | mySceneMinPointTexture->UnbindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_SceneMinPointTexture); |
2311 | mySceneMaxPointTexture->UnbindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_SceneMaxPointTexture); |
2312 | mySceneNodeInfoTexture->UnbindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_SceneNodeInfoTexture); |
2313 | myGeometryVertexTexture->UnbindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_GeometryVertexTexture); |
2314 | myGeometryNormalTexture->UnbindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_GeometryNormalTexture); |
2315 | myGeometryTexCrdTexture->UnbindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_GeometryTexCrdTexture); |
2316 | myGeometryTriangTexture->UnbindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_GeometryTriangTexture); |
2317 | mySceneTransformTexture->UnbindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_SceneTransformTexture); |
2318 | myRaytraceMaterialTexture->UnbindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_RaytraceMaterialTexture); |
2319 | myRaytraceLightSrcTexture->UnbindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_RaytraceLightSrcTexture); |
2320 | |
2321 | if (!myOpenGlFBO.IsNull()) |
2322 | { |
2323 | myOpenGlFBO->ColorTexture()->Unbind (theGlContext, GL_TEXTURE0 + OpenGl_RT_OpenGlColorTexture); |
2324 | myOpenGlFBO->DepthStencilTexture()->Unbind (theGlContext, GL_TEXTURE0 + OpenGl_RT_OpenGlDepthTexture); |
2325 | } |
2326 | |
2327 | theGlContext->core15fwd->glActiveTexture (GL_TEXTURE0); |
2328 | } |
2329 | |
fc73a202 |
2330 | // ======================================================================= |
189f85a3 |
2331 | // function : runRaytraceShaders |
fc73a202 |
2332 | // purpose : Runs ray-tracing shader programs |
2333 | // ======================================================================= |
91c60b57 |
2334 | Standard_Boolean OpenGl_View::runRaytraceShaders (const Graphic3d_CView& theCView, |
2335 | const Standard_Integer theSizeX, |
2336 | const Standard_Integer theSizeY, |
2337 | const OpenGl_Vec3* theOrigins, |
2338 | const OpenGl_Vec3* theDirects, |
2339 | const OpenGl_Mat4& theUnviewMat, |
38a0206f |
2340 | OpenGl_FrameBuffer* theReadDrawFbo, |
91c60b57 |
2341 | const Handle(OpenGl_Context)& theGlContext) |
fc73a202 |
2342 | { |
91c60b57 |
2343 | bindRaytraceTextures (theGlContext); |
fc73a202 |
2344 | |
189f85a3 |
2345 | Handle(OpenGl_FrameBuffer) aRenderFramebuffer; |
2346 | Handle(OpenGl_FrameBuffer) anAccumFramebuffer; |
2347 | |
2348 | if (myRaytraceParameters.GlobalIllumination) // if path-tracing is used |
2349 | { |
2350 | for (int anIdx = 0; anIdx < 3; ++anIdx) |
2351 | { |
2352 | if (fabsf (theOrigins[anIdx].x() - myPreviousOrigins[anIdx].x()) > std::numeric_limits<Standard_ShortReal>::epsilon() |
2353 | || fabsf (theOrigins[anIdx].y() - myPreviousOrigins[anIdx].y()) > std::numeric_limits<Standard_ShortReal>::epsilon() |
2354 | || fabsf (theOrigins[anIdx].z() - myPreviousOrigins[anIdx].z()) > std::numeric_limits<Standard_ShortReal>::epsilon()) |
2355 | { |
2356 | myAccumFrames = 0; // camera has been moved |
