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1 | // Created on: 2015-02-20 |
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2 | // Created by: Denis BOGOLEPOV |
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3 | // Copyright (c) 2015 OPEN CASCADE SAS |
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4 | // |
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5 | // This file is part of Open CASCADE Technology software library. |
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6 | // |
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7 | // This library is free software; you can redistribute it and/or modify it under |
8 | // the terms of the GNU Lesser General Public License version 2.1 as published |
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9 | // by the Free Software Foundation, with special exception defined in the file |
10 | // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT |
11 | // distribution for complete text of the license and disclaimer of any warranty. |
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12 | // |
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13 | // Alternatively, this file may be used under the terms of Open CASCADE |
14 | // commercial license or contractual agreement. |
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15 | |
c357e426 |
16 | #include <OpenGl_View.hxx> |
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17 | |
c357e426 |
18 | #include <Graphic3d_TextureParams.hxx> |
b7cd4ba7 |
19 | #include <OpenGl_PrimitiveArray.hxx> |
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20 | #include <OpenGl_VertexBuffer.hxx> |
fc73a202 |
21 | #include <OSD_Protection.hxx> |
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22 | #include <OSD_File.hxx> |
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23 | |
24 | using namespace OpenGl_Raytrace; |
25 | |
26 | //! Use this macro to output ray-tracing debug info |
fc73a202 |
27 | // #define RAY_TRACE_PRINT_INFO |
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28 | |
29 | #ifdef RAY_TRACE_PRINT_INFO |
30 | #include <OSD_Timer.hxx> |
31 | #endif |
32 | |
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33 | // ======================================================================= |
189f85a3 |
34 | // function : updateRaytraceGeometry |
91c60b57 |
35 | // purpose : Updates 3D scene geometry for ray-tracing |
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36 | // ======================================================================= |
91c60b57 |
37 | Standard_Boolean OpenGl_View::updateRaytraceGeometry (const RaytraceUpdateMode theMode, |
38 | const Standard_Integer theViewId, |
39 | const Handle(OpenGl_Context)& theGlContext) |
e276548b |
40 | { |
91c60b57 |
41 | // In 'check' mode (OpenGl_GUM_CHECK) the scene geometry is analyzed for |
42 | // modifications. This is light-weight procedure performed on each frame |
84c71f29 |
43 | if (theMode == OpenGl_GUM_CHECK) |
e276548b |
44 | { |
189f85a3 |
45 | if (myLayerListState != myZLayers.ModificationState()) |
91c60b57 |
46 | { |
47 | return updateRaytraceGeometry (OpenGl_GUM_PREPARE, theViewId, theGlContext); |
48 | } |
49 | } |
84c71f29 |
50 | else if (theMode == OpenGl_GUM_PREPARE) |
51 | { |
52 | myRaytraceGeometry.ClearMaterials(); |
91c60b57 |
53 | |
84c71f29 |
54 | myArrayToTrianglesMap.clear(); |
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55 | |
56 | myIsRaytraceDataValid = Standard_False; |
57 | } |
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58 | |
59 | // The set of processed structures (reflected to ray-tracing) |
60 | // This set is used to remove out-of-date records from the |
61 | // hash map of structures |
62 | std::set<const OpenGl_Structure*> anElements; |
63 | |
91c60b57 |
64 | // Set to store all currently visible OpenGL primitive arrays |
65 | // applicable for ray-tracing |
8d3f219f |
66 | std::set<Standard_Size> anArrayIDs; |
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67 | |
189f85a3 |
68 | // Set to store all non-raytracable elements allowing tracking |
69 | // of changes in OpenGL scene (only for path tracing) |
70 | std::set<Standard_Integer> aNonRaytraceIDs; |
71 | |
91c60b57 |
72 | const OpenGl_Layer& aLayer = myZLayers.Layer (Graphic3d_ZLayerId_Default); |
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73 | |
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74 | if (aLayer.NbStructures() != 0) |
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75 | { |
9f112210 |
76 | const OpenGl_ArrayOfIndexedMapOfStructure& aStructArray = aLayer.ArrayOfStructures(); |
91c60b57 |
77 | |
68333c8f |
78 | for (Standard_Integer anIndex = 0; anIndex < aStructArray.Length(); ++anIndex) |
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79 | { |
9f112210 |
80 | for (OpenGl_IndexedMapOfStructure::Iterator aStructIt (aStructArray (anIndex)); aStructIt.More(); aStructIt.Next()) |
e276548b |
81 | { |
82 | const OpenGl_Structure* aStructure = aStructIt.Value(); |
83 | |
84c71f29 |
84 | if (theMode == OpenGl_GUM_CHECK) |
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85 | { |
91c60b57 |
86 | if (toUpdateStructure (aStructure)) |
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87 | { |
91c60b57 |
88 | return updateRaytraceGeometry (OpenGl_GUM_PREPARE, theViewId, theGlContext); |
e276548b |
89 | } |
189f85a3 |
90 | else if (aStructure->IsVisible() && myRaytraceParameters.GlobalIllumination) |
91 | { |
92 | aNonRaytraceIDs.insert (aStructure->highlight ? aStructure->Id : -aStructure->Id); |
93 | } |
e2da917a |
94 | } |
84c71f29 |
95 | else if (theMode == OpenGl_GUM_PREPARE) |
96 | { |
91c60b57 |
97 | if (!aStructure->IsRaytracable() || !aStructure->IsVisible()) |
a1954302 |
98 | { |
a272ed94 |
99 | continue; |
100 | } |
91c60b57 |
101 | else if (!aStructure->ViewAffinity.IsNull() && !aStructure->ViewAffinity->IsVisible (theViewId)) |
a272ed94 |
102 | { |
84c71f29 |
103 | continue; |
a1954302 |
104 | } |
84c71f29 |
105 | |
106 | for (OpenGl_Structure::GroupIterator aGroupIter (aStructure->DrawGroups()); aGroupIter.More(); aGroupIter.Next()) |
107 | { |
91c60b57 |
108 | // Extract OpenGL elements from the group (primitives arrays) |
84c71f29 |
109 | for (const OpenGl_ElementNode* aNode = aGroupIter.Value()->FirstNode(); aNode != NULL; aNode = aNode->next) |
110 | { |
111 | OpenGl_PrimitiveArray* aPrimArray = dynamic_cast<OpenGl_PrimitiveArray*> (aNode->elem); |
112 | |
113 | if (aPrimArray != NULL) |
114 | { |
8d3f219f |
115 | anArrayIDs.insert (aPrimArray->GetUID()); |
84c71f29 |
116 | } |
117 | } |
118 | } |
e2da917a |
119 | } |
91c60b57 |
120 | else if (theMode == OpenGl_GUM_REBUILD) |
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121 | { |
122 | if (!aStructure->IsRaytracable()) |
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123 | { |
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124 | continue; |
91c60b57 |
125 | } |
126 | else if (addRaytraceStructure (aStructure, theGlContext)) |
127 | { |
128 | anElements.insert (aStructure); // structure was processed |
129 | } |
e276548b |
130 | } |
131 | } |
132 | } |
133 | } |
134 | |
84c71f29 |
135 | if (theMode == OpenGl_GUM_PREPARE) |
136 | { |
25ef750e |
137 | BVH_ObjectSet<Standard_ShortReal, 3>::BVH_ObjectList anUnchangedObjects; |
84c71f29 |
138 | |
91c60b57 |
139 | // Filter out unchanged objects so only their transformations and materials |
140 | // will be updated (and newly added objects will be processed from scratch) |
141 | for (Standard_Integer anObjIdx = 0; anObjIdx < myRaytraceGeometry.Size(); ++anObjIdx) |
84c71f29 |
142 | { |
143 | OpenGl_TriangleSet* aTriangleSet = dynamic_cast<OpenGl_TriangleSet*> ( |
91c60b57 |
144 | myRaytraceGeometry.Objects().ChangeValue (anObjIdx).operator->()); |
84c71f29 |
145 | |
91c60b57 |
146 | if (aTriangleSet == NULL) |
84c71f29 |
147 | { |
91c60b57 |
148 | continue; |
149 | } |
150 | |
151 | if (anArrayIDs.find (aTriangleSet->AssociatedPArrayID()) != anArrayIDs.end()) |
152 | { |
153 | anUnchangedObjects.Append (myRaytraceGeometry.Objects().Value (anObjIdx)); |
84c71f29 |
154 | |
8d3f219f |
155 | myArrayToTrianglesMap[aTriangleSet->AssociatedPArrayID()] = aTriangleSet; |
84c71f29 |
156 | } |
157 | } |
158 | |
159 | myRaytraceGeometry.Objects() = anUnchangedObjects; |
160 | |
91c60b57 |
161 | return updateRaytraceGeometry (OpenGl_GUM_REBUILD, theViewId, theGlContext); |
84c71f29 |
162 | } |
91c60b57 |
163 | else if (theMode == OpenGl_GUM_REBUILD) |
e276548b |
164 | { |
91c60b57 |
165 | // Actualize the hash map of structures - remove out-of-date records |
d4aaad5b |
166 | std::map<const OpenGl_Structure*, StructState>::iterator anIter = myStructureStates.begin(); |
e276548b |
167 | |
168 | while (anIter != myStructureStates.end()) |
169 | { |
170 | if (anElements.find (anIter->first) == anElements.end()) |
171 | { |
172 | myStructureStates.erase (anIter++); |
173 | } |
174 | else |
175 | { |
176 | ++anIter; |
177 | } |
178 | } |
179 | |
180 | // Actualize OpenGL layer list state |
189f85a3 |
181 | myLayerListState = myZLayers.ModificationState(); |
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182 | |
91c60b57 |
183 | // Rebuild two-level acceleration structure |
265d4508 |
184 | myRaytraceGeometry.ProcessAcceleration(); |
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185 | |
91c60b57 |
186 | myRaytraceSceneRadius = 2.f /* scale factor */ * std::max ( |
187 | myRaytraceGeometry.Box().CornerMin().cwiseAbs().maxComp(), |
188 | myRaytraceGeometry.Box().CornerMax().cwiseAbs().maxComp()); |
e276548b |
189 | |
25ef750e |
190 | const BVH_Vec3f aSize = myRaytraceGeometry.Box().Size(); |
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191 | |
91c60b57 |
192 | myRaytraceSceneEpsilon = Max (1.0e-6f, 1.0e-4f * aSize.Modulus()); |
fc73a202 |
193 | |
91c60b57 |
194 | return uploadRaytraceData (theGlContext); |
e276548b |
195 | } |
196 | |
189f85a3 |
197 | if (myRaytraceParameters.GlobalIllumination) |
198 | { |
199 | Standard_Boolean toRestart = |
200 | aNonRaytraceIDs.size() != myNonRaytraceStructureIDs.size(); |
201 | |
202 | for (std::set<Standard_Integer>::iterator anID = aNonRaytraceIDs.begin(); anID != aNonRaytraceIDs.end() && !toRestart; ++anID) |
203 | { |
204 | if (myNonRaytraceStructureIDs.find (*anID) == myNonRaytraceStructureIDs.end()) |
205 | { |
206 | toRestart = Standard_True; |
207 | } |
208 | } |
209 | |
210 | if (toRestart) |
211 | myAccumFrames = 0; |
212 | |
213 | myNonRaytraceStructureIDs = aNonRaytraceIDs; |
214 | } |
215 | |
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216 | return Standard_True; |
217 | } |
218 | |
219 | // ======================================================================= |
189f85a3 |
220 | // function : toUpdateStructure |
e2da917a |
221 | // purpose : Checks to see if the structure is modified |
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222 | // ======================================================================= |
91c60b57 |
223 | Standard_Boolean OpenGl_View::toUpdateStructure (const OpenGl_Structure* theStructure) |
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224 | { |
225 | if (!theStructure->IsRaytracable()) |
226 | { |
e276548b |
227 | if (theStructure->ModificationState() > 0) |
228 | { |
229 | theStructure->ResetModificationState(); |
91c60b57 |
230 | |
231 | return Standard_True; // ray-trace element was removed - need to rebuild |
e276548b |
232 | } |
233 | |
91c60b57 |
234 | return Standard_False; // did not contain ray-trace elements |
e276548b |
235 | } |
236 | |
d4aaad5b |
237 | std::map<const OpenGl_Structure*, StructState>::iterator aStructState = myStructureStates.find (theStructure); |
e276548b |
238 | |
d4aaad5b |
239 | if (aStructState == myStructureStates.end() || aStructState->second.StructureState != theStructure->ModificationState()) |
91c60b57 |
240 | { |
d4aaad5b |
241 | return Standard_True; |
242 | } |
243 | else if (theStructure->InstancedStructure() != NULL) |
244 | { |
245 | return aStructState->second.InstancedState != theStructure->InstancedStructure()->ModificationState(); |
91c60b57 |
246 | } |
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247 | |
d4aaad5b |
248 | return Standard_False; |
e276548b |
249 | } |
250 | |
25ef750e |
251 | // ======================================================================= |
189f85a3 |
252 | // function : buildTextureTransform |
25ef750e |
253 | // purpose : Constructs texture transformation matrix |
254 | // ======================================================================= |
189f85a3 |
255 | void buildTextureTransform (const Handle(Graphic3d_TextureParams)& theParams, BVH_Mat4f& theMatrix) |
25ef750e |
256 | { |
257 | theMatrix.InitIdentity(); |
258 | |
259 | // Apply scaling |
260 | const Graphic3d_Vec2& aScale = theParams->Scale(); |
261 | |
262 | theMatrix.ChangeValue (0, 0) *= aScale.x(); |
263 | theMatrix.ChangeValue (1, 0) *= aScale.x(); |
264 | theMatrix.ChangeValue (2, 0) *= aScale.x(); |
265 | theMatrix.ChangeValue (3, 0) *= aScale.x(); |
266 | |
267 | theMatrix.ChangeValue (0, 1) *= aScale.y(); |
268 | theMatrix.ChangeValue (1, 1) *= aScale.y(); |
269 | theMatrix.ChangeValue (2, 1) *= aScale.y(); |
270 | theMatrix.ChangeValue (3, 1) *= aScale.y(); |
271 | |
272 | // Apply translation |
273 | const Graphic3d_Vec2 aTrans = -theParams->Translation(); |
274 | |
275 | theMatrix.ChangeValue (0, 3) = theMatrix.GetValue (0, 0) * aTrans.x() + |
276 | theMatrix.GetValue (0, 1) * aTrans.y(); |
277 | |
278 | theMatrix.ChangeValue (1, 3) = theMatrix.GetValue (1, 0) * aTrans.x() + |
279 | theMatrix.GetValue (1, 1) * aTrans.y(); |
280 | |
281 | theMatrix.ChangeValue (2, 3) = theMatrix.GetValue (2, 0) * aTrans.x() + |
282 | theMatrix.GetValue (2, 1) * aTrans.y(); |
283 | |
284 | // Apply rotation |
285 | const Standard_ShortReal aSin = std::sin ( |
286 | -theParams->Rotation() * static_cast<Standard_ShortReal> (M_PI / 180.0)); |
287 | const Standard_ShortReal aCos = std::cos ( |
288 | -theParams->Rotation() * static_cast<Standard_ShortReal> (M_PI / 180.0)); |
289 | |
290 | BVH_Mat4f aRotationMat; |
291 | aRotationMat.SetValue (0, 0, aCos); |
292 | aRotationMat.SetValue (1, 1, aCos); |
293 | aRotationMat.SetValue (0, 1, -aSin); |
294 | aRotationMat.SetValue (1, 0, aSin); |
295 | |
296 | theMatrix = theMatrix * aRotationMat; |
297 | } |
298 | |
e276548b |
299 | // ======================================================================= |
189f85a3 |
300 | // function : convertMaterial |
e276548b |
301 | // purpose : Creates ray-tracing material properties |
302 | // ======================================================================= |
91c60b57 |
303 | OpenGl_RaytraceMaterial OpenGl_View::convertMaterial (const OpenGl_AspectFace* theAspect, |
304 | const Handle(OpenGl_Context)& theGlContext) |
e276548b |
305 | { |
91c60b57 |
306 | OpenGl_RaytraceMaterial theMaterial; |
25ef750e |
307 | |
91c60b57 |
308 | const OPENGL_SURF_PROP& aProperties = theAspect->IntFront(); |
25ef750e |
309 | |
91c60b57 |
310 | theMaterial.Ambient = BVH_Vec4f ( |
311 | (aProperties.isphysic ? aProperties.ambcol.rgb[0] : aProperties.matcol.rgb[0]) * aProperties.amb, |
312 | (aProperties.isphysic ? aProperties.ambcol.rgb[1] : aProperties.matcol.rgb[1]) * aProperties.amb, |
313 | (aProperties.isphysic ? aProperties.ambcol.rgb[2] : aProperties.matcol.rgb[2]) * aProperties.amb, |
314 | 1.f); |
25ef750e |
315 | |
91c60b57 |
316 | theMaterial.Diffuse = BVH_Vec4f ( |
317 | (aProperties.isphysic ? aProperties.difcol.rgb[0] : aProperties.matcol.rgb[0]) * aProperties.diff, |
