#include <Graphic3d_TextureParams.hxx>
#include <OpenGl_PrimitiveArray.hxx>
#include <OpenGl_VertexBuffer.hxx>
+#include <OpenGl_GlCore44.hxx>
#include <OSD_Protection.hxx>
#include <OSD_File.hxx>
-using namespace OpenGl_Raytrace;
+#include "../Shaders/Shaders_RaytraceBase_vs.pxx"
+#include "../Shaders/Shaders_RaytraceBase_fs.pxx"
+#include "../Shaders/Shaders_PathtraceBase_fs.pxx"
+#include "../Shaders/Shaders_RaytraceRender_fs.pxx"
+#include "../Shaders/Shaders_RaytraceSmooth_fs.pxx"
+#include "../Shaders/Shaders_Display_fs.pxx"
+#include "../Shaders/Shaders_TangentSpaceNormal_glsl.pxx"
//! Use this macro to output ray-tracing debug info
// #define RAY_TRACE_PRINT_INFO
#include <OSD_Timer.hxx>
#endif
+namespace
+{
+ static const OpenGl_Vec4 THE_WHITE_COLOR (1.0f, 1.0f, 1.0f, 1.0f);
+ static const OpenGl_Vec4 THE_BLACK_COLOR (0.0f, 0.0f, 0.0f, 1.0f);
+}
+
+namespace
+{
+ //! Defines OpenGL texture samplers.
+ static const Graphic3d_TextureUnit OpenGl_RT_EnvMapTexture = Graphic3d_TextureUnit_0;
+
+ static const Graphic3d_TextureUnit OpenGl_RT_SceneNodeInfoTexture = Graphic3d_TextureUnit_1;
+ static const Graphic3d_TextureUnit OpenGl_RT_SceneMinPointTexture = Graphic3d_TextureUnit_2;
+ static const Graphic3d_TextureUnit OpenGl_RT_SceneMaxPointTexture = Graphic3d_TextureUnit_3;
+ static const Graphic3d_TextureUnit OpenGl_RT_SceneTransformTexture = Graphic3d_TextureUnit_4;
+
+ static const Graphic3d_TextureUnit OpenGl_RT_GeometryVertexTexture = Graphic3d_TextureUnit_5;
+ static const Graphic3d_TextureUnit OpenGl_RT_GeometryNormalTexture = Graphic3d_TextureUnit_6;
+ static const Graphic3d_TextureUnit OpenGl_RT_GeometryTexCrdTexture = Graphic3d_TextureUnit_7;
+ static const Graphic3d_TextureUnit OpenGl_RT_GeometryTriangTexture = Graphic3d_TextureUnit_8;
+
+ static const Graphic3d_TextureUnit OpenGl_RT_RaytraceMaterialTexture = Graphic3d_TextureUnit_9;
+ static const Graphic3d_TextureUnit OpenGl_RT_RaytraceLightSrcTexture = Graphic3d_TextureUnit_10;
+
+ static const Graphic3d_TextureUnit OpenGl_RT_FsaaInputTexture = Graphic3d_TextureUnit_11;
+ static const Graphic3d_TextureUnit OpenGl_RT_PrevAccumTexture = Graphic3d_TextureUnit_12;
+
+ static const Graphic3d_TextureUnit OpenGl_RT_RaytraceDepthTexture = Graphic3d_TextureUnit_13;
+}
+
// =======================================================================
// function : updateRaytraceGeometry
// purpose : Updates 3D scene geometry for ray-tracing
// modifications. This is light-weight procedure performed on each frame
if (theMode == OpenGl_GUM_CHECK)
{
- if (myLayerListState != myZLayers.ModificationState())
+ if (myRaytraceLayerListState != myZLayers.ModificationStateOfRaytracable())
{
return updateRaytraceGeometry (OpenGl_GUM_PREPARE, theViewId, theGlContext);
}
// of changes in OpenGL scene (only for path tracing)
std::set<Standard_Integer> aNonRaytraceIDs;
- const OpenGl_Layer& aLayer = myZLayers.Layer (Graphic3d_ZLayerId_Default);
-
- if (aLayer.NbStructures() != 0)
+ for (NCollection_List<Handle(Graphic3d_Layer)>::Iterator aLayerIter (myZLayers.Layers()); aLayerIter.More(); aLayerIter.Next())
{
- const OpenGl_ArrayOfIndexedMapOfStructure& aStructArray = aLayer.ArrayOfStructures();
+ const Handle(OpenGl_Layer)& aLayer = aLayerIter.Value();
+ if (aLayer->NbStructures() == 0
+ || !aLayer->LayerSettings().IsRaytracable()
+ || aLayer->LayerSettings().IsImmediate())
+ {
+ continue;
+ }
+ const Graphic3d_ArrayOfIndexedMapOfStructure& aStructArray = aLayer->ArrayOfStructures();
for (Standard_Integer anIndex = 0; anIndex < aStructArray.Length(); ++anIndex)
{
- for (OpenGl_IndexedMapOfStructure::Iterator aStructIt (aStructArray (anIndex)); aStructIt.More(); aStructIt.Next())
+ for (OpenGl_Structure::StructIterator aStructIt (aStructArray.Value (anIndex)); aStructIt.More(); aStructIt.Next())
{
const OpenGl_Structure* aStructure = aStructIt.Value();
continue;
}
- for (OpenGl_Structure::GroupIterator aGroupIter (aStructure->DrawGroups()); aGroupIter.More(); aGroupIter.Next())
+ for (OpenGl_Structure::GroupIterator aGroupIter (aStructure->Groups()); aGroupIter.More(); aGroupIter.Next())
{
// Extract OpenGL elements from the group (primitives arrays)
for (const OpenGl_ElementNode* aNode = aGroupIter.Value()->FirstNode(); aNode != NULL; aNode = aNode->next)
}
// Actualize OpenGL layer list state
- myLayerListState = myZLayers.ModificationState();
+ myRaytraceLayerListState = myZLayers.ModificationStateOfRaytracable();
// Rebuild two-level acceleration structure
myRaytraceGeometry.ProcessAcceleration();
}
if (toRestart)
+ {
myAccumFrames = 0;
+ }
myNonRaytraceStructureIDs = aNonRaytraceIDs;
}
void buildTextureTransform (const Handle(Graphic3d_TextureParams)& theParams, BVH_Mat4f& theMatrix)
{
theMatrix.InitIdentity();
+ if (theParams.IsNull())
+ {
+ return;
+ }
// Apply scaling
const Graphic3d_Vec2& aScale = theParams->Scale();
// function : convertMaterial
// purpose : Creates ray-tracing material properties
// =======================================================================
-OpenGl_RaytraceMaterial OpenGl_View::convertMaterial (const OpenGl_AspectFace* theAspect,
+OpenGl_RaytraceMaterial OpenGl_View::convertMaterial (const OpenGl_Aspects* theAspect,
const Handle(OpenGl_Context)& theGlContext)
{
- OpenGl_RaytraceMaterial theMaterial;
-
- const OPENGL_SURF_PROP& aProperties = theAspect->IntFront();
-
- theMaterial.Ambient = BVH_Vec4f (
- (aProperties.isphysic ? aProperties.ambcol.rgb[0] : aProperties.matcol.rgb[0]) * aProperties.amb,
- (aProperties.isphysic ? aProperties.ambcol.rgb[1] : aProperties.matcol.rgb[1]) * aProperties.amb,
- (aProperties.isphysic ? aProperties.ambcol.rgb[2] : aProperties.matcol.rgb[2]) * aProperties.amb,
- 1.f);
-
- theMaterial.Diffuse = BVH_Vec4f (
- (aProperties.isphysic ? aProperties.difcol.rgb[0] : aProperties.matcol.rgb[0]) * aProperties.diff,
- (aProperties.isphysic ? aProperties.difcol.rgb[1] : aProperties.matcol.rgb[1]) * aProperties.diff,
- (aProperties.isphysic ? aProperties.difcol.rgb[2] : aProperties.matcol.rgb[2]) * aProperties.diff,
- -1.f /* no texture */);
-
- theMaterial.Specular = BVH_Vec4f (
- (aProperties.isphysic ? aProperties.speccol.rgb[0] : 1.f) * aProperties.spec,
- (aProperties.isphysic ? aProperties.speccol.rgb[1] : 1.f) * aProperties.spec,
- (aProperties.isphysic ? aProperties.speccol.rgb[2] : 1.f) * aProperties.spec,
- aProperties.shine);
-
- theMaterial.Emission = BVH_Vec4f (
- (aProperties.isphysic ? aProperties.emscol.rgb[0] : aProperties.matcol.rgb[0]) * aProperties.emsv,
- (aProperties.isphysic ? aProperties.emscol.rgb[1] : aProperties.matcol.rgb[1]) * aProperties.emsv,
- (aProperties.isphysic ? aProperties.emscol.rgb[2] : aProperties.matcol.rgb[2]) * aProperties.emsv,
- 1.f);
-
- theMaterial.Transparency = BVH_Vec4f (aProperties.trans,
- 1.f - aProperties.trans,
- aProperties.index == 0 ? 1.f : aProperties.index,
- aProperties.index == 0 ? 1.f : 1.f / aProperties.index);
-
- const Standard_ShortReal aMaxRefl = Max (theMaterial.Diffuse.x() + theMaterial.Specular.x(),
- Max (theMaterial.Diffuse.y() + theMaterial.Specular.y(),
- theMaterial.Diffuse.z() + theMaterial.Specular.z()));
-
- const Standard_ShortReal aReflectionScale = 0.75f / aMaxRefl;
-
- theMaterial.Reflection = BVH_Vec4f (
- aProperties.speccol.rgb[0] * aProperties.spec * aReflectionScale,
- aProperties.speccol.rgb[1] * aProperties.spec * aReflectionScale,
- aProperties.speccol.rgb[2] * aProperties.spec * aReflectionScale,
- 0.f);
+ OpenGl_RaytraceMaterial aResMat;
+
+ const Graphic3d_MaterialAspect& aSrcMat = theAspect->Aspect()->FrontMaterial();
+ const OpenGl_Vec3& aMatCol = theAspect->Aspect()->InteriorColor();
+ const float aShine = 128.0f * float(aSrcMat.Shininess());
+
+ const OpenGl_Vec3& aSrcAmb = aSrcMat.AmbientColor();
+ const OpenGl_Vec3& aSrcDif = aSrcMat.DiffuseColor();
+ const OpenGl_Vec3& aSrcSpe = aSrcMat.SpecularColor();
+ const OpenGl_Vec3& aSrcEms = aSrcMat.EmissiveColor();
+ switch (aSrcMat.MaterialType())
+ {
+ case Graphic3d_MATERIAL_ASPECT:
+ {
+ aResMat.Ambient .SetValues (aSrcAmb * aMatCol, 1.0f);
+ aResMat.Diffuse .SetValues (aSrcDif * aMatCol, -1.0f); // -1 is no texture
+ aResMat.Emission.SetValues (aSrcEms * aMatCol, 1.0f);
+ break;
+ }
+ case Graphic3d_MATERIAL_PHYSIC:
+ {
+ aResMat.Ambient .SetValues (aSrcAmb, 1.0f);
+ aResMat.Diffuse .SetValues (aSrcDif, -1.0f); // -1 is no texture
+ aResMat.Emission.SetValues (aSrcEms, 1.0f);
+ break;
+ }
+ }
+
+ {
+ // interior color is always ignored for Specular
+ aResMat.Specular.SetValues (aSrcSpe, aShine);
+ const Standard_ShortReal aMaxRefl = Max (aResMat.Diffuse.x() + aResMat.Specular.x(),
+ Max (aResMat.Diffuse.y() + aResMat.Specular.y(),
+ aResMat.Diffuse.z() + aResMat.Specular.z()));
+ const Standard_ShortReal aReflectionScale = 0.75f / aMaxRefl;
+ aResMat.Reflection.SetValues (aSrcSpe * aReflectionScale, 0.0f);
+ }
+
+ const float anIndex = (float )aSrcMat.RefractionIndex();
+ aResMat.Transparency = BVH_Vec4f (aSrcMat.Alpha(), aSrcMat.Transparency(),
+ anIndex == 0 ? 1.0f : anIndex,
+ anIndex == 0 ? 1.0f : 1.0f / anIndex);
+
+ aResMat.Ambient = theGlContext->Vec4FromQuantityColor (aResMat.Ambient);
+ aResMat.Diffuse = theGlContext->Vec4FromQuantityColor (aResMat.Diffuse);
+ aResMat.Specular = theGlContext->Vec4FromQuantityColor (aResMat.Specular);
+ aResMat.Emission = theGlContext->Vec4FromQuantityColor (aResMat.Emission);
// Serialize physically-based material properties
- const Graphic3d_BSDF& aBSDF = aProperties.BSDF;
+ const Graphic3d_BSDF& aBSDF = aSrcMat.BSDF();
- theMaterial.BSDF.Le = BVH_Vec4f (aBSDF.Le, 0.f);
- theMaterial.BSDF.Kd = BVH_Vec4f (aBSDF.Kd, -1.f /* no tex */);
- theMaterial.BSDF.Kr = BVH_Vec4f (aBSDF.Kr, 0.f);
- theMaterial.BSDF.Kt = BVH_Vec4f (aBSDF.Kt, 0.f);
- theMaterial.BSDF.Ks = BVH_Vec4f (aBSDF.Ks, aBSDF.Roughness);
+ aResMat.BSDF.Kc = aBSDF.Kc;
+ aResMat.BSDF.Ks = aBSDF.Ks;
+ aResMat.BSDF.Kd = BVH_Vec4f (aBSDF.Kd, -1.0f); // no base color texture
+ aResMat.BSDF.Kt = BVH_Vec4f (aBSDF.Kt, -1.0f); // no metallic-roughness texture
+ aResMat.BSDF.Le = BVH_Vec4f (aBSDF.Le, -1.0f); // no emissive texture
- theMaterial.BSDF.Fresnel = aBSDF.Fresnel.Serialize();
+ aResMat.BSDF.Absorption = aBSDF.Absorption;
- theMaterial.BSDF.Absorption = BVH_Vec4f (aBSDF.AbsorptionColor,
- aBSDF.AbsorptionCoeff);
+ aResMat.BSDF.FresnelCoat = aBSDF.FresnelCoat.Serialize ();
+ aResMat.BSDF.FresnelBase = aBSDF.FresnelBase.Serialize ();
+ aResMat.BSDF.FresnelBase.w() = -1.0; // no normal map texture
// Handle material textures
- if (theAspect->DoTextureMap())
+ if (!theAspect->Aspect()->ToMapTexture())
{
- if (theGlContext->arbTexBindless != NULL)
- {
- buildTextureTransform (theAspect->TextureParams(), theMaterial.TextureTransform);
-
- // write texture ID to diffuse w-component
- theMaterial.Diffuse.w() = theMaterial.BSDF.Kd.w() =
- static_cast<Standard_ShortReal> (myRaytraceGeometry.AddTexture (theAspect->TextureRes (theGlContext)));
- }
- else if (!myIsRaytraceWarnTextures)
- {
- const TCollection_ExtendedString aWarnMessage =
- "Warning: texturing in Ray-Trace requires GL_ARB_bindless_texture extension which is missing. "
- "Please try to update graphics card driver. At the moment textures will be ignored.";
