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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 <OpenGl_View.hxx> |
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17 | |
c357e426 |
18 | #include <Graphic3d_TextureParams.hxx> |
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19 | #include <OpenGl_PrimitiveArray.hxx> |
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20 | #include <OpenGl_VertexBuffer.hxx> |
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21 | #include <OSD_Protection.hxx> |
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22 | #include <OSD_File.hxx> |
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23 | |
24 | using namespace OpenGl_Raytrace; |
25 | |
26 | //! Use this macro to output ray-tracing debug info |
fc73a202 |
27 | // #define RAY_TRACE_PRINT_INFO |
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28 | |
29 | #ifdef RAY_TRACE_PRINT_INFO |
30 | #include <OSD_Timer.hxx> |
31 | #endif |
32 | |
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33 | // ======================================================================= |
189f85a3 |
34 | // function : updateRaytraceGeometry |
91c60b57 |
35 | // purpose : Updates 3D scene geometry for ray-tracing |
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36 | // ======================================================================= |
91c60b57 |
37 | Standard_Boolean OpenGl_View::updateRaytraceGeometry (const RaytraceUpdateMode theMode, |
38 | const Standard_Integer theViewId, |
39 | const Handle(OpenGl_Context)& theGlContext) |
e276548b |
40 | { |
91c60b57 |
41 | // In 'check' mode (OpenGl_GUM_CHECK) the scene geometry is analyzed for |
42 | // modifications. This is light-weight procedure performed on each frame |
84c71f29 |
43 | if (theMode == OpenGl_GUM_CHECK) |
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44 | { |
189f85a3 |
45 | if (myLayerListState != myZLayers.ModificationState()) |
91c60b57 |
46 | { |
47 | return updateRaytraceGeometry (OpenGl_GUM_PREPARE, theViewId, theGlContext); |
48 | } |
49 | } |
84c71f29 |
50 | else if (theMode == OpenGl_GUM_PREPARE) |
51 | { |
52 | myRaytraceGeometry.ClearMaterials(); |
91c60b57 |
53 | |
84c71f29 |
54 | myArrayToTrianglesMap.clear(); |
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55 | |
56 | myIsRaytraceDataValid = Standard_False; |
57 | } |
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58 | |
59 | // The set of processed structures (reflected to ray-tracing) |
60 | // This set is used to remove out-of-date records from the |
61 | // hash map of structures |
62 | std::set<const OpenGl_Structure*> anElements; |
63 | |
91c60b57 |
64 | // Set to store all currently visible OpenGL primitive arrays |
65 | // applicable for ray-tracing |
8d3f219f |
66 | std::set<Standard_Size> anArrayIDs; |
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67 | |
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68 | // Set to store all non-raytracable elements allowing tracking |
69 | // of changes in OpenGL scene (only for path tracing) |
70 | std::set<Standard_Integer> aNonRaytraceIDs; |
71 | |
91c60b57 |
72 | const OpenGl_Layer& aLayer = myZLayers.Layer (Graphic3d_ZLayerId_Default); |
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73 | |
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74 | if (aLayer.NbStructures() != 0) |
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75 | { |
9f112210 |
76 | const OpenGl_ArrayOfIndexedMapOfStructure& aStructArray = aLayer.ArrayOfStructures(); |
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77 | |
68333c8f |
78 | for (Standard_Integer anIndex = 0; anIndex < aStructArray.Length(); ++anIndex) |
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79 | { |
9f112210 |
80 | for (OpenGl_IndexedMapOfStructure::Iterator aStructIt (aStructArray (anIndex)); aStructIt.More(); aStructIt.Next()) |
e276548b |
81 | { |
82 | const OpenGl_Structure* aStructure = aStructIt.Value(); |
83 | |
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84 | if (theMode == OpenGl_GUM_CHECK) |
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85 | { |
91c60b57 |
86 | if (toUpdateStructure (aStructure)) |
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87 | { |
91c60b57 |
88 | return updateRaytraceGeometry (OpenGl_GUM_PREPARE, theViewId, theGlContext); |
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89 | } |
189f85a3 |
90 | else if (aStructure->IsVisible() && myRaytraceParameters.GlobalIllumination) |
91 | { |
92 | aNonRaytraceIDs.insert (aStructure->highlight ? aStructure->Id : -aStructure->Id); |
93 | } |
e2da917a |
94 | } |
84c71f29 |
95 | else if (theMode == OpenGl_GUM_PREPARE) |
96 | { |
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97 | if (!aStructure->IsRaytracable() || !aStructure->IsVisible()) |
a1954302 |
98 | { |
a272ed94 |
99 | continue; |
100 | } |
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101 | else if (!aStructure->ViewAffinity.IsNull() && !aStructure->ViewAffinity->IsVisible (theViewId)) |
a272ed94 |
102 | { |
84c71f29 |
103 | continue; |
a1954302 |
104 | } |
84c71f29 |
105 | |
106 | for (OpenGl_Structure::GroupIterator aGroupIter (aStructure->DrawGroups()); aGroupIter.More(); aGroupIter.Next()) |
107 | { |
91c60b57 |
108 | // Extract OpenGL elements from the group (primitives arrays) |
84c71f29 |
109 | for (const OpenGl_ElementNode* aNode = aGroupIter.Value()->FirstNode(); aNode != NULL; aNode = aNode->next) |
110 | { |
111 | OpenGl_PrimitiveArray* aPrimArray = dynamic_cast<OpenGl_PrimitiveArray*> (aNode->elem); |
112 | |
113 | if (aPrimArray != NULL) |
114 | { |
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115 | anArrayIDs.insert (aPrimArray->GetUID()); |
84c71f29 |
116 | } |
117 | } |
118 | } |
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119 | } |
91c60b57 |
120 | else if (theMode == OpenGl_GUM_REBUILD) |
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121 | { |
122 | if (!aStructure->IsRaytracable()) |
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123 | { |
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124 | continue; |
91c60b57 |
125 | } |
126 | else if (addRaytraceStructure (aStructure, theGlContext)) |
127 | { |
128 | anElements.insert (aStructure); // structure was processed |
129 | } |
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130 | } |
131 | } |
132 | } |
133 | } |
134 | |
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135 | if (theMode == OpenGl_GUM_PREPARE) |
136 | { |
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137 | BVH_ObjectSet<Standard_ShortReal, 3>::BVH_ObjectList anUnchangedObjects; |
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138 | |
91c60b57 |
139 | // Filter out unchanged objects so only their transformations and materials |
140 | // will be updated (and newly added objects will be processed from scratch) |
141 | for (Standard_Integer anObjIdx = 0; anObjIdx < myRaytraceGeometry.Size(); ++anObjIdx) |
84c71f29 |
142 | { |
143 | OpenGl_TriangleSet* aTriangleSet = dynamic_cast<OpenGl_TriangleSet*> ( |
91c60b57 |
144 | myRaytraceGeometry.Objects().ChangeValue (anObjIdx).operator->()); |
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145 | |
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146 | if (aTriangleSet == NULL) |
84c71f29 |
147 | { |
91c60b57 |
148 | continue; |
149 | } |
150 | |
151 | if (anArrayIDs.find (aTriangleSet->AssociatedPArrayID()) != anArrayIDs.end()) |
152 | { |
153 | anUnchangedObjects.Append (myRaytraceGeometry.Objects().Value (anObjIdx)); |
84c71f29 |
154 | |
8d3f219f |
155 | myArrayToTrianglesMap[aTriangleSet->AssociatedPArrayID()] = aTriangleSet; |
84c71f29 |
156 | } |
157 | } |
158 | |
159 | myRaytraceGeometry.Objects() = anUnchangedObjects; |
160 | |
91c60b57 |
161 | return updateRaytraceGeometry (OpenGl_GUM_REBUILD, theViewId, theGlContext); |
84c71f29 |
162 | } |
91c60b57 |
163 | else if (theMode == OpenGl_GUM_REBUILD) |
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164 | { |
91c60b57 |
165 | // Actualize the hash map of structures - remove out-of-date records |
d4aaad5b |
166 | std::map<const OpenGl_Structure*, StructState>::iterator anIter = myStructureStates.begin(); |
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167 | |
168 | while (anIter != myStructureStates.end()) |
169 | { |
170 | if (anElements.find (anIter->first) == anElements.end()) |
171 | { |
172 | myStructureStates.erase (anIter++); |
173 | } |
174 | else |
175 | { |
176 | ++anIter; |
177 | } |
178 | } |
179 | |
180 | // Actualize OpenGL layer list state |
189f85a3 |
181 | myLayerListState = myZLayers.ModificationState(); |
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182 | |
91c60b57 |
183 | // Rebuild two-level acceleration structure |
265d4508 |
184 | myRaytraceGeometry.ProcessAcceleration(); |
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185 | |
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186 | myRaytraceSceneRadius = 2.f /* scale factor */ * std::max ( |
187 | myRaytraceGeometry.Box().CornerMin().cwiseAbs().maxComp(), |
188 | myRaytraceGeometry.Box().CornerMax().cwiseAbs().maxComp()); |
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189 | |
25ef750e |
190 | const BVH_Vec3f aSize = myRaytraceGeometry.Box().Size(); |
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191 | |
91c60b57 |
192 | myRaytraceSceneEpsilon = Max (1.0e-6f, 1.0e-4f * aSize.Modulus()); |
fc73a202 |
193 | |
91c60b57 |
194 | return uploadRaytraceData (theGlContext); |
e276548b |
195 | } |
196 | |
189f85a3 |
197 | if (myRaytraceParameters.GlobalIllumination) |
198 | { |
199 | Standard_Boolean toRestart = |
200 | aNonRaytraceIDs.size() != myNonRaytraceStructureIDs.size(); |
201 | |
202 | for (std::set<Standard_Integer>::iterator anID = aNonRaytraceIDs.begin(); anID != aNonRaytraceIDs.end() && !toRestart; ++anID) |
203 | { |
204 | if (myNonRaytraceStructureIDs.find (*anID) == myNonRaytraceStructureIDs.end()) |
205 | { |
206 | toRestart = Standard_True; |
207 | } |
208 | } |
209 | |
210 | if (toRestart) |
211 | myAccumFrames = 0; |
212 | |
213 | myNonRaytraceStructureIDs = aNonRaytraceIDs; |
214 | } |
215 | |
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216 | return Standard_True; |
217 | } |
218 | |
219 | // ======================================================================= |
189f85a3 |
220 | // function : toUpdateStructure |
e2da917a |
221 | // purpose : Checks to see if the structure is modified |
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222 | // ======================================================================= |
91c60b57 |
223 | Standard_Boolean OpenGl_View::toUpdateStructure (const OpenGl_Structure* theStructure) |
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224 | { |
225 | if (!theStructure->IsRaytracable()) |
226 | { |
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227 | if (theStructure->ModificationState() > 0) |
228 | { |
229 | theStructure->ResetModificationState(); |
91c60b57 |
230 | |
231 | return Standard_True; // ray-trace element was removed - need to rebuild |
e276548b |
232 | } |
233 | |
91c60b57 |
234 | return Standard_False; // did not contain ray-trace elements |
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235 | } |
236 | |
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237 | std::map<const OpenGl_Structure*, StructState>::iterator aStructState = myStructureStates.find (theStructure); |
e276548b |
238 | |
d4aaad5b |
239 | if (aStructState == myStructureStates.end() || aStructState->second.StructureState != theStructure->ModificationState()) |
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240 | { |
d4aaad5b |
241 | return Standard_True; |
242 | } |
243 | else if (theStructure->InstancedStructure() != NULL) |
244 | { |
245 | return aStructState->second.InstancedState != theStructure->InstancedStructure()->ModificationState(); |
91c60b57 |
246 | } |
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247 | |
d4aaad5b |
248 | return Standard_False; |
e276548b |
249 | } |
250 | |
25ef750e |
251 | // ======================================================================= |
189f85a3 |
252 | // function : buildTextureTransform |
25ef750e |
253 | // purpose : Constructs texture transformation matrix |
254 | // ======================================================================= |
189f85a3 |
255 | void buildTextureTransform (const Handle(Graphic3d_TextureParams)& theParams, BVH_Mat4f& theMatrix) |
25ef750e |
256 | { |
257 | theMatrix.InitIdentity(); |
258 | |
259 | // Apply scaling |
260 | const Graphic3d_Vec2& aScale = theParams->Scale(); |
261 | |
262 | theMatrix.ChangeValue (0, 0) *= aScale.x(); |
263 | theMatrix.ChangeValue (1, 0) *= aScale.x(); |
264 | theMatrix.ChangeValue (2, 0) *= aScale.x(); |
265 | theMatrix.ChangeValue (3, 0) *= aScale.x(); |
266 | |
267 | theMatrix.ChangeValue (0, 1) *= aScale.y(); |
268 | theMatrix.ChangeValue (1, 1) *= aScale.y(); |
269 | theMatrix.ChangeValue (2, 1) *= aScale.y(); |
270 | theMatrix.ChangeValue (3, 1) *= aScale.y(); |
271 | |
272 | // Apply translation |
273 | const Graphic3d_Vec2 aTrans = -theParams->Translation(); |
274 | |
275 | theMatrix.ChangeValue (0, 3) = theMatrix.GetValue (0, 0) * aTrans.x() + |
276 | theMatrix.GetValue (0, 1) * aTrans.y(); |
277 | |
278 | theMatrix.ChangeValue (1, 3) = theMatrix.GetValue (1, 0) * aTrans.x() + |
279 | theMatrix.GetValue (1, 1) * aTrans.y(); |
280 | |
281 | theMatrix.ChangeValue (2, 3) = theMatrix.GetValue (2, 0) * aTrans.x() + |
282 | theMatrix.GetValue (2, 1) * aTrans.y(); |
283 | |
284 | // Apply rotation |
285 | const Standard_ShortReal aSin = std::sin ( |
286 | -theParams->Rotation() * static_cast<Standard_ShortReal> (M_PI / 180.0)); |
287 | const Standard_ShortReal aCos = std::cos ( |
288 | -theParams->Rotation() * static_cast<Standard_ShortReal> (M_PI / 180.0)); |
289 | |
290 | BVH_Mat4f aRotationMat; |
291 | aRotationMat.SetValue (0, 0, aCos); |
292 | aRotationMat.SetValue (1, 1, aCos); |
293 | aRotationMat.SetValue (0, 1, -aSin); |
294 | aRotationMat.SetValue (1, 0, aSin); |
295 | |
296 | theMatrix = theMatrix * aRotationMat; |
297 | } |
298 | |
e276548b |
299 | // ======================================================================= |
189f85a3 |
300 | // function : convertMaterial |
e276548b |
301 | // purpose : Creates ray-tracing material properties |
302 | // ======================================================================= |
91c60b57 |
303 | OpenGl_RaytraceMaterial OpenGl_View::convertMaterial (const OpenGl_AspectFace* theAspect, |
304 | const Handle(OpenGl_Context)& theGlContext) |
e276548b |
305 | { |
91c60b57 |
306 | OpenGl_RaytraceMaterial theMaterial; |
25ef750e |
307 | |
91c60b57 |
308 | const OPENGL_SURF_PROP& aProperties = theAspect->IntFront(); |
25ef750e |
309 | |
91c60b57 |
310 | theMaterial.Ambient = BVH_Vec4f ( |
311 | (aProperties.isphysic ? aProperties.ambcol.rgb[0] : aProperties.matcol.rgb[0]) * aProperties.amb, |
312 | (aProperties.isphysic ? aProperties.ambcol.rgb[1] : aProperties.matcol.rgb[1]) * aProperties.amb, |
313 | (aProperties.isphysic ? aProperties.ambcol.rgb[2] : aProperties.matcol.rgb[2]) * aProperties.amb, |
314 | 1.f); |
