91c60b57 |
1 | // Created on: 2015-02-20 |
e276548b |
2 | // Created by: Denis BOGOLEPOV |
91c60b57 |
3 | // Copyright (c) 2015 OPEN CASCADE SAS |
e276548b |
4 | // |
973c2be1 |
5 | // This file is part of Open CASCADE Technology software library. |
e276548b |
6 | // |
d5f74e42 |
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 |
973c2be1 |
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. |
e276548b |
12 | // |
973c2be1 |
13 | // Alternatively, this file may be used under the terms of Open CASCADE |
14 | // commercial license or contractual agreement. |
e276548b |
15 | |
c357e426 |
16 | #include <OpenGl_View.hxx> |
91c60b57 |
17 | |
c357e426 |
18 | #include <Graphic3d_TextureParams.hxx> |
b7cd4ba7 |
19 | #include <OpenGl_PrimitiveArray.hxx> |
fc73a202 |
20 | #include <OpenGl_VertexBuffer.hxx> |
3a9b5dc8 |
21 | #include <OpenGl_GlCore44.hxx> |
fc73a202 |
22 | #include <OSD_Protection.hxx> |
91c60b57 |
23 | #include <OSD_File.hxx> |
e276548b |
24 | |
ee5befae |
25 | #include "../Shaders/Shaders_RaytraceBase_vs.pxx" |
26 | #include "../Shaders/Shaders_RaytraceBase_fs.pxx" |
27 | #include "../Shaders/Shaders_PathtraceBase_fs.pxx" |
28 | #include "../Shaders/Shaders_RaytraceRender_fs.pxx" |
29 | #include "../Shaders/Shaders_RaytraceSmooth_fs.pxx" |
30 | #include "../Shaders/Shaders_Display_fs.pxx" |
31 | |
e276548b |
32 | using namespace OpenGl_Raytrace; |
33 | |
34 | //! Use this macro to output ray-tracing debug info |
fc73a202 |
35 | // #define RAY_TRACE_PRINT_INFO |
e276548b |
36 | |
37 | #ifdef RAY_TRACE_PRINT_INFO |
38 | #include <OSD_Timer.hxx> |
39 | #endif |
40 | |
b6472664 |
41 | namespace |
42 | { |
43 | static const OpenGl_Vec4 THE_WHITE_COLOR (1.0f, 1.0f, 1.0f, 1.0f); |
44 | static const OpenGl_Vec4 THE_BLACK_COLOR (0.0f, 0.0f, 0.0f, 1.0f); |
45 | } |
46 | |
cc8cbabe |
47 | namespace |
48 | { |
49 | //! Defines OpenGL texture samplers. |
50 | static const Graphic3d_TextureUnit OpenGl_RT_EnvironmentMapTexture = Graphic3d_TextureUnit_0; |
51 | |
52 | static const Graphic3d_TextureUnit OpenGl_RT_SceneNodeInfoTexture = Graphic3d_TextureUnit_1; |
53 | static const Graphic3d_TextureUnit OpenGl_RT_SceneMinPointTexture = Graphic3d_TextureUnit_2; |
54 | static const Graphic3d_TextureUnit OpenGl_RT_SceneMaxPointTexture = Graphic3d_TextureUnit_3; |
55 | static const Graphic3d_TextureUnit OpenGl_RT_SceneTransformTexture = Graphic3d_TextureUnit_4; |
56 | |
57 | static const Graphic3d_TextureUnit OpenGl_RT_GeometryVertexTexture = Graphic3d_TextureUnit_5; |
58 | static const Graphic3d_TextureUnit OpenGl_RT_GeometryNormalTexture = Graphic3d_TextureUnit_6; |
59 | static const Graphic3d_TextureUnit OpenGl_RT_GeometryTexCrdTexture = Graphic3d_TextureUnit_7; |
60 | static const Graphic3d_TextureUnit OpenGl_RT_GeometryTriangTexture = Graphic3d_TextureUnit_8; |
61 | |
62 | static const Graphic3d_TextureUnit OpenGl_RT_RaytraceMaterialTexture = Graphic3d_TextureUnit_9; |
63 | static const Graphic3d_TextureUnit OpenGl_RT_RaytraceLightSrcTexture = Graphic3d_TextureUnit_10; |
64 | |
65 | static const Graphic3d_TextureUnit OpenGl_RT_FsaaInputTexture = Graphic3d_TextureUnit_11; |
66 | static const Graphic3d_TextureUnit OpenGl_RT_PrevAccumTexture = Graphic3d_TextureUnit_12; |
67 | |
68 | static const Graphic3d_TextureUnit OpenGl_RT_RaytraceDepthTexture = Graphic3d_TextureUnit_13; |
69 | } |
70 | |
e276548b |
71 | // ======================================================================= |
189f85a3 |
72 | // function : updateRaytraceGeometry |
91c60b57 |
73 | // purpose : Updates 3D scene geometry for ray-tracing |
e276548b |
74 | // ======================================================================= |
91c60b57 |
75 | Standard_Boolean OpenGl_View::updateRaytraceGeometry (const RaytraceUpdateMode theMode, |
76 | const Standard_Integer theViewId, |
77 | const Handle(OpenGl_Context)& theGlContext) |
e276548b |
78 | { |
91c60b57 |
79 | // In 'check' mode (OpenGl_GUM_CHECK) the scene geometry is analyzed for |
80 | // modifications. This is light-weight procedure performed on each frame |
84c71f29 |
81 | if (theMode == OpenGl_GUM_CHECK) |
e276548b |
82 | { |
bd6a8454 |
83 | if (myRaytraceLayerListState != myZLayers.ModificationStateOfRaytracable()) |
91c60b57 |
84 | { |
85 | return updateRaytraceGeometry (OpenGl_GUM_PREPARE, theViewId, theGlContext); |
86 | } |
87 | } |
84c71f29 |
88 | else if (theMode == OpenGl_GUM_PREPARE) |
89 | { |
90 | myRaytraceGeometry.ClearMaterials(); |
91c60b57 |
91 | |
84c71f29 |
92 | myArrayToTrianglesMap.clear(); |
e276548b |
93 | |
94 | myIsRaytraceDataValid = Standard_False; |
95 | } |
e276548b |
96 | |
97 | // The set of processed structures (reflected to ray-tracing) |
98 | // This set is used to remove out-of-date records from the |
99 | // hash map of structures |
100 | std::set<const OpenGl_Structure*> anElements; |
101 | |
91c60b57 |
102 | // Set to store all currently visible OpenGL primitive arrays |
103 | // applicable for ray-tracing |
8d3f219f |
104 | std::set<Standard_Size> anArrayIDs; |
84c71f29 |
105 | |
189f85a3 |
106 | // Set to store all non-raytracable elements allowing tracking |
107 | // of changes in OpenGL scene (only for path tracing) |
108 | std::set<Standard_Integer> aNonRaytraceIDs; |
109 | |
91c60b57 |
110 | const OpenGl_Layer& aLayer = myZLayers.Layer (Graphic3d_ZLayerId_Default); |
e276548b |
111 | |
91c60b57 |
112 | if (aLayer.NbStructures() != 0) |
e276548b |
113 | { |
9f112210 |
114 | const OpenGl_ArrayOfIndexedMapOfStructure& aStructArray = aLayer.ArrayOfStructures(); |
91c60b57 |
115 | |
68333c8f |
116 | for (Standard_Integer anIndex = 0; anIndex < aStructArray.Length(); ++anIndex) |
e276548b |
117 | { |
9f112210 |
118 | for (OpenGl_IndexedMapOfStructure::Iterator aStructIt (aStructArray (anIndex)); aStructIt.More(); aStructIt.Next()) |
e276548b |
119 | { |
120 | const OpenGl_Structure* aStructure = aStructIt.Value(); |
121 | |
84c71f29 |
122 | if (theMode == OpenGl_GUM_CHECK) |
e276548b |
123 | { |
91c60b57 |
124 | if (toUpdateStructure (aStructure)) |
e276548b |
125 | { |
91c60b57 |
126 | return updateRaytraceGeometry (OpenGl_GUM_PREPARE, theViewId, theGlContext); |
e276548b |
127 | } |
189f85a3 |
128 | else if (aStructure->IsVisible() && myRaytraceParameters.GlobalIllumination) |
129 | { |
130 | aNonRaytraceIDs.insert (aStructure->highlight ? aStructure->Id : -aStructure->Id); |
131 | } |
e2da917a |
132 | } |
84c71f29 |
133 | else if (theMode == OpenGl_GUM_PREPARE) |
134 | { |
91c60b57 |
135 | if (!aStructure->IsRaytracable() || !aStructure->IsVisible()) |
a1954302 |
136 | { |
a272ed94 |
137 | continue; |
138 | } |
91c60b57 |
139 | else if (!aStructure->ViewAffinity.IsNull() && !aStructure->ViewAffinity->IsVisible (theViewId)) |
a272ed94 |
140 | { |
84c71f29 |
141 | continue; |
a1954302 |
142 | } |
84c71f29 |
143 | |
3e05329c |
144 | for (OpenGl_Structure::GroupIterator aGroupIter (aStructure->Groups()); aGroupIter.More(); aGroupIter.Next()) |
84c71f29 |
145 | { |
91c60b57 |
146 | // Extract OpenGL elements from the group (primitives arrays) |
84c71f29 |
147 | for (const OpenGl_ElementNode* aNode = aGroupIter.Value()->FirstNode(); aNode != NULL; aNode = aNode->next) |
148 | { |
149 | OpenGl_PrimitiveArray* aPrimArray = dynamic_cast<OpenGl_PrimitiveArray*> (aNode->elem); |
150 | |
151 | if (aPrimArray != NULL) |
152 | { |
8d3f219f |
153 | anArrayIDs.insert (aPrimArray->GetUID()); |
84c71f29 |
154 | } |
155 | } |
156 | } |
e2da917a |
157 | } |
91c60b57 |
158 | else if (theMode == OpenGl_GUM_REBUILD) |
e276548b |
159 | { |
160 | if (!aStructure->IsRaytracable()) |
91c60b57 |
161 | { |
e276548b |
162 | continue; |
91c60b57 |
163 | } |
164 | else if (addRaytraceStructure (aStructure, theGlContext)) |
165 | { |
166 | anElements.insert (aStructure); // structure was processed |
167 | } |
e276548b |
168 | } |
169 | } |
170 | } |
171 | } |
172 | |
84c71f29 |
173 | if (theMode == OpenGl_GUM_PREPARE) |
174 | { |
25ef750e |
175 | BVH_ObjectSet<Standard_ShortReal, 3>::BVH_ObjectList anUnchangedObjects; |
84c71f29 |
176 | |
91c60b57 |
177 | // Filter out unchanged objects so only their transformations and materials |
178 | // will be updated (and newly added objects will be processed from scratch) |
179 | for (Standard_Integer anObjIdx = 0; anObjIdx < myRaytraceGeometry.Size(); ++anObjIdx) |
84c71f29 |
180 | { |
181 | OpenGl_TriangleSet* aTriangleSet = dynamic_cast<OpenGl_TriangleSet*> ( |
91c60b57 |
182 | myRaytraceGeometry.Objects().ChangeValue (anObjIdx).operator->()); |
84c71f29 |
183 | |
91c60b57 |
184 | if (aTriangleSet == NULL) |
84c71f29 |
185 | { |
91c60b57 |
186 | continue; |
187 | } |
188 | |
189 | if (anArrayIDs.find (aTriangleSet->AssociatedPArrayID()) != anArrayIDs.end()) |
190 | { |
191 | anUnchangedObjects.Append (myRaytraceGeometry.Objects().Value (anObjIdx)); |
84c71f29 |
192 | |
8d3f219f |
193 | myArrayToTrianglesMap[aTriangleSet->AssociatedPArrayID()] = aTriangleSet; |
84c71f29 |
194 | } |
195 | } |
196 | |
197 | myRaytraceGeometry.Objects() = anUnchangedObjects; |
198 | |
91c60b57 |
199 | return updateRaytraceGeometry (OpenGl_GUM_REBUILD, theViewId, theGlContext); |
84c71f29 |
200 | } |
91c60b57 |
201 | else if (theMode == OpenGl_GUM_REBUILD) |
e276548b |
202 | { |
91c60b57 |
203 | // Actualize the hash map of structures - remove out-of-date records |
d4aaad5b |
204 | std::map<const OpenGl_Structure*, StructState>::iterator anIter = myStructureStates.begin(); |
e276548b |
205 | |
206 | while (anIter != myStructureStates.end()) |
207 | { |
208 | if (anElements.find (anIter->first) == anElements.end()) |
209 | { |
210 | myStructureStates.erase (anIter++); |
211 | } |
212 | else |
213 | { |
214 | ++anIter; |
215 | } |
216 | } |
217 | |
218 | // Actualize OpenGL layer list state |
bd6a8454 |
219 | myRaytraceLayerListState = myZLayers.ModificationStateOfRaytracable(); |
e276548b |
220 | |
91c60b57 |
221 | // Rebuild two-level acceleration structure |
265d4508 |
222 | myRaytraceGeometry.ProcessAcceleration(); |
e276548b |
223 | |
91c60b57 |
224 | myRaytraceSceneRadius = 2.f /* scale factor */ * std::max ( |
225 | myRaytraceGeometry.Box().CornerMin().cwiseAbs().maxComp(), |
226 | myRaytraceGeometry.Box().CornerMax().cwiseAbs().maxComp()); |
e276548b |
227 | |
25ef750e |
228 | const BVH_Vec3f aSize = myRaytraceGeometry.Box().Size(); |
e276548b |
229 | |
91c60b57 |
230 | myRaytraceSceneEpsilon = Max (1.0e-6f, 1.0e-4f * aSize.Modulus()); |
fc73a202 |
231 | |
91c60b57 |
232 | return uploadRaytraceData (theGlContext); |
e276548b |
233 | } |
234 | |
189f85a3 |
235 | if (myRaytraceParameters.GlobalIllumination) |
236 | { |
237 | Standard_Boolean toRestart = |
238 | aNonRaytraceIDs.size() != myNonRaytraceStructureIDs.size(); |
239 | |
240 | for (std::set<Standard_Integer>::iterator anID = aNonRaytraceIDs.begin(); anID != aNonRaytraceIDs.end() && !toRestart; ++anID) |
241 | { |
242 | if (myNonRaytraceStructureIDs.find (*anID) == myNonRaytraceStructureIDs.end()) |
243 | { |
244 | toRestart = Standard_True; |
245 | } |
246 | } |
247 | |
248 | if (toRestart) |
3a9b5dc8 |
249 | { |
189f85a3 |
250 | myAccumFrames = 0; |
3a9b5dc8 |
251 | } |
189f85a3 |
252 | |
253 | myNonRaytraceStructureIDs = aNonRaytraceIDs; |
254 | } |
255 | |
e276548b |
256 | return Standard_True; |
257 | } |
258 | |
259 | // ======================================================================= |
189f85a3 |
260 | // function : toUpdateStructure |
e2da917a |
261 | // purpose : Checks to see if the structure is modified |
e276548b |
262 | // ======================================================================= |
91c60b57 |
263 | Standard_Boolean OpenGl_View::toUpdateStructure (const OpenGl_Structure* theStructure) |
e276548b |
264 | { |
265 | if (!theStructure->IsRaytracable()) |
266 | { |
e276548b |
267 | if (theStructure->ModificationState() > 0) |
268 | { |
269 | theStructure->ResetModificationState(); |
91c60b57 |
270 | |
271 | return Standard_True; // ray-trace element was removed - need to rebuild |
e276548b |
272 | } |
273 | |
91c60b57 |
274 | return Standard_False; // did not contain ray-trace elements |
e276548b |
275 | } |
276 | |
d4aaad5b |
277 | std::map<const OpenGl_Structure*, StructState>::iterator aStructState = myStructureStates.find (theStructure); |
e276548b |
278 | |
d4aaad5b |
279 | if (aStructState == myStructureStates.end() || aStructState->second.StructureState != theStructure->ModificationState()) |
91c60b57 |
280 | { |
d4aaad5b |
281 | return Standard_True; |
282 | } |
283 | else if (theStructure->InstancedStructure() != NULL) |
284 | { |
285 | return aStructState->second.InstancedState != theStructure->InstancedStructure()->ModificationState(); |
91c60b57 |
286 | } |
e276548b |
287 | |
d4aaad5b |
288 | return Standard_False; |
e276548b |
289 | } |
290 | |
25ef750e |
291 | // ======================================================================= |
189f85a3 |
292 | // function : buildTextureTransform |
25ef750e |
293 | // purpose : Constructs texture transformation matrix |
294 | // ======================================================================= |
189f85a3 |
295 | void buildTextureTransform (const Handle(Graphic3d_TextureParams)& theParams, BVH_Mat4f& theMatrix) |
25ef750e |
296 | { |
297 | theMatrix.InitIdentity(); |
cc8cbabe |
298 | if (theParams.IsNull()) |
299 | { |
300 | return; |
301 | } |
25ef750e |
302 | |
303 | // Apply scaling |
304 | const Graphic3d_Vec2& aScale = theParams->Scale(); |
305 | |
306 | theMatrix.ChangeValue (0, 0) *= aScale.x(); |
307 | theMatrix.ChangeValue (1, 0) *= aScale.x(); |
308 | theMatrix.ChangeValue (2, 0) *= aScale.x(); |
309 | theMatrix.ChangeValue (3, 0) *= aScale.x(); |
310 | |
311 | theMatrix.ChangeValue (0, 1) *= aScale.y(); |
312 | theMatrix.ChangeValue (1, 1) *= aScale.y(); |
313 | theMatrix.ChangeValue (2, 1) *= aScale.y(); |
314 | theMatrix.ChangeValue (3, 1) *= aScale.y(); |
315 | |
316 | // Apply translation |
317 | const Graphic3d_Vec2 aTrans = -theParams->Translation(); |
318 | |
319 | theMatrix.ChangeValue (0, 3) = theMatrix.GetValue (0, 0) * aTrans.x() + |
320 | theMatrix.GetValue (0, 1) * aTrans.y(); |
321 | |
322 | theMatrix.ChangeValue (1, 3) = theMatrix.GetValue (1, 0) * aTrans.x() + |
323 | theMatrix.GetValue (1, 1) * aTrans.y(); |
324 | |
325 | theMatrix.ChangeValue (2, 3) = theMatrix.GetValue (2, 0) * aTrans.x() + |
326 | theMatrix.GetValue (2, 1) * aTrans.y(); |
327 | |
328 | // Apply rotation |
329 | const Standard_ShortReal aSin = std::sin ( |
330 | -theParams->Rotation() * static_cast<Standard_ShortReal> (M_PI / 180.0)); |
331 | const Standard_ShortReal aCos = std::cos ( |
332 | -theParams->Rotation() * static_cast<Standard_ShortReal> (M_PI / 180.0)); |
333 | |
334 | BVH_Mat4f aRotationMat; |
335 | aRotationMat.SetValue (0, 0, aCos); |
336 | aRotationMat.SetValue (1, 1, aCos); |
337 | aRotationMat.SetValue (0, 1, -aSin); |
338 | aRotationMat.SetValue (1, 0, aSin); |
339 | |
340 | theMatrix = theMatrix * aRotationMat; |
341 | } |
342 | |
e276548b |
343 | // ======================================================================= |
189f85a3 |
344 | // function : convertMaterial |
e276548b |
345 | // purpose : Creates ray-tracing material properties |
346 | // ======================================================================= |
bf5f0ca2 |
347 | OpenGl_RaytraceMaterial OpenGl_View::convertMaterial (const OpenGl_Aspects* theAspect, |
91c60b57 |
348 | const Handle(OpenGl_Context)& theGlContext) |
e276548b |
349 | { |
91c60b57 |
350 | OpenGl_RaytraceMaterial theMaterial; |
25ef750e |
351 | |
b6472664 |
352 | const Graphic3d_MaterialAspect& aSrcMat = theAspect->Aspect()->FrontMaterial(); |
353 | const OpenGl_Vec3& aMatCol = theAspect->Aspect()->InteriorColor(); |
a71a71de |
354 | const bool isPhysic = aSrcMat.MaterialType (Graphic3d_MATERIAL_PHYSIC); |
b6472664 |
355 | const float aShine = 128.0f * float(aSrcMat.Shininess()); |
b6472664 |
356 | |
357 | // ambient component |
358 | if (aSrcMat.ReflectionMode (Graphic3d_TOR_AMBIENT)) |
359 | { |
360 | const OpenGl_Vec3& aSrcAmb = isPhysic ? aSrcMat.AmbientColor() : aMatCol; |
361 | theMaterial.Ambient = BVH_Vec4f (aSrcAmb * (float )aSrcMat.Ambient(), 1.0f); |
362 | } |
363 | else |
364 | { |
365 | theMaterial.Ambient = THE_BLACK_COLOR; |
366 | } |
367 | |
368 | // diffusion component |
369 | if (aSrcMat.ReflectionMode (Graphic3d_TOR_DIFFUSE)) |
370 | { |
371 | const OpenGl_Vec3& aSrcDif = isPhysic ? aSrcMat.DiffuseColor() : aMatCol; |
372 | theMaterial.Diffuse = BVH_Vec4f (aSrcDif * (float )aSrcMat.Diffuse(), -1.0f); // -1 is no texture |
373 | } |
374 | else |
375 | { |
376 | theMaterial.Diffuse = BVH_Vec4f (THE_BLACK_COLOR.rgb(), -1.0f); |
377 | } |
378 | |
379 | // specular component |
380 | if (aSrcMat.ReflectionMode (Graphic3d_TOR_SPECULAR)) |
381 | { |
382 | const OpenGl_Vec3& aSrcSpe = aSrcMat.SpecularColor(); |
383 | const OpenGl_Vec3& aSrcSpe2 = isPhysic ? aSrcSpe : THE_WHITE_COLOR.rgb(); |
384 | theMaterial.Specular = BVH_Vec4f (aSrcSpe2 * (float )aSrcMat.Specular(), aShine); |
385 | |
386 | const Standard_ShortReal aMaxRefl = Max (theMaterial.Diffuse.x() + theMaterial.Specular.x(), |
387 | Max (theMaterial.Diffuse.y() + theMaterial.Specular.y(), |
388 | theMaterial.Diffuse.z() + theMaterial.Specular.z())); |
389 | |
390 | const Standard_ShortReal aReflectionScale = 0.75f / aMaxRefl; |
391 | |
392 | // ignore isPhysic here |
393 | theMaterial.Reflection = BVH_Vec4f (aSrcSpe * (float )aSrcMat.Specular() * aReflectionScale, 0.0f); |
394 | } |
395 | else |
396 | { |
397 | theMaterial.Specular = BVH_Vec4f (THE_BLACK_COLOR.rgb(), aShine); |
398 | } |
399 | |
400 | // emission component |
401 | if (aSrcMat.ReflectionMode (Graphic3d_TOR_EMISSION)) |
402 | { |
403 | const OpenGl_Vec3& aSrcEms = isPhysic ? aSrcMat.EmissiveColor() : aMatCol; |
404 | theMaterial.Emission = BVH_Vec4f (aSrcEms * (float )aSrcMat.Emissive(), 1.0f); |
405 | } |
406 | else |
407 | { |
408 | theMaterial.Emission = THE_BLACK_COLOR; |
409 | } |
410 | |
411 | const float anIndex = (float )aSrcMat.RefractionIndex(); |
a71a71de |
412 | theMaterial.Transparency = BVH_Vec4f (aSrcMat.Alpha(), aSrcMat.Transparency(), |
b6472664 |
413 | anIndex == 0 ? 1.0f : anIndex, |
414 | anIndex == 0 ? 1.0f : 1.0f / anIndex); |
25ef750e |
415 | |
189f85a3 |
416 | // Serialize physically-based material properties |
b6472664 |
417 | const Graphic3d_BSDF& aBSDF = aSrcMat.BSDF(); |
189f85a3 |
418 | |
05aa616d |
419 | theMaterial.BSDF.Kc = aBSDF.Kc; |
420 | theMaterial.BSDF.Ks = aBSDF.Ks; |
421 | theMaterial.BSDF.Kd = BVH_Vec4f (aBSDF.Kd, -1.f); // no texture |
422 | theMaterial.BSDF.Kt = BVH_Vec4f (aBSDF.Kt, 0.f); |
423 | theMaterial.BSDF.Le = BVH_Vec4f (aBSDF.Le, 0.f); |
189f85a3 |
424 | |
05aa616d |
425 | theMaterial.BSDF.Absorption = aBSDF.Absorption; |
189f85a3 |
426 | |
05aa616d |
427 | theMaterial.BSDF.FresnelCoat = aBSDF.FresnelCoat.Serialize (); |
428 | theMaterial.BSDF.FresnelBase = aBSDF.FresnelBase.Serialize (); |
189f85a3 |
429 | |
430 | // Handle material textures |
cc8cbabe |
431 | if (!theAspect->Aspect()->ToMapTexture()) |
25ef750e |
432 | { |
cc8cbabe |
433 | return theMaterial; |
434 | } |
91c60b57 |
435 | |
cc8cbabe |
436 | const Handle(OpenGl_TextureSet)& aTextureSet = theAspect->TextureSet (theGlContext); |