318 | (aProperties.isphysic ? aProperties.difcol.rgb[1] : aProperties.matcol.rgb[1]) * aProperties.diff, |
319 | (aProperties.isphysic ? aProperties.difcol.rgb[2] : aProperties.matcol.rgb[2]) * aProperties.diff, |
320 | -1.f /* no texture */); |
25ef750e |
321 | |
322 | theMaterial.Specular = BVH_Vec4f ( |
323 | (aProperties.isphysic ? aProperties.speccol.rgb[0] : 1.f) * aProperties.spec, |
324 | (aProperties.isphysic ? aProperties.speccol.rgb[1] : 1.f) * aProperties.spec, |
325 | (aProperties.isphysic ? aProperties.speccol.rgb[2] : 1.f) * aProperties.spec, |
326 | aProperties.shine); |
327 | |
91c60b57 |
328 | theMaterial.Emission = BVH_Vec4f ( |
329 | (aProperties.isphysic ? aProperties.emscol.rgb[0] : aProperties.matcol.rgb[0]) * aProperties.emsv, |
330 | (aProperties.isphysic ? aProperties.emscol.rgb[1] : aProperties.matcol.rgb[1]) * aProperties.emsv, |
331 | (aProperties.isphysic ? aProperties.emscol.rgb[2] : aProperties.matcol.rgb[2]) * aProperties.emsv, |
332 | 1.f); |
e276548b |
333 | |
91c60b57 |
334 | theMaterial.Transparency = BVH_Vec4f (aProperties.trans, |
25ef750e |
335 | 1.f - aProperties.trans, |
336 | aProperties.index == 0 ? 1.f : aProperties.index, |
337 | aProperties.index == 0 ? 1.f : 1.f / aProperties.index); |
e276548b |
338 | |
25ef750e |
339 | const Standard_ShortReal aMaxRefl = Max (theMaterial.Diffuse.x() + theMaterial.Specular.x(), |
340 | Max (theMaterial.Diffuse.y() + theMaterial.Specular.y(), |
341 | theMaterial.Diffuse.z() + theMaterial.Specular.z())); |
e276548b |
342 | |
25ef750e |
343 | const Standard_ShortReal aReflectionScale = 0.75f / aMaxRefl; |
344 | |
345 | theMaterial.Reflection = BVH_Vec4f ( |
346 | aProperties.speccol.rgb[0] * aProperties.spec * aReflectionScale, |
347 | aProperties.speccol.rgb[1] * aProperties.spec * aReflectionScale, |
348 | aProperties.speccol.rgb[2] * aProperties.spec * aReflectionScale, |
349 | 0.f); |
350 | |
189f85a3 |
351 | // Serialize physically-based material properties |
352 | const Graphic3d_BSDF& aBSDF = aProperties.BSDF; |
353 | |
354 | theMaterial.BSDF.Le = BVH_Vec4f (aBSDF.Le, 0.f); |
355 | theMaterial.BSDF.Kd = BVH_Vec4f (aBSDF.Kd, -1.f /* no tex */); |
356 | theMaterial.BSDF.Kr = BVH_Vec4f (aBSDF.Kr, 0.f); |
357 | theMaterial.BSDF.Kt = BVH_Vec4f (aBSDF.Kt, 0.f); |
358 | theMaterial.BSDF.Ks = BVH_Vec4f (aBSDF.Ks, aBSDF.Roughness); |
359 | |
360 | theMaterial.BSDF.Fresnel = aBSDF.Fresnel.Serialize(); |
361 | |
362 | theMaterial.BSDF.Absorption = BVH_Vec4f (aBSDF.AbsorptionColor, |
363 | aBSDF.AbsorptionCoeff); |
364 | |
365 | // Handle material textures |
25ef750e |
366 | if (theAspect->DoTextureMap()) |
367 | { |
91c60b57 |
368 | if (theGlContext->arbTexBindless != NULL) |
25ef750e |
369 | { |
189f85a3 |
370 | buildTextureTransform (theAspect->TextureParams(), theMaterial.TextureTransform); |
91c60b57 |
371 | |
189f85a3 |
372 | // write texture ID to diffuse w-component |
373 | theMaterial.Diffuse.w() = theMaterial.BSDF.Kd.w() = |
374 | static_cast<Standard_ShortReal> (myRaytraceGeometry.AddTexture (theAspect->TextureRes (theGlContext))); |
25ef750e |
375 | } |
376 | else if (!myIsRaytraceWarnTextures) |
377 | { |
91c60b57 |
378 | const TCollection_ExtendedString aWarnMessage = |
379 | "Warning: texturing in Ray-Trace requires GL_ARB_bindless_texture extension which is missing. " |
380 | "Please try to update graphics card driver. At the moment textures will be ignored."; |
381 | |
3b523c4c |
382 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION, |
383 | GL_DEBUG_TYPE_PORTABILITY, 0, GL_DEBUG_SEVERITY_HIGH, aWarnMessage); |
91c60b57 |
384 | |
25ef750e |
385 | myIsRaytraceWarnTextures = Standard_True; |
386 | } |
387 | } |
e276548b |
388 | |
91c60b57 |
389 | return theMaterial; |
e276548b |
390 | } |
391 | |
392 | // ======================================================================= |
189f85a3 |
393 | // function : addRaytraceStructure |
e276548b |
394 | // purpose : Adds OpenGL structure to ray-traced scene geometry |
395 | // ======================================================================= |
91c60b57 |
396 | Standard_Boolean OpenGl_View::addRaytraceStructure (const OpenGl_Structure* theStructure, |
397 | const Handle(OpenGl_Context)& theGlContext) |
e276548b |
398 | { |
e276548b |
399 | if (!theStructure->IsVisible()) |
400 | { |
d4aaad5b |
401 | myStructureStates[theStructure] = StructState (theStructure); |
91c60b57 |
402 | |
e276548b |
403 | return Standard_True; |
404 | } |
405 | |
406 | // Get structure material |
8c820969 |
407 | OpenGl_RaytraceMaterial aStructMaterial; |
e276548b |
408 | |
409 | if (theStructure->AspectFace() != NULL) |
410 | { |
8c820969 |
411 | aStructMaterial = convertMaterial (theStructure->AspectFace(), theGlContext); |
e276548b |
412 | } |
413 | |
6bd94e0d |
414 | Standard_Boolean aResult = addRaytraceGroups (theStructure, aStructMaterial, &theStructure->Transformation, theGlContext); |
0717ddc1 |
415 | |
416 | // Process all connected OpenGL structures |
d4aaad5b |
417 | const OpenGl_Structure* anInstanced = theStructure->InstancedStructure(); |
418 | |
419 | if (anInstanced != NULL && anInstanced->IsRaytracable()) |
0717ddc1 |
420 | { |
6bd94e0d |
421 | aResult &= addRaytraceGroups (anInstanced, aStructMaterial, &theStructure->Transformation, theGlContext); |
0717ddc1 |
422 | } |
423 | |
d4aaad5b |
424 | myStructureStates[theStructure] = StructState (theStructure); |
91c60b57 |
425 | |
426 | return aResult; |
0717ddc1 |
427 | } |
428 | |
429 | // ======================================================================= |
189f85a3 |
430 | // function : addRaytraceGroups |
0717ddc1 |
431 | // purpose : Adds OpenGL groups to ray-traced scene geometry |
432 | // ======================================================================= |
8c820969 |
433 | Standard_Boolean OpenGl_View::addRaytraceGroups (const OpenGl_Structure* theStructure, |
434 | const OpenGl_RaytraceMaterial& theStructMat, |
6bd94e0d |
435 | const Graphic3d_Mat4* theTransform, |
8c820969 |
436 | const Handle(OpenGl_Context)& theGlContext) |
0717ddc1 |
437 | { |
b64d84be |
438 | for (OpenGl_Structure::GroupIterator aGroupIter (theStructure->DrawGroups()); aGroupIter.More(); aGroupIter.Next()) |
e276548b |
439 | { |
440 | // Get group material |
8c820969 |
441 | OpenGl_RaytraceMaterial aGroupMaterial; |
b64d84be |
442 | if (aGroupIter.Value()->AspectFace() != NULL) |
e276548b |
443 | { |
8c820969 |
444 | aGroupMaterial = convertMaterial ( |
91c60b57 |
445 | aGroupIter.Value()->AspectFace(), theGlContext); |
e276548b |
446 | } |
447 | |
8c820969 |
448 | Standard_Integer aMatID = static_cast<Standard_Integer> (myRaytraceGeometry.Materials.size()); |
e276548b |
449 | |
8c820969 |
450 | // Use group material if available, otherwise use structure material |
451 | myRaytraceGeometry.Materials.push_back ( |
452 | aGroupIter.Value()->AspectFace() != NULL ? aGroupMaterial : theStructMat); |
e276548b |
453 | |
265d4508 |
454 | // Add OpenGL elements from group (extract primitives arrays and aspects) |
b64d84be |
455 | for (const OpenGl_ElementNode* aNode = aGroupIter.Value()->FirstNode(); aNode != NULL; aNode = aNode->next) |
e276548b |
456 | { |
5322131b |
457 | OpenGl_AspectFace* anAspect = dynamic_cast<OpenGl_AspectFace*> (aNode->elem); |
91c60b57 |
458 | |
5322131b |
459 | if (anAspect != NULL) |
e276548b |
460 | { |
5322131b |
461 | aMatID = static_cast<Standard_Integer> (myRaytraceGeometry.Materials.size()); |
e276548b |
462 | |
91c60b57 |
463 | OpenGl_RaytraceMaterial aMaterial = convertMaterial (anAspect, theGlContext); |
e276548b |
464 | |
5322131b |
465 | myRaytraceGeometry.Materials.push_back (aMaterial); |
e276548b |
466 | } |
5322131b |
467 | else |
e276548b |
468 | { |
469 | OpenGl_PrimitiveArray* aPrimArray = dynamic_cast<OpenGl_PrimitiveArray*> (aNode->elem); |
84c71f29 |
470 | |
e276548b |
471 | if (aPrimArray != NULL) |
472 | { |
8d3f219f |
473 | std::map<Standard_Size, OpenGl_TriangleSet*>::iterator aSetIter = myArrayToTrianglesMap.find (aPrimArray->GetUID()); |
474 | |
84c71f29 |
475 | if (aSetIter != myArrayToTrianglesMap.end()) |
476 | { |
477 | OpenGl_TriangleSet* aSet = aSetIter->second; |
25ef750e |
478 | |
84c71f29 |
479 | BVH_Transform<Standard_ShortReal, 4>* aTransform = new BVH_Transform<Standard_ShortReal, 4>(); |
480 | |
481 | if (theTransform != NULL) |
482 | { |
6bd94e0d |
483 | aTransform->SetTransform (*theTransform); |
84c71f29 |
484 | } |
91c60b57 |
485 | |
84c71f29 |
486 | aSet->SetProperties (aTransform); |
487 | |
25ef750e |
488 | if (aSet->MaterialIndex() != OpenGl_TriangleSet::INVALID_MATERIAL && aSet->MaterialIndex() != aMatID) |
84c71f29 |
489 | { |
490 | aSet->SetMaterialIndex (aMatID); |
491 | } |
492 | } |
493 | else |
494 | { |
25ef750e |
495 | NCollection_Handle<BVH_Object<Standard_ShortReal, 3> > aSet = |
91c60b57 |
496 | addRaytracePrimitiveArray (aPrimArray, aMatID, 0); |
265d4508 |
497 | |
84c71f29 |
498 | if (!aSet.IsNull()) |
499 | { |
500 | BVH_Transform<Standard_ShortReal, 4>* aTransform = new BVH_Transform<Standard_ShortReal, 4>; |
501 | |
502 | if (theTransform != NULL) |
503 | { |
6bd94e0d |
504 | aTransform->SetTransform (*theTransform); |
84c71f29 |
505 | } |
506 | |
507 | aSet->SetProperties (aTransform); |
508 | |
509 | myRaytraceGeometry.Objects().Append (aSet); |
510 | } |
511 | } |
e276548b |
512 | } |
513 | } |
514 | } |
e276548b |
515 | } |
516 | |
e276548b |
517 | return Standard_True; |
518 | } |
519 | |
520 | // ======================================================================= |
189f85a3 |
521 | // function : addRaytracePrimitiveArray |
e276548b |
522 | // purpose : Adds OpenGL primitive array to ray-traced scene geometry |
523 | // ======================================================================= |
91c60b57 |
524 | OpenGl_TriangleSet* OpenGl_View::addRaytracePrimitiveArray (const OpenGl_PrimitiveArray* theArray, |
525 | const Standard_Integer theMaterial, |
526 | const OpenGl_Mat4* theTransform) |
e276548b |
527 | { |
91c60b57 |
528 | const Handle(Graphic3d_BoundBuffer)& aBounds = theArray->Bounds(); |
871fa103 |
529 | const Handle(Graphic3d_IndexBuffer)& anIndices = theArray->Indices(); |
530 | const Handle(Graphic3d_Buffer)& anAttribs = theArray->Attributes(); |
91c60b57 |
531 | |
871fa103 |
532 | if (theArray->DrawMode() < GL_TRIANGLES |
91c60b57 |
533 | #ifndef GL_ES_VERSION_2_0 |
871fa103 |
534 | || theArray->DrawMode() > GL_POLYGON |
ca3c13d1 |
535 | #else |
536 | || theArray->DrawMode() > GL_TRIANGLE_FAN |
537 | #endif |
871fa103 |
538 | || anAttribs.IsNull()) |
e276548b |
539 | { |
265d4508 |
540 | return NULL; |
e276548b |
541 | } |
542 | |
25ef750e |
543 | OpenGl_Mat4 aNormalMatrix; |
544 | |
545 | if (theTransform != NULL) |
546 | { |
547 | Standard_ASSERT_RETURN (theTransform->Inverted (aNormalMatrix), |
548 | "Error: Failed to compute normal transformation matrix", NULL); |
549 | |
550 | aNormalMatrix.Transpose(); |
551 | } |
552 | |
8d3f219f |
553 | OpenGl_TriangleSet* aSet = new OpenGl_TriangleSet (theArray->GetUID()); |
e276548b |
554 | { |
871fa103 |
555 | aSet->Vertices.reserve (anAttribs->NbElements); |
91c60b57 |
556 | aSet->Normals.reserve (anAttribs->NbElements); |
557 | aSet->TexCrds.reserve (anAttribs->NbElements); |
25ef750e |
558 | |
871fa103 |
559 | const size_t aVertFrom = aSet->Vertices.size(); |
91c60b57 |
560 | |
871fa103 |
561 | for (Standard_Integer anAttribIter = 0; anAttribIter < anAttribs->NbAttributes; ++anAttribIter) |
265d4508 |
562 | { |
871fa103 |
563 | const Graphic3d_Attribute& anAttrib = anAttribs->Attribute (anAttribIter); |
564 | const size_t anOffset = anAttribs->AttributeOffset (anAttribIter); |
565 | if (anAttrib.Id == Graphic3d_TOA_POS) |
566 | { |
567 | if (anAttrib.DataType == Graphic3d_TOD_VEC3 |
568 | || anAttrib.DataType == Graphic3d_TOD_VEC4) |
569 | { |
570 | for (Standard_Integer aVertIter = 0; aVertIter < anAttribs->NbElements; ++aVertIter) |
571 | { |
25ef750e |
572 | aSet->Vertices.push_back ( |
91c60b57 |
573 | *reinterpret_cast<const Graphic3d_Vec3*> (anAttribs->value (aVertIter) + anOffset)); |
871fa103 |
574 | } |
575 | } |
576 | else if (anAttrib.DataType == Graphic3d_TOD_VEC2) |
577 | { |
578 | for (Standard_Integer aVertIter = 0; aVertIter < anAttribs->NbElements; ++aVertIter) |
579 | { |
91c60b57 |
580 | const Standard_ShortReal* aCoords = |
581 | reinterpret_cast<const Standard_ShortReal*> (anAttribs->value (aVertIter) + anOffset); |
582 | |
583 | aSet->Vertices.push_back (BVH_Vec3f (aCoords[0], aCoords[1], 0.0f)); |
871fa103 |
584 | } |
585 | } |
586 | } |
587 | else if (anAttrib.Id == Graphic3d_TOA_NORM) |
588 | { |
589 | if (anAttrib.DataType == Graphic3d_TOD_VEC3 |
590 | || anAttrib.DataType == Graphic3d_TOD_VEC4) |
591 | { |
592 | for (Standard_Integer aVertIter = 0; aVertIter < anAttribs->NbElements; ++aVertIter) |
593 | { |
25ef750e |
594 | aSet->Normals.push_back ( |
91c60b57 |
595 | *reinterpret_cast<const Graphic3d_Vec3*> (anAttribs->value (aVertIter) + anOffset)); |
25ef750e |
596 | } |
597 | } |
598 | } |
599 | else if (anAttrib.Id == Graphic3d_TOA_UV) |
600 | { |
601 | if (anAttrib.DataType == Graphic3d_TOD_VEC2) |
602 | { |
603 | for (Standard_Integer aVertIter = 0; aVertIter < anAttribs->NbElements; ++aVertIter) |
604 | { |
605 | aSet->TexCrds.push_back ( |
91c60b57 |
606 | *reinterpret_cast<const Graphic3d_Vec2*> (anAttribs->value (aVertIter) + anOffset)); |
871fa103 |
607 | } |
608 | } |
609 | } |
265d4508 |
610 | } |
e276548b |
611 | |
871fa103 |
612 | if (aSet->Normals.size() != aSet->Vertices.size()) |
265d4508 |
613 | { |
871fa103 |
614 | for (Standard_Integer aVertIter = 0; aVertIter < anAttribs->NbElements; ++aVertIter) |
265d4508 |
615 | { |
25ef750e |
616 | aSet->Normals.push_back (BVH_Vec3f()); |
617 | } |
618 | } |
619 | |
620 | if (aSet->TexCrds.size() != aSet->Vertices.size()) |
621 | { |
622 | for (Standard_Integer aVertIter = 0; aVertIter < anAttribs->NbElements; ++aVertIter) |
623 | { |
624 | aSet->TexCrds.push_back (BVH_Vec2f()); |
265d4508 |
625 | } |
871fa103 |
626 | } |
e276548b |
627 | |
25ef750e |
628 | if (theTransform != NULL) |
871fa103 |
629 | { |
630 | for (size_t aVertIter = aVertFrom; aVertIter < aSet->Vertices.size(); ++aVertIter) |
631 | { |
25ef750e |
632 | BVH_Vec3f& aVertex = aSet->Vertices[aVertIter]; |
633 | |
91c60b57 |
634 | BVH_Vec4f aTransVertex = *theTransform * |
635 | BVH_Vec4f (aVertex.x(), aVertex.y(), aVertex.z(), 1.f); |
25ef750e |
636 | |
637 | aVertex = BVH_Vec3f (aTransVertex.x(), aTransVertex.y(), aTransVertex.z()); |
871fa103 |
638 | } |
639 | for (size_t aVertIter = aVertFrom; aVertIter < aSet->Normals.size(); ++aVertIter) |
640 | { |
25ef750e |
641 | BVH_Vec3f& aNormal = aSet->Normals[aVertIter]; |
642 | |
91c60b57 |
643 | BVH_Vec4f aTransNormal = aNormalMatrix * |
644 | BVH_Vec4f (aNormal.x(), aNormal.y(), aNormal.z(), 0.f); |
25ef750e |
645 | |
646 | aNormal = BVH_Vec3f (aTransNormal.x(), aTransNormal.y(), aTransNormal.z()); |
871fa103 |
647 | } |
e276548b |
648 | } |
649 | |
871fa103 |
650 | if (!aBounds.IsNull()) |
265d4508 |
651 | { |
91c60b57 |
652 | for (Standard_Integer aBound = 0, aBoundStart = 0; aBound < aBounds->NbBounds; ++aBound) |
265d4508 |
653 | { |
871fa103 |
654 | const Standard_Integer aVertNum = aBounds->Bounds[aBound]; |
e276548b |
655 | |
91c60b57 |
656 | if (!addRaytraceVertexIndices (*aSet, theMaterial, aVertNum, aBoundStart, *theArray)) |
265d4508 |
657 | { |
658 | delete aSet; |
659 | return NULL; |
660 | } |
661 | |
662 | aBoundStart += aVertNum; |
663 | } |
664 | } |
665 | else |