25ef750e |
315 | |
91c60b57 |
316 | theMaterial.Diffuse = BVH_Vec4f ( |
317 | (aProperties.isphysic ? aProperties.difcol.rgb[0] : aProperties.matcol.rgb[0]) * aProperties.diff, |
318 | (aProperties.isphysic ? aProperties.difcol.rgb[1] : aProperties.matcol.rgb[1]) * aProperties.diff, |
319 | (aProperties.isphysic ? aProperties.difcol.rgb[2] : aProperties.matcol.rgb[2]) * aProperties.diff, |
320 | -1.f /* no texture */); |
25ef750e |
321 | |
322 | theMaterial.Specular = BVH_Vec4f ( |
323 | (aProperties.isphysic ? aProperties.speccol.rgb[0] : 1.f) * aProperties.spec, |
324 | (aProperties.isphysic ? aProperties.speccol.rgb[1] : 1.f) * aProperties.spec, |
325 | (aProperties.isphysic ? aProperties.speccol.rgb[2] : 1.f) * aProperties.spec, |
326 | aProperties.shine); |
327 | |
91c60b57 |
328 | theMaterial.Emission = BVH_Vec4f ( |
329 | (aProperties.isphysic ? aProperties.emscol.rgb[0] : aProperties.matcol.rgb[0]) * aProperties.emsv, |
330 | (aProperties.isphysic ? aProperties.emscol.rgb[1] : aProperties.matcol.rgb[1]) * aProperties.emsv, |
331 | (aProperties.isphysic ? aProperties.emscol.rgb[2] : aProperties.matcol.rgb[2]) * aProperties.emsv, |
332 | 1.f); |
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333 | |
91c60b57 |
334 | theMaterial.Transparency = BVH_Vec4f (aProperties.trans, |
25ef750e |
335 | 1.f - aProperties.trans, |
336 | aProperties.index == 0 ? 1.f : aProperties.index, |
337 | aProperties.index == 0 ? 1.f : 1.f / aProperties.index); |
e276548b |
338 | |
25ef750e |
339 | const Standard_ShortReal aMaxRefl = Max (theMaterial.Diffuse.x() + theMaterial.Specular.x(), |
340 | Max (theMaterial.Diffuse.y() + theMaterial.Specular.y(), |
341 | theMaterial.Diffuse.z() + theMaterial.Specular.z())); |
e276548b |
342 | |
25ef750e |
343 | const Standard_ShortReal aReflectionScale = 0.75f / aMaxRefl; |
344 | |
345 | theMaterial.Reflection = BVH_Vec4f ( |
346 | aProperties.speccol.rgb[0] * aProperties.spec * aReflectionScale, |
347 | aProperties.speccol.rgb[1] * aProperties.spec * aReflectionScale, |
348 | aProperties.speccol.rgb[2] * aProperties.spec * aReflectionScale, |
349 | 0.f); |
350 | |
189f85a3 |
351 | // Serialize physically-based material properties |
352 | const Graphic3d_BSDF& aBSDF = aProperties.BSDF; |
353 | |
354 | theMaterial.BSDF.Le = BVH_Vec4f (aBSDF.Le, 0.f); |
355 | theMaterial.BSDF.Kd = BVH_Vec4f (aBSDF.Kd, -1.f /* no tex */); |
356 | theMaterial.BSDF.Kr = BVH_Vec4f (aBSDF.Kr, 0.f); |
357 | theMaterial.BSDF.Kt = BVH_Vec4f (aBSDF.Kt, 0.f); |
358 | theMaterial.BSDF.Ks = BVH_Vec4f (aBSDF.Ks, aBSDF.Roughness); |
359 | |
360 | theMaterial.BSDF.Fresnel = aBSDF.Fresnel.Serialize(); |
361 | |
362 | theMaterial.BSDF.Absorption = BVH_Vec4f (aBSDF.AbsorptionColor, |
363 | aBSDF.AbsorptionCoeff); |
364 | |
365 | // Handle material textures |
25ef750e |
366 | if (theAspect->DoTextureMap()) |
367 | { |
91c60b57 |
368 | if (theGlContext->arbTexBindless != NULL) |
25ef750e |
369 | { |
189f85a3 |
370 | buildTextureTransform (theAspect->TextureParams(), theMaterial.TextureTransform); |
91c60b57 |
371 | |
189f85a3 |
372 | // write texture ID to diffuse w-component |
373 | theMaterial.Diffuse.w() = theMaterial.BSDF.Kd.w() = |
374 | static_cast<Standard_ShortReal> (myRaytraceGeometry.AddTexture (theAspect->TextureRes (theGlContext))); |
25ef750e |
375 | } |
376 | else if (!myIsRaytraceWarnTextures) |
377 | { |
91c60b57 |
378 | const TCollection_ExtendedString aWarnMessage = |
379 | "Warning: texturing in Ray-Trace requires GL_ARB_bindless_texture extension which is missing. " |
380 | "Please try to update graphics card driver. At the moment textures will be ignored."; |
381 | |
382 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION_ARB, |
383 | GL_DEBUG_TYPE_PORTABILITY_ARB, 0, GL_DEBUG_SEVERITY_HIGH_ARB, aWarnMessage); |
384 | |
25ef750e |
385 | myIsRaytraceWarnTextures = Standard_True; |
386 | } |
387 | } |
e276548b |
388 | |
91c60b57 |
389 | return theMaterial; |
e276548b |
390 | } |
391 | |
392 | // ======================================================================= |
189f85a3 |
393 | // function : addRaytraceStructure |
e276548b |
394 | // purpose : Adds OpenGL structure to ray-traced scene geometry |
395 | // ======================================================================= |
91c60b57 |
396 | Standard_Boolean OpenGl_View::addRaytraceStructure (const OpenGl_Structure* theStructure, |
397 | const Handle(OpenGl_Context)& theGlContext) |
e276548b |
398 | { |
e276548b |
399 | if (!theStructure->IsVisible()) |
400 | { |
d4aaad5b |
401 | myStructureStates[theStructure] = StructState (theStructure); |
91c60b57 |
402 | |
e276548b |
403 | return Standard_True; |
404 | } |
405 | |
406 | // Get structure material |
8c820969 |
407 | OpenGl_RaytraceMaterial aStructMaterial; |
e276548b |
408 | |
409 | if (theStructure->AspectFace() != NULL) |
410 | { |
8c820969 |
411 | aStructMaterial = convertMaterial (theStructure->AspectFace(), theGlContext); |
e276548b |
412 | } |
413 | |
91c60b57 |
414 | Standard_ShortReal aStructTransform[16]; |
415 | |
0717ddc1 |
416 | if (theStructure->Transformation()->mat != NULL) |
417 | { |
0717ddc1 |
418 | for (Standard_Integer i = 0; i < 4; ++i) |
419 | { |
420 | for (Standard_Integer j = 0; j < 4; ++j) |
421 | { |
422 | aStructTransform[j * 4 + i] = theStructure->Transformation()->mat[i][j]; |
423 | } |
424 | } |
425 | } |
426 | |
8c820969 |
427 | Standard_Boolean aResult = addRaytraceGroups (theStructure, aStructMaterial, |
91c60b57 |
428 | theStructure->Transformation()->mat ? aStructTransform : NULL, theGlContext); |
0717ddc1 |
429 | |
430 | // Process all connected OpenGL structures |
d4aaad5b |
431 | const OpenGl_Structure* anInstanced = theStructure->InstancedStructure(); |
432 | |
433 | if (anInstanced != NULL && anInstanced->IsRaytracable()) |
0717ddc1 |
434 | { |
8c820969 |
435 | aResult &= addRaytraceGroups (anInstanced, aStructMaterial, |
d4aaad5b |
436 | theStructure->Transformation()->mat ? aStructTransform : NULL, theGlContext); |
0717ddc1 |
437 | } |
438 | |
d4aaad5b |
439 | myStructureStates[theStructure] = StructState (theStructure); |
91c60b57 |
440 | |
441 | return aResult; |
0717ddc1 |
442 | } |
443 | |
444 | // ======================================================================= |
189f85a3 |
445 | // function : addRaytraceGroups |
0717ddc1 |
446 | // purpose : Adds OpenGL groups to ray-traced scene geometry |
447 | // ======================================================================= |
8c820969 |
448 | Standard_Boolean OpenGl_View::addRaytraceGroups (const OpenGl_Structure* theStructure, |
449 | const OpenGl_RaytraceMaterial& theStructMat, |
450 | const Standard_ShortReal* theTransform, |
451 | const Handle(OpenGl_Context)& theGlContext) |
0717ddc1 |
452 | { |
b64d84be |
453 | for (OpenGl_Structure::GroupIterator aGroupIter (theStructure->DrawGroups()); aGroupIter.More(); aGroupIter.Next()) |
e276548b |
454 | { |
455 | // Get group material |
8c820969 |
456 | OpenGl_RaytraceMaterial aGroupMaterial; |
b64d84be |
457 | if (aGroupIter.Value()->AspectFace() != NULL) |
e276548b |
458 | { |
8c820969 |
459 | aGroupMaterial = convertMaterial ( |
91c60b57 |
460 | aGroupIter.Value()->AspectFace(), theGlContext); |
e276548b |
461 | } |
462 | |
8c820969 |
463 | Standard_Integer aMatID = static_cast<Standard_Integer> (myRaytraceGeometry.Materials.size()); |
e276548b |
464 | |
8c820969 |
465 | // Use group material if available, otherwise use structure material |
466 | myRaytraceGeometry.Materials.push_back ( |
467 | aGroupIter.Value()->AspectFace() != NULL ? aGroupMaterial : theStructMat); |
e276548b |
468 | |
265d4508 |
469 | // Add OpenGL elements from group (extract primitives arrays and aspects) |
b64d84be |
470 | for (const OpenGl_ElementNode* aNode = aGroupIter.Value()->FirstNode(); aNode != NULL; aNode = aNode->next) |
e276548b |
471 | { |
5322131b |
472 | OpenGl_AspectFace* anAspect = dynamic_cast<OpenGl_AspectFace*> (aNode->elem); |
91c60b57 |
473 | |
5322131b |
474 | if (anAspect != NULL) |
e276548b |
475 | { |
5322131b |
476 | aMatID = static_cast<Standard_Integer> (myRaytraceGeometry.Materials.size()); |
e276548b |
477 | |
91c60b57 |
478 | OpenGl_RaytraceMaterial aMaterial = convertMaterial (anAspect, theGlContext); |
e276548b |
479 | |
5322131b |
480 | myRaytraceGeometry.Materials.push_back (aMaterial); |
e276548b |
481 | } |
5322131b |
482 | else |
e276548b |
483 | { |
484 | OpenGl_PrimitiveArray* aPrimArray = dynamic_cast<OpenGl_PrimitiveArray*> (aNode->elem); |
84c71f29 |
485 | |
e276548b |
486 | if (aPrimArray != NULL) |
487 | { |
8d3f219f |
488 | std::map<Standard_Size, OpenGl_TriangleSet*>::iterator aSetIter = myArrayToTrianglesMap.find (aPrimArray->GetUID()); |
489 | |
84c71f29 |
490 | if (aSetIter != myArrayToTrianglesMap.end()) |
491 | { |
492 | OpenGl_TriangleSet* aSet = aSetIter->second; |
25ef750e |
493 | |
84c71f29 |
494 | BVH_Transform<Standard_ShortReal, 4>* aTransform = new BVH_Transform<Standard_ShortReal, 4>(); |
495 | |
496 | if (theTransform != NULL) |
497 | { |
498 | aTransform->SetTransform (*(reinterpret_cast<const BVH_Mat4f*> (theTransform))); |
499 | } |
91c60b57 |
500 | |
84c71f29 |
501 | aSet->SetProperties (aTransform); |
502 | |
25ef750e |
503 | if (aSet->MaterialIndex() != OpenGl_TriangleSet::INVALID_MATERIAL && aSet->MaterialIndex() != aMatID) |
84c71f29 |
504 | { |
505 | aSet->SetMaterialIndex (aMatID); |
506 | } |
507 | } |
508 | else |
509 | { |
25ef750e |
510 | NCollection_Handle<BVH_Object<Standard_ShortReal, 3> > aSet = |
91c60b57 |
511 | addRaytracePrimitiveArray (aPrimArray, aMatID, 0); |
265d4508 |
512 | |
84c71f29 |
513 | if (!aSet.IsNull()) |
514 | { |
515 | BVH_Transform<Standard_ShortReal, 4>* aTransform = new BVH_Transform<Standard_ShortReal, 4>; |
516 | |
517 | if (theTransform != NULL) |
518 | { |
519 | aTransform->SetTransform (*(reinterpret_cast<const BVH_Mat4f*> (theTransform))); |
520 | } |
521 | |
522 | aSet->SetProperties (aTransform); |
523 | |
524 | myRaytraceGeometry.Objects().Append (aSet); |
525 | } |
526 | } |
e276548b |
527 | } |
528 | } |
529 | } |
e276548b |
530 | } |
531 | |
e276548b |
532 | return Standard_True; |
533 | } |
534 | |
535 | // ======================================================================= |
189f85a3 |
536 | // function : addRaytracePrimitiveArray |
e276548b |
537 | // purpose : Adds OpenGL primitive array to ray-traced scene geometry |
538 | // ======================================================================= |
91c60b57 |
539 | OpenGl_TriangleSet* OpenGl_View::addRaytracePrimitiveArray (const OpenGl_PrimitiveArray* theArray, |
540 | const Standard_Integer theMaterial, |
541 | const OpenGl_Mat4* theTransform) |
e276548b |
542 | { |
91c60b57 |
543 | const Handle(Graphic3d_BoundBuffer)& aBounds = theArray->Bounds(); |
871fa103 |
544 | const Handle(Graphic3d_IndexBuffer)& anIndices = theArray->Indices(); |
545 | const Handle(Graphic3d_Buffer)& anAttribs = theArray->Attributes(); |
91c60b57 |
546 | |
871fa103 |
547 | if (theArray->DrawMode() < GL_TRIANGLES |
91c60b57 |
548 | #ifndef GL_ES_VERSION_2_0 |
871fa103 |
549 | || theArray->DrawMode() > GL_POLYGON |
ca3c13d1 |
550 | #else |
551 | || theArray->DrawMode() > GL_TRIANGLE_FAN |
552 | #endif |
871fa103 |
553 | || anAttribs.IsNull()) |
e276548b |
554 | { |
265d4508 |
555 | return NULL; |
e276548b |
556 | } |
557 | |
25ef750e |
558 | OpenGl_Mat4 aNormalMatrix; |
559 | |
560 | if (theTransform != NULL) |
561 | { |
562 | Standard_ASSERT_RETURN (theTransform->Inverted (aNormalMatrix), |
563 | "Error: Failed to compute normal transformation matrix", NULL); |
564 | |
565 | aNormalMatrix.Transpose(); |
566 | } |
567 | |
8d3f219f |
568 | OpenGl_TriangleSet* aSet = new OpenGl_TriangleSet (theArray->GetUID()); |
e276548b |
569 | { |
871fa103 |
570 | aSet->Vertices.reserve (anAttribs->NbElements); |
91c60b57 |
571 | aSet->Normals.reserve (anAttribs->NbElements); |
572 | aSet->TexCrds.reserve (anAttribs->NbElements); |
25ef750e |
573 | |
871fa103 |
574 | const size_t aVertFrom = aSet->Vertices.size(); |
91c60b57 |
575 | |
871fa103 |
576 | for (Standard_Integer anAttribIter = 0; anAttribIter < anAttribs->NbAttributes; ++anAttribIter) |
265d4508 |
577 | { |
871fa103 |
578 | const Graphic3d_Attribute& anAttrib = anAttribs->Attribute (anAttribIter); |
579 | const size_t anOffset = anAttribs->AttributeOffset (anAttribIter); |
580 | if (anAttrib.Id == Graphic3d_TOA_POS) |
581 | { |
582 | if (anAttrib.DataType == Graphic3d_TOD_VEC3 |
583 | || anAttrib.DataType == Graphic3d_TOD_VEC4) |
584 | { |
585 | for (Standard_Integer aVertIter = 0; aVertIter < anAttribs->NbElements; ++aVertIter) |
586 | { |
25ef750e |
587 | aSet->Vertices.push_back ( |
91c60b57 |
588 | *reinterpret_cast<const Graphic3d_Vec3*> (anAttribs->value (aVertIter) + anOffset)); |
871fa103 |
589 | } |
590 | } |
591 | else if (anAttrib.DataType == Graphic3d_TOD_VEC2) |
592 | { |
593 | for (Standard_Integer aVertIter = 0; aVertIter < anAttribs->NbElements; ++aVertIter) |
594 | { |
91c60b57 |
595 | const Standard_ShortReal* aCoords = |
596 | reinterpret_cast<const Standard_ShortReal*> (anAttribs->value (aVertIter) + anOffset); |
597 | |
598 | aSet->Vertices.push_back (BVH_Vec3f (aCoords[0], aCoords[1], 0.0f)); |
871fa103 |
599 | } |
600 | } |
601 | } |
602 | else if (anAttrib.Id == Graphic3d_TOA_NORM) |
603 | { |
604 | if (anAttrib.DataType == Graphic3d_TOD_VEC3 |
605 | || anAttrib.DataType == Graphic3d_TOD_VEC4) |
606 | { |
607 | for (Standard_Integer aVertIter = 0; aVertIter < anAttribs->NbElements; ++aVertIter) |
608 | { |
25ef750e |
609 | aSet->Normals.push_back ( |
91c60b57 |
610 | *reinterpret_cast<const Graphic3d_Vec3*> (anAttribs->value (aVertIter) + anOffset)); |
25ef750e |
611 | } |
612 | } |
613 | } |
614 | else if (anAttrib.Id == Graphic3d_TOA_UV) |
615 | { |
616 | if (anAttrib.DataType == Graphic3d_TOD_VEC2) |
617 | { |
618 | for (Standard_Integer aVertIter = 0; aVertIter < anAttribs->NbElements; ++aVertIter) |
619 | { |
620 | aSet->TexCrds.push_back ( |
91c60b57 |
621 | *reinterpret_cast<const Graphic3d_Vec2*> (anAttribs->value (aVertIter) + anOffset)); |
871fa103 |
622 | } |
623 | } |
624 | } |
265d4508 |
625 | } |
e276548b |
626 | |
871fa103 |
627 | if (aSet->Normals.size() != aSet->Vertices.size()) |
265d4508 |
628 | { |
871fa103 |
629 | for (Standard_Integer aVertIter = 0; aVertIter < anAttribs->NbElements; ++aVertIter) |
265d4508 |
630 | { |
25ef750e |
631 | aSet->Normals.push_back (BVH_Vec3f()); |
632 | } |
633 | } |
634 | |
635 | if (aSet->TexCrds.size() != aSet->Vertices.size()) |
636 | { |
637 | for (Standard_Integer aVertIter = 0; aVertIter < anAttribs->NbElements; ++aVertIter) |
638 | { |
639 | aSet->TexCrds.push_back (BVH_Vec2f()); |
265d4508 |
640 | } |
871fa103 |
641 | } |
e276548b |
642 | |
25ef750e |
643 | if (theTransform != NULL) |
871fa103 |
644 | { |
645 | for (size_t aVertIter = aVertFrom; aVertIter < aSet->Vertices.size(); ++aVertIter) |
646 | { |
25ef750e |
647 | BVH_Vec3f& aVertex = aSet->Vertices[aVertIter]; |
648 | |
91c60b57 |
649 | BVH_Vec4f aTransVertex = *theTransform * |
650 | BVH_Vec4f (aVertex.x(), aVertex.y(), aVertex.z(), 1.f); |
25ef750e |
651 | |
652 | aVertex = BVH_Vec3f (aTransVertex.x(), aTransVertex.y(), aTransVertex.z()); |