437 | if (aTextureSet.IsNull() |
438 | || aTextureSet->IsEmpty() |
439 | || aTextureSet->First().IsNull()) |
440 | { |
441 | return theMaterial; |
442 | } |
91c60b57 |
443 | |
cc8cbabe |
444 | if (theGlContext->HasRayTracingTextures()) |
445 | { |
446 | const Handle(OpenGl_Texture)& aTexture = aTextureSet->First(); |
447 | buildTextureTransform (aTexture->Sampler()->Parameters(), theMaterial.TextureTransform); |
91c60b57 |
448 | |
cc8cbabe |
449 | // write texture ID to diffuse w-component |
450 | theMaterial.Diffuse.w() = theMaterial.BSDF.Kd.w() = static_cast<Standard_ShortReal> (myRaytraceGeometry.AddTexture (aTexture)); |
451 | } |
452 | else if (!myIsRaytraceWarnTextures) |
453 | { |
454 | const TCollection_ExtendedString aWarnMessage = |
455 | "Warning: texturing in Ray-Trace requires GL_ARB_bindless_texture extension which is missing. " |
456 | "Please try to update graphics card driver. At the moment textures will be ignored."; |
457 | |
458 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION, |
459 | GL_DEBUG_TYPE_PORTABILITY, 0, GL_DEBUG_SEVERITY_HIGH, aWarnMessage); |
460 | |
461 | myIsRaytraceWarnTextures = Standard_True; |
25ef750e |
462 | } |
e276548b |
463 | |
91c60b57 |
464 | return theMaterial; |
e276548b |
465 | } |
466 | |
467 | // ======================================================================= |
189f85a3 |
468 | // function : addRaytraceStructure |
e276548b |
469 | // purpose : Adds OpenGL structure to ray-traced scene geometry |
470 | // ======================================================================= |
91c60b57 |
471 | Standard_Boolean OpenGl_View::addRaytraceStructure (const OpenGl_Structure* theStructure, |
472 | const Handle(OpenGl_Context)& theGlContext) |
e276548b |
473 | { |
e276548b |
474 | if (!theStructure->IsVisible()) |
475 | { |
d4aaad5b |
476 | myStructureStates[theStructure] = StructState (theStructure); |
91c60b57 |
477 | |
e276548b |
478 | return Standard_True; |
479 | } |
480 | |
481 | // Get structure material |
2831708b |
482 | OpenGl_RaytraceMaterial aDefaultMaterial; |
1f7f5a90 |
483 | Standard_Boolean aResult = addRaytraceGroups (theStructure, aDefaultMaterial, theStructure->Transformation(), theGlContext); |
0717ddc1 |
484 | |
485 | // Process all connected OpenGL structures |
d4aaad5b |
486 | const OpenGl_Structure* anInstanced = theStructure->InstancedStructure(); |
487 | |
488 | if (anInstanced != NULL && anInstanced->IsRaytracable()) |
0717ddc1 |
489 | { |
1f7f5a90 |
490 | aResult &= addRaytraceGroups (anInstanced, aDefaultMaterial, theStructure->Transformation(), theGlContext); |
0717ddc1 |
491 | } |
492 | |
d4aaad5b |
493 | myStructureStates[theStructure] = StructState (theStructure); |
91c60b57 |
494 | |
495 | return aResult; |
0717ddc1 |
496 | } |
497 | |
498 | // ======================================================================= |
189f85a3 |
499 | // function : addRaytraceGroups |
0717ddc1 |
500 | // purpose : Adds OpenGL groups to ray-traced scene geometry |
501 | // ======================================================================= |
8c820969 |
502 | Standard_Boolean OpenGl_View::addRaytraceGroups (const OpenGl_Structure* theStructure, |
503 | const OpenGl_RaytraceMaterial& theStructMat, |
1f7f5a90 |
504 | const Handle(Geom_Transformation)& theTrsf, |
8c820969 |
505 | const Handle(OpenGl_Context)& theGlContext) |
0717ddc1 |
506 | { |
1f7f5a90 |
507 | OpenGl_Mat4 aMat4; |
3e05329c |
508 | for (OpenGl_Structure::GroupIterator aGroupIter (theStructure->Groups()); aGroupIter.More(); aGroupIter.Next()) |
e276548b |
509 | { |
510 | // Get group material |
8c820969 |
511 | OpenGl_RaytraceMaterial aGroupMaterial; |
bf5f0ca2 |
512 | if (aGroupIter.Value()->GlAspects() != NULL) |
e276548b |
513 | { |
bf5f0ca2 |
514 | aGroupMaterial = convertMaterial (aGroupIter.Value()->GlAspects(), theGlContext); |
e276548b |
515 | } |
516 | |
8c820969 |
517 | Standard_Integer aMatID = static_cast<Standard_Integer> (myRaytraceGeometry.Materials.size()); |
e276548b |
518 | |
8c820969 |
519 | // Use group material if available, otherwise use structure material |
bf5f0ca2 |
520 | myRaytraceGeometry.Materials.push_back (aGroupIter.Value()->GlAspects() != NULL ? aGroupMaterial : theStructMat); |
e276548b |
521 | |
265d4508 |
522 | // Add OpenGL elements from group (extract primitives arrays and aspects) |
b64d84be |
523 | for (const OpenGl_ElementNode* aNode = aGroupIter.Value()->FirstNode(); aNode != NULL; aNode = aNode->next) |
e276548b |
524 | { |
bf5f0ca2 |
525 | OpenGl_Aspects* anAspect = dynamic_cast<OpenGl_Aspects*> (aNode->elem); |
91c60b57 |
526 | |
5322131b |
527 | if (anAspect != NULL) |
e276548b |
528 | { |
5322131b |
529 | aMatID = static_cast<Standard_Integer> (myRaytraceGeometry.Materials.size()); |
e276548b |
530 | |
91c60b57 |
531 | OpenGl_RaytraceMaterial aMaterial = convertMaterial (anAspect, theGlContext); |
e276548b |
532 | |
5322131b |
533 | myRaytraceGeometry.Materials.push_back (aMaterial); |
e276548b |
534 | } |
5322131b |
535 | else |
e276548b |
536 | { |
537 | OpenGl_PrimitiveArray* aPrimArray = dynamic_cast<OpenGl_PrimitiveArray*> (aNode->elem); |
84c71f29 |
538 | |
e276548b |
539 | if (aPrimArray != NULL) |
540 | { |
8d3f219f |
541 | std::map<Standard_Size, OpenGl_TriangleSet*>::iterator aSetIter = myArrayToTrianglesMap.find (aPrimArray->GetUID()); |
542 | |
84c71f29 |
543 | if (aSetIter != myArrayToTrianglesMap.end()) |
544 | { |
545 | OpenGl_TriangleSet* aSet = aSetIter->second; |
f5b72419 |
546 | opencascade::handle<BVH_Transform<Standard_ShortReal, 4> > aTransform = new BVH_Transform<Standard_ShortReal, 4>(); |
1f7f5a90 |
547 | if (!theTrsf.IsNull()) |
84c71f29 |
548 | { |
1f7f5a90 |
549 | theTrsf->Trsf().GetMat4 (aMat4); |
550 | aTransform->SetTransform (aMat4); |
84c71f29 |
551 | } |
91c60b57 |
552 | |
84c71f29 |
553 | aSet->SetProperties (aTransform); |
25ef750e |
554 | if (aSet->MaterialIndex() != OpenGl_TriangleSet::INVALID_MATERIAL && aSet->MaterialIndex() != aMatID) |
84c71f29 |
555 | { |
556 | aSet->SetMaterialIndex (aMatID); |
557 | } |
558 | } |
559 | else |
560 | { |
f5b72419 |
561 | if (Handle(OpenGl_TriangleSet) aSet = addRaytracePrimitiveArray (aPrimArray, aMatID, 0)) |
84c71f29 |
562 | { |
f5b72419 |
563 | opencascade::handle<BVH_Transform<Standard_ShortReal, 4> > aTransform = new BVH_Transform<Standard_ShortReal, 4>(); |
1f7f5a90 |
564 | if (!theTrsf.IsNull()) |
84c71f29 |
565 | { |
1f7f5a90 |
566 | theTrsf->Trsf().GetMat4 (aMat4); |
567 | aTransform->SetTransform (aMat4); |
84c71f29 |
568 | } |
569 | |
570 | aSet->SetProperties (aTransform); |
84c71f29 |
571 | myRaytraceGeometry.Objects().Append (aSet); |
572 | } |
573 | } |
e276548b |
574 | } |
575 | } |
576 | } |
e276548b |
577 | } |
578 | |
e276548b |
579 | return Standard_True; |
580 | } |
581 | |
582 | // ======================================================================= |
189f85a3 |
583 | // function : addRaytracePrimitiveArray |
e276548b |
584 | // purpose : Adds OpenGL primitive array to ray-traced scene geometry |
585 | // ======================================================================= |
f5b72419 |
586 | Handle(OpenGl_TriangleSet) OpenGl_View::addRaytracePrimitiveArray (const OpenGl_PrimitiveArray* theArray, |
587 | const Standard_Integer theMaterial, |
588 | const OpenGl_Mat4* theTransform) |
e276548b |
589 | { |
91c60b57 |
590 | const Handle(Graphic3d_BoundBuffer)& aBounds = theArray->Bounds(); |
871fa103 |
591 | const Handle(Graphic3d_IndexBuffer)& anIndices = theArray->Indices(); |
592 | const Handle(Graphic3d_Buffer)& anAttribs = theArray->Attributes(); |
91c60b57 |
593 | |
871fa103 |
594 | if (theArray->DrawMode() < GL_TRIANGLES |
91c60b57 |
595 | #ifndef GL_ES_VERSION_2_0 |
871fa103 |
596 | || theArray->DrawMode() > GL_POLYGON |
ca3c13d1 |
597 | #else |
598 | || theArray->DrawMode() > GL_TRIANGLE_FAN |
599 | #endif |
871fa103 |
600 | || anAttribs.IsNull()) |
e276548b |
601 | { |
f5b72419 |
602 | return Handle(OpenGl_TriangleSet)(); |
e276548b |
603 | } |
604 | |
25ef750e |
605 | OpenGl_Mat4 aNormalMatrix; |
25ef750e |
606 | if (theTransform != NULL) |
607 | { |
608 | Standard_ASSERT_RETURN (theTransform->Inverted (aNormalMatrix), |
609 | "Error: Failed to compute normal transformation matrix", NULL); |
610 | |
611 | aNormalMatrix.Transpose(); |
612 | } |
613 | |
f5b72419 |
614 | Handle(OpenGl_TriangleSet) aSet = new OpenGl_TriangleSet (theArray->GetUID(), myRaytraceBVHBuilder); |
e276548b |
615 | { |
871fa103 |
616 | aSet->Vertices.reserve (anAttribs->NbElements); |
91c60b57 |
617 | aSet->Normals.reserve (anAttribs->NbElements); |
618 | aSet->TexCrds.reserve (anAttribs->NbElements); |
25ef750e |
619 | |
871fa103 |
620 | const size_t aVertFrom = aSet->Vertices.size(); |
da87ddc3 |
621 | |
622 | Standard_Integer anAttribIndex = 0; |
623 | Standard_Size anAttribStride = 0; |
624 | if (const Standard_Byte* aPosData = anAttribs->AttributeData (Graphic3d_TOA_POS, anAttribIndex, anAttribStride)) |
265d4508 |
625 | { |
da87ddc3 |
626 | const Graphic3d_Attribute& anAttrib = anAttribs->Attribute (anAttribIndex); |
627 | if (anAttrib.DataType == Graphic3d_TOD_VEC2 |
628 | || anAttrib.DataType == Graphic3d_TOD_VEC3 |
629 | || anAttrib.DataType == Graphic3d_TOD_VEC4) |
871fa103 |
630 | { |
da87ddc3 |
631 | for (Standard_Integer aVertIter = 0; aVertIter < anAttribs->NbElements; ++aVertIter) |
871fa103 |
632 | { |
da87ddc3 |
633 | const float* aCoords = reinterpret_cast<const float*> (aPosData + anAttribStride * aVertIter); |
634 | aSet->Vertices.push_back (BVH_Vec3f (aCoords[0], aCoords[1], anAttrib.DataType != Graphic3d_TOD_VEC2 ? aCoords[2] : 0.0f)); |
871fa103 |
635 | } |
636 | } |
da87ddc3 |
637 | } |
638 | if (const Standard_Byte* aNormData = anAttribs->AttributeData (Graphic3d_TOA_NORM, anAttribIndex, anAttribStride)) |
639 | { |
640 | const Graphic3d_Attribute& anAttrib = anAttribs->Attribute (anAttribIndex); |
641 | if (anAttrib.DataType == Graphic3d_TOD_VEC3 |
642 | || anAttrib.DataType == Graphic3d_TOD_VEC4) |
871fa103 |
643 | { |
da87ddc3 |
644 | for (Standard_Integer aVertIter = 0; aVertIter < anAttribs->NbElements; ++aVertIter) |
871fa103 |
645 | { |
da87ddc3 |
646 | aSet->Normals.push_back (*reinterpret_cast<const Graphic3d_Vec3*> (aNormData + anAttribStride * aVertIter)); |
25ef750e |
647 | } |
648 | } |
da87ddc3 |
649 | } |
650 | if (const Standard_Byte* aTexData = anAttribs->AttributeData (Graphic3d_TOA_UV, anAttribIndex, anAttribStride)) |
651 | { |
652 | const Graphic3d_Attribute& anAttrib = anAttribs->Attribute (anAttribIndex); |
653 | if (anAttrib.DataType == Graphic3d_TOD_VEC2) |
25ef750e |
654 | { |
da87ddc3 |
655 | for (Standard_Integer aVertIter = 0; aVertIter < anAttribs->NbElements; ++aVertIter) |
25ef750e |
656 | { |
da87ddc3 |
657 | aSet->TexCrds.push_back (*reinterpret_cast<const Graphic3d_Vec2*> (aTexData + anAttribStride * aVertIter)); |
871fa103 |
658 | } |
659 | } |
265d4508 |
660 | } |
e276548b |
661 | |
871fa103 |
662 | if (aSet->Normals.size() != aSet->Vertices.size()) |
265d4508 |
663 | { |
871fa103 |
664 | for (Standard_Integer aVertIter = 0; aVertIter < anAttribs->NbElements; ++aVertIter) |
265d4508 |
665 | { |
25ef750e |
666 | aSet->Normals.push_back (BVH_Vec3f()); |
667 | } |
668 | } |
669 | |
670 | if (aSet->TexCrds.size() != aSet->Vertices.size()) |
671 | { |
672 | for (Standard_Integer aVertIter = 0; aVertIter < anAttribs->NbElements; ++aVertIter) |
673 | { |
674 | aSet->TexCrds.push_back (BVH_Vec2f()); |
265d4508 |
675 | } |
871fa103 |
676 | } |
e276548b |
677 | |
25ef750e |
678 | if (theTransform != NULL) |
871fa103 |
679 | { |
680 | for (size_t aVertIter = aVertFrom; aVertIter < aSet->Vertices.size(); ++aVertIter) |
681 | { |
25ef750e |
682 | BVH_Vec3f& aVertex = aSet->Vertices[aVertIter]; |
683 | |
91c60b57 |
684 | BVH_Vec4f aTransVertex = *theTransform * |
685 | BVH_Vec4f (aVertex.x(), aVertex.y(), aVertex.z(), 1.f); |
25ef750e |
686 | |
687 | aVertex = BVH_Vec3f (aTransVertex.x(), aTransVertex.y(), aTransVertex.z()); |
871fa103 |
688 | } |
689 | for (size_t aVertIter = aVertFrom; aVertIter < aSet->Normals.size(); ++aVertIter) |
690 | { |
25ef750e |
691 | BVH_Vec3f& aNormal = aSet->Normals[aVertIter]; |
692 | |
91c60b57 |
693 | BVH_Vec4f aTransNormal = aNormalMatrix * |
694 | BVH_Vec4f (aNormal.x(), aNormal.y(), aNormal.z(), 0.f); |
25ef750e |
695 | |
696 | aNormal = BVH_Vec3f (aTransNormal.x(), aTransNormal.y(), aTransNormal.z()); |
871fa103 |
697 | } |
e276548b |
698 | } |
699 | |
871fa103 |
700 | if (!aBounds.IsNull()) |
265d4508 |
701 | { |
91c60b57 |
702 | for (Standard_Integer aBound = 0, aBoundStart = 0; aBound < aBounds->NbBounds; ++aBound) |
265d4508 |
703 | { |
871fa103 |
704 | const Standard_Integer aVertNum = aBounds->Bounds[aBound]; |
e276548b |
705 | |
91c60b57 |
706 | if (!addRaytraceVertexIndices (*aSet, theMaterial, aVertNum, aBoundStart, *theArray)) |
265d4508 |
707 | { |
f5b72419 |
708 | aSet.Nullify(); |
709 | return Handle(OpenGl_TriangleSet)(); |
265d4508 |
710 | } |
711 | |
712 | aBoundStart += aVertNum; |
713 | } |
714 | } |
715 | else |
e276548b |
716 | { |
871fa103 |
717 | const Standard_Integer aVertNum = !anIndices.IsNull() ? anIndices->NbElements : anAttribs->NbElements; |
e276548b |
718 | |
91c60b57 |
719 | if (!addRaytraceVertexIndices (*aSet, theMaterial, aVertNum, 0, *theArray)) |
e276548b |
720 | { |
f5b72419 |
721 | aSet.Nullify(); |
722 | return Handle(OpenGl_TriangleSet)(); |
e276548b |
723 | } |
e276548b |
724 | } |
725 | } |
e276548b |
726 | |
265d4508 |
727 | if (aSet->Size() != 0) |
91c60b57 |
728 | { |
265d4508 |
729 | aSet->MarkDirty(); |
91c60b57 |
730 | } |
e276548b |
731 | |
265d4508 |
732 | return aSet; |
e276548b |
733 | } |
734 | |
735 | // ======================================================================= |
189f85a3 |
736 | // function : addRaytraceVertexIndices |
e276548b |
737 | // purpose : Adds vertex indices to ray-traced scene geometry |
738 | // ======================================================================= |
91c60b57 |
739 | Standard_Boolean OpenGl_View::addRaytraceVertexIndices (OpenGl_TriangleSet& theSet, |
740 | const Standard_Integer theMatID, |
741 | const Standard_Integer theCount, |
742 | const Standard_Integer theOffset, |
743 | const OpenGl_PrimitiveArray& theArray) |
e276548b |
744 | { |
871fa103 |
745 | switch (theArray.DrawMode()) |
e276548b |
746 | { |
91c60b57 |
747 | case GL_TRIANGLES: return addRaytraceTriangleArray (theSet, theMatID, theCount, theOffset, theArray.Indices()); |
748 | case GL_TRIANGLE_FAN: return addRaytraceTriangleFanArray (theSet, theMatID, theCount, theOffset, theArray.Indices()); |
749 | case GL_TRIANGLE_STRIP: return addRaytraceTriangleStripArray (theSet, theMatID, theCount, theOffset, theArray.Indices()); |
ca3c13d1 |
750 | #if !defined(GL_ES_VERSION_2_0) |
91c60b57 |
751 | case GL_QUAD_STRIP: return addRaytraceQuadrangleStripArray (theSet, theMatID, theCount, theOffset, theArray.Indices()); |
752 | case GL_QUADS: return addRaytraceQuadrangleArray (theSet, theMatID, theCount, theOffset, theArray.Indices()); |
753 | case GL_POLYGON: return addRaytracePolygonArray (theSet, theMatID, theCount, theOffset, theArray.Indices()); |
ca3c13d1 |
754 | #endif |
e276548b |
755 | } |
91c60b57 |
756 | |
871fa103 |
757 | return Standard_False; |
e276548b |
758 | } |
759 | |
760 | // ======================================================================= |
189f85a3 |
761 | // function : addRaytraceTriangleArray |
e276548b |
762 | // purpose : Adds OpenGL triangle array to ray-traced scene geometry |
763 | // ======================================================================= |
91c60b57 |
764 | Standard_Boolean OpenGl_View::addRaytraceTriangleArray (OpenGl_TriangleSet& theSet, |
765 | const Standard_Integer theMatID, |
766 | const Standard_Integer theCount, |
767 | const Standard_Integer theOffset, |
768 | const Handle(Graphic3d_IndexBuffer)& theIndices) |
e276548b |
769 | { |
265d4508 |
770 | if (theCount < 3) |
91c60b57 |
771 | { |
e276548b |
772 | return Standard_True; |
91c60b57 |
773 | } |
e276548b |
774 | |
871fa103 |
775 | theSet.Elements.reserve (theSet.Elements.size() + theCount / 3); |
265d4508 |
776 | |
871fa103 |
777 | if (!theIndices.IsNull()) |
e276548b |
778 | { |
265d4508 |
779 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 2; aVert += 3) |
e276548b |
780 | { |
871fa103 |
781 | theSet.Elements.push_back (BVH_Vec4i (theIndices->Index (aVert + 0), |
782 | theIndices->Index (aVert + 1), |
783 | theIndices->Index (aVert + 2), |
784 | theMatID)); |
e276548b |
785 | } |
786 | } |
787 | else |
788 | { |
265d4508 |
789 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 2; aVert += 3) |
e276548b |
790 | { |
91c60b57 |
791 | theSet.Elements.push_back (BVH_Vec4i (aVert + 0, aVert + 1, aVert + 2, theMatID)); |
e276548b |
792 | } |
793 | } |
794 | |
795 | return Standard_True; |
796 | } |
797 | |
798 | // ======================================================================= |
189f85a3 |
799 | // function : addRaytraceTriangleFanArray |
e276548b |
800 | // purpose : Adds OpenGL triangle fan array to ray-traced scene geometry |
801 | // ======================================================================= |
91c60b57 |
802 | Standard_Boolean OpenGl_View::addRaytraceTriangleFanArray (OpenGl_TriangleSet& theSet, |
803 | const Standard_Integer theMatID, |
804 | const Standard_Integer theCount, |
805 | const Standard_Integer theOffset, |
806 | const Handle(Graphic3d_IndexBuffer)& theIndices) |
e276548b |
807 | { |
265d4508 |
808 | if (theCount < 3) |
91c60b57 |
809 | { |
e276548b |
810 | return Standard_True; |
91c60b57 |
811 | } |
e276548b |
812 | |
871fa103 |
813 | theSet.Elements.reserve (theSet.Elements.size() + theCount - 2); |
265d4508 |
814 | |
871fa103 |
815 | if (!theIndices.IsNull()) |
e276548b |
816 | { |
265d4508 |
817 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 2; ++aVert) |
e276548b |
818 | { |
871fa103 |
819 | theSet.Elements.push_back (BVH_Vec4i (theIndices->Index (theOffset), |
820 | theIndices->Index (aVert + 1), |
821 | theIndices->Index (aVert + 2), |
822 | theMatID)); |
e276548b |
823 | } |
824 | } |
825 | else |
826 | { |
265d4508 |
827 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 2; ++aVert) |
e276548b |
828 | { |
871fa103 |
829 | theSet.Elements.push_back (BVH_Vec4i (theOffset, |
830 | aVert + 1, |
831 | aVert + 2, |
832 | theMatID)); |
e276548b |
833 | } |
834 | } |
835 | |
836 | return Standard_True; |
837 | } |
838 | |
839 | // ======================================================================= |
189f85a3 |
840 | // function : addRaytraceTriangleStripArray |
e276548b |
841 | // purpose : Adds OpenGL triangle strip array to ray-traced scene geometry |
842 | // ======================================================================= |
91c60b57 |
843 | Standard_Boolean OpenGl_View::addRaytraceTriangleStripArray (OpenGl_TriangleSet& theSet, |
844 | const Standard_Integer theMatID, |
845 | const Standard_Integer theCount, |
846 | const Standard_Integer theOffset, |
847 | const Handle(Graphic3d_IndexBuffer)& theIndices) |
e276548b |
848 | { |
265d4508 |
849 | if (theCount < 3) |
91c60b57 |
850 | { |
e276548b |
851 | return Standard_True; |
91c60b57 |
852 | } |
e276548b |