+ return aResMat;
+ }
- theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION,
- GL_DEBUG_TYPE_PORTABILITY, 0, GL_DEBUG_SEVERITY_HIGH, aWarnMessage);
+ const Handle(OpenGl_TextureSet)& aTextureSet = theAspect->TextureSet (theGlContext);
+ if (aTextureSet.IsNull()
+ || aTextureSet->IsEmpty()
+ || aTextureSet->First().IsNull())
+ {
+ return aResMat;
+ }
- myIsRaytraceWarnTextures = Standard_True;
+ if (theGlContext->HasRayTracingTextures())
+ {
+ // write texture ID to diffuse w-components
+ for (OpenGl_TextureSet::Iterator aTexIter (aTextureSet); aTexIter.More(); aTexIter.Next())
+ {
+ const Handle(OpenGl_Texture)& aTexture = aTexIter.Value();
+ if (aTexIter.Unit() == Graphic3d_TextureUnit_BaseColor)
+ {
+ buildTextureTransform (aTexture->Sampler()->Parameters(), aResMat.TextureTransform);
+ aResMat.Diffuse.w() = aResMat.BSDF.Kd.w() = static_cast<Standard_ShortReal> (myRaytraceGeometry.AddTexture (aTexture));
+ }
+ else if (aTexIter.Unit() == Graphic3d_TextureUnit_MetallicRoughness)
+ {
+ buildTextureTransform (aTexture->Sampler()->Parameters(), aResMat.TextureTransform);
+ aResMat.BSDF.Kt.w() = static_cast<Standard_ShortReal> (myRaytraceGeometry.AddTexture (aTexture));
+ }
+ else if (aTexIter.Unit() == Graphic3d_TextureUnit_Emissive)
+ {
+ buildTextureTransform (aTexture->Sampler()->Parameters(), aResMat.TextureTransform);
+ aResMat.BSDF.Le.w() = static_cast<Standard_ShortReal> (myRaytraceGeometry.AddTexture (aTexture));
+ }
+ else if (aTexIter.Unit() == Graphic3d_TextureUnit_Normal)
+ {
+ buildTextureTransform (aTexture->Sampler()->Parameters(), aResMat.TextureTransform);
+ aResMat.BSDF.FresnelBase.w() = static_cast<Standard_ShortReal> (myRaytraceGeometry.AddTexture (aTexture));
+ }
}
}
+ else if (!myIsRaytraceWarnTextures)
+ {
+ theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_PORTABILITY, 0, GL_DEBUG_SEVERITY_HIGH,
+ "Warning: texturing in Ray-Trace requires GL_ARB_bindless_texture extension which is missing. "
+ "Please try to update graphics card driver. At the moment textures will be ignored.");
+ myIsRaytraceWarnTextures = Standard_True;
+ }
- return theMaterial;
+ return aResMat;
}
// =======================================================================
// Get structure material
OpenGl_RaytraceMaterial aDefaultMaterial;
- Standard_Boolean aResult = addRaytraceGroups (theStructure, aDefaultMaterial, &theStructure->Transformation, theGlContext);
+ Standard_Boolean aResult = addRaytraceGroups (theStructure, aDefaultMaterial, theStructure->Transformation(), theGlContext);
// Process all connected OpenGL structures
const OpenGl_Structure* anInstanced = theStructure->InstancedStructure();
if (anInstanced != NULL && anInstanced->IsRaytracable())
{
- aResult &= addRaytraceGroups (anInstanced, aDefaultMaterial, &theStructure->Transformation, theGlContext);
+ aResult &= addRaytraceGroups (anInstanced, aDefaultMaterial, theStructure->Transformation(), theGlContext);
}
myStructureStates[theStructure] = StructState (theStructure);
// =======================================================================
Standard_Boolean OpenGl_View::addRaytraceGroups (const OpenGl_Structure* theStructure,
const OpenGl_RaytraceMaterial& theStructMat,
- const Graphic3d_Mat4* theTransform,
+ const Handle(TopLoc_Datum3D)& theTrsf,
const Handle(OpenGl_Context)& theGlContext)
{
- for (OpenGl_Structure::GroupIterator aGroupIter (theStructure->DrawGroups()); aGroupIter.More(); aGroupIter.Next())
+ OpenGl_Mat4 aMat4;
+ for (OpenGl_Structure::GroupIterator aGroupIter (theStructure->Groups()); aGroupIter.More(); aGroupIter.Next())
{
// Get group material
OpenGl_RaytraceMaterial aGroupMaterial;
- if (aGroupIter.Value()->AspectFace() != NULL)
+ if (aGroupIter.Value()->GlAspects() != NULL)
{
- aGroupMaterial = convertMaterial (
- aGroupIter.Value()->AspectFace(), theGlContext);
+ aGroupMaterial = convertMaterial (aGroupIter.Value()->GlAspects(), theGlContext);
}
Standard_Integer aMatID = static_cast<Standard_Integer> (myRaytraceGeometry.Materials.size());
// Use group material if available, otherwise use structure material
- myRaytraceGeometry.Materials.push_back (
- aGroupIter.Value()->AspectFace() != NULL ? aGroupMaterial : theStructMat);
+ myRaytraceGeometry.Materials.push_back (aGroupIter.Value()->GlAspects() != NULL ? aGroupMaterial : theStructMat);
// Add OpenGL elements from group (extract primitives arrays and aspects)
for (const OpenGl_ElementNode* aNode = aGroupIter.Value()->FirstNode(); aNode != NULL; aNode = aNode->next)
{
- OpenGl_AspectFace* anAspect = dynamic_cast<OpenGl_AspectFace*> (aNode->elem);
+ OpenGl_Aspects* anAspect = dynamic_cast<OpenGl_Aspects*> (aNode->elem);
if (anAspect != NULL)
{
if (aSetIter != myArrayToTrianglesMap.end())
{
OpenGl_TriangleSet* aSet = aSetIter->second;
-
- BVH_Transform<Standard_ShortReal, 4>* aTransform = new BVH_Transform<Standard_ShortReal, 4>();
-
- if (theTransform != NULL)
+ opencascade::handle<BVH_Transform<Standard_ShortReal, 4> > aTransform = new BVH_Transform<Standard_ShortReal, 4>();
+ if (!theTrsf.IsNull())
{
- aTransform->SetTransform (*theTransform);
+ theTrsf->Trsf().GetMat4 (aMat4);
+ aTransform->SetTransform (aMat4);
}
aSet->SetProperties (aTransform);
-
if (aSet->MaterialIndex() != OpenGl_TriangleSet::INVALID_MATERIAL && aSet->MaterialIndex() != aMatID)
{
aSet->SetMaterialIndex (aMatID);
}
else
{
- NCollection_Handle<BVH_Object<Standard_ShortReal, 3> > aSet =
- addRaytracePrimitiveArray (aPrimArray, aMatID, 0);
-
- if (!aSet.IsNull())
+ if (Handle(OpenGl_TriangleSet) aSet = addRaytracePrimitiveArray (aPrimArray, aMatID, 0))
{
- BVH_Transform<Standard_ShortReal, 4>* aTransform = new BVH_Transform<Standard_ShortReal, 4>;
-
- if (theTransform != NULL)
+ opencascade::handle<BVH_Transform<Standard_ShortReal, 4> > aTransform = new BVH_Transform<Standard_ShortReal, 4>();
+ if (!theTrsf.IsNull())
{
- aTransform->SetTransform (*theTransform);
+ theTrsf->Trsf().GetMat4 (aMat4);
+ aTransform->SetTransform (aMat4);
}
aSet->SetProperties (aTransform);
-
myRaytraceGeometry.Objects().Append (aSet);
}
}
// function : addRaytracePrimitiveArray
// purpose : Adds OpenGL primitive array to ray-traced scene geometry
// =======================================================================
-OpenGl_TriangleSet* OpenGl_View::addRaytracePrimitiveArray (const OpenGl_PrimitiveArray* theArray,
- const Standard_Integer theMaterial,
- const OpenGl_Mat4* theTransform)
+Handle(OpenGl_TriangleSet) OpenGl_View::addRaytracePrimitiveArray (const OpenGl_PrimitiveArray* theArray,
+ const Standard_Integer theMaterial,
+ const OpenGl_Mat4* theTransform)
{
const Handle(Graphic3d_BoundBuffer)& aBounds = theArray->Bounds();
const Handle(Graphic3d_IndexBuffer)& anIndices = theArray->Indices();
#endif
|| anAttribs.IsNull())
{
- return NULL;
+ return Handle(OpenGl_TriangleSet)();
}
OpenGl_Mat4 aNormalMatrix;
-
if (theTransform != NULL)
{
Standard_ASSERT_RETURN (theTransform->Inverted (aNormalMatrix),
aNormalMatrix.Transpose();
}
- OpenGl_TriangleSet* aSet = new OpenGl_TriangleSet (theArray->GetUID());
+ Handle(OpenGl_TriangleSet) aSet = new OpenGl_TriangleSet (theArray->GetUID(), myRaytraceBVHBuilder);
{
aSet->Vertices.reserve (anAttribs->NbElements);
aSet->Normals.reserve (anAttribs->NbElements);
const size_t aVertFrom = aSet->Vertices.size();
- for (Standard_Integer anAttribIter = 0; anAttribIter < anAttribs->NbAttributes; ++anAttribIter)
+ Standard_Integer anAttribIndex = 0;
+ Standard_Size anAttribStride = 0;
+ if (const Standard_Byte* aPosData = anAttribs->AttributeData (Graphic3d_TOA_POS, anAttribIndex, anAttribStride))
{
- const Graphic3d_Attribute& anAttrib = anAttribs->Attribute (anAttribIter);
- const size_t anOffset = anAttribs->AttributeOffset (anAttribIter);
- if (anAttrib.Id == Graphic3d_TOA_POS)
+ const Graphic3d_Attribute& anAttrib = anAttribs->Attribute (anAttribIndex);
+ if (anAttrib.DataType == Graphic3d_TOD_VEC2
+ || anAttrib.DataType == Graphic3d_TOD_VEC3
+ || anAttrib.DataType == Graphic3d_TOD_VEC4)
{
- if (anAttrib.DataType == Graphic3d_TOD_VEC3
- || anAttrib.DataType == Graphic3d_TOD_VEC4)
- {
- for (Standard_Integer aVertIter = 0; aVertIter < anAttribs->NbElements; ++aVertIter)
- {
- aSet->Vertices.push_back (
- *reinterpret_cast<const Graphic3d_Vec3*> (anAttribs->value (aVertIter) + anOffset));
- }
- }
- else if (anAttrib.DataType == Graphic3d_TOD_VEC2)
+ for (Standard_Integer aVertIter = 0; aVertIter < anAttribs->NbElements; ++aVertIter)
{
- for (Standard_Integer aVertIter = 0; aVertIter < anAttribs->NbElements; ++aVertIter)
- {
- const Standard_ShortReal* aCoords =
- reinterpret_cast<const Standard_ShortReal*> (anAttribs->value (aVertIter) + anOffset);
-
- aSet->Vertices.push_back (BVH_Vec3f (aCoords[0], aCoords[1], 0.0f));
- }
+ const float* aCoords = reinterpret_cast<const float*> (aPosData + anAttribStride * aVertIter);
+ aSet->Vertices.push_back (BVH_Vec3f (aCoords[0], aCoords[1], anAttrib.DataType != Graphic3d_TOD_VEC2 ? aCoords[2] : 0.0f));
}
}
- else if (anAttrib.Id == Graphic3d_TOA_NORM)
+ }
+ if (const Standard_Byte* aNormData = anAttribs->AttributeData (Graphic3d_TOA_NORM, anAttribIndex, anAttribStride))
+ {
+ const Graphic3d_Attribute& anAttrib = anAttribs->Attribute (anAttribIndex);
+ if (anAttrib.DataType == Graphic3d_TOD_VEC3
+ || anAttrib.DataType == Graphic3d_TOD_VEC4)
{
- if (anAttrib.DataType == Graphic3d_TOD_VEC3
- || anAttrib.DataType == Graphic3d_TOD_VEC4)
+ for (Standard_Integer aVertIter = 0; aVertIter < anAttribs->NbElements; ++aVertIter)
{
- for (Standard_Integer aVertIter = 0; aVertIter < anAttribs->NbElements; ++aVertIter)
- {
- aSet->Normals.push_back (
- *reinterpret_cast<const Graphic3d_Vec3*> (anAttribs->value (aVertIter) + anOffset));
- }
+ aSet->Normals.push_back (*reinterpret_cast<const Graphic3d_Vec3*> (aNormData + anAttribStride * aVertIter));
}
}
- else if (anAttrib.Id == Graphic3d_TOA_UV)
+ }
+ if (const Standard_Byte* aTexData = anAttribs->AttributeData (Graphic3d_TOA_UV, anAttribIndex, anAttribStride))
+ {
+ const Graphic3d_Attribute& anAttrib = anAttribs->Attribute (anAttribIndex);
+ if (anAttrib.DataType == Graphic3d_TOD_VEC2)
{
- if (anAttrib.DataType == Graphic3d_TOD_VEC2)
+ for (Standard_Integer aVertIter = 0; aVertIter < anAttribs->NbElements; ++aVertIter)
{
- for (Standard_Integer aVertIter = 0; aVertIter < anAttribs->NbElements; ++aVertIter)
- {
- aSet->TexCrds.push_back (
- *reinterpret_cast<const Graphic3d_Vec2*> (anAttribs->value (aVertIter) + anOffset));
- }
+ aSet->TexCrds.push_back (*reinterpret_cast<const Graphic3d_Vec2*> (aTexData + anAttribStride * aVertIter));
}
}
}
if (!addRaytraceVertexIndices (*aSet, theMaterial, aVertNum, aBoundStart, *theArray))
{
- delete aSet;
- return NULL;
+ aSet.Nullify();
+ return Handle(OpenGl_TriangleSet)();
}
aBoundStart += aVertNum;
if (!addRaytraceVertexIndices (*aSet, theMaterial, aVertNum, 0, *theArray))
{
- delete aSet;
- return NULL;
+ aSet.Nullify();
+ return Handle(OpenGl_TriangleSet)();
}
}
}
}
// =======================================================================
-// function : Load
+// function : LoadFromFiles
// purpose : Loads shader source from specified files
// =======================================================================