871fa103 |
653 | } |
654 | for (size_t aVertIter = aVertFrom; aVertIter < aSet->Normals.size(); ++aVertIter) |
655 | { |
25ef750e |
656 | BVH_Vec3f& aNormal = aSet->Normals[aVertIter]; |
657 | |
91c60b57 |
658 | BVH_Vec4f aTransNormal = aNormalMatrix * |
659 | BVH_Vec4f (aNormal.x(), aNormal.y(), aNormal.z(), 0.f); |
25ef750e |
660 | |
661 | aNormal = BVH_Vec3f (aTransNormal.x(), aTransNormal.y(), aTransNormal.z()); |
871fa103 |
662 | } |
e276548b |
663 | } |
664 | |
871fa103 |
665 | if (!aBounds.IsNull()) |
265d4508 |
666 | { |
91c60b57 |
667 | for (Standard_Integer aBound = 0, aBoundStart = 0; aBound < aBounds->NbBounds; ++aBound) |
265d4508 |
668 | { |
871fa103 |
669 | const Standard_Integer aVertNum = aBounds->Bounds[aBound]; |
e276548b |
670 | |
91c60b57 |
671 | if (!addRaytraceVertexIndices (*aSet, theMaterial, aVertNum, aBoundStart, *theArray)) |
265d4508 |
672 | { |
673 | delete aSet; |
674 | return NULL; |
675 | } |
676 | |
677 | aBoundStart += aVertNum; |
678 | } |
679 | } |
680 | else |
e276548b |
681 | { |
871fa103 |
682 | const Standard_Integer aVertNum = !anIndices.IsNull() ? anIndices->NbElements : anAttribs->NbElements; |
e276548b |
683 | |
91c60b57 |
684 | if (!addRaytraceVertexIndices (*aSet, theMaterial, aVertNum, 0, *theArray)) |
e276548b |
685 | { |
265d4508 |
686 | delete aSet; |
687 | return NULL; |
e276548b |
688 | } |
e276548b |
689 | } |
690 | } |
e276548b |
691 | |
265d4508 |
692 | if (aSet->Size() != 0) |
91c60b57 |
693 | { |
265d4508 |
694 | aSet->MarkDirty(); |
91c60b57 |
695 | } |
e276548b |
696 | |
265d4508 |
697 | return aSet; |
e276548b |
698 | } |
699 | |
700 | // ======================================================================= |
189f85a3 |
701 | // function : addRaytraceVertexIndices |
e276548b |
702 | // purpose : Adds vertex indices to ray-traced scene geometry |
703 | // ======================================================================= |
91c60b57 |
704 | Standard_Boolean OpenGl_View::addRaytraceVertexIndices (OpenGl_TriangleSet& theSet, |
705 | const Standard_Integer theMatID, |
706 | const Standard_Integer theCount, |
707 | const Standard_Integer theOffset, |
708 | const OpenGl_PrimitiveArray& theArray) |
e276548b |
709 | { |
871fa103 |
710 | switch (theArray.DrawMode()) |
e276548b |
711 | { |
91c60b57 |
712 | case GL_TRIANGLES: return addRaytraceTriangleArray (theSet, theMatID, theCount, theOffset, theArray.Indices()); |
713 | case GL_TRIANGLE_FAN: return addRaytraceTriangleFanArray (theSet, theMatID, theCount, theOffset, theArray.Indices()); |
714 | case GL_TRIANGLE_STRIP: return addRaytraceTriangleStripArray (theSet, theMatID, theCount, theOffset, theArray.Indices()); |
ca3c13d1 |
715 | #if !defined(GL_ES_VERSION_2_0) |
91c60b57 |
716 | case GL_QUAD_STRIP: return addRaytraceQuadrangleStripArray (theSet, theMatID, theCount, theOffset, theArray.Indices()); |
717 | case GL_QUADS: return addRaytraceQuadrangleArray (theSet, theMatID, theCount, theOffset, theArray.Indices()); |
718 | case GL_POLYGON: return addRaytracePolygonArray (theSet, theMatID, theCount, theOffset, theArray.Indices()); |
ca3c13d1 |
719 | #endif |
e276548b |
720 | } |
91c60b57 |
721 | |
871fa103 |
722 | return Standard_False; |
e276548b |
723 | } |
724 | |
725 | // ======================================================================= |
189f85a3 |
726 | // function : addRaytraceTriangleArray |
e276548b |
727 | // purpose : Adds OpenGL triangle array to ray-traced scene geometry |
728 | // ======================================================================= |
91c60b57 |
729 | Standard_Boolean OpenGl_View::addRaytraceTriangleArray (OpenGl_TriangleSet& theSet, |
730 | const Standard_Integer theMatID, |
731 | const Standard_Integer theCount, |
732 | const Standard_Integer theOffset, |
733 | const Handle(Graphic3d_IndexBuffer)& theIndices) |
e276548b |
734 | { |
265d4508 |
735 | if (theCount < 3) |
91c60b57 |
736 | { |
e276548b |
737 | return Standard_True; |
91c60b57 |
738 | } |
e276548b |
739 | |
871fa103 |
740 | theSet.Elements.reserve (theSet.Elements.size() + theCount / 3); |
265d4508 |
741 | |
871fa103 |
742 | if (!theIndices.IsNull()) |
e276548b |
743 | { |
265d4508 |
744 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 2; aVert += 3) |
e276548b |
745 | { |
871fa103 |
746 | theSet.Elements.push_back (BVH_Vec4i (theIndices->Index (aVert + 0), |
747 | theIndices->Index (aVert + 1), |
748 | theIndices->Index (aVert + 2), |
749 | theMatID)); |
e276548b |
750 | } |
751 | } |
752 | else |
753 | { |
265d4508 |
754 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 2; aVert += 3) |
e276548b |
755 | { |
91c60b57 |
756 | theSet.Elements.push_back (BVH_Vec4i (aVert + 0, aVert + 1, aVert + 2, theMatID)); |
e276548b |
757 | } |
758 | } |
759 | |
760 | return Standard_True; |
761 | } |
762 | |
763 | // ======================================================================= |
189f85a3 |
764 | // function : addRaytraceTriangleFanArray |
e276548b |
765 | // purpose : Adds OpenGL triangle fan array to ray-traced scene geometry |
766 | // ======================================================================= |
91c60b57 |
767 | Standard_Boolean OpenGl_View::addRaytraceTriangleFanArray (OpenGl_TriangleSet& theSet, |
768 | const Standard_Integer theMatID, |
769 | const Standard_Integer theCount, |
770 | const Standard_Integer theOffset, |
771 | const Handle(Graphic3d_IndexBuffer)& theIndices) |
e276548b |
772 | { |
265d4508 |
773 | if (theCount < 3) |
91c60b57 |
774 | { |
e276548b |
775 | return Standard_True; |
91c60b57 |
776 | } |
e276548b |
777 | |
871fa103 |
778 | theSet.Elements.reserve (theSet.Elements.size() + theCount - 2); |
265d4508 |
779 | |
871fa103 |
780 | if (!theIndices.IsNull()) |
e276548b |
781 | { |
265d4508 |
782 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 2; ++aVert) |
e276548b |
783 | { |
871fa103 |
784 | theSet.Elements.push_back (BVH_Vec4i (theIndices->Index (theOffset), |
785 | theIndices->Index (aVert + 1), |
786 | theIndices->Index (aVert + 2), |
787 | theMatID)); |
e276548b |
788 | } |
789 | } |
790 | else |
791 | { |
265d4508 |
792 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 2; ++aVert) |
e276548b |
793 | { |
871fa103 |
794 | theSet.Elements.push_back (BVH_Vec4i (theOffset, |
795 | aVert + 1, |
796 | aVert + 2, |
797 | theMatID)); |
e276548b |
798 | } |
799 | } |
800 | |
801 | return Standard_True; |
802 | } |
803 | |
804 | // ======================================================================= |
189f85a3 |
805 | // function : addRaytraceTriangleStripArray |
e276548b |
806 | // purpose : Adds OpenGL triangle strip array to ray-traced scene geometry |
807 | // ======================================================================= |
91c60b57 |
808 | Standard_Boolean OpenGl_View::addRaytraceTriangleStripArray (OpenGl_TriangleSet& theSet, |
809 | const Standard_Integer theMatID, |
810 | const Standard_Integer theCount, |
811 | const Standard_Integer theOffset, |
812 | const Handle(Graphic3d_IndexBuffer)& theIndices) |
e276548b |
813 | { |
265d4508 |
814 | if (theCount < 3) |
91c60b57 |
815 | { |
e276548b |
816 | return Standard_True; |
91c60b57 |
817 | } |
e276548b |
818 | |
871fa103 |
819 | theSet.Elements.reserve (theSet.Elements.size() + theCount - 2); |
265d4508 |
820 | |
871fa103 |
821 | if (!theIndices.IsNull()) |
e276548b |
822 | { |
265d4508 |
823 | for (Standard_Integer aVert = theOffset, aCW = 0; aVert < theOffset + theCount - 2; ++aVert, aCW = (aCW + 1) % 2) |
e276548b |
824 | { |
871fa103 |
825 | theSet.Elements.push_back (BVH_Vec4i (theIndices->Index (aVert + aCW ? 1 : 0), |
826 | theIndices->Index (aVert + aCW ? 0 : 1), |
827 | theIndices->Index (aVert + 2), |
828 | theMatID)); |
e276548b |
829 | } |
830 | } |
831 | else |
832 | { |
265d4508 |
833 | for (Standard_Integer aVert = theOffset, aCW = 0; aVert < theOffset + theCount - 2; ++aVert, aCW = (aCW + 1) % 2) |
e276548b |
834 | { |
871fa103 |
835 | theSet.Elements.push_back (BVH_Vec4i (aVert + aCW ? 1 : 0, |
836 | aVert + aCW ? 0 : 1, |
837 | aVert + 2, |
838 | theMatID)); |
e276548b |
839 | } |
840 | } |
841 | |
842 | return Standard_True; |
843 | } |
844 | |
845 | // ======================================================================= |
189f85a3 |
846 | // function : addRaytraceQuadrangleArray |
e276548b |
847 | // purpose : Adds OpenGL quad array to ray-traced scene geometry |
848 | // ======================================================================= |
91c60b57 |
849 | Standard_Boolean OpenGl_View::addRaytraceQuadrangleArray (OpenGl_TriangleSet& theSet, |
850 | const Standard_Integer theMatID, |
851 | const Standard_Integer theCount, |
852 | const Standard_Integer theOffset, |
853 | const Handle(Graphic3d_IndexBuffer)& theIndices) |
e276548b |
854 | { |
265d4508 |
855 | if (theCount < 4) |
91c60b57 |
856 | { |
e276548b |
857 | return Standard_True; |
91c60b57 |
858 | } |
e276548b |
859 | |
871fa103 |
860 | theSet.Elements.reserve (theSet.Elements.size() + theCount / 2); |
265d4508 |
861 | |
871fa103 |
862 | if (!theIndices.IsNull()) |
e276548b |
863 | { |
265d4508 |
864 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 3; aVert += 4) |
e276548b |
865 | { |
871fa103 |
866 | theSet.Elements.push_back (BVH_Vec4i (theIndices->Index (aVert + 0), |
867 | theIndices->Index (aVert + 1), |
868 | theIndices->Index (aVert + 2), |
869 | theMatID)); |
870 | theSet.Elements.push_back (BVH_Vec4i (theIndices->Index (aVert + 0), |
871 | theIndices->Index (aVert + 2), |
872 | theIndices->Index (aVert + 3), |
873 | theMatID)); |
e276548b |
874 | } |
875 | } |
876 | else |
877 | { |
265d4508 |
878 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 3; aVert += 4) |
e276548b |
879 | { |
871fa103 |
880 | theSet.Elements.push_back (BVH_Vec4i (aVert + 0, aVert + 1, aVert + 2, |
881 | theMatID)); |
882 | theSet.Elements.push_back (BVH_Vec4i (aVert + 0, aVert + 2, aVert + 3, |
883 | theMatID)); |
e276548b |
884 | } |
885 | } |
886 | |
887 | return Standard_True; |
888 | } |
889 | |
890 | // ======================================================================= |
189f85a3 |
891 | // function : addRaytraceQuadrangleStripArray |
e276548b |
892 | // purpose : Adds OpenGL quad strip array to ray-traced scene geometry |
893 | // ======================================================================= |
91c60b57 |
894 | Standard_Boolean OpenGl_View::addRaytraceQuadrangleStripArray (OpenGl_TriangleSet& theSet, |
895 | const Standard_Integer theMatID, |
896 | const Standard_Integer theCount, |
897 | const Standard_Integer theOffset, |
898 | const Handle(Graphic3d_IndexBuffer)& theIndices) |
e276548b |
899 | { |
265d4508 |
900 | if (theCount < 4) |
91c60b57 |
901 | { |
e276548b |
902 | return Standard_True; |
91c60b57 |
903 | } |
e276548b |
904 | |
871fa103 |
905 | theSet.Elements.reserve (theSet.Elements.size() + 2 * theCount - 6); |
265d4508 |
906 | |
871fa103 |
907 | if (!theIndices.IsNull()) |
e276548b |
908 | { |
265d4508 |
909 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 3; aVert += 2) |
e276548b |
910 | { |
871fa103 |
911 | theSet.Elements.push_back (BVH_Vec4i (theIndices->Index (aVert + 0), |
912 | theIndices->Index (aVert + 1), |
913 | theIndices->Index (aVert + 2), |
914 | theMatID)); |
915 | |
916 | theSet.Elements.push_back (BVH_Vec4i (theIndices->Index (aVert + 1), |
917 | theIndices->Index (aVert + 3), |
918 | theIndices->Index (aVert + 2), |
919 | theMatID)); |
e276548b |
920 | } |
921 | } |
922 | else |
923 | { |
265d4508 |
924 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 3; aVert += 2) |
e276548b |
925 | { |
871fa103 |
926 | theSet.Elements.push_back (BVH_Vec4i (aVert + 0, |
927 | aVert + 1, |
928 | aVert + 2, |
929 | theMatID)); |
930 | |
931 | theSet.Elements.push_back (BVH_Vec4i (aVert + 1, |
932 | aVert + 3, |
933 | aVert + 2, |
934 | theMatID)); |
e276548b |
935 | } |
936 | } |
937 | |
938 | return Standard_True; |
939 | } |
940 | |
941 | // ======================================================================= |
189f85a3 |
942 | // function : addRaytracePolygonArray |
e276548b |
943 | // purpose : Adds OpenGL polygon array to ray-traced scene geometry |
944 | // ======================================================================= |
91c60b57 |
945 | Standard_Boolean OpenGl_View::addRaytracePolygonArray (OpenGl_TriangleSet& theSet, |
946 | const Standard_Integer theMatID, |
947 | const Standard_Integer theCount, |
948 | const Standard_Integer theOffset, |
949 | const Handle(Graphic3d_IndexBuffer)& theIndices) |
e276548b |
950 | { |
265d4508 |
951 | if (theCount < 3) |
91c60b57 |
952 | { |
e276548b |
953 | return Standard_True; |
91c60b57 |
954 | } |
e276548b |
955 | |
871fa103 |
956 | theSet.Elements.reserve (theSet.Elements.size() + theCount - 2); |
265d4508 |
957 | |
871fa103 |
958 | if (!theIndices.IsNull()) |
e276548b |
959 | { |
265d4508 |
960 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 2; ++aVert) |
e276548b |
961 | { |
871fa103 |
962 | theSet.Elements.push_back (BVH_Vec4i (theIndices->Index (theOffset), |
963 | theIndices->Index (aVert + 1), |
964 | theIndices->Index (aVert + 2), |
965 | theMatID)); |
e276548b |
966 | } |
967 | } |
968 | else |
969 | { |
265d4508 |
970 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 2; ++aVert) |
e276548b |
971 | { |
871fa103 |
972 | theSet.Elements.push_back (BVH_Vec4i (theOffset, |
973 | aVert + 1, |
974 | aVert + 2, |
975 | theMatID)); |
e276548b |
976 | } |
977 | } |
978 | |
979 | return Standard_True; |
980 | } |
981 | |
189f85a3 |
982 | const TCollection_AsciiString OpenGl_View::ShaderSource::EMPTY_PREFIX; |
983 | |
e276548b |
984 | // ======================================================================= |
fc73a202 |
985 | // function : Source |
986 | // purpose : Returns shader source combined with prefix |
e276548b |
987 | // ======================================================================= |
91c60b57 |
988 | TCollection_AsciiString OpenGl_View::ShaderSource::Source() const |
e276548b |
989 | { |
f8ae3605 |
990 | const TCollection_AsciiString aVersion = "#version 140"; |
e276548b |
991 | |
fc73a202 |
992 | if (myPrefix.IsEmpty()) |
e276548b |
993 | { |
fc73a202 |
994 | return aVersion + "\n" + mySource; |
e276548b |
995 | } |
996 | |
fc73a202 |
997 | return aVersion + "\n" + myPrefix + "\n" + mySource; |
e276548b |
998 | } |
999 | |
1000 | // ======================================================================= |
fc73a202 |
1001 | // function : Load |
1002 | // purpose : Loads shader source from specified files |
e276548b |
1003 | // ======================================================================= |
73722cc9 |
1004 | Standard_Boolean OpenGl_View::ShaderSource::Load (const TCollection_AsciiString* theFileNames, |
1005 | const TCollection_AsciiString& thePrefix) |
e276548b |
1006 | { |
73722cc9 |
1007 | myError.Clear(); |
fc73a202 |
1008 | mySource.Clear(); |
73722cc9 |
1009 | TCollection_AsciiString aMissingFiles; |
189f85a3 |
1010 | for (Standard_Integer anIndex = 0; !theFileNames[anIndex].IsEmpty(); ++anIndex) |
fc73a202 |
1011 | { |
1012 | OSD_File aFile (theFileNames[anIndex]); |
73722cc9 |
1013 | if (aFile.Exists()) |
1014 | { |