853 | |
871fa103 |
854 | theSet.Elements.reserve (theSet.Elements.size() + theCount - 2); |
265d4508 |
855 | |
871fa103 |
856 | if (!theIndices.IsNull()) |
e276548b |
857 | { |
265d4508 |
858 | for (Standard_Integer aVert = theOffset, aCW = 0; aVert < theOffset + theCount - 2; ++aVert, aCW = (aCW + 1) % 2) |
e276548b |
859 | { |
ad2a55b2 |
860 | theSet.Elements.push_back (BVH_Vec4i (theIndices->Index (aVert + (aCW ? 1 : 0)), |
861 | theIndices->Index (aVert + (aCW ? 0 : 1)), |
871fa103 |
862 | theIndices->Index (aVert + 2), |
863 | theMatID)); |
e276548b |
864 | } |
865 | } |
866 | else |
867 | { |
265d4508 |
868 | for (Standard_Integer aVert = theOffset, aCW = 0; aVert < theOffset + theCount - 2; ++aVert, aCW = (aCW + 1) % 2) |
e276548b |
869 | { |
ad2a55b2 |
870 | theSet.Elements.push_back (BVH_Vec4i (aVert + (aCW ? 1 : 0), |
871 | aVert + (aCW ? 0 : 1), |
871fa103 |
872 | aVert + 2, |
873 | theMatID)); |
e276548b |
874 | } |
875 | } |
876 | |
877 | return Standard_True; |
878 | } |
879 | |
880 | // ======================================================================= |
189f85a3 |
881 | // function : addRaytraceQuadrangleArray |
e276548b |
882 | // purpose : Adds OpenGL quad array to ray-traced scene geometry |
883 | // ======================================================================= |
91c60b57 |
884 | Standard_Boolean OpenGl_View::addRaytraceQuadrangleArray (OpenGl_TriangleSet& theSet, |
885 | const Standard_Integer theMatID, |
886 | const Standard_Integer theCount, |
887 | const Standard_Integer theOffset, |
888 | const Handle(Graphic3d_IndexBuffer)& theIndices) |
e276548b |
889 | { |
265d4508 |
890 | if (theCount < 4) |
91c60b57 |
891 | { |
e276548b |
892 | return Standard_True; |
91c60b57 |
893 | } |
e276548b |
894 | |
871fa103 |
895 | theSet.Elements.reserve (theSet.Elements.size() + theCount / 2); |
265d4508 |
896 | |
871fa103 |
897 | if (!theIndices.IsNull()) |
e276548b |
898 | { |
265d4508 |
899 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 3; aVert += 4) |
e276548b |
900 | { |
871fa103 |
901 | theSet.Elements.push_back (BVH_Vec4i (theIndices->Index (aVert + 0), |
902 | theIndices->Index (aVert + 1), |
903 | theIndices->Index (aVert + 2), |
904 | theMatID)); |
905 | theSet.Elements.push_back (BVH_Vec4i (theIndices->Index (aVert + 0), |
906 | theIndices->Index (aVert + 2), |
907 | theIndices->Index (aVert + 3), |
908 | theMatID)); |
e276548b |
909 | } |
910 | } |
911 | else |
912 | { |
265d4508 |
913 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 3; aVert += 4) |
e276548b |
914 | { |
871fa103 |
915 | theSet.Elements.push_back (BVH_Vec4i (aVert + 0, aVert + 1, aVert + 2, |
916 | theMatID)); |
917 | theSet.Elements.push_back (BVH_Vec4i (aVert + 0, aVert + 2, aVert + 3, |
918 | theMatID)); |
e276548b |
919 | } |
920 | } |
921 | |
922 | return Standard_True; |
923 | } |
924 | |
925 | // ======================================================================= |
189f85a3 |
926 | // function : addRaytraceQuadrangleStripArray |
e276548b |
927 | // purpose : Adds OpenGL quad strip array to ray-traced scene geometry |
928 | // ======================================================================= |
91c60b57 |
929 | Standard_Boolean OpenGl_View::addRaytraceQuadrangleStripArray (OpenGl_TriangleSet& theSet, |
930 | const Standard_Integer theMatID, |
931 | const Standard_Integer theCount, |
932 | const Standard_Integer theOffset, |
933 | const Handle(Graphic3d_IndexBuffer)& theIndices) |
e276548b |
934 | { |
265d4508 |
935 | if (theCount < 4) |
91c60b57 |
936 | { |
e276548b |
937 | return Standard_True; |
91c60b57 |
938 | } |
e276548b |
939 | |
871fa103 |
940 | theSet.Elements.reserve (theSet.Elements.size() + 2 * theCount - 6); |
265d4508 |
941 | |
871fa103 |
942 | if (!theIndices.IsNull()) |
e276548b |
943 | { |
265d4508 |
944 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 3; aVert += 2) |
e276548b |
945 | { |
871fa103 |
946 | theSet.Elements.push_back (BVH_Vec4i (theIndices->Index (aVert + 0), |
947 | theIndices->Index (aVert + 1), |
948 | theIndices->Index (aVert + 2), |
949 | theMatID)); |
950 | |
951 | theSet.Elements.push_back (BVH_Vec4i (theIndices->Index (aVert + 1), |
952 | theIndices->Index (aVert + 3), |
953 | theIndices->Index (aVert + 2), |
954 | theMatID)); |
e276548b |
955 | } |
956 | } |
957 | else |
958 | { |
265d4508 |
959 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 3; aVert += 2) |
e276548b |
960 | { |
871fa103 |
961 | theSet.Elements.push_back (BVH_Vec4i (aVert + 0, |
962 | aVert + 1, |
963 | aVert + 2, |
964 | theMatID)); |
965 | |
966 | theSet.Elements.push_back (BVH_Vec4i (aVert + 1, |
967 | aVert + 3, |
968 | aVert + 2, |
969 | theMatID)); |
e276548b |
970 | } |
971 | } |
972 | |
973 | return Standard_True; |
974 | } |
975 | |
976 | // ======================================================================= |
189f85a3 |
977 | // function : addRaytracePolygonArray |
e276548b |
978 | // purpose : Adds OpenGL polygon array to ray-traced scene geometry |
979 | // ======================================================================= |
91c60b57 |
980 | Standard_Boolean OpenGl_View::addRaytracePolygonArray (OpenGl_TriangleSet& theSet, |
981 | const Standard_Integer theMatID, |
982 | const Standard_Integer theCount, |
983 | const Standard_Integer theOffset, |
984 | const Handle(Graphic3d_IndexBuffer)& theIndices) |
e276548b |
985 | { |
265d4508 |
986 | if (theCount < 3) |
91c60b57 |
987 | { |
e276548b |
988 | return Standard_True; |
91c60b57 |
989 | } |
e276548b |
990 | |
871fa103 |
991 | theSet.Elements.reserve (theSet.Elements.size() + theCount - 2); |
265d4508 |
992 | |
871fa103 |
993 | if (!theIndices.IsNull()) |
e276548b |
994 | { |
265d4508 |
995 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 2; ++aVert) |
e276548b |
996 | { |
871fa103 |
997 | theSet.Elements.push_back (BVH_Vec4i (theIndices->Index (theOffset), |
998 | theIndices->Index (aVert + 1), |
999 | theIndices->Index (aVert + 2), |
1000 | theMatID)); |
e276548b |
1001 | } |
1002 | } |
1003 | else |
1004 | { |
265d4508 |
1005 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 2; ++aVert) |
e276548b |
1006 | { |
871fa103 |
1007 | theSet.Elements.push_back (BVH_Vec4i (theOffset, |
1008 | aVert + 1, |
1009 | aVert + 2, |
1010 | theMatID)); |
e276548b |
1011 | } |
1012 | } |
1013 | |
1014 | return Standard_True; |
1015 | } |
1016 | |
189f85a3 |
1017 | const TCollection_AsciiString OpenGl_View::ShaderSource::EMPTY_PREFIX; |
1018 | |
e276548b |
1019 | // ======================================================================= |
fc73a202 |
1020 | // function : Source |
1021 | // purpose : Returns shader source combined with prefix |
e276548b |
1022 | // ======================================================================= |
91c60b57 |
1023 | TCollection_AsciiString OpenGl_View::ShaderSource::Source() const |
e276548b |
1024 | { |
f8ae3605 |
1025 | const TCollection_AsciiString aVersion = "#version 140"; |
e276548b |
1026 | |
fc73a202 |
1027 | if (myPrefix.IsEmpty()) |
e276548b |
1028 | { |
fc73a202 |
1029 | return aVersion + "\n" + mySource; |
e276548b |
1030 | } |
1031 | |
fc73a202 |
1032 | return aVersion + "\n" + myPrefix + "\n" + mySource; |
e276548b |
1033 | } |
1034 | |
1035 | // ======================================================================= |
ee5befae |
1036 | // function : LoadFromFiles |
fc73a202 |
1037 | // purpose : Loads shader source from specified files |
e276548b |
1038 | // ======================================================================= |
ee5befae |
1039 | Standard_Boolean OpenGl_View::ShaderSource::LoadFromFiles (const TCollection_AsciiString* theFileNames, |
1040 | const TCollection_AsciiString& thePrefix) |
e276548b |
1041 | { |
73722cc9 |
1042 | myError.Clear(); |
fc73a202 |
1043 | mySource.Clear(); |
ee5befae |
1044 | myPrefix = thePrefix; |
1045 | |
73722cc9 |
1046 | TCollection_AsciiString aMissingFiles; |
189f85a3 |
1047 | for (Standard_Integer anIndex = 0; !theFileNames[anIndex].IsEmpty(); ++anIndex) |
fc73a202 |
1048 | { |
1049 | OSD_File aFile (theFileNames[anIndex]); |
73722cc9 |
1050 | if (aFile.Exists()) |
1051 | { |
1052 | aFile.Open (OSD_ReadOnly, OSD_Protection()); |
1053 | } |
1054 | if (!aFile.IsOpen()) |
1055 | { |
1056 | if (!aMissingFiles.IsEmpty()) |
1057 | { |
1058 | aMissingFiles += ", "; |
1059 | } |
1060 | aMissingFiles += TCollection_AsciiString("'") + theFileNames[anIndex] + "'"; |
1061 | continue; |
1062 | } |
1063 | else if (!aMissingFiles.IsEmpty()) |
1064 | { |
1065 | aFile.Close(); |
1066 | continue; |
1067 | } |
265d4508 |
1068 | |
fc73a202 |
1069 | TCollection_AsciiString aSource; |
fc73a202 |
1070 | aFile.Read (aSource, (Standard_Integer) aFile.Size()); |
fc73a202 |
1071 | if (!aSource.IsEmpty()) |
1072 | { |
1073 | mySource += TCollection_AsciiString ("\n") + aSource; |
1074 | } |
fc73a202 |
1075 | aFile.Close(); |
68333c8f |
1076 | } |
189f85a3 |
1077 | |
73722cc9 |
1078 | if (!aMissingFiles.IsEmpty()) |
1079 | { |
1080 | myError = TCollection_AsciiString("Shader files ") + aMissingFiles + " are missing or inaccessible"; |
1081 | return Standard_False; |
1082 | } |
1083 | return Standard_True; |
e276548b |
1084 | } |
1085 | |
ee5befae |
1086 | // ======================================================================= |
1087 | // function : LoadFromStrings |
1088 | // purpose : |
1089 | // ======================================================================= |
1090 | Standard_Boolean OpenGl_View::ShaderSource::LoadFromStrings (const TCollection_AsciiString* theStrings, |
1091 | const TCollection_AsciiString& thePrefix) |
1092 | { |
1093 | myError.Clear(); |
1094 | mySource.Clear(); |
1095 | myPrefix = thePrefix; |
1096 | |
1097 | for (Standard_Integer anIndex = 0; !theStrings[anIndex].IsEmpty(); ++anIndex) |
1098 | { |
1099 | TCollection_AsciiString aSource = theStrings[anIndex]; |
1100 | if (!aSource.IsEmpty()) |
1101 | { |
1102 | mySource += TCollection_AsciiString ("\n") + aSource; |
1103 | } |
1104 | } |
1105 | return Standard_True; |
1106 | } |
1107 | |
e276548b |
1108 | // ======================================================================= |
189f85a3 |
1109 | // function : generateShaderPrefix |
91c60b57 |
1110 | // purpose : Generates shader prefix based on current ray-tracing options |
1111 | // ======================================================================= |
1112 | TCollection_AsciiString OpenGl_View::generateShaderPrefix (const Handle(OpenGl_Context)& theGlContext) const |
1113 | { |
1114 | TCollection_AsciiString aPrefixString = |
1115 | TCollection_AsciiString ("#define STACK_SIZE ") + TCollection_AsciiString (myRaytraceParameters.StackSize) + "\n" + |
1116 | TCollection_AsciiString ("#define NB_BOUNCES ") + TCollection_AsciiString (myRaytraceParameters.NbBounces); |
1117 | |
1118 | if (myRaytraceParameters.TransparentShadows) |
1119 | { |
1120 | aPrefixString += TCollection_AsciiString ("\n#define TRANSPARENT_SHADOWS"); |
1121 | } |
1122 | |
f483f2ed |
1123 | // If OpenGL driver supports bindless textures and texturing |
1124 | // is actually used, activate texturing in ray-tracing mode |
1125 | if (myRaytraceParameters.UseBindlessTextures && theGlContext->arbTexBindless != NULL) |
91c60b57 |
1126 | { |
1127 | aPrefixString += TCollection_AsciiString ("\n#define USE_TEXTURES") + |
1128 | TCollection_AsciiString ("\n#define MAX_TEX_NUMBER ") + TCollection_AsciiString (OpenGl_RaytraceGeometry::MAX_TEX_NUMBER); |
1129 | } |
1130 | |
3a9b5dc8 |
1131 | if (myRaytraceParameters.GlobalIllumination) // path tracing activated |
189f85a3 |
1132 | { |
1133 | aPrefixString += TCollection_AsciiString ("\n#define PATH_TRACING"); |
3a9b5dc8 |
1134 | |
1135 | if (myRaytraceParameters.AdaptiveScreenSampling) // adaptive screen sampling requested |
1136 | { |
e084dbbc |
1137 | if (theGlContext->IsGlGreaterEqual (4, 4)) |
3a9b5dc8 |
1138 | { |
66d1cdc6 |
1139 | aPrefixString += TCollection_AsciiString ("\n#define ADAPTIVE_SAMPLING"); |
e084dbbc |
1140 | if (myRaytraceParameters.AdaptiveScreenSamplingAtomic |
1141 | && theGlContext->CheckExtension ("GL_NV_shader_atomic_float")) |
1142 | { |
1143 | aPrefixString += TCollection_AsciiString ("\n#define ADAPTIVE_SAMPLING_ATOMIC"); |
1144 | } |
3a9b5dc8 |
1145 | } |
1146 | } |
b4327ba8 |
1147 | |
1148 | if (myRaytraceParameters.TwoSidedBsdfModels) // two-sided BSDFs requested |
1149 | { |
1150 | aPrefixString += TCollection_AsciiString ("\n#define TWO_SIDED_BXDF"); |
1151 | } |
eb85ed36 |
1152 | |
1153 | switch (myRaytraceParameters.ToneMappingMethod) |
1154 | { |
1155 | case Graphic3d_ToneMappingMethod_Disabled: |
1156 | break; |
1157 | case Graphic3d_ToneMappingMethod_Filmic: |
1158 | aPrefixString += TCollection_AsciiString ("\n#define TONE_MAPPING_FILMIC"); |
1159 | break; |
1160 | } |
189f85a3 |
1161 | } |
1162 | |
b27ab03d |
1163 | if (myRaytraceParameters.DepthOfField) |
1164 | { |
1165 | aPrefixString += TCollection_AsciiString("\n#define DEPTH_OF_FIELD"); |
1166 | } |
1167 | |
91c60b57 |
1168 | return aPrefixString; |
1169 | } |
1170 | |
1171 | // ======================================================================= |
189f85a3 |
1172 | // function : safeFailBack |
91c60b57 |
1173 | // purpose : Performs safe exit when shaders initialization fails |
1174 | // ======================================================================= |
1175 | Standard_Boolean OpenGl_View::safeFailBack (const TCollection_ExtendedString& theMessage, |
1176 | const Handle(OpenGl_Context)& theGlContext) |
1177 | { |
3b523c4c |
1178 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION, |
1179 | GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, theMessage); |
91c60b57 |
1180 | |
1181 | myRaytraceInitStatus = OpenGl_RT_FAIL; |
1182 | |
1183 | releaseRaytraceResources (theGlContext); |
1184 | |
1185 | return Standard_False; |
1186 | } |
1187 | |
1188 | // ======================================================================= |
189f85a3 |
1189 | // function : initShader |
fc73a202 |
1190 | // purpose : Creates new shader object with specified source |
e276548b |
1191 | // ======================================================================= |
91c60b57 |
1192 | Handle(OpenGl_ShaderObject) OpenGl_View::initShader (const GLenum theType, |
1193 | const ShaderSource& theSource, |
1194 | const Handle(OpenGl_Context)& theGlContext) |
e276548b |
1195 | { |
fc73a202 |
1196 | Handle(OpenGl_ShaderObject) aShader = new OpenGl_ShaderObject (theType); |
e276548b |
1197 | |
91c60b57 |
1198 | if (!aShader->Create (theGlContext)) |
e276548b |
1199 | { |
07039714 |
1200 | const TCollection_ExtendedString aMessage = TCollection_ExtendedString ("Error: Failed to create ") + |
1201 | (theType == GL_VERTEX_SHADER ? "vertex" : "fragment") + " shader object"; |
1202 | |
3b523c4c |
1203 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION, |
1204 | GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, aMessage); |
e276548b |
1205 | |
91c60b57 |
1206 | aShader->Release (theGlContext.operator->()); |
e276548b |
1207 | |
fc73a202 |
1208 | return Handle(OpenGl_ShaderObject)(); |
e276548b |
1209 | } |
5322131b |
1210 | |
91c60b57 |
1211 | if (!aShader->LoadSource (theGlContext, theSource.Source())) |
fc73a202 |
1212 | { |
07039714 |
1213 | const TCollection_ExtendedString aMessage = TCollection_ExtendedString ("Error: Failed to set ") + |
1214 | (theType == GL_VERTEX_SHADER ? "vertex" : "fragment") + " shader source"; |
1215 | |
3b523c4c |
1216 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION, |
1217 | GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, aMessage); |
e276548b |
1218 | |
91c60b57 |
1219 | aShader->Release (theGlContext.operator->()); |
e276548b |
1220 | |
fc73a202 |
1221 | return Handle(OpenGl_ShaderObject)(); |
1222 | } |
e276548b |
1223 | |
fc73a202 |
1224 | TCollection_AsciiString aBuildLog; |
e276548b |
1225 | |
91c60b57 |
1226 | if (!aShader->Compile (theGlContext)) |
e276548b |
1227 | { |
91c60b57 |
1228 | aShader->FetchInfoLog (theGlContext, aBuildLog); |
fc73a202 |
1229 | |
07039714 |
1230 | const TCollection_ExtendedString aMessage = TCollection_ExtendedString ("Error: Failed to compile ") + |
1231 | (theType == GL_VERTEX_SHADER ? "vertex" : "fragment") + " shader object:\n" + aBuildLog; |
1232 | |
3b523c4c |
1233 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION, |
1234 | GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, aMessage); |
e276548b |
1235 | |
91c60b57 |
1236 | aShader->Release (theGlContext.operator->()); |
fc73a202 |
1237 | |
3a9b5dc8 |
1238 | #ifdef RAY_TRACE_PRINT_INFO |
1239 | std::cout << "Shader build log:\n" << aBuildLog << "\n"; |
1240 | #endif |
1241 | |
fc73a202 |
1242 | return Handle(OpenGl_ShaderObject)(); |
1243 | } |
91c60b57 |
1244 | else if (theGlContext->caps->glslWarnings) |
fc73a202 |
1245 | { |
91c60b57 |
1246 | aShader->FetchInfoLog (theGlContext, aBuildLog); |
07039714 |
1247 | |
1248 | if (!aBuildLog.IsEmpty() && !aBuildLog.IsEqual ("No errors.\n")) |
fc73a202 |
1249 | { |
07039714 |
1250 | const TCollection_ExtendedString aMessage = TCollection_ExtendedString (theType == GL_VERTEX_SHADER ? |
1251 | "Vertex" : "Fragment") + " shader was compiled with following warnings:\n" + aBuildLog; |
1252 | |
3b523c4c |
1253 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION, |
1254 | GL_DEBUG_TYPE_PORTABILITY, 0, GL_DEBUG_SEVERITY_LOW, aMessage); |
fc73a202 |
1255 | } |
3a9b5dc8 |
1256 | |
1257 | #ifdef RAY_TRACE_PRINT_INFO |
1258 | std::cout << "Shader build log:\n" << aBuildLog << "\n"; |
1259 | #endif |
07039714 |
1260 | } |
e276548b |
1261 | |
fc73a202 |
1262 | return aShader; |
e276548b |
1263 | } |
1264 | |
1265 | // ======================================================================= |
189f85a3 |
1266 | // function : initProgram |
1267 | // purpose : Creates GLSL program from the given shader objects |
1268 | // ======================================================================= |
1269 | Handle(OpenGl_ShaderProgram) OpenGl_View::initProgram (const Handle(OpenGl_Context)& theGlContext, |
1270 | const Handle(OpenGl_ShaderObject)& theVertShader, |
d95f5ce1 |
1271 | const Handle(OpenGl_ShaderObject)& theFragShader, |
1272 | const TCollection_AsciiString& theName) |
189f85a3 |
1273 | { |
d95f5ce1 |
1274 | const TCollection_AsciiString anId = TCollection_AsciiString("occt_rt_") + theName; |
1275 | Handle(OpenGl_ShaderProgram) aProgram = new OpenGl_ShaderProgram(Handle(Graphic3d_ShaderProgram)(), anId); |
189f85a3 |
1276 | |
1277 | if (!aProgram->Create (theGlContext)) |
1278 | { |
1279 | theVertShader->Release (theGlContext.operator->()); |
1280 | |
3b523c4c |
1281 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION, |
1282 | GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, "Failed to create shader program"); |
189f85a3 |
1283 | |
1284 | return Handle(OpenGl_ShaderProgram)(); |
1285 | } |
1286 | |
1287 | if (!aProgram->AttachShader (theGlContext, theVertShader) |
1288 | || !aProgram->AttachShader (theGlContext, theFragShader)) |
1289 | { |
1290 | theVertShader->Release (theGlContext.operator->()); |
1291 | |
3b523c4c |
1292 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION, |