-Standard_Boolean OpenGl_View::ShaderSource::Load (const TCollection_AsciiString* theFileNames,
- const TCollection_AsciiString& thePrefix)
+Standard_Boolean OpenGl_View::ShaderSource::LoadFromFiles (const TCollection_AsciiString* theFileNames,
+ const TCollection_AsciiString& thePrefix)
{
myError.Clear();
mySource.Clear();
+ myPrefix = thePrefix;
+
TCollection_AsciiString aMissingFiles;
for (Standard_Integer anIndex = 0; !theFileNames[anIndex].IsEmpty(); ++anIndex)
{
aFile.Close();
}
- myPrefix = thePrefix;
if (!aMissingFiles.IsEmpty())
{
myError = TCollection_AsciiString("Shader files ") + aMissingFiles + " are missing or inaccessible";
return Standard_True;
}
+// =======================================================================
+// function : LoadFromStrings
+// purpose :
+// =======================================================================
+Standard_Boolean OpenGl_View::ShaderSource::LoadFromStrings (const TCollection_AsciiString* theStrings,
+ const TCollection_AsciiString& thePrefix)
+{
+ myError.Clear();
+ mySource.Clear();
+ myPrefix = thePrefix;
+
+ for (Standard_Integer anIndex = 0; !theStrings[anIndex].IsEmpty(); ++anIndex)
+ {
+ TCollection_AsciiString aSource = theStrings[anIndex];
+ if (!aSource.IsEmpty())
+ {
+ mySource += TCollection_AsciiString ("\n") + aSource;
+ }
+ }
+ return Standard_True;
+}
+
// =======================================================================
// function : generateShaderPrefix
// purpose : Generates shader prefix based on current ray-tracing options
{
aPrefixString += TCollection_AsciiString ("\n#define TRANSPARENT_SHADOWS");
}
+ if (!theGlContext->ToRenderSRGB())
+ {
+ aPrefixString += TCollection_AsciiString ("\n#define THE_SHIFT_sRGB");
+ }
// If OpenGL driver supports bindless textures and texturing
// is actually used, activate texturing in ray-tracing mode
TCollection_AsciiString ("\n#define MAX_TEX_NUMBER ") + TCollection_AsciiString (OpenGl_RaytraceGeometry::MAX_TEX_NUMBER);
}
- if (myRaytraceParameters.GlobalIllumination)
+ if (myRaytraceParameters.GlobalIllumination) // path tracing activated
{
aPrefixString += TCollection_AsciiString ("\n#define PATH_TRACING");
+
+ if (myRaytraceParameters.AdaptiveScreenSampling) // adaptive screen sampling requested
+ {
+ if (theGlContext->IsGlGreaterEqual (4, 4))
+ {
+ aPrefixString += TCollection_AsciiString ("\n#define ADAPTIVE_SAMPLING");
+ if (myRaytraceParameters.AdaptiveScreenSamplingAtomic
+ && theGlContext->CheckExtension ("GL_NV_shader_atomic_float"))
+ {
+ aPrefixString += TCollection_AsciiString ("\n#define ADAPTIVE_SAMPLING_ATOMIC");
+ }
+ }
+ }
+
+ if (myRaytraceParameters.TwoSidedBsdfModels) // two-sided BSDFs requested
+ {
+ aPrefixString += TCollection_AsciiString ("\n#define TWO_SIDED_BXDF");
+ }
+
+ switch (myRaytraceParameters.ToneMappingMethod)
+ {
+ case Graphic3d_ToneMappingMethod_Disabled:
+ break;
+ case Graphic3d_ToneMappingMethod_Filmic:
+ aPrefixString += TCollection_AsciiString ("\n#define TONE_MAPPING_FILMIC");
+ break;
+ }
+ }
+
+ if (myRaytraceParameters.ToIgnoreNormalMap)
+ {
+ aPrefixString += TCollection_AsciiString("\n#define IGNORE_NORMAL_MAP");
+ }
+
+ if (myRaytraceParameters.CubemapForBack)
+ {
+ aPrefixString += TCollection_AsciiString("\n#define BACKGROUND_CUBEMAP");
+ }
+
+ if (myRaytraceParameters.DepthOfField)
+ {
+ aPrefixString += TCollection_AsciiString("\n#define DEPTH_OF_FIELD");
}
return aPrefixString;
const Handle(OpenGl_Context)& theGlContext)
{
Handle(OpenGl_ShaderObject) aShader = new OpenGl_ShaderObject (theType);
-
if (!aShader->Create (theGlContext))
{
- const TCollection_ExtendedString aMessage = TCollection_ExtendedString ("Error: Failed to create ") +
- (theType == GL_VERTEX_SHADER ? "vertex" : "fragment") + " shader object";
-
- theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION,
- GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, aMessage);
-
- aShader->Release (theGlContext.operator->());
-
- return Handle(OpenGl_ShaderObject)();
- }
-
- if (!aShader->LoadSource (theGlContext, theSource.Source()))
- {
- const TCollection_ExtendedString aMessage = TCollection_ExtendedString ("Error: Failed to set ") +
- (theType == GL_VERTEX_SHADER ? "vertex" : "fragment") + " shader source";
-
- theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION,
- GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, aMessage);
-
- aShader->Release (theGlContext.operator->());
-
+ theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH,
+ TCollection_ExtendedString ("Error: Failed to create ") +
+ (theType == GL_VERTEX_SHADER ? "vertex" : "fragment") + " shader object");
+ aShader->Release (theGlContext.get());
return Handle(OpenGl_ShaderObject)();
}
- TCollection_AsciiString aBuildLog;
-
- if (!aShader->Compile (theGlContext))
+ if (!aShader->LoadAndCompile (theGlContext, "", theSource.Source()))
{
- aShader->FetchInfoLog (theGlContext, aBuildLog);
-
- const TCollection_ExtendedString aMessage = TCollection_ExtendedString ("Error: Failed to compile ") +
- (theType == GL_VERTEX_SHADER ? "vertex" : "fragment") + " shader object:\n" + aBuildLog;
-
- theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION,
- GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, aMessage);
-
- aShader->Release (theGlContext.operator->());
-
+ aShader->Release (theGlContext.get());
return Handle(OpenGl_ShaderObject)();
}
- else if (theGlContext->caps->glslWarnings)
- {
- aShader->FetchInfoLog (theGlContext, aBuildLog);
-
- if (!aBuildLog.IsEmpty() && !aBuildLog.IsEqual ("No errors.\n"))
- {
- const TCollection_ExtendedString aMessage = TCollection_ExtendedString (theType == GL_VERTEX_SHADER ?
- "Vertex" : "Fragment") + " shader was compiled with following warnings:\n" + aBuildLog;
-
- theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION,
- GL_DEBUG_TYPE_PORTABILITY, 0, GL_DEBUG_SEVERITY_LOW, aMessage);
- }
- }
-
return aShader;
}
// =======================================================================
Handle(OpenGl_ShaderProgram) OpenGl_View::initProgram (const Handle(OpenGl_Context)& theGlContext,
const Handle(OpenGl_ShaderObject)& theVertShader,
- const Handle(OpenGl_ShaderObject)& theFragShader)
+ const Handle(OpenGl_ShaderObject)& theFragShader,
+ const TCollection_AsciiString& theName)
{
- Handle(OpenGl_ShaderProgram) aProgram = new OpenGl_ShaderProgram;
+ const TCollection_AsciiString anId = TCollection_AsciiString("occt_rt_") + theName;
+ Handle(OpenGl_ShaderProgram) aProgram = new OpenGl_ShaderProgram(Handle(Graphic3d_ShaderProgram)(), anId);
if (!aProgram->Create (theGlContext))
{
// function : initRaytraceResources
// purpose : Initializes OpenGL/GLSL shader programs
// =======================================================================
-Standard_Boolean OpenGl_View::initRaytraceResources (const Handle(OpenGl_Context)& theGlContext)
+Standard_Boolean OpenGl_View::initRaytraceResources (const Standard_Integer theSizeX,
+ const Standard_Integer theSizeY,
+ const Handle(OpenGl_Context)& theGlContext)
{
if (myRaytraceInitStatus == OpenGl_RT_FAIL)
{
Standard_Boolean aToRebuildShaders = Standard_False;
+ if (myRenderParams.RebuildRayTracingShaders) // requires complete re-initialization
+ {
+ myRaytraceInitStatus = OpenGl_RT_NONE;
+ releaseRaytraceResources (theGlContext, Standard_True);
+ myRenderParams.RebuildRayTracingShaders = Standard_False; // clear rebuilding flag
+ }
+
if (myRaytraceInitStatus == OpenGl_RT_INIT)
{
if (!myIsRaytraceDataValid)
+ {
return Standard_True;
+ }
const Standard_Integer aRequiredStackSize =
- myRaytraceGeometry.HighLevelTreeDepth() + myRaytraceGeometry.BottomLevelTreeDepth();
+ myRaytraceGeometry.TopLevelTreeDepth() + myRaytraceGeometry.BotLevelTreeDepth();
if (myRaytraceParameters.StackSize < aRequiredStackSize)
{
}
}
- if (myRenderParams.RaytracingDepth != myRaytraceParameters.NbBounces)
+ if (myRenderParams.RaytracingDepth != myRaytraceParameters.NbBounces
+ || myRenderParams.IsTransparentShadowEnabled != myRaytraceParameters.TransparentShadows
+ || myRenderParams.IsGlobalIlluminationEnabled != myRaytraceParameters.GlobalIllumination
+ || myRenderParams.TwoSidedBsdfModels != myRaytraceParameters.TwoSidedBsdfModels
+ || myRaytraceGeometry.HasTextures() != myRaytraceParameters.UseBindlessTextures
+ || myRenderParams.ToIgnoreNormalMapInRayTracing != myRaytraceParameters.ToIgnoreNormalMap)
{
- myRaytraceParameters.NbBounces = myRenderParams.RaytracingDepth;
+ myRaytraceParameters.NbBounces = myRenderParams.RaytracingDepth;
+ myRaytraceParameters.TransparentShadows = myRenderParams.IsTransparentShadowEnabled;
+ myRaytraceParameters.GlobalIllumination = myRenderParams.IsGlobalIlluminationEnabled;
+ myRaytraceParameters.TwoSidedBsdfModels = myRenderParams.TwoSidedBsdfModels;
+ myRaytraceParameters.UseBindlessTextures = myRaytraceGeometry.HasTextures();
+ myRaytraceParameters.ToIgnoreNormalMap = myRenderParams.ToIgnoreNormalMapInRayTracing;
aToRebuildShaders = Standard_True;
}
- if (myRaytraceGeometry.HasTextures() != myRaytraceParameters.UseBindlessTextures)
+ if (myRenderParams.AdaptiveScreenSampling != myRaytraceParameters.AdaptiveScreenSampling
+ || myRenderParams.AdaptiveScreenSamplingAtomic != myRaytraceParameters.AdaptiveScreenSamplingAtomic)
{
- myRaytraceParameters.UseBindlessTextures = myRaytraceGeometry.HasTextures();
+ myRaytraceParameters.AdaptiveScreenSampling = myRenderParams.AdaptiveScreenSampling;
+ myRaytraceParameters.AdaptiveScreenSamplingAtomic = myRenderParams.AdaptiveScreenSamplingAtomic;
+ if (myRenderParams.AdaptiveScreenSampling) // adaptive sampling was requested
+ {
+ if (!theGlContext->HasRayTracingAdaptiveSampling())
+ {
+ // disable the feature if it is not supported
+ myRaytraceParameters.AdaptiveScreenSampling = myRenderParams.AdaptiveScreenSampling = Standard_False;
+ theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_PORTABILITY, 0, GL_DEBUG_SEVERITY_LOW,
+ "Adaptive sampling is not supported (OpenGL 4.4 is missing)");
+ }
+ else if (myRaytraceParameters.AdaptiveScreenSamplingAtomic
+ && !theGlContext->HasRayTracingAdaptiveSamplingAtomic())
+ {
+ // disable the feature if it is not supported
+ myRaytraceParameters.AdaptiveScreenSamplingAtomic = myRenderParams.AdaptiveScreenSamplingAtomic = Standard_False;
+ theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_PORTABILITY, 0, GL_DEBUG_SEVERITY_LOW,
+ "Atomic adaptive sampling is not supported (GL_NV_shader_atomic_float is missing)");
+ }
+ }
+
aToRebuildShaders = Standard_True;
}
+ myTileSampler.SetSize (myRenderParams, myRaytraceParameters.AdaptiveScreenSampling ? Graphic3d_Vec2i (theSizeX, theSizeY) : Graphic3d_Vec2i (0, 0));
- if (myRenderParams.IsTransparentShadowEnabled != myRaytraceParameters.TransparentShadows)
+ const bool isCubemapForBack = !myBackgroundCubeMap.IsNull();
+ if (myRaytraceParameters.CubemapForBack != isCubemapForBack)
{
- myRaytraceParameters.TransparentShadows = myRenderParams.IsTransparentShadowEnabled;
+ myRaytraceParameters.CubemapForBack = isCubemapForBack;
aToRebuildShaders = Standard_True;
}
- if (myRenderParams.IsGlobalIlluminationEnabled != myRaytraceParameters.GlobalIllumination)