e276548b |
666 | { |
871fa103 |
667 | const Standard_Integer aVertNum = !anIndices.IsNull() ? anIndices->NbElements : anAttribs->NbElements; |
e276548b |
668 | |
91c60b57 |
669 | if (!addRaytraceVertexIndices (*aSet, theMaterial, aVertNum, 0, *theArray)) |
e276548b |
670 | { |
265d4508 |
671 | delete aSet; |
672 | return NULL; |
e276548b |
673 | } |
e276548b |
674 | } |
675 | } |
e276548b |
676 | |
265d4508 |
677 | if (aSet->Size() != 0) |
91c60b57 |
678 | { |
265d4508 |
679 | aSet->MarkDirty(); |
91c60b57 |
680 | } |
e276548b |
681 | |
265d4508 |
682 | return aSet; |
e276548b |
683 | } |
684 | |
685 | // ======================================================================= |
189f85a3 |
686 | // function : addRaytraceVertexIndices |
e276548b |
687 | // purpose : Adds vertex indices to ray-traced scene geometry |
688 | // ======================================================================= |
91c60b57 |
689 | Standard_Boolean OpenGl_View::addRaytraceVertexIndices (OpenGl_TriangleSet& theSet, |
690 | const Standard_Integer theMatID, |
691 | const Standard_Integer theCount, |
692 | const Standard_Integer theOffset, |
693 | const OpenGl_PrimitiveArray& theArray) |
e276548b |
694 | { |
871fa103 |
695 | switch (theArray.DrawMode()) |
e276548b |
696 | { |
91c60b57 |
697 | case GL_TRIANGLES: return addRaytraceTriangleArray (theSet, theMatID, theCount, theOffset, theArray.Indices()); |
698 | case GL_TRIANGLE_FAN: return addRaytraceTriangleFanArray (theSet, theMatID, theCount, theOffset, theArray.Indices()); |
699 | case GL_TRIANGLE_STRIP: return addRaytraceTriangleStripArray (theSet, theMatID, theCount, theOffset, theArray.Indices()); |
ca3c13d1 |
700 | #if !defined(GL_ES_VERSION_2_0) |
91c60b57 |
701 | case GL_QUAD_STRIP: return addRaytraceQuadrangleStripArray (theSet, theMatID, theCount, theOffset, theArray.Indices()); |
702 | case GL_QUADS: return addRaytraceQuadrangleArray (theSet, theMatID, theCount, theOffset, theArray.Indices()); |
703 | case GL_POLYGON: return addRaytracePolygonArray (theSet, theMatID, theCount, theOffset, theArray.Indices()); |
ca3c13d1 |
704 | #endif |
e276548b |
705 | } |
91c60b57 |
706 | |
871fa103 |
707 | return Standard_False; |
e276548b |
708 | } |
709 | |
710 | // ======================================================================= |
189f85a3 |
711 | // function : addRaytraceTriangleArray |
e276548b |
712 | // purpose : Adds OpenGL triangle array to ray-traced scene geometry |
713 | // ======================================================================= |
91c60b57 |
714 | Standard_Boolean OpenGl_View::addRaytraceTriangleArray (OpenGl_TriangleSet& theSet, |
715 | const Standard_Integer theMatID, |
716 | const Standard_Integer theCount, |
717 | const Standard_Integer theOffset, |
718 | const Handle(Graphic3d_IndexBuffer)& theIndices) |
e276548b |
719 | { |
265d4508 |
720 | if (theCount < 3) |
91c60b57 |
721 | { |
e276548b |
722 | return Standard_True; |
91c60b57 |
723 | } |
e276548b |
724 | |
871fa103 |
725 | theSet.Elements.reserve (theSet.Elements.size() + theCount / 3); |
265d4508 |
726 | |
871fa103 |
727 | if (!theIndices.IsNull()) |
e276548b |
728 | { |
265d4508 |
729 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 2; aVert += 3) |
e276548b |
730 | { |
871fa103 |
731 | theSet.Elements.push_back (BVH_Vec4i (theIndices->Index (aVert + 0), |
732 | theIndices->Index (aVert + 1), |
733 | theIndices->Index (aVert + 2), |
734 | theMatID)); |
e276548b |
735 | } |
736 | } |
737 | else |
738 | { |
265d4508 |
739 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 2; aVert += 3) |
e276548b |
740 | { |
91c60b57 |
741 | theSet.Elements.push_back (BVH_Vec4i (aVert + 0, aVert + 1, aVert + 2, theMatID)); |
e276548b |
742 | } |
743 | } |
744 | |
745 | return Standard_True; |
746 | } |
747 | |
748 | // ======================================================================= |
189f85a3 |
749 | // function : addRaytraceTriangleFanArray |
e276548b |
750 | // purpose : Adds OpenGL triangle fan array to ray-traced scene geometry |
751 | // ======================================================================= |
91c60b57 |
752 | Standard_Boolean OpenGl_View::addRaytraceTriangleFanArray (OpenGl_TriangleSet& theSet, |
753 | const Standard_Integer theMatID, |
754 | const Standard_Integer theCount, |
755 | const Standard_Integer theOffset, |
756 | const Handle(Graphic3d_IndexBuffer)& theIndices) |
e276548b |
757 | { |
265d4508 |
758 | if (theCount < 3) |
91c60b57 |
759 | { |
e276548b |
760 | return Standard_True; |
91c60b57 |
761 | } |
e276548b |
762 | |
871fa103 |
763 | theSet.Elements.reserve (theSet.Elements.size() + theCount - 2); |
265d4508 |
764 | |
871fa103 |
765 | if (!theIndices.IsNull()) |
e276548b |
766 | { |
265d4508 |
767 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 2; ++aVert) |
e276548b |
768 | { |
871fa103 |
769 | theSet.Elements.push_back (BVH_Vec4i (theIndices->Index (theOffset), |
770 | theIndices->Index (aVert + 1), |
771 | theIndices->Index (aVert + 2), |
772 | theMatID)); |
e276548b |
773 | } |
774 | } |
775 | else |
776 | { |
265d4508 |
777 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 2; ++aVert) |
e276548b |
778 | { |
871fa103 |
779 | theSet.Elements.push_back (BVH_Vec4i (theOffset, |
780 | aVert + 1, |
781 | aVert + 2, |
782 | theMatID)); |
e276548b |
783 | } |
784 | } |
785 | |
786 | return Standard_True; |
787 | } |
788 | |
789 | // ======================================================================= |
189f85a3 |
790 | // function : addRaytraceTriangleStripArray |
e276548b |
791 | // purpose : Adds OpenGL triangle strip array to ray-traced scene geometry |
792 | // ======================================================================= |
91c60b57 |
793 | Standard_Boolean OpenGl_View::addRaytraceTriangleStripArray (OpenGl_TriangleSet& theSet, |
794 | const Standard_Integer theMatID, |
795 | const Standard_Integer theCount, |
796 | const Standard_Integer theOffset, |
797 | const Handle(Graphic3d_IndexBuffer)& theIndices) |
e276548b |
798 | { |
265d4508 |
799 | if (theCount < 3) |
91c60b57 |
800 | { |
e276548b |
801 | return Standard_True; |
91c60b57 |
802 | } |
e276548b |
803 | |
871fa103 |
804 | theSet.Elements.reserve (theSet.Elements.size() + theCount - 2); |
265d4508 |
805 | |
871fa103 |
806 | if (!theIndices.IsNull()) |
e276548b |
807 | { |
265d4508 |
808 | for (Standard_Integer aVert = theOffset, aCW = 0; aVert < theOffset + theCount - 2; ++aVert, aCW = (aCW + 1) % 2) |
e276548b |
809 | { |
ad2a55b2 |
810 | theSet.Elements.push_back (BVH_Vec4i (theIndices->Index (aVert + (aCW ? 1 : 0)), |
811 | theIndices->Index (aVert + (aCW ? 0 : 1)), |
871fa103 |
812 | theIndices->Index (aVert + 2), |
813 | theMatID)); |
e276548b |
814 | } |
815 | } |
816 | else |
817 | { |
265d4508 |
818 | for (Standard_Integer aVert = theOffset, aCW = 0; aVert < theOffset + theCount - 2; ++aVert, aCW = (aCW + 1) % 2) |
e276548b |
819 | { |
ad2a55b2 |
820 | theSet.Elements.push_back (BVH_Vec4i (aVert + (aCW ? 1 : 0), |
821 | aVert + (aCW ? 0 : 1), |
871fa103 |
822 | aVert + 2, |
823 | theMatID)); |
e276548b |
824 | } |
825 | } |
826 | |
827 | return Standard_True; |
828 | } |
829 | |
830 | // ======================================================================= |
189f85a3 |
831 | // function : addRaytraceQuadrangleArray |
e276548b |
832 | // purpose : Adds OpenGL quad array to ray-traced scene geometry |
833 | // ======================================================================= |
91c60b57 |
834 | Standard_Boolean OpenGl_View::addRaytraceQuadrangleArray (OpenGl_TriangleSet& theSet, |
835 | const Standard_Integer theMatID, |
836 | const Standard_Integer theCount, |
837 | const Standard_Integer theOffset, |
838 | const Handle(Graphic3d_IndexBuffer)& theIndices) |
e276548b |
839 | { |
265d4508 |
840 | if (theCount < 4) |
91c60b57 |
841 | { |
e276548b |
842 | return Standard_True; |
91c60b57 |
843 | } |
e276548b |
844 | |
871fa103 |
845 | theSet.Elements.reserve (theSet.Elements.size() + theCount / 2); |
265d4508 |
846 | |
871fa103 |
847 | if (!theIndices.IsNull()) |
e276548b |
848 | { |
265d4508 |
849 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 3; aVert += 4) |
e276548b |
850 | { |
871fa103 |
851 | theSet.Elements.push_back (BVH_Vec4i (theIndices->Index (aVert + 0), |
852 | theIndices->Index (aVert + 1), |
853 | theIndices->Index (aVert + 2), |
854 | theMatID)); |
855 | theSet.Elements.push_back (BVH_Vec4i (theIndices->Index (aVert + 0), |
856 | theIndices->Index (aVert + 2), |
857 | theIndices->Index (aVert + 3), |
858 | theMatID)); |
e276548b |
859 | } |
860 | } |
861 | else |
862 | { |
265d4508 |
863 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 3; aVert += 4) |
e276548b |
864 | { |
871fa103 |
865 | theSet.Elements.push_back (BVH_Vec4i (aVert + 0, aVert + 1, aVert + 2, |
866 | theMatID)); |
867 | theSet.Elements.push_back (BVH_Vec4i (aVert + 0, aVert + 2, aVert + 3, |
868 | theMatID)); |
e276548b |
869 | } |
870 | } |
871 | |
872 | return Standard_True; |
873 | } |
874 | |
875 | // ======================================================================= |
189f85a3 |
876 | // function : addRaytraceQuadrangleStripArray |
e276548b |
877 | // purpose : Adds OpenGL quad strip array to ray-traced scene geometry |
878 | // ======================================================================= |
91c60b57 |
879 | Standard_Boolean OpenGl_View::addRaytraceQuadrangleStripArray (OpenGl_TriangleSet& theSet, |
880 | const Standard_Integer theMatID, |
881 | const Standard_Integer theCount, |
882 | const Standard_Integer theOffset, |
883 | const Handle(Graphic3d_IndexBuffer)& theIndices) |
e276548b |
884 | { |
265d4508 |
885 | if (theCount < 4) |
91c60b57 |
886 | { |
e276548b |
887 | return Standard_True; |
91c60b57 |
888 | } |
e276548b |
889 | |
871fa103 |
890 | theSet.Elements.reserve (theSet.Elements.size() + 2 * theCount - 6); |
265d4508 |
891 | |
871fa103 |
892 | if (!theIndices.IsNull()) |
e276548b |
893 | { |
265d4508 |
894 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 3; aVert += 2) |
e276548b |
895 | { |
871fa103 |
896 | theSet.Elements.push_back (BVH_Vec4i (theIndices->Index (aVert + 0), |
897 | theIndices->Index (aVert + 1), |
898 | theIndices->Index (aVert + 2), |
899 | theMatID)); |
900 | |
901 | theSet.Elements.push_back (BVH_Vec4i (theIndices->Index (aVert + 1), |
902 | theIndices->Index (aVert + 3), |
903 | theIndices->Index (aVert + 2), |
904 | theMatID)); |
e276548b |
905 | } |
906 | } |
907 | else |
908 | { |
265d4508 |
909 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 3; aVert += 2) |
e276548b |
910 | { |
871fa103 |
911 | theSet.Elements.push_back (BVH_Vec4i (aVert + 0, |
912 | aVert + 1, |
913 | aVert + 2, |
914 | theMatID)); |
915 | |
916 | theSet.Elements.push_back (BVH_Vec4i (aVert + 1, |
917 | aVert + 3, |
918 | aVert + 2, |
919 | theMatID)); |
e276548b |
920 | } |
921 | } |
922 | |
923 | return Standard_True; |
924 | } |
925 | |
926 | // ======================================================================= |
189f85a3 |
927 | // function : addRaytracePolygonArray |
e276548b |
928 | // purpose : Adds OpenGL polygon array to ray-traced scene geometry |
929 | // ======================================================================= |
91c60b57 |
930 | Standard_Boolean OpenGl_View::addRaytracePolygonArray (OpenGl_TriangleSet& theSet, |
931 | const Standard_Integer theMatID, |
932 | const Standard_Integer theCount, |
933 | const Standard_Integer theOffset, |
934 | const Handle(Graphic3d_IndexBuffer)& theIndices) |
e276548b |
935 | { |
265d4508 |
936 | if (theCount < 3) |
91c60b57 |
937 | { |
e276548b |
938 | return Standard_True; |
91c60b57 |
939 | } |
e276548b |
940 | |
871fa103 |
941 | theSet.Elements.reserve (theSet.Elements.size() + theCount - 2); |
265d4508 |
942 | |
871fa103 |
943 | if (!theIndices.IsNull()) |
e276548b |
944 | { |
265d4508 |
945 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 2; ++aVert) |
e276548b |
946 | { |
871fa103 |
947 | theSet.Elements.push_back (BVH_Vec4i (theIndices->Index (theOffset), |
948 | theIndices->Index (aVert + 1), |
949 | theIndices->Index (aVert + 2), |
950 | theMatID)); |
e276548b |
951 | } |
952 | } |
953 | else |
954 | { |
265d4508 |
955 | for (Standard_Integer aVert = theOffset; aVert < theOffset + theCount - 2; ++aVert) |
e276548b |
956 | { |
871fa103 |
957 | theSet.Elements.push_back (BVH_Vec4i (theOffset, |
958 | aVert + 1, |
959 | aVert + 2, |
960 | theMatID)); |
e276548b |
961 | } |
962 | } |
963 | |
964 | return Standard_True; |
965 | } |
966 | |
189f85a3 |
967 | const TCollection_AsciiString OpenGl_View::ShaderSource::EMPTY_PREFIX; |
968 | |
e276548b |
969 | // ======================================================================= |
fc73a202 |
970 | // function : Source |
971 | // purpose : Returns shader source combined with prefix |
e276548b |
972 | // ======================================================================= |
91c60b57 |
973 | TCollection_AsciiString OpenGl_View::ShaderSource::Source() const |
e276548b |
974 | { |
f8ae3605 |
975 | const TCollection_AsciiString aVersion = "#version 140"; |
e276548b |
976 | |
fc73a202 |
977 | if (myPrefix.IsEmpty()) |
e276548b |
978 | { |
fc73a202 |
979 | return aVersion + "\n" + mySource; |
e276548b |
980 | } |
981 | |
fc73a202 |
982 | return aVersion + "\n" + myPrefix + "\n" + mySource; |
e276548b |
983 | } |
984 | |
985 | // ======================================================================= |
fc73a202 |
986 | // function : Load |
987 | // purpose : Loads shader source from specified files |
e276548b |
988 | // ======================================================================= |
73722cc9 |
989 | Standard_Boolean OpenGl_View::ShaderSource::Load (const TCollection_AsciiString* theFileNames, |
990 | const TCollection_AsciiString& thePrefix) |
e276548b |
991 | { |
73722cc9 |
992 | myError.Clear(); |
fc73a202 |
993 | mySource.Clear(); |
73722cc9 |
994 | TCollection_AsciiString aMissingFiles; |
189f85a3 |
995 | for (Standard_Integer anIndex = 0; !theFileNames[anIndex].IsEmpty(); ++anIndex) |
fc73a202 |
996 | { |
997 | OSD_File aFile (theFileNames[anIndex]); |
73722cc9 |
998 | if (aFile.Exists()) |
999 | { |
1000 | aFile.Open (OSD_ReadOnly, OSD_Protection()); |
1001 | } |
1002 | if (!aFile.IsOpen()) |
1003 | { |
1004 | if (!aMissingFiles.IsEmpty()) |
1005 | { |
1006 | aMissingFiles += ", "; |
1007 | } |
1008 | aMissingFiles += TCollection_AsciiString("'") + theFileNames[anIndex] + "'"; |
1009 | continue; |
1010 | } |
1011 | else if (!aMissingFiles.IsEmpty()) |
1012 | { |
1013 | aFile.Close(); |
1014 | continue; |
1015 | } |
265d4508 |
1016 | |
fc73a202 |
1017 | TCollection_AsciiString aSource; |
fc73a202 |
1018 | aFile.Read (aSource, (Standard_Integer) aFile.Size()); |
fc73a202 |
1019 | if (!aSource.IsEmpty()) |
1020 | { |
1021 | mySource += TCollection_AsciiString ("\n") + aSource; |
1022 | } |
fc73a202 |
1023 | aFile.Close(); |
68333c8f |
1024 | } |
189f85a3 |
1025 | |
1026 | myPrefix = thePrefix; |
73722cc9 |
1027 | if (!aMissingFiles.IsEmpty()) |
1028 | { |
1029 | myError = TCollection_AsciiString("Shader files ") + aMissingFiles + " are missing or inaccessible"; |
1030 | return Standard_False; |
1031 | } |
1032 | return Standard_True; |
e276548b |
1033 | } |
1034 | |
1035 | // ======================================================================= |
189f85a3 |
1036 | // function : generateShaderPrefix |
91c60b57 |
1037 | // purpose : Generates shader prefix based on current ray-tracing options |
1038 | // ======================================================================= |