1293 | GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, "Failed to attach shader objects"); |
189f85a3 |
1294 | |
1295 | return Handle(OpenGl_ShaderProgram)(); |
1296 | } |
1297 | |
1298 | aProgram->SetAttributeName (theGlContext, Graphic3d_TOA_POS, "occVertex"); |
1299 | |
1300 | TCollection_AsciiString aLinkLog; |
1301 | |
1302 | if (!aProgram->Link (theGlContext)) |
1303 | { |
1304 | aProgram->FetchInfoLog (theGlContext, aLinkLog); |
1305 | |
1306 | const TCollection_ExtendedString aMessage = TCollection_ExtendedString ( |
1307 | "Failed to link shader program:\n") + aLinkLog; |
1308 | |
3b523c4c |
1309 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION, |
1310 | GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, aMessage); |
189f85a3 |
1311 | |
1312 | return Handle(OpenGl_ShaderProgram)(); |
1313 | } |
1314 | else if (theGlContext->caps->glslWarnings) |
1315 | { |
47e9c178 |
1316 | aProgram->FetchInfoLog (theGlContext, aLinkLog); |
189f85a3 |
1317 | if (!aLinkLog.IsEmpty() && !aLinkLog.IsEqual ("No errors.\n")) |
1318 | { |
1319 | const TCollection_ExtendedString aMessage = TCollection_ExtendedString ( |
1320 | "Shader program was linked with following warnings:\n") + aLinkLog; |
1321 | |
3b523c4c |
1322 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION, |
1323 | GL_DEBUG_TYPE_PORTABILITY, 0, GL_DEBUG_SEVERITY_LOW, aMessage); |
189f85a3 |
1324 | } |
1325 | } |
1326 | |
1327 | return aProgram; |
1328 | } |
1329 | |
1330 | // ======================================================================= |
1331 | // function : initRaytraceResources |
91c60b57 |
1332 | // purpose : Initializes OpenGL/GLSL shader programs |
e276548b |
1333 | // ======================================================================= |
66d1cdc6 |
1334 | Standard_Boolean OpenGl_View::initRaytraceResources (const Standard_Integer theSizeX, |
1335 | const Standard_Integer theSizeY, |
1336 | const Handle(OpenGl_Context)& theGlContext) |
e276548b |
1337 | { |
91c60b57 |
1338 | if (myRaytraceInitStatus == OpenGl_RT_FAIL) |
1339 | { |
1340 | return Standard_False; |
1341 | } |
265d4508 |
1342 | |
91c60b57 |
1343 | Standard_Boolean aToRebuildShaders = Standard_False; |
265d4508 |
1344 | |
d877e610 |
1345 | if (myRenderParams.RebuildRayTracingShaders) // requires complete re-initialization |
1346 | { |
1347 | myRaytraceInitStatus = OpenGl_RT_NONE; |
1348 | releaseRaytraceResources (theGlContext, Standard_True); |
1349 | myRenderParams.RebuildRayTracingShaders = Standard_False; // clear rebuilding flag |
1350 | } |
1351 | |
91c60b57 |
1352 | if (myRaytraceInitStatus == OpenGl_RT_INIT) |
1353 | { |
1354 | if (!myIsRaytraceDataValid) |
d877e610 |
1355 | { |
91c60b57 |
1356 | return Standard_True; |
d877e610 |
1357 | } |
07039714 |
1358 | |
91c60b57 |
1359 | const Standard_Integer aRequiredStackSize = |
f2474958 |
1360 | myRaytraceGeometry.TopLevelTreeDepth() + myRaytraceGeometry.BotLevelTreeDepth(); |
e276548b |
1361 | |
91c60b57 |
1362 | if (myRaytraceParameters.StackSize < aRequiredStackSize) |
1363 | { |
1364 | myRaytraceParameters.StackSize = Max (aRequiredStackSize, THE_DEFAULT_STACK_SIZE); |
e276548b |
1365 | |
fc73a202 |
1366 | aToRebuildShaders = Standard_True; |
1367 | } |
1368 | else |
1369 | { |
bc8c79bb |
1370 | if (aRequiredStackSize < myRaytraceParameters.StackSize) |
fc73a202 |
1371 | { |
bc8c79bb |
1372 | if (myRaytraceParameters.StackSize > THE_DEFAULT_STACK_SIZE) |
fc73a202 |
1373 | { |
bc8c79bb |
1374 | myRaytraceParameters.StackSize = Max (aRequiredStackSize, THE_DEFAULT_STACK_SIZE); |
fc73a202 |
1375 | aToRebuildShaders = Standard_True; |
1376 | } |
1377 | } |
1378 | } |
e276548b |
1379 | |
b4327ba8 |
1380 | if (myRenderParams.RaytracingDepth != myRaytraceParameters.NbBounces |
1381 | || myRenderParams.IsTransparentShadowEnabled != myRaytraceParameters.TransparentShadows |
1382 | || myRenderParams.IsGlobalIlluminationEnabled != myRaytraceParameters.GlobalIllumination |
1383 | || myRenderParams.TwoSidedBsdfModels != myRaytraceParameters.TwoSidedBsdfModels |
66d1cdc6 |
1384 | || myRaytraceGeometry.HasTextures() != myRaytraceParameters.UseBindlessTextures) |
f483f2ed |
1385 | { |
b4327ba8 |
1386 | myRaytraceParameters.NbBounces = myRenderParams.RaytracingDepth; |
1387 | myRaytraceParameters.TransparentShadows = myRenderParams.IsTransparentShadowEnabled; |
1388 | myRaytraceParameters.GlobalIllumination = myRenderParams.IsGlobalIlluminationEnabled; |
1389 | myRaytraceParameters.TwoSidedBsdfModels = myRenderParams.TwoSidedBsdfModels; |
f483f2ed |
1390 | myRaytraceParameters.UseBindlessTextures = myRaytraceGeometry.HasTextures(); |
189f85a3 |
1391 | aToRebuildShaders = Standard_True; |
1392 | } |
1393 | |
e084dbbc |
1394 | if (myRenderParams.AdaptiveScreenSampling != myRaytraceParameters.AdaptiveScreenSampling |
1395 | || myRenderParams.AdaptiveScreenSamplingAtomic != myRaytraceParameters.AdaptiveScreenSamplingAtomic) |
3a9b5dc8 |
1396 | { |
e084dbbc |
1397 | myRaytraceParameters.AdaptiveScreenSampling = myRenderParams.AdaptiveScreenSampling; |
1398 | myRaytraceParameters.AdaptiveScreenSamplingAtomic = myRenderParams.AdaptiveScreenSamplingAtomic; |
3a9b5dc8 |
1399 | if (myRenderParams.AdaptiveScreenSampling) // adaptive sampling was requested |
1400 | { |
1401 | if (!theGlContext->HasRayTracingAdaptiveSampling()) |
1402 | { |
1403 | // disable the feature if it is not supported |
1404 | myRaytraceParameters.AdaptiveScreenSampling = myRenderParams.AdaptiveScreenSampling = Standard_False; |
1405 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_PORTABILITY, 0, GL_DEBUG_SEVERITY_LOW, |
e084dbbc |
1406 | "Adaptive sampling is not supported (OpenGL 4.4 is missing)"); |
1407 | } |
1408 | else if (myRaytraceParameters.AdaptiveScreenSamplingAtomic |
1409 | && !theGlContext->HasRayTracingAdaptiveSamplingAtomic()) |
1410 | { |
1411 | // disable the feature if it is not supported |
1412 | myRaytraceParameters.AdaptiveScreenSamplingAtomic = myRenderParams.AdaptiveScreenSamplingAtomic = Standard_False; |
1413 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_PORTABILITY, 0, GL_DEBUG_SEVERITY_LOW, |
1414 | "Atomic adaptive sampling is not supported (GL_NV_shader_atomic_float is missing)"); |
3a9b5dc8 |
1415 | } |
1416 | } |
1417 | |
1418 | aToRebuildShaders = Standard_True; |
1419 | } |
66d1cdc6 |
1420 | myTileSampler.SetSize (myRenderParams, myRaytraceParameters.AdaptiveScreenSampling ? Graphic3d_Vec2i (theSizeX, theSizeY) : Graphic3d_Vec2i (0, 0)); |
3a9b5dc8 |
1421 | |
b27ab03d |
1422 | const bool toEnableDof = !myCamera->IsOrthographic() && myRaytraceParameters.GlobalIllumination; |
1423 | if (myRaytraceParameters.DepthOfField != toEnableDof) |
1424 | { |
1425 | myRaytraceParameters.DepthOfField = toEnableDof; |
1426 | aToRebuildShaders = Standard_True; |
1427 | } |
1428 | |
eb85ed36 |
1429 | if (myRenderParams.ToneMappingMethod != myRaytraceParameters.ToneMappingMethod) |
1430 | { |
1431 | myRaytraceParameters.ToneMappingMethod = myRenderParams.ToneMappingMethod; |
1432 | aToRebuildShaders = true; |
1433 | } |
1434 | |
fc73a202 |
1435 | if (aToRebuildShaders) |
1436 | { |
189f85a3 |
1437 | // Reject accumulated frames |
1438 | myAccumFrames = 0; |
e276548b |
1439 | |
3a9b5dc8 |
1440 | // Environment map should be updated |
91c60b57 |
1441 | myToUpdateEnvironmentMap = Standard_True; |
84c71f29 |
1442 | |
3a9b5dc8 |
1443 | const TCollection_AsciiString aPrefixString = generateShaderPrefix (theGlContext); |
bc8c79bb |
1444 | |
1445 | #ifdef RAY_TRACE_PRINT_INFO |
1446 | std::cout << "GLSL prefix string:" << std::endl << aPrefixString << std::endl; |
1447 | #endif |
265d4508 |
1448 | |
bc8c79bb |
1449 | myRaytraceShaderSource.SetPrefix (aPrefixString); |
1450 | myPostFSAAShaderSource.SetPrefix (aPrefixString); |
3a9b5dc8 |
1451 | myOutImageShaderSource.SetPrefix (aPrefixString); |
265d4508 |
1452 | |
737e9a8d |
1453 | if (!myRaytraceShader->LoadAndCompile (theGlContext, myRaytraceProgram->ResourceId(), myRaytraceShaderSource.Source()) |
1454 | || !myPostFSAAShader->LoadAndCompile (theGlContext, myPostFSAAProgram->ResourceId(), myPostFSAAShaderSource.Source()) |
1455 | || !myOutImageShader->LoadAndCompile (theGlContext, myOutImageProgram->ResourceId(), myOutImageShaderSource.Source())) |
fc73a202 |
1456 | { |
91c60b57 |
1457 | return safeFailBack ("Failed to compile ray-tracing fragment shaders", theGlContext); |
fc73a202 |
1458 | } |
1459 | |
91c60b57 |
1460 | myRaytraceProgram->SetAttributeName (theGlContext, Graphic3d_TOA_POS, "occVertex"); |
1461 | myPostFSAAProgram->SetAttributeName (theGlContext, Graphic3d_TOA_POS, "occVertex"); |
3a9b5dc8 |
1462 | myOutImageProgram->SetAttributeName (theGlContext, Graphic3d_TOA_POS, "occVertex"); |
1463 | |
91c60b57 |
1464 | if (!myRaytraceProgram->Link (theGlContext) |
3a9b5dc8 |
1465 | || !myPostFSAAProgram->Link (theGlContext) |
1466 | || !myOutImageProgram->Link (theGlContext)) |
fc73a202 |
1467 | { |
91c60b57 |
1468 | return safeFailBack ("Failed to initialize vertex attributes for ray-tracing program", theGlContext); |
fc73a202 |
1469 | } |
1470 | } |
e276548b |
1471 | } |
1472 | |
91c60b57 |
1473 | if (myRaytraceInitStatus == OpenGl_RT_NONE) |
fc73a202 |
1474 | { |
6e728f3b |
1475 | myAccumFrames = 0; // accumulation should be restarted |
d877e610 |
1476 | |
91c60b57 |
1477 | if (!theGlContext->IsGlGreaterEqual (3, 1)) |
fc73a202 |
1478 | { |
91c60b57 |
1479 | return safeFailBack ("Ray-tracing requires OpenGL 3.1 and higher", theGlContext); |
25ef750e |
1480 | } |
91c60b57 |
1481 | else if (!theGlContext->arbTboRGB32) |
25ef750e |
1482 | { |
91c60b57 |
1483 | return safeFailBack ("Ray-tracing requires OpenGL 4.0+ or GL_ARB_texture_buffer_object_rgb32 extension", theGlContext); |
1484 | } |
1485 | else if (!theGlContext->arbFBOBlit) |
1486 | { |
1487 | return safeFailBack ("Ray-tracing requires EXT_framebuffer_blit extension", theGlContext); |
fc73a202 |
1488 | } |
5322131b |
1489 | |
c357e426 |
1490 | myRaytraceParameters.NbBounces = myRenderParams.RaytracingDepth; |
bc8c79bb |
1491 | |
ee5befae |
1492 | const TCollection_AsciiString aShaderFolder = Graphic3d_ShaderProgram::ShadersFolder(); |
fc73a202 |
1493 | if (myIsRaytraceDataValid) |
1494 | { |
bc8c79bb |
1495 | myRaytraceParameters.StackSize = Max (THE_DEFAULT_STACK_SIZE, |
f2474958 |
1496 | myRaytraceGeometry.TopLevelTreeDepth() + myRaytraceGeometry.BotLevelTreeDepth()); |
fc73a202 |
1497 | } |
265d4508 |
1498 | |
3a9b5dc8 |
1499 | const TCollection_AsciiString aPrefixString = generateShaderPrefix (theGlContext); |
bc8c79bb |
1500 | |
1501 | #ifdef RAY_TRACE_PRINT_INFO |
1502 | std::cout << "GLSL prefix string:" << std::endl << aPrefixString << std::endl; |
1503 | #endif |
1504 | |
73722cc9 |
1505 | ShaderSource aBasicVertShaderSrc; |
fc73a202 |
1506 | { |
ee5befae |
1507 | if (!aShaderFolder.IsEmpty()) |
fc73a202 |
1508 | { |
ee5befae |
1509 | const TCollection_AsciiString aFiles[] = { aShaderFolder + "/RaytraceBase.vs", "" }; |
1510 | if (!aBasicVertShaderSrc.LoadFromFiles (aFiles)) |
1511 | { |
1512 | return safeFailBack (aBasicVertShaderSrc.ErrorDescription(), theGlContext); |
1513 | } |
1514 | } |
1515 | else |
1516 | { |
1517 | const TCollection_AsciiString aSrcShaders[] = { Shaders_RaytraceBase_vs, "" }; |
1518 | aBasicVertShaderSrc.LoadFromStrings (aSrcShaders); |
fc73a202 |
1519 | } |
73722cc9 |
1520 | } |
265d4508 |
1521 | |
73722cc9 |
1522 | { |
ee5befae |
1523 | if (!aShaderFolder.IsEmpty()) |
1524 | { |
1525 | const TCollection_AsciiString aFiles[] = { aShaderFolder + "/RaytraceBase.fs", |
1526 | aShaderFolder + "/PathtraceBase.fs", |
1527 | aShaderFolder + "/RaytraceRender.fs", |
1528 | "" }; |
1529 | if (!myRaytraceShaderSource.LoadFromFiles (aFiles, aPrefixString)) |
1530 | { |
1531 | return safeFailBack (myRaytraceShaderSource.ErrorDescription(), theGlContext); |
1532 | } |
1533 | } |
1534 | else |
73722cc9 |
1535 | { |
ee5befae |
1536 | const TCollection_AsciiString aSrcShaders[] = { Shaders_RaytraceBase_fs, |
1537 | Shaders_PathtraceBase_fs, |
1538 | Shaders_RaytraceRender_fs, |
1539 | "" }; |
1540 | myRaytraceShaderSource.LoadFromStrings (aSrcShaders, aPrefixString); |
73722cc9 |
1541 | } |
e276548b |
1542 | |
73722cc9 |
1543 | Handle(OpenGl_ShaderObject) aBasicVertShader = initShader (GL_VERTEX_SHADER, aBasicVertShaderSrc, theGlContext); |
1544 | if (aBasicVertShader.IsNull()) |
1545 | { |
1546 | return safeFailBack ("Failed to initialize ray-trace vertex shader", theGlContext); |
1547 | } |
265d4508 |
1548 | |
91c60b57 |
1549 | myRaytraceShader = initShader (GL_FRAGMENT_SHADER, myRaytraceShaderSource, theGlContext); |
fc73a202 |
1550 | if (myRaytraceShader.IsNull()) |
1551 | { |
91c60b57 |
1552 | aBasicVertShader->Release (theGlContext.operator->()); |
91c60b57 |
1553 | return safeFailBack ("Failed to initialize ray-trace fragment shader", theGlContext); |
fc73a202 |
1554 | } |
265d4508 |
1555 | |
d95f5ce1 |
1556 | myRaytraceProgram = initProgram (theGlContext, aBasicVertShader, myRaytraceShader, "main"); |
189f85a3 |
1557 | if (myRaytraceProgram.IsNull()) |
fc73a202 |
1558 | { |
189f85a3 |
1559 | return safeFailBack ("Failed to initialize ray-trace shader program", theGlContext); |
fc73a202 |
1560 | } |
1561 | } |
265d4508 |
1562 | |
fc73a202 |
1563 | { |
ee5befae |
1564 | if (!aShaderFolder.IsEmpty()) |
1565 | { |
1566 | const TCollection_AsciiString aFiles[] = { aShaderFolder + "/RaytraceBase.fs", aShaderFolder + "/RaytraceSmooth.fs", "" }; |
1567 | if (!myPostFSAAShaderSource.LoadFromFiles (aFiles, aPrefixString)) |
1568 | { |
1569 | return safeFailBack (myPostFSAAShaderSource.ErrorDescription(), theGlContext); |
1570 | } |
1571 | } |
1572 | else |
73722cc9 |
1573 | { |
ee5befae |
1574 | const TCollection_AsciiString aSrcShaders[] = { Shaders_RaytraceBase_fs, Shaders_RaytraceSmooth_fs, "" }; |
1575 | myPostFSAAShaderSource.LoadFromStrings (aSrcShaders, aPrefixString); |
73722cc9 |
1576 | } |
265d4508 |
1577 | |
73722cc9 |
1578 | Handle(OpenGl_ShaderObject) aBasicVertShader = initShader (GL_VERTEX_SHADER, aBasicVertShaderSrc, theGlContext); |
fc73a202 |
1579 | if (aBasicVertShader.IsNull()) |
1580 | { |
91c60b57 |
1581 | return safeFailBack ("Failed to initialize FSAA vertex shader", theGlContext); |
fc73a202 |
1582 | } |
265d4508 |
1583 | |
91c60b57 |
1584 | myPostFSAAShader = initShader (GL_FRAGMENT_SHADER, myPostFSAAShaderSource, theGlContext); |
fc73a202 |
1585 | if (myPostFSAAShader.IsNull()) |
1586 | { |
91c60b57 |
1587 | aBasicVertShader->Release (theGlContext.operator->()); |
91c60b57 |
1588 | return safeFailBack ("Failed to initialize FSAA fragment shader", theGlContext); |
fc73a202 |
1589 | } |
265d4508 |
1590 | |
d95f5ce1 |
1591 | myPostFSAAProgram = initProgram (theGlContext, aBasicVertShader, myPostFSAAShader, "fsaa"); |
189f85a3 |
1592 | if (myPostFSAAProgram.IsNull()) |
fc73a202 |
1593 | { |
189f85a3 |
1594 | return safeFailBack ("Failed to initialize FSAA shader program", theGlContext); |
fc73a202 |
1595 | } |
189f85a3 |
1596 | } |
fc73a202 |
1597 | |
189f85a3 |
1598 | { |
ee5befae |
1599 | if (!aShaderFolder.IsEmpty()) |
1600 | { |
1601 | const TCollection_AsciiString aFiles[] = { aShaderFolder + "/Display.fs", "" }; |
1602 | if (!myOutImageShaderSource.LoadFromFiles (aFiles, aPrefixString)) |
1603 | { |
1604 | return safeFailBack (myOutImageShaderSource.ErrorDescription(), theGlContext); |
1605 | } |
1606 | } |
1607 | else |
73722cc9 |
1608 | { |
ee5befae |
1609 | const TCollection_AsciiString aSrcShaders[] = { Shaders_Display_fs, "" }; |
1610 | myOutImageShaderSource.LoadFromStrings (aSrcShaders, aPrefixString); |
73722cc9 |
1611 | } |
fc73a202 |
1612 | |
73722cc9 |
1613 | Handle(OpenGl_ShaderObject) aBasicVertShader = initShader (GL_VERTEX_SHADER, aBasicVertShaderSrc, theGlContext); |
189f85a3 |
1614 | if (aBasicVertShader.IsNull()) |
1615 | { |
1616 | return safeFailBack ("Failed to set vertex shader source", theGlContext); |
fc73a202 |
1617 | } |
1618 | |
3a9b5dc8 |
1619 | myOutImageShader = initShader (GL_FRAGMENT_SHADER, myOutImageShaderSource, theGlContext); |
1620 | if (myOutImageShader.IsNull()) |
fc73a202 |
1621 | { |
189f85a3 |
1622 | aBasicVertShader->Release (theGlContext.operator->()); |
189f85a3 |
1623 | return safeFailBack ("Failed to set display fragment shader source", theGlContext); |
07039714 |
1624 | } |
fc73a202 |
1625 | |
d95f5ce1 |
1626 | myOutImageProgram = initProgram (theGlContext, aBasicVertShader, myOutImageShader, "out"); |
189f85a3 |
1627 | if (myOutImageProgram.IsNull()) |
1628 | { |
3a9b5dc8 |
1629 | return safeFailBack ("Failed to initialize display shader program", theGlContext); |
fc73a202 |
1630 | } |
e276548b |
1631 | } |
fc73a202 |
1632 | } |
e276548b |
1633 | |
91c60b57 |
1634 | if (myRaytraceInitStatus == OpenGl_RT_NONE || aToRebuildShaders) |
fc73a202 |
1635 | { |
1636 | for (Standard_Integer anIndex = 0; anIndex < 2; ++anIndex) |
e276548b |
1637 | { |
fc73a202 |
1638 | Handle(OpenGl_ShaderProgram)& aShaderProgram = |
1639 | (anIndex == 0) ? myRaytraceProgram : myPostFSAAProgram; |
1640 | |
91c60b57 |
1641 | theGlContext->BindProgram (aShaderProgram); |
fc73a202 |
1642 | |
91c60b57 |
1643 | aShaderProgram->SetSampler (theGlContext, |
fc73a202 |
1644 | "uSceneMinPointTexture", OpenGl_RT_SceneMinPointTexture); |
91c60b57 |
1645 | aShaderProgram->SetSampler (theGlContext, |
fc73a202 |
1646 | "uSceneMaxPointTexture", OpenGl_RT_SceneMaxPointTexture); |
91c60b57 |
1647 | aShaderProgram->SetSampler (theGlContext, |
fc73a202 |
1648 | "uSceneNodeInfoTexture", OpenGl_RT_SceneNodeInfoTexture); |
91c60b57 |
1649 | aShaderProgram->SetSampler (theGlContext, |
fc73a202 |
1650 | "uGeometryVertexTexture", OpenGl_RT_GeometryVertexTexture); |
91c60b57 |
1651 | aShaderProgram->SetSampler (theGlContext, |
fc73a202 |
1652 | "uGeometryNormalTexture", OpenGl_RT_GeometryNormalTexture); |
91c60b57 |
1653 | aShaderProgram->SetSampler (theGlContext, |
25ef750e |
1654 | "uGeometryTexCrdTexture", OpenGl_RT_GeometryTexCrdTexture); |
91c60b57 |
1655 | aShaderProgram->SetSampler (theGlContext, |
25ef750e |
1656 | "uGeometryTriangTexture", OpenGl_RT_GeometryTriangTexture); |
91c60b57 |
1657 | aShaderProgram->SetSampler (theGlContext, |
84c71f29 |
1658 | "uSceneTransformTexture", OpenGl_RT_SceneTransformTexture); |
91c60b57 |
1659 | aShaderProgram->SetSampler (theGlContext, |
84c71f29 |
1660 | "uEnvironmentMapTexture", OpenGl_RT_EnvironmentMapTexture); |
91c60b57 |
1661 | aShaderProgram->SetSampler (theGlContext, |
25ef750e |
1662 | "uRaytraceMaterialTexture", OpenGl_RT_RaytraceMaterialTexture); |
91c60b57 |
1663 | aShaderProgram->SetSampler (theGlContext, |
25ef750e |
1664 | "uRaytraceLightSrcTexture", OpenGl_RT_RaytraceLightSrcTexture); |
fc73a202 |
1665 | |
1666 | if (anIndex == 1) |
1667 | { |
91c60b57 |
1668 | aShaderProgram->SetSampler (theGlContext, |
189f85a3 |
1669 | "uFSAAInputTexture", OpenGl_RT_FsaaInputTexture); |
1670 | } |
1671 | else |
1672 | { |
1673 | aShaderProgram->SetSampler (theGlContext, |
1674 | "uAccumTexture", OpenGl_RT_PrevAccumTexture); |
fc73a202 |
1675 | } |
265d4508 |
1676 | |
fc73a202 |
1677 | myUniformLocations[anIndex][OpenGl_RT_aPosition] = |
91c60b57 |
1678 | aShaderProgram->GetAttributeLocation (theGlContext, "occVertex"); |
fc73a202 |
1679 | |
1680 | myUniformLocations[anIndex][OpenGl_RT_uOriginLB] = |