+ const bool toEnableDof = !myCamera->IsOrthographic() && myRaytraceParameters.GlobalIllumination;
+ if (myRaytraceParameters.DepthOfField != toEnableDof)
{
- myRaytraceParameters.GlobalIllumination = myRenderParams.IsGlobalIlluminationEnabled;
+ myRaytraceParameters.DepthOfField = toEnableDof;
aToRebuildShaders = Standard_True;
}
+ if (myRenderParams.ToneMappingMethod != myRaytraceParameters.ToneMappingMethod)
+ {
+ myRaytraceParameters.ToneMappingMethod = myRenderParams.ToneMappingMethod;
+ aToRebuildShaders = true;
+ }
+
if (aToRebuildShaders)
{
// Reject accumulated frames
myAccumFrames = 0;
- // We need to update environment texture
+ // Environment map should be updated
myToUpdateEnvironmentMap = Standard_True;
- TCollection_AsciiString aPrefixString = generateShaderPrefix (theGlContext);
+ const TCollection_AsciiString aPrefixString = generateShaderPrefix (theGlContext);
#ifdef RAY_TRACE_PRINT_INFO
std::cout << "GLSL prefix string:" << std::endl << aPrefixString << std::endl;
myRaytraceShaderSource.SetPrefix (aPrefixString);
myPostFSAAShaderSource.SetPrefix (aPrefixString);
+ myOutImageShaderSource.SetPrefix (aPrefixString);
- if (!myRaytraceShader->LoadSource (theGlContext, myRaytraceShaderSource.Source())
- || !myPostFSAAShader->LoadSource (theGlContext, myPostFSAAShaderSource.Source()))
- {
- return safeFailBack ("Failed to load source into ray-tracing fragment shaders", theGlContext);
- }
-
- if (!myRaytraceShader->Compile (theGlContext)
- || !myPostFSAAShader->Compile (theGlContext))
+ if (!myRaytraceShader->LoadAndCompile (theGlContext, myRaytraceProgram->ResourceId(), myRaytraceShaderSource.Source())
+ || !myPostFSAAShader->LoadAndCompile (theGlContext, myPostFSAAProgram->ResourceId(), myPostFSAAShaderSource.Source())
+ || !myOutImageShader->LoadAndCompile (theGlContext, myOutImageProgram->ResourceId(), myOutImageShaderSource.Source()))
{
return safeFailBack ("Failed to compile ray-tracing fragment shaders", theGlContext);
}
myRaytraceProgram->SetAttributeName (theGlContext, Graphic3d_TOA_POS, "occVertex");
myPostFSAAProgram->SetAttributeName (theGlContext, Graphic3d_TOA_POS, "occVertex");
+ myOutImageProgram->SetAttributeName (theGlContext, Graphic3d_TOA_POS, "occVertex");
+
if (!myRaytraceProgram->Link (theGlContext)
- || !myPostFSAAProgram->Link (theGlContext))
+ || !myPostFSAAProgram->Link (theGlContext)
+ || !myOutImageProgram->Link (theGlContext))
{
return safeFailBack ("Failed to initialize vertex attributes for ray-tracing program", theGlContext);
}
if (myRaytraceInitStatus == OpenGl_RT_NONE)
{
+ myAccumFrames = 0; // accumulation should be restarted
+
if (!theGlContext->IsGlGreaterEqual (3, 1))
{
return safeFailBack ("Ray-tracing requires OpenGL 3.1 and higher", theGlContext);
myRaytraceParameters.NbBounces = myRenderParams.RaytracingDepth;
- TCollection_AsciiString aFolder = Graphic3d_ShaderProgram::ShadersFolder();
-
- if (aFolder.IsEmpty())
- {
- return safeFailBack ("Failed to locate shaders directory", theGlContext);
- }
-
+ const TCollection_AsciiString aShaderFolder = Graphic3d_ShaderProgram::ShadersFolder();
if (myIsRaytraceDataValid)
{
myRaytraceParameters.StackSize = Max (THE_DEFAULT_STACK_SIZE,
- myRaytraceGeometry.HighLevelTreeDepth() + myRaytraceGeometry.BottomLevelTreeDepth());
+ myRaytraceGeometry.TopLevelTreeDepth() + myRaytraceGeometry.BotLevelTreeDepth());
}
- TCollection_AsciiString aPrefixString = generateShaderPrefix (theGlContext);
+ const TCollection_AsciiString aPrefixString = generateShaderPrefix (theGlContext);
#ifdef RAY_TRACE_PRINT_INFO
std::cout << "GLSL prefix string:" << std::endl << aPrefixString << std::endl;
ShaderSource aBasicVertShaderSrc;
{
- TCollection_AsciiString aFiles[] = { aFolder + "/RaytraceBase.vs", "" };
- if (!aBasicVertShaderSrc.Load (aFiles))
+ if (!aShaderFolder.IsEmpty())
+ {
+ const TCollection_AsciiString aFiles[] = { aShaderFolder + "/RaytraceBase.vs", "" };
+ if (!aBasicVertShaderSrc.LoadFromFiles (aFiles))
+ {
+ return safeFailBack (aBasicVertShaderSrc.ErrorDescription(), theGlContext);
+ }
+ }
+ else
{
- return safeFailBack (aBasicVertShaderSrc.ErrorDescription(), theGlContext);
+ const TCollection_AsciiString aSrcShaders[] = { Shaders_RaytraceBase_vs, "" };
+ aBasicVertShaderSrc.LoadFromStrings (aSrcShaders);
}
}
{
- TCollection_AsciiString aFiles[] = { aFolder + "/RaytraceBase.fs",
- aFolder + "/PathtraceBase.fs",
- aFolder + "/RaytraceRender.fs",
- "" };
- if (!myRaytraceShaderSource.Load (aFiles, aPrefixString))
+ if (!aShaderFolder.IsEmpty())
+ {
+ const TCollection_AsciiString aFiles[] = { aShaderFolder + "/RaytraceBase.fs",
+ aShaderFolder + "/TangentSpaceNormal.glsl",
+ aShaderFolder + "/PathtraceBase.fs",
+ aShaderFolder + "/RaytraceRender.fs",
+ "" };
+ if (!myRaytraceShaderSource.LoadFromFiles (aFiles, aPrefixString))
+ {
+ return safeFailBack (myRaytraceShaderSource.ErrorDescription(), theGlContext);
+ }
+ }
+ else
{
- return safeFailBack (myRaytraceShaderSource.ErrorDescription(), theGlContext);
+ const TCollection_AsciiString aSrcShaders[] = { Shaders_RaytraceBase_fs,
+ Shaders_TangentSpaceNormal_glsl,
+ Shaders_PathtraceBase_fs,
+ Shaders_RaytraceRender_fs,
+ "" };
+ myRaytraceShaderSource.LoadFromStrings (aSrcShaders, aPrefixString);
}
Handle(OpenGl_ShaderObject) aBasicVertShader = initShader (GL_VERTEX_SHADER, aBasicVertShaderSrc, theGlContext);
return safeFailBack ("Failed to initialize ray-trace fragment shader", theGlContext);
}
- myRaytraceProgram = initProgram (theGlContext, aBasicVertShader, myRaytraceShader);
+ myRaytraceProgram = initProgram (theGlContext, aBasicVertShader, myRaytraceShader, "main");
if (myRaytraceProgram.IsNull())
{
return safeFailBack ("Failed to initialize ray-trace shader program", theGlContext);
}
{
- TCollection_AsciiString aFiles[] = { aFolder + "/RaytraceBase.fs",
- aFolder + "/RaytraceSmooth.fs",
- "" };
- if (!myPostFSAAShaderSource.Load (aFiles, aPrefixString))
+ if (!aShaderFolder.IsEmpty())
+ {
+ const TCollection_AsciiString aFiles[] = { aShaderFolder + "/RaytraceBase.fs", aShaderFolder + "/RaytraceSmooth.fs", "" };
+ if (!myPostFSAAShaderSource.LoadFromFiles (aFiles, aPrefixString))
+ {
+ return safeFailBack (myPostFSAAShaderSource.ErrorDescription(), theGlContext);
+ }
+ }
+ else
{
- return safeFailBack (myPostFSAAShaderSource.ErrorDescription(), theGlContext);
+ const TCollection_AsciiString aSrcShaders[] = { Shaders_RaytraceBase_fs, Shaders_RaytraceSmooth_fs, "" };
+ myPostFSAAShaderSource.LoadFromStrings (aSrcShaders, aPrefixString);
}
Handle(OpenGl_ShaderObject) aBasicVertShader = initShader (GL_VERTEX_SHADER, aBasicVertShaderSrc, theGlContext);
return safeFailBack ("Failed to initialize FSAA fragment shader", theGlContext);
}
- myPostFSAAProgram = initProgram (theGlContext, aBasicVertShader, myPostFSAAShader);
+ myPostFSAAProgram = initProgram (theGlContext, aBasicVertShader, myPostFSAAShader, "fsaa");
if (myPostFSAAProgram.IsNull())
{
return safeFailBack ("Failed to initialize FSAA shader program", theGlContext);
}
{
- ShaderSource aDispShaderSrc;
- TCollection_AsciiString aFiles[] = { aFolder + "/Display.fs", "" };
- if (!aDispShaderSrc.Load (aFiles, aPrefixString))
+ if (!aShaderFolder.IsEmpty())
+ {
+ const TCollection_AsciiString aFiles[] = { aShaderFolder + "/Display.fs", "" };
+ if (!myOutImageShaderSource.LoadFromFiles (aFiles, aPrefixString))
+ {
+ return safeFailBack (myOutImageShaderSource.ErrorDescription(), theGlContext);
+ }
+ }
+ else
{
- return safeFailBack (aDispShaderSrc.ErrorDescription(), theGlContext);
+ const TCollection_AsciiString aSrcShaders[] = { Shaders_Display_fs, "" };
+ myOutImageShaderSource.LoadFromStrings (aSrcShaders, aPrefixString);
}
Handle(OpenGl_ShaderObject) aBasicVertShader = initShader (GL_VERTEX_SHADER, aBasicVertShaderSrc, theGlContext);
return safeFailBack ("Failed to set vertex shader source", theGlContext);
}
- Handle(OpenGl_ShaderObject) aDisplayShader = initShader (GL_FRAGMENT_SHADER, aDispShaderSrc, theGlContext);
- if (aDisplayShader.IsNull())
+ myOutImageShader = initShader (GL_FRAGMENT_SHADER, myOutImageShaderSource, theGlContext);
+ if (myOutImageShader.IsNull())
{
aBasicVertShader->Release (theGlContext.operator->());
return safeFailBack ("Failed to set display fragment shader source", theGlContext);
}
- myOutImageProgram = initProgram (theGlContext, aBasicVertShader, aDisplayShader);
+ myOutImageProgram = initProgram (theGlContext, aBasicVertShader, myOutImageShader, "out");
if (myOutImageProgram.IsNull())
{
- return safeFailBack ("Failed to initialize output shader program", theGlContext);
+ return safeFailBack ("Failed to initialize display shader program", theGlContext);
}
}
}
aShaderProgram->SetSampler (theGlContext,
"uSceneTransformTexture", OpenGl_RT_SceneTransformTexture);
aShaderProgram->SetSampler (theGlContext,
- "uEnvironmentMapTexture", OpenGl_RT_EnvironmentMapTexture);
+ "uEnvMapTexture", OpenGl_RT_EnvMapTexture);
aShaderProgram->SetSampler (theGlContext,
"uRaytraceMaterialTexture", OpenGl_RT_RaytraceMaterialTexture);
aShaderProgram->SetSampler (theGlContext,
"uRaytraceLightSrcTexture", OpenGl_RT_RaytraceLightSrcTexture);
- aShaderProgram->SetSampler (theGlContext,
- "uOpenGlColorTexture", OpenGl_RT_OpenGlColorTexture);
- aShaderProgram->SetSampler (theGlContext,
- "uOpenGlDepthTexture", OpenGl_RT_OpenGlDepthTexture);
-
if (anIndex == 1)
{
aShaderProgram->SetSampler (theGlContext,
aShaderProgram->GetUniformLocation (theGlContext, "uDirectLT");
myUniformLocations[anIndex][OpenGl_RT_uDirectRT] =
aShaderProgram->GetUniformLocation (theGlContext, "uDirectRT");
- myUniformLocations[anIndex][OpenGl_RT_uViewMat] =
+ myUniformLocations[anIndex][OpenGl_RT_uViewPrMat] =
aShaderProgram->GetUniformLocation (theGlContext, "uViewMat");
myUniformLocations[anIndex][OpenGl_RT_uUnviewMat] =
aShaderProgram->GetUniformLocation (theGlContext, "uUnviewMat");
aShaderProgram->GetUniformLocation (theGlContext, "uShadowsEnabled");
myUniformLocations[anIndex][OpenGl_RT_uReflectEnabled] =
aShaderProgram->GetUniformLocation (theGlContext, "uReflectEnabled");
- myUniformLocations[anIndex][OpenGl_RT_uSphereMapEnabled] =
- aShaderProgram->GetUniformLocation (theGlContext, "uSphereMapEnabled");
- myUniformLocations[anIndex][OpenGl_RT_uSphereMapForBack] =
- aShaderProgram->GetUniformLocation (theGlContext, "uSphereMapForBack");
+ myUniformLocations[anIndex][OpenGl_RT_uEnvMapEnabled] =
+ aShaderProgram->GetUniformLocation (theGlContext, "uEnvMapEnabled");
+ myUniformLocations[anIndex][OpenGl_RT_uEnvMapForBack] =
+ aShaderProgram->GetUniformLocation (theGlContext, "uEnvMapForBack");
myUniformLocations[anIndex][OpenGl_RT_uBlockedRngEnabled] =
aShaderProgram->GetUniformLocation (theGlContext, "uBlockedRngEnabled");
- myUniformLocations[anIndex][OpenGl_RT_uSampleWeight] =
- aShaderProgram->GetUniformLocation (theGlContext, "uSampleWeight");
+ myUniformLocations[anIndex][OpenGl_RT_uWinSizeX] =
+ aShaderProgram->GetUniformLocation (theGlContext, "uWinSizeX");
+ myUniformLocations[anIndex][OpenGl_RT_uWinSizeY] =
+ aShaderProgram->GetUniformLocation (theGlContext, "uWinSizeY");
+
+ myUniformLocations[anIndex][OpenGl_RT_uAccumSamples] =
+ aShaderProgram->GetUniformLocation (theGlContext, "uAccumSamples");