2357 | } |
2358 | |
2359 | myPreviousOrigins[anIdx] = theOrigins[anIdx]; |
2360 | } |
2361 | |
2362 | aRenderFramebuffer = myAccumFrames % 2 ? myRaytraceFBO1 : myRaytraceFBO2; |
2363 | anAccumFramebuffer = myAccumFrames % 2 ? myRaytraceFBO2 : myRaytraceFBO1; |
2364 | |
2365 | anAccumFramebuffer->ColorTexture()->Bind ( |
2366 | theGlContext, GL_TEXTURE0 + OpenGl_RT_PrevAccumTexture); |
2367 | |
2368 | aRenderFramebuffer->BindBuffer (theGlContext); |
2369 | } |
2370 | else if (theCView.RenderParams.IsAntialiasingEnabled) // if 2-pass ray-tracing is used |
fc73a202 |
2371 | { |
91c60b57 |
2372 | myRaytraceFBO1->BindBuffer (theGlContext); |
2373 | |
fc73a202 |
2374 | glDisable (GL_BLEND); |
2375 | } |
2376 | |
91c60b57 |
2377 | Standard_Boolean aResult = theGlContext->BindProgram (myRaytraceProgram); |
fc73a202 |
2378 | |
91c60b57 |
2379 | aResult &= setUniformState (theCView, |
2380 | theOrigins, |
2381 | theDirects, |
2382 | theUnviewMat, |
2383 | 0, // ID of RT program |
2384 | theGlContext); |
fc73a202 |
2385 | |
189f85a3 |
2386 | if (myRaytraceParameters.GlobalIllumination) |
fc73a202 |
2387 | { |
189f85a3 |
2388 | // Set frame accumulation weight |
2389 | myRaytraceProgram->SetUniform (theGlContext, |
2390 | myUniformLocations[0][OpenGl_RT_uSampleWeight], 1.f / (myAccumFrames + 1)); |
2391 | |
2392 | // Set random number generator seed |
2393 | myRaytraceProgram->SetUniform (theGlContext, |
2394 | myUniformLocations[0][OpenGl_RT_uFrameRndSeed], static_cast<Standard_Integer> (myRNG.NextInt() >> 2)); |
fc73a202 |
2395 | } |
25ef750e |
2396 | |
189f85a3 |
2397 | theGlContext->core20fwd->glDrawArrays (GL_TRIANGLES, 0, 6); |
fc73a202 |
2398 | |
189f85a3 |
2399 | if (myRaytraceParameters.GlobalIllumination) |
2400 | { |
2401 | // Output accumulated image |
2402 | glDisable (GL_BLEND); |
a89742cf |
2403 | |
189f85a3 |
2404 | theGlContext->BindProgram (myOutImageProgram); |
fc73a202 |
2405 | |
189f85a3 |
2406 | if (theReadDrawFbo != NULL) |
2407 | { |
2408 | theReadDrawFbo->BindBuffer (theGlContext); |
2409 | } |
2410 | else |
2411 | { |
2412 | aRenderFramebuffer->UnbindBuffer (theGlContext); |
2413 | } |
fc73a202 |
2414 | |
189f85a3 |
2415 | aRenderFramebuffer->ColorTexture()->Bind ( |
2416 | theGlContext, GL_TEXTURE0 + OpenGl_RT_PrevAccumTexture); |
fc73a202 |
2417 | |
189f85a3 |
2418 | theGlContext->core20fwd->glDrawArrays (GL_TRIANGLES, 0, 6); |
fc73a202 |
2419 | |
189f85a3 |
2420 | ++myAccumFrames; |
2421 | } |
2422 | else if (theCView.RenderParams.IsAntialiasingEnabled) |
fc73a202 |
2423 | { |
189f85a3 |
2424 | myRaytraceFBO1->ColorTexture()->Bind (theGlContext, GL_TEXTURE0 + OpenGl_RT_FsaaInputTexture); |
2425 | |
2426 | aResult &= theGlContext->BindProgram (myPostFSAAProgram); |
2427 | |
2428 | aResult &= setUniformState (theCView, |
2429 | theOrigins, |
2430 | theDirects, |
2431 | theUnviewMat, |
2432 | 1, // ID of FSAA program |
2433 | theGlContext); |
2434 | |
91c60b57 |
2435 | // Perform multi-pass adaptive FSAA using ping-pong technique. |
2436 | // We use 'FLIPTRI' sampling pattern changing for every pixel |