91c60b57 |
1681 | aShaderProgram->GetUniformLocation (theGlContext, "uOriginLB"); |
fc73a202 |
1682 | myUniformLocations[anIndex][OpenGl_RT_uOriginRB] = |
91c60b57 |
1683 | aShaderProgram->GetUniformLocation (theGlContext, "uOriginRB"); |
fc73a202 |
1684 | myUniformLocations[anIndex][OpenGl_RT_uOriginLT] = |
91c60b57 |
1685 | aShaderProgram->GetUniformLocation (theGlContext, "uOriginLT"); |
fc73a202 |
1686 | myUniformLocations[anIndex][OpenGl_RT_uOriginRT] = |
91c60b57 |
1687 | aShaderProgram->GetUniformLocation (theGlContext, "uOriginRT"); |
fc73a202 |
1688 | myUniformLocations[anIndex][OpenGl_RT_uDirectLB] = |
91c60b57 |
1689 | aShaderProgram->GetUniformLocation (theGlContext, "uDirectLB"); |
fc73a202 |
1690 | myUniformLocations[anIndex][OpenGl_RT_uDirectRB] = |
91c60b57 |
1691 | aShaderProgram->GetUniformLocation (theGlContext, "uDirectRB"); |
fc73a202 |
1692 | myUniformLocations[anIndex][OpenGl_RT_uDirectLT] = |
91c60b57 |
1693 | aShaderProgram->GetUniformLocation (theGlContext, "uDirectLT"); |
fc73a202 |
1694 | myUniformLocations[anIndex][OpenGl_RT_uDirectRT] = |
91c60b57 |
1695 | aShaderProgram->GetUniformLocation (theGlContext, "uDirectRT"); |
3a9b5dc8 |
1696 | myUniformLocations[anIndex][OpenGl_RT_uViewPrMat] = |
1d865689 |
1697 | aShaderProgram->GetUniformLocation (theGlContext, "uViewMat"); |
25ef750e |
1698 | myUniformLocations[anIndex][OpenGl_RT_uUnviewMat] = |
91c60b57 |
1699 | aShaderProgram->GetUniformLocation (theGlContext, "uUnviewMat"); |
fc73a202 |
1700 | |
1701 | myUniformLocations[anIndex][OpenGl_RT_uSceneRad] = |
91c60b57 |
1702 | aShaderProgram->GetUniformLocation (theGlContext, "uSceneRadius"); |
fc73a202 |
1703 | myUniformLocations[anIndex][OpenGl_RT_uSceneEps] = |
91c60b57 |
1704 | aShaderProgram->GetUniformLocation (theGlContext, "uSceneEpsilon"); |
25ef750e |
1705 | myUniformLocations[anIndex][OpenGl_RT_uLightCount] = |
91c60b57 |
1706 | aShaderProgram->GetUniformLocation (theGlContext, "uLightCount"); |
25ef750e |
1707 | myUniformLocations[anIndex][OpenGl_RT_uLightAmbnt] = |
91c60b57 |
1708 | aShaderProgram->GetUniformLocation (theGlContext, "uGlobalAmbient"); |
fc73a202 |
1709 | |
1710 | myUniformLocations[anIndex][OpenGl_RT_uOffsetX] = |
91c60b57 |
1711 | aShaderProgram->GetUniformLocation (theGlContext, "uOffsetX"); |
fc73a202 |
1712 | myUniformLocations[anIndex][OpenGl_RT_uOffsetY] = |
91c60b57 |
1713 | aShaderProgram->GetUniformLocation (theGlContext, "uOffsetY"); |
fc73a202 |
1714 | myUniformLocations[anIndex][OpenGl_RT_uSamples] = |
91c60b57 |
1715 | aShaderProgram->GetUniformLocation (theGlContext, "uSamples"); |
84c71f29 |
1716 | |
189f85a3 |
1717 | myUniformLocations[anIndex][OpenGl_RT_uTexSamplersArray] = |
91c60b57 |
1718 | aShaderProgram->GetUniformLocation (theGlContext, "uTextureSamplers"); |
25ef750e |
1719 | |
189f85a3 |
1720 | myUniformLocations[anIndex][OpenGl_RT_uShadowsEnabled] = |
1721 | aShaderProgram->GetUniformLocation (theGlContext, "uShadowsEnabled"); |
1722 | myUniformLocations[anIndex][OpenGl_RT_uReflectEnabled] = |
1723 | aShaderProgram->GetUniformLocation (theGlContext, "uReflectEnabled"); |
1724 | myUniformLocations[anIndex][OpenGl_RT_uSphereMapEnabled] = |
1725 | aShaderProgram->GetUniformLocation (theGlContext, "uSphereMapEnabled"); |
1726 | myUniformLocations[anIndex][OpenGl_RT_uSphereMapForBack] = |
1727 | aShaderProgram->GetUniformLocation (theGlContext, "uSphereMapForBack"); |
8c820969 |
1728 | myUniformLocations[anIndex][OpenGl_RT_uBlockedRngEnabled] = |
1729 | aShaderProgram->GetUniformLocation (theGlContext, "uBlockedRngEnabled"); |
189f85a3 |
1730 | |
3a9b5dc8 |
1731 | myUniformLocations[anIndex][OpenGl_RT_uWinSizeX] = |
1732 | aShaderProgram->GetUniformLocation (theGlContext, "uWinSizeX"); |
1733 | myUniformLocations[anIndex][OpenGl_RT_uWinSizeY] = |
1734 | aShaderProgram->GetUniformLocation (theGlContext, "uWinSizeY"); |
1735 | |
383c6c9f |
1736 | myUniformLocations[anIndex][OpenGl_RT_uAccumSamples] = |
1737 | aShaderProgram->GetUniformLocation (theGlContext, "uAccumSamples"); |
189f85a3 |
1738 | myUniformLocations[anIndex][OpenGl_RT_uFrameRndSeed] = |
1739 | aShaderProgram->GetUniformLocation (theGlContext, "uFrameRndSeed"); |
1740 | |
3a9b5dc8 |
1741 | myUniformLocations[anIndex][OpenGl_RT_uRenderImage] = |
1742 | aShaderProgram->GetUniformLocation (theGlContext, "uRenderImage"); |
e084dbbc |
1743 | myUniformLocations[anIndex][OpenGl_RT_uTilesImage] = |
1744 | aShaderProgram->GetUniformLocation (theGlContext, "uTilesImage"); |
3a9b5dc8 |
1745 | myUniformLocations[anIndex][OpenGl_RT_uOffsetImage] = |
1746 | aShaderProgram->GetUniformLocation (theGlContext, "uOffsetImage"); |
66d1cdc6 |
1747 | myUniformLocations[anIndex][OpenGl_RT_uTileSize] = |
1748 | aShaderProgram->GetUniformLocation (theGlContext, "uTileSize"); |
1749 | myUniformLocations[anIndex][OpenGl_RT_uVarianceScaleFactor] = |
1750 | aShaderProgram->GetUniformLocation (theGlContext, "uVarianceScaleFactor"); |
3a9b5dc8 |
1751 | |
189f85a3 |
1752 | myUniformLocations[anIndex][OpenGl_RT_uBackColorTop] = |
1753 | aShaderProgram->GetUniformLocation (theGlContext, "uBackColorTop"); |
1754 | myUniformLocations[anIndex][OpenGl_RT_uBackColorBot] = |
1755 | aShaderProgram->GetUniformLocation (theGlContext, "uBackColorBot"); |
b09447ed |
1756 | |
1757 | myUniformLocations[anIndex][OpenGl_RT_uMaxRadiance] = |
1758 | aShaderProgram->GetUniformLocation (theGlContext, "uMaxRadiance"); |
fc73a202 |
1759 | } |
265d4508 |
1760 | |
189f85a3 |
1761 | theGlContext->BindProgram (myOutImageProgram); |
1762 | |
1763 | myOutImageProgram->SetSampler (theGlContext, |
1764 | "uInputTexture", OpenGl_RT_PrevAccumTexture); |
1765 | |
1d865689 |
1766 | myOutImageProgram->SetSampler (theGlContext, |
3a9b5dc8 |
1767 | "uDepthTexture", OpenGl_RT_RaytraceDepthTexture); |
1d865689 |
1768 | |
91c60b57 |
1769 | theGlContext->BindProgram (NULL); |
fc73a202 |
1770 | } |
265d4508 |
1771 | |
91c60b57 |
1772 | if (myRaytraceInitStatus != OpenGl_RT_NONE) |
fc73a202 |
1773 | { |
91c60b57 |
1774 | return myRaytraceInitStatus == OpenGl_RT_INIT; |
fc73a202 |
1775 | } |
265d4508 |
1776 | |
fc73a202 |
1777 | const GLfloat aVertices[] = { -1.f, -1.f, 0.f, |
1778 | -1.f, 1.f, 0.f, |
1779 | 1.f, 1.f, 0.f, |
1780 | 1.f, 1.f, 0.f, |
1781 | 1.f, -1.f, 0.f, |
1782 | -1.f, -1.f, 0.f }; |
265d4508 |
1783 | |
91c60b57 |
1784 | myRaytraceScreenQuad.Init (theGlContext, 3, 6, aVertices); |
265d4508 |
1785 | |
91c60b57 |
1786 | myRaytraceInitStatus = OpenGl_RT_INIT; // initialized in normal way |
ca3c13d1 |
1787 | |
fc73a202 |
1788 | return Standard_True; |
1789 | } |
265d4508 |
1790 | |
fc73a202 |
1791 | // ======================================================================= |
189f85a3 |
1792 | // function : nullifyResource |
3a9b5dc8 |
1793 | // purpose : Releases OpenGL resource |
fc73a202 |
1794 | // ======================================================================= |
aa00364d |
1795 | template <class T> |
3a9b5dc8 |
1796 | inline void nullifyResource (const Handle(OpenGl_Context)& theGlContext, Handle(T)& theResource) |
fc73a202 |
1797 | { |
1798 | if (!theResource.IsNull()) |
1799 | { |
91c60b57 |
1800 | theResource->Release (theGlContext.operator->()); |
fc73a202 |
1801 | theResource.Nullify(); |
1802 | } |
1803 | } |
265d4508 |
1804 | |
fc73a202 |
1805 | // ======================================================================= |
189f85a3 |
1806 | // function : releaseRaytraceResources |
fc73a202 |
1807 | // purpose : Releases OpenGL/GLSL shader programs |
1808 | // ======================================================================= |
d877e610 |
1809 | void OpenGl_View::releaseRaytraceResources (const Handle(OpenGl_Context)& theGlContext, const Standard_Boolean theToRebuild) |
fc73a202 |
1810 | { |
d877e610 |
1811 | // release shader resources |
189f85a3 |
1812 | nullifyResource (theGlContext, myRaytraceShader); |
1813 | nullifyResource (theGlContext, myPostFSAAShader); |
265d4508 |
1814 | |
189f85a3 |
1815 | nullifyResource (theGlContext, myRaytraceProgram); |
1816 | nullifyResource (theGlContext, myPostFSAAProgram); |
1817 | nullifyResource (theGlContext, myOutImageProgram); |
265d4508 |
1818 | |
d877e610 |
1819 | if (!theToRebuild) // complete release |
1820 | { |
1821 | myRaytraceFBO1[0]->Release (theGlContext.operator->()); |
1822 | myRaytraceFBO1[1]->Release (theGlContext.operator->()); |
1823 | myRaytraceFBO2[0]->Release (theGlContext.operator->()); |
1824 | myRaytraceFBO2[1]->Release (theGlContext.operator->()); |
1825 | |
1826 | nullifyResource (theGlContext, myRaytraceOutputTexture[0]); |
1827 | nullifyResource (theGlContext, myRaytraceOutputTexture[1]); |
265d4508 |
1828 | |
b27ab03d |
1829 | nullifyResource (theGlContext, myRaytraceTileOffsetsTexture[0]); |
1830 | nullifyResource (theGlContext, myRaytraceTileOffsetsTexture[1]); |
1831 | nullifyResource (theGlContext, myRaytraceVisualErrorTexture[0]); |
1832 | nullifyResource (theGlContext, myRaytraceVisualErrorTexture[1]); |
e084dbbc |
1833 | nullifyResource (theGlContext, myRaytraceTileSamplesTexture[0]); |
1834 | nullifyResource (theGlContext, myRaytraceTileSamplesTexture[1]); |
265d4508 |
1835 | |
d877e610 |
1836 | nullifyResource (theGlContext, mySceneNodeInfoTexture); |
1837 | nullifyResource (theGlContext, mySceneMinPointTexture); |
1838 | nullifyResource (theGlContext, mySceneMaxPointTexture); |
265d4508 |
1839 | |
d877e610 |
1840 | nullifyResource (theGlContext, myGeometryVertexTexture); |
1841 | nullifyResource (theGlContext, myGeometryNormalTexture); |
1842 | nullifyResource (theGlContext, myGeometryTexCrdTexture); |
1843 | nullifyResource (theGlContext, myGeometryTriangTexture); |
1844 | nullifyResource (theGlContext, mySceneTransformTexture); |
47e9c178 |
1845 | |
d877e610 |
1846 | nullifyResource (theGlContext, myRaytraceLightSrcTexture); |
1847 | nullifyResource (theGlContext, myRaytraceMaterialTexture); |
1848 | |
1849 | myRaytraceGeometry.ReleaseResources (theGlContext); |
1850 | |
1851 | if (myRaytraceScreenQuad.IsValid ()) |
1852 | { |
1853 | myRaytraceScreenQuad.Release (theGlContext.operator->()); |
1854 | } |
3a9b5dc8 |
1855 | } |
91c60b57 |
1856 | } |
1857 | |
1858 | // ======================================================================= |
bf02aa7d |
1859 | // function : updateRaytraceBuffers |
1860 | // purpose : Updates auxiliary OpenGL frame buffers. |
91c60b57 |
1861 | // ======================================================================= |
bf02aa7d |
1862 | Standard_Boolean OpenGl_View::updateRaytraceBuffers (const Standard_Integer theSizeX, |
91c60b57 |
1863 | const Standard_Integer theSizeY, |
1864 | const Handle(OpenGl_Context)& theGlContext) |
1865 | { |
6dd6e5c7 |
1866 | // Auxiliary buffers are not used |
bf02aa7d |
1867 | if (!myRaytraceParameters.GlobalIllumination && !myRenderParams.IsAntialiasingEnabled) |
91c60b57 |
1868 | { |
bf02aa7d |
1869 | myRaytraceFBO1[0]->Release (theGlContext.operator->()); |
1870 | myRaytraceFBO2[0]->Release (theGlContext.operator->()); |
1871 | myRaytraceFBO1[1]->Release (theGlContext.operator->()); |
1872 | myRaytraceFBO2[1]->Release (theGlContext.operator->()); |
3a9b5dc8 |
1873 | |
bf02aa7d |
1874 | return Standard_True; |
1875 | } |
1876 | |
4eaaf9d8 |
1877 | if (myRaytraceParameters.AdaptiveScreenSampling) |
6dd6e5c7 |
1878 | { |
66d1cdc6 |
1879 | Graphic3d_Vec2i aMaxViewport = myTileSampler.OffsetTilesViewportMax().cwiseMax (Graphic3d_Vec2i (theSizeX, theSizeY)); |
1880 | myRaytraceFBO1[0]->InitLazy (theGlContext, aMaxViewport.x(), aMaxViewport.y(), GL_RGBA32F, myFboDepthFormat); |
1881 | myRaytraceFBO2[0]->InitLazy (theGlContext, aMaxViewport.x(), aMaxViewport.y(), GL_RGBA32F, myFboDepthFormat); |
4eaaf9d8 |
1882 | if (myRaytraceFBO1[1]->IsValid()) // second FBO not needed |
1883 | { |
1884 | myRaytraceFBO1[1]->Release (theGlContext.operator->()); |
1885 | myRaytraceFBO2[1]->Release (theGlContext.operator->()); |
1886 | } |
bf02aa7d |
1887 | } |
66d1cdc6 |
1888 | |
1889 | for (int aViewIter = 0; aViewIter < 2; ++aViewIter) |
bf02aa7d |
1890 | { |
66d1cdc6 |
1891 | if (myRaytraceTileOffsetsTexture[aViewIter].IsNull()) |
4eaaf9d8 |
1892 | { |
66d1cdc6 |
1893 | myRaytraceOutputTexture[aViewIter] = new OpenGl_Texture(); |
1894 | myRaytraceVisualErrorTexture[aViewIter] = new OpenGl_Texture(); |
e084dbbc |
1895 | myRaytraceTileSamplesTexture[aViewIter] = new OpenGl_Texture(); |
66d1cdc6 |
1896 | myRaytraceTileOffsetsTexture[aViewIter] = new OpenGl_Texture(); |
4eaaf9d8 |
1897 | } |
1898 | |
66d1cdc6 |
1899 | if (aViewIter == 1 |
1900 | && myCamera->ProjectionType() != Graphic3d_Camera::Projection_Stereo) |
4eaaf9d8 |
1901 | { |
1902 | myRaytraceFBO1[1]->Release (theGlContext.operator->()); |
1903 | myRaytraceFBO2[1]->Release (theGlContext.operator->()); |
66d1cdc6 |
1904 | myRaytraceOutputTexture[1]->Release (theGlContext.operator->()); |
1905 | myRaytraceVisualErrorTexture[1]->Release (theGlContext.operator->()); |
1906 | myRaytraceTileOffsetsTexture[1]->Release (theGlContext.operator->()); |
1907 | continue; |
4eaaf9d8 |
1908 | } |
3a9b5dc8 |
1909 | |
66d1cdc6 |
1910 | if (myRaytraceParameters.AdaptiveScreenSampling) |
3a9b5dc8 |
1911 | { |
66d1cdc6 |
1912 | if (myRaytraceOutputTexture[aViewIter]->SizeX() / 3 == theSizeX |
1913 | && myRaytraceOutputTexture[aViewIter]->SizeY() / 2 == theSizeY |
1914 | && myRaytraceVisualErrorTexture[aViewIter]->SizeX() == myTileSampler.NbTilesX() |
1915 | && myRaytraceVisualErrorTexture[aViewIter]->SizeY() == myTileSampler.NbTilesY()) |
1916 | { |
e084dbbc |
1917 | if (myRaytraceParameters.AdaptiveScreenSamplingAtomic) |
1918 | { |
1919 | continue; // offsets texture is dynamically resized |
1920 | } |
1921 | else if (myRaytraceTileSamplesTexture[aViewIter]->SizeX() == myTileSampler.NbTilesX() |
1922 | && myRaytraceTileSamplesTexture[aViewIter]->SizeY() == myTileSampler.NbTilesY()) |
1923 | { |
1924 | continue; |
1925 | } |
66d1cdc6 |
1926 | } |
b27ab03d |
1927 | |
66d1cdc6 |
1928 | myAccumFrames = 0; |
b27ab03d |
1929 | |
66d1cdc6 |
1930 | // Due to limitations of OpenGL image load-store extension |
1931 | // atomic operations are supported only for single-channel |
1932 | // images, so we define GL_R32F image. It is used as array |
1933 | // of 6D floating point vectors: |
1934 | // 0 - R color channel |
1935 | // 1 - G color channel |
1936 | // 2 - B color channel |
1937 | // 3 - hit time transformed into OpenGL NDC space |
1938 | // 4 - luminance accumulated for odd samples only |
1939 | myRaytraceOutputTexture[aViewIter]->InitRectangle (theGlContext, theSizeX * 3, theSizeY * 2, OpenGl_TextureFormat::Create<GLfloat, 1>()); |
1940 | |
1941 | // workaround for some NVIDIA drivers |
1942 | myRaytraceVisualErrorTexture[aViewIter]->Release (theGlContext.operator->()); |
e084dbbc |
1943 | myRaytraceTileSamplesTexture[aViewIter]->Release (theGlContext.operator->()); |
66d1cdc6 |
1944 | myRaytraceVisualErrorTexture[aViewIter]->Init (theGlContext, GL_R32I, GL_RED_INTEGER, GL_INT, |
1945 | myTileSampler.NbTilesX(), myTileSampler.NbTilesY(), Graphic3d_TOT_2D); |
e084dbbc |
1946 | if (!myRaytraceParameters.AdaptiveScreenSamplingAtomic) |
1947 | { |
1948 | myRaytraceTileSamplesTexture[aViewIter]->Init (theGlContext, GL_R32I, GL_RED_INTEGER, GL_INT, |
1949 | myTileSampler.NbTilesX(), myTileSampler.NbTilesY(), Graphic3d_TOT_2D); |
1950 | } |
66d1cdc6 |
1951 | } |
1952 | else // non-adaptive mode |
1953 | { |
1954 | if (myRaytraceFBO1[aViewIter]->GetSizeX() != theSizeX |
1955 | || myRaytraceFBO1[aViewIter]->GetSizeY() != theSizeY) |
1956 | { |
1957 | myAccumFrames = 0; // accumulation should be restarted |
1958 | } |
b27ab03d |
1959 | |
66d1cdc6 |
1960 | myRaytraceFBO1[aViewIter]->InitLazy (theGlContext, theSizeX, theSizeY, GL_RGBA32F, myFboDepthFormat); |
1961 | myRaytraceFBO2[aViewIter]->InitLazy (theGlContext, theSizeX, theSizeY, GL_RGBA32F, myFboDepthFormat); |
3a9b5dc8 |
1962 | } |
1963 | } |
91c60b57 |
1964 | return Standard_True; |
1965 | } |
1966 | |
1967 | // ======================================================================= |
189f85a3 |
1968 | // function : updateCamera |
91c60b57 |
1969 | // purpose : Generates viewing rays for corners of screen quad |
1970 | // ======================================================================= |
1971 | void OpenGl_View::updateCamera (const OpenGl_Mat4& theOrientation, |
1972 | const OpenGl_Mat4& theViewMapping, |
1973 | OpenGl_Vec3* theOrigins, |
1974 | OpenGl_Vec3* theDirects, |
3a9b5dc8 |
1975 | OpenGl_Mat4& theViewPr, |
91c60b57 |
1976 | OpenGl_Mat4& theUnview) |
1977 | { |
1d865689 |
1978 | // compute view-projection matrix |
3a9b5dc8 |
1979 | theViewPr = theViewMapping * theOrientation; |
1d865689 |
1980 | |
1981 | // compute inverse view-projection matrix |
3a9b5dc8 |
1982 | theViewPr.Inverted (theUnview); |
91c60b57 |
1983 | |
1984 | Standard_Integer aOriginIndex = 0; |
1985 | Standard_Integer aDirectIndex = 0; |
1986 | |
1987 | for (Standard_Integer aY = -1; aY <= 1; aY += 2) |
1988 | { |
1989 | for (Standard_Integer aX = -1; aX <= 1; aX += 2) |
1990 | { |
1991 | OpenGl_Vec4 aOrigin (GLfloat(aX), |
1992 | GLfloat(aY), |
b27ab03d |
1993 | -1.0f, |
91c60b57 |
1994 | 1.0f); |
1995 | |
1996 | aOrigin = theUnview * aOrigin; |
1997 | |
1998 | aOrigin.x() = aOrigin.x() / aOrigin.w(); |
1999 | aOrigin.y() = aOrigin.y() / aOrigin.w(); |
2000 | aOrigin.z() = aOrigin.z() / aOrigin.w(); |
2001 | |
2002 | OpenGl_Vec4 aDirect (GLfloat(aX), |
2003 | GLfloat(aY), |
2004 | 1.0f, |
2005 | 1.0f); |
2006 | |
2007 | aDirect = theUnview * aDirect; |
2008 | |
2009 | aDirect.x() = aDirect.x() / aDirect.w(); |
2010 | aDirect.y() = aDirect.y() / aDirect.w(); |
2011 | aDirect.z() = aDirect.z() / aDirect.w(); |
2012 | |
2013 | aDirect = aDirect - aOrigin; |
2014 | |
91c60b57 |
2015 | theOrigins[aOriginIndex++] = OpenGl_Vec3 (static_cast<GLfloat> (aOrigin.x()), |
2016 | static_cast<GLfloat> (aOrigin.y()), |
2017 | static_cast<GLfloat> (aOrigin.z())); |
2018 | |
b0dc79bc |
2019 | theDirects[aDirectIndex++] = OpenGl_Vec3 (static_cast<GLfloat> (aDirect.x()), |
2020 | static_cast<GLfloat> (aDirect.y()), |
2021 | static_cast<GLfloat> (aDirect.z())); |
91c60b57 |
2022 | } |
2023 | } |
fc73a202 |
2024 | } |
265d4508 |
2025 | |
b27ab03d |
2026 | // ======================================================================= |
2027 | // function : updatePerspCameraPT |
2028 | // purpose : Generates viewing rays (path tracing, perspective camera) |
2029 | // ======================================================================= |
2030 | void OpenGl_View::updatePerspCameraPT (const OpenGl_Mat4& theOrientation, |
2031 | const OpenGl_Mat4& theViewMapping, |
2032 | Graphic3d_Camera::Projection theProjection, |
2033 | OpenGl_Mat4& theViewPr, |
2034 | OpenGl_Mat4& theUnview, |
2035 | const int theWinSizeX, |
2036 | const int theWinSizeY) |
2037 | { |
2038 | // compute view-projection matrix |
2039 | theViewPr = theViewMapping * theOrientation; |
2040 | |
2041 | // compute inverse view-projection matrix |
2042 | theViewPr.Inverted(theUnview); |
2043 | |
2044 | // get camera stereo params |
2045 | float anIOD = myCamera->GetIODType() == Graphic3d_Camera::IODType_Relative |
2046 | ? static_cast<float> (myCamera->IOD() * myCamera->Distance()) |