myUniformLocations[anIndex][OpenGl_RT_uFrameRndSeed] =
aShaderProgram->GetUniformLocation (theGlContext, "uFrameRndSeed");
+ myUniformLocations[anIndex][OpenGl_RT_uRenderImage] =
+ aShaderProgram->GetUniformLocation (theGlContext, "uRenderImage");
+ myUniformLocations[anIndex][OpenGl_RT_uTilesImage] =
+ aShaderProgram->GetUniformLocation (theGlContext, "uTilesImage");
+ myUniformLocations[anIndex][OpenGl_RT_uOffsetImage] =
+ aShaderProgram->GetUniformLocation (theGlContext, "uOffsetImage");
+ myUniformLocations[anIndex][OpenGl_RT_uTileSize] =
+ aShaderProgram->GetUniformLocation (theGlContext, "uTileSize");
+ myUniformLocations[anIndex][OpenGl_RT_uVarianceScaleFactor] =
+ aShaderProgram->GetUniformLocation (theGlContext, "uVarianceScaleFactor");
+
myUniformLocations[anIndex][OpenGl_RT_uBackColorTop] =
aShaderProgram->GetUniformLocation (theGlContext, "uBackColorTop");
myUniformLocations[anIndex][OpenGl_RT_uBackColorBot] =
aShaderProgram->GetUniformLocation (theGlContext, "uBackColorBot");
+
+ myUniformLocations[anIndex][OpenGl_RT_uMaxRadiance] =
+ aShaderProgram->GetUniformLocation (theGlContext, "uMaxRadiance");
}
theGlContext->BindProgram (myOutImageProgram);
"uInputTexture", OpenGl_RT_PrevAccumTexture);
myOutImageProgram->SetSampler (theGlContext,
- "uDepthTexture", OpenGl_RT_DepthTexture);
+ "uDepthTexture", OpenGl_RT_RaytraceDepthTexture);
theGlContext->BindProgram (NULL);
}
// =======================================================================
// function : nullifyResource
-// purpose :
+// purpose : Releases OpenGL resource
// =======================================================================
template <class T>
-inline void nullifyResource (const Handle(OpenGl_Context)& theGlContext,
- Handle(T)& theResource)
+inline void nullifyResource (const Handle(OpenGl_Context)& theGlContext, Handle(T)& theResource)
{
if (!theResource.IsNull())
{
- theResource->Release (theGlContext.operator->());
+ theResource->Release (theGlContext.get());
theResource.Nullify();
}
}
// function : releaseRaytraceResources
// purpose : Releases OpenGL/GLSL shader programs
// =======================================================================
-void OpenGl_View::releaseRaytraceResources (const Handle(OpenGl_Context)& theGlContext)
+void OpenGl_View::releaseRaytraceResources (const Handle(OpenGl_Context)& theGlContext, const Standard_Boolean theToRebuild)
{
- myRaytraceFBO1[0]->Release (theGlContext.operator->());
- myRaytraceFBO1[1]->Release (theGlContext.operator->());
- myRaytraceFBO2[0]->Release (theGlContext.operator->());
- myRaytraceFBO2[1]->Release (theGlContext.operator->());
-
+ // release shader resources
nullifyResource (theGlContext, myRaytraceShader);
nullifyResource (theGlContext, myPostFSAAShader);
nullifyResource (theGlContext, myPostFSAAProgram);
nullifyResource (theGlContext, myOutImageProgram);
- nullifyResource (theGlContext, mySceneNodeInfoTexture);
- nullifyResource (theGlContext, mySceneMinPointTexture);
- nullifyResource (theGlContext, mySceneMaxPointTexture);
+ if (!theToRebuild) // complete release
+ {
+ myRaytraceFBO1[0]->Release (theGlContext.get());
+ myRaytraceFBO1[1]->Release (theGlContext.get());
+ myRaytraceFBO2[0]->Release (theGlContext.get());
+ myRaytraceFBO2[1]->Release (theGlContext.get());
+
+ nullifyResource (theGlContext, myRaytraceOutputTexture[0]);
+ nullifyResource (theGlContext, myRaytraceOutputTexture[1]);
- nullifyResource (theGlContext, myGeometryVertexTexture);
- nullifyResource (theGlContext, myGeometryNormalTexture);
- nullifyResource (theGlContext, myGeometryTexCrdTexture);
- nullifyResource (theGlContext, myGeometryTriangTexture);
- nullifyResource (theGlContext, mySceneTransformTexture);
+ nullifyResource (theGlContext, myRaytraceTileOffsetsTexture[0]);
+ nullifyResource (theGlContext, myRaytraceTileOffsetsTexture[1]);
+ nullifyResource (theGlContext, myRaytraceVisualErrorTexture[0]);
+ nullifyResource (theGlContext, myRaytraceVisualErrorTexture[1]);
+ nullifyResource (theGlContext, myRaytraceTileSamplesTexture[0]);
+ nullifyResource (theGlContext, myRaytraceTileSamplesTexture[1]);
- nullifyResource (theGlContext, myRaytraceLightSrcTexture);
- nullifyResource (theGlContext, myRaytraceMaterialTexture);
+ nullifyResource (theGlContext, mySceneNodeInfoTexture);
+ nullifyResource (theGlContext, mySceneMinPointTexture);
+ nullifyResource (theGlContext, mySceneMaxPointTexture);
- myRaytraceGeometry.ReleaseResources (theGlContext);
+ nullifyResource (theGlContext, myGeometryVertexTexture);
+ nullifyResource (theGlContext, myGeometryNormalTexture);
+ nullifyResource (theGlContext, myGeometryTexCrdTexture);
+ nullifyResource (theGlContext, myGeometryTriangTexture);
+ nullifyResource (theGlContext, mySceneTransformTexture);
- if (myRaytraceScreenQuad.IsValid())
- myRaytraceScreenQuad.Release (theGlContext.operator->());
+ nullifyResource (theGlContext, myRaytraceLightSrcTexture);
+ nullifyResource (theGlContext, myRaytraceMaterialTexture);
+
+ myRaytraceGeometry.ReleaseResources (theGlContext);
+
+ if (myRaytraceScreenQuad.IsValid ())
+ {
+ myRaytraceScreenQuad.Release (theGlContext.get());
+ }
+ }
}
// =======================================================================
const Standard_Integer theSizeY,
const Handle(OpenGl_Context)& theGlContext)
{
- // Auxiliary buffers are not used.
+ // Auxiliary buffers are not used
if (!myRaytraceParameters.GlobalIllumination && !myRenderParams.IsAntialiasingEnabled)
{
myRaytraceFBO1[0]->Release (theGlContext.operator->());
myRaytraceFBO2[0]->Release (theGlContext.operator->());
myRaytraceFBO1[1]->Release (theGlContext.operator->());
myRaytraceFBO2[1]->Release (theGlContext.operator->());
+
return Standard_True;
}
- myRaytraceFBO1[0]->InitLazy (theGlContext, theSizeX, theSizeY, GL_RGBA32F, myFboDepthFormat);
- myRaytraceFBO2[0]->InitLazy (theGlContext, theSizeX, theSizeY, GL_RGBA32F, myFboDepthFormat);
-
- // Init second set of buffers for stereographic rendering.
- if (myCamera->ProjectionType() == Graphic3d_Camera::Projection_Stereo)
+ if (myRaytraceParameters.AdaptiveScreenSampling)
{
- myRaytraceFBO1[1]->InitLazy (theGlContext, theSizeX, theSizeY, GL_RGBA32F, myFboDepthFormat);
- myRaytraceFBO2[1]->InitLazy (theGlContext, theSizeX, theSizeY, GL_RGBA32F, myFboDepthFormat);
+ Graphic3d_Vec2i aMaxViewport = myTileSampler.OffsetTilesViewportMax().cwiseMax (Graphic3d_Vec2i (theSizeX, theSizeY));
+ myRaytraceFBO1[0]->InitLazy (theGlContext, aMaxViewport.x(), aMaxViewport.y(), GL_RGBA32F, myFboDepthFormat);
+ myRaytraceFBO2[0]->InitLazy (theGlContext, aMaxViewport.x(), aMaxViewport.y(), GL_RGBA32F, myFboDepthFormat);
+ if (myRaytraceFBO1[1]->IsValid()) // second FBO not needed
+ {
+ myRaytraceFBO1[1]->Release (theGlContext.operator->());
+ myRaytraceFBO2[1]->Release (theGlContext.operator->());
+ }
}
- else
+
+ for (int aViewIter = 0; aViewIter < 2; ++aViewIter)
{
- myRaytraceFBO1[1]->Release (theGlContext.operator->());
- myRaytraceFBO2[1]->Release (theGlContext.operator->());
- }
+ if (myRaytraceTileOffsetsTexture[aViewIter].IsNull())
+ {
+ myRaytraceOutputTexture[aViewIter] = new OpenGl_Texture();
+ myRaytraceVisualErrorTexture[aViewIter] = new OpenGl_Texture();
+ myRaytraceTileSamplesTexture[aViewIter] = new OpenGl_Texture();
+ myRaytraceTileOffsetsTexture[aViewIter] = new OpenGl_Texture();
+ }
+ if (aViewIter == 1
+ && myCamera->ProjectionType() != Graphic3d_Camera::Projection_Stereo)
+ {
+ myRaytraceFBO1[1]->Release (theGlContext.operator->());
+ myRaytraceFBO2[1]->Release (theGlContext.operator->());
+ myRaytraceOutputTexture[1]->Release (theGlContext.operator->());
+ myRaytraceVisualErrorTexture[1]->Release (theGlContext.operator->());
+ myRaytraceTileOffsetsTexture[1]->Release (theGlContext.operator->());
+ continue;
+ }
+
+ if (myRaytraceParameters.AdaptiveScreenSampling)
+ {
+ if (myRaytraceOutputTexture[aViewIter]->SizeX() / 3 == theSizeX
+ && myRaytraceOutputTexture[aViewIter]->SizeY() / 2 == theSizeY
+ && myRaytraceVisualErrorTexture[aViewIter]->SizeX() == myTileSampler.NbTilesX()
+ && myRaytraceVisualErrorTexture[aViewIter]->SizeY() == myTileSampler.NbTilesY())
+ {
+ if (myRaytraceParameters.AdaptiveScreenSamplingAtomic)
+ {
+ continue; // offsets texture is dynamically resized
+ }
+ else if (myRaytraceTileSamplesTexture[aViewIter]->SizeX() == myTileSampler.NbTilesX()
+ && myRaytraceTileSamplesTexture[aViewIter]->SizeY() == myTileSampler.NbTilesY())
+ {
+ continue;
+ }
+ }
+
+ myAccumFrames = 0;
+
+ // Due to limitations of OpenGL image load-store extension
+ // atomic operations are supported only for single-channel
+ // images, so we define GL_R32F image. It is used as array
+ // of 6D floating point vectors:
+ // 0 - R color channel
+ // 1 - G color channel
+ // 2 - B color channel
+ // 3 - hit time transformed into OpenGL NDC space
+ // 4 - luminance accumulated for odd samples only
+ myRaytraceOutputTexture[aViewIter]->InitRectangle (theGlContext, theSizeX * 3, theSizeY * 2, OpenGl_TextureFormat::Create<GLfloat, 1>());
+
+ // workaround for some NVIDIA drivers
+ myRaytraceVisualErrorTexture[aViewIter]->Release (theGlContext.operator->());
+ myRaytraceTileSamplesTexture[aViewIter]->Release (theGlContext.operator->());
+ myRaytraceVisualErrorTexture[aViewIter]->Init (theGlContext,
+ OpenGl_TextureFormat::FindSizedFormat (theGlContext, GL_R32I),
+ Graphic3d_Vec2i (myTileSampler.NbTilesX(), myTileSampler.NbTilesY()),
+ Graphic3d_TOT_2D);
+ if (!myRaytraceParameters.AdaptiveScreenSamplingAtomic)
+ {
+ myRaytraceTileSamplesTexture[aViewIter]->Init (theGlContext,
+ OpenGl_TextureFormat::FindSizedFormat (theGlContext, GL_R32I),
+ Graphic3d_Vec2i (myTileSampler.NbTilesX(), myTileSampler.NbTilesY()),
+ Graphic3d_TOT_2D);
+ }
+ }
+ else // non-adaptive mode
+ {
+ if (myRaytraceFBO1[aViewIter]->GetSizeX() != theSizeX
+ || myRaytraceFBO1[aViewIter]->GetSizeY() != theSizeY)
+ {
+ myAccumFrames = 0; // accumulation should be restarted
+ }
+
+ myRaytraceFBO1[aViewIter]->InitLazy (theGlContext, theSizeX, theSizeY, GL_RGBA32F, myFboDepthFormat);
+ myRaytraceFBO2[aViewIter]->InitLazy (theGlContext, theSizeX, theSizeY, GL_RGBA32F, myFboDepthFormat);
+ }
+ }
return Standard_True;
}
const OpenGl_Mat4& theViewMapping,
OpenGl_Vec3* theOrigins,
OpenGl_Vec3* theDirects,
- OpenGl_Mat4& theView,
+ OpenGl_Mat4& theViewPr,
OpenGl_Mat4& theUnview)
{
// compute view-projection matrix
- theView = theViewMapping * theOrientation;
+ theViewPr = theViewMapping * theOrientation;
// compute inverse view-projection matrix
- theView.Inverted (theUnview);
+ theViewPr.Inverted (theUnview);
Standard_Integer aOriginIndex = 0;
Standard_Integer aDirectIndex = 0;
{
OpenGl_Vec4 aOrigin (GLfloat(aX),
GLfloat(aY),
- -1.0f,
+ -1.0f,
1.0f);
aOrigin = theUnview * aOrigin;
}
// =======================================================================
-// function : uploadRaytraceData
-// purpose : Uploads ray-trace data to the GPU
+// function : updatePerspCameraPT
+// purpose : Generates viewing rays (path tracing, perspective camera)
// =======================================================================
-Standard_Boolean OpenGl_View::uploadRaytraceData (const Handle(OpenGl_Context)& theGlContext)