1039 | TCollection_AsciiString OpenGl_View::generateShaderPrefix (const Handle(OpenGl_Context)& theGlContext) const |
1040 | { |
1041 | TCollection_AsciiString aPrefixString = |
1042 | TCollection_AsciiString ("#define STACK_SIZE ") + TCollection_AsciiString (myRaytraceParameters.StackSize) + "\n" + |
1043 | TCollection_AsciiString ("#define NB_BOUNCES ") + TCollection_AsciiString (myRaytraceParameters.NbBounces); |
1044 | |
1045 | if (myRaytraceParameters.TransparentShadows) |
1046 | { |
1047 | aPrefixString += TCollection_AsciiString ("\n#define TRANSPARENT_SHADOWS"); |
1048 | } |
1049 | |
f483f2ed |
1050 | // If OpenGL driver supports bindless textures and texturing |
1051 | // is actually used, activate texturing in ray-tracing mode |
1052 | if (myRaytraceParameters.UseBindlessTextures && theGlContext->arbTexBindless != NULL) |
91c60b57 |
1053 | { |
1054 | aPrefixString += TCollection_AsciiString ("\n#define USE_TEXTURES") + |
1055 | TCollection_AsciiString ("\n#define MAX_TEX_NUMBER ") + TCollection_AsciiString (OpenGl_RaytraceGeometry::MAX_TEX_NUMBER); |
1056 | } |
1057 | |
189f85a3 |
1058 | if (myRaytraceParameters.GlobalIllumination) |
1059 | { |
1060 | aPrefixString += TCollection_AsciiString ("\n#define PATH_TRACING"); |
1061 | } |
1062 | |
91c60b57 |
1063 | return aPrefixString; |
1064 | } |
1065 | |
1066 | // ======================================================================= |
189f85a3 |
1067 | // function : safeFailBack |
91c60b57 |
1068 | // purpose : Performs safe exit when shaders initialization fails |
1069 | // ======================================================================= |
1070 | Standard_Boolean OpenGl_View::safeFailBack (const TCollection_ExtendedString& theMessage, |
1071 | const Handle(OpenGl_Context)& theGlContext) |
1072 | { |
3b523c4c |
1073 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION, |
1074 | GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, theMessage); |
91c60b57 |
1075 | |
1076 | myRaytraceInitStatus = OpenGl_RT_FAIL; |
1077 | |
1078 | releaseRaytraceResources (theGlContext); |
1079 | |
1080 | return Standard_False; |
1081 | } |
1082 | |
1083 | // ======================================================================= |
189f85a3 |
1084 | // function : initShader |
fc73a202 |
1085 | // purpose : Creates new shader object with specified source |
e276548b |
1086 | // ======================================================================= |
91c60b57 |
1087 | Handle(OpenGl_ShaderObject) OpenGl_View::initShader (const GLenum theType, |
1088 | const ShaderSource& theSource, |
1089 | const Handle(OpenGl_Context)& theGlContext) |
e276548b |
1090 | { |
fc73a202 |
1091 | Handle(OpenGl_ShaderObject) aShader = new OpenGl_ShaderObject (theType); |
e276548b |
1092 | |
91c60b57 |
1093 | if (!aShader->Create (theGlContext)) |
e276548b |
1094 | { |
07039714 |
1095 | const TCollection_ExtendedString aMessage = TCollection_ExtendedString ("Error: Failed to create ") + |
1096 | (theType == GL_VERTEX_SHADER ? "vertex" : "fragment") + " shader object"; |
1097 | |
3b523c4c |
1098 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION, |
1099 | GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, aMessage); |
e276548b |
1100 | |
91c60b57 |
1101 | aShader->Release (theGlContext.operator->()); |
e276548b |
1102 | |
fc73a202 |
1103 | return Handle(OpenGl_ShaderObject)(); |
e276548b |
1104 | } |
5322131b |
1105 | |
91c60b57 |
1106 | if (!aShader->LoadSource (theGlContext, theSource.Source())) |
fc73a202 |
1107 | { |
07039714 |
1108 | const TCollection_ExtendedString aMessage = TCollection_ExtendedString ("Error: Failed to set ") + |
1109 | (theType == GL_VERTEX_SHADER ? "vertex" : "fragment") + " shader source"; |
1110 | |
3b523c4c |
1111 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION, |
1112 | GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, aMessage); |
e276548b |
1113 | |
91c60b57 |
1114 | aShader->Release (theGlContext.operator->()); |
e276548b |
1115 | |
fc73a202 |
1116 | return Handle(OpenGl_ShaderObject)(); |
1117 | } |
e276548b |
1118 | |
fc73a202 |
1119 | TCollection_AsciiString aBuildLog; |
e276548b |
1120 | |
91c60b57 |
1121 | if (!aShader->Compile (theGlContext)) |
e276548b |
1122 | { |
91c60b57 |
1123 | aShader->FetchInfoLog (theGlContext, aBuildLog); |
fc73a202 |
1124 | |
07039714 |
1125 | const TCollection_ExtendedString aMessage = TCollection_ExtendedString ("Error: Failed to compile ") + |
1126 | (theType == GL_VERTEX_SHADER ? "vertex" : "fragment") + " shader object:\n" + aBuildLog; |
1127 | |
3b523c4c |
1128 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION, |
1129 | GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, aMessage); |
e276548b |
1130 | |
91c60b57 |
1131 | aShader->Release (theGlContext.operator->()); |
fc73a202 |
1132 | |
1133 | return Handle(OpenGl_ShaderObject)(); |
1134 | } |
91c60b57 |
1135 | else if (theGlContext->caps->glslWarnings) |
fc73a202 |
1136 | { |
91c60b57 |
1137 | aShader->FetchInfoLog (theGlContext, aBuildLog); |
07039714 |
1138 | |
1139 | if (!aBuildLog.IsEmpty() && !aBuildLog.IsEqual ("No errors.\n")) |
fc73a202 |
1140 | { |
07039714 |
1141 | const TCollection_ExtendedString aMessage = TCollection_ExtendedString (theType == GL_VERTEX_SHADER ? |
1142 | "Vertex" : "Fragment") + " shader was compiled with following warnings:\n" + aBuildLog; |
1143 | |
3b523c4c |
1144 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION, |
1145 | GL_DEBUG_TYPE_PORTABILITY, 0, GL_DEBUG_SEVERITY_LOW, aMessage); |
fc73a202 |
1146 | } |
07039714 |
1147 | } |
e276548b |
1148 | |
fc73a202 |
1149 | return aShader; |
e276548b |
1150 | } |
1151 | |
1152 | // ======================================================================= |
189f85a3 |
1153 | // function : initProgram |
1154 | // purpose : Creates GLSL program from the given shader objects |
1155 | // ======================================================================= |
1156 | Handle(OpenGl_ShaderProgram) OpenGl_View::initProgram (const Handle(OpenGl_Context)& theGlContext, |
1157 | const Handle(OpenGl_ShaderObject)& theVertShader, |
1158 | const Handle(OpenGl_ShaderObject)& theFragShader) |
1159 | { |
1160 | Handle(OpenGl_ShaderProgram) aProgram = new OpenGl_ShaderProgram; |
1161 | |
1162 | if (!aProgram->Create (theGlContext)) |
1163 | { |
1164 | theVertShader->Release (theGlContext.operator->()); |
1165 | |
3b523c4c |
1166 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION, |
1167 | GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, "Failed to create shader program"); |
189f85a3 |
1168 | |
1169 | return Handle(OpenGl_ShaderProgram)(); |
1170 | } |
1171 | |
1172 | if (!aProgram->AttachShader (theGlContext, theVertShader) |
1173 | || !aProgram->AttachShader (theGlContext, theFragShader)) |
1174 | { |
1175 | theVertShader->Release (theGlContext.operator->()); |
1176 | |
3b523c4c |
1177 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION, |
1178 | GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, "Failed to attach shader objects"); |
189f85a3 |
1179 | |
1180 | return Handle(OpenGl_ShaderProgram)(); |
1181 | } |
1182 | |
1183 | aProgram->SetAttributeName (theGlContext, Graphic3d_TOA_POS, "occVertex"); |
1184 | |
1185 | TCollection_AsciiString aLinkLog; |
1186 | |
1187 | if (!aProgram->Link (theGlContext)) |
1188 | { |
1189 | aProgram->FetchInfoLog (theGlContext, aLinkLog); |
1190 | |
1191 | const TCollection_ExtendedString aMessage = TCollection_ExtendedString ( |
1192 | "Failed to link shader program:\n") + aLinkLog; |
1193 | |
3b523c4c |
1194 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION, |
1195 | GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, aMessage); |
189f85a3 |
1196 | |
1197 | return Handle(OpenGl_ShaderProgram)(); |
1198 | } |
1199 | else if (theGlContext->caps->glslWarnings) |
1200 | { |
47e9c178 |
1201 | aProgram->FetchInfoLog (theGlContext, aLinkLog); |
189f85a3 |
1202 | if (!aLinkLog.IsEmpty() && !aLinkLog.IsEqual ("No errors.\n")) |
1203 | { |
1204 | const TCollection_ExtendedString aMessage = TCollection_ExtendedString ( |
1205 | "Shader program was linked with following warnings:\n") + aLinkLog; |
1206 | |
3b523c4c |
1207 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION, |
1208 | GL_DEBUG_TYPE_PORTABILITY, 0, GL_DEBUG_SEVERITY_LOW, aMessage); |
189f85a3 |
1209 | } |
1210 | } |
1211 | |
1212 | return aProgram; |
1213 | } |
1214 | |
1215 | // ======================================================================= |
1216 | // function : initRaytraceResources |
91c60b57 |
1217 | // purpose : Initializes OpenGL/GLSL shader programs |
e276548b |
1218 | // ======================================================================= |
c357e426 |
1219 | Standard_Boolean OpenGl_View::initRaytraceResources (const Handle(OpenGl_Context)& theGlContext) |
e276548b |
1220 | { |
91c60b57 |
1221 | if (myRaytraceInitStatus == OpenGl_RT_FAIL) |
1222 | { |
1223 | return Standard_False; |
1224 | } |
265d4508 |
1225 | |
91c60b57 |
1226 | Standard_Boolean aToRebuildShaders = Standard_False; |
265d4508 |
1227 | |
91c60b57 |
1228 | if (myRaytraceInitStatus == OpenGl_RT_INIT) |
1229 | { |
1230 | if (!myIsRaytraceDataValid) |
1231 | return Standard_True; |
07039714 |
1232 | |
91c60b57 |
1233 | const Standard_Integer aRequiredStackSize = |
1234 | myRaytraceGeometry.HighLevelTreeDepth() + myRaytraceGeometry.BottomLevelTreeDepth(); |
e276548b |
1235 | |
91c60b57 |
1236 | if (myRaytraceParameters.StackSize < aRequiredStackSize) |
1237 | { |
1238 | myRaytraceParameters.StackSize = Max (aRequiredStackSize, THE_DEFAULT_STACK_SIZE); |
e276548b |
1239 | |
fc73a202 |
1240 | aToRebuildShaders = Standard_True; |
1241 | } |
1242 | else |
1243 | { |
bc8c79bb |
1244 | if (aRequiredStackSize < myRaytraceParameters.StackSize) |
fc73a202 |
1245 | { |
bc8c79bb |
1246 | if (myRaytraceParameters.StackSize > THE_DEFAULT_STACK_SIZE) |
fc73a202 |
1247 | { |
bc8c79bb |
1248 | myRaytraceParameters.StackSize = Max (aRequiredStackSize, THE_DEFAULT_STACK_SIZE); |
fc73a202 |
1249 | aToRebuildShaders = Standard_True; |
1250 | } |
1251 | } |
1252 | } |
e276548b |
1253 | |
c357e426 |
1254 | if (myRenderParams.RaytracingDepth != myRaytraceParameters.NbBounces) |
bc8c79bb |
1255 | { |
c357e426 |
1256 | myRaytraceParameters.NbBounces = myRenderParams.RaytracingDepth; |
bc8c79bb |
1257 | aToRebuildShaders = Standard_True; |
1258 | } |
1259 | |
f483f2ed |
1260 | if (myRaytraceGeometry.HasTextures() != myRaytraceParameters.UseBindlessTextures) |
1261 | { |
1262 | myRaytraceParameters.UseBindlessTextures = myRaytraceGeometry.HasTextures(); |
1263 | aToRebuildShaders = Standard_True; |
1264 | } |
1265 | |
c357e426 |
1266 | if (myRenderParams.IsTransparentShadowEnabled != myRaytraceParameters.TransparentShadows) |
bc8c79bb |
1267 | { |
c357e426 |
1268 | myRaytraceParameters.TransparentShadows = myRenderParams.IsTransparentShadowEnabled; |
bc8c79bb |
1269 | aToRebuildShaders = Standard_True; |
1270 | } |
1271 | |
c357e426 |
1272 | if (myRenderParams.IsGlobalIlluminationEnabled != myRaytraceParameters.GlobalIllumination) |
189f85a3 |
1273 | { |
c357e426 |
1274 | myRaytraceParameters.GlobalIllumination = myRenderParams.IsGlobalIlluminationEnabled; |
189f85a3 |
1275 | aToRebuildShaders = Standard_True; |
1276 | } |
1277 | |
fc73a202 |
1278 | if (aToRebuildShaders) |
1279 | { |
189f85a3 |
1280 | // Reject accumulated frames |
1281 | myAccumFrames = 0; |
e276548b |
1282 | |
189f85a3 |
1283 | // We need to update environment texture |
91c60b57 |
1284 | myToUpdateEnvironmentMap = Standard_True; |
84c71f29 |
1285 | |
91c60b57 |
1286 | TCollection_AsciiString aPrefixString = generateShaderPrefix (theGlContext); |
bc8c79bb |
1287 | |
1288 | #ifdef RAY_TRACE_PRINT_INFO |
1289 | std::cout << "GLSL prefix string:" << std::endl << aPrefixString << std::endl; |
1290 | #endif |
265d4508 |
1291 | |
bc8c79bb |
1292 | myRaytraceShaderSource.SetPrefix (aPrefixString); |
1293 | myPostFSAAShaderSource.SetPrefix (aPrefixString); |
265d4508 |
1294 | |
91c60b57 |
1295 | if (!myRaytraceShader->LoadSource (theGlContext, myRaytraceShaderSource.Source()) |
1296 | || !myPostFSAAShader->LoadSource (theGlContext, myPostFSAAShaderSource.Source())) |
fc73a202 |
1297 | { |
91c60b57 |
1298 | return safeFailBack ("Failed to load source into ray-tracing fragment shaders", theGlContext); |
fc73a202 |
1299 | } |
265d4508 |
1300 | |
91c60b57 |
1301 | if (!myRaytraceShader->Compile (theGlContext) |
1302 | || !myPostFSAAShader->Compile (theGlContext)) |
fc73a202 |
1303 | { |
91c60b57 |
1304 | return safeFailBack ("Failed to compile ray-tracing fragment shaders", theGlContext); |
fc73a202 |
1305 | } |
1306 | |
91c60b57 |
1307 | myRaytraceProgram->SetAttributeName (theGlContext, Graphic3d_TOA_POS, "occVertex"); |
1308 | myPostFSAAProgram->SetAttributeName (theGlContext, Graphic3d_TOA_POS, "occVertex"); |
1309 | if (!myRaytraceProgram->Link (theGlContext) |
1310 | || !myPostFSAAProgram->Link (theGlContext)) |
fc73a202 |
1311 | { |
91c60b57 |
1312 | return safeFailBack ("Failed to initialize vertex attributes for ray-tracing program", theGlContext); |
fc73a202 |
1313 | } |
1314 | } |
e276548b |
1315 | } |
1316 | |
91c60b57 |
1317 | if (myRaytraceInitStatus == OpenGl_RT_NONE) |
fc73a202 |
1318 | { |
91c60b57 |
1319 | if (!theGlContext->IsGlGreaterEqual (3, 1)) |
fc73a202 |
1320 | { |
91c60b57 |
1321 | return safeFailBack ("Ray-tracing requires OpenGL 3.1 and higher", theGlContext); |
25ef750e |
1322 | } |
91c60b57 |
1323 | else if (!theGlContext->arbTboRGB32) |
25ef750e |
1324 | { |
91c60b57 |
1325 | return safeFailBack ("Ray-tracing requires OpenGL 4.0+ or GL_ARB_texture_buffer_object_rgb32 extension", theGlContext); |
1326 | } |
1327 | else if (!theGlContext->arbFBOBlit) |
1328 | { |
1329 | return safeFailBack ("Ray-tracing requires EXT_framebuffer_blit extension", theGlContext); |
fc73a202 |
1330 | } |
5322131b |
1331 | |
c357e426 |
1332 | myRaytraceParameters.NbBounces = myRenderParams.RaytracingDepth; |
bc8c79bb |
1333 | |
fc73a202 |
1334 | TCollection_AsciiString aFolder = Graphic3d_ShaderProgram::ShadersFolder(); |
265d4508 |
1335 | |
fc73a202 |
1336 | if (aFolder.IsEmpty()) |
1337 | { |
91c60b57 |
1338 | return safeFailBack ("Failed to locate shaders directory", theGlContext); |
fc73a202 |
1339 | } |
265d4508 |
1340 | |
fc73a202 |
1341 | if (myIsRaytraceDataValid) |
1342 | { |
bc8c79bb |
1343 | myRaytraceParameters.StackSize = Max (THE_DEFAULT_STACK_SIZE, |
fc73a202 |
1344 | myRaytraceGeometry.HighLevelTreeDepth() + myRaytraceGeometry.BottomLevelTreeDepth()); |
1345 | } |
265d4508 |
1346 | |
91c60b57 |
1347 | TCollection_AsciiString aPrefixString = generateShaderPrefix (theGlContext); |
bc8c79bb |
1348 | |
1349 | #ifdef RAY_TRACE_PRINT_INFO |
1350 | std::cout << "GLSL prefix string:" << std::endl << aPrefixString << std::endl; |
1351 | #endif |
1352 | |
73722cc9 |
1353 | ShaderSource aBasicVertShaderSrc; |
fc73a202 |
1354 | { |
73722cc9 |
1355 | TCollection_AsciiString aFiles[] = { aFolder + "/RaytraceBase.vs", "" }; |
1356 | if (!aBasicVertShaderSrc.Load (aFiles)) |
fc73a202 |
1357 | { |
73722cc9 |
1358 | return safeFailBack (aBasicVertShaderSrc.ErrorDescription(), theGlContext); |
fc73a202 |
1359 | } |
73722cc9 |
1360 | } |
265d4508 |
1361 | |
73722cc9 |
1362 | { |
07039714 |
1363 | TCollection_AsciiString aFiles[] = { aFolder + "/RaytraceBase.fs", |
189f85a3 |
1364 | aFolder + "/PathtraceBase.fs", |
1365 | aFolder + "/RaytraceRender.fs", |
1366 | "" }; |
73722cc9 |
1367 | if (!myRaytraceShaderSource.Load (aFiles, aPrefixString)) |