1015 | aFile.Open (OSD_ReadOnly, OSD_Protection()); |
1016 | } |
1017 | if (!aFile.IsOpen()) |
1018 | { |
1019 | if (!aMissingFiles.IsEmpty()) |
1020 | { |
1021 | aMissingFiles += ", "; |
1022 | } |
1023 | aMissingFiles += TCollection_AsciiString("'") + theFileNames[anIndex] + "'"; |
1024 | continue; |
1025 | } |
1026 | else if (!aMissingFiles.IsEmpty()) |
1027 | { |
1028 | aFile.Close(); |
1029 | continue; |
1030 | } |
265d4508 |
1031 | |
fc73a202 |
1032 | TCollection_AsciiString aSource; |
fc73a202 |
1033 | aFile.Read (aSource, (Standard_Integer) aFile.Size()); |
fc73a202 |
1034 | if (!aSource.IsEmpty()) |
1035 | { |
1036 | mySource += TCollection_AsciiString ("\n") + aSource; |
1037 | } |
fc73a202 |
1038 | aFile.Close(); |
68333c8f |
1039 | } |
189f85a3 |
1040 | |
1041 | myPrefix = thePrefix; |
73722cc9 |
1042 | if (!aMissingFiles.IsEmpty()) |
1043 | { |
1044 | myError = TCollection_AsciiString("Shader files ") + aMissingFiles + " are missing or inaccessible"; |
1045 | return Standard_False; |
1046 | } |
1047 | return Standard_True; |
e276548b |
1048 | } |
1049 | |
1050 | // ======================================================================= |
189f85a3 |
1051 | // function : generateShaderPrefix |
91c60b57 |
1052 | // purpose : Generates shader prefix based on current ray-tracing options |
1053 | // ======================================================================= |
1054 | TCollection_AsciiString OpenGl_View::generateShaderPrefix (const Handle(OpenGl_Context)& theGlContext) const |
1055 | { |
1056 | TCollection_AsciiString aPrefixString = |
1057 | TCollection_AsciiString ("#define STACK_SIZE ") + TCollection_AsciiString (myRaytraceParameters.StackSize) + "\n" + |
1058 | TCollection_AsciiString ("#define NB_BOUNCES ") + TCollection_AsciiString (myRaytraceParameters.NbBounces); |
1059 | |
1060 | if (myRaytraceParameters.TransparentShadows) |
1061 | { |
1062 | aPrefixString += TCollection_AsciiString ("\n#define TRANSPARENT_SHADOWS"); |
1063 | } |
1064 | |
f483f2ed |
1065 | // If OpenGL driver supports bindless textures and texturing |
1066 | // is actually used, activate texturing in ray-tracing mode |
1067 | if (myRaytraceParameters.UseBindlessTextures && theGlContext->arbTexBindless != NULL) |
91c60b57 |
1068 | { |
1069 | aPrefixString += TCollection_AsciiString ("\n#define USE_TEXTURES") + |
1070 | TCollection_AsciiString ("\n#define MAX_TEX_NUMBER ") + TCollection_AsciiString (OpenGl_RaytraceGeometry::MAX_TEX_NUMBER); |
1071 | } |
1072 | |
189f85a3 |
1073 | if (myRaytraceParameters.GlobalIllumination) |
1074 | { |
1075 | aPrefixString += TCollection_AsciiString ("\n#define PATH_TRACING"); |
1076 | } |
1077 | |
91c60b57 |
1078 | return aPrefixString; |
1079 | } |
1080 | |
1081 | // ======================================================================= |
189f85a3 |
1082 | // function : safeFailBack |
91c60b57 |
1083 | // purpose : Performs safe exit when shaders initialization fails |
1084 | // ======================================================================= |
1085 | Standard_Boolean OpenGl_View::safeFailBack (const TCollection_ExtendedString& theMessage, |
1086 | const Handle(OpenGl_Context)& theGlContext) |
1087 | { |
1088 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION_ARB, |
1089 | GL_DEBUG_TYPE_ERROR_ARB, 0, GL_DEBUG_SEVERITY_HIGH_ARB, theMessage); |
1090 | |
1091 | myRaytraceInitStatus = OpenGl_RT_FAIL; |
1092 | |
1093 | releaseRaytraceResources (theGlContext); |
1094 | |
1095 | return Standard_False; |
1096 | } |
1097 | |
1098 | // ======================================================================= |
189f85a3 |
1099 | // function : initShader |
fc73a202 |
1100 | // purpose : Creates new shader object with specified source |
e276548b |
1101 | // ======================================================================= |
91c60b57 |
1102 | Handle(OpenGl_ShaderObject) OpenGl_View::initShader (const GLenum theType, |
1103 | const ShaderSource& theSource, |
1104 | const Handle(OpenGl_Context)& theGlContext) |
e276548b |
1105 | { |
fc73a202 |
1106 | Handle(OpenGl_ShaderObject) aShader = new OpenGl_ShaderObject (theType); |
e276548b |
1107 | |
91c60b57 |
1108 | if (!aShader->Create (theGlContext)) |
e276548b |
1109 | { |
07039714 |
1110 | const TCollection_ExtendedString aMessage = TCollection_ExtendedString ("Error: Failed to create ") + |
1111 | (theType == GL_VERTEX_SHADER ? "vertex" : "fragment") + " shader object"; |
1112 | |
91c60b57 |
1113 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION_ARB, |
fc73a202 |
1114 | GL_DEBUG_TYPE_ERROR_ARB, 0, GL_DEBUG_SEVERITY_HIGH_ARB, aMessage); |
e276548b |
1115 | |
91c60b57 |
1116 | aShader->Release (theGlContext.operator->()); |
e276548b |
1117 | |
fc73a202 |
1118 | return Handle(OpenGl_ShaderObject)(); |
e276548b |
1119 | } |
5322131b |
1120 | |
91c60b57 |
1121 | if (!aShader->LoadSource (theGlContext, theSource.Source())) |
fc73a202 |
1122 | { |
07039714 |
1123 | const TCollection_ExtendedString aMessage = TCollection_ExtendedString ("Error: Failed to set ") + |
1124 | (theType == GL_VERTEX_SHADER ? "vertex" : "fragment") + " shader source"; |
1125 | |
91c60b57 |
1126 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION_ARB, |
fc73a202 |
1127 | GL_DEBUG_TYPE_ERROR_ARB, 0, GL_DEBUG_SEVERITY_HIGH_ARB, aMessage); |
e276548b |
1128 | |
91c60b57 |
1129 | aShader->Release (theGlContext.operator->()); |
e276548b |
1130 | |
fc73a202 |
1131 | return Handle(OpenGl_ShaderObject)(); |
1132 | } |
e276548b |
1133 | |
fc73a202 |
1134 | TCollection_AsciiString aBuildLog; |
e276548b |
1135 | |
91c60b57 |
1136 | if (!aShader->Compile (theGlContext)) |
e276548b |
1137 | { |
91c60b57 |
1138 | aShader->FetchInfoLog (theGlContext, aBuildLog); |
fc73a202 |
1139 | |
07039714 |
1140 | const TCollection_ExtendedString aMessage = TCollection_ExtendedString ("Error: Failed to compile ") + |
1141 | (theType == GL_VERTEX_SHADER ? "vertex" : "fragment") + " shader object:\n" + aBuildLog; |
1142 | |
91c60b57 |
1143 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION_ARB, |
07039714 |
1144 | GL_DEBUG_TYPE_ERROR_ARB, 0, GL_DEBUG_SEVERITY_HIGH_ARB, aMessage); |
e276548b |
1145 | |
91c60b57 |
1146 | aShader->Release (theGlContext.operator->()); |
fc73a202 |
1147 | |
1148 | return Handle(OpenGl_ShaderObject)(); |
1149 | } |
91c60b57 |
1150 | else if (theGlContext->caps->glslWarnings) |
fc73a202 |
1151 | { |
91c60b57 |
1152 | aShader->FetchInfoLog (theGlContext, aBuildLog); |
07039714 |
1153 | |
1154 | if (!aBuildLog.IsEmpty() && !aBuildLog.IsEqual ("No errors.\n")) |
fc73a202 |
1155 | { |
07039714 |
1156 | const TCollection_ExtendedString aMessage = TCollection_ExtendedString (theType == GL_VERTEX_SHADER ? |
1157 | "Vertex" : "Fragment") + " shader was compiled with following warnings:\n" + aBuildLog; |
1158 | |
91c60b57 |
1159 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION_ARB, |
07039714 |
1160 | GL_DEBUG_TYPE_PORTABILITY_ARB, 0, GL_DEBUG_SEVERITY_LOW_ARB, aMessage); |
fc73a202 |
1161 | } |
07039714 |
1162 | } |
e276548b |
1163 | |
fc73a202 |
1164 | return aShader; |
e276548b |
1165 | } |
1166 | |
1167 | // ======================================================================= |
189f85a3 |
1168 | // function : initProgram |
1169 | // purpose : Creates GLSL program from the given shader objects |
1170 | // ======================================================================= |
1171 | Handle(OpenGl_ShaderProgram) OpenGl_View::initProgram (const Handle(OpenGl_Context)& theGlContext, |
1172 | const Handle(OpenGl_ShaderObject)& theVertShader, |
1173 | const Handle(OpenGl_ShaderObject)& theFragShader) |
1174 | { |
1175 | Handle(OpenGl_ShaderProgram) aProgram = new OpenGl_ShaderProgram; |
1176 | |
1177 | if (!aProgram->Create (theGlContext)) |
1178 | { |
1179 | theVertShader->Release (theGlContext.operator->()); |
1180 | |
1181 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION_ARB, |
1182 | GL_DEBUG_TYPE_ERROR_ARB, 0, GL_DEBUG_SEVERITY_HIGH_ARB, "Failed to create shader program"); |
1183 | |
1184 | return Handle(OpenGl_ShaderProgram)(); |
1185 | } |
1186 | |
1187 | if (!aProgram->AttachShader (theGlContext, theVertShader) |
1188 | || !aProgram->AttachShader (theGlContext, theFragShader)) |
1189 | { |
1190 | theVertShader->Release (theGlContext.operator->()); |
1191 | |
1192 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION_ARB, |
1193 | GL_DEBUG_TYPE_ERROR_ARB, 0, GL_DEBUG_SEVERITY_HIGH_ARB, "Failed to attach shader objects"); |
1194 | |
1195 | return Handle(OpenGl_ShaderProgram)(); |
1196 | } |
1197 | |
1198 | aProgram->SetAttributeName (theGlContext, Graphic3d_TOA_POS, "occVertex"); |
1199 | |
1200 | TCollection_AsciiString aLinkLog; |
1201 | |
1202 | if (!aProgram->Link (theGlContext)) |
1203 | { |
1204 | aProgram->FetchInfoLog (theGlContext, aLinkLog); |
1205 | |
1206 | const TCollection_ExtendedString aMessage = TCollection_ExtendedString ( |
1207 | "Failed to link shader program:\n") + aLinkLog; |
1208 | |
1209 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION_ARB, |
1210 | GL_DEBUG_TYPE_ERROR_ARB, 0, GL_DEBUG_SEVERITY_HIGH_ARB, aMessage); |
1211 | |
1212 | return Handle(OpenGl_ShaderProgram)(); |
1213 | } |
1214 | else if (theGlContext->caps->glslWarnings) |
1215 | { |
47e9c178 |
1216 | aProgram->FetchInfoLog (theGlContext, aLinkLog); |
189f85a3 |
1217 | if (!aLinkLog.IsEmpty() && !aLinkLog.IsEqual ("No errors.\n")) |
1218 | { |
1219 | const TCollection_ExtendedString aMessage = TCollection_ExtendedString ( |
1220 | "Shader program was linked with following warnings:\n") + aLinkLog; |
1221 | |
1222 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION_ARB, |
1223 | GL_DEBUG_TYPE_PORTABILITY_ARB, 0, GL_DEBUG_SEVERITY_LOW_ARB, aMessage); |
1224 | } |
1225 | } |
1226 | |
1227 | return aProgram; |
1228 | } |
1229 | |
1230 | // ======================================================================= |
1231 | // function : initRaytraceResources |
91c60b57 |
1232 | // purpose : Initializes OpenGL/GLSL shader programs |
e276548b |
1233 | // ======================================================================= |
c357e426 |
1234 | Standard_Boolean OpenGl_View::initRaytraceResources (const Handle(OpenGl_Context)& theGlContext) |
e276548b |
1235 | { |
91c60b57 |
1236 | if (myRaytraceInitStatus == OpenGl_RT_FAIL) |
1237 | { |
1238 | return Standard_False; |
1239 | } |
265d4508 |
1240 | |
91c60b57 |
1241 | Standard_Boolean aToRebuildShaders = Standard_False; |
265d4508 |
1242 | |
91c60b57 |
1243 | if (myRaytraceInitStatus == OpenGl_RT_INIT) |
1244 | { |
1245 | if (!myIsRaytraceDataValid) |
1246 | return Standard_True; |
07039714 |
1247 | |
91c60b57 |
1248 | const Standard_Integer aRequiredStackSize = |
1249 | myRaytraceGeometry.HighLevelTreeDepth() + myRaytraceGeometry.BottomLevelTreeDepth(); |
e276548b |
1250 | |
91c60b57 |
1251 | if (myRaytraceParameters.StackSize < aRequiredStackSize) |
1252 | { |
1253 | myRaytraceParameters.StackSize = Max (aRequiredStackSize, THE_DEFAULT_STACK_SIZE); |
e276548b |
1254 | |
fc73a202 |
1255 | aToRebuildShaders = Standard_True; |
1256 | } |
1257 | else |
1258 | { |
bc8c79bb |
1259 | if (aRequiredStackSize < myRaytraceParameters.StackSize) |
fc73a202 |
1260 | { |
bc8c79bb |
1261 | if (myRaytraceParameters.StackSize > THE_DEFAULT_STACK_SIZE) |
fc73a202 |
1262 | { |
bc8c79bb |
1263 | myRaytraceParameters.StackSize = Max (aRequiredStackSize, THE_DEFAULT_STACK_SIZE); |
fc73a202 |
1264 | aToRebuildShaders = Standard_True; |
1265 | } |
1266 | } |
1267 | } |
e276548b |
1268 | |
c357e426 |
1269 | if (myRenderParams.RaytracingDepth != myRaytraceParameters.NbBounces) |
bc8c79bb |
1270 | { |
c357e426 |
1271 | myRaytraceParameters.NbBounces = myRenderParams.RaytracingDepth; |
bc8c79bb |
1272 | aToRebuildShaders = Standard_True; |
1273 | } |
1274 | |
f483f2ed |
1275 | if (myRaytraceGeometry.HasTextures() != myRaytraceParameters.UseBindlessTextures) |
1276 | { |
1277 | myRaytraceParameters.UseBindlessTextures = myRaytraceGeometry.HasTextures(); |
1278 | aToRebuildShaders = Standard_True; |
1279 | } |
1280 | |
c357e426 |
1281 | if (myRenderParams.IsTransparentShadowEnabled != myRaytraceParameters.TransparentShadows) |
bc8c79bb |
1282 | { |
c357e426 |
1283 | myRaytraceParameters.TransparentShadows = myRenderParams.IsTransparentShadowEnabled; |
bc8c79bb |
1284 | aToRebuildShaders = Standard_True; |
1285 | } |
1286 | |
c357e426 |
1287 | if (myRenderParams.IsGlobalIlluminationEnabled != myRaytraceParameters.GlobalIllumination) |
189f85a3 |
1288 | { |
c357e426 |
1289 | myRaytraceParameters.GlobalIllumination = myRenderParams.IsGlobalIlluminationEnabled; |
189f85a3 |
1290 | aToRebuildShaders = Standard_True; |
1291 | } |
1292 | |
fc73a202 |
1293 | if (aToRebuildShaders) |
1294 | { |
189f85a3 |
1295 | // Reject accumulated frames |
1296 | myAccumFrames = 0; |
e276548b |
1297 | |
189f85a3 |
1298 | // We need to update environment texture |
91c60b57 |
1299 | myToUpdateEnvironmentMap = Standard_True; |
84c71f29 |
1300 | |
91c60b57 |
1301 | TCollection_AsciiString aPrefixString = generateShaderPrefix (theGlContext); |
bc8c79bb |
1302 | |
1303 | #ifdef RAY_TRACE_PRINT_INFO |
1304 | std::cout << "GLSL prefix string:" << std::endl << aPrefixString << std::endl; |
1305 | #endif |
265d4508 |
1306 | |
bc8c79bb |
1307 | myRaytraceShaderSource.SetPrefix (aPrefixString); |
1308 | myPostFSAAShaderSource.SetPrefix (aPrefixString); |
265d4508 |
1309 | |
91c60b57 |
1310 | if (!myRaytraceShader->LoadSource (theGlContext, myRaytraceShaderSource.Source()) |
1311 | || !myPostFSAAShader->LoadSource (theGlContext, myPostFSAAShaderSource.Source())) |
fc73a202 |
1312 | { |
91c60b57 |
1313 | return safeFailBack ("Failed to load source into ray-tracing fragment shaders", theGlContext); |
fc73a202 |
1314 | } |
265d4508 |
1315 | |
91c60b57 |
1316 | if (!myRaytraceShader->Compile (theGlContext) |
1317 | || !myPostFSAAShader->Compile (theGlContext)) |
fc73a202 |
1318 | { |
91c60b57 |
1319 | return safeFailBack ("Failed to compile ray-tracing fragment shaders", theGlContext); |
fc73a202 |
1320 | } |
1321 | |
91c60b57 |
1322 | myRaytraceProgram->SetAttributeName (theGlContext, Graphic3d_TOA_POS, "occVertex"); |
1323 | myPostFSAAProgram->SetAttributeName (theGlContext, Graphic3d_TOA_POS, "occVertex"); |
1324 | if (!myRaytraceProgram->Link (theGlContext) |
1325 | || !myPostFSAAProgram->Link (theGlContext)) |
fc73a202 |
1326 | { |
91c60b57 |
1327 | return safeFailBack ("Failed to initialize vertex attributes for ray-tracing program", theGlContext); |
fc73a202 |
1328 | } |
1329 | } |
e276548b |
1330 | } |
1331 | |
91c60b57 |
1332 | if (myRaytraceInitStatus == OpenGl_RT_NONE) |
fc73a202 |
1333 | { |
91c60b57 |
1334 | if (!theGlContext->IsGlGreaterEqual (3, 1)) |
fc73a202 |
1335 | { |
91c60b57 |
1336 | return safeFailBack ("Ray-tracing requires OpenGL 3.1 and higher", theGlContext); |
25ef750e |
1337 | } |
91c60b57 |
1338 | else if (!theGlContext->arbTboRGB32) |
25ef750e |
1339 | { |
91c60b57 |
1340 | return safeFailBack ("Ray-tracing requires OpenGL 4.0+ or GL_ARB_texture_buffer_object_rgb32 extension", theGlContext); |
1341 | } |
1342 | else if (!theGlContext->arbFBOBlit) |
1343 | { |
1344 | return safeFailBack ("Ray-tracing requires EXT_framebuffer_blit extension", theGlContext); |