+void OpenGl_View::updatePerspCameraPT (const OpenGl_Mat4& theOrientation,
+ const OpenGl_Mat4& theViewMapping,
+ Graphic3d_Camera::Projection theProjection,
+ OpenGl_Mat4& theViewPr,
+ OpenGl_Mat4& theUnview,
+ const int theWinSizeX,
+ const int theWinSizeY)
{
- if (!theGlContext->IsGlGreaterEqual (3, 1))
- {
-#ifdef RAY_TRACE_PRINT_INFO
- std::cout << "Error: OpenGL version is less than 3.1" << std::endl;
-#endif
- return Standard_False;
+ // compute view-projection matrix
+ theViewPr = theViewMapping * theOrientation;
+
+ // compute inverse view-projection matrix
+ theViewPr.Inverted(theUnview);
+
+ // get camera stereo params
+ float anIOD = myCamera->GetIODType() == Graphic3d_Camera::IODType_Relative
+ ? static_cast<float> (myCamera->IOD() * myCamera->Distance())
+ : static_cast<float> (myCamera->IOD());
+
+ float aZFocus = myCamera->ZFocusType() == Graphic3d_Camera::FocusType_Relative
+ ? static_cast<float> (myCamera->ZFocus() * myCamera->Distance())
+ : static_cast<float> (myCamera->ZFocus());
+
+ // get camera view vectors
+ const gp_Pnt anOrig = myCamera->Eye();
+
+ myEyeOrig = OpenGl_Vec3 (static_cast<float> (anOrig.X()),
+ static_cast<float> (anOrig.Y()),
+ static_cast<float> (anOrig.Z()));
+
+ const gp_Dir aView = myCamera->Direction();
+
+ OpenGl_Vec3 anEyeViewMono = OpenGl_Vec3 (static_cast<float> (aView.X()),
+ static_cast<float> (aView.Y()),
+ static_cast<float> (aView.Z()));
+
+ const gp_Dir anUp = myCamera->Up();
+
+ myEyeVert = OpenGl_Vec3 (static_cast<float> (anUp.X()),
+ static_cast<float> (anUp.Y()),
+ static_cast<float> (anUp.Z()));
+
+ myEyeSide = OpenGl_Vec3::Cross (anEyeViewMono, myEyeVert);
+
+ const double aScaleY = tan (myCamera->FOVy() / 360 * M_PI);
+ const double aScaleX = theWinSizeX * aScaleY / theWinSizeY;
+
+ myEyeSize = OpenGl_Vec2 (static_cast<float> (aScaleX),
+ static_cast<float> (aScaleY));
+
+ if (theProjection == Graphic3d_Camera::Projection_Perspective)
+ {
+ myEyeView = anEyeViewMono;
+ }
+ else // stereo camera
+ {
+ // compute z-focus point
+ OpenGl_Vec3 aZFocusPoint = myEyeOrig + anEyeViewMono * aZFocus;
+
+ // compute stereo camera shift
+ float aDx = theProjection == Graphic3d_Camera::Projection_MonoRightEye ? 0.5f * anIOD : -0.5f * anIOD;
+ myEyeOrig += myEyeSide.Normalized() * aDx;
+
+ // estimate new camera direction vector and correct its length
+ myEyeView = (aZFocusPoint - myEyeOrig).Normalized();
+ myEyeView *= 1.f / anEyeViewMono.Dot (myEyeView);
+ }
+}
+
+// =======================================================================
+// function : uploadRaytraceData
+// purpose : Uploads ray-trace data to the GPU
+// =======================================================================
+Standard_Boolean OpenGl_View::uploadRaytraceData (const Handle(OpenGl_Context)& theGlContext)
+{
+ if (!theGlContext->IsGlGreaterEqual (3, 1))
+ {
+#ifdef RAY_TRACE_PRINT_INFO
+ std::cout << "Error: OpenGL version is less than 3.1" << std::endl;
+#endif
+ return Standard_False;
}
myAccumFrames = 0; // accumulation should be restarted
/////////////////////////////////////////////////////////////////////////////
// Create OpenGL BVH buffers
- if (mySceneNodeInfoTexture.IsNull()) // create scene BVH buffers
+ if (mySceneNodeInfoTexture.IsNull()) // create scene BVH buffers
{
mySceneNodeInfoTexture = new OpenGl_TextureBufferArb;
mySceneMinPointTexture = new OpenGl_TextureBufferArb;
}
}
- if (myGeometryVertexTexture.IsNull()) // create geometry buffers
+ if (myGeometryVertexTexture.IsNull()) // create geometry buffers
{
myGeometryVertexTexture = new OpenGl_TextureBufferArb;
myGeometryNormalTexture = new OpenGl_TextureBufferArb;
OpenGl_TriangleSet* aTriangleSet = dynamic_cast<OpenGl_TriangleSet*> (
myRaytraceGeometry.Objects().ChangeValue (anElemIndex).operator->());
- const BVH_Transform<Standard_ShortReal, 4>* aTransform =
- dynamic_cast<const BVH_Transform<Standard_ShortReal, 4>* > (aTriangleSet->Properties().operator->());
-
+ const BVH_Transform<Standard_ShortReal, 4>* aTransform = dynamic_cast<const BVH_Transform<Standard_ShortReal, 4>* > (aTriangleSet->Properties().get());
Standard_ASSERT_RETURN (aTransform != NULL,
"OpenGl_TriangleSet does not contain transform", Standard_False);
aTotalVerticesNb += aTriangleSet->Vertices.size();
aTotalElementsNb += aTriangleSet->Elements.size();
- Standard_ASSERT_RETURN (!aTriangleSet->BVH().IsNull(),
+ Standard_ASSERT_RETURN (!aTriangleSet->QuadBVH().IsNull(),
"Error: Failed to get bottom-level BVH of OpenGL element", Standard_False);
- aTotalBVHNodesNb += aTriangleSet->BVH()->NodeInfoBuffer().size();
+ aTotalBVHNodesNb += aTriangleSet->QuadBVH()->NodeInfoBuffer().size();
}
- aTotalBVHNodesNb += myRaytraceGeometry.BVH()->NodeInfoBuffer().size();
+ aTotalBVHNodesNb += myRaytraceGeometry.QuadBVH()->NodeInfoBuffer().size();
if (aTotalBVHNodesNb != 0)
{
return Standard_False;
}
- const NCollection_Handle<BVH_Tree<Standard_ShortReal, 3> >& aBVH = myRaytraceGeometry.BVH();
+ const QuadBvhHandle& aBVH = myRaytraceGeometry.QuadBVH();
if (aBVH->Length() > 0)
{
Standard_ASSERT_RETURN (aBVHOffset != OpenGl_RaytraceGeometry::INVALID_OFFSET,
"Error: Failed to get offset for bottom-level BVH", Standard_False);
- const Standard_Integer aBvhBuffersSize = aTriangleSet->BVH()->Length();
+ const Standard_Integer aBvhBuffersSize = aTriangleSet->QuadBVH()->Length();
if (aBvhBuffersSize != 0)
{
aResult &= mySceneNodeInfoTexture->SubData (theGlContext, aBVHOffset, aBvhBuffersSize,
- reinterpret_cast<const GLuint*> (&aTriangleSet->BVH()->NodeInfoBuffer().front()));
+ reinterpret_cast<const GLuint*> (&aTriangleSet->QuadBVH()->NodeInfoBuffer().front()));
aResult &= mySceneMinPointTexture->SubData (theGlContext, aBVHOffset, aBvhBuffersSize,
- reinterpret_cast<const GLfloat*> (&aTriangleSet->BVH()->MinPointBuffer().front()));
+ reinterpret_cast<const GLfloat*> (&aTriangleSet->QuadBVH()->MinPointBuffer().front()));
aResult &= mySceneMaxPointTexture->SubData (theGlContext, aBVHOffset, aBvhBuffersSize,
- reinterpret_cast<const GLfloat*> (&aTriangleSet->BVH()->MaxPointBuffer().front()));
+ reinterpret_cast<const GLfloat*> (&aTriangleSet->QuadBVH()->MaxPointBuffer().front()));
if (!aResult)
{
if (myRaytraceGeometry.Materials.size() != 0)
{
aResult &= myRaytraceMaterialTexture->Init (theGlContext, 4,
- GLsizei (myRaytraceGeometry.Materials.size() * 18), myRaytraceGeometry.Materials.front().Packed());
+ GLsizei (myRaytraceGeometry.Materials.size() * 19), myRaytraceGeometry.Materials.front().Packed());
if (!aResult)
{
#ifdef RAY_TRACE_PRINT_INFO
- Standard_ShortReal aMemUsed = 0.f;
+ Standard_ShortReal aMemTrgUsed = 0.f;
+ Standard_ShortReal aMemBvhUsed = 0.f;
for (Standard_Integer anElemIdx = 0; anElemIdx < myRaytraceGeometry.Size(); ++anElemIdx)
{
- OpenGl_TriangleSet* aTriangleSet = dynamic_cast<OpenGl_TriangleSet*> (
- myRaytraceGeometry.Objects().ChangeValue (anElemIdx).operator->());
+ OpenGl_TriangleSet* aTriangleSet = dynamic_cast<OpenGl_TriangleSet*> (myRaytraceGeometry.Objects()(anElemIdx).get());
- aMemUsed += static_cast<Standard_ShortReal> (
+ aMemTrgUsed += static_cast<Standard_ShortReal> (
aTriangleSet->Vertices.size() * sizeof (BVH_Vec3f));
- aMemUsed += static_cast<Standard_ShortReal> (
+ aMemTrgUsed += static_cast<Standard_ShortReal> (
aTriangleSet->Normals.size() * sizeof (BVH_Vec3f));
- aMemUsed += static_cast<Standard_ShortReal> (
+ aMemTrgUsed += static_cast<Standard_ShortReal> (
aTriangleSet->TexCrds.size() * sizeof (BVH_Vec2f));
- aMemUsed += static_cast<Standard_ShortReal> (
+ aMemTrgUsed += static_cast<Standard_ShortReal> (
aTriangleSet->Elements.size() * sizeof (BVH_Vec4i));
- aMemUsed += static_cast<Standard_ShortReal> (
- aTriangleSet->BVH()->NodeInfoBuffer().size() * sizeof (BVH_Vec4i));
- aMemUsed += static_cast<Standard_ShortReal> (
- aTriangleSet->BVH()->MinPointBuffer().size() * sizeof (BVH_Vec3f));
- aMemUsed += static_cast<Standard_ShortReal> (
- aTriangleSet->BVH()->MaxPointBuffer().size() * sizeof (BVH_Vec3f));
+ aMemBvhUsed += static_cast<Standard_ShortReal> (
+ aTriangleSet->QuadBVH()->NodeInfoBuffer().size() * sizeof (BVH_Vec4i));
+ aMemBvhUsed += static_cast<Standard_ShortReal> (
+ aTriangleSet->QuadBVH()->MinPointBuffer().size() * sizeof (BVH_Vec3f));
+ aMemBvhUsed += static_cast<Standard_ShortReal> (
+ aTriangleSet->QuadBVH()->MaxPointBuffer().size() * sizeof (BVH_Vec3f));
}
- aMemUsed += static_cast<Standard_ShortReal> (
- myRaytraceGeometry.BVH()->NodeInfoBuffer().size() * sizeof (BVH_Vec4i));
- aMemUsed += static_cast<Standard_ShortReal> (
- myRaytraceGeometry.BVH()->MinPointBuffer().size() * sizeof (BVH_Vec3f));
- aMemUsed += static_cast<Standard_ShortReal> (
- myRaytraceGeometry.BVH()->MaxPointBuffer().size() * sizeof (BVH_Vec3f));
+ aMemBvhUsed += static_cast<Standard_ShortReal> (
+ myRaytraceGeometry.QuadBVH()->NodeInfoBuffer().size() * sizeof (BVH_Vec4i));
+ aMemBvhUsed += static_cast<Standard_ShortReal> (
+ myRaytraceGeometry.QuadBVH()->MinPointBuffer().size() * sizeof (BVH_Vec3f));
+ aMemBvhUsed += static_cast<Standard_ShortReal> (
+ myRaytraceGeometry.QuadBVH()->MaxPointBuffer().size() * sizeof (BVH_Vec3f));
- std::cout << "GPU Memory Used (MB): ~" << aMemUsed / 1048576 << std::endl;
+ std::cout << "GPU Memory Used (Mb):\n"
+ << "\tFor mesh: " << aMemTrgUsed / 1048576 << "\n"
+ << "\tFor BVHs: " << aMemBvhUsed / 1048576 << "\n";
#endif
// =======================================================================
Standard_Boolean OpenGl_View::updateRaytraceLightSources (const OpenGl_Mat4& theInvModelView, const Handle(OpenGl_Context)& theGlContext)
{
- myRaytraceGeometry.Sources.clear();
-
- myRaytraceGeometry.Ambient = BVH_Vec4f (0.0f, 0.0f, 0.0f, 0.0f);
-
- OpenGl_ListOfLight::Iterator aLightIter (myShadingModel == Graphic3d_TOSM_NONE ? myNoShadingLight : myLights);
- for (; aLightIter.More(); aLightIter.Next())
+ std::vector<Handle(Graphic3d_CLight)> aLightSources;
+ Graphic3d_Vec4 aNewAmbient (0.0f);
+ if (myShadingModel != Graphic3d_TOSM_UNLIT
+ && !myLights.IsNull())
{
- const OpenGl_Light& aLight = aLightIter.Value();
+ aNewAmbient.SetValues (myLights->AmbientColor().rgb(), 0.0f);
- if (aLight.Type == Graphic3d_TOLS_AMBIENT)
+ // move positional light sources at the front of the list
+ aLightSources.reserve (myLights->Extent());
+ for (Graphic3d_LightSet::Iterator aLightIter (myLights, Graphic3d_LightSet::IterationFilter_ExcludeDisabledAndAmbient);
+ aLightIter.More(); aLightIter.Next())
{
- myRaytraceGeometry.Ambient += BVH_Vec4f (aLight.Color.r() * aLight.Intensity,
- aLight.Color.g() * aLight.Intensity,
- aLight.Color.b() * aLight.Intensity,
- 0.0f);
- continue;
+ const Graphic3d_CLight& aLight = *aLightIter.Value();
+ if (aLight.Type() != Graphic3d_TOLS_DIRECTIONAL)
+ {
+ aLightSources.push_back (aLightIter.Value());
+ }
+ }
+
+ for (Graphic3d_LightSet::Iterator aLightIter (myLights, Graphic3d_LightSet::IterationFilter_ExcludeDisabledAndAmbient);
+ aLightIter.More(); aLightIter.Next())
+ {
+ if (aLightIter.Value()->Type() == Graphic3d_TOLS_DIRECTIONAL)
+ {
+ aLightSources.push_back (aLightIter.Value());
+ }
}
+ }
- BVH_Vec4f aDiffuse (aLight.Color.r() * aLight.Intensity,
- aLight.Color.g() * aLight.Intensity,
- aLight.Color.b() * aLight.Intensity,