1368 | { |
1369 | return safeFailBack (myRaytraceShaderSource.ErrorDescription(), theGlContext); |
1370 | } |
e276548b |
1371 | |
73722cc9 |
1372 | Handle(OpenGl_ShaderObject) aBasicVertShader = initShader (GL_VERTEX_SHADER, aBasicVertShaderSrc, theGlContext); |
1373 | if (aBasicVertShader.IsNull()) |
1374 | { |
1375 | return safeFailBack ("Failed to initialize ray-trace vertex shader", theGlContext); |
1376 | } |
265d4508 |
1377 | |
91c60b57 |
1378 | myRaytraceShader = initShader (GL_FRAGMENT_SHADER, myRaytraceShaderSource, theGlContext); |
fc73a202 |
1379 | if (myRaytraceShader.IsNull()) |
1380 | { |
91c60b57 |
1381 | aBasicVertShader->Release (theGlContext.operator->()); |
91c60b57 |
1382 | return safeFailBack ("Failed to initialize ray-trace fragment shader", theGlContext); |
fc73a202 |
1383 | } |
265d4508 |
1384 | |
189f85a3 |
1385 | myRaytraceProgram = initProgram (theGlContext, aBasicVertShader, myRaytraceShader); |
189f85a3 |
1386 | if (myRaytraceProgram.IsNull()) |
fc73a202 |
1387 | { |
189f85a3 |
1388 | return safeFailBack ("Failed to initialize ray-trace shader program", theGlContext); |
fc73a202 |
1389 | } |
1390 | } |
265d4508 |
1391 | |
fc73a202 |
1392 | { |
73722cc9 |
1393 | TCollection_AsciiString aFiles[] = { aFolder + "/RaytraceBase.fs", |
1394 | aFolder + "/RaytraceSmooth.fs", |
1395 | "" }; |
1396 | if (!myPostFSAAShaderSource.Load (aFiles, aPrefixString)) |
1397 | { |
1398 | return safeFailBack (myPostFSAAShaderSource.ErrorDescription(), theGlContext); |
1399 | } |
265d4508 |
1400 | |
73722cc9 |
1401 | Handle(OpenGl_ShaderObject) aBasicVertShader = initShader (GL_VERTEX_SHADER, aBasicVertShaderSrc, theGlContext); |
fc73a202 |
1402 | if (aBasicVertShader.IsNull()) |
1403 | { |
91c60b57 |
1404 | return safeFailBack ("Failed to initialize FSAA vertex shader", theGlContext); |
fc73a202 |
1405 | } |
265d4508 |
1406 | |
91c60b57 |
1407 | myPostFSAAShader = initShader (GL_FRAGMENT_SHADER, myPostFSAAShaderSource, theGlContext); |
fc73a202 |
1408 | if (myPostFSAAShader.IsNull()) |
1409 | { |
91c60b57 |
1410 | aBasicVertShader->Release (theGlContext.operator->()); |
91c60b57 |
1411 | return safeFailBack ("Failed to initialize FSAA fragment shader", theGlContext); |
fc73a202 |
1412 | } |
265d4508 |
1413 | |
189f85a3 |
1414 | myPostFSAAProgram = initProgram (theGlContext, aBasicVertShader, myPostFSAAShader); |
189f85a3 |
1415 | if (myPostFSAAProgram.IsNull()) |
fc73a202 |
1416 | { |
189f85a3 |
1417 | return safeFailBack ("Failed to initialize FSAA shader program", theGlContext); |
fc73a202 |
1418 | } |
189f85a3 |
1419 | } |
fc73a202 |
1420 | |
189f85a3 |
1421 | { |
73722cc9 |
1422 | ShaderSource aDispShaderSrc; |
1423 | TCollection_AsciiString aFiles[] = { aFolder + "/Display.fs", "" }; |
1424 | if (!aDispShaderSrc.Load (aFiles, aPrefixString)) |
1425 | { |
1426 | return safeFailBack (aDispShaderSrc.ErrorDescription(), theGlContext); |
1427 | } |
fc73a202 |
1428 | |
73722cc9 |
1429 | Handle(OpenGl_ShaderObject) aBasicVertShader = initShader (GL_VERTEX_SHADER, aBasicVertShaderSrc, theGlContext); |
189f85a3 |
1430 | if (aBasicVertShader.IsNull()) |
1431 | { |
1432 | return safeFailBack ("Failed to set vertex shader source", theGlContext); |
fc73a202 |
1433 | } |
1434 | |
73722cc9 |
1435 | Handle(OpenGl_ShaderObject) aDisplayShader = initShader (GL_FRAGMENT_SHADER, aDispShaderSrc, theGlContext); |
189f85a3 |
1436 | if (aDisplayShader.IsNull()) |
fc73a202 |
1437 | { |
189f85a3 |
1438 | aBasicVertShader->Release (theGlContext.operator->()); |
189f85a3 |
1439 | return safeFailBack ("Failed to set display fragment shader source", theGlContext); |
07039714 |
1440 | } |
fc73a202 |
1441 | |
189f85a3 |
1442 | myOutImageProgram = initProgram (theGlContext, aBasicVertShader, aDisplayShader); |
189f85a3 |
1443 | if (myOutImageProgram.IsNull()) |
1444 | { |
1445 | return safeFailBack ("Failed to initialize output shader program", theGlContext); |
fc73a202 |
1446 | } |
e276548b |
1447 | } |
fc73a202 |
1448 | } |
e276548b |
1449 | |
91c60b57 |
1450 | if (myRaytraceInitStatus == OpenGl_RT_NONE || aToRebuildShaders) |
fc73a202 |
1451 | { |
1452 | for (Standard_Integer anIndex = 0; anIndex < 2; ++anIndex) |
e276548b |
1453 | { |
fc73a202 |
1454 | Handle(OpenGl_ShaderProgram)& aShaderProgram = |
1455 | (anIndex == 0) ? myRaytraceProgram : myPostFSAAProgram; |
1456 | |
91c60b57 |
1457 | theGlContext->BindProgram (aShaderProgram); |
fc73a202 |
1458 | |
91c60b57 |
1459 | aShaderProgram->SetSampler (theGlContext, |
fc73a202 |
1460 | "uSceneMinPointTexture", OpenGl_RT_SceneMinPointTexture); |
91c60b57 |
1461 | aShaderProgram->SetSampler (theGlContext, |
fc73a202 |
1462 | "uSceneMaxPointTexture", OpenGl_RT_SceneMaxPointTexture); |
91c60b57 |
1463 | aShaderProgram->SetSampler (theGlContext, |
fc73a202 |
1464 | "uSceneNodeInfoTexture", OpenGl_RT_SceneNodeInfoTexture); |
91c60b57 |
1465 | aShaderProgram->SetSampler (theGlContext, |
fc73a202 |
1466 | "uGeometryVertexTexture", OpenGl_RT_GeometryVertexTexture); |
91c60b57 |
1467 | aShaderProgram->SetSampler (theGlContext, |
fc73a202 |
1468 | "uGeometryNormalTexture", OpenGl_RT_GeometryNormalTexture); |
91c60b57 |
1469 | aShaderProgram->SetSampler (theGlContext, |
25ef750e |
1470 | "uGeometryTexCrdTexture", OpenGl_RT_GeometryTexCrdTexture); |
91c60b57 |
1471 | aShaderProgram->SetSampler (theGlContext, |
25ef750e |
1472 | "uGeometryTriangTexture", OpenGl_RT_GeometryTriangTexture); |
91c60b57 |
1473 | aShaderProgram->SetSampler (theGlContext, |
84c71f29 |
1474 | "uSceneTransformTexture", OpenGl_RT_SceneTransformTexture); |
91c60b57 |
1475 | aShaderProgram->SetSampler (theGlContext, |
84c71f29 |
1476 | "uEnvironmentMapTexture", OpenGl_RT_EnvironmentMapTexture); |
91c60b57 |
1477 | aShaderProgram->SetSampler (theGlContext, |
25ef750e |
1478 | "uRaytraceMaterialTexture", OpenGl_RT_RaytraceMaterialTexture); |
91c60b57 |
1479 | aShaderProgram->SetSampler (theGlContext, |
25ef750e |
1480 | "uRaytraceLightSrcTexture", OpenGl_RT_RaytraceLightSrcTexture); |
fc73a202 |
1481 | |
91c60b57 |
1482 | aShaderProgram->SetSampler (theGlContext, |
a89742cf |
1483 | "uOpenGlColorTexture", OpenGl_RT_OpenGlColorTexture); |
91c60b57 |
1484 | aShaderProgram->SetSampler (theGlContext, |
a89742cf |
1485 | "uOpenGlDepthTexture", OpenGl_RT_OpenGlDepthTexture); |
1486 | |
fc73a202 |
1487 | if (anIndex == 1) |
1488 | { |
91c60b57 |
1489 | aShaderProgram->SetSampler (theGlContext, |
189f85a3 |
1490 | "uFSAAInputTexture", OpenGl_RT_FsaaInputTexture); |
1491 | } |
1492 | else |
1493 | { |
1494 | aShaderProgram->SetSampler (theGlContext, |
1495 | "uAccumTexture", OpenGl_RT_PrevAccumTexture); |
fc73a202 |
1496 | } |
265d4508 |
1497 | |
fc73a202 |
1498 | myUniformLocations[anIndex][OpenGl_RT_aPosition] = |
91c60b57 |
1499 | aShaderProgram->GetAttributeLocation (theGlContext, "occVertex"); |
fc73a202 |
1500 | |
1501 | myUniformLocations[anIndex][OpenGl_RT_uOriginLB] = |
91c60b57 |
1502 | aShaderProgram->GetUniformLocation (theGlContext, "uOriginLB"); |
fc73a202 |
1503 | myUniformLocations[anIndex][OpenGl_RT_uOriginRB] = |
91c60b57 |
1504 | aShaderProgram->GetUniformLocation (theGlContext, "uOriginRB"); |
fc73a202 |
1505 | myUniformLocations[anIndex][OpenGl_RT_uOriginLT] = |
91c60b57 |
1506 | aShaderProgram->GetUniformLocation (theGlContext, "uOriginLT"); |
fc73a202 |
1507 | myUniformLocations[anIndex][OpenGl_RT_uOriginRT] = |
91c60b57 |
1508 | aShaderProgram->GetUniformLocation (theGlContext, "uOriginRT"); |
fc73a202 |
1509 | myUniformLocations[anIndex][OpenGl_RT_uDirectLB] = |
91c60b57 |
1510 | aShaderProgram->GetUniformLocation (theGlContext, "uDirectLB"); |
fc73a202 |
1511 | myUniformLocations[anIndex][OpenGl_RT_uDirectRB] = |
91c60b57 |
1512 | aShaderProgram->GetUniformLocation (theGlContext, "uDirectRB"); |
fc73a202 |
1513 | myUniformLocations[anIndex][OpenGl_RT_uDirectLT] = |
91c60b57 |
1514 | aShaderProgram->GetUniformLocation (theGlContext, "uDirectLT"); |
fc73a202 |
1515 | myUniformLocations[anIndex][OpenGl_RT_uDirectRT] = |
91c60b57 |
1516 | aShaderProgram->GetUniformLocation (theGlContext, "uDirectRT"); |
1d865689 |
1517 | myUniformLocations[anIndex][OpenGl_RT_uViewMat] = |
1518 | aShaderProgram->GetUniformLocation (theGlContext, "uViewMat"); |
25ef750e |
1519 | myUniformLocations[anIndex][OpenGl_RT_uUnviewMat] = |
91c60b57 |
1520 | aShaderProgram->GetUniformLocation (theGlContext, "uUnviewMat"); |
fc73a202 |
1521 | |
1522 | myUniformLocations[anIndex][OpenGl_RT_uSceneRad] = |
91c60b57 |
1523 | aShaderProgram->GetUniformLocation (theGlContext, "uSceneRadius"); |
fc73a202 |
1524 | myUniformLocations[anIndex][OpenGl_RT_uSceneEps] = |
91c60b57 |
1525 | aShaderProgram->GetUniformLocation (theGlContext, "uSceneEpsilon"); |
25ef750e |
1526 | myUniformLocations[anIndex][OpenGl_RT_uLightCount] = |
91c60b57 |
1527 | aShaderProgram->GetUniformLocation (theGlContext, "uLightCount"); |
25ef750e |
1528 | myUniformLocations[anIndex][OpenGl_RT_uLightAmbnt] = |
91c60b57 |
1529 | aShaderProgram->GetUniformLocation (theGlContext, "uGlobalAmbient"); |
fc73a202 |
1530 | |
1531 | myUniformLocations[anIndex][OpenGl_RT_uOffsetX] = |
91c60b57 |
1532 | aShaderProgram->GetUniformLocation (theGlContext, "uOffsetX"); |
fc73a202 |
1533 | myUniformLocations[anIndex][OpenGl_RT_uOffsetY] = |
91c60b57 |
1534 | aShaderProgram->GetUniformLocation (theGlContext, "uOffsetY"); |
fc73a202 |
1535 | myUniformLocations[anIndex][OpenGl_RT_uSamples] = |
91c60b57 |
1536 | aShaderProgram->GetUniformLocation (theGlContext, "uSamples"); |
84c71f29 |
1537 | |
189f85a3 |
1538 | myUniformLocations[anIndex][OpenGl_RT_uTexSamplersArray] = |
91c60b57 |
1539 | aShaderProgram->GetUniformLocation (theGlContext, "uTextureSamplers"); |
25ef750e |
1540 | |
189f85a3 |
1541 | myUniformLocations[anIndex][OpenGl_RT_uShadowsEnabled] = |
1542 | aShaderProgram->GetUniformLocation (theGlContext, "uShadowsEnabled"); |
1543 | myUniformLocations[anIndex][OpenGl_RT_uReflectEnabled] = |
1544 | aShaderProgram->GetUniformLocation (theGlContext, "uReflectEnabled"); |
1545 | myUniformLocations[anIndex][OpenGl_RT_uSphereMapEnabled] = |
1546 | aShaderProgram->GetUniformLocation (theGlContext, "uSphereMapEnabled"); |
1547 | myUniformLocations[anIndex][OpenGl_RT_uSphereMapForBack] = |
1548 | aShaderProgram->GetUniformLocation (theGlContext, "uSphereMapForBack"); |
8c820969 |
1549 | myUniformLocations[anIndex][OpenGl_RT_uBlockedRngEnabled] = |
1550 | aShaderProgram->GetUniformLocation (theGlContext, "uBlockedRngEnabled"); |
189f85a3 |
1551 | |
1552 | myUniformLocations[anIndex][OpenGl_RT_uSampleWeight] = |
1553 | aShaderProgram->GetUniformLocation (theGlContext, "uSampleWeight"); |
1554 | myUniformLocations[anIndex][OpenGl_RT_uFrameRndSeed] = |
1555 | aShaderProgram->GetUniformLocation (theGlContext, "uFrameRndSeed"); |
1556 | |
1557 | myUniformLocations[anIndex][OpenGl_RT_uBackColorTop] = |
1558 | aShaderProgram->GetUniformLocation (theGlContext, "uBackColorTop"); |
1559 | myUniformLocations[anIndex][OpenGl_RT_uBackColorBot] = |
1560 | aShaderProgram->GetUniformLocation (theGlContext, "uBackColorBot"); |
fc73a202 |
1561 | } |
265d4508 |
1562 | |
189f85a3 |
1563 | theGlContext->BindProgram (myOutImageProgram); |
1564 | |
1565 | myOutImageProgram->SetSampler (theGlContext, |
1566 | "uInputTexture", OpenGl_RT_PrevAccumTexture); |
1567 | |
1d865689 |
1568 | myOutImageProgram->SetSampler (theGlContext, |
1569 | "uDepthTexture", OpenGl_RT_DepthTexture); |
1570 | |
91c60b57 |
1571 | theGlContext->BindProgram (NULL); |
fc73a202 |
1572 | } |
265d4508 |
1573 | |
91c60b57 |
1574 | if (myRaytraceInitStatus != OpenGl_RT_NONE) |
fc73a202 |
1575 | { |
91c60b57 |
1576 | return myRaytraceInitStatus == OpenGl_RT_INIT; |
fc73a202 |
1577 | } |
265d4508 |
1578 | |
fc73a202 |
1579 | const GLfloat aVertices[] = { -1.f, -1.f, 0.f, |
1580 | -1.f, 1.f, 0.f, |
1581 | 1.f, 1.f, 0.f, |
1582 | 1.f, 1.f, 0.f, |
1583 | 1.f, -1.f, 0.f, |
1584 | -1.f, -1.f, 0.f }; |
265d4508 |
1585 | |
91c60b57 |
1586 | myRaytraceScreenQuad.Init (theGlContext, 3, 6, aVertices); |
265d4508 |
1587 | |
91c60b57 |
1588 | myRaytraceInitStatus = OpenGl_RT_INIT; // initialized in normal way |
ca3c13d1 |
1589 | |
fc73a202 |
1590 | return Standard_True; |
1591 | } |
265d4508 |
1592 | |
fc73a202 |
1593 | // ======================================================================= |
189f85a3 |
1594 | // function : nullifyResource |
fc73a202 |
1595 | // purpose : |
1596 | // ======================================================================= |
aa00364d |
1597 | template <class T> |
189f85a3 |
1598 | inline void nullifyResource (const Handle(OpenGl_Context)& theGlContext, |
aa00364d |
1599 | Handle(T)& theResource) |
fc73a202 |
1600 | { |
1601 | if (!theResource.IsNull()) |
1602 | { |
91c60b57 |
1603 | theResource->Release (theGlContext.operator->()); |
fc73a202 |
1604 | theResource.Nullify(); |
1605 | } |
1606 | } |
265d4508 |
1607 | |
fc73a202 |
1608 | // ======================================================================= |
189f85a3 |
1609 | // function : releaseRaytraceResources |
fc73a202 |
1610 | // purpose : Releases OpenGL/GLSL shader programs |
1611 | // ======================================================================= |
91c60b57 |
1612 | void OpenGl_View::releaseRaytraceResources (const Handle(OpenGl_Context)& theGlContext) |
fc73a202 |
1613 | { |
3c4b62a4 |
1614 | myRaytraceFBO1[0]->Release (theGlContext.operator->()); |
1615 | myRaytraceFBO1[1]->Release (theGlContext.operator->()); |
1616 | myRaytraceFBO2[0]->Release (theGlContext.operator->()); |
1617 | myRaytraceFBO2[1]->Release (theGlContext.operator->()); |
265d4508 |
1618 | |
189f85a3 |
1619 | nullifyResource (theGlContext, myRaytraceShader); |
1620 | nullifyResource (theGlContext, myPostFSAAShader); |
265d4508 |
1621 | |
189f85a3 |
1622 | nullifyResource (theGlContext, myRaytraceProgram); |
1623 | nullifyResource (theGlContext, myPostFSAAProgram); |
1624 | nullifyResource (theGlContext, myOutImageProgram); |
265d4508 |
1625 | |
189f85a3 |
1626 | nullifyResource (theGlContext, mySceneNodeInfoTexture); |
1627 | nullifyResource (theGlContext, mySceneMinPointTexture); |
1628 | nullifyResource (theGlContext, mySceneMaxPointTexture); |
265d4508 |
1629 | |
189f85a3 |
1630 | nullifyResource (theGlContext, myGeometryVertexTexture); |
1631 | nullifyResource (theGlContext, myGeometryNormalTexture); |
1632 | nullifyResource (theGlContext, myGeometryTexCrdTexture); |
1633 | nullifyResource (theGlContext, myGeometryTriangTexture); |
1634 | nullifyResource (theGlContext, mySceneTransformTexture); |
265d4508 |
1635 | |
189f85a3 |
1636 | nullifyResource (theGlContext, myRaytraceLightSrcTexture); |
1637 | nullifyResource (theGlContext, myRaytraceMaterialTexture); |
265d4508 |
1638 | |
47e9c178 |
1639 | myRaytraceGeometry.ReleaseResources (theGlContext); |
1640 | |
fc73a202 |
1641 | if (myRaytraceScreenQuad.IsValid()) |
91c60b57 |
1642 | myRaytraceScreenQuad.Release (theGlContext.operator->()); |
1643 | } |
1644 | |
1645 | // ======================================================================= |
bf02aa7d |
1646 | // function : updateRaytraceBuffers |
1647 | // purpose : Updates auxiliary OpenGL frame buffers. |
91c60b57 |
1648 | // ======================================================================= |
bf02aa7d |
1649 | Standard_Boolean OpenGl_View::updateRaytraceBuffers (const Standard_Integer theSizeX, |
91c60b57 |
1650 | const Standard_Integer theSizeY, |
1651 | const Handle(OpenGl_Context)& theGlContext) |
1652 | { |
bf02aa7d |
1653 | // Auxiliary buffers are not used. |