2047 | : static_cast<float> (myCamera->IOD()); |
2048 | |
2049 | float aZFocus = myCamera->ZFocusType() == Graphic3d_Camera::FocusType_Relative |
2050 | ? static_cast<float> (myCamera->ZFocus() * myCamera->Distance()) |
2051 | : static_cast<float> (myCamera->ZFocus()); |
2052 | |
2053 | // get camera view vectors |
2054 | const gp_Pnt anOrig = myCamera->Eye(); |
2055 | |
2056 | myEyeOrig = OpenGl_Vec3 (static_cast<float> (anOrig.X()), |
2057 | static_cast<float> (anOrig.Y()), |
2058 | static_cast<float> (anOrig.Z())); |
2059 | |
2060 | const gp_Dir aView = myCamera->Direction(); |
2061 | |
2062 | OpenGl_Vec3 anEyeViewMono = OpenGl_Vec3 (static_cast<float> (aView.X()), |
2063 | static_cast<float> (aView.Y()), |
2064 | static_cast<float> (aView.Z())); |
2065 | |
2066 | const gp_Dir anUp = myCamera->Up(); |
2067 | |
2068 | myEyeVert = OpenGl_Vec3 (static_cast<float> (anUp.X()), |
2069 | static_cast<float> (anUp.Y()), |
2070 | static_cast<float> (anUp.Z())); |
2071 | |
2072 | myEyeSide = OpenGl_Vec3::Cross (anEyeViewMono, myEyeVert); |
2073 | |
2074 | const double aScaleY = tan (myCamera->FOVy() / 360 * M_PI); |
2075 | const double aScaleX = theWinSizeX * aScaleY / theWinSizeY; |
2076 | |
2077 | myEyeSize = OpenGl_Vec2 (static_cast<float> (aScaleX), |
2078 | static_cast<float> (aScaleY)); |
2079 | |
2080 | if (theProjection == Graphic3d_Camera::Projection_Perspective) |
2081 | { |
2082 | myEyeView = anEyeViewMono; |
2083 | } |
2084 | else // stereo camera |
2085 | { |
2086 | // compute z-focus point |
2087 | OpenGl_Vec3 aZFocusPoint = myEyeOrig + anEyeViewMono * aZFocus; |
2088 | |
2089 | // compute stereo camera shift |
2090 | float aDx = theProjection == Graphic3d_Camera::Projection_MonoRightEye ? 0.5f * anIOD : -0.5f * anIOD; |
2091 | myEyeOrig += myEyeSide.Normalized() * aDx; |
2092 | |
2093 | // estimate new camera direction vector and correct its length |
2094 | myEyeView = (aZFocusPoint - myEyeOrig).Normalized(); |
2095 | myEyeView *= 1.f / anEyeViewMono.Dot (myEyeView); |
2096 | } |
2097 | } |
2098 | |
fc73a202 |
2099 | // ======================================================================= |
189f85a3 |
2100 | // function : uploadRaytraceData |
fc73a202 |
2101 | // purpose : Uploads ray-trace data to the GPU |
2102 | // ======================================================================= |
91c60b57 |
2103 | Standard_Boolean OpenGl_View::uploadRaytraceData (const Handle(OpenGl_Context)& theGlContext) |
fc73a202 |
2104 | { |
91c60b57 |
2105 | if (!theGlContext->IsGlGreaterEqual (3, 1)) |
fc73a202 |
2106 | { |
265d4508 |
2107 | #ifdef RAY_TRACE_PRINT_INFO |
fc73a202 |
2108 | std::cout << "Error: OpenGL version is less than 3.1" << std::endl; |
265d4508 |
2109 | #endif |
fc73a202 |
2110 | return Standard_False; |
e276548b |
2111 | } |
2112 | |
189f85a3 |
2113 | myAccumFrames = 0; // accumulation should be restarted |
2114 | |
25ef750e |
2115 | ///////////////////////////////////////////////////////////////////////////// |
2116 | // Prepare OpenGL textures |
2117 | |
91c60b57 |
2118 | if (theGlContext->arbTexBindless != NULL) |
25ef750e |
2119 | { |
2120 | // If OpenGL driver supports bindless textures we need |
2121 | // to get unique 64- bit handles for using on the GPU |
91c60b57 |
2122 | if (!myRaytraceGeometry.UpdateTextureHandles (theGlContext)) |
25ef750e |
2123 | { |
2124 | #ifdef RAY_TRACE_PRINT_INFO |
2125 | std::cout << "Error: Failed to get OpenGL texture handles" << std::endl; |
2126 | #endif |
2127 | return Standard_False; |
2128 | } |
2129 | } |
2130 | |
265d4508 |
2131 | ///////////////////////////////////////////////////////////////////////////// |
e2da917a |
2132 | // Create OpenGL BVH buffers |
265d4508 |
2133 | |
3a9b5dc8 |
2134 | if (mySceneNodeInfoTexture.IsNull()) // create scene BVH buffers |
e276548b |
2135 | { |
e2da917a |
2136 | mySceneNodeInfoTexture = new OpenGl_TextureBufferArb; |
2137 | mySceneMinPointTexture = new OpenGl_TextureBufferArb; |
2138 | mySceneMaxPointTexture = new OpenGl_TextureBufferArb; |
84c71f29 |
2139 | mySceneTransformTexture = new OpenGl_TextureBufferArb; |
265d4508 |
2140 | |
91c60b57 |
2141 | if (!mySceneNodeInfoTexture->Create (theGlContext) |
2142 | || !mySceneMinPointTexture->Create (theGlContext) |
2143 | || !mySceneMaxPointTexture->Create (theGlContext) |
2144 | || !mySceneTransformTexture->Create (theGlContext)) |
e276548b |
2145 | { |
fc73a202 |
2146 | #ifdef RAY_TRACE_PRINT_INFO |
e2da917a |
2147 | std::cout << "Error: Failed to create scene BVH buffers" << std::endl; |
fc73a202 |
2148 | #endif |
2149 | return Standard_False; |
2150 | } |
2151 | } |
5322131b |
2152 | |
3a9b5dc8 |
2153 | if (myGeometryVertexTexture.IsNull()) // create geometry buffers |
265d4508 |
2154 | { |
fc73a202 |
2155 | myGeometryVertexTexture = new OpenGl_TextureBufferArb; |
2156 | myGeometryNormalTexture = new OpenGl_TextureBufferArb; |
25ef750e |
2157 | myGeometryTexCrdTexture = new OpenGl_TextureBufferArb; |
fc73a202 |
2158 | myGeometryTriangTexture = new OpenGl_TextureBufferArb; |
e276548b |
2159 | |
91c60b57 |
2160 | if (!myGeometryVertexTexture->Create (theGlContext) |
2161 | || !myGeometryNormalTexture->Create (theGlContext) |
2162 | || !myGeometryTexCrdTexture->Create (theGlContext) |
2163 | || !myGeometryTriangTexture->Create (theGlContext)) |
fc73a202 |
2164 | { |
2165 | #ifdef RAY_TRACE_PRINT_INFO |
2166 | std::cout << "Error: Failed to create buffers for triangulation data" << std::endl; |
2167 | #endif |
2168 | return Standard_False; |
2169 | } |
265d4508 |
2170 | } |
5322131b |
2171 | |
e2da917a |
2172 | if (myRaytraceMaterialTexture.IsNull()) // create material buffer |
fc73a202 |
2173 | { |
2174 | myRaytraceMaterialTexture = new OpenGl_TextureBufferArb; |
e276548b |
2175 | |
91c60b57 |
2176 | if (!myRaytraceMaterialTexture->Create (theGlContext)) |
fc73a202 |
2177 | { |
2178 | #ifdef RAY_TRACE_PRINT_INFO |
2179 | std::cout << "Error: Failed to create buffers for material data" << std::endl; |
e276548b |
2180 | #endif |
fc73a202 |
2181 | return Standard_False; |
2182 | } |
2183 | } |
e2da917a |
2184 | |
84c71f29 |
2185 | ///////////////////////////////////////////////////////////////////////////// |
2186 | // Write transform buffer |
2187 | |
2188 | BVH_Mat4f* aNodeTransforms = new BVH_Mat4f[myRaytraceGeometry.Size()]; |
84c71f29 |
2189 | |
e2da917a |
2190 | bool aResult = true; |
2191 | |
84c71f29 |
2192 | for (Standard_Integer anElemIndex = 0; anElemIndex < myRaytraceGeometry.Size(); ++anElemIndex) |
2193 | { |
2194 | OpenGl_TriangleSet* aTriangleSet = dynamic_cast<OpenGl_TriangleSet*> ( |
2195 | myRaytraceGeometry.Objects().ChangeValue (anElemIndex).operator->()); |
2196 | |
f5b72419 |
2197 | const BVH_Transform<Standard_ShortReal, 4>* aTransform = dynamic_cast<const BVH_Transform<Standard_ShortReal, 4>* > (aTriangleSet->Properties().get()); |
84c71f29 |
2198 | Standard_ASSERT_RETURN (aTransform != NULL, |
2199 | "OpenGl_TriangleSet does not contain transform", Standard_False); |
2200 | |
2201 | aNodeTransforms[anElemIndex] = aTransform->Inversed(); |
84c71f29 |
2202 | } |
2203 | |
91c60b57 |
2204 | aResult &= mySceneTransformTexture->Init (theGlContext, 4, |
84c71f29 |
2205 | myRaytraceGeometry.Size() * 4, reinterpret_cast<const GLfloat*> (aNodeTransforms)); |
2206 | |
25ef750e |
2207 | delete [] aNodeTransforms; |
84c71f29 |
2208 | |
2209 | ///////////////////////////////////////////////////////////////////////////// |
bc8c79bb |
2210 | // Write geometry and bottom-level BVH buffers |
84c71f29 |
2211 | |
fc73a202 |
2212 | Standard_Size aTotalVerticesNb = 0; |
2213 | Standard_Size aTotalElementsNb = 0; |
2214 | Standard_Size aTotalBVHNodesNb = 0; |
265d4508 |
2215 | |
fc73a202 |
2216 | for (Standard_Integer anElemIndex = 0; anElemIndex < myRaytraceGeometry.Size(); ++anElemIndex) |
2217 | { |
2218 | OpenGl_TriangleSet* aTriangleSet = dynamic_cast<OpenGl_TriangleSet*> ( |
2219 | myRaytraceGeometry.Objects().ChangeValue (anElemIndex).operator->()); |
265d4508 |
2220 | |
fc73a202 |
2221 | Standard_ASSERT_RETURN (aTriangleSet != NULL, |
2222 | "Error: Failed to get triangulation of OpenGL element", Standard_False); |
2223 | |
2224 | aTotalVerticesNb += aTriangleSet->Vertices.size(); |
2225 | aTotalElementsNb += aTriangleSet->Elements.size(); |
e276548b |
2226 | |
f2474958 |
2227 | Standard_ASSERT_RETURN (!aTriangleSet->QuadBVH().IsNull(), |
fc73a202 |
2228 | "Error: Failed to get bottom-level BVH of OpenGL element", Standard_False); |
265d4508 |
2229 | |
f2474958 |
2230 | aTotalBVHNodesNb += aTriangleSet->QuadBVH()->NodeInfoBuffer().size(); |
fc73a202 |
2231 | } |
e276548b |
2232 | |
f2474958 |
2233 | aTotalBVHNodesNb += myRaytraceGeometry.QuadBVH()->NodeInfoBuffer().size(); |
e2da917a |
2234 | |
fc73a202 |
2235 | if (aTotalBVHNodesNb != 0) |
e276548b |
2236 | { |
e2da917a |
2237 | aResult &= mySceneNodeInfoTexture->Init ( |
91c60b57 |
2238 | theGlContext, 4, GLsizei (aTotalBVHNodesNb), static_cast<const GLuint*> (NULL)); |
e2da917a |
2239 | aResult &= mySceneMinPointTexture->Init ( |
91c60b57 |
2240 | theGlContext, 3, GLsizei (aTotalBVHNodesNb), static_cast<const GLfloat*> (NULL)); |
e2da917a |
2241 | aResult &= mySceneMaxPointTexture->Init ( |
91c60b57 |
2242 | theGlContext, 3, GLsizei (aTotalBVHNodesNb), static_cast<const GLfloat*> (NULL)); |
fc73a202 |
2243 | } |
265d4508 |
2244 | |
fc73a202 |
2245 | if (!aResult) |
2246 | { |
2247 | #ifdef RAY_TRACE_PRINT_INFO |
2248 | std::cout << "Error: Failed to upload buffers for bottom-level scene BVH" << std::endl; |
2249 | #endif |
2250 | return Standard_False; |
2251 | } |
e276548b |
2252 | |
fc73a202 |
2253 | if (aTotalElementsNb != 0) |
2254 | { |
25ef750e |
2255 | aResult &= myGeometryTriangTexture->Init ( |
91c60b57 |
2256 | theGlContext, 4, GLsizei (aTotalElementsNb), static_cast<const GLuint*> (NULL)); |
fc73a202 |
2257 | } |
265d4508 |
2258 | |
fc73a202 |
2259 | if (aTotalVerticesNb != 0) |
2260 | { |
25ef750e |
2261 | aResult &= myGeometryVertexTexture->Init ( |
91c60b57 |
2262 | theGlContext, 3, GLsizei (aTotalVerticesNb), static_cast<const GLfloat*> (NULL)); |
25ef750e |
2263 | aResult &= myGeometryNormalTexture->Init ( |
91c60b57 |
2264 | theGlContext, 3, GLsizei (aTotalVerticesNb), static_cast<const GLfloat*> (NULL)); |
25ef750e |
2265 | aResult &= myGeometryTexCrdTexture->Init ( |
91c60b57 |
2266 | theGlContext, 2, GLsizei (aTotalVerticesNb), static_cast<const GLfloat*> (NULL)); |
fc73a202 |
2267 | } |
265d4508 |
2268 | |
fc73a202 |
2269 | if (!aResult) |
2270 | { |
2271 | #ifdef RAY_TRACE_PRINT_INFO |
2272 | std::cout << "Error: Failed to upload buffers for scene geometry" << std::endl; |
2273 | #endif |
2274 | return Standard_False; |
2275 | } |
265d4508 |
2276 | |
f2474958 |
2277 | const QuadBvhHandle& aBVH = myRaytraceGeometry.QuadBVH(); |
91c60b57 |
2278 | |
2279 | if (aBVH->Length() > 0) |
1e99558f |
2280 | { |
91c60b57 |
2281 | aResult &= mySceneNodeInfoTexture->SubData (theGlContext, 0, aBVH->Length(), |
1e99558f |
2282 | reinterpret_cast<const GLuint*> (&aBVH->NodeInfoBuffer().front())); |
91c60b57 |
2283 | aResult &= mySceneMinPointTexture->SubData (theGlContext, 0, aBVH->Length(), |
1e99558f |
2284 | reinterpret_cast<const GLfloat*> (&aBVH->MinPointBuffer().front())); |
91c60b57 |
2285 | aResult &= mySceneMaxPointTexture->SubData (theGlContext, 0, aBVH->Length(), |
1e99558f |
2286 | reinterpret_cast<const GLfloat*> (&aBVH->MaxPointBuffer().front())); |
2287 | } |
e2da917a |
2288 | |
fc73a202 |
2289 | for (Standard_Integer aNodeIdx = 0; aNodeIdx < aBVH->Length(); ++aNodeIdx) |
2290 | { |
2291 | if (!aBVH->IsOuter (aNodeIdx)) |
2292 | continue; |
265d4508 |
2293 | |
fc73a202 |
2294 | OpenGl_TriangleSet* aTriangleSet = myRaytraceGeometry.TriangleSet (aNodeIdx); |
e276548b |
2295 | |
fc73a202 |
2296 | Standard_ASSERT_RETURN (aTriangleSet != NULL, |
2297 | "Error: Failed to get triangulation of OpenGL element", Standard_False); |
e276548b |
2298 | |
e2da917a |
2299 | Standard_Integer aBVHOffset = myRaytraceGeometry.AccelerationOffset (aNodeIdx); |
e276548b |
2300 | |
fc73a202 |
2301 | Standard_ASSERT_RETURN (aBVHOffset != OpenGl_RaytraceGeometry::INVALID_OFFSET, |
2302 | "Error: Failed to get offset for bottom-level BVH", Standard_False); |
e276548b |
2303 | |
f2474958 |
2304 | const Standard_Integer aBvhBuffersSize = aTriangleSet->QuadBVH()->Length(); |
265d4508 |
2305 | |
e2da917a |
2306 | if (aBvhBuffersSize != 0) |
fc73a202 |
2307 | { |
91c60b57 |
2308 | aResult &= mySceneNodeInfoTexture->SubData (theGlContext, aBVHOffset, aBvhBuffersSize, |
f2474958 |
2309 | reinterpret_cast<const GLuint*> (&aTriangleSet->QuadBVH()->NodeInfoBuffer().front())); |
91c60b57 |
2310 | aResult &= mySceneMinPointTexture->SubData (theGlContext, aBVHOffset, aBvhBuffersSize, |
f2474958 |
2311 | reinterpret_cast<const GLfloat*> (&aTriangleSet->QuadBVH()->MinPointBuffer().front())); |
91c60b57 |
2312 | aResult &= mySceneMaxPointTexture->SubData (theGlContext, aBVHOffset, aBvhBuffersSize, |
f2474958 |
2313 | reinterpret_cast<const GLfloat*> (&aTriangleSet->QuadBVH()->MaxPointBuffer().front())); |
91c60b57 |
2314 | |
fc73a202 |
2315 | if (!aResult) |
e276548b |
2316 | { |
fc73a202 |
2317 | #ifdef RAY_TRACE_PRINT_INFO |
2318 | std::cout << "Error: Failed to upload buffers for bottom-level scene BVHs" << std::endl; |
2319 | #endif |
e276548b |
2320 | return Standard_False; |
2321 | } |
2322 | } |
2323 | |
fc73a202 |
2324 | const Standard_Integer aVerticesOffset = myRaytraceGeometry.VerticesOffset (aNodeIdx); |
265d4508 |
2325 | |
fc73a202 |
2326 | Standard_ASSERT_RETURN (aVerticesOffset != OpenGl_RaytraceGeometry::INVALID_OFFSET, |
2327 | "Error: Failed to get offset for triangulation vertices of OpenGL element", Standard_False); |
265d4508 |
2328 | |
fc73a202 |
2329 | if (!aTriangleSet->Vertices.empty()) |
2330 | { |
91c60b57 |
2331 | aResult &= myGeometryNormalTexture->SubData (theGlContext, aVerticesOffset, |
2332 | GLsizei (aTriangleSet->Normals.size()), reinterpret_cast<const GLfloat*> (&aTriangleSet->Normals.front())); |
2333 | aResult &= myGeometryTexCrdTexture->SubData (theGlContext, aVerticesOffset, |
2334 | GLsizei (aTriangleSet->TexCrds.size()), reinterpret_cast<const GLfloat*> (&aTriangleSet->TexCrds.front())); |
2335 | aResult &= myGeometryVertexTexture->SubData (theGlContext, aVerticesOffset, |
2336 | GLsizei (aTriangleSet->Vertices.size()), reinterpret_cast<const GLfloat*> (&aTriangleSet->Vertices.front())); |
fc73a202 |
2337 | } |
e276548b |
2338 | |
fc73a202 |
2339 | const Standard_Integer anElementsOffset = myRaytraceGeometry.ElementsOffset (aNodeIdx); |
265d4508 |
2340 | |
fc73a202 |
2341 | Standard_ASSERT_RETURN (anElementsOffset != OpenGl_RaytraceGeometry::INVALID_OFFSET, |
2342 | "Error: Failed to get offset for triangulation elements of OpenGL element", Standard_False); |
e276548b |
2343 | |
fc73a202 |
2344 | if (!aTriangleSet->Elements.empty()) |
e276548b |
2345 | { |
91c60b57 |
2346 | aResult &= myGeometryTriangTexture->SubData (theGlContext, anElementsOffset, GLsizei (aTriangleSet->Elements.size()), |
5cff985a |
2347 | reinterpret_cast<const GLuint*> (&aTriangleSet->Elements.front())); |
e276548b |
2348 | } |
265d4508 |
2349 | |
fc73a202 |
2350 | if (!aResult) |
2351 | { |
2352 | #ifdef RAY_TRACE_PRINT_INFO |
2353 | std::cout << "Error: Failed to upload triangulation buffers for OpenGL element" << std::endl; |
e276548b |
2354 | #endif |
fc73a202 |
2355 | return Standard_False; |
2356 | } |
e276548b |
2357 | } |
e276548b |
2358 | |
25ef750e |
2359 | ///////////////////////////////////////////////////////////////////////////// |
2360 | // Write material buffer |
2361 | |
fc73a202 |
2362 | if (myRaytraceGeometry.Materials.size() != 0) |
2363 | { |
91c60b57 |
2364 | aResult &= myRaytraceMaterialTexture->Init (theGlContext, 4, |
05aa616d |
2365 | GLsizei (myRaytraceGeometry.Materials.size() * 19), myRaytraceGeometry.Materials.front().Packed()); |
25ef750e |
2366 | |
fc73a202 |
2367 | if (!aResult) |
2368 | { |
2369 | #ifdef RAY_TRACE_PRINT_INFO |
2370 | std::cout << "Error: Failed to upload material buffer" << std::endl; |
2371 | #endif |
2372 | return Standard_False; |
2373 | } |
2374 | } |
e276548b |
2375 | |
fc73a202 |
2376 | myIsRaytraceDataValid = myRaytraceGeometry.Objects().Size() != 0; |
e276548b |
2377 | |
fc73a202 |
2378 | #ifdef RAY_TRACE_PRINT_INFO |
e276548b |
2379 | |
f2474958 |
2380 | Standard_ShortReal aMemTrgUsed = 0.f; |
2381 | Standard_ShortReal aMemBvhUsed = 0.f; |
e276548b |
2382 | |
fc73a202 |
2383 | for (Standard_Integer anElemIdx = 0; anElemIdx < myRaytraceGeometry.Size(); ++anElemIdx) |
2384 | { |
f2474958 |
2385 | OpenGl_TriangleSet* aTriangleSet = dynamic_cast<OpenGl_TriangleSet*> (myRaytraceGeometry.Objects()(anElemIdx).get()); |
e276548b |
2386 | |
f2474958 |
2387 | aMemTrgUsed += static_cast<Standard_ShortReal> ( |
25ef750e |
2388 | aTriangleSet->Vertices.size() * sizeof (BVH_Vec3f)); |
f2474958 |
2389 | aMemTrgUsed += static_cast<Standard_ShortReal> ( |
25ef750e |
2390 | aTriangleSet->Normals.size() * sizeof (BVH_Vec3f)); |
f2474958 |
2391 | aMemTrgUsed += static_cast<Standard_ShortReal> ( |
25ef750e |
2392 | aTriangleSet->TexCrds.size() * sizeof (BVH_Vec2f)); |
f2474958 |
2393 | aMemTrgUsed += static_cast<Standard_ShortReal> ( |
fc73a202 |
2394 | aTriangleSet->Elements.size() * sizeof (BVH_Vec4i)); |
e276548b |
2395 | |
f2474958 |
2396 | aMemBvhUsed += static_cast<Standard_ShortReal> ( |
2397 | aTriangleSet->QuadBVH()->NodeInfoBuffer().size() * sizeof (BVH_Vec4i)); |
2398 | aMemBvhUsed += static_cast<Standard_ShortReal> ( |
2399 | aTriangleSet->QuadBVH()->MinPointBuffer().size() * sizeof (BVH_Vec3f)); |
2400 | aMemBvhUsed += static_cast<Standard_ShortReal> ( |
2401 | aTriangleSet->QuadBVH()->MaxPointBuffer().size() * sizeof (BVH_Vec3f)); |
fc73a202 |
2402 | } |
e276548b |
2403 | |
f2474958 |
2404 | aMemBvhUsed += static_cast<Standard_ShortReal> ( |
2405 | myRaytraceGeometry.QuadBVH()->NodeInfoBuffer().size() * sizeof (BVH_Vec4i)); |
2406 | aMemBvhUsed += static_cast<Standard_ShortReal> ( |
2407 | myRaytraceGeometry.QuadBVH()->MinPointBuffer().size() * sizeof (BVH_Vec3f)); |
2408 | aMemBvhUsed += static_cast<Standard_ShortReal> ( |
2409 | myRaytraceGeometry.QuadBVH()->MaxPointBuffer().size() * sizeof (BVH_Vec3f)); |
e276548b |
2410 | |
f2474958 |
2411 | std::cout << "GPU Memory Used (Mb):\n" |
2412 | << "\tFor mesh: " << aMemTrgUsed / 1048576 << "\n" |
2413 | << "\tFor BVHs: " << aMemBvhUsed / 1048576 << "\n"; |
e276548b |
2414 | |
fc73a202 |
2415 | #endif |
e276548b |
2416 | |
fc73a202 |
2417 | return aResult; |
2418 | } |
e276548b |
2419 | |
fc73a202 |
2420 | // ======================================================================= |
189f85a3 |
2421 | // function : updateRaytraceLightSources |
91c60b57 |
2422 | // purpose : Updates 3D scene light sources for ray-tracing |
fc73a202 |
2423 | // ======================================================================= |
91c60b57 |
2424 | Standard_Boolean OpenGl_View::updateRaytraceLightSources (const OpenGl_Mat4& theInvModelView, const Handle(OpenGl_Context)& theGlContext) |
fc73a202 |
2425 | { |
992ed6b3 |
2426 | std::vector<Handle(Graphic3d_CLight)> aLightSources; |
2427 | myRaytraceGeometry.Ambient = BVH_Vec4f (0.f, 0.f, 0.f, 0.f); |
dc89236f |