- 1.0f);
+ if (!myRaytraceGeometry.Ambient.IsEqual (aNewAmbient))
+ {
+ myAccumFrames = 0;
+ myRaytraceGeometry.Ambient = aNewAmbient;
+ }
- BVH_Vec4f aPosition (-aLight.Direction.x(),
- -aLight.Direction.y(),
- -aLight.Direction.z(),
+ // get number of 'real' (not ambient) light sources
+ const size_t aNbLights = aLightSources.size();
+ Standard_Boolean wasUpdated = myRaytraceGeometry.Sources.size () != aNbLights;
+ if (wasUpdated)
+ {
+ myRaytraceGeometry.Sources.resize (aNbLights);
+ }
+
+ for (size_t aLightIdx = 0, aRealIdx = 0; aLightIdx < aLightSources.size(); ++aLightIdx)
+ {
+ const Graphic3d_CLight& aLight = *aLightSources[aLightIdx];
+ const Graphic3d_Vec4& aLightColor = aLight.PackedColor();
+ BVH_Vec4f aEmission (aLightColor.r() * aLight.Intensity(),
+ aLightColor.g() * aLight.Intensity(),
+ aLightColor.b() * aLight.Intensity(),
+ 1.0f);
+
+ BVH_Vec4f aPosition (-aLight.PackedDirectionRange().x(),
+ -aLight.PackedDirectionRange().y(),
+ -aLight.PackedDirectionRange().z(),
0.0f);
- if (aLight.Type != Graphic3d_TOLS_DIRECTIONAL)
+ if (aLight.Type() != Graphic3d_TOLS_DIRECTIONAL)
{
- aPosition = BVH_Vec4f (aLight.Position.x(),
- aLight.Position.y(),
- aLight.Position.z(),
+ aPosition = BVH_Vec4f (static_cast<float>(aLight.Position().X()),
+ static_cast<float>(aLight.Position().Y()),
+ static_cast<float>(aLight.Position().Z()),
1.0f);
- // store smoothing radius in w-component
- aDiffuse.w() = Max (aLight.Smoothness, 0.f);
+ // store smoothing radius in W-component
+ aEmission.w() = Max (aLight.Smoothness(), 0.f);
}
else
{
- // store cosine of smoothing angle in w-component
- aDiffuse.w() = cosf (Min (Max (aLight.Smoothness, 0.f), static_cast<Standard_ShortReal> (M_PI / 2.0)));
+ // store cosine of smoothing angle in W-component
+ aEmission.w() = cosf (Min (Max (aLight.Smoothness(), 0.f), static_cast<Standard_ShortReal> (M_PI / 2.0)));
}
- if (aLight.IsHeadlight)
+ if (aLight.IsHeadlight())
{
aPosition = theInvModelView * aPosition;
}
- myRaytraceGeometry.Sources.push_back (OpenGl_RaytraceLight (aDiffuse, aPosition));
+ for (int aK = 0; aK < 4; ++aK)
+ {
+ wasUpdated |= (aEmission[aK] != myRaytraceGeometry.Sources[aRealIdx].Emission[aK])
+ || (aPosition[aK] != myRaytraceGeometry.Sources[aRealIdx].Position[aK]);
+ }
+
+ if (wasUpdated)
+ {
+ myRaytraceGeometry.Sources[aRealIdx] = OpenGl_RaytraceLight (aEmission, aPosition);
+ }
+
+ ++aRealIdx;
}
- if (myRaytraceLightSrcTexture.IsNull()) // create light source buffer
+ if (myRaytraceLightSrcTexture.IsNull()) // create light source buffer
{
myRaytraceLightSrcTexture = new OpenGl_TextureBufferArb;
-
- if (!myRaytraceLightSrcTexture->Create (theGlContext))
- {
-#ifdef RAY_TRACE_PRINT_INFO
- std::cout << "Error: Failed to create light source buffer" << std::endl;
-#endif
- return Standard_False;
- }
}
- if (myRaytraceGeometry.Sources.size() != 0)
+ if (myRaytraceGeometry.Sources.size() != 0 && wasUpdated)
{
const GLfloat* aDataPtr = myRaytraceGeometry.Sources.front().Packed();
if (!myRaytraceLightSrcTexture->Init (theGlContext, 4, GLsizei (myRaytraceGeometry.Sources.size() * 2), aDataPtr))
#endif
return Standard_False;
}
+
+ myAccumFrames = 0; // accumulation should be restarted
}
return Standard_True;
}
// =======================================================================
-// function : updateRaytraceEnvironmentMap
-// purpose : Updates environment map for ray-tracing
+// function : setUniformState
+// purpose : Sets uniform state for the given ray-tracing shader program
// =======================================================================
-Standard_Boolean OpenGl_View::updateRaytraceEnvironmentMap (const Handle(OpenGl_Context)& theGlContext)
+Standard_Boolean OpenGl_View::setUniformState (const Standard_Integer theProgramId,
+ const Standard_Integer theWinSizeX,
+ const Standard_Integer theWinSizeY,
+ Graphic3d_Camera::Projection theProjection,
+ const Handle(OpenGl_Context)& theGlContext)
{
- Standard_Boolean aResult = Standard_True;
+ // Get projection state
+ OpenGl_MatrixState<Standard_ShortReal>& aCntxProjectionState = theGlContext->ProjectionState;
- if (!myToUpdateEnvironmentMap)
- {
- return aResult;
- }
+ OpenGl_Mat4 aViewPrjMat;
+ OpenGl_Mat4 anUnviewMat;
+ OpenGl_Vec3 aOrigins[4];
+ OpenGl_Vec3 aDirects[4];
- for (Standard_Integer anIdx = 0; anIdx < 2; ++anIdx)
+ if (myCamera->IsOrthographic()
+ || !myRenderParams.IsGlobalIlluminationEnabled)
{
- const Handle(OpenGl_ShaderProgram)& aProgram =
- anIdx == 0 ? myRaytraceProgram : myPostFSAAProgram;
+ updateCamera (myCamera->OrientationMatrixF(),
+ aCntxProjectionState.Current(),
+ aOrigins,
+ aDirects,
+ aViewPrjMat,
+ anUnviewMat);
- if (!aProgram.IsNull())
+ if (myRenderParams.UseEnvironmentMapBackground
+ || myRaytraceParameters.CubemapForBack)
{
- aResult &= theGlContext->BindProgram (aProgram);
-
- if (!myTextureEnv.IsNull())
- {
- myTextureEnv->Bind (theGlContext,
- GL_TEXTURE0 + OpenGl_RT_EnvironmentMapTexture);
-
- aResult &= aProgram->SetUniform (theGlContext,
- myUniformLocations[anIdx][OpenGl_RT_uSphereMapEnabled], 1);
- }
- else
- {
- aResult &= aProgram->SetUniform (theGlContext,
- myUniformLocations[anIdx][OpenGl_RT_uSphereMapEnabled], 0);
- }
+ OpenGl_Mat4 aTempMat;
+ OpenGl_Mat4 aTempInvMat;
+ updatePerspCameraPT (myCamera->OrientationMatrixF(),
+ aCntxProjectionState.Current(),
+ theProjection,
+ aTempMat,
+ aTempInvMat,
+ theWinSizeX,
+ theWinSizeY);
}
}
+ else
+ {
+ updatePerspCameraPT (myCamera->OrientationMatrixF(),
+ aCntxProjectionState.Current(),
+ theProjection,
+ aViewPrjMat,
+ anUnviewMat,
+ theWinSizeX,
+ theWinSizeY);
+ }
- myToUpdateEnvironmentMap = Standard_False;
-
- theGlContext->BindProgram (NULL);
-
- return aResult;
-}
-
-// =======================================================================
-// function : setUniformState
-// purpose : Sets uniform state for the given ray-tracing shader program
-// =======================================================================
-Standard_Boolean OpenGl_View::setUniformState (const OpenGl_Vec3* theOrigins,
- const OpenGl_Vec3* theDirects,
- const OpenGl_Mat4& theViewMat,
- const OpenGl_Mat4& theUnviewMat,
- const Standard_Integer theProgramId,
- const Handle(OpenGl_Context)& theGlContext)
-{
- Handle(OpenGl_ShaderProgram)& theProgram =
- theProgramId == 0 ? myRaytraceProgram : myPostFSAAProgram;
+ Handle(OpenGl_ShaderProgram)& theProgram = theProgramId == 0
+ ? myRaytraceProgram
+ : myPostFSAAProgram;
if (theProgram.IsNull())
{
return Standard_False;
}
+
+ theProgram->SetUniform(theGlContext, "uEyeOrig", myEyeOrig);
+ theProgram->SetUniform(theGlContext, "uEyeView", myEyeView);
+ theProgram->SetUniform(theGlContext, "uEyeVert", myEyeVert);
+ theProgram->SetUniform(theGlContext, "uEyeSide", myEyeSide);
+ theProgram->SetUniform(theGlContext, "uEyeSize", myEyeSize);
- const Standard_Integer aLightSourceBufferSize =
- static_cast<Standard_Integer> (myRaytraceGeometry.Sources.size());
+ theProgram->SetUniform(theGlContext, "uApertureRadius", myRenderParams.CameraApertureRadius);
+ theProgram->SetUniform(theGlContext, "uFocalPlaneDist", myRenderParams.CameraFocalPlaneDist);
// Set camera state
theProgram->SetUniform (theGlContext,
- myUniformLocations[theProgramId][OpenGl_RT_uOriginLB], theOrigins[0]);
+ myUniformLocations[theProgramId][OpenGl_RT_uOriginLB], aOrigins[0]);
theProgram->SetUniform (theGlContext,
- myUniformLocations[theProgramId][OpenGl_RT_uOriginRB], theOrigins[1]);
+ myUniformLocations[theProgramId][OpenGl_RT_uOriginRB], aOrigins[1]);
theProgram->SetUniform (theGlContext,
- myUniformLocations[theProgramId][OpenGl_RT_uOriginLT], theOrigins[2]);
+ myUniformLocations[theProgramId][OpenGl_RT_uOriginLT], aOrigins[2]);
theProgram->SetUniform (theGlContext,
- myUniformLocations[theProgramId][OpenGl_RT_uOriginRT], theOrigins[3]);
+ myUniformLocations[theProgramId][OpenGl_RT_uOriginRT], aOrigins[3]);
theProgram->SetUniform (theGlContext,
- myUniformLocations[theProgramId][OpenGl_RT_uDirectLB], theDirects[0]);
+ myUniformLocations[theProgramId][OpenGl_RT_uDirectLB], aDirects[0]);
theProgram->SetUniform (theGlContext,
- myUniformLocations[theProgramId][OpenGl_RT_uDirectRB], theDirects[1]);
+ myUniformLocations[theProgramId][OpenGl_RT_uDirectRB], aDirects[1]);
theProgram->SetUniform (theGlContext,
- myUniformLocations[theProgramId][OpenGl_RT_uDirectLT], theDirects[2]);
+ myUniformLocations[theProgramId][OpenGl_RT_uDirectLT], aDirects[2]);
theProgram->SetUniform (theGlContext,
- myUniformLocations[theProgramId][OpenGl_RT_uDirectRT], theDirects[3]);
+ myUniformLocations[theProgramId][OpenGl_RT_uDirectRT], aDirects[3]);
theProgram->SetUniform (theGlContext,
- myUniformLocations[theProgramId][OpenGl_RT_uViewMat], theViewMat);
+ myUniformLocations[theProgramId][OpenGl_RT_uViewPrMat], aViewPrjMat);
theProgram->SetUniform (theGlContext,
- myUniformLocations[theProgramId][OpenGl_RT_uUnviewMat], theUnviewMat);
+ myUniformLocations[theProgramId][OpenGl_RT_uUnviewMat], anUnviewMat);
- // Set scene parameters
+ // Set screen dimensions
+ myRaytraceProgram->SetUniform (theGlContext,
+ myUniformLocations[theProgramId][OpenGl_RT_uWinSizeX], theWinSizeX);
+ myRaytraceProgram->SetUniform (theGlContext,
+ myUniformLocations[theProgramId][OpenGl_RT_uWinSizeY], theWinSizeY);
+
+ // Set 3D scene parameters
theProgram->SetUniform (theGlContext,
myUniformLocations[theProgramId][OpenGl_RT_uSceneRad], myRaytraceSceneRadius);
theProgram->SetUniform (theGlContext,
myUniformLocations[theProgramId][OpenGl_RT_uSceneEps], myRaytraceSceneEpsilon);
- theProgram->SetUniform (theGlContext,
- myUniformLocations[theProgramId][OpenGl_RT_uLightCount], aLightSourceBufferSize);
- theProgram->SetUniform (theGlContext,
- myUniformLocations[theProgramId][OpenGl_RT_uLightAmbnt], myRaytraceGeometry.Ambient);
- // Set run-time rendering options
- theProgram->SetUniform (theGlContext,
- myUniformLocations[theProgramId][OpenGl_RT_uShadowsEnabled], myRenderParams.IsShadowEnabled ? 1 : 0);
+ // Set light source parameters
+ const Standard_Integer aLightSourceBufferSize =
+ static_cast<Standard_Integer> (myRaytraceGeometry.Sources.size());
+
theProgram->SetUniform (theGlContext,
- myUniformLocations[theProgramId][OpenGl_RT_uReflectEnabled], myRenderParams.IsReflectionEnabled ? 1 : 0);
-
- if (myRenderParams.IsGlobalIlluminationEnabled)
- {
- theProgram->SetUniform (theGlContext,
- myUniformLocations[theProgramId][OpenGl_RT_uBlockedRngEnabled], myRenderParams.CoherentPathTracingMode ? 1 : 0);
- }
+ myUniformLocations[theProgramId][OpenGl_RT_uLightCount], aLightSourceBufferSize);
// Set array of 64-bit texture handles
if (theGlContext->arbTexBindless != NULL && myRaytraceGeometry.HasTextures())
const std::vector<GLuint64>& aTextures = myRaytraceGeometry.TextureHandles();
theProgram->SetUniform (theGlContext, myUniformLocations[theProgramId][OpenGl_RT_uTexSamplersArray],
- static_cast<GLsizei> (aTextures.size()), (OpenGl_Vec2u* )&aTextures.front());
+ static_cast<GLsizei> (aTextures.size()), reinterpret_cast<const OpenGl_Vec2u*> (&aTextures.front()));
+ }
+
+ // Set background colors (only vertical gradient background supported)
+ OpenGl_Vec4 aBackColorTop = myBgColor, aBackColorBot = myBgColor;