1654 | if (!myRaytraceParameters.GlobalIllumination && !myRenderParams.IsAntialiasingEnabled) |
91c60b57 |
1655 | { |
bf02aa7d |
1656 | myRaytraceFBO1[0]->Release (theGlContext.operator->()); |
1657 | myRaytraceFBO2[0]->Release (theGlContext.operator->()); |
1658 | myRaytraceFBO1[1]->Release (theGlContext.operator->()); |
1659 | myRaytraceFBO2[1]->Release (theGlContext.operator->()); |
1660 | return Standard_True; |
1661 | } |
1662 | |
3c4b62a4 |
1663 | myRaytraceFBO1[0]->InitLazy (theGlContext, theSizeX, theSizeY, GL_RGBA32F, myFboDepthFormat); |
1664 | myRaytraceFBO2[0]->InitLazy (theGlContext, theSizeX, theSizeY, GL_RGBA32F, myFboDepthFormat); |
bf02aa7d |
1665 | |
1666 | // Init second set of buffers for stereographic rendering. |
1667 | if (myCamera->ProjectionType() == Graphic3d_Camera::Projection_Stereo) |
1668 | { |
3c4b62a4 |
1669 | myRaytraceFBO1[1]->InitLazy (theGlContext, theSizeX, theSizeY, GL_RGBA32F, myFboDepthFormat); |
1670 | myRaytraceFBO2[1]->InitLazy (theGlContext, theSizeX, theSizeY, GL_RGBA32F, myFboDepthFormat); |
bf02aa7d |
1671 | } |
1672 | else |
1673 | { |
1674 | myRaytraceFBO1[1]->Release (theGlContext.operator->()); |
1675 | myRaytraceFBO2[1]->Release (theGlContext.operator->()); |
91c60b57 |
1676 | } |
1677 | |
1678 | return Standard_True; |
1679 | } |
1680 | |
1681 | // ======================================================================= |
189f85a3 |
1682 | // function : updateCamera |
91c60b57 |
1683 | // purpose : Generates viewing rays for corners of screen quad |
1684 | // ======================================================================= |
1685 | void OpenGl_View::updateCamera (const OpenGl_Mat4& theOrientation, |
1686 | const OpenGl_Mat4& theViewMapping, |
1687 | OpenGl_Vec3* theOrigins, |
1688 | OpenGl_Vec3* theDirects, |
1d865689 |
1689 | OpenGl_Mat4& theView, |
91c60b57 |
1690 | OpenGl_Mat4& theUnview) |
1691 | { |
1d865689 |
1692 | // compute view-projection matrix |
1693 | theView = theViewMapping * theOrientation; |
1694 | |
1695 | // compute inverse view-projection matrix |
1696 | theView.Inverted (theUnview); |
91c60b57 |
1697 | |
1698 | Standard_Integer aOriginIndex = 0; |
1699 | Standard_Integer aDirectIndex = 0; |
1700 | |
1701 | for (Standard_Integer aY = -1; aY <= 1; aY += 2) |
1702 | { |
1703 | for (Standard_Integer aX = -1; aX <= 1; aX += 2) |
1704 | { |
1705 | OpenGl_Vec4 aOrigin (GLfloat(aX), |
1706 | GLfloat(aY), |
1707 | -1.0f, |
1708 | 1.0f); |
1709 | |
1710 | aOrigin = theUnview * aOrigin; |
1711 | |
1712 | aOrigin.x() = aOrigin.x() / aOrigin.w(); |
1713 | aOrigin.y() = aOrigin.y() / aOrigin.w(); |
1714 | aOrigin.z() = aOrigin.z() / aOrigin.w(); |
1715 | |
1716 | OpenGl_Vec4 aDirect (GLfloat(aX), |
1717 | GLfloat(aY), |
1718 | 1.0f, |
1719 | 1.0f); |
1720 | |
1721 | aDirect = theUnview * aDirect; |
1722 | |
1723 | aDirect.x() = aDirect.x() / aDirect.w(); |
1724 | aDirect.y() = aDirect.y() / aDirect.w(); |
1725 | aDirect.z() = aDirect.z() / aDirect.w(); |
1726 | |
1727 | aDirect = aDirect - aOrigin; |
1728 | |
91c60b57 |
1729 | theOrigins[aOriginIndex++] = OpenGl_Vec3 (static_cast<GLfloat> (aOrigin.x()), |
1730 | static_cast<GLfloat> (aOrigin.y()), |
1731 | static_cast<GLfloat> (aOrigin.z())); |
1732 | |
b0dc79bc |
1733 | theDirects[aDirectIndex++] = OpenGl_Vec3 (static_cast<GLfloat> (aDirect.x()), |
1734 | static_cast<GLfloat> (aDirect.y()), |
1735 | static_cast<GLfloat> (aDirect.z())); |
91c60b57 |
1736 | } |
1737 | } |
fc73a202 |
1738 | } |
265d4508 |
1739 | |
fc73a202 |
1740 | // ======================================================================= |
189f85a3 |
1741 | // function : uploadRaytraceData |
fc73a202 |
1742 | // purpose : Uploads ray-trace data to the GPU |
1743 | // ======================================================================= |
91c60b57 |
1744 | Standard_Boolean OpenGl_View::uploadRaytraceData (const Handle(OpenGl_Context)& theGlContext) |
fc73a202 |
1745 | { |
91c60b57 |
1746 | if (!theGlContext->IsGlGreaterEqual (3, 1)) |
fc73a202 |
1747 | { |
265d4508 |
1748 | #ifdef RAY_TRACE_PRINT_INFO |
fc73a202 |
1749 | std::cout << "Error: OpenGL version is less than 3.1" << std::endl; |
265d4508 |
1750 | #endif |
fc73a202 |
1751 | return Standard_False; |
e276548b |
1752 | } |
1753 | |
189f85a3 |
1754 | myAccumFrames = 0; // accumulation should be restarted |
1755 | |
25ef750e |
1756 | ///////////////////////////////////////////////////////////////////////////// |
1757 | // Prepare OpenGL textures |
1758 | |
91c60b57 |
1759 | if (theGlContext->arbTexBindless != NULL) |
25ef750e |
1760 | { |
1761 | // If OpenGL driver supports bindless textures we need |
1762 | // to get unique 64- bit handles for using on the GPU |
91c60b57 |
1763 | if (!myRaytraceGeometry.UpdateTextureHandles (theGlContext)) |
25ef750e |
1764 | { |
1765 | #ifdef RAY_TRACE_PRINT_INFO |
1766 | std::cout << "Error: Failed to get OpenGL texture handles" << std::endl; |
1767 | #endif |
1768 | return Standard_False; |
1769 | } |
1770 | } |
1771 | |
265d4508 |
1772 | ///////////////////////////////////////////////////////////////////////////// |
e2da917a |
1773 | // Create OpenGL BVH buffers |
265d4508 |
1774 | |
e2da917a |
1775 | if (mySceneNodeInfoTexture.IsNull()) // create scene BVH buffers |
e276548b |
1776 | { |
e2da917a |
1777 | mySceneNodeInfoTexture = new OpenGl_TextureBufferArb; |
1778 | mySceneMinPointTexture = new OpenGl_TextureBufferArb; |
1779 | mySceneMaxPointTexture = new OpenGl_TextureBufferArb; |
84c71f29 |
1780 | mySceneTransformTexture = new OpenGl_TextureBufferArb; |
265d4508 |
1781 | |
91c60b57 |
1782 | if (!mySceneNodeInfoTexture->Create (theGlContext) |
1783 | || !mySceneMinPointTexture->Create (theGlContext) |
1784 | || !mySceneMaxPointTexture->Create (theGlContext) |
1785 | || !mySceneTransformTexture->Create (theGlContext)) |
e276548b |
1786 | { |
fc73a202 |
1787 | #ifdef RAY_TRACE_PRINT_INFO |
e2da917a |
1788 | std::cout << "Error: Failed to create scene BVH buffers" << std::endl; |
fc73a202 |
1789 | #endif |
1790 | return Standard_False; |
1791 | } |
1792 | } |
5322131b |
1793 | |
e2da917a |
1794 | if (myGeometryVertexTexture.IsNull()) // create geometry buffers |
265d4508 |
1795 | { |
fc73a202 |
1796 | myGeometryVertexTexture = new OpenGl_TextureBufferArb; |
1797 | myGeometryNormalTexture = new OpenGl_TextureBufferArb; |
25ef750e |
1798 | myGeometryTexCrdTexture = new OpenGl_TextureBufferArb; |
fc73a202 |
1799 | myGeometryTriangTexture = new OpenGl_TextureBufferArb; |
e276548b |
1800 | |
91c60b57 |
1801 | if (!myGeometryVertexTexture->Create (theGlContext) |
1802 | || !myGeometryNormalTexture->Create (theGlContext) |
1803 | || !myGeometryTexCrdTexture->Create (theGlContext) |
1804 | || !myGeometryTriangTexture->Create (theGlContext)) |
fc73a202 |
1805 | { |
1806 | #ifdef RAY_TRACE_PRINT_INFO |
1807 | std::cout << "Error: Failed to create buffers for triangulation data" << std::endl; |
1808 | #endif |
1809 | return Standard_False; |
1810 | } |
265d4508 |
1811 | } |
5322131b |
1812 | |
e2da917a |
1813 | if (myRaytraceMaterialTexture.IsNull()) // create material buffer |
fc73a202 |
1814 | { |
1815 | myRaytraceMaterialTexture = new OpenGl_TextureBufferArb; |
e276548b |
1816 | |
91c60b57 |
1817 | if (!myRaytraceMaterialTexture->Create (theGlContext)) |
fc73a202 |
1818 | { |
1819 | #ifdef RAY_TRACE_PRINT_INFO |
1820 | std::cout << "Error: Failed to create buffers for material data" << std::endl; |
e276548b |
1821 | #endif |
fc73a202 |
1822 | return Standard_False; |
1823 | } |
1824 | } |
e2da917a |
1825 | |
84c71f29 |
1826 | ///////////////////////////////////////////////////////////////////////////// |
1827 | // Write transform buffer |
1828 | |
1829 | BVH_Mat4f* aNodeTransforms = new BVH_Mat4f[myRaytraceGeometry.Size()]; |
84c71f29 |
1830 | |
e2da917a |
1831 | bool aResult = true; |
1832 | |
84c71f29 |
1833 | for (Standard_Integer anElemIndex = 0; anElemIndex < myRaytraceGeometry.Size(); ++anElemIndex) |
1834 | { |
1835 | OpenGl_TriangleSet* aTriangleSet = dynamic_cast<OpenGl_TriangleSet*> ( |
1836 | myRaytraceGeometry.Objects().ChangeValue (anElemIndex).operator->()); |
1837 | |
1838 | const BVH_Transform<Standard_ShortReal, 4>* aTransform = |
1839 | dynamic_cast<const BVH_Transform<Standard_ShortReal, 4>* > (aTriangleSet->Properties().operator->()); |
1840 | |
1841 | Standard_ASSERT_RETURN (aTransform != NULL, |
1842 | "OpenGl_TriangleSet does not contain transform", Standard_False); |
1843 | |
1844 | aNodeTransforms[anElemIndex] = aTransform->Inversed(); |
84c71f29 |
1845 | } |
1846 | |
91c60b57 |
1847 | aResult &= mySceneTransformTexture->Init (theGlContext, 4, |
84c71f29 |
1848 | myRaytraceGeometry.Size() * 4, reinterpret_cast<const GLfloat*> (aNodeTransforms)); |
1849 | |
25ef750e |
1850 | delete [] aNodeTransforms; |
84c71f29 |
1851 | |
1852 | ///////////////////////////////////////////////////////////////////////////// |
bc8c79bb |
1853 | // Write geometry and bottom-level BVH buffers |
84c71f29 |
1854 | |
fc73a202 |
1855 | Standard_Size aTotalVerticesNb = 0; |
1856 | Standard_Size aTotalElementsNb = 0; |
1857 | Standard_Size aTotalBVHNodesNb = 0; |
265d4508 |
1858 | |
fc73a202 |
1859 | for (Standard_Integer anElemIndex = 0; anElemIndex < myRaytraceGeometry.Size(); ++anElemIndex) |
1860 | { |
1861 | OpenGl_TriangleSet* aTriangleSet = dynamic_cast<OpenGl_TriangleSet*> ( |
1862 | myRaytraceGeometry.Objects().ChangeValue (anElemIndex).operator->()); |
265d4508 |
1863 | |
fc73a202 |
1864 | Standard_ASSERT_RETURN (aTriangleSet != NULL, |
1865 | "Error: Failed to get triangulation of OpenGL element", Standard_False); |
1866 | |
1867 | aTotalVerticesNb += aTriangleSet->Vertices.size(); |
1868 | aTotalElementsNb += aTriangleSet->Elements.size(); |
e276548b |
1869 | |
fc73a202 |
1870 | Standard_ASSERT_RETURN (!aTriangleSet->BVH().IsNull(), |
1871 | "Error: Failed to get bottom-level BVH of OpenGL element", Standard_False); |
265d4508 |
1872 | |
fc73a202 |
1873 | aTotalBVHNodesNb += aTriangleSet->BVH()->NodeInfoBuffer().size(); |
1874 | } |
e276548b |
1875 | |
e2da917a |
1876 | aTotalBVHNodesNb += myRaytraceGeometry.BVH()->NodeInfoBuffer().size(); |
1877 | |
fc73a202 |
1878 | if (aTotalBVHNodesNb != 0) |
e276548b |
1879 | { |
e2da917a |
1880 | aResult &= mySceneNodeInfoTexture->Init ( |
91c60b57 |
1881 | theGlContext, 4, GLsizei (aTotalBVHNodesNb), static_cast<const GLuint*> (NULL)); |
e2da917a |
1882 | aResult &= mySceneMinPointTexture->Init ( |
91c60b57 |
1883 | theGlContext, 3, GLsizei (aTotalBVHNodesNb), static_cast<const GLfloat*> (NULL)); |
e2da917a |
1884 | aResult &= mySceneMaxPointTexture->Init ( |
91c60b57 |
1885 | theGlContext, 3, GLsizei (aTotalBVHNodesNb), static_cast<const GLfloat*> (NULL)); |
fc73a202 |
1886 | } |
265d4508 |
1887 | |
fc73a202 |
1888 | if (!aResult) |
1889 | { |
1890 | #ifdef RAY_TRACE_PRINT_INFO |
1891 | std::cout << "Error: Failed to upload buffers for bottom-level scene BVH" << std::endl; |
1892 | #endif |
1893 | return Standard_False; |
1894 | } |
e276548b |
1895 | |
fc73a202 |
1896 | if (aTotalElementsNb != 0) |
1897 | { |
25ef750e |
1898 | aResult &= myGeometryTriangTexture->Init ( |
91c60b57 |
1899 | theGlContext, 4, GLsizei (aTotalElementsNb), static_cast<const GLuint*> (NULL)); |
fc73a202 |
1900 | } |
265d4508 |
1901 | |
fc73a202 |
1902 | if (aTotalVerticesNb != 0) |
1903 | { |
25ef750e |
1904 | aResult &= myGeometryVertexTexture->Init ( |
91c60b57 |
1905 | theGlContext, 3, GLsizei (aTotalVerticesNb), static_cast<const GLfloat*> (NULL)); |
25ef750e |
1906 | aResult &= myGeometryNormalTexture->Init ( |
91c60b57 |
1907 | theGlContext, 3, GLsizei (aTotalVerticesNb), static_cast<const GLfloat*> (NULL)); |
25ef750e |
1908 | aResult &= myGeometryTexCrdTexture->Init ( |
91c60b57 |
1909 | theGlContext, 2, GLsizei (aTotalVerticesNb), static_cast<const GLfloat*> (NULL)); |
fc73a202 |
1910 | } |
265d4508 |
1911 | |
fc73a202 |
1912 | if (!aResult) |
1913 | { |
1914 | #ifdef RAY_TRACE_PRINT_INFO |
1915 | std::cout << "Error: Failed to upload buffers for scene geometry" << std::endl; |
1916 | #endif |
1917 | return Standard_False; |
1918 | } |
265d4508 |
1919 | |
e2da917a |
1920 | const NCollection_Handle<BVH_Tree<Standard_ShortReal, 3> >& aBVH = myRaytraceGeometry.BVH(); |
91c60b57 |
1921 | |
1922 | if (aBVH->Length() > 0) |
1e99558f |
1923 | { |
91c60b57 |
1924 | aResult &= mySceneNodeInfoTexture->SubData (theGlContext, 0, aBVH->Length(), |
1e99558f |
1925 | reinterpret_cast<const GLuint*> (&aBVH->NodeInfoBuffer().front())); |
91c60b57 |
1926 | aResult &= mySceneMinPointTexture->SubData (theGlContext, 0, aBVH->Length(), |
1e99558f |
1927 | reinterpret_cast<const GLfloat*> (&aBVH->MinPointBuffer().front())); |
91c60b57 |
1928 | aResult &= mySceneMaxPointTexture->SubData (theGlContext, 0, aBVH->Length(), |
1e99558f |
1929 | reinterpret_cast<const GLfloat*> (&aBVH->MaxPointBuffer().front())); |
1930 | } |
e2da917a |
1931 | |
fc73a202 |
1932 | for (Standard_Integer aNodeIdx = 0; aNodeIdx < aBVH->Length(); ++aNodeIdx) |
1933 | { |
1934 | if (!aBVH->IsOuter (aNodeIdx)) |
1935 | continue; |
265d4508 |
1936 | |
fc73a202 |
1937 | OpenGl_TriangleSet* aTriangleSet = myRaytraceGeometry.TriangleSet (aNodeIdx); |
e276548b |
1938 | |
fc73a202 |
1939 | Standard_ASSERT_RETURN (aTriangleSet != NULL, |
1940 | "Error: Failed to get triangulation of OpenGL element", Standard_False); |
e276548b |
1941 | |
e2da917a |
1942 | Standard_Integer aBVHOffset = myRaytraceGeometry.AccelerationOffset (aNodeIdx); |
e276548b |
1943 | |
fc73a202 |
1944 | Standard_ASSERT_RETURN (aBVHOffset != OpenGl_RaytraceGeometry::INVALID_OFFSET, |
1945 | "Error: Failed to get offset for bottom-level BVH", Standard_False); |
e276548b |
1946 | |
e2da917a |
1947 | const Standard_Integer aBvhBuffersSize = aTriangleSet->BVH()->Length(); |
265d4508 |
1948 | |
e2da917a |
1949 | if (aBvhBuffersSize != 0) |
fc73a202 |
1950 | { |
91c60b57 |
1951 | aResult &= mySceneNodeInfoTexture->SubData (theGlContext, aBVHOffset, aBvhBuffersSize, |
1952 | reinterpret_cast<const GLuint*> (&aTriangleSet->BVH()->NodeInfoBuffer().front())); |
1953 | aResult &= mySceneMinPointTexture->SubData (theGlContext, aBVHOffset, aBvhBuffersSize, |
1954 | reinterpret_cast<const GLfloat*> (&aTriangleSet->BVH()->MinPointBuffer().front())); |
1955 | aResult &= mySceneMaxPointTexture->SubData (theGlContext, aBVHOffset, aBvhBuffersSize, |
1956 | reinterpret_cast<const GLfloat*> (&aTriangleSet->BVH()->MaxPointBuffer().front())); |
1957 | |
fc73a202 |
1958 | if (!aResult) |
e276548b |
1959 | { |
fc73a202 |
1960 | #ifdef RAY_TRACE_PRINT_INFO |
1961 | std::cout << "Error: Failed to upload buffers for bottom-level scene BVHs" << std::endl; |
1962 | #endif |
e276548b |
1963 | return Standard_False; |
1964 | } |
1965 | } |
1966 | |
fc73a202 |
1967 | const Standard_Integer aVerticesOffset = myRaytraceGeometry.VerticesOffset (aNodeIdx); |
265d4508 |
1968 | |
fc73a202 |
1969 | Standard_ASSERT_RETURN (aVerticesOffset != OpenGl_RaytraceGeometry::INVALID_OFFSET, |
1970 | "Error: Failed to get offset for triangulation vertices of OpenGL element", Standard_False); |
265d4508 |
1971 | |
fc73a202 |
1972 | if (!aTriangleSet->Vertices.empty()) |
1973 | { |
91c60b57 |
1974 | aResult &= myGeometryNormalTexture->SubData (theGlContext, aVerticesOffset, |
1975 | GLsizei (aTriangleSet->Normals.size()), reinterpret_cast<const GLfloat*> (&aTriangleSet->Normals.front())); |
1976 | aResult &= myGeometryTexCrdTexture->SubData (theGlContext, aVerticesOffset, |
1977 | GLsizei (aTriangleSet->TexCrds.size()), reinterpret_cast<const GLfloat*> (&aTriangleSet->TexCrds.front())); |