fc73a202 |
1345 | } |
5322131b |
1346 | |
c357e426 |
1347 | myRaytraceParameters.NbBounces = myRenderParams.RaytracingDepth; |
bc8c79bb |
1348 | |
fc73a202 |
1349 | TCollection_AsciiString aFolder = Graphic3d_ShaderProgram::ShadersFolder(); |
265d4508 |
1350 | |
fc73a202 |
1351 | if (aFolder.IsEmpty()) |
1352 | { |
91c60b57 |
1353 | return safeFailBack ("Failed to locate shaders directory", theGlContext); |
fc73a202 |
1354 | } |
265d4508 |
1355 | |
fc73a202 |
1356 | if (myIsRaytraceDataValid) |
1357 | { |
bc8c79bb |
1358 | myRaytraceParameters.StackSize = Max (THE_DEFAULT_STACK_SIZE, |
fc73a202 |
1359 | myRaytraceGeometry.HighLevelTreeDepth() + myRaytraceGeometry.BottomLevelTreeDepth()); |
1360 | } |
265d4508 |
1361 | |
91c60b57 |
1362 | TCollection_AsciiString aPrefixString = generateShaderPrefix (theGlContext); |
bc8c79bb |
1363 | |
1364 | #ifdef RAY_TRACE_PRINT_INFO |
1365 | std::cout << "GLSL prefix string:" << std::endl << aPrefixString << std::endl; |
1366 | #endif |
1367 | |
73722cc9 |
1368 | ShaderSource aBasicVertShaderSrc; |
fc73a202 |
1369 | { |
73722cc9 |
1370 | TCollection_AsciiString aFiles[] = { aFolder + "/RaytraceBase.vs", "" }; |
1371 | if (!aBasicVertShaderSrc.Load (aFiles)) |
fc73a202 |
1372 | { |
73722cc9 |
1373 | return safeFailBack (aBasicVertShaderSrc.ErrorDescription(), theGlContext); |
fc73a202 |
1374 | } |
73722cc9 |
1375 | } |
265d4508 |
1376 | |
73722cc9 |
1377 | { |
07039714 |
1378 | TCollection_AsciiString aFiles[] = { aFolder + "/RaytraceBase.fs", |
189f85a3 |
1379 | aFolder + "/PathtraceBase.fs", |
1380 | aFolder + "/RaytraceRender.fs", |
1381 | "" }; |
73722cc9 |
1382 | if (!myRaytraceShaderSource.Load (aFiles, aPrefixString)) |
1383 | { |
1384 | return safeFailBack (myRaytraceShaderSource.ErrorDescription(), theGlContext); |
1385 | } |
e276548b |
1386 | |
73722cc9 |
1387 | Handle(OpenGl_ShaderObject) aBasicVertShader = initShader (GL_VERTEX_SHADER, aBasicVertShaderSrc, theGlContext); |
1388 | if (aBasicVertShader.IsNull()) |
1389 | { |
1390 | return safeFailBack ("Failed to initialize ray-trace vertex shader", theGlContext); |
1391 | } |
265d4508 |
1392 | |
91c60b57 |
1393 | myRaytraceShader = initShader (GL_FRAGMENT_SHADER, myRaytraceShaderSource, theGlContext); |
fc73a202 |
1394 | if (myRaytraceShader.IsNull()) |
1395 | { |
91c60b57 |
1396 | aBasicVertShader->Release (theGlContext.operator->()); |
91c60b57 |
1397 | return safeFailBack ("Failed to initialize ray-trace fragment shader", theGlContext); |
fc73a202 |
1398 | } |
265d4508 |
1399 | |
189f85a3 |
1400 | myRaytraceProgram = initProgram (theGlContext, aBasicVertShader, myRaytraceShader); |
189f85a3 |
1401 | if (myRaytraceProgram.IsNull()) |
fc73a202 |
1402 | { |
189f85a3 |
1403 | return safeFailBack ("Failed to initialize ray-trace shader program", theGlContext); |
fc73a202 |
1404 | } |
1405 | } |
265d4508 |
1406 | |
fc73a202 |
1407 | { |
73722cc9 |
1408 | TCollection_AsciiString aFiles[] = { aFolder + "/RaytraceBase.fs", |
1409 | aFolder + "/RaytraceSmooth.fs", |
1410 | "" }; |
1411 | if (!myPostFSAAShaderSource.Load (aFiles, aPrefixString)) |
1412 | { |
1413 | return safeFailBack (myPostFSAAShaderSource.ErrorDescription(), theGlContext); |
1414 | } |
265d4508 |
1415 | |
73722cc9 |
1416 | Handle(OpenGl_ShaderObject) aBasicVertShader = initShader (GL_VERTEX_SHADER, aBasicVertShaderSrc, theGlContext); |
fc73a202 |
1417 | if (aBasicVertShader.IsNull()) |
1418 | { |
91c60b57 |
1419 | return safeFailBack ("Failed to initialize FSAA vertex shader", theGlContext); |
fc73a202 |
1420 | } |
265d4508 |
1421 | |
91c60b57 |
1422 | myPostFSAAShader = initShader (GL_FRAGMENT_SHADER, myPostFSAAShaderSource, theGlContext); |
fc73a202 |
1423 | if (myPostFSAAShader.IsNull()) |
1424 | { |
91c60b57 |
1425 | aBasicVertShader->Release (theGlContext.operator->()); |
91c60b57 |
1426 | return safeFailBack ("Failed to initialize FSAA fragment shader", theGlContext); |
fc73a202 |
1427 | } |
265d4508 |
1428 | |
189f85a3 |
1429 | myPostFSAAProgram = initProgram (theGlContext, aBasicVertShader, myPostFSAAShader); |
189f85a3 |
1430 | if (myPostFSAAProgram.IsNull()) |
fc73a202 |
1431 | { |
189f85a3 |
1432 | return safeFailBack ("Failed to initialize FSAA shader program", theGlContext); |
fc73a202 |
1433 | } |
189f85a3 |
1434 | } |
fc73a202 |
1435 | |
189f85a3 |
1436 | { |
73722cc9 |
1437 | ShaderSource aDispShaderSrc; |
1438 | TCollection_AsciiString aFiles[] = { aFolder + "/Display.fs", "" }; |
1439 | if (!aDispShaderSrc.Load (aFiles, aPrefixString)) |
1440 | { |
1441 | return safeFailBack (aDispShaderSrc.ErrorDescription(), theGlContext); |
1442 | } |
fc73a202 |
1443 | |
73722cc9 |
1444 | Handle(OpenGl_ShaderObject) aBasicVertShader = initShader (GL_VERTEX_SHADER, aBasicVertShaderSrc, theGlContext); |
189f85a3 |
1445 | if (aBasicVertShader.IsNull()) |
1446 | { |
1447 | return safeFailBack ("Failed to set vertex shader source", theGlContext); |
fc73a202 |
1448 | } |
1449 | |
73722cc9 |
1450 | Handle(OpenGl_ShaderObject) aDisplayShader = initShader (GL_FRAGMENT_SHADER, aDispShaderSrc, theGlContext); |
189f85a3 |
1451 | if (aDisplayShader.IsNull()) |
fc73a202 |
1452 | { |
189f85a3 |
1453 | aBasicVertShader->Release (theGlContext.operator->()); |
189f85a3 |
1454 | return safeFailBack ("Failed to set display fragment shader source", theGlContext); |
07039714 |
1455 | } |
fc73a202 |
1456 | |
189f85a3 |
1457 | myOutImageProgram = initProgram (theGlContext, aBasicVertShader, aDisplayShader); |
189f85a3 |
1458 | if (myOutImageProgram.IsNull()) |
1459 | { |
1460 | return safeFailBack ("Failed to initialize output shader program", theGlContext); |
fc73a202 |
1461 | } |
e276548b |
1462 | } |
fc73a202 |
1463 | } |
e276548b |
1464 | |
91c60b57 |
1465 | if (myRaytraceInitStatus == OpenGl_RT_NONE || aToRebuildShaders) |
fc73a202 |
1466 | { |
1467 | for (Standard_Integer anIndex = 0; anIndex < 2; ++anIndex) |
e276548b |
1468 | { |
fc73a202 |
1469 | Handle(OpenGl_ShaderProgram)& aShaderProgram = |
1470 | (anIndex == 0) ? myRaytraceProgram : myPostFSAAProgram; |
1471 | |
91c60b57 |
1472 | theGlContext->BindProgram (aShaderProgram); |
fc73a202 |
1473 | |
91c60b57 |
1474 | aShaderProgram->SetSampler (theGlContext, |
fc73a202 |
1475 | "uSceneMinPointTexture", OpenGl_RT_SceneMinPointTexture); |
91c60b57 |
1476 | aShaderProgram->SetSampler (theGlContext, |
fc73a202 |
1477 | "uSceneMaxPointTexture", OpenGl_RT_SceneMaxPointTexture); |
91c60b57 |
1478 | aShaderProgram->SetSampler (theGlContext, |
fc73a202 |
1479 | "uSceneNodeInfoTexture", OpenGl_RT_SceneNodeInfoTexture); |
91c60b57 |
1480 | aShaderProgram->SetSampler (theGlContext, |
fc73a202 |
1481 | "uGeometryVertexTexture", OpenGl_RT_GeometryVertexTexture); |
91c60b57 |
1482 | aShaderProgram->SetSampler (theGlContext, |
fc73a202 |
1483 | "uGeometryNormalTexture", OpenGl_RT_GeometryNormalTexture); |
91c60b57 |
1484 | aShaderProgram->SetSampler (theGlContext, |
25ef750e |
1485 | "uGeometryTexCrdTexture", OpenGl_RT_GeometryTexCrdTexture); |
91c60b57 |
1486 | aShaderProgram->SetSampler (theGlContext, |
25ef750e |
1487 | "uGeometryTriangTexture", OpenGl_RT_GeometryTriangTexture); |
91c60b57 |
1488 | aShaderProgram->SetSampler (theGlContext, |
84c71f29 |
1489 | "uSceneTransformTexture", OpenGl_RT_SceneTransformTexture); |
91c60b57 |
1490 | aShaderProgram->SetSampler (theGlContext, |
84c71f29 |
1491 | "uEnvironmentMapTexture", OpenGl_RT_EnvironmentMapTexture); |
91c60b57 |
1492 | aShaderProgram->SetSampler (theGlContext, |
25ef750e |
1493 | "uRaytraceMaterialTexture", OpenGl_RT_RaytraceMaterialTexture); |
91c60b57 |
1494 | aShaderProgram->SetSampler (theGlContext, |
25ef750e |
1495 | "uRaytraceLightSrcTexture", OpenGl_RT_RaytraceLightSrcTexture); |
fc73a202 |
1496 | |
91c60b57 |
1497 | aShaderProgram->SetSampler (theGlContext, |
a89742cf |
1498 | "uOpenGlColorTexture", OpenGl_RT_OpenGlColorTexture); |
91c60b57 |
1499 | aShaderProgram->SetSampler (theGlContext, |
a89742cf |
1500 | "uOpenGlDepthTexture", OpenGl_RT_OpenGlDepthTexture); |
1501 | |
fc73a202 |
1502 | if (anIndex == 1) |
1503 | { |
91c60b57 |
1504 | aShaderProgram->SetSampler (theGlContext, |
189f85a3 |
1505 | "uFSAAInputTexture", OpenGl_RT_FsaaInputTexture); |
1506 | } |
1507 | else |
1508 | { |
1509 | aShaderProgram->SetSampler (theGlContext, |
1510 | "uAccumTexture", OpenGl_RT_PrevAccumTexture); |
fc73a202 |
1511 | } |
265d4508 |
1512 | |
fc73a202 |
1513 | myUniformLocations[anIndex][OpenGl_RT_aPosition] = |
91c60b57 |
1514 | aShaderProgram->GetAttributeLocation (theGlContext, "occVertex"); |
fc73a202 |
1515 | |
1516 | myUniformLocations[anIndex][OpenGl_RT_uOriginLB] = |
91c60b57 |
1517 | aShaderProgram->GetUniformLocation (theGlContext, "uOriginLB"); |
fc73a202 |
1518 | myUniformLocations[anIndex][OpenGl_RT_uOriginRB] = |
91c60b57 |
1519 | aShaderProgram->GetUniformLocation (theGlContext, "uOriginRB"); |
fc73a202 |
1520 | myUniformLocations[anIndex][OpenGl_RT_uOriginLT] = |
91c60b57 |
1521 | aShaderProgram->GetUniformLocation (theGlContext, "uOriginLT"); |
fc73a202 |
1522 | myUniformLocations[anIndex][OpenGl_RT_uOriginRT] = |
91c60b57 |
1523 | aShaderProgram->GetUniformLocation (theGlContext, "uOriginRT"); |
fc73a202 |
1524 | myUniformLocations[anIndex][OpenGl_RT_uDirectLB] = |
91c60b57 |
1525 | aShaderProgram->GetUniformLocation (theGlContext, "uDirectLB"); |
fc73a202 |
1526 | myUniformLocations[anIndex][OpenGl_RT_uDirectRB] = |
91c60b57 |
1527 | aShaderProgram->GetUniformLocation (theGlContext, "uDirectRB"); |
fc73a202 |
1528 | myUniformLocations[anIndex][OpenGl_RT_uDirectLT] = |
91c60b57 |
1529 | aShaderProgram->GetUniformLocation (theGlContext, "uDirectLT"); |
fc73a202 |
1530 | myUniformLocations[anIndex][OpenGl_RT_uDirectRT] = |
91c60b57 |
1531 | aShaderProgram->GetUniformLocation (theGlContext, "uDirectRT"); |
25ef750e |
1532 | myUniformLocations[anIndex][OpenGl_RT_uUnviewMat] = |
91c60b57 |
1533 | aShaderProgram->GetUniformLocation (theGlContext, "uUnviewMat"); |
fc73a202 |
1534 | |
1535 | myUniformLocations[anIndex][OpenGl_RT_uSceneRad] = |
91c60b57 |
1536 | aShaderProgram->GetUniformLocation (theGlContext, "uSceneRadius"); |
fc73a202 |
1537 | myUniformLocations[anIndex][OpenGl_RT_uSceneEps] = |
91c60b57 |
1538 | aShaderProgram->GetUniformLocation (theGlContext, "uSceneEpsilon"); |
25ef750e |
1539 | myUniformLocations[anIndex][OpenGl_RT_uLightCount] = |
91c60b57 |
1540 | aShaderProgram->GetUniformLocation (theGlContext, "uLightCount"); |
25ef750e |
1541 | myUniformLocations[anIndex][OpenGl_RT_uLightAmbnt] = |
91c60b57 |
1542 | aShaderProgram->GetUniformLocation (theGlContext, "uGlobalAmbient"); |
fc73a202 |
1543 | |
1544 | myUniformLocations[anIndex][OpenGl_RT_uOffsetX] = |
91c60b57 |
1545 | aShaderProgram->GetUniformLocation (theGlContext, "uOffsetX"); |
fc73a202 |
1546 | myUniformLocations[anIndex][OpenGl_RT_uOffsetY] = |
91c60b57 |
1547 | aShaderProgram->GetUniformLocation (theGlContext, "uOffsetY"); |
fc73a202 |
1548 | myUniformLocations[anIndex][OpenGl_RT_uSamples] = |
91c60b57 |
1549 | aShaderProgram->GetUniformLocation (theGlContext, "uSamples"); |
84c71f29 |
1550 | |
189f85a3 |
1551 | myUniformLocations[anIndex][OpenGl_RT_uTexSamplersArray] = |
91c60b57 |
1552 | aShaderProgram->GetUniformLocation (theGlContext, "uTextureSamplers"); |
25ef750e |
1553 | |
189f85a3 |
1554 | myUniformLocations[anIndex][OpenGl_RT_uShadowsEnabled] = |
1555 | aShaderProgram->GetUniformLocation (theGlContext, "uShadowsEnabled"); |
1556 | myUniformLocations[anIndex][OpenGl_RT_uReflectEnabled] = |
1557 | aShaderProgram->GetUniformLocation (theGlContext, "uReflectEnabled"); |
1558 | myUniformLocations[anIndex][OpenGl_RT_uSphereMapEnabled] = |
1559 | aShaderProgram->GetUniformLocation (theGlContext, "uSphereMapEnabled"); |
1560 | myUniformLocations[anIndex][OpenGl_RT_uSphereMapForBack] = |
1561 | aShaderProgram->GetUniformLocation (theGlContext, "uSphereMapForBack"); |
8c820969 |
1562 | myUniformLocations[anIndex][OpenGl_RT_uBlockedRngEnabled] = |
1563 | aShaderProgram->GetUniformLocation (theGlContext, "uBlockedRngEnabled"); |
189f85a3 |
1564 | |
1565 | myUniformLocations[anIndex][OpenGl_RT_uSampleWeight] = |
1566 | aShaderProgram->GetUniformLocation (theGlContext, "uSampleWeight"); |
1567 | myUniformLocations[anIndex][OpenGl_RT_uFrameRndSeed] = |
1568 | aShaderProgram->GetUniformLocation (theGlContext, "uFrameRndSeed"); |
1569 | |
1570 | myUniformLocations[anIndex][OpenGl_RT_uBackColorTop] = |
1571 | aShaderProgram->GetUniformLocation (theGlContext, "uBackColorTop"); |
1572 | myUniformLocations[anIndex][OpenGl_RT_uBackColorBot] = |
1573 | aShaderProgram->GetUniformLocation (theGlContext, "uBackColorBot"); |
fc73a202 |
1574 | } |
265d4508 |
1575 | |
189f85a3 |
1576 | theGlContext->BindProgram (myOutImageProgram); |
1577 | |
1578 | myOutImageProgram->SetSampler (theGlContext, |
1579 | "uInputTexture", OpenGl_RT_PrevAccumTexture); |
1580 | |
91c60b57 |
1581 | theGlContext->BindProgram (NULL); |
fc73a202 |
1582 | } |
265d4508 |
1583 | |
91c60b57 |
1584 | if (myRaytraceInitStatus != OpenGl_RT_NONE) |
fc73a202 |
1585 | { |
91c60b57 |
1586 | return myRaytraceInitStatus == OpenGl_RT_INIT; |
fc73a202 |
1587 | } |
265d4508 |
1588 | |
fc73a202 |
1589 | const GLfloat aVertices[] = { -1.f, -1.f, 0.f, |
1590 | -1.f, 1.f, 0.f, |
1591 | 1.f, 1.f, 0.f, |
1592 | 1.f, 1.f, 0.f, |
1593 | 1.f, -1.f, 0.f, |
1594 | -1.f, -1.f, 0.f }; |
265d4508 |
1595 | |
91c60b57 |
1596 | myRaytraceScreenQuad.Init (theGlContext, 3, 6, aVertices); |
265d4508 |
1597 | |
91c60b57 |
1598 | myRaytraceInitStatus = OpenGl_RT_INIT; // initialized in normal way |
ca3c13d1 |
1599 | |
fc73a202 |
1600 | return Standard_True; |
1601 | } |
265d4508 |
1602 | |
fc73a202 |
1603 | // ======================================================================= |
189f85a3 |
1604 | // function : nullifyResource |
fc73a202 |
1605 | // purpose : |
1606 | // ======================================================================= |
189f85a3 |
1607 | inline void nullifyResource (const Handle(OpenGl_Context)& theGlContext, |
fc73a202 |
1608 | Handle(OpenGl_Resource)& theResource) |
1609 | { |
1610 | if (!theResource.IsNull()) |
1611 | { |
91c60b57 |
1612 | theResource->Release (theGlContext.operator->()); |
fc73a202 |
1613 | theResource.Nullify(); |
1614 | } |
1615 | } |
265d4508 |
1616 | |
fc73a202 |
1617 | // ======================================================================= |
189f85a3 |
1618 | // function : releaseRaytraceResources |
fc73a202 |
1619 | // purpose : Releases OpenGL/GLSL shader programs |
1620 | // ======================================================================= |
91c60b57 |
1621 | void OpenGl_View::releaseRaytraceResources (const Handle(OpenGl_Context)& theGlContext) |
fc73a202 |
1622 | { |
3c4b62a4 |
1623 | myRaytraceFBO1[0]->Release (theGlContext.operator->()); |
1624 | myRaytraceFBO1[1]->Release (theGlContext.operator->()); |
1625 | myRaytraceFBO2[0]->Release (theGlContext.operator->()); |
1626 | myRaytraceFBO2[1]->Release (theGlContext.operator->()); |
265d4508 |
1627 | |
189f85a3 |
1628 | nullifyResource (theGlContext, myRaytraceShader); |
1629 | nullifyResource (theGlContext, myPostFSAAShader); |
265d4508 |
1630 | |
189f85a3 |
1631 | nullifyResource (theGlContext, myRaytraceProgram); |