+ if (myBackgrounds[Graphic3d_TOB_GRADIENT] != NULL
+ && myBackgrounds[Graphic3d_TOB_GRADIENT]->IsDefined())
+ {
+ aBackColorTop = myBackgrounds[Graphic3d_TOB_GRADIENT]->GradientColor (0);
+ aBackColorBot = myBackgrounds[Graphic3d_TOB_GRADIENT]->GradientColor (1);
+
+ if (myCamera->Tile().IsValid())
+ {
+ Standard_Integer aTileOffset = myCamera->Tile().OffsetLowerLeft().y();
+ Standard_Integer aTileSize = myCamera->Tile().TileSize.y();
+ Standard_Integer aViewSize = myCamera->Tile().TotalSize.y();
+ OpenGl_Vec4 aColorRange = aBackColorTop - aBackColorBot;
+ aBackColorBot = aBackColorBot + aColorRange * ((float) aTileOffset / aViewSize);
+ aBackColorTop = aBackColorBot + aColorRange * ((float) aTileSize / aViewSize);
+ }
+ }
+ aBackColorTop = theGlContext->Vec4FromQuantityColor (aBackColorTop);
+ aBackColorBot = theGlContext->Vec4FromQuantityColor (aBackColorBot);
+ theProgram->SetUniform (theGlContext, myUniformLocations[theProgramId][OpenGl_RT_uBackColorTop], aBackColorTop);
+ theProgram->SetUniform (theGlContext, myUniformLocations[theProgramId][OpenGl_RT_uBackColorBot], aBackColorBot);
+
+ // Set environment map parameters
+ const Handle(OpenGl_TextureSet)& anEnvTextureSet = myRaytraceParameters.CubemapForBack
+ ? myCubeMapParams->TextureSet (theGlContext)
+ : myTextureEnv;
+ const bool toDisableEnvironmentMap = anEnvTextureSet.IsNull()
+ || anEnvTextureSet->IsEmpty()
+ || !anEnvTextureSet->First()->IsValid();
+ theProgram->SetUniform (theGlContext, myUniformLocations[theProgramId][OpenGl_RT_uEnvMapEnabled],
+ toDisableEnvironmentMap ? 0 : 1);
+ if (myRaytraceParameters.CubemapForBack)
+ {
+ theProgram->SetUniform (theGlContext, "uZCoeff", myBackgroundCubeMap->ZIsInverted() ? -1 : 1);
+ theProgram->SetUniform (theGlContext, "uYCoeff", myBackgroundCubeMap->IsTopDown() ? 1 : -1);
+ theProgram->SetUniform (theGlContext, myUniformLocations[theProgramId][OpenGl_RT_uEnvMapForBack],
+ myBackgroundType == Graphic3d_TOB_CUBEMAP ? 1 : 0);
+ }
+ else
+ {
+ theProgram->SetUniform (theGlContext, myUniformLocations[theProgramId][OpenGl_RT_uEnvMapForBack],
+ myRenderParams.UseEnvironmentMapBackground ? 1 : 0);
}
- // Set background colors (only gradient background supported)
- if (myBgGradientArray != NULL
- && myBgGradientArray->IsDefined())
+ // Set ambient light source
+ theProgram->SetUniform (theGlContext,
+ myUniformLocations[theProgramId][OpenGl_RT_uLightAmbnt], myRaytraceGeometry.Ambient);
+ if (myRenderParams.IsGlobalIlluminationEnabled) // GI parameters
{
theProgram->SetUniform (theGlContext,
- myUniformLocations[theProgramId][OpenGl_RT_uBackColorTop], myBgGradientArray->GradientColor (0));
+ myUniformLocations[theProgramId][OpenGl_RT_uMaxRadiance], myRenderParams.RadianceClampingValue);
+
theProgram->SetUniform (theGlContext,
- myUniformLocations[theProgramId][OpenGl_RT_uBackColorBot], myBgGradientArray->GradientColor (1));
+ myUniformLocations[theProgramId][OpenGl_RT_uBlockedRngEnabled], myRenderParams.CoherentPathTracingMode ? 1 : 0);
+
+ // Check whether we should restart accumulation for run-time parameters
+ if (myRenderParams.RadianceClampingValue != myRaytraceParameters.RadianceClampingValue
+ || myRenderParams.UseEnvironmentMapBackground != myRaytraceParameters.UseEnvMapForBackground)
+ {
+ myAccumFrames = 0; // accumulation should be restarted
+
+ myRaytraceParameters.RadianceClampingValue = myRenderParams.RadianceClampingValue;
+ myRaytraceParameters.UseEnvMapForBackground = myRenderParams.UseEnvironmentMapBackground;
+ }
}
- else
+ else // RT parameters
{
- const OpenGl_Vec4 aBackColor (myBgColor.rgb[0],
- myBgColor.rgb[1],
- myBgColor.rgb[2],
- 1.0f);
+ // Enable/disable run-time ray-tracing effects
theProgram->SetUniform (theGlContext,
- myUniformLocations[theProgramId][OpenGl_RT_uBackColorTop], aBackColor);
+ myUniformLocations[theProgramId][OpenGl_RT_uShadowsEnabled], myRenderParams.IsShadowEnabled ? 1 : 0);
theProgram->SetUniform (theGlContext,
- myUniformLocations[theProgramId][OpenGl_RT_uBackColorBot], aBackColor);
+ myUniformLocations[theProgramId][OpenGl_RT_uReflectEnabled], myRenderParams.IsReflectionEnabled ? 1 : 0);
}
- theProgram->SetUniform (theGlContext,
- myUniformLocations[theProgramId][OpenGl_RT_uSphereMapForBack], myRenderParams.UseEnvironmentMapBackground ? 1 : 0);
-
return Standard_True;
}
// function : bindRaytraceTextures
// purpose : Binds ray-trace textures to corresponding texture units
// =======================================================================
-void OpenGl_View::bindRaytraceTextures (const Handle(OpenGl_Context)& theGlContext)
+void OpenGl_View::bindRaytraceTextures (const Handle(OpenGl_Context)& theGlContext,
+ int theStereoView)
{
- mySceneMinPointTexture->BindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_SceneMinPointTexture);
- mySceneMaxPointTexture->BindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_SceneMaxPointTexture);
- mySceneNodeInfoTexture->BindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_SceneNodeInfoTexture);
- myGeometryVertexTexture->BindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_GeometryVertexTexture);
- myGeometryNormalTexture->BindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_GeometryNormalTexture);
- myGeometryTexCrdTexture->BindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_GeometryTexCrdTexture);
- myGeometryTriangTexture->BindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_GeometryTriangTexture);
- mySceneTransformTexture->BindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_SceneTransformTexture);
- myRaytraceMaterialTexture->BindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_RaytraceMaterialTexture);
- myRaytraceLightSrcTexture->BindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_RaytraceLightSrcTexture);
-
- if (!myOpenGlFBO.IsNull())
- {
- myOpenGlFBO->ColorTexture()->Bind (theGlContext, GL_TEXTURE0 + OpenGl_RT_OpenGlColorTexture);
- myOpenGlFBO->DepthStencilTexture()->Bind (theGlContext, GL_TEXTURE0 + OpenGl_RT_OpenGlDepthTexture);
+ if (myRaytraceParameters.AdaptiveScreenSampling
+ && myRaytraceParameters.GlobalIllumination)
+ {
+ #if !defined(GL_ES_VERSION_2_0)
+ theGlContext->core42->glBindImageTexture (OpenGl_RT_OutputImage,
+ myRaytraceOutputTexture[theStereoView]->TextureId(), 0, GL_TRUE, 0, GL_READ_WRITE, GL_R32F);
+ theGlContext->core42->glBindImageTexture (OpenGl_RT_VisualErrorImage,
+ myRaytraceVisualErrorTexture[theStereoView]->TextureId(), 0, GL_TRUE, 0, GL_READ_WRITE, GL_R32I);
+ if (myRaytraceParameters.AdaptiveScreenSamplingAtomic)
+ {
+ theGlContext->core42->glBindImageTexture (OpenGl_RT_TileOffsetsImage,
+ myRaytraceTileOffsetsTexture[theStereoView]->TextureId(), 0, GL_TRUE, 0, GL_READ_ONLY, GL_RG32I);
+ }
+ else
+ {
+ theGlContext->core42->glBindImageTexture (OpenGl_RT_TileSamplesImage,
+ myRaytraceTileSamplesTexture[theStereoView]->TextureId(), 0, GL_TRUE, 0, GL_READ_WRITE, GL_R32I);
+ }
+ #else
+ (void )theStereoView;
+ #endif
}
+
+ const Handle(OpenGl_TextureSet)& anEnvTextureSet = myRaytraceParameters.CubemapForBack
+ ? myCubeMapParams->TextureSet (theGlContext)
+ : myTextureEnv;
+ if (!anEnvTextureSet.IsNull()
+ && !anEnvTextureSet->IsEmpty()
+ && anEnvTextureSet->First()->IsValid())
+ {
+ anEnvTextureSet->First()->Bind (theGlContext, OpenGl_RT_EnvMapTexture);
+ }
+
+ mySceneMinPointTexture ->BindTexture (theGlContext, OpenGl_RT_SceneMinPointTexture);
+ mySceneMaxPointTexture ->BindTexture (theGlContext, OpenGl_RT_SceneMaxPointTexture);
+ mySceneNodeInfoTexture ->BindTexture (theGlContext, OpenGl_RT_SceneNodeInfoTexture);
+ myGeometryVertexTexture ->BindTexture (theGlContext, OpenGl_RT_GeometryVertexTexture);
+ myGeometryNormalTexture ->BindTexture (theGlContext, OpenGl_RT_GeometryNormalTexture);
+ myGeometryTexCrdTexture ->BindTexture (theGlContext, OpenGl_RT_GeometryTexCrdTexture);
+ myGeometryTriangTexture ->BindTexture (theGlContext, OpenGl_RT_GeometryTriangTexture);
+ mySceneTransformTexture ->BindTexture (theGlContext, OpenGl_RT_SceneTransformTexture);
+ myRaytraceMaterialTexture->BindTexture (theGlContext, OpenGl_RT_RaytraceMaterialTexture);
+ myRaytraceLightSrcTexture->BindTexture (theGlContext, OpenGl_RT_RaytraceLightSrcTexture);
}
// =======================================================================
// =======================================================================
void OpenGl_View::unbindRaytraceTextures (const Handle(OpenGl_Context)& theGlContext)
{
- mySceneMinPointTexture->UnbindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_SceneMinPointTexture);
- mySceneMaxPointTexture->UnbindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_SceneMaxPointTexture);
- mySceneNodeInfoTexture->UnbindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_SceneNodeInfoTexture);
- myGeometryVertexTexture->UnbindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_GeometryVertexTexture);
- myGeometryNormalTexture->UnbindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_GeometryNormalTexture);
- myGeometryTexCrdTexture->UnbindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_GeometryTexCrdTexture);
- myGeometryTriangTexture->UnbindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_GeometryTriangTexture);
- mySceneTransformTexture->UnbindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_SceneTransformTexture);
- myRaytraceMaterialTexture->UnbindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_RaytraceMaterialTexture);
- myRaytraceLightSrcTexture->UnbindTexture (theGlContext, GL_TEXTURE0 + OpenGl_RT_RaytraceLightSrcTexture);
-
- if (!myOpenGlFBO.IsNull())
- {
- myOpenGlFBO->ColorTexture()->Unbind (theGlContext, GL_TEXTURE0 + OpenGl_RT_OpenGlColorTexture);
- myOpenGlFBO->DepthStencilTexture()->Unbind (theGlContext, GL_TEXTURE0 + OpenGl_RT_OpenGlDepthTexture);
- }
+ mySceneMinPointTexture ->UnbindTexture (theGlContext, OpenGl_RT_SceneMinPointTexture);
+ mySceneMaxPointTexture ->UnbindTexture (theGlContext, OpenGl_RT_SceneMaxPointTexture);
+ mySceneNodeInfoTexture ->UnbindTexture (theGlContext, OpenGl_RT_SceneNodeInfoTexture);
+ myGeometryVertexTexture ->UnbindTexture (theGlContext, OpenGl_RT_GeometryVertexTexture);
+ myGeometryNormalTexture ->UnbindTexture (theGlContext, OpenGl_RT_GeometryNormalTexture);
+ myGeometryTexCrdTexture ->UnbindTexture (theGlContext, OpenGl_RT_GeometryTexCrdTexture);
+ myGeometryTriangTexture ->UnbindTexture (theGlContext, OpenGl_RT_GeometryTriangTexture);
+ mySceneTransformTexture ->UnbindTexture (theGlContext, OpenGl_RT_SceneTransformTexture);
+ myRaytraceMaterialTexture->UnbindTexture (theGlContext, OpenGl_RT_RaytraceMaterialTexture);
+ myRaytraceLightSrcTexture->UnbindTexture (theGlContext, OpenGl_RT_RaytraceLightSrcTexture);
theGlContext->core15fwd->glActiveTexture (GL_TEXTURE0);
}
// =======================================================================
Standard_Boolean OpenGl_View::runRaytraceShaders (const Standard_Integer theSizeX,
const Standard_Integer theSizeY,
- const OpenGl_Vec3* theOrigins,
- const OpenGl_Vec3* theDirects,
- const OpenGl_Mat4& theViewMat,
- const OpenGl_Mat4& theUnviewMat,
Graphic3d_Camera::Projection theProjection,
OpenGl_FrameBuffer* theReadDrawFbo,
const Handle(OpenGl_Context