1978 | aResult &= myGeometryVertexTexture->SubData (theGlContext, aVerticesOffset, |
1979 | GLsizei (aTriangleSet->Vertices.size()), reinterpret_cast<const GLfloat*> (&aTriangleSet->Vertices.front())); |
fc73a202 |
1980 | } |
e276548b |
1981 | |
fc73a202 |
1982 | const Standard_Integer anElementsOffset = myRaytraceGeometry.ElementsOffset (aNodeIdx); |
265d4508 |
1983 | |
fc73a202 |
1984 | Standard_ASSERT_RETURN (anElementsOffset != OpenGl_RaytraceGeometry::INVALID_OFFSET, |
1985 | "Error: Failed to get offset for triangulation elements of OpenGL element", Standard_False); |
e276548b |
1986 | |
fc73a202 |
1987 | if (!aTriangleSet->Elements.empty()) |
e276548b |
1988 | { |
91c60b57 |
1989 | aResult &= myGeometryTriangTexture->SubData (theGlContext, anElementsOffset, GLsizei (aTriangleSet->Elements.size()), |
5cff985a |
1990 | reinterpret_cast<const GLuint*> (&aTriangleSet->Elements.front())); |
e276548b |
1991 | } |
265d4508 |
1992 | |
fc73a202 |
1993 | if (!aResult) |
1994 | { |
1995 | #ifdef RAY_TRACE_PRINT_INFO |
1996 | std::cout << "Error: Failed to upload triangulation buffers for OpenGL element" << std::endl; |
e276548b |
1997 | #endif |
fc73a202 |
1998 | return Standard_False; |
1999 | } |
e276548b |
2000 | } |
e276548b |
2001 | |
25ef750e |
2002 | ///////////////////////////////////////////////////////////////////////////// |
2003 | // Write material buffer |
2004 | |
fc73a202 |
2005 | if (myRaytraceGeometry.Materials.size() != 0) |
2006 | { |
91c60b57 |
2007 | aResult &= myRaytraceMaterialTexture->Init (theGlContext, 4, |
189f85a3 |
2008 | GLsizei (myRaytraceGeometry.Materials.size() * 18), myRaytraceGeometry.Materials.front().Packed()); |
25ef750e |
2009 | |
fc73a202 |
2010 | if (!aResult) |
2011 | { |
2012 | #ifdef RAY_TRACE_PRINT_INFO |
2013 | std::cout << "Error: Failed to upload material buffer" << std::endl; |
2014 | #endif |
2015 | return Standard_False; |
2016 | } |
2017 | } |
e276548b |
2018 | |
fc73a202 |
2019 | myIsRaytraceDataValid = myRaytraceGeometry.Objects().Size() != 0; |
e276548b |
2020 | |
fc73a202 |
2021 | #ifdef RAY_TRACE_PRINT_INFO |
e276548b |
2022 | |
fc73a202 |
2023 | Standard_ShortReal aMemUsed = 0.f; |
e276548b |
2024 | |
fc73a202 |
2025 | for (Standard_Integer anElemIdx = 0; anElemIdx < myRaytraceGeometry.Size(); ++anElemIdx) |
2026 | { |
2027 | OpenGl_TriangleSet* aTriangleSet = dynamic_cast<OpenGl_TriangleSet*> ( |
2028 | myRaytraceGeometry.Objects().ChangeValue (anElemIdx).operator->()); |
e276548b |
2029 | |
fc73a202 |
2030 | aMemUsed += static_cast<Standard_ShortReal> ( |
25ef750e |
2031 | aTriangleSet->Vertices.size() * sizeof (BVH_Vec3f)); |
fc73a202 |
2032 | aMemUsed += static_cast<Standard_ShortReal> ( |
25ef750e |
2033 | aTriangleSet->Normals.size() * sizeof (BVH_Vec3f)); |
2034 | aMemUsed += static_cast<Standard_ShortReal> ( |
2035 | aTriangleSet->TexCrds.size() * sizeof (BVH_Vec2f)); |
fc73a202 |
2036 | aMemUsed += static_cast<Standard_ShortReal> ( |
2037 | aTriangleSet->Elements.size() * sizeof (BVH_Vec4i)); |
e276548b |
2038 | |
fc73a202 |
2039 | aMemUsed += static_cast<Standard_ShortReal> ( |
2040 | aTriangleSet->BVH()->NodeInfoBuffer().size() * sizeof (BVH_Vec4i)); |
2041 | aMemUsed += static_cast<Standard_ShortReal> ( |
25ef750e |
2042 | aTriangleSet->BVH()->MinPointBuffer().size() * sizeof (BVH_Vec3f)); |
fc73a202 |
2043 | aMemUsed += static_cast<Standard_ShortReal> ( |
25ef750e |
2044 | aTriangleSet->BVH()->MaxPointBuffer().size() * sizeof (BVH_Vec3f)); |
fc73a202 |
2045 | } |
e276548b |
2046 | |
fc73a202 |
2047 | aMemUsed += static_cast<Standard_ShortReal> ( |
2048 | myRaytraceGeometry.BVH()->NodeInfoBuffer().size() * sizeof (BVH_Vec4i)); |
2049 | aMemUsed += static_cast<Standard_ShortReal> ( |
25ef750e |
2050 | myRaytraceGeometry.BVH()->MinPointBuffer().size() * sizeof (BVH_Vec3f)); |
fc73a202 |
2051 | aMemUsed += static_cast<Standard_ShortReal> ( |
25ef750e |
2052 | myRaytraceGeometry.BVH()->MaxPointBuffer().size() * sizeof (BVH_Vec3f)); |
e276548b |
2053 | |
fc73a202 |
2054 | std::cout << "GPU Memory Used (MB): ~" << aMemUsed / 1048576 << std::endl; |
e276548b |
2055 | |
fc73a202 |
2056 | #endif |
e276548b |
2057 | |
fc73a202 |
2058 | return aResult; |
2059 | } |
e276548b |
2060 | |
fc73a202 |
2061 | // ======================================================================= |
189f85a3 |
2062 | // function : updateRaytraceLightSources |
91c60b57 |
2063 | // purpose : Updates 3D scene light sources for ray-tracing |
fc73a202 |
2064 | // ======================================================================= |
91c60b57 |
2065 | Standard_Boolean OpenGl_View::updateRaytraceLightSources (const OpenGl_Mat4& theInvModelView, const Handle(OpenGl_Context)& theGlContext) |
fc73a202 |
2066 | { |
91c60b57 |
2067 | myRaytraceGeometry.Sources.clear(); |
2068 | |
2069 | myRaytraceGeometry.Ambient = BVH_Vec4f (0.0f, 0.0f, 0.0f, 0.0f); |
2070 | |
c357e426 |
2071 | OpenGl_ListOfLight::Iterator aLightIter (myShadingModel == Graphic3d_TOSM_NONE ? OpenGl_NoShadingLight() : myLights); |
2072 | for (; aLightIter.More(); aLightIter.Next()) |
91c60b57 |
2073 | { |
189f85a3 |
2074 | const OpenGl_Light& aLight = aLightIter.Value(); |
91c60b57 |
2075 | |
c357e426 |
2076 | if (aLight.Type == Graphic3d_TOLS_AMBIENT) |
91c60b57 |
2077 | { |
189f85a3 |
2078 | myRaytraceGeometry.Ambient += BVH_Vec4f (aLight.Color.r() * aLight.Intensity, |
2079 | aLight.Color.g() * aLight.Intensity, |
2080 | aLight.Color.b() * aLight.Intensity, |
91c60b57 |
2081 | 0.0f); |
2082 | continue; |
2083 | } |
2084 | |
189f85a3 |
2085 | BVH_Vec4f aDiffuse (aLight.Color.r() * aLight.Intensity, |
2086 | aLight.Color.g() * aLight.Intensity, |
2087 | aLight.Color.b() * aLight.Intensity, |
91c60b57 |
2088 | 1.0f); |
2089 | |
2090 | BVH_Vec4f aPosition (-aLight.Direction.x(), |
2091 | -aLight.Direction.y(), |
2092 | -aLight.Direction.z(), |
2093 | 0.0f); |
2094 | |
c357e426 |
2095 | if (aLight.Type != Graphic3d_TOLS_DIRECTIONAL) |
91c60b57 |
2096 | { |
2097 | aPosition = BVH_Vec4f (aLight.Position.x(), |
2098 | aLight.Position.y(), |
2099 | aLight.Position.z(), |
2100 | 1.0f); |
189f85a3 |
2101 | |
2102 | // store smoothing radius in w-component |
2103 | aDiffuse.w() = Max (aLight.Smoothness, 0.f); |
2104 | } |
2105 | else |
2106 | { |
2107 | // store cosine of smoothing angle in w-component |
2108 | aDiffuse.w() = cosf (Min (Max (aLight.Smoothness, 0.f), static_cast<Standard_ShortReal> (M_PI / 2.0))); |
91c60b57 |
2109 | } |
2110 | |
2111 | if (aLight.IsHeadlight) |
2112 | { |
2113 | aPosition = theInvModelView * aPosition; |
2114 | } |
2115 | |
2116 | myRaytraceGeometry.Sources.push_back (OpenGl_RaytraceLight (aDiffuse, aPosition)); |
2117 | } |
2118 | |
2119 | if (myRaytraceLightSrcTexture.IsNull()) // create light source buffer |
2120 | { |
2121 | myRaytraceLightSrcTexture = new OpenGl_TextureBufferArb; |
2122 | |
2123 | if (!myRaytraceLightSrcTexture->Create (theGlContext)) |
2124 | { |
2125 | #ifdef RAY_TRACE_PRINT_INFO |
2126 | std::cout << "Error: Failed to create light source buffer" << std::endl; |
2127 | #endif |
2128 | return Standard_False; |
2129 | } |
2130 | } |
189f85a3 |
2131 | |
91c60b57 |
2132 | if (myRaytraceGeometry.Sources.size() != 0) |
fc73a202 |
2133 | { |
91c60b57 |
2134 | const GLfloat* aDataPtr = myRaytraceGeometry.Sources.front().Packed(); |
2135 | if (!myRaytraceLightSrcTexture->Init (theGlContext, 4, GLsizei (myRaytraceGeometry.Sources.size() * 2), aDataPtr)) |
2136 | { |
2137 | #ifdef RAY_TRACE_PRINT_INFO |
2138 | std::cout << "Error: Failed to upload light source buffer" << std::endl; |
2139 | #endif |
2140 | return Standard_False; |
2141 | } |
fc73a202 |
2142 | } |
e276548b |
2143 | |
fc73a202 |
2144 | return Standard_True; |
e276548b |
2145 | } |
2146 | |
2147 | // ======================================================================= |
189f85a3 |
2148 | // function : updateRaytraceEnvironmentMap |
91c60b57 |
2149 | // purpose : Updates environment map for ray-tracing |
e276548b |
2150 | // ======================================================================= |
91c60b57 |
2151 | Standard_Boolean OpenGl_View::updateRaytraceEnvironmentMap (const Handle(OpenGl_Context)& theGlContext) |
e276548b |
2152 | { |
91c60b57 |
2153 | Standard_Boolean aResult = Standard_True; |
e276548b |
2154 | |
91c60b57 |
2155 | if (!myToUpdateEnvironmentMap) |
e276548b |
2156 | { |
91c60b57 |
2157 | return aResult; |
2158 | } |
e276548b |
2159 | |
91c60b57 |
2160 | for (Standard_Integer anIdx = 0; anIdx < 2; ++anIdx) |
2161 | { |
2162 | const Handle(OpenGl_ShaderProgram)& aProgram = |
2163 | anIdx == 0 ? myRaytraceProgram : myPostFSAAProgram; |
fc73a202 |
2164 | |
91c60b57 |
2165 | if (!aProgram.IsNull()) |
2166 | { |
2167 | aResult &= theGlContext->BindProgram (aProgram); |
e276548b |
2168 | |
c357e426 |
2169 | if (!myTextureEnv.IsNull() && mySurfaceDetail != Graphic3d_TOD_NONE) |
91c60b57 |
2170 | { |
2171 | myTextureEnv->Bind (theGlContext, |
2172 | GL_TEXTURE0 + OpenGl_RT_EnvironmentMapTexture); |
b5ac8292 |
2173 | |
91c60b57 |
2174 | aResult &= aProgram->SetUniform (theGlContext, |
189f85a3 |
2175 | myUniformLocations[anIdx][OpenGl_RT_uSphereMapEnabled], 1); |
91c60b57 |
2176 | } |
2177 | else |
2178 | { |
2179 | aResult &= aProgram->SetUniform (theGlContext, |
189f85a3 |
2180 | myUniformLocations[anIdx][OpenGl_RT_uSphereMapEnabled], 0); |
91c60b57 |
2181 | } |
2182 | } |
2183 | } |
e276548b |
2184 | |
91c60b57 |
2185 | myToUpdateEnvironmentMap = Standard_False; |
e276548b |
2186 | |
91c60b57 |
2187 | theGlContext->BindProgram (NULL); |
fc73a202 |
2188 | |
91c60b57 |
2189 | return aResult; |
fc73a202 |
2190 | } |
2191 | |
25ef750e |
2192 | // ======================================================================= |
189f85a3 |
2193 | // function : setUniformState |
25ef750e |
2194 | // purpose : Sets uniform state for the given ray-tracing shader program |
2195 | // ======================================================================= |
c357e426 |
2196 | Standard_Boolean OpenGl_View::setUniformState (const OpenGl_Vec3* theOrigins, |
91c60b57 |
2197 | const OpenGl_Vec3* theDirects, |
1d865689 |
2198 | const OpenGl_Mat4& theViewMat, |
91c60b57 |
2199 | const OpenGl_Mat4& theUnviewMat, |
2200 | const Standard_Integer theProgramId, |
2201 | const Handle(OpenGl_Context)& theGlContext) |
25ef750e |
2202 | { |
91c60b57 |
2203 | Handle(OpenGl_ShaderProgram)& theProgram = |
2204 | theProgramId == 0 ? myRaytraceProgram : myPostFSAAProgram; |
2205 | |
2206 | if (theProgram.IsNull()) |
25ef750e |
2207 | { |
2208 | return Standard_False; |
2209 | } |
2210 | |
91c60b57 |
2211 | const Standard_Integer aLightSourceBufferSize = |
2212 | static_cast<Standard_Integer> (myRaytraceGeometry.Sources.size()); |
2213 | |
25ef750e |
2214 | // Set camera state |
189f85a3 |
2215 | theProgram->SetUniform (theGlContext, |
91c60b57 |
2216 | myUniformLocations[theProgramId][OpenGl_RT_uOriginLB], theOrigins[0]); |
189f85a3 |
2217 | theProgram->SetUniform (theGlContext, |
91c60b57 |
2218 | myUniformLocations[theProgramId][OpenGl_RT_uOriginRB], theOrigins[1]); |
189f85a3 |
2219 | theProgram->SetUniform (theGlContext, |
91c60b57 |
2220 | myUniformLocations[theProgramId][OpenGl_RT_uOriginLT], theOrigins[2]); |
189f85a3 |
2221 | theProgram->SetUniform (theGlContext, |
91c60b57 |
2222 | myUniformLocations[theProgramId][OpenGl_RT_uOriginRT], theOrigins[3]); |
189f85a3 |
2223 | theProgram->SetUniform (theGlContext, |
91c60b57 |
2224 | myUniformLocations[theProgramId][OpenGl_RT_uDirectLB], theDirects[0]); |
189f85a3 |
2225 | theProgram->SetUniform (theGlContext, |
91c60b57 |
2226 | myUniformLocations[theProgramId][OpenGl_RT_uDirectRB], theDirects[1]); |
189f85a3 |
2227 | theProgram->SetUniform (theGlContext, |
91c60b57 |
2228 | myUniformLocations[theProgramId][OpenGl_RT_uDirectLT], theDirects[2]); |
189f85a3 |
2229 | theProgram->SetUniform (theGlContext, |
91c60b57 |
2230 | myUniformLocations[theProgramId][OpenGl_RT_uDirectRT], theDirects[3]); |
1d865689 |
2231 | theProgram->SetUniform (theGlContext, |
2232 | myUniformLocations[theProgramId][OpenGl_RT_uViewMat], theViewMat); |
189f85a3 |
2233 | theProgram->SetUniform (theGlContext, |
91c60b57 |
2234 | myUniformLocations[theProgramId][OpenGl_RT_uUnviewMat], theUnviewMat); |
312a4043 |
2235 | |
25ef750e |
2236 | // Set scene parameters |
189f85a3 |
2237 | theProgram->SetUniform (theGlContext, |
91c60b57 |
2238 | myUniformLocations[theProgramId][OpenGl_RT_uSceneRad], myRaytraceSceneRadius); |
189f85a3 |
2239 | theProgram->SetUniform (theGlContext, |
91c60b57 |
2240 | myUniformLocations[theProgramId][OpenGl_RT_uSceneEps], myRaytraceSceneEpsilon); |
189f85a3 |
2241 | theProgram->SetUniform (theGlContext, |
91c60b57 |
2242 | myUniformLocations[theProgramId][OpenGl_RT_uLightCount], aLightSourceBufferSize); |
189f85a3 |
2243 | theProgram->SetUniform (theGlContext, |
91c60b57 |
2244 | myUniformLocations[theProgramId][OpenGl_RT_uLightAmbnt], myRaytraceGeometry.Ambient); |
2245 | |
2246 | // Set run-time rendering options |
189f85a3 |
2247 | theProgram->SetUniform (theGlContext, |
c357e426 |
2248 | myUniformLocations[theProgramId][OpenGl_RT_uShadowsEnabled], myRenderParams.IsShadowEnabled ? 1 : 0); |
189f85a3 |
2249 | theProgram->SetUniform (theGlContext, |
c357e426 |
2250 | myUniformLocations[theProgramId][OpenGl_RT_uReflectEnabled], myRenderParams.IsReflectionEnabled ? 1 : 0); |
25ef750e |
2251 | |
c357e426 |
2252 | if (myRenderParams.IsGlobalIlluminationEnabled) |
8c820969 |
2253 | { |
2254 | theProgram->SetUniform (theGlContext, |
c357e426 |
2255 | myUniformLocations[theProgramId][OpenGl_RT_uBlockedRngEnabled], myRenderParams.CoherentPathTracingMode ? 1 : 0); |
8c820969 |
2256 | } |
2257 | |
25ef750e |
2258 | // Set array of 64-bit texture handles |
91c60b57 |
2259 | if (theGlContext->arbTexBindless != NULL && myRaytraceGeometry.HasTextures()) |
25ef750e |
2260 | { |
47e9c178 |
2261 | const std::vector<GLuint64>& aTextures = myRaytraceGeometry.TextureHandles(); |
2262 | |
189f85a3 |
2263 | theProgram->SetUniform (theGlContext, myUniformLocations[theProgramId][OpenGl_RT_uTexSamplersArray], |
47e9c178 |
2264 | static_cast<GLsizei> (aTextures.size()), (OpenGl_Vec2u* )&aTextures.front()); |
25ef750e |
2265 | } |
2266 | |
189f85a3 |
2267 | // Set background colors (only gradient background supported) |
67c12d80 |
2268 | if (myBgGradientArray != NULL |
2269 | && myBgGradientArray->IsDefined()) |
25ef750e |
2270 | { |
189f85a3 |
2271 | theProgram->SetUniform (theGlContext, |
2272 | myUniformLocations[theProgramId][OpenGl_RT_uBackColorTop], myBgGradientArray->GradientColor (0)); |
2273 | theProgram->SetUniform (theGlContext, |
2274 | myUniformLocations[theProgramId][OpenGl_RT_uBackColorBot], myBgGradientArray->GradientColor (1)); |
25ef750e |
2275 | } |
67c12d80 |
2276 | else |
2277 | { |
c357e426 |
2278 | const OpenGl_Vec4 aBackColor (myBgColor.rgb[0], |
2279 | myBgColor.rgb[1], |
2280 | myBgColor.rgb[2], |
67c12d80 |
2281 | 1.0f); |
2282 | theProgram->SetUniform (theGlContext, |
2283 | myUniformLocations[theProgramId][OpenGl_RT_uBackColorTop], aBackColor); |
2284 | theProgram->SetUniform (theGlContext, |
2285 | myUniformLocations[theProgramId][OpenGl_RT_uBackColorBot], aBackColor); |
2286 | } |
25ef750e |
2287 | |
189f85a3 |
2288 | theProgram->SetUniform (theGlContext, |
c357e426 |
2289 | myUniformLocations[theProgramId][OpenGl_RT_uSphereMapForBack], myRenderParams.UseEnvironmentMapBackground ? 1 : 0); |
189f85a3 |
2290 | |
2291 | return Standard_True; |
25ef750e |
2292 | } |
2293 | |
91c60b57 |
2294 | // ======================================================================= |