1632 | nullifyResource (theGlContext, myPostFSAAProgram); |
1633 | nullifyResource (theGlContext, myOutImageProgram); |
265d4508 |
1634 | |
189f85a3 |
1635 | nullifyResource (theGlContext, mySceneNodeInfoTexture); |
1636 | nullifyResource (theGlContext, mySceneMinPointTexture); |
1637 | nullifyResource (theGlContext, mySceneMaxPointTexture); |
265d4508 |
1638 | |
189f85a3 |
1639 | nullifyResource (theGlContext, myGeometryVertexTexture); |
1640 | nullifyResource (theGlContext, myGeometryNormalTexture); |
1641 | nullifyResource (theGlContext, myGeometryTexCrdTexture); |
1642 | nullifyResource (theGlContext, myGeometryTriangTexture); |
1643 | nullifyResource (theGlContext, mySceneTransformTexture); |
265d4508 |
1644 | |
189f85a3 |
1645 | nullifyResource (theGlContext, myRaytraceLightSrcTexture); |
1646 | nullifyResource (theGlContext, myRaytraceMaterialTexture); |
265d4508 |
1647 | |
47e9c178 |
1648 | myRaytraceGeometry.ReleaseResources (theGlContext); |
1649 | |
fc73a202 |
1650 | if (myRaytraceScreenQuad.IsValid()) |
91c60b57 |
1651 | myRaytraceScreenQuad.Release (theGlContext.operator->()); |
1652 | } |
1653 | |
1654 | // ======================================================================= |
bf02aa7d |
1655 | // function : updateRaytraceBuffers |
1656 | // purpose : Updates auxiliary OpenGL frame buffers. |
91c60b57 |
1657 | // ======================================================================= |
bf02aa7d |
1658 | Standard_Boolean OpenGl_View::updateRaytraceBuffers (const Standard_Integer theSizeX, |
91c60b57 |
1659 | const Standard_Integer theSizeY, |
1660 | const Handle(OpenGl_Context)& theGlContext) |
1661 | { |
bf02aa7d |
1662 | // Auxiliary buffers are not used. |
1663 | if (!myRaytraceParameters.GlobalIllumination && !myRenderParams.IsAntialiasingEnabled) |
91c60b57 |
1664 | { |
bf02aa7d |
1665 | myRaytraceFBO1[0]->Release (theGlContext.operator->()); |
1666 | myRaytraceFBO2[0]->Release (theGlContext.operator->()); |
1667 | myRaytraceFBO1[1]->Release (theGlContext.operator->()); |
1668 | myRaytraceFBO2[1]->Release (theGlContext.operator->()); |
1669 | return Standard_True; |
1670 | } |
1671 | |
3c4b62a4 |
1672 | myRaytraceFBO1[0]->InitLazy (theGlContext, theSizeX, theSizeY, GL_RGBA32F, myFboDepthFormat); |
1673 | myRaytraceFBO2[0]->InitLazy (theGlContext, theSizeX, theSizeY, GL_RGBA32F, myFboDepthFormat); |
bf02aa7d |
1674 | |
1675 | // Init second set of buffers for stereographic rendering. |
1676 | if (myCamera->ProjectionType() == Graphic3d_Camera::Projection_Stereo) |
1677 | { |
3c4b62a4 |
1678 | myRaytraceFBO1[1]->InitLazy (theGlContext, theSizeX, theSizeY, GL_RGBA32F, myFboDepthFormat); |
1679 | myRaytraceFBO2[1]->InitLazy (theGlContext, theSizeX, theSizeY, GL_RGBA32F, myFboDepthFormat); |
bf02aa7d |
1680 | } |
1681 | else |
1682 | { |
1683 | myRaytraceFBO1[1]->Release (theGlContext.operator->()); |
1684 | myRaytraceFBO2[1]->Release (theGlContext.operator->()); |
91c60b57 |
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 | |
91c60b57 |
1734 | theOrigins[aOriginIndex++] = OpenGl_Vec3 (static_cast<GLfloat> (aOrigin.x()), |
1735 | static_cast<GLfloat> (aOrigin.y()), |
1736 | static_cast<GLfloat> (aOrigin.z())); |
1737 | |
b0dc79bc |
1738 | theDirects[aDirectIndex++] = OpenGl_Vec3 (static_cast<GLfloat> (aDirect.x()), |
1739 | static_cast<GLfloat> (aDirect.y()), |
1740 | static_cast<GLfloat> (aDirect.z())); |
91c60b57 |
1741 | } |
1742 | } |
fc73a202 |
1743 | } |
265d4508 |
1744 | |
fc73a202 |
1745 | // ======================================================================= |
189f85a3 |
1746 | // function : uploadRaytraceData |
fc73a202 |
1747 | // purpose : Uploads ray-trace data to the GPU |
1748 | // ======================================================================= |
91c60b57 |
1749 | Standard_Boolean OpenGl_View::uploadRaytraceData (const Handle(OpenGl_Context)& theGlContext) |
fc73a202 |
1750 | { |
91c60b57 |
1751 | if (!theGlContext->IsGlGreaterEqual (3, 1)) |
fc73a202 |
1752 | { |
265d4508 |
1753 | #ifdef RAY_TRACE_PRINT_INFO |
fc73a202 |
1754 | std::cout << "Error: OpenGL version is less than 3.1" << std::endl; |
265d4508 |
1755 | #endif |
fc73a202 |
1756 | return Standard_False; |
e276548b |
1757 | } |
1758 | |
189f85a3 |
1759 | myAccumFrames = 0; // accumulation should be restarted |
1760 | |
25ef750e |
1761 | ///////////////////////////////////////////////////////////////////////////// |
1762 | // Prepare OpenGL textures |
1763 | |
91c60b57 |
1764 | if (theGlContext->arbTexBindless != NULL) |
25ef750e |
1765 | { |
1766 | // If OpenGL driver supports bindless textures we need |
1767 | // to get unique 64- bit handles for using on the GPU |
91c60b57 |
1768 | if (!myRaytraceGeometry.UpdateTextureHandles (theGlContext)) |
25ef750e |
1769 | { |
1770 | #ifdef RAY_TRACE_PRINT_INFO |
1771 | std::cout << "Error: Failed to get OpenGL texture handles" << std::endl; |
1772 | #endif |
1773 | return Standard_False; |
1774 | } |
1775 | } |
1776 | |
265d4508 |
1777 | ///////////////////////////////////////////////////////////////////////////// |
e2da917a |
1778 | // Create OpenGL BVH buffers |
265d4508 |
1779 | |
e2da917a |
1780 | if (mySceneNodeInfoTexture.IsNull()) // create scene BVH buffers |
e276548b |
1781 | { |
e2da917a |
1782 | mySceneNodeInfoTexture = new OpenGl_TextureBufferArb; |
1783 | mySceneMinPointTexture = new OpenGl_TextureBufferArb; |
1784 | mySceneMaxPointTexture = new OpenGl_TextureBufferArb; |
84c71f29 |
1785 | mySceneTransformTexture = new OpenGl_TextureBufferArb; |
265d4508 |
1786 | |
91c60b57 |
1787 | if (!mySceneNodeInfoTexture->Create (theGlContext) |
1788 | || !mySceneMinPointTexture->Create (theGlContext) |
1789 | || !mySceneMaxPointTexture->Create (theGlContext) |
1790 | || !mySceneTransformTexture->Create (theGlContext)) |
e276548b |
1791 | { |
fc73a202 |
1792 | #ifdef RAY_TRACE_PRINT_INFO |
e2da917a |
1793 | std::cout << "Error: Failed to create scene BVH buffers" << std::endl; |
fc73a202 |
1794 | #endif |
1795 | return Standard_False; |
1796 | } |
1797 | } |
5322131b |
1798 | |
e2da917a |
1799 | if (myGeometryVertexTexture.IsNull()) // create geometry buffers |
265d4508 |
1800 | { |
fc73a202 |
1801 | myGeometryVertexTexture = new OpenGl_TextureBufferArb; |
1802 | myGeometryNormalTexture = new OpenGl_TextureBufferArb; |
25ef750e |
1803 | myGeometryTexCrdTexture = new OpenGl_TextureBufferArb; |
fc73a202 |
1804 | myGeometryTriangTexture = new OpenGl_TextureBufferArb; |
e276548b |
1805 | |
91c60b57 |
1806 | if (!myGeometryVertexTexture->Create (theGlContext) |
1807 | || !myGeometryNormalTexture->Create (theGlContext) |
1808 | || !myGeometryTexCrdTexture->Create (theGlContext) |
1809 | || !myGeometryTriangTexture->Create (theGlContext)) |
fc73a202 |
1810 | { |
1811 | #ifdef RAY_TRACE_PRINT_INFO |
1812 | std::cout << "Error: Failed to create buffers for triangulation data" << std::endl; |
1813 | #endif |
1814 | return Standard_False; |
1815 | } |
265d4508 |
1816 | } |
5322131b |
1817 | |
e2da917a |
1818 | if (myRaytraceMaterialTexture.IsNull()) // create material buffer |
fc73a202 |
1819 | { |
1820 | myRaytraceMaterialTexture = new OpenGl_TextureBufferArb; |
e276548b |
1821 | |
91c60b57 |
1822 | if (!myRaytraceMaterialTexture->Create (theGlContext)) |
fc73a202 |
1823 | { |
1824 | #ifdef RAY_TRACE_PRINT_INFO |
1825 | std::cout << "Error: Failed to create buffers for material data" << std::endl; |
e276548b |
1826 | #endif |
fc73a202 |
1827 | return Standard_False; |
1828 | } |
1829 | } |
e2da917a |
1830 | |
84c71f29 |
1831 | ///////////////////////////////////////////////////////////////////////////// |
1832 | // Write transform buffer |
1833 | |
1834 | BVH_Mat4f* aNodeTransforms = new BVH_Mat4f[myRaytraceGeometry.Size()]; |
84c71f29 |
1835 | |
e2da917a |
1836 | bool aResult = true; |
1837 | |
84c71f29 |
1838 | for (Standard_Integer anElemIndex = 0; anElemIndex < myRaytraceGeometry.Size(); ++anElemIndex) |
1839 | { |
1840 | OpenGl_TriangleSet* aTriangleSet = dynamic_cast<OpenGl_TriangleSet*> ( |
1841 | myRaytraceGeometry.Objects().ChangeValue (anElemIndex).operator->()); |
1842 | |
1843 | const BVH_Transform<Standard_ShortReal, 4>* aTransform = |
1844 | dynamic_cast<const BVH_Transform<Standard_ShortReal, 4>* > (aTriangleSet->Properties().operator->()); |
1845 | |
1846 | Standard_ASSERT_RETURN (aTransform != NULL, |
1847 | "OpenGl_TriangleSet does not contain transform", Standard_False); |
1848 | |
1849 | aNodeTransforms[anElemIndex] = aTransform->Inversed(); |
84c71f29 |
1850 | } |
1851 | |
91c60b57 |
1852 | aResult &= mySceneTransformTexture->Init (theGlContext, 4, |
84c71f29 |
1853 | myRaytraceGeometry.Size() * 4, reinterpret_cast<const GLfloat*> (aNodeTransforms)); |
1854 | |
25ef750e |
1855 | delete [] aNodeTransforms; |
84c71f29 |
1856 | |
1857 | ///////////////////////////////////////////////////////////////////////////// |
bc8c79bb |
1858 | // Write geometry and bottom-level BVH buffers |
84c71f29 |
1859 | |
fc73a202 |
1860 | Standard_Size aTotalVerticesNb = 0; |
1861 | Standard_Size aTotalElementsNb = 0; |
1862 | Standard_Size aTotalBVHNodesNb = 0; |
265d4508 |
1863 | |
fc73a202 |
1864 | for (Standard_Integer anElemIndex = 0; anElemIndex < myRaytraceGeometry.Size(); ++anElemIndex) |
1865 | { |
1866 | OpenGl_TriangleSet* aTriangleSet = dynamic_cast<OpenGl_TriangleSet*> ( |
1867 | myRaytraceGeometry.Objects().ChangeValue (anElemIndex).operator->()); |
265d4508 |
1868 | |
fc73a202 |
1869 | Standard_ASSERT_RETURN (aTriangleSet != NULL, |
1870 | "Error: Failed to get triangulation of OpenGL element", Standard_False); |
1871 | |
1872 | aTotalVerticesNb += aTriangleSet->Vertices.size(); |
1873 | aTotalElementsNb += aTriangleSet->Elements.size(); |
e276548b |
1874 | |
fc73a202 |
1875 | Standard_ASSERT_RETURN (!aTriangleSet->BVH().IsNull(), |
1876 | "Error: Failed to get bottom-level BVH of OpenGL element", Standard_False); |
265d4508 |
1877 | |
fc73a202 |
1878 | aTotalBVHNodesNb += aTriangleSet->BVH()->NodeInfoBuffer().size(); |
1879 | } |
e276548b |
1880 | |
e2da917a |
1881 | aTotalBVHNodesNb += myRaytraceGeometry.BVH()->NodeInfoBuffer().size(); |
1882 | |
fc73a202 |
1883 | if (aTotalBVHNodesNb != 0) |
e276548b |
1884 | { |
e2da917a |
1885 | aResult &= mySceneNodeInfoTexture->Init ( |
91c60b57 |
1886 | theGlContext, 4, GLsizei (aTotalBVHNodesNb), static_cast<const GLuint*> (NULL)); |
e2da917a |
1887 | aResult &= mySceneMinPointTexture->Init ( |
91c60b57 |
1888 | theGlContext, 3, GLsizei (aTotalBVHNodesNb), static_cast<const GLfloat*> (NULL)); |
e2da917a |
1889 | aResult &= mySceneMaxPointTexture->Init ( |
91c60b57 |
1890 | theGlContext, 3, GLsizei (aTotalBVHNodesNb), static_cast<const GLfloat*> (NULL)); |
fc73a202 |
1891 | } |
265d4508 |
1892 | |
fc73a202 |
1893 | if (!aResult) |
1894 | { |
1895 | #ifdef RAY_TRACE_PRINT_INFO |
1896 | std::cout << "Error: Failed to upload buffers for bottom-level scene BVH" << std::endl; |
1897 | #endif |
1898 | return Standard_False; |
1899 | } |
e276548b |
1900 | |
fc73a202 |
1901 | if (aTotalElementsNb != 0) |
1902 | { |
25ef750e |
1903 | aResult &= myGeometryTriangTexture->Init ( |
91c60b57 |
1904 | theGlContext, 4, GLsizei (aTotalElementsNb), static_cast<const GLuint*> (NULL)); |
fc73a202 |
1905 | } |
265d4508 |
1906 | |
fc73a202 |
1907 | if (aTotalVerticesNb != 0) |
1908 | { |
25ef750e |
1909 | aResult &= myGeometryVertexTexture->Init ( |
91c60b57 |
1910 | theGlContext, 3, GLsizei (aTotalVerticesNb), static_cast<const GLfloat*> (NULL)); |
25ef750e |
1911 | aResult &= myGeometryNormalTexture->Init ( |
91c60b57 |
1912 | theGlContext, 3, GLsizei (aTotalVerticesNb), static_cast<const GLfloat*> (NULL)); |
25ef750e |
1913 | aResult &= myGeometryTexCrdTexture->Init ( |
91c60b57 |
1914 | theGlContext, 2, GLsizei (aTotalVerticesNb), static_cast<const GLfloat*> (NULL)); |
fc73a202 |
1915 | } |
265d4508 |
1916 | |
fc73a202 |
1917 | if (!aResult) |
1918 | { |
1919 | #ifdef RAY_TRACE_PRINT_INFO |
1920 | std::cout << "Error: Failed to upload buffers for scene geometry" << std::endl; |
1921 | #endif |
1922 | return Standard_False; |
1923 | } |
265d4508 |
1924 | |
e2da917a |
1925 | const NCollection_Handle<BVH_Tree<Standard_ShortReal, 3> >& aBVH = myRaytraceGeometry.BVH(); |
91c60b57 |
1926 | |
1927 | if (aBVH->Length() > 0) |
1e99558f |
1928 | { |
91c60b57 |
1929 | aResult &= mySceneNodeInfoTexture->SubData (theGlContext, 0, aBVH->Length(), |
1e99558f |
1930 | reinterpret_cast<const GLuint*> (&aBVH->NodeInfoBuffer().front())); |
91c60b57 |
1931 | aResult &= mySceneMinPointTexture->SubData (theGlContext, 0, aBVH->Length(), |
1e99558f |
1932 | reinterpret_cast<const GLfloat*> (&aBVH->MinPointBuffer().front())); |
91c60b57 |
1933 | aResult &= mySceneMaxPointTexture->SubData (theGlContext, 0, aBVH->Length(), |
1e99558f |
1934 | reinterpret_cast<const GLfloat*> (&aBVH->MaxPointBuffer().front())); |
1935 | } |
e2da917a |
1936 | |
fc73a202 |
1937 | for (Standard_Integer aNodeIdx = 0; aNodeIdx < aBVH->Length(); ++aNodeIdx) |
1938 | { |
1939 | if (!aBVH->IsOuter (aNodeIdx)) |
1940 | continue; |
265d4508 |
1941 | |
fc73a202 |
1942 | OpenGl_TriangleSet* aTriangleSet = myRaytraceGeometry.TriangleSet (aNodeIdx); |
e276548b |
1943 | |
fc73a202 |
1944 | Standard_ASSERT_RETURN (aTriangleSet != NULL, |
1945 | "Error: Failed to get triangulation of OpenGL element", Standard_False); |
e276548b |
1946 | |
e2da917a |
1947 | Standard_Integer aBVHOffset = myRaytraceGeometry.AccelerationOffset (aNodeIdx); |
e276548b |
1948 | |
fc73a202 |
1949 | Standard_ASSERT_RETURN (aBVHOffset != OpenGl_RaytraceGeometry::INVALID_OFFSET, |
1950 | "Error: Failed to get offset for bottom-level BVH", Standard_False); |
e276548b |
1951 | |
e2da917a |
1952 | const Standard_Integer aBvhBuffersSize = aTriangleSet->BVH()->Length(); |
265d4508 |
1953 | |
e2da917a |
1954 | if (aBvhBuffersSize != 0) |
fc73a202 |
1955 | { |
91c60b57 |
1956 | aResult &= mySceneNodeInfoTexture->SubData (theGlContext, aBVHOffset, aBvhBuffersSize, |
1957 | reinterpret_cast<const GLuint*> (&aTriangleSet->BVH()->NodeInfoBuffer().front())); |
1958 | aResult &= mySceneMinPointTexture->SubData (theGlContext, aBVHOffset, aBvhBuffersSize, |
1959 | reinterpret_cast<const GLfloat*> (&aTriangleSet->BVH()->MinPointBuffer().front())); |
1960 | aResult &= mySceneMaxPointTexture->SubData (theGlContext, aBVHOffset, aBvhBuffersSize, |
1961 | reinterpret_cast<const GLfloat*> (&aTriangleSet->BVH()->MaxPointBuffer().front())); |
1962 | |
fc73a202 |
1963 | if (!aResult) |
e276548b |
1964 | { |
fc73a202 |
1965 | #ifdef RAY_TRACE_PRINT_INFO |
1966 | std::cout << "Error: Failed to upload buffers for bottom-level scene BVHs" << std::endl; |
1967 | #endif |
e276548b |
1968 | return Standard_False; |
1969 | } |
1970 | } |
1971 | |
fc73a202 |
1972 | const Standard_Integer aVerticesOffset = myRaytraceGeometry.VerticesOffset (aNodeIdx); |
265d4508 |
1973 | |
fc73a202 |
1974 | Standard_ASSERT_RETURN (aVerticesOffset != OpenGl_RaytraceGeometry::INVALID_OFFSET, |
1975 | "Error: Failed to get offset for triangulation vertices of OpenGL element", Standard_False); |
265d4508 |
1976 | |
fc73a202 |
1977 | if (!aTriangleSet->Vertices.empty()) |
1978 | { |
91c60b57 |
1979 | aResult &= myGeometryNormalTexture->SubData (theGlContext, aVerticesOffset, |