2428 | if (myShadingModel != Graphic3d_TOSM_UNLIT |
992ed6b3 |
2429 | && !myLights.IsNull()) |
6e728f3b |
2430 | { |
992ed6b3 |
2431 | const Graphic3d_Vec4& anAmbient = myLights->AmbientColor(); |
2432 | myRaytraceGeometry.Ambient = BVH_Vec4f (anAmbient.r(), anAmbient.g(), anAmbient.b(), 0.0f); |
91c60b57 |
2433 | |
6e728f3b |
2434 | // move positional light sources at the front of the list |
992ed6b3 |
2435 | aLightSources.reserve (myLights->Extent()); |
2436 | for (Graphic3d_LightSet::Iterator aLightIter (myLights, Graphic3d_LightSet::IterationFilter_ExcludeDisabledAndAmbient); |
2437 | aLightIter.More(); aLightIter.Next()) |
2438 | { |
2439 | const Graphic3d_CLight& aLight = *aLightIter.Value(); |
2440 | if (aLight.Type() != Graphic3d_TOLS_DIRECTIONAL) |
2441 | { |
2442 | aLightSources.push_back (aLightIter.Value()); |
2443 | } |
2444 | } |
2445 | |
2446 | for (Graphic3d_LightSet::Iterator aLightIter (myLights, Graphic3d_LightSet::IterationFilter_ExcludeDisabledAndAmbient); |
2447 | aLightIter.More(); aLightIter.Next()) |
2448 | { |
2449 | if (aLightIter.Value()->Type() == Graphic3d_TOLS_DIRECTIONAL) |
2450 | { |
2451 | aLightSources.push_back (aLightIter.Value()); |
2452 | } |
2453 | } |
6e728f3b |
2454 | } |
2455 | |
2456 | // get number of 'real' (not ambient) light sources |
992ed6b3 |
2457 | const size_t aNbLights = aLightSources.size(); |
6e728f3b |
2458 | Standard_Boolean wasUpdated = myRaytraceGeometry.Sources.size () != aNbLights; |
6e728f3b |
2459 | if (wasUpdated) |
2460 | { |
2461 | myRaytraceGeometry.Sources.resize (aNbLights); |
2462 | } |
2463 | |
6e728f3b |
2464 | for (size_t aLightIdx = 0, aRealIdx = 0; aLightIdx < aLightSources.size(); ++aLightIdx) |
91c60b57 |
2465 | { |
992ed6b3 |
2466 | const Graphic3d_CLight& aLight = *aLightSources[aLightIdx]; |
2467 | const Graphic3d_Vec4& aLightColor = aLight.PackedColor(); |
2468 | BVH_Vec4f aEmission (aLightColor.r() * aLight.Intensity(), |
2469 | aLightColor.g() * aLight.Intensity(), |
2470 | aLightColor.b() * aLight.Intensity(), |
6e728f3b |
2471 | 1.0f); |
91c60b57 |
2472 | |
992ed6b3 |
2473 | BVH_Vec4f aPosition (-aLight.PackedDirection().x(), |
2474 | -aLight.PackedDirection().y(), |
2475 | -aLight.PackedDirection().z(), |
91c60b57 |
2476 | 0.0f); |
2477 | |
992ed6b3 |
2478 | if (aLight.Type() != Graphic3d_TOLS_DIRECTIONAL) |
91c60b57 |
2479 | { |
992ed6b3 |
2480 | aPosition = BVH_Vec4f (static_cast<float>(aLight.Position().X()), |
2481 | static_cast<float>(aLight.Position().Y()), |
2482 | static_cast<float>(aLight.Position().Z()), |
91c60b57 |
2483 | 1.0f); |
189f85a3 |
2484 | |
6e728f3b |
2485 | // store smoothing radius in W-component |
992ed6b3 |
2486 | aEmission.w() = Max (aLight.Smoothness(), 0.f); |
189f85a3 |
2487 | } |
2488 | else |
2489 | { |
6e728f3b |
2490 | // store cosine of smoothing angle in W-component |
992ed6b3 |
2491 | aEmission.w() = cosf (Min (Max (aLight.Smoothness(), 0.f), static_cast<Standard_ShortReal> (M_PI / 2.0))); |
91c60b57 |
2492 | } |
2493 | |
992ed6b3 |
2494 | if (aLight.IsHeadlight()) |
91c60b57 |
2495 | { |
2496 | aPosition = theInvModelView * aPosition; |
2497 | } |
2498 | |
6e728f3b |
2499 | for (int aK = 0; aK < 4; ++aK) |
2500 | { |
2501 | wasUpdated |= (aEmission[aK] != myRaytraceGeometry.Sources[aRealIdx].Emission[aK]) |
2502 | || (aPosition[aK] != myRaytraceGeometry.Sources[aRealIdx].Position[aK]); |
2503 | } |
2504 | |
2505 | if (wasUpdated) |
2506 | { |
2507 | myRaytraceGeometry.Sources[aRealIdx] = OpenGl_RaytraceLight (aEmission, aPosition); |
2508 | } |
2509 | |
2510 | ++aRealIdx; |
91c60b57 |
2511 | } |
2512 | |
6e728f3b |
2513 | if (myRaytraceLightSrcTexture.IsNull()) // create light source buffer |
91c60b57 |
2514 | { |
2515 | myRaytraceLightSrcTexture = new OpenGl_TextureBufferArb; |
91c60b57 |
2516 | } |
189f85a3 |
2517 | |
6e728f3b |
2518 | if (myRaytraceGeometry.Sources.size() != 0 && wasUpdated) |
fc73a202 |
2519 | { |
91c60b57 |
2520 | const GLfloat* aDataPtr = myRaytraceGeometry.Sources.front().Packed(); |
2521 | if (!myRaytraceLightSrcTexture->Init (theGlContext, 4, GLsizei (myRaytraceGeometry.Sources.size() * 2), aDataPtr)) |
2522 | { |
2523 | #ifdef RAY_TRACE_PRINT_INFO |
2524 | std::cout << "Error: Failed to upload light source buffer" << std::endl; |
2525 | #endif |
2526 | return Standard_False; |
2527 | } |
e276548b |
2528 | |
6e728f3b |
2529 | myAccumFrames = 0; // accumulation should be restarted |
91c60b57 |
2530 | } |
e276548b |
2531 | |
6e728f3b |
2532 | return Standard_True; |
fc73a202 |
2533 | } |
2534 | |
25ef750e |
2535 | // ======================================================================= |
189f85a3 |
2536 | // function : setUniformState |
25ef750e |
2537 | // purpose : Sets uniform state for the given ray-tracing shader program |
2538 | // ======================================================================= |
3a9b5dc8 |
2539 | Standard_Boolean OpenGl_View::setUniformState (const Standard_Integer theProgramId, |
2540 | const Standard_Integer theWinSizeX, |
2541 | const Standard_Integer theWinSizeY, |
b27ab03d |
2542 | Graphic3d_Camera::Projection theProjection, |
91c60b57 |
2543 | const Handle(OpenGl_Context)& theGlContext) |
25ef750e |
2544 | { |
3a9b5dc8 |
2545 | // Get projection state |
2546 | OpenGl_MatrixState<Standard_ShortReal>& aCntxProjectionState = theGlContext->ProjectionState; |
2547 | |
2548 | OpenGl_Mat4 aViewPrjMat; |
2549 | OpenGl_Mat4 anUnviewMat; |
2550 | OpenGl_Vec3 aOrigins[4]; |
2551 | OpenGl_Vec3 aDirects[4]; |
2552 | |
b27ab03d |
2553 | if (myCamera->IsOrthographic() |
2554 | || !myRenderParams.IsGlobalIlluminationEnabled) |
2555 | { |
2556 | updateCamera (myCamera->OrientationMatrixF(), |
2557 | aCntxProjectionState.Current(), |
2558 | aOrigins, |
2559 | aDirects, |
2560 | aViewPrjMat, |
2561 | anUnviewMat); |
2562 | } |
2563 | else |
2564 | { |
2565 | updatePerspCameraPT (myCamera->OrientationMatrixF(), |
2566 | aCntxProjectionState.Current(), |
2567 | theProjection, |
2568 | aViewPrjMat, |
2569 | anUnviewMat, |
2570 | theWinSizeX, |
2571 | theWinSizeY); |
2572 | } |
3a9b5dc8 |
2573 | |
2574 | Handle(OpenGl_ShaderProgram)& theProgram = theProgramId == 0 |
2575 | ? myRaytraceProgram |
2576 | : myPostFSAAProgram; |
91c60b57 |
2577 | |
2578 | if (theProgram.IsNull()) |
25ef750e |
2579 | { |
2580 | return Standard_False; |
2581 | } |
b27ab03d |
2582 | |
2583 | theProgram->SetUniform(theGlContext, "uEyeOrig", myEyeOrig); |
2584 | theProgram->SetUniform(theGlContext, "uEyeView", myEyeView); |
2585 | theProgram->SetUniform(theGlContext, "uEyeVert", myEyeVert); |
2586 | theProgram->SetUniform(theGlContext, "uEyeSide", myEyeSide); |
2587 | theProgram->SetUniform(theGlContext, "uEyeSize", myEyeSize); |
2588 | |
2589 | theProgram->SetUniform(theGlContext, "uApertureRadius", myRenderParams.CameraApertureRadius); |
2590 | theProgram->SetUniform(theGlContext, "uFocalPlaneDist", myRenderParams.CameraFocalPlaneDist); |
2591 | |
25ef750e |
2592 | // Set camera state |
189f85a3 |
2593 | theProgram->SetUniform (theGlContext, |
3a9b5dc8 |
2594 | myUniformLocations[theProgramId][OpenGl_RT_uOriginLB], aOrigins[0]); |
189f85a3 |
2595 | theProgram->SetUniform (theGlContext, |
3a9b5dc8 |
2596 | myUniformLocations[theProgramId][OpenGl_RT_uOriginRB], aOrigins[1]); |
189f85a3 |
2597 | theProgram->SetUniform (theGlContext, |
3a9b5dc8 |
2598 | myUniformLocations[theProgramId][OpenGl_RT_uOriginLT], aOrigins[2]); |
189f85a3 |
2599 | theProgram->SetUniform (theGlContext, |
3a9b5dc8 |
2600 | myUniformLocations[theProgramId][OpenGl_RT_uOriginRT], aOrigins[3]); |
189f85a3 |
2601 | theProgram->SetUniform (theGlContext, |
3a9b5dc8 |
2602 | myUniformLocations[theProgramId][OpenGl_RT_uDirectLB], aDirects[0]); |
189f85a3 |
2603 | theProgram->SetUniform (theGlContext, |
3a9b5dc8 |
2604 | myUniformLocations[theProgramId][OpenGl_RT_uDirectRB], aDirects[1]); |
189f85a3 |
2605 | theProgram->SetUniform (theGlContext, |
3a9b5dc8 |
2606 | myUniformLocations[theProgramId][OpenGl_RT_uDirectLT], aDirects[2]); |
189f85a3 |
2607 | theProgram->SetUniform (theGlContext, |
3a9b5dc8 |
2608 | myUniformLocations[theProgramId][OpenGl_RT_uDirectRT], aDirects[3]); |
1d865689 |
2609 | theProgram->SetUniform (theGlContext, |
3a9b5dc8 |
2610 | myUniformLocations[theProgramId][OpenGl_RT_uViewPrMat], aViewPrjMat); |
189f85a3 |
2611 | theProgram->SetUniform (theGlContext, |
3a9b5dc8 |
2612 | myUniformLocations[theProgramId][OpenGl_RT_uUnviewMat], anUnviewMat); |
312a4043 |
2613 | |
b09447ed |
2614 | // Set screen dimensions |
2615 | myRaytraceProgram->SetUniform (theGlContext, |
2616 | myUniformLocations[theProgramId][OpenGl_RT_uWinSizeX], theWinSizeX); |
2617 | myRaytraceProgram->SetUniform (theGlContext, |
2618 | myUniformLocations[theProgramId][OpenGl_RT_uWinSizeY], theWinSizeY); |
2619 | |
2620 | // Set 3D scene parameters |
189f85a3 |
2621 | theProgram->SetUniform (theGlContext, |
91c60b57 |
2622 | myUniformLocations[theProgramId][OpenGl_RT_uSceneRad], myRaytraceSceneRadius); |
189f85a3 |
2623 | theProgram->SetUniform (theGlContext, |
91c60b57 |
2624 | myUniformLocations[theProgramId][OpenGl_RT_uSceneEps], myRaytraceSceneEpsilon); |
3a9b5dc8 |
2625 | |
b09447ed |
2626 | // Set light source parameters |
3a9b5dc8 |
2627 | const Standard_Integer aLightSourceBufferSize = |
2628 | static_cast<Standard_Integer> (myRaytraceGeometry.Sources.size()); |
b09447ed |
2629 | |
189f85a3 |
2630 | theProgram->SetUniform (theGlContext, |
91c60b57 |
2631 | myUniformLocations[theProgramId][OpenGl_RT_uLightCount], aLightSourceBufferSize); |
8c820969 |
2632 | |
25ef750e |
2633 | // Set array of 64-bit texture handles |
91c60b57 |
2634 | if (theGlContext->arbTexBindless != NULL && myRaytraceGeometry.HasTextures()) |
25ef750e |
2635 | { |
47e9c178 |
2636 | const std::vector<GLuint64>& aTextures = myRaytraceGeometry.TextureHandles(); |
2637 | |
189f85a3 |
2638 | theProgram->SetUniform (theGlContext, myUniformLocations[theProgramId][OpenGl_RT_uTexSamplersArray], |
3a9b5dc8 |
2639 | static_cast<GLsizei> (aTextures.size()), reinterpret_cast<const OpenGl_Vec2u*> (&aTextures.front())); |
25ef750e |
2640 | } |
2641 | |
189f85a3 |
2642 | // Set background colors (only gradient background supported) |
3a9b5dc8 |
2643 | if (myBgGradientArray != NULL && myBgGradientArray->IsDefined()) |
25ef750e |
2644 | { |
189f85a3 |
2645 | theProgram->SetUniform (theGlContext, |
2646 | myUniformLocations[theProgramId][OpenGl_RT_uBackColorTop], myBgGradientArray->GradientColor (0)); |
2647 | theProgram->SetUniform (theGlContext, |
2648 | myUniformLocations[theProgramId][OpenGl_RT_uBackColorBot], myBgGradientArray->GradientColor (1)); |
25ef750e |
2649 | } |
67c12d80 |
2650 | else |
2651 | { |
b6472664 |
2652 | const OpenGl_Vec4& aBackColor = myBgColor; |
3a9b5dc8 |
2653 | |
67c12d80 |
2654 | theProgram->SetUniform (theGlContext, |
2655 | myUniformLocations[theProgramId][OpenGl_RT_uBackColorTop], aBackColor); |
2656 | theProgram->SetUniform (theGlContext, |
2657 | myUniformLocations[theProgramId][OpenGl_RT_uBackColorBot], aBackColor); |
2658 | } |
25ef750e |
2659 | |
b09447ed |
2660 | // Set environment map parameters |
cc8cbabe |
2661 | const Standard_Boolean toDisableEnvironmentMap = myTextureEnv.IsNull() |
2662 | || myTextureEnv->IsEmpty() |
2663 | || !myTextureEnv->First()->IsValid(); |
2664 | |
6e728f3b |
2665 | theProgram->SetUniform (theGlContext, |
2666 | myUniformLocations[theProgramId][OpenGl_RT_uSphereMapEnabled], toDisableEnvironmentMap ? 0 : 1); |
2667 | |
189f85a3 |
2668 | theProgram->SetUniform (theGlContext, |
c357e426 |
2669 | myUniformLocations[theProgramId][OpenGl_RT_uSphereMapForBack], myRenderParams.UseEnvironmentMapBackground ? 1 : 0); |
189f85a3 |
2670 | |
b09447ed |
2671 | if (myRenderParams.IsGlobalIlluminationEnabled) // GI parameters |
2672 | { |
2673 | theProgram->SetUniform (theGlContext, |
2674 | myUniformLocations[theProgramId][OpenGl_RT_uMaxRadiance], myRenderParams.RadianceClampingValue); |
2675 | |
2676 | theProgram->SetUniform (theGlContext, |
2677 | myUniformLocations[theProgramId][OpenGl_RT_uBlockedRngEnabled], myRenderParams.CoherentPathTracingMode ? 1 : 0); |
2678 | |
2679 | // Check whether we should restart accumulation for run-time parameters |
2680 | if (myRenderParams.RadianceClampingValue != myRaytraceParameters.RadianceClampingValue |
2681 | || myRenderParams.UseEnvironmentMapBackground != myRaytraceParameters.UseEnvMapForBackground) |
2682 | { |
2683 | myAccumFrames = 0; // accumulation should be restarted |
2684 | |
2685 | myRaytraceParameters.RadianceClampingValue = myRenderParams.RadianceClampingValue; |
2686 | myRaytraceParameters.UseEnvMapForBackground = myRenderParams.UseEnvironmentMapBackground; |
2687 | } |
2688 | } |
2689 | else // RT parameters |
2690 | { |
2691 | // Set ambient light source |
2692 | theProgram->SetUniform (theGlContext, |
2693 | myUniformLocations[theProgramId][OpenGl_RT_uLightAmbnt], myRaytraceGeometry.Ambient); |
2694 | |
2695 | // Enable/disable run-time ray-tracing effects |
2696 | theProgram->SetUniform (theGlContext, |
2697 | myUniformLocations[theProgramId][OpenGl_RT_uShadowsEnabled], myRenderParams.IsShadowEnabled ? 1 : 0); |
2698 | theProgram->SetUniform (theGlContext, |
2699 | myUniformLocations[theProgramId][OpenGl_RT_uReflectEnabled], myRenderParams.IsReflectionEnabled ? 1 : 0); |
2700 | } |
2701 | |
189f85a3 |
2702 | return Standard_True; |
25ef750e |
2703 | } |
2704 | |
91c60b57 |
2705 | // ======================================================================= |
189f85a3 |
2706 | // function : bindRaytraceTextures |
91c60b57 |
2707 | // purpose : Binds ray-trace textures to corresponding texture units |
2708 | // ======================================================================= |
66d1cdc6 |
2709 | void OpenGl_View::bindRaytraceTextures (const Handle(OpenGl_Context)& theGlContext, |
2710 | int theStereoView) |
91c60b57 |
2711 | { |
66d1cdc6 |
2712 | if (myRaytraceParameters.AdaptiveScreenSampling |
2713 | && myRaytraceParameters.GlobalIllumination) |
3a9b5dc8 |
2714 | { |
2715 | #if !defined(GL_ES_VERSION_2_0) |
66d1cdc6 |
2716 | theGlContext->core42->glBindImageTexture (OpenGl_RT_OutputImage, |
2717 | myRaytraceOutputTexture[theStereoView]->TextureId(), 0, GL_TRUE, 0, GL_READ_WRITE, GL_R32F); |
2718 | theGlContext->core42->glBindImageTexture (OpenGl_RT_VisualErrorImage, |
2719 | myRaytraceVisualErrorTexture[theStereoView]->TextureId(), 0, GL_TRUE, 0, GL_READ_WRITE, GL_R32I); |
e084dbbc |
2720 | if (myRaytraceParameters.AdaptiveScreenSamplingAtomic) |
2721 | { |
2722 | theGlContext->core42->glBindImageTexture (OpenGl_RT_TileOffsetsImage, |
2723 | myRaytraceTileOffsetsTexture[theStereoView]->TextureId(), 0, GL_TRUE, 0, GL_READ_ONLY, GL_RG32I); |
2724 | } |
2725 | else |
2726 | { |
2727 | theGlContext->core42->glBindImageTexture (OpenGl_RT_TileSamplesImage, |
2728 | myRaytraceTileSamplesTexture[theStereoView]->TextureId(), 0, GL_TRUE, 0, GL_READ_WRITE, GL_R32I); |
2729 | } |
66d1cdc6 |
2730 | #else |
2731 | (void )theStereoView; |
2732 | #endif |
3a9b5dc8 |
2733 | } |
2734 | |
cc8cbabe |
2735 | if (!myTextureEnv.IsNull() |
2736 | && !myTextureEnv->IsEmpty() |
2737 | && myTextureEnv->First()->IsValid()) |
6e728f3b |
2738 | { |
cc8cbabe |
2739 | myTextureEnv->First()->Bind (theGlContext, OpenGl_RT_EnvironmentMapTexture); |
6e728f3b |
2740 | } |
2741 | |
cc8cbabe |
2742 | mySceneMinPointTexture ->BindTexture (theGlContext, OpenGl_RT_SceneMinPointTexture); |
2743 | mySceneMaxPointTexture ->BindTexture (theGlContext, OpenGl_RT_SceneMaxPointTexture); |
2744 | mySceneNodeInfoTexture ->BindTexture (theGlContext, OpenGl_RT_SceneNodeInfoTexture); |
2745 | myGeometryVertexTexture ->BindTexture (theGlContext, OpenGl_RT_GeometryVertexTexture); |
2746 | myGeometryNormalTexture ->BindTexture (theGlContext, OpenGl_RT_GeometryNormalTexture); |
2747 | myGeometryTexCrdTexture ->BindTexture (theGlContext, OpenGl_RT_GeometryTexCrdTexture); |
2748 | myGeometryTriangTexture ->BindTexture (theGlContext, OpenGl_RT_GeometryTriangTexture); |
2749 | mySceneTransformTexture ->BindTexture (theGlContext, OpenGl_RT_SceneTransformTexture); |
2750 | myRaytraceMaterialTexture->BindTexture (theGlContext, OpenGl_RT_RaytraceMaterialTexture); |
2751 | myRaytraceLightSrcTexture->BindTexture (theGlContext, OpenGl_RT_RaytraceLightSrcTexture); |
91c60b57 |
2752 | } |
2753 | |
2754 | // ======================================================================= |
189f85a3 |
2755 | // function : unbindRaytraceTextures |
91c60b57 |
2756 | // purpose : Unbinds ray-trace textures from corresponding texture units |
2757 | // ======================================================================= |
2758 | void OpenGl_View::unbindRaytraceTextures (const Handle(OpenGl_Context)& theGlContext) |
2759 | { |
cc8cbabe |
2760 | mySceneMinPointTexture ->UnbindTexture (theGlContext, OpenGl_RT_SceneMinPointTexture); |
2761 | mySceneMaxPointTexture ->UnbindTexture (theGlContext, OpenGl_RT_SceneMaxPointTexture); |
2762 | mySceneNodeInfoTexture ->UnbindTexture (theGlContext, OpenGl_RT_SceneNodeInfoTexture); |
2763 | myGeometryVertexTexture ->UnbindTexture (theGlContext, OpenGl_RT_GeometryVertexTexture); |
2764 | myGeometryNormalTexture ->UnbindTexture (theGlContext, OpenGl_RT_GeometryNormalTexture); |
2765 | myGeometryTexCrdTexture ->UnbindTexture (theGlContext, OpenGl_RT_GeometryTexCrdTexture); |
2766 | myGeometryTriangTexture ->UnbindTexture (theGlContext, OpenGl_RT_GeometryTriangTexture); |
2767 | mySceneTransformTexture ->UnbindTexture (theGlContext, OpenGl_RT_SceneTransformTexture); |
2768 | myRaytraceMaterialTexture->UnbindTexture (theGlContext, OpenGl_RT_RaytraceMaterialTexture); |
2769 | myRaytraceLightSrcTexture->UnbindTexture (theGlContext, OpenGl_RT_RaytraceLightSrcTexture); |
91c60b57 |
2770 | |
91c60b57 |
2771 | theGlContext->core15fwd->glActiveTexture (GL_TEXTURE0); |
2772 | } |
2773 | |
fc73a202 |
2774 | // ======================================================================= |
189f85a3 |
2775 | // function : runRaytraceShaders |
fc73a202 |
2776 | // purpose : Runs ray-tracing shader programs |
2777 | // ======================================================================= |
c357e426 |
2778 | Standard_Boolean OpenGl_View::runRaytraceShaders (const Standard_Integer theSizeX, |
91c60b57 |
2779 | const Standard_Integer theSizeY, |
bf02aa7d |
2780 | Graphic3d_Camera::Projection theProjection, |
38a0206f |
2781 | OpenGl_FrameBuffer* theReadDrawFbo, |
91c60b57 |
2782 | const Handle(OpenGl_Context)& theGlContext) |
fc73a202 |
2783 | { |
3a9b5dc8 |
2784 | Standard_Boolean aResult = theGlContext->BindProgram (myRaytraceProgram); |
189f85a3 |
2785 | |
3a9b5dc8 |
2786 | aResult &= setUniformState (0, |
2787 | theSizeX, |
2788 | theSizeY, |
b27ab03d |
2789 | theProjection, |
3a9b5dc8 |
2790 | theGlContext); |
bf02aa7d |
2791 | |
3a9b5dc8 |
2792 | if (myRaytraceParameters.GlobalIllumination) // path tracing |
189f85a3 |
2793 | { |
66d1cdc6 |
2794 | aResult &= runPathtrace (theSizeX, theSizeY, theProjection, theGlContext); |
2795 | aResult &= runPathtraceOut (theProjection, theReadDrawFbo, theGlContext); |
189f85a3 |
2796 | } |
3a9b5dc8 |
2797 | else // Whitted-style ray-tracing |
fc73a202 |
2798 | { |
3a9b5dc8 |