2437 | // (3 additional samples per pixel, the 1st sample is already |
2438 | // available from initial ray-traced image). |
2439 | for (Standard_Integer anIt = 1; anIt < 4; ++anIt) |
50d0e1ce |
2440 | { |
91c60b57 |
2441 | GLfloat aOffsetX = 1.f / theSizeX; |
2442 | GLfloat aOffsetY = 1.f / theSizeY; |
50d0e1ce |
2443 | |
91c60b57 |
2444 | if (anIt == 1) |
2445 | { |
2446 | aOffsetX *= -0.55f; |
2447 | aOffsetY *= 0.55f; |
2448 | } |
2449 | else if (anIt == 2) |
2450 | { |
2451 | aOffsetX *= 0.00f; |
2452 | aOffsetY *= -0.55f; |
2453 | } |
2454 | else if (anIt == 3) |
2455 | { |
2456 | aOffsetX *= 0.55f; |
2457 | aOffsetY *= 0.00f; |
2458 | } |
fc73a202 |
2459 | |
91c60b57 |
2460 | aResult &= myPostFSAAProgram->SetUniform (theGlContext, |
2461 | myUniformLocations[1][OpenGl_RT_uSamples], anIt + 1); |
2462 | aResult &= myPostFSAAProgram->SetUniform (theGlContext, |
2463 | myUniformLocations[1][OpenGl_RT_uOffsetX], aOffsetX); |
2464 | aResult &= myPostFSAAProgram->SetUniform (theGlContext, |
2465 | myUniformLocations[1][OpenGl_RT_uOffsetY], aOffsetY); |
fc73a202 |
2466 | |
91c60b57 |
2467 | Handle(OpenGl_FrameBuffer)& aFramebuffer = anIt % 2 ? myRaytraceFBO2 : myRaytraceFBO1; |
fc73a202 |
2468 | |
91c60b57 |
2469 | if (anIt == 3) // disable FBO on last iteration |
2470 | { |
38a0206f |
2471 | if (theReadDrawFbo != NULL) |
189f85a3 |
2472 | { |
38a0206f |
2473 | theReadDrawFbo->BindBuffer (theGlContext); |
189f85a3 |
2474 | } |
2475 | else |
2476 | { |
2477 | aFramebuffer->UnbindBuffer (theGlContext); |
2478 | } |
91c60b57 |
2479 | } |
2480 | else |
2481 | { |
2482 | aFramebuffer->BindBuffer (theGlContext); |
2483 | } |
50d0e1ce |
2484 | |
91c60b57 |
2485 | theGlContext->core20fwd->glDrawArrays (GL_TRIANGLES, 0, 6); |
e276548b |
2486 | |
91c60b57 |
2487 | if (anIt != 3) // set input for the next pass |
2488 | { |
189f85a3 |
2489 | aFramebuffer->ColorTexture()->Bind (theGlContext, GL_TEXTURE0 + OpenGl_RT_FsaaInputTexture); |
91c60b57 |
2490 | } |
e276548b |
2491 | } |
2492 | } |
fc73a202 |
2493 | |
91c60b57 |
2494 | unbindRaytraceTextures (theGlContext); |
a89742cf |
2495 | |
91c60b57 |
2496 | theGlContext->BindProgram (NULL); |
fc73a202 |
2497 | |
91c60b57 |
2498 | return aResult; |
e276548b |
2499 | } |
2500 | |
2501 | // ======================================================================= |
189f85a3 |
2502 | // function : raytrace |
fc73a202 |
2503 | // purpose : Redraws the window using OpenGL/GLSL ray-tracing |
e276548b |
2504 | // ======================================================================= |
91c60b57 |
2505 | Standard_Boolean OpenGl_View::raytrace (const Graphic3d_CView& theCView, |
2506 | const Standard_Integer theSizeX, |
2507 | const Standard_Integer theSizeY, |
38a0206f |
2508 | OpenGl_FrameBuffer* theReadDrawFbo, |
91c60b57 |
2509 | const Handle(OpenGl_Context)& theGlContext) |
e276548b |
2510 | { |
91c60b57 |
2511 | if (!initRaytraceResources (theCView, theGlContext)) |
2512 | { |
e276548b |
2513 | return Standard_False; |
91c60b57 |
2514 | } |
2515 | |
2516 | if (!resizeRaytraceBuffers (theSizeX, theSizeY, theGlContext)) |