1980 | GLsizei (aTriangleSet->Normals.size()), reinterpret_cast<const GLfloat*> (&aTriangleSet->Normals.front())); |
1981 | aResult &= myGeometryTexCrdTexture->SubData (theGlContext, aVerticesOffset, |
1982 | GLsizei (aTriangleSet->TexCrds.size()), reinterpret_cast<const GLfloat*> (&aTriangleSet->TexCrds.front())); |
1983 | aResult &= myGeometryVertexTexture->SubData (theGlContext, aVerticesOffset, |
1984 | GLsizei (aTriangleSet->Vertices.size()), reinterpret_cast<const GLfloat*> (&aTriangleSet->Vertices.front())); |
fc73a202 |
1985 | } |
e276548b |
1986 | |
fc73a202 |
1987 | const Standard_Integer anElementsOffset = myRaytraceGeometry.ElementsOffset (aNodeIdx); |
265d4508 |
1988 | |
fc73a202 |
1989 | Standard_ASSERT_RETURN (anElementsOffset != OpenGl_RaytraceGeometry::INVALID_OFFSET, |
1990 | "Error: Failed to get offset for triangulation elements of OpenGL element", Standard_False); |
e276548b |
1991 | |
fc73a202 |
1992 | if (!aTriangleSet->Elements.empty()) |
e276548b |
1993 | { |
91c60b57 |
1994 | aResult &= myGeometryTriangTexture->SubData (theGlContext, anElementsOffset, GLsizei (aTriangleSet->Elements.size()), |
5cff985a |
1995 | reinterpret_cast<const GLuint*> (&aTriangleSet->Elements.front())); |
e276548b |
1996 | } |
265d4508 |
1997 | |
fc73a202 |
1998 | if (!aResult) |
1999 | { |
2000 | #ifdef RAY_TRACE_PRINT_INFO |
2001 | std::cout << "Error: Failed to upload triangulation buffers for OpenGL element" << std::endl; |
e276548b |
2002 | #endif |
fc73a202 |
2003 | return Standard_False; |
2004 | } |
e276548b |
2005 | } |
e276548b |
2006 | |
25ef750e |
2007 | ///////////////////////////////////////////////////////////////////////////// |
2008 | // Write material buffer |
2009 | |
fc73a202 |
2010 | if (myRaytraceGeometry.Materials.size() != 0) |
2011 | { |
91c60b57 |
2012 | aResult &= myRaytraceMaterialTexture->Init (theGlContext, 4, |
189f85a3 |
2013 | GLsizei (myRaytraceGeometry.Materials.size() * 18), myRaytraceGeometry.Materials.front().Packed()); |
25ef750e |
2014 | |
fc73a202 |
2015 | if (!aResult) |
2016 | { |
2017 | #ifdef RAY_TRACE_PRINT_INFO |
2018 | std::cout << "Error: Failed to upload material buffer" << std::endl; |
2019 | #endif |
2020 | return Standard_False; |
2021 | } |
2022 | } |
e276548b |
2023 | |
fc73a202 |
2024 | myIsRaytraceDataValid = myRaytraceGeometry.Objects().Size() != 0; |
e276548b |
2025 | |
fc73a202 |
2026 | #ifdef RAY_TRACE_PRINT_INFO |
e276548b |
2027 | |
fc73a202 |
2028 | Standard_ShortReal aMemUsed = 0.f; |
e276548b |
2029 | |
fc73a202 |
2030 | for (Standard_Integer anElemIdx = 0; anElemIdx < myRaytraceGeometry.Size(); ++anElemIdx) |
2031 | { |
2032 | OpenGl_TriangleSet* aTriangleSet = dynamic_cast<OpenGl_TriangleSet*> ( |
2033 | myRaytraceGeometry.Objects().ChangeValue (anElemIdx).operator->()); |
e276548b |
2034 | |
fc73a202 |
2035 | aMemUsed += static_cast<Standard_ShortReal> ( |
25ef750e |
2036 | aTriangleSet->Vertices.size() * sizeof (BVH_Vec3f)); |
fc73a202 |
2037 | aMemUsed += static_cast<Standard_ShortReal> ( |
25ef750e |
2038 | aTriangleSet->Normals.size() * sizeof (BVH_Vec3f)); |
2039 | aMemUsed += static_cast<Standard_ShortReal> ( |
2040 | aTriangleSet->TexCrds.size() * sizeof (BVH_Vec2f)); |
fc73a202 |
2041 | aMemUsed += static_cast<Standard_ShortReal> ( |
2042 | aTriangleSet->Elements.size() * sizeof (BVH_Vec4i)); |
e276548b |
2043 | |
fc73a202 |
2044 | aMemUsed += static_cast<Standard_ShortReal> ( |
2045 | aTriangleSet->BVH()->NodeInfoBuffer().size() * sizeof (BVH_Vec4i)); |
2046 | aMemUsed += static_cast<Standard_ShortReal> ( |
25ef750e |
2047 | aTriangleSet->BVH()->MinPointBuffer().size() * sizeof (BVH_Vec3f)); |
fc73a202 |
2048 | aMemUsed += static_cast<Standard_ShortReal> ( |
25ef750e |
2049 | aTriangleSet->BVH()->MaxPointBuffer().size() * sizeof (BVH_Vec3f)); |
fc73a202 |
2050 | } |
e276548b |
2051 | |
fc73a202 |
2052 | aMemUsed += static_cast<Standard_ShortReal> ( |
2053 | myRaytraceGeometry.BVH()->NodeInfoBuffer().size() * sizeof (BVH_Vec4i)); |
2054 | aMemUsed += static_cast<Standard_ShortReal> ( |
25ef750e |
2055 | myRaytraceGeometry.BVH()->MinPointBuffer().size() * sizeof (BVH_Vec3f)); |
fc73a202 |
2056 | aMemUsed += static_cast<Standard_ShortReal> ( |
25ef750e |
2057 | myRaytraceGeometry.BVH()->MaxPointBuffer().size() * sizeof (BVH_Vec3f)); |
e276548b |
2058 | |
fc73a202 |
2059 | std::cout << "GPU Memory Used (MB): ~" << aMemUsed / 1048576 << std::endl; |
e276548b |
2060 | |
fc73a202 |
2061 | #endif |
e276548b |
2062 | |
fc73a202 |
2063 | return aResult; |
2064 | } |
e276548b |
2065 | |
fc73a202 |
2066 | // ======================================================================= |
189f85a3 |
2067 | // function : updateRaytraceLightSources |
91c60b57 |
2068 | // purpose : Updates 3D scene light sources for ray-tracing |
fc73a202 |
2069 | // ======================================================================= |
91c60b57 |
2070 | Standard_Boolean OpenGl_View::updateRaytraceLightSources (const OpenGl_Mat4& theInvModelView, const Handle(OpenGl_Context)& theGlContext) |
fc73a202 |
2071 | { |
91c60b57 |
2072 | myRaytraceGeometry.Sources.clear(); |
2073 | |
2074 | myRaytraceGeometry.Ambient = BVH_Vec4f (0.0f, 0.0f, 0.0f, 0.0f); |
2075 | |
c357e426 |
2076 | OpenGl_ListOfLight::Iterator aLightIter (myShadingModel == Graphic3d_TOSM_NONE ? OpenGl_NoShadingLight() : myLights); |
2077 | for (; aLightIter.More(); aLightIter.Next()) |
91c60b57 |
2078 | { |
189f85a3 |
2079 | const OpenGl_Light& aLight = aLightIter.Value(); |
91c60b57 |
2080 | |
c357e426 |
2081 | if (aLight.Type == Graphic3d_TOLS_AMBIENT) |
91c60b57 |
2082 | { |
189f85a3 |
2083 | myRaytraceGeometry.Ambient += BVH_Vec4f (aLight.Color.r() * aLight.Intensity, |
2084 | aLight.Color.g() * aLight.Intensity, |
2085 | aLight.Color.b() * aLight.Intensity, |
91c60b57 |
2086 | 0.0f); |
2087 | continue; |
2088 | } |
2089 | |
189f85a3 |
2090 | BVH_Vec4f aDiffuse (aLight.Color.r() * aLight.Intensity, |
2091 | aLight.Color.g() * aLight.Intensity, |
2092 | aLight.Color.b() * aLight.Intensity, |
91c60b57 |
2093 | 1.0f); |
2094 | |
2095 | BVH_Vec4f aPosition (-aLight.Direction.x(), |
2096 | -aLight.Direction.y(), |
2097 | -aLight.Direction.z(), |
2098 | 0.0f); |
2099 | |
c357e426 |
2100 | if (aLight.Type != Graphic3d_TOLS_DIRECTIONAL) |
91c60b57 |
2101 | { |
2102 | aPosition = BVH_Vec4f (aLight.Position.x(), |
2103 | aLight.Position.y(), |
2104 | aLight.Position.z(), |
2105 | 1.0f); |
189f85a3 |
2106 | |
2107 | // store smoothing radius in w-component |
2108 | aDiffuse.w() = Max (aLight.Smoothness, 0.f); |
2109 | } |
2110 | else |
2111 | { |
2112 | // store cosine of smoothing angle in w-component |
2113 | aDiffuse.w() = cosf (Min (Max (aLight.Smoothness, 0.f), static_cast<Standard_ShortReal> (M_PI / 2.0))); |
91c60b57 |
2114 | } |
2115 | |
2116 | if (aLight.IsHeadlight) |
2117 | { |
2118 | aPosition = theInvModelView * aPosition; |
2119 | } |
2120 | |
2121 | myRaytraceGeometry.Sources.push_back (OpenGl_RaytraceLight (aDiffuse, aPosition)); |
2122 | } |
2123 | |
2124 | if (myRaytraceLightSrcTexture.IsNull()) // create light source buffer |
2125 | { |
2126 | myRaytraceLightSrcTexture = new OpenGl_TextureBufferArb; |
2127 | |
2128 | if (!myRaytraceLightSrcTexture->Create (theGlContext)) |
2129 | { |
2130 | #ifdef RAY_TRACE_PRINT_INFO |
2131 | std::cout << "Error: Failed to create light source buffer" << std::endl; |
2132 | #endif |
2133 | return Standard_False; |
2134 | } |
2135 | } |
189f85a3 |
2136 | |
91c60b57 |
2137 | if (myRaytraceGeometry.Sources.size() != 0) |
fc73a202 |
2138 | { |
91c60b57 |
2139 | const GLfloat* aDataPtr = myRaytraceGeometry.Sources.front().Packed(); |
2140 | if (!myRaytraceLightSrcTexture->Init (theGlContext, 4, GLsizei (myRaytraceGeometry.Sources.size() * 2), aDataPtr)) |
2141 | { |
2142 | #ifdef RAY_TRACE_PRINT_INFO |
2143 | std::cout << "Error: Failed to upload light source buffer" << std::endl; |
2144 | #endif |
2145 | return Standard_False; |
2146 | } |
fc73a202 |
2147 | } |
e276548b |
2148 | |
fc73a202 |
2149 | return Standard_True; |
e276548b |
2150 | } |
2151 | |
2152 | // ======================================================================= |
189f85a3 |
2153 | // function : updateRaytraceEnvironmentMap |
91c60b57 |
2154 | // purpose : Updates environment map for ray-tracing |
e276548b |
2155 | // ======================================================================= |
91c60b57 |
2156 | Standard_Boolean OpenGl_View::updateRaytraceEnvironmentMap (const Handle(OpenGl_Context)& theGlContext) |
e276548b |
2157 | { |
91c60b57 |
2158 | Standard_Boolean aResult = Standard_True; |
e276548b |
2159 | |
91c60b57 |
2160 | if (!myToUpdateEnvironmentMap) |
e276548b |
2161 | { |
91c60b57 |
2162 | return aResult; |
2163 | } |
e276548b |
2164 | |
91c60b57 |
2165 | for (Standard_Integer anIdx = 0; anIdx < 2; ++anIdx) |
2166 | { |
2167 | const Handle(OpenGl_ShaderProgram)& aProgram = |
2168 | anIdx == 0 ? myRaytraceProgram : myPostFSAAProgram; |
fc73a202 |
2169 | |
91c60b57 |
2170 | if (!aProgram.IsNull()) |
2171 | { |
2172 | aResult &= theGlContext->BindProgram (aProgram); |
e276548b |
2173 | |
c357e426 |
2174 | if (!myTextureEnv.IsNull() && mySurfaceDetail != Graphic3d_TOD_NONE) |
91c60b57 |
2175 | { |
2176 | myTextureEnv->Bind (theGlContext, |
2177 | GL_TEXTURE0 + OpenGl_RT_EnvironmentMapTexture); |
b5ac8292 |
2178 | |
91c60b57 |
2179 | aResult &= aProgram->SetUniform (theGlContext, |
189f85a3 |
2180 | myUniformLocations[anIdx][OpenGl_RT_uSphereMapEnabled], 1); |
91c60b57 |
2181 | } |
2182 | else |
2183 | { |
2184 | aResult &= aProgram->SetUniform (theGlContext, |
189f85a3 |
2185 | myUniformLocations[anIdx][OpenGl_RT_uSphereMapEnabled], 0); |
91c60b57 |
2186 | } |
2187 | } |
2188 | } |
e276548b |
2189 | |
91c60b57 |
2190 | myToUpdateEnvironmentMap = Standard_False; |
e276548b |
2191 | |
91c60b57 |
2192 | theGlContext->BindProgram (NULL); |
fc73a202 |
2193 | |
91c60b57 |
2194 | return aResult; |
fc73a202 |
2195 | } |
2196 | |
25ef750e |
2197 | // ======================================================================= |
189f85a3 |
2198 | // function : setUniformState |
25ef750e |
2199 | // purpose : Sets uniform state for the given ray-tracing shader program |
2200 | // ======================================================================= |
c357e426 |
2201 | Standard_Boolean OpenGl_View::setUniformState (const OpenGl_Vec3* theOrigins, |
91c60b57 |
2202 | const OpenGl_Vec3* theDirects, |
2203 | const OpenGl_Mat4& theUnviewMat, |
2204 | const Standard_Integer theProgramId, |
2205 | const Handle(OpenGl_Context)& theGlContext) |
25ef750e |
2206 | { |
91c60b57 |
2207 | Handle(OpenGl_ShaderProgram)& theProgram = |
2208 | theProgramId == 0 ? myRaytraceProgram : myPostFSAAProgram; |
2209 | |
2210 | if (theProgram.IsNull()) |
25ef750e |
2211 | { |
2212 | return Standard_False; |
2213 | } |
2214 | |
91c60b57 |
2215 | const Standard_Integer aLightSourceBufferSize = |
2216 | static_cast<Standard_Integer> (myRaytraceGeometry.Sources.size()); |
2217 | |
25ef750e |
2218 | // Set camera state |
189f85a3 |
2219 | theProgram->SetUniform (theGlContext, |
91c60b57 |
2220 | myUniformLocations[theProgramId][OpenGl_RT_uOriginLB], theOrigins[0]); |
189f85a3 |
2221 | theProgram->SetUniform (theGlContext, |
91c60b57 |
2222 | myUniformLocations[theProgramId][OpenGl_RT_uOriginRB], theOrigins[1]); |
189f85a3 |
2223 | theProgram->SetUniform (theGlContext, |
91c60b57 |
2224 | myUniformLocations[theProgramId][OpenGl_RT_uOriginLT], theOrigins[2]); |
189f85a3 |
2225 | theProgram->SetUniform (theGlContext, |
91c60b57 |
2226 | myUniformLocations[theProgramId][OpenGl_RT_uOriginRT], theOrigins[3]); |
189f85a3 |
2227 | theProgram->SetUniform (theGlContext, |
91c60b57 |
2228 | myUniformLocations[theProgramId][OpenGl_RT_uDirectLB], theDirects[0]); |
189f85a3 |
2229 | theProgram->SetUniform (theGlContext, |
91c60b57 |
2230 | myUniformLocations[theProgramId][OpenGl_RT_uDirectRB], theDirects[1]); |
189f85a3 |
2231 | theProgram->SetUniform (theGlContext, |
91c60b57 |
2232 | myUniformLocations[theProgramId][OpenGl_RT_uDirectLT], theDirects[2]); |
189f85a3 |
2233 | theProgram->SetUniform (theGlContext, |
91c60b57 |
2234 | myUniformLocations[theProgramId][OpenGl_RT_uDirectRT], theDirects[3]); |
189f85a3 |
2235 | theProgram->SetUniform (theGlContext, |
91c60b57 |
2236 | myUniformLocations[theProgramId][OpenGl_RT_uUnviewMat], theUnviewMat); |
312a4043 |
2237 | |
25ef750e |
2238 | // Set scene parameters |
189f85a3 |
2239 | theProgram->SetUniform (theGlContext, |
91c60b57 |
2240 | myUniformLocations[theProgramId][OpenGl_RT_uSceneRad], myRaytraceSceneRadius); |
189f85a3 |
2241 | theProgram->SetUniform (theGlContext, |
91c60b57 |
2242 | myUniformLocations[theProgramId][OpenGl_RT_uSceneEps], myRaytraceSceneEpsilon); |
189f85a3 |
2243 | theProgram->SetUniform (theGlContext, |
91c60b57 |
2244 | myUniformLocations[theProgramId][OpenGl_RT_uLightCount], aLightSourceBufferSize); |
189f85a3 |
2245 | theProgram->SetUniform (theGlContext, |
91c60b57 |
2246 | myUniformLocations[theProgramId][OpenGl_RT_uLightAmbnt], myRaytraceGeometry.Ambient); |
2247 | |
2248 | // Set run-time rendering options |
189f85a3 |
2249 | theProgram->SetUniform (theGlContext, |
c357e426 |
2250 | myUniformLocations[theProgramId][OpenGl_RT_uShadowsEnabled], myRenderParams.IsShadowEnabled ? 1 : 0); |
189f85a3 |
2251 | theProgram->SetUniform (theGlContext, |
c357e426 |
2252 | myUniformLocations[theProgramId][OpenGl_RT_uReflectEnabled], myRenderParams.IsReflectionEnabled ? 1 : 0); |
25ef750e |
2253 | |
c357e426 |
2254 | if (myRenderParams.IsGlobalIlluminationEnabled) |
8c820969 |
2255 | { |
2256 | theProgram->SetUniform (theGlContext, |
c357e426 |
2257 | myUniformLocations[theProgramId][OpenGl_RT_uBlockedRngEnabled], myRenderParams.CoherentPathTracingMode ? 1 : 0); |
8c820969 |
2258 | } |
2259 | |
25ef750e |
2260 | // Set array of 64-bit texture handles |
91c60b57 |
2261 | if (theGlContext->arbTexBindless != NULL && myRaytraceGeometry.HasTextures()) |
25ef750e |
2262 | { |
47e9c178 |
2263 | const std::vector<GLuint64>& aTextures = myRaytraceGeometry.TextureHandles(); |
2264 | |
189f85a3 |
2265 | theProgram->SetUniform (theGlContext, myUniformLocations[theProgramId][OpenGl_RT_uTexSamplersArray], |
47e9c178 |
2266 | static_cast<GLsizei> (aTextures.size()), (OpenGl_Vec2u* )&aTextures.front()); |
25ef750e |
2267 | } |
2268 | |
189f85a3 |
2269 | // Set background colors (only gradient background supported) |
67c12d80 |
2270 | if (myBgGradientArray != NULL |
2271 | && myBgGradientArray->IsDefined()) |
25ef750e |
2272 | { |
189f85a3 |
2273 | theProgram->SetUniform (theGlContext, |
2274 | myUniformLocations[theProgramId][OpenGl_RT_uBackColorTop], myBgGradientArray->GradientColor (0)); |
2275 | theProgram->SetUniform (theGlContext, |
2276 | myUniformLocations[theProgramId][OpenGl_RT_uBackColorBot], myBgGradientArray->GradientColor (1)); |
25ef750e |
2277 | } |
67c12d80 |
2278 | else |
2279 | { |
c357e426 |
2280 | const OpenGl_Vec4 aBackColor (myBgColor.rgb[0], |
2281 | myBgColor.rgb[1], |
2282 | myBgColor.rgb[2], |
67c12d80 |
2283 | 1.0f); |
2284 | theProgram->SetUniform (theGlContext, |
2285 | myUniformLocations[theProgramId][OpenGl_RT_uBackColorTop], aBackColor); |