189f85a3 |
2295 | // function : bindRaytraceTextures |
91c60b57 |
2296 | // purpose : Binds ray-trace textures to corresponding texture units |
2297 | // ======================================================================= |
2298 | void OpenGl_View::bindRaytraceTextures (const Handle(OpenGl_Context)& theGlContext) |
2299 | { |
2300 | mySceneMinPointTexture->BindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_SceneMinPointTexture); |
2301 | mySceneMaxPointTexture->BindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_SceneMaxPointTexture); |
2302 | mySceneNodeInfoTexture->BindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_SceneNodeInfoTexture); |
2303 | myGeometryVertexTexture->BindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_GeometryVertexTexture); |
2304 | myGeometryNormalTexture->BindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_GeometryNormalTexture); |
2305 | myGeometryTexCrdTexture->BindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_GeometryTexCrdTexture); |
2306 | myGeometryTriangTexture->BindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_GeometryTriangTexture); |
2307 | mySceneTransformTexture->BindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_SceneTransformTexture); |
2308 | myRaytraceMaterialTexture->BindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_RaytraceMaterialTexture); |
2309 | myRaytraceLightSrcTexture->BindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_RaytraceLightSrcTexture); |
2310 | |
2311 | if (!myOpenGlFBO.IsNull()) |
2312 | { |
2313 | myOpenGlFBO->ColorTexture()->Bind (theGlContext, GL_TEXTURE0 + OpenGl_RT_OpenGlColorTexture); |
2314 | myOpenGlFBO->DepthStencilTexture()->Bind (theGlContext, GL_TEXTURE0 + OpenGl_RT_OpenGlDepthTexture); |
2315 | } |
2316 | } |
2317 | |
2318 | // ======================================================================= |
189f85a3 |
2319 | // function : unbindRaytraceTextures |
91c60b57 |
2320 | // purpose : Unbinds ray-trace textures from corresponding texture units |
2321 | // ======================================================================= |
2322 | void OpenGl_View::unbindRaytraceTextures (const Handle(OpenGl_Context)& theGlContext) |
2323 | { |
2324 | mySceneMinPointTexture->UnbindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_SceneMinPointTexture); |
2325 | mySceneMaxPointTexture->UnbindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_SceneMaxPointTexture); |
2326 | mySceneNodeInfoTexture->UnbindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_SceneNodeInfoTexture); |
2327 | myGeometryVertexTexture->UnbindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_GeometryVertexTexture); |
2328 | myGeometryNormalTexture->UnbindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_GeometryNormalTexture); |
2329 | myGeometryTexCrdTexture->UnbindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_GeometryTexCrdTexture); |
2330 | myGeometryTriangTexture->UnbindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_GeometryTriangTexture); |
2331 | mySceneTransformTexture->UnbindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_SceneTransformTexture); |
2332 | myRaytraceMaterialTexture->UnbindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_RaytraceMaterialTexture); |
2333 | myRaytraceLightSrcTexture->UnbindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_RaytraceLightSrcTexture); |
2334 | |
2335 | if (!myOpenGlFBO.IsNull()) |
2336 | { |
2337 | myOpenGlFBO->ColorTexture()->Unbind (theGlContext, GL_TEXTURE0 + OpenGl_RT_OpenGlColorTexture); |
2338 | myOpenGlFBO->DepthStencilTexture()->Unbind (theGlContext, GL_TEXTURE0 + OpenGl_RT_OpenGlDepthTexture); |
2339 | } |
2340 | |
2341 | theGlContext->core15fwd->glActiveTexture (GL_TEXTURE0); |
2342 | } |
2343 | |
fc73a202 |
2344 | // ======================================================================= |
189f85a3 |
2345 | // function : runRaytraceShaders |
fc73a202 |
2346 | // purpose : Runs ray-tracing shader programs |
2347 | // ======================================================================= |
c357e426 |
2348 | Standard_Boolean OpenGl_View::runRaytraceShaders (const Standard_Integer theSizeX, |
91c60b57 |
2349 | const Standard_Integer theSizeY, |
2350 | const OpenGl_Vec3* theOrigins, |
2351 | const OpenGl_Vec3* theDirects, |
1d865689 |
2352 | const OpenGl_Mat4& theViewMat, |
91c60b57 |
2353 | const OpenGl_Mat4& theUnviewMat, |
bf02aa7d |
2354 | Graphic3d_Camera::Projection theProjection, |
38a0206f |
2355 | OpenGl_FrameBuffer* theReadDrawFbo, |
91c60b57 |
2356 | const Handle(OpenGl_Context)& theGlContext) |
fc73a202 |
2357 | { |
91c60b57 |
2358 | bindRaytraceTextures (theGlContext); |
fc73a202 |
2359 | |
189f85a3 |
2360 | Handle(OpenGl_FrameBuffer) aRenderFramebuffer; |
d9e72440 |
2361 | Handle(OpenGl_FrameBuffer) aDepthSourceFramebuffer; |
189f85a3 |
2362 | Handle(OpenGl_FrameBuffer) anAccumFramebuffer; |
2363 | |
bf02aa7d |
2364 | // Choose proper set of framebuffers for stereo rendering |
2365 | Standard_Boolean isStereo = myCamera->ProjectionType() == Graphic3d_Camera::Projection_Stereo; |
2366 | Standard_Boolean isRightEye = theProjection == Graphic3d_Camera::Projection_MonoRightEye; |
2367 | Standard_Integer aFBOIdx = (isStereo && isRightEye) ? 1 : 0; |
2368 | |
189f85a3 |
2369 | if (myRaytraceParameters.GlobalIllumination) // if path-tracing is used |
2370 | { |
bf02aa7d |
2371 | aRenderFramebuffer = myAccumFrames % 2 ? myRaytraceFBO1[aFBOIdx] : myRaytraceFBO2[aFBOIdx]; |
2372 | anAccumFramebuffer = myAccumFrames % 2 ? myRaytraceFBO2[aFBOIdx] : myRaytraceFBO1[aFBOIdx]; |
d9e72440 |
2373 | aDepthSourceFramebuffer = aRenderFramebuffer; |
189f85a3 |
2374 | |
2375 | anAccumFramebuffer->ColorTexture()->Bind ( |
2376 | theGlContext, GL_TEXTURE0 + OpenGl_RT_PrevAccumTexture); |
2377 | |
2378 | aRenderFramebuffer->BindBuffer (theGlContext); |
2379 | } |
c357e426 |
2380 | else if (myRenderParams.IsAntialiasingEnabled) // if 2-pass ray-tracing is used |
fc73a202 |
2381 | { |
bf02aa7d |
2382 | myRaytraceFBO1[aFBOIdx]->BindBuffer (theGlContext); |
fc73a202 |
2383 | } |
2384 | |
91c60b57 |
2385 | Standard_Boolean aResult = theGlContext->BindProgram (myRaytraceProgram); |
fc73a202 |
2386 | |
c357e426 |
2387 | aResult &= setUniformState (theOrigins, |
91c60b57 |
2388 | theDirects, |
1d865689 |
2389 | theViewMat, |
91c60b57 |
2390 | theUnviewMat, |
2391 | 0, // ID of RT program |
2392 | theGlContext); |
fc73a202 |
2393 | |
189f85a3 |
2394 | if (myRaytraceParameters.GlobalIllumination) |
fc73a202 |
2395 | { |
1bd2fee4 |
2396 | if (myAccumFrames == 0) |
2397 | { |
2398 | myRNG.SetSeed(); |
2399 | } |
2400 | |
189f85a3 |
2401 | // Set frame accumulation weight |
2402 | myRaytraceProgram->SetUniform (theGlContext, |
2403 | myUniformLocations[0][OpenGl_RT_uSampleWeight], 1.f / (myAccumFrames + 1)); |
2404 | |
2405 | // Set random number generator seed |
2406 | myRaytraceProgram->SetUniform (theGlContext, |
2407 | myUniformLocations[0][OpenGl_RT_uFrameRndSeed], static_cast<Standard_Integer> (myRNG.NextInt() >> 2)); |
fc73a202 |
2408 | } |
25ef750e |
2409 | |
189f85a3 |
2410 | theGlContext->core20fwd->glDrawArrays (GL_TRIANGLES, 0, 6); |
fc73a202 |
2411 | |
d9e72440 |
2412 | if (myRenderParams.IsAntialiasingEnabled) |
189f85a3 |
2413 | { |
d9e72440 |
2414 | glDepthMask (GL_FALSE); |
1d865689 |
2415 | |
bf02aa7d |
2416 | myRaytraceFBO1[aFBOIdx]->ColorTexture()->Bind (theGlContext, GL_TEXTURE0 + OpenGl_RT_FsaaInputTexture); |
189f85a3 |
2417 | |
2418 | aResult &= theGlContext->BindProgram (myPostFSAAProgram); |
2419 | |
c357e426 |
2420 | aResult &= setUniformState (theOrigins, |
189f85a3 |
2421 | theDirects, |
1d865689 |
2422 | theViewMat, |
189f85a3 |
2423 | theUnviewMat, |
2424 | 1, // ID of FSAA program |
2425 | theGlContext); |
2426 | |
91c60b57 |
2427 | // Perform multi-pass adaptive FSAA using ping-pong technique. |
2428 | // We use 'FLIPTRI' sampling pattern changing for every pixel |
2429 | // (3 additional samples per pixel, the 1st sample is already |
2430 | // available from initial ray-traced image). |
2431 | for (Standard_Integer anIt = 1; anIt < 4; ++anIt) |
50d0e1ce |
2432 | { |
91c60b57 |
2433 | GLfloat aOffsetX = 1.f / theSizeX; |
2434 | GLfloat aOffsetY = 1.f / theSizeY; |
50d0e1ce |
2435 | |
91c60b57 |
2436 | if (anIt == 1) |
2437 | { |
2438 | aOffsetX *= -0.55f; |
2439 | aOffsetY *= 0.55f; |
2440 | } |
2441 | else if (anIt == 2) |
2442 | { |
2443 | aOffsetX *= 0.00f; |
2444 | aOffsetY *= -0.55f; |
2445 | } |
2446 | else if (anIt == 3) |
2447 | { |
2448 | aOffsetX *= 0.55f; |
2449 | aOffsetY *= 0.00f; |
2450 | } |
fc73a202 |
2451 | |
91c60b57 |
2452 | aResult &= myPostFSAAProgram->SetUniform (theGlContext, |
2453 | myUniformLocations[1][OpenGl_RT_uSamples], anIt + 1); |
2454 | aResult &= myPostFSAAProgram->SetUniform (theGlContext, |
2455 | myUniformLocations[1][OpenGl_RT_uOffsetX], aOffsetX); |
2456 | aResult &= myPostFSAAProgram->SetUniform (theGlContext, |
2457 | myUniformLocations[1][OpenGl_RT_uOffsetY], aOffsetY); |
fc73a202 |
2458 | |
bf02aa7d |
2459 | Handle(OpenGl_FrameBuffer)& aFramebuffer = anIt % 2 ? myRaytraceFBO2[aFBOIdx] : myRaytraceFBO1[aFBOIdx]; |
fc73a202 |
2460 | |
d9e72440 |
2461 | aFramebuffer->BindBuffer (theGlContext); |
50d0e1ce |
2462 | |
91c60b57 |
2463 | theGlContext->core20fwd->glDrawArrays (GL_TRIANGLES, 0, 6); |
e276548b |
2464 | |
d9e72440 |
2465 | aFramebuffer->ColorTexture()->Bind (theGlContext, GL_TEXTURE0 + OpenGl_RT_FsaaInputTexture); |
e276548b |
2466 | } |
d9e72440 |
2467 | |
2468 | aRenderFramebuffer = myRaytraceFBO2[aFBOIdx]; |
2469 | aDepthSourceFramebuffer = myRaytraceFBO1[aFBOIdx]; |
2470 | } |
2471 | |
2472 | if (myRaytraceParameters.GlobalIllumination || myRenderParams.IsAntialiasingEnabled) |
2473 | { |
2474 | // Output accumulated image |
2475 | glDepthMask (GL_TRUE); |
2476 | |
2477 | theGlContext->BindProgram (myOutImageProgram); |
2478 | |
2479 | myOutImageProgram->SetUniform (theGlContext, "uApplyGamma", static_cast<Standard_Integer> (myRaytraceParameters.GlobalIllumination)); |
2480 | |
2481 | if (theReadDrawFbo != NULL) |
2482 | { |
2483 | theReadDrawFbo->BindBuffer (theGlContext); |
2484 | } |
2485 | else |
2486 | { |
2487 | aRenderFramebuffer->UnbindBuffer (theGlContext); |
2488 | } |
2489 | |
2490 | aRenderFramebuffer->ColorTexture()->Bind ( |
2491 | theGlContext, GL_TEXTURE0 + OpenGl_RT_PrevAccumTexture); |
2492 | |
2493 | aDepthSourceFramebuffer->DepthStencilTexture()->Bind ( |
2494 | theGlContext, GL_TEXTURE0 + OpenGl_RT_DepthTexture); |
2495 | |
2496 | theGlContext->core20fwd->glDrawArrays (GL_TRIANGLES, 0, 6); |
2497 | |
2498 | aDepthSourceFramebuffer->DepthStencilTexture()->Unbind ( |
2499 | theGlContext, GL_TEXTURE0 + OpenGl_RT_DepthTexture); |
2500 | |
2501 | aRenderFramebuffer->ColorTexture()->Unbind ( |
2502 | theGlContext, GL_TEXTURE0 + OpenGl_RT_PrevAccumTexture); |
e276548b |
2503 | } |
fc73a202 |
2504 | |
91c60b57 |
2505 | unbindRaytraceTextures (theGlContext); |
a89742cf |
2506 | |
91c60b57 |
2507 | theGlContext->BindProgram (NULL); |
fc73a202 |
2508 | |
91c60b57 |
2509 | return aResult; |
e276548b |
2510 | } |
2511 | |
2512 | // ======================================================================= |
189f85a3 |
2513 | // function : raytrace |
fc73a202 |
2514 | // purpose : Redraws the window using OpenGL/GLSL ray-tracing |
e276548b |
2515 | // ======================================================================= |
c357e426 |
2516 | Standard_Boolean OpenGl_View::raytrace (const Standard_Integer theSizeX, |
91c60b57 |
2517 | const Standard_Integer theSizeY, |
bf02aa7d |
2518 | Graphic3d_Camera::Projection theProjection, |
38a0206f |
2519 | OpenGl_FrameBuffer* theReadDrawFbo, |
91c60b57 |
2520 | const Handle(OpenGl_Context)& theGlContext) |
e276548b |
2521 | { |
c357e426 |
2522 | if (!initRaytraceResources (theGlContext)) |
91c60b57 |
2523 | { |
e276548b |
2524 | return Standard_False; |
91c60b57 |
2525 | } |
2526 | |
bf02aa7d |
2527 | if (!updateRaytraceBuffers (theSizeX, theSizeY, theGlContext)) |
91c60b57 |
2528 | { |
2529 | return Standard_False; |
2530 | } |
e276548b |
2531 | |
91c60b57 |
2532 | if (!updateRaytraceEnvironmentMap (theGlContext)) |
2533 | { |
e276548b |
2534 | return Standard_False; |
91c60b57 |
2535 | } |
e276548b |
2536 | |
2537 | // Get model-view and projection matrices |
38a0206f |
2538 | OpenGl_Mat4 aOrientationMatrix = myCamera->OrientationMatrixF(); |
2539 | OpenGl_Mat4 aViewMappingMatrix = theGlContext->ProjectionState.Current(); |
e276548b |
2540 | |
38a0206f |
2541 | OpenGl_Mat4 aInverOrientMatrix; |
91c60b57 |
2542 | aOrientationMatrix.Inverted (aInverOrientMatrix); |
91c60b57 |
2543 | if (!updateRaytraceLightSources (aInverOrientMatrix, theGlContext)) |
2544 | { |
e276548b |
2545 | return Standard_False; |
91c60b57 |
2546 | } |
e276548b |
2547 | |
fc73a202 |
2548 | OpenGl_Vec3 aOrigins[4]; |
2549 | OpenGl_Vec3 aDirects[4]; |
1d865689 |
2550 | OpenGl_Mat4 aViewMat; |
25ef750e |
2551 | OpenGl_Mat4 anUnviewMat; |
e276548b |
2552 | |
91c60b57 |
2553 | updateCamera (aOrientationMatrix, |
fc73a202 |
2554 | aViewMappingMatrix, |
2555 | aOrigins, |
a89742cf |
2556 | aDirects, |
1d865689 |
2557 | aViewMat, |
25ef750e |
2558 | anUnviewMat); |
e276548b |
2559 | |
38a0206f |
2560 | if (theReadDrawFbo != NULL) |
a89742cf |
2561 | { |
38a0206f |
2562 | theReadDrawFbo->BindBuffer (theGlContext); |
a89742cf |
2563 | } |
2564 | |
c827ea3a |
2565 | // Generate ray-traced image |
e276548b |
2566 | if (myIsRaytraceDataValid) |
2567 | { |
189f85a3 |
2568 | myRaytraceScreenQuad.BindVertexAttrib (theGlContext, Graphic3d_TOA_POS); |
fc73a202 |
2569 | |
91c60b57 |
2570 | if (!myRaytraceGeometry.AcquireTextures (theGlContext)) |
25ef750e |
2571 | { |
3b523c4c |
2572 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_ERROR, |
2573 | 0, GL_DEBUG_SEVERITY_MEDIUM, "Error: Failed to acquire OpenGL image textures"); |
25ef750e |
2574 | } |
2575 | |
d9e72440 |
2576 | // Remember the old depth function and mask |
1d865689 |
2577 | GLint aDepthFunc; |
2578 | theGlContext->core11fwd->glGetIntegerv (GL_DEPTH_FUNC, &aDepthFunc); |
2579 | |
d9e72440 |
2580 | GLboolean aDepthMask; |
2581 | theGlContext->core11fwd->glGetBooleanv (GL_DEPTH_WRITEMASK, &aDepthMask); |
2582 | |
1d865689 |
2583 | glDisable (GL_BLEND); |
2584 | glDepthFunc (GL_ALWAYS); |
2585 | |
c357e426 |
2586 | Standard_Boolean aResult = runRaytraceShaders (theSizeX, |
91c60b57 |
2587 | theSizeY, |
2588 | aOrigins, |
2589 | aDirects, |
1d865689 |
2590 | aViewMat, |
91c60b57 |
2591 | anUnviewMat, |
bf02aa7d |
2592 | theProjection, |
38a0206f |
2593 | theReadDrawFbo, |
91c60b57 |
2594 | theGlContext); |
fc73a202 |
2595 | |
d9e72440 |
2596 | // Restore depth function and mask |
1d865689 |
2597 | glDepthFunc (aDepthFunc); |
d9e72440 |
2598 | glDepthMask (aDepthMask); |
1d865689 |
2599 | |
91c60b57 |
2600 | if (!aResult) |
25ef750e |
2601 | { |
3b523c4c |
2602 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_ERROR, |
2603 | 0, GL_DEBUG_SEVERITY_MEDIUM, "Error: Failed to execute ray-tracing shaders"); |
91c60b57 |
2604 | } |
25ef750e |
2605 | |
91c60b57 |
2606 | if (!myRaytraceGeometry.ReleaseTextures (theGlContext)) |
2607 | { |
3b523c4c |
2608 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_ERROR, |
2609 | 0, GL_DEBUG_SEVERITY_MEDIUM, "Error: Failed to release OpenGL image textures"); |
25ef750e |
2610 | } |
2611 | |
189f85a3 |
2612 | myRaytraceScreenQuad.UnbindVertexAttrib (theGlContext, Graphic3d_TOA_POS); |
e276548b |
2613 | } |
2614 | |
e276548b |
2615 | return Standard_True; |
f8ae3605 |
2616 | } |