2517 | { |
2518 | return Standard_False; |
2519 | } |
e276548b |
2520 | |
91c60b57 |
2521 | if (!updateRaytraceEnvironmentMap (theGlContext)) |
2522 | { |
e276548b |
2523 | return Standard_False; |
91c60b57 |
2524 | } |
e276548b |
2525 | |
2526 | // Get model-view and projection matrices |
38a0206f |
2527 | OpenGl_Mat4 aOrientationMatrix = myCamera->OrientationMatrixF(); |
2528 | OpenGl_Mat4 aViewMappingMatrix = theGlContext->ProjectionState.Current(); |
e276548b |
2529 | |
38a0206f |
2530 | OpenGl_Mat4 aInverOrientMatrix; |
91c60b57 |
2531 | aOrientationMatrix.Inverted (aInverOrientMatrix); |
91c60b57 |
2532 | if (!updateRaytraceLightSources (aInverOrientMatrix, theGlContext)) |
2533 | { |
e276548b |
2534 | return Standard_False; |
91c60b57 |
2535 | } |
e276548b |
2536 | |
fc73a202 |
2537 | OpenGl_Vec3 aOrigins[4]; |
2538 | OpenGl_Vec3 aDirects[4]; |
25ef750e |
2539 | OpenGl_Mat4 anUnviewMat; |
e276548b |
2540 | |
91c60b57 |
2541 | updateCamera (aOrientationMatrix, |
fc73a202 |
2542 | aViewMappingMatrix, |
2543 | aOrigins, |
a89742cf |
2544 | aDirects, |
25ef750e |
2545 | anUnviewMat); |
e276548b |
2546 | |
189f85a3 |
2547 | glDisable (GL_BLEND); |
e276548b |
2548 | glDisable (GL_DEPTH_TEST); |
2549 | |
38a0206f |
2550 | if (theReadDrawFbo != NULL) |
a89742cf |
2551 | { |
38a0206f |
2552 | theReadDrawFbo->BindBuffer (theGlContext); |
a89742cf |
2553 | } |
2554 | |
c827ea3a |
2555 | // Generate ray-traced image |
e276548b |
2556 | if (myIsRaytraceDataValid) |
2557 | { |
189f85a3 |
2558 | myRaytraceScreenQuad.BindVertexAttrib (theGlContext, Graphic3d_TOA_POS); |
fc73a202 |
2559 | |
91c60b57 |
2560 | if (!myRaytraceGeometry.AcquireTextures (theGlContext)) |
25ef750e |
2561 | { |
91c60b57 |
2562 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION_ARB, GL_DEBUG_TYPE_ERROR_ARB, |
2563 | 0, GL_DEBUG_SEVERITY_MEDIUM_ARB, "Error: Failed to acquire OpenGL image textures"); |
25ef750e |
2564 | } |
2565 | |
91c60b57 |
2566 | Standard_Boolean aResult = runRaytraceShaders (theCView, |
2567 | theSizeX, |
2568 | theSizeY, |
2569 | aOrigins, |
2570 | aDirects, |
2571 | anUnviewMat, |
38a0206f |
2572 | theReadDrawFbo, |
91c60b57 |
2573 | theGlContext); |
fc73a202 |
2574 | |
91c60b57 |
2575 | if (!aResult) |
25ef750e |
2576 | { |
91c60b57 |
2577 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION_ARB, GL_DEBUG_TYPE_ERROR_ARB, |
2578 | 0, GL_DEBUG_SEVERITY_MEDIUM_ARB, "Error: Failed to execute ray-tracing shaders"); |
2579 | } |
25ef750e |
2580 | |
91c60b57 |
2581 | if (!myRaytraceGeometry.ReleaseTextures (theGlContext)) |
2582 | { |
2583 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION_ARB, GL_DEBUG_TYPE_ERROR_ARB, |
2584 | 0, GL_DEBUG_SEVERITY_MEDIUM_ARB, "Error: Failed to release OpenGL image textures"); |
25ef750e |
2585 | } |
2586 | |
189f85a3 |
2587 | myRaytraceScreenQuad.UnbindVertexAttrib (theGlContext, Graphic3d_TOA_POS); |
e276548b |
2588 | } |
2589 | |
91c60b57 |
2590 | glDisable (GL_BLEND); |
2591 | glEnable (GL_DEPTH_TEST); |
a89742cf |
2592 | |
e276548b |
2593 | return Standard_True; |
f8ae3605 |
2594 | } |