2286 | theProgram->SetUniform (theGlContext, |
2287 | myUniformLocations[theProgramId][OpenGl_RT_uBackColorBot], aBackColor); |
2288 | } |
25ef750e |
2289 | |
189f85a3 |
2290 | theProgram->SetUniform (theGlContext, |
c357e426 |
2291 | myUniformLocations[theProgramId][OpenGl_RT_uSphereMapForBack], myRenderParams.UseEnvironmentMapBackground ? 1 : 0); |
189f85a3 |
2292 | |
2293 | return Standard_True; |
25ef750e |
2294 | } |
2295 | |
91c60b57 |
2296 | // ======================================================================= |
189f85a3 |
2297 | // function : bindRaytraceTextures |
91c60b57 |
2298 | // purpose : Binds ray-trace textures to corresponding texture units |
2299 | // ======================================================================= |
2300 | void OpenGl_View::bindRaytraceTextures (const Handle(OpenGl_Context)& theGlContext) |
2301 | { |
2302 | mySceneMinPointTexture->BindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_SceneMinPointTexture); |
2303 | mySceneMaxPointTexture->BindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_SceneMaxPointTexture); |
2304 | mySceneNodeInfoTexture->BindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_SceneNodeInfoTexture); |
2305 | myGeometryVertexTexture->BindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_GeometryVertexTexture); |
2306 | myGeometryNormalTexture->BindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_GeometryNormalTexture); |
2307 | myGeometryTexCrdTexture->BindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_GeometryTexCrdTexture); |
2308 | myGeometryTriangTexture->BindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_GeometryTriangTexture); |
2309 | mySceneTransformTexture->BindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_SceneTransformTexture); |
2310 | myRaytraceMaterialTexture->BindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_RaytraceMaterialTexture); |
2311 | myRaytraceLightSrcTexture->BindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_RaytraceLightSrcTexture); |
2312 | |
2313 | if (!myOpenGlFBO.IsNull()) |
2314 | { |
2315 | myOpenGlFBO->ColorTexture()->Bind (theGlContext, GL_TEXTURE0 + OpenGl_RT_OpenGlColorTexture); |
2316 | myOpenGlFBO->DepthStencilTexture()->Bind (theGlContext, GL_TEXTURE0 + OpenGl_RT_OpenGlDepthTexture); |
2317 | } |
2318 | } |
2319 | |
2320 | // ======================================================================= |
189f85a3 |
2321 | // function : unbindRaytraceTextures |
91c60b57 |
2322 | // purpose : Unbinds ray-trace textures from corresponding texture units |
2323 | // ======================================================================= |
2324 | void OpenGl_View::unbindRaytraceTextures (const Handle(OpenGl_Context)& theGlContext) |
2325 | { |
2326 | mySceneMinPointTexture->UnbindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_SceneMinPointTexture); |
2327 | mySceneMaxPointTexture->UnbindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_SceneMaxPointTexture); |
2328 | mySceneNodeInfoTexture->UnbindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_SceneNodeInfoTexture); |
2329 | myGeometryVertexTexture->UnbindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_GeometryVertexTexture); |
2330 | myGeometryNormalTexture->UnbindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_GeometryNormalTexture); |
2331 | myGeometryTexCrdTexture->UnbindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_GeometryTexCrdTexture); |
2332 | myGeometryTriangTexture->UnbindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_GeometryTriangTexture); |
2333 | mySceneTransformTexture->UnbindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_SceneTransformTexture); |
2334 | myRaytraceMaterialTexture->UnbindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_RaytraceMaterialTexture); |
2335 | myRaytraceLightSrcTexture->UnbindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_RaytraceLightSrcTexture); |
2336 | |
2337 | if (!myOpenGlFBO.IsNull()) |
2338 | { |
2339 | myOpenGlFBO->ColorTexture()->Unbind (theGlContext, GL_TEXTURE0 + OpenGl_RT_OpenGlColorTexture); |
2340 | myOpenGlFBO->DepthStencilTexture()->Unbind (theGlContext, GL_TEXTURE0 + OpenGl_RT_OpenGlDepthTexture); |
2341 | } |
2342 | |
2343 | theGlContext->core15fwd->glActiveTexture (GL_TEXTURE0); |
2344 | } |
2345 | |
fc73a202 |
2346 | // ======================================================================= |
189f85a3 |
2347 | // function : runRaytraceShaders |
fc73a202 |
2348 | // purpose : Runs ray-tracing shader programs |
2349 | // ======================================================================= |
c357e426 |
2350 | Standard_Boolean OpenGl_View::runRaytraceShaders (const Standard_Integer theSizeX, |
91c60b57 |
2351 | const Standard_Integer theSizeY, |
2352 | const OpenGl_Vec3* theOrigins, |
2353 | const OpenGl_Vec3* theDirects, |
2354 | const OpenGl_Mat4& theUnviewMat, |
bf02aa7d |
2355 | Graphic3d_Camera::Projection theProjection, |
38a0206f |
2356 | OpenGl_FrameBuffer* theReadDrawFbo, |
91c60b57 |
2357 | const Handle(OpenGl_Context)& theGlContext) |
fc73a202 |
2358 | { |
91c60b57 |
2359 | bindRaytraceTextures (theGlContext); |
fc73a202 |
2360 | |
189f85a3 |
2361 | Handle(OpenGl_FrameBuffer) aRenderFramebuffer; |
2362 | Handle(OpenGl_FrameBuffer) anAccumFramebuffer; |
2363 | |
bf02aa7d |
2364 | // Choose proper set of framebuffers for stereo rendering |
2365 | Standard_Boolean isStereo = myCamera->ProjectionType() == Graphic3d_Camera::Projection_Stereo; |
2366 | Standard_Boolean isRightEye = theProjection == Graphic3d_Camera::Projection_MonoRightEye; |
2367 | Standard_Integer aFBOIdx = (isStereo && isRightEye) ? 1 : 0; |
2368 | |
189f85a3 |
2369 | if (myRaytraceParameters.GlobalIllumination) // if path-tracing is used |
2370 | { |
bf02aa7d |
2371 | aRenderFramebuffer = myAccumFrames % 2 ? myRaytraceFBO1[aFBOIdx] : myRaytraceFBO2[aFBOIdx]; |
2372 | anAccumFramebuffer = myAccumFrames % 2 ? myRaytraceFBO2[aFBOIdx] : myRaytraceFBO1[aFBOIdx]; |
189f85a3 |
2373 | |
2374 | anAccumFramebuffer->ColorTexture()->Bind ( |
2375 | theGlContext, GL_TEXTURE0 + OpenGl_RT_PrevAccumTexture); |
2376 | |
2377 | aRenderFramebuffer->BindBuffer (theGlContext); |
2378 | } |
c357e426 |
2379 | else if (myRenderParams.IsAntialiasingEnabled) // if 2-pass ray-tracing is used |
fc73a202 |
2380 | { |
bf02aa7d |
2381 | myRaytraceFBO1[aFBOIdx]->BindBuffer (theGlContext); |
91c60b57 |
2382 | |
fc73a202 |
2383 | glDisable (GL_BLEND); |
2384 | } |
2385 | |
91c60b57 |
2386 | Standard_Boolean aResult = theGlContext->BindProgram (myRaytraceProgram); |
fc73a202 |
2387 | |
c357e426 |
2388 | aResult &= setUniformState (theOrigins, |
91c60b57 |
2389 | theDirects, |
2390 | theUnviewMat, |
2391 | 0, // ID of RT program |
2392 | theGlContext); |
fc73a202 |
2393 | |
189f85a3 |
2394 | if (myRaytraceParameters.GlobalIllumination) |
fc73a202 |
2395 | { |
1bd2fee4 |
2396 | if (myAccumFrames == 0) |
2397 | { |
2398 | myRNG.SetSeed(); |
2399 | } |
2400 | |
189f85a3 |
2401 | // Set frame accumulation weight |
2402 | myRaytraceProgram->SetUniform (theGlContext, |
2403 | myUniformLocations[0][OpenGl_RT_uSampleWeight], 1.f / (myAccumFrames + 1)); |
2404 | |
2405 | // Set random number generator seed |
2406 | myRaytraceProgram->SetUniform (theGlContext, |
2407 | myUniformLocations[0][OpenGl_RT_uFrameRndSeed], static_cast<Standard_Integer> (myRNG.NextInt() >> 2)); |
fc73a202 |
2408 | } |
25ef750e |
2409 | |
189f85a3 |
2410 | theGlContext->core20fwd->glDrawArrays (GL_TRIANGLES, 0, 6); |
fc73a202 |
2411 | |
189f85a3 |
2412 | if (myRaytraceParameters.GlobalIllumination) |
2413 | { |
2414 | // Output accumulated image |
2415 | glDisable (GL_BLEND); |
a89742cf |
2416 | |
189f85a3 |
2417 | theGlContext->BindProgram (myOutImageProgram); |
fc73a202 |
2418 | |
189f85a3 |
2419 | if (theReadDrawFbo != NULL) |
2420 | { |
2421 | theReadDrawFbo->BindBuffer (theGlContext); |
2422 | } |
2423 | else |
2424 | { |
2425 | aRenderFramebuffer->UnbindBuffer (theGlContext); |
2426 | } |
fc73a202 |
2427 | |
189f85a3 |
2428 | aRenderFramebuffer->ColorTexture()->Bind ( |
2429 | theGlContext, GL_TEXTURE0 + OpenGl_RT_PrevAccumTexture); |
fc73a202 |
2430 | |
189f85a3 |
2431 | theGlContext->core20fwd->glDrawArrays (GL_TRIANGLES, 0, 6); |
189f85a3 |
2432 | } |
c357e426 |
2433 | else if (myRenderParams.IsAntialiasingEnabled) |
fc73a202 |
2434 | { |
bf02aa7d |
2435 | myRaytraceFBO1[aFBOIdx]->ColorTexture()->Bind (theGlContext, GL_TEXTURE0 + OpenGl_RT_FsaaInputTexture); |
189f85a3 |
2436 | |
2437 | aResult &= theGlContext->BindProgram (myPostFSAAProgram); |
2438 | |
c357e426 |
2439 | aResult &= setUniformState (theOrigins, |
189f85a3 |
2440 | theDirects, |
2441 | theUnviewMat, |
2442 | 1, // ID of FSAA program |
2443 | theGlContext); |
2444 | |
91c60b57 |
2445 | // Perform multi-pass adaptive FSAA using ping-pong technique. |
2446 | // We use 'FLIPTRI' sampling pattern changing for every pixel |
2447 | // (3 additional samples per pixel, the 1st sample is already |
2448 | // available from initial ray-traced image). |
2449 | for (Standard_Integer anIt = 1; anIt < 4; ++anIt) |
50d0e1ce |
2450 | { |
91c60b57 |
2451 | GLfloat aOffsetX = 1.f / theSizeX; |
2452 | GLfloat aOffsetY = 1.f / theSizeY; |
50d0e1ce |
2453 | |
91c60b57 |
2454 | if (anIt == 1) |
2455 | { |
2456 | aOffsetX *= -0.55f; |
2457 | aOffsetY *= 0.55f; |
2458 | } |
2459 | else if (anIt == 2) |
2460 | { |
2461 | aOffsetX *= 0.00f; |
2462 | aOffsetY *= -0.55f; |
2463 | } |
2464 | else if (anIt == 3) |
2465 | { |
2466 | aOffsetX *= 0.55f; |
2467 | aOffsetY *= 0.00f; |
2468 | } |
fc73a202 |
2469 | |
91c60b57 |
2470 | aResult &= myPostFSAAProgram->SetUniform (theGlContext, |
2471 | myUniformLocations[1][OpenGl_RT_uSamples], anIt + 1); |
2472 | aResult &= myPostFSAAProgram->SetUniform (theGlContext, |
2473 | myUniformLocations[1][OpenGl_RT_uOffsetX], aOffsetX); |
2474 | aResult &= myPostFSAAProgram->SetUniform (theGlContext, |
2475 | myUniformLocations[1][OpenGl_RT_uOffsetY], aOffsetY); |
fc73a202 |
2476 | |
bf02aa7d |
2477 | Handle(OpenGl_FrameBuffer)& aFramebuffer = anIt % 2 ? myRaytraceFBO2[aFBOIdx] : myRaytraceFBO1[aFBOIdx]; |
fc73a202 |
2478 | |
91c60b57 |
2479 | if (anIt == 3) // disable FBO on last iteration |
2480 | { |
38a0206f |
2481 | if (theReadDrawFbo != NULL) |
189f85a3 |
2482 | { |
38a0206f |
2483 | theReadDrawFbo->BindBuffer (theGlContext); |
189f85a3 |
2484 | } |
2485 | else |
2486 | { |
2487 | aFramebuffer->UnbindBuffer (theGlContext); |
2488 | } |
91c60b57 |
2489 | } |
2490 | else |
2491 | { |
2492 | aFramebuffer->BindBuffer (theGlContext); |
2493 | } |
50d0e1ce |
2494 | |
91c60b57 |
2495 | theGlContext->core20fwd->glDrawArrays (GL_TRIANGLES, 0, 6); |
e276548b |
2496 | |
91c60b57 |
2497 | if (anIt != 3) // set input for the next pass |
2498 | { |
189f85a3 |
2499 | aFramebuffer->ColorTexture()->Bind (theGlContext, GL_TEXTURE0 + OpenGl_RT_FsaaInputTexture); |
91c60b57 |
2500 | } |
e276548b |
2501 | } |
2502 | } |
fc73a202 |
2503 | |
91c60b57 |
2504 | unbindRaytraceTextures (theGlContext); |
a89742cf |
2505 | |
91c60b57 |
2506 | theGlContext->BindProgram (NULL); |
fc73a202 |
2507 | |
91c60b57 |
2508 | return aResult; |
e276548b |
2509 | } |
2510 | |
2511 | // ======================================================================= |
189f85a3 |
2512 | // function : raytrace |
fc73a202 |
2513 | // purpose : Redraws the window using OpenGL/GLSL ray-tracing |
e276548b |
2514 | // ======================================================================= |
c357e426 |
2515 | Standard_Boolean OpenGl_View::raytrace (const Standard_Integer theSizeX, |
91c60b57 |
2516 | const Standard_Integer theSizeY, |
bf02aa7d |
2517 | Graphic3d_Camera::Projection theProjection, |
38a0206f |
2518 | OpenGl_FrameBuffer* theReadDrawFbo, |
91c60b57 |
2519 | const Handle(OpenGl_Context)& theGlContext) |
e276548b |
2520 | { |
c357e426 |
2521 | if (!initRaytraceResources (theGlContext)) |
91c60b57 |
2522 | { |
e276548b |
2523 | return Standard_False; |
91c60b57 |
2524 | } |
2525 | |
bf02aa7d |
2526 | if (!updateRaytraceBuffers (theSizeX, theSizeY, theGlContext)) |
91c60b57 |
2527 | { |
2528 | return Standard_False; |
2529 | } |
e276548b |
2530 | |
91c60b57 |
2531 | if (!updateRaytraceEnvironmentMap (theGlContext)) |
2532 | { |
e276548b |
2533 | return Standard_False; |
91c60b57 |
2534 | } |
e276548b |
2535 | |
2536 | // Get model-view and projection matrices |
38a0206f |
2537 | OpenGl_Mat4 aOrientationMatrix = myCamera->OrientationMatrixF(); |
2538 | OpenGl_Mat4 aViewMappingMatrix = theGlContext->ProjectionState.Current(); |
e276548b |
2539 | |
38a0206f |
2540 | OpenGl_Mat4 aInverOrientMatrix; |
91c60b57 |
2541 | aOrientationMatrix.Inverted (aInverOrientMatrix); |
91c60b57 |
2542 | if (!updateRaytraceLightSources (aInverOrientMatrix, theGlContext)) |
2543 | { |
e276548b |
2544 | return Standard_False; |
91c60b57 |
2545 | } |
e276548b |
2546 | |
fc73a202 |
2547 | OpenGl_Vec3 aOrigins[4]; |
2548 | OpenGl_Vec3 aDirects[4]; |
25ef750e |
2549 | OpenGl_Mat4 anUnviewMat; |
e276548b |
2550 | |
91c60b57 |
2551 | updateCamera (aOrientationMatrix, |
fc73a202 |
2552 | aViewMappingMatrix, |
2553 | aOrigins, |
a89742cf |
2554 | aDirects, |
25ef750e |
2555 | anUnviewMat); |
e276548b |
2556 | |
189f85a3 |
2557 | glDisable (GL_BLEND); |
e276548b |
2558 | glDisable (GL_DEPTH_TEST); |
2559 | |
38a0206f |
2560 | if (theReadDrawFbo != NULL) |
a89742cf |
2561 | { |
38a0206f |
2562 | theReadDrawFbo->BindBuffer (theGlContext); |
a89742cf |
2563 | } |
2564 | |
c827ea3a |
2565 | // Generate ray-traced image |
e276548b |
2566 | if (myIsRaytraceDataValid) |
2567 | { |
189f85a3 |
2568 | myRaytraceScreenQuad.BindVertexAttrib (theGlContext, Graphic3d_TOA_POS); |
fc73a202 |
2569 | |
91c60b57 |
2570 | if (!myRaytraceGeometry.AcquireTextures (theGlContext)) |
25ef750e |
2571 | { |
91c60b57 |
2572 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION_ARB, GL_DEBUG_TYPE_ERROR_ARB, |
2573 | 0, GL_DEBUG_SEVERITY_MEDIUM_ARB, "Error: Failed to acquire OpenGL image textures"); |
25ef750e |
2574 | } |
2575 | |
c357e426 |
2576 | Standard_Boolean aResult = runRaytraceShaders (theSizeX, |
91c60b57 |
2577 | theSizeY, |
2578 | aOrigins, |
2579 | aDirects, |
2580 | anUnviewMat, |
bf02aa7d |
2581 | theProjection, |
38a0206f |
2582 | theReadDrawFbo, |
91c60b57 |
2583 | theGlContext); |
fc73a202 |
2584 | |
91c60b57 |
2585 | if (!aResult) |
25ef750e |
2586 | { |
91c60b57 |
2587 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION_ARB, GL_DEBUG_TYPE_ERROR_ARB, |
2588 | 0, GL_DEBUG_SEVERITY_MEDIUM_ARB, "Error: Failed to execute ray-tracing shaders"); |
2589 | } |
25ef750e |
2590 | |
91c60b57 |
2591 | if (!myRaytraceGeometry.ReleaseTextures (theGlContext)) |
2592 | { |
2593 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION_ARB, GL_DEBUG_TYPE_ERROR_ARB, |
2594 | 0, GL_DEBUG_SEVERITY_MEDIUM_ARB, "Error: Failed to release OpenGL image textures"); |
25ef750e |
2595 | } |
2596 | |
189f85a3 |
2597 | myRaytraceScreenQuad.UnbindVertexAttrib (theGlContext, Graphic3d_TOA_POS); |
e276548b |
2598 | } |
2599 | |
91c60b57 |
2600 | glDisable (GL_BLEND); |
2601 | glEnable (GL_DEPTH_TEST); |
a89742cf |
2602 | |
e276548b |
2603 | return Standard_True; |
f8ae3605 |
2604 | } |