2799 | aResult &= runRaytrace (theSizeX, theSizeY, theProjection, theReadDrawFbo, theGlContext); |
fc73a202 |
2800 | } |
2801 | |
3a9b5dc8 |
2802 | return aResult; |
2803 | } |
fc73a202 |
2804 | |
3a9b5dc8 |
2805 | // ======================================================================= |
2806 | // function : runRaytrace |
2807 | // purpose : Runs Whitted-style ray-tracing |
2808 | // ======================================================================= |
2809 | Standard_Boolean OpenGl_View::runRaytrace (const Standard_Integer theSizeX, |
2810 | const Standard_Integer theSizeY, |
2811 | Graphic3d_Camera::Projection theProjection, |
2812 | OpenGl_FrameBuffer* theReadDrawFbo, |
2813 | const Handle(OpenGl_Context)& theGlContext) |
2814 | { |
2815 | Standard_Boolean aResult = Standard_True; |
fc73a202 |
2816 | |
3a9b5dc8 |
2817 | // Choose proper set of frame buffers for stereo rendering |
66d1cdc6 |
2818 | const Standard_Integer aFBOIdx = (theProjection == Graphic3d_Camera::Projection_MonoRightEye) ? 1 : 0; |
2819 | bindRaytraceTextures (theGlContext, aFBOIdx); |
3a9b5dc8 |
2820 | |
2821 | if (myRenderParams.IsAntialiasingEnabled) // if second FSAA pass is used |
2822 | { |
2823 | myRaytraceFBO1[aFBOIdx]->BindBuffer (theGlContext); |
2824 | |
2825 | glClear (GL_DEPTH_BUFFER_BIT); // render the image with depth |
fc73a202 |
2826 | } |
25ef750e |
2827 | |
189f85a3 |
2828 | theGlContext->core20fwd->glDrawArrays (GL_TRIANGLES, 0, 6); |
fc73a202 |
2829 | |
3a9b5dc8 |
2830 | if (myRenderParams.IsAntialiasingEnabled) |
189f85a3 |
2831 | { |
3a9b5dc8 |
2832 | glDisable (GL_DEPTH_TEST); // improve jagged edges without depth buffer |
1d865689 |
2833 | |
3a9b5dc8 |
2834 | // bind ray-tracing output image as input |
cc8cbabe |
2835 | myRaytraceFBO1[aFBOIdx]->ColorTexture()->Bind (theGlContext, OpenGl_RT_FsaaInputTexture); |
189f85a3 |
2836 | |
2837 | aResult &= theGlContext->BindProgram (myPostFSAAProgram); |
2838 | |
3a9b5dc8 |
2839 | aResult &= setUniformState (1 /* FSAA ID */, |
2840 | theSizeX, |
2841 | theSizeY, |
b27ab03d |
2842 | theProjection, |
189f85a3 |
2843 | theGlContext); |
2844 | |
91c60b57 |
2845 | // Perform multi-pass adaptive FSAA using ping-pong technique. |
2846 | // We use 'FLIPTRI' sampling pattern changing for every pixel |
2847 | // (3 additional samples per pixel, the 1st sample is already |
2848 | // available from initial ray-traced image). |
2849 | for (Standard_Integer anIt = 1; anIt < 4; ++anIt) |
50d0e1ce |
2850 | { |
91c60b57 |
2851 | GLfloat aOffsetX = 1.f / theSizeX; |
2852 | GLfloat aOffsetY = 1.f / theSizeY; |
50d0e1ce |
2853 | |
91c60b57 |
2854 | if (anIt == 1) |
2855 | { |
2856 | aOffsetX *= -0.55f; |
2857 | aOffsetY *= 0.55f; |
2858 | } |
2859 | else if (anIt == 2) |
2860 | { |
2861 | aOffsetX *= 0.00f; |
2862 | aOffsetY *= -0.55f; |
2863 | } |
2864 | else if (anIt == 3) |
2865 | { |
2866 | aOffsetX *= 0.55f; |
2867 | aOffsetY *= 0.00f; |
2868 | } |
fc73a202 |
2869 | |
91c60b57 |
2870 | aResult &= myPostFSAAProgram->SetUniform (theGlContext, |
2871 | myUniformLocations[1][OpenGl_RT_uSamples], anIt + 1); |
2872 | aResult &= myPostFSAAProgram->SetUniform (theGlContext, |
2873 | myUniformLocations[1][OpenGl_RT_uOffsetX], aOffsetX); |
2874 | aResult &= myPostFSAAProgram->SetUniform (theGlContext, |
2875 | myUniformLocations[1][OpenGl_RT_uOffsetY], aOffsetY); |
fc73a202 |
2876 | |
3a9b5dc8 |
2877 | Handle(OpenGl_FrameBuffer)& aFramebuffer = anIt % 2 |
2878 | ? myRaytraceFBO2[aFBOIdx] |
2879 | : myRaytraceFBO1[aFBOIdx]; |
fc73a202 |
2880 | |
d9e72440 |
2881 | aFramebuffer->BindBuffer (theGlContext); |
50d0e1ce |
2882 | |
3a9b5dc8 |
2883 | // perform adaptive FSAA pass |
91c60b57 |
2884 | theGlContext->core20fwd->glDrawArrays (GL_TRIANGLES, 0, 6); |
e276548b |
2885 | |
cc8cbabe |
2886 | aFramebuffer->ColorTexture()->Bind (theGlContext, OpenGl_RT_FsaaInputTexture); |
e276548b |
2887 | } |
d9e72440 |
2888 | |
66d1cdc6 |
2889 | const Handle(OpenGl_FrameBuffer)& aRenderImageFramebuffer = myRaytraceFBO2[aFBOIdx]; |
2890 | const Handle(OpenGl_FrameBuffer)& aDepthSourceFramebuffer = myRaytraceFBO1[aFBOIdx]; |
d9e72440 |
2891 | |
3a9b5dc8 |
2892 | glEnable (GL_DEPTH_TEST); |
d9e72440 |
2893 | |
3a9b5dc8 |
2894 | // Display filtered image |
d9e72440 |
2895 | theGlContext->BindProgram (myOutImageProgram); |
2896 | |
d9e72440 |
2897 | if (theReadDrawFbo != NULL) |
2898 | { |
2899 | theReadDrawFbo->BindBuffer (theGlContext); |
2900 | } |
2901 | else |
2902 | { |
3a9b5dc8 |
2903 | aRenderImageFramebuffer->UnbindBuffer (theGlContext); |
d9e72440 |
2904 | } |
2905 | |
cc8cbabe |
2906 | aRenderImageFramebuffer->ColorTexture() ->Bind (theGlContext, OpenGl_RT_PrevAccumTexture); |
2907 | aDepthSourceFramebuffer->DepthStencilTexture()->Bind (theGlContext, OpenGl_RT_RaytraceDepthTexture); |
d9e72440 |
2908 | |
3a9b5dc8 |
2909 | // copy the output image with depth values |
d9e72440 |
2910 | theGlContext->core20fwd->glDrawArrays (GL_TRIANGLES, 0, 6); |
2911 | |
cc8cbabe |
2912 | aDepthSourceFramebuffer->DepthStencilTexture()->Unbind (theGlContext, OpenGl_RT_RaytraceDepthTexture); |
2913 | aRenderImageFramebuffer->ColorTexture() ->Unbind (theGlContext, OpenGl_RT_PrevAccumTexture); |
e276548b |
2914 | } |
fc73a202 |
2915 | |
91c60b57 |
2916 | unbindRaytraceTextures (theGlContext); |
a89742cf |
2917 | |
91c60b57 |
2918 | theGlContext->BindProgram (NULL); |
fc73a202 |
2919 | |
91c60b57 |
2920 | return aResult; |
e276548b |
2921 | } |
2922 | |
3a9b5dc8 |
2923 | // ======================================================================= |
2924 | // function : runPathtrace |
2925 | // purpose : Runs path tracing shader |
2926 | // ======================================================================= |
4eaaf9d8 |
2927 | Standard_Boolean OpenGl_View::runPathtrace (const Standard_Integer theSizeX, |
2928 | const Standard_Integer theSizeY, |
2929 | const Graphic3d_Camera::Projection theProjection, |
3a9b5dc8 |
2930 | const Handle(OpenGl_Context)& theGlContext) |
2931 | { |
6e728f3b |
2932 | if (myToUpdateEnvironmentMap) // check whether the map was changed |
2933 | { |
2934 | myAccumFrames = myToUpdateEnvironmentMap = 0; |
2935 | } |
b27ab03d |
2936 | |
2937 | if (myRenderParams.CameraApertureRadius != myPrevCameraApertureRadius |
2938 | || myRenderParams.CameraFocalPlaneDist != myPrevCameraFocalPlaneDist) |
2939 | { |
b27ab03d |
2940 | myPrevCameraApertureRadius = myRenderParams.CameraApertureRadius; |
2941 | myPrevCameraFocalPlaneDist = myRenderParams.CameraFocalPlaneDist; |
b27ab03d |
2942 | myAccumFrames = 0; |
2943 | } |
2944 | |
2945 | // Choose proper set of frame buffers for stereo rendering |
66d1cdc6 |
2946 | const Standard_Integer aFBOIdx = (theProjection == Graphic3d_Camera::Projection_MonoRightEye) ? 1 : 0; |
6e728f3b |
2947 | |
3a9b5dc8 |
2948 | if (myRaytraceParameters.AdaptiveScreenSampling) |
2949 | { |
2950 | if (myAccumFrames == 0) |
2951 | { |
2952 | myTileSampler.Reset(); // reset tile sampler to its initial state |
3a9b5dc8 |
2953 | |
b27ab03d |
2954 | // Adaptive sampling is starting at the second frame |
e084dbbc |
2955 | if (myRaytraceParameters.AdaptiveScreenSamplingAtomic) |
2956 | { |
2957 | myTileSampler.UploadOffsets (theGlContext, myRaytraceTileOffsetsTexture[aFBOIdx], false); |
2958 | } |
2959 | else |
2960 | { |
2961 | myTileSampler.UploadSamples (theGlContext, myRaytraceTileSamplesTexture[aFBOIdx], false); |
2962 | } |
3a9b5dc8 |
2963 | |
66d1cdc6 |
2964 | #if !defined(GL_ES_VERSION_2_0) |
2965 | theGlContext->core44->glClearTexImage (myRaytraceOutputTexture[aFBOIdx]->TextureId(), 0, GL_RED, GL_FLOAT, NULL); |
2966 | #endif |
2967 | } |
b27ab03d |
2968 | |
66d1cdc6 |
2969 | // Clear adaptive screen sampling images |
2970 | #if !defined(GL_ES_VERSION_2_0) |
2971 | theGlContext->core44->glClearTexImage (myRaytraceVisualErrorTexture[aFBOIdx]->TextureId(), 0, GL_RED_INTEGER, GL_INT, NULL); |
2972 | #endif |
2973 | } |
3a9b5dc8 |
2974 | |
66d1cdc6 |
2975 | bindRaytraceTextures (theGlContext, aFBOIdx); |
3a9b5dc8 |
2976 | |
66d1cdc6 |
2977 | const Handle(OpenGl_FrameBuffer)& anAccumImageFramebuffer = myAccumFrames % 2 ? myRaytraceFBO2[aFBOIdx] : myRaytraceFBO1[aFBOIdx]; |
cc8cbabe |
2978 | anAccumImageFramebuffer->ColorTexture()->Bind (theGlContext, OpenGl_RT_PrevAccumTexture); |
3a9b5dc8 |
2979 | |
66d1cdc6 |
2980 | // Set frame accumulation weight |
2981 | myRaytraceProgram->SetUniform (theGlContext, myUniformLocations[0][OpenGl_RT_uAccumSamples], myAccumFrames); |
3a9b5dc8 |
2982 | |
66d1cdc6 |
2983 | // Set image uniforms for render program |
3a9b5dc8 |
2984 | if (myRaytraceParameters.AdaptiveScreenSampling) |
2985 | { |
66d1cdc6 |
2986 | myRaytraceProgram->SetUniform (theGlContext, myUniformLocations[0][OpenGl_RT_uRenderImage], OpenGl_RT_OutputImage); |
e084dbbc |
2987 | myRaytraceProgram->SetUniform (theGlContext, myUniformLocations[0][OpenGl_RT_uTilesImage], OpenGl_RT_TileSamplesImage); |
66d1cdc6 |
2988 | myRaytraceProgram->SetUniform (theGlContext, myUniformLocations[0][OpenGl_RT_uOffsetImage], OpenGl_RT_TileOffsetsImage); |
2989 | myRaytraceProgram->SetUniform (theGlContext, myUniformLocations[0][OpenGl_RT_uTileSize], myTileSampler.TileSize()); |
3a9b5dc8 |
2990 | } |
2991 | |
66d1cdc6 |
2992 | const Handle(OpenGl_FrameBuffer)& aRenderImageFramebuffer = myAccumFrames % 2 ? myRaytraceFBO1[aFBOIdx] : myRaytraceFBO2[aFBOIdx]; |
2993 | aRenderImageFramebuffer->BindBuffer (theGlContext); |
e084dbbc |
2994 | if (myRaytraceParameters.AdaptiveScreenSampling |
2995 | && myRaytraceParameters.AdaptiveScreenSamplingAtomic) |
4eaaf9d8 |
2996 | { |
66d1cdc6 |
2997 | // extend viewport here, so that tiles at boundaries (cut tile size by target rendering viewport) |
2998 | // redirected to inner tiles (full tile size) are drawn entirely |
2999 | const Graphic3d_Vec2i anOffsetViewport = myTileSampler.OffsetTilesViewport (myAccumFrames > 1); // shrunk offsets texture will be uploaded since 3rd frame |
3000 | glViewport (0, 0, anOffsetViewport.x(), anOffsetViewport.y()); |
4eaaf9d8 |
3001 | } |
3002 | |
3a9b5dc8 |
3003 | // Generate for the given RNG seed |
66d1cdc6 |
3004 | glDisable (GL_DEPTH_TEST); |
3a9b5dc8 |
3005 | |
e084dbbc |
3006 | // Adaptive Screen Sampling computes the same overall amount of samples per frame redraw as normal Path Tracing, |
3007 | // but distributes them unequally across pixels (grouped in tiles), so that some pixels do not receive new samples at all. |
3008 | // |
3009 | // Offsets map (redirecting currently rendered tile to another tile) allows performing Adaptive Screen Sampling in single pass, |
3010 | // but current implementation relies on atomic float operations (AdaptiveScreenSamplingAtomic) for this. |
3011 | // So that when atomic floats are not supported by GPU, multi-pass rendering is used instead. |
3012 | // |
3013 | // Single-pass rendering is more optimal due to smaller amount of draw calls, |
3014 | // memory synchronization barriers, discarding most of the fragments and bad parallelization in case of very small amount of tiles requiring more samples. |
3015 | // However, atomic operations on float values still produces different result (close, but not bit exact) making non-regression testing not robust. |
3016 | // It should be possible following single-pass rendering approach but using extra accumulation buffer and resolving pass as possible improvement. |
3017 | const int aNbPasses = myRaytraceParameters.AdaptiveScreenSampling |
3018 | && !myRaytraceParameters.AdaptiveScreenSamplingAtomic |
3019 | ? myTileSampler.MaxTileSamples() |
3020 | : 1; |
3021 | if (myAccumFrames == 0) |
3022 | { |
3023 | myRNG.SetSeed(); // start RNG from beginning |
3024 | } |
3025 | for (int aPassIter = 0; aPassIter < aNbPasses; ++aPassIter) |
3026 | { |
3027 | myRaytraceProgram->SetUniform (theGlContext, myUniformLocations[0][OpenGl_RT_uFrameRndSeed], static_cast<Standard_Integer> (myRNG.NextInt() >> 2)); |
3028 | theGlContext->core20fwd->glDrawArrays (GL_TRIANGLES, 0, 6); |
3029 | if (myRaytraceParameters.AdaptiveScreenSampling) |
3030 | { |
3031 | #if !defined(GL_ES_VERSION_2_0) |
3032 | theGlContext->core44->glMemoryBarrier (GL_SHADER_IMAGE_ACCESS_BARRIER_BIT); |
3033 | #endif |
3034 | } |
3035 | } |
66d1cdc6 |
3036 | aRenderImageFramebuffer->UnbindBuffer (theGlContext); |
3037 | |
e084dbbc |
3038 | if (myRaytraceParameters.AdaptiveScreenSampling |
3039 | && myRaytraceParameters.AdaptiveScreenSamplingAtomic) |
4eaaf9d8 |
3040 | { |
66d1cdc6 |
3041 | glViewport (0, 0, theSizeX, theSizeY); |
4eaaf9d8 |
3042 | } |
66d1cdc6 |
3043 | return true; |
3044 | } |
4eaaf9d8 |
3045 | |
66d1cdc6 |
3046 | // ======================================================================= |
3047 | // function : runPathtraceOut |
3048 | // purpose : |
3049 | // ======================================================================= |
3050 | Standard_Boolean OpenGl_View::runPathtraceOut (const Graphic3d_Camera::Projection theProjection, |
3051 | OpenGl_FrameBuffer* theReadDrawFbo, |
3052 | const Handle(OpenGl_Context)& theGlContext) |
3053 | { |
3a9b5dc8 |
3054 | // Output accumulated path traced image |
3055 | theGlContext->BindProgram (myOutImageProgram); |
3056 | |
66d1cdc6 |
3057 | // Choose proper set of frame buffers for stereo rendering |
3058 | const Standard_Integer aFBOIdx = (theProjection == Graphic3d_Camera::Projection_MonoRightEye) ? 1 : 0; |
3059 | |
3a9b5dc8 |
3060 | if (myRaytraceParameters.AdaptiveScreenSampling) |
3061 | { |
3062 | // Set uniforms for display program |
66d1cdc6 |
3063 | myOutImageProgram->SetUniform (theGlContext, "uRenderImage", OpenGl_RT_OutputImage); |
3a9b5dc8 |
3064 | myOutImageProgram->SetUniform (theGlContext, "uAccumFrames", myAccumFrames); |
66d1cdc6 |
3065 | myOutImageProgram->SetUniform (theGlContext, "uVarianceImage", OpenGl_RT_VisualErrorImage); |
3a9b5dc8 |
3066 | myOutImageProgram->SetUniform (theGlContext, "uDebugAdaptive", myRenderParams.ShowSamplingTiles ? 1 : 0); |
66d1cdc6 |
3067 | myOutImageProgram->SetUniform (theGlContext, "uTileSize", myTileSampler.TileSize()); |
3068 | myOutImageProgram->SetUniform (theGlContext, "uVarianceScaleFactor", myTileSampler.VarianceScaleFactor()); |
3a9b5dc8 |
3069 | } |
3070 | |
eb85ed36 |
3071 | if (myRaytraceParameters.GlobalIllumination) |
3072 | { |
3073 | myOutImageProgram->SetUniform(theGlContext, "uExposure", myRenderParams.Exposure); |
3074 | switch (myRaytraceParameters.ToneMappingMethod) |
3075 | { |
3076 | case Graphic3d_ToneMappingMethod_Disabled: |
3077 | break; |
3078 | case Graphic3d_ToneMappingMethod_Filmic: |
3079 | myOutImageProgram->SetUniform (theGlContext, "uWhitePoint", myRenderParams.WhitePoint); |
3080 | break; |
3081 | } |
3082 | } |
3083 | |
3a9b5dc8 |
3084 | if (theReadDrawFbo != NULL) |
3085 | { |
3086 | theReadDrawFbo->BindBuffer (theGlContext); |
3087 | } |
3a9b5dc8 |
3088 | |
66d1cdc6 |
3089 | const Handle(OpenGl_FrameBuffer)& aRenderImageFramebuffer = myAccumFrames % 2 ? myRaytraceFBO1[aFBOIdx] : myRaytraceFBO2[aFBOIdx]; |
cc8cbabe |
3090 | aRenderImageFramebuffer->ColorTexture()->Bind (theGlContext, OpenGl_RT_PrevAccumTexture); |
3a9b5dc8 |
3091 | |
3a9b5dc8 |
3092 | // Copy accumulated image with correct depth values |
66d1cdc6 |
3093 | glEnable (GL_DEPTH_TEST); |
3a9b5dc8 |
3094 | theGlContext->core20fwd->glDrawArrays (GL_TRIANGLES, 0, 6); |
3095 | |
cc8cbabe |
3096 | aRenderImageFramebuffer->ColorTexture()->Unbind (theGlContext, OpenGl_RT_PrevAccumTexture); |
3a9b5dc8 |
3097 | |
3098 | if (myRaytraceParameters.AdaptiveScreenSampling) |
3099 | { |
66d1cdc6 |
3100 | // Download visual error map from the GPU and build adjusted tile offsets for optimal image sampling |
3101 | myTileSampler.GrabVarianceMap (theGlContext, myRaytraceVisualErrorTexture[aFBOIdx]); |
e084dbbc |
3102 | if (myRaytraceParameters.AdaptiveScreenSamplingAtomic) |
3103 | { |
3104 | myTileSampler.UploadOffsets (theGlContext, myRaytraceTileOffsetsTexture[aFBOIdx], myAccumFrames != 0); |
3105 | } |
3106 | else |
3107 | { |
3108 | myTileSampler.UploadSamples (theGlContext, myRaytraceTileSamplesTexture[aFBOIdx], myAccumFrames != 0); |
3109 | } |
3a9b5dc8 |
3110 | } |
3111 | |
3112 | unbindRaytraceTextures (theGlContext); |
3a9b5dc8 |
3113 | theGlContext->BindProgram (NULL); |
66d1cdc6 |
3114 | return true; |
3a9b5dc8 |
3115 | } |
3116 | |
e276548b |
3117 | // ======================================================================= |
189f85a3 |
3118 | // function : raytrace |
fc73a202 |
3119 | // purpose : Redraws the window using OpenGL/GLSL ray-tracing |
e276548b |
3120 | // ======================================================================= |
c357e426 |
3121 | Standard_Boolean OpenGl_View::raytrace (const Standard_Integer theSizeX, |
91c60b57 |
3122 | const Standard_Integer theSizeY, |
bf02aa7d |
3123 | Graphic3d_Camera::Projection theProjection, |
38a0206f |
3124 | OpenGl_FrameBuffer* theReadDrawFbo, |
91c60b57 |
3125 | const Handle(OpenGl_Context)& theGlContext) |
e276548b |
3126 | { |
66d1cdc6 |
3127 | if (!initRaytraceResources (theSizeX, theSizeY, theGlContext)) |
91c60b57 |
3128 | { |
e276548b |
3129 | return Standard_False; |
91c60b57 |
3130 | } |
3131 | |
bf02aa7d |
3132 | if (!updateRaytraceBuffers (theSizeX, theSizeY, theGlContext)) |
91c60b57 |
3133 | { |
3134 | return Standard_False; |
3135 | } |
e276548b |
3136 | |
3a9b5dc8 |
3137 | OpenGl_Mat4 aLightSourceMatrix; |
e276548b |
3138 | |
3a9b5dc8 |
3139 | // Get inversed model-view matrix for transforming lights |
3140 | myCamera->OrientationMatrixF().Inverted (aLightSourceMatrix); |
e276548b |
3141 | |
3a9b5dc8 |
3142 | if (!updateRaytraceLightSources (aLightSourceMatrix, theGlContext)) |
a89742cf |
3143 | { |
3a9b5dc8 |
3144 | return Standard_False; |
a89742cf |
3145 | } |
3146 | |
3a9b5dc8 |
3147 | // Generate image using Whitted-style ray-tracing or path tracing |
e276548b |
3148 | if (myIsRaytraceDataValid) |
3149 | { |
189f85a3 |
3150 | myRaytraceScreenQuad.BindVertexAttrib (theGlContext, Graphic3d_TOA_POS); |
fc73a202 |
3151 | |
91c60b57 |
3152 | if (!myRaytraceGeometry.AcquireTextures (theGlContext)) |
25ef750e |
3153 | { |
3b523c4c |
3154 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_ERROR, |
3155 | 0, GL_DEBUG_SEVERITY_MEDIUM, "Error: Failed to acquire OpenGL image textures"); |
25ef750e |
3156 | } |
3157 | |
1d865689 |
3158 | glDisable (GL_BLEND); |
3a9b5dc8 |
3159 | |
3160 | const Standard_Boolean aResult = runRaytraceShaders (theSizeX, |
3161 | theSizeY, |
3162 | theProjection, |
3163 | theReadDrawFbo, |
3164 | theGlContext); |
1d865689 |
3165 | |
91c60b57 |
3166 | if (!aResult) |
25ef750e |
3167 | { |
3b523c4c |
3168 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_ERROR, |
3169 | 0, GL_DEBUG_SEVERITY_MEDIUM, "Error: Failed to execute ray-tracing shaders"); |
91c60b57 |
3170 | } |
25ef750e |
3171 | |
91c60b57 |
3172 | if (!myRaytraceGeometry.ReleaseTextures (theGlContext)) |
3173 | { |
3b523c4c |
3174 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_ERROR, |
3175 | 0, GL_DEBUG_SEVERITY_MEDIUM, "Error: Failed to release OpenGL image textures"); |
25ef750e |
3176 | } |
3177 | |
189f85a3 |
3178 | myRaytraceScreenQuad.UnbindVertexAttrib (theGlContext, Graphic3d_TOA_POS); |
e276548b |
3179 | } |
3180 | |
e276548b |
3181 | return Standard_True; |
f8ae3605 |
3182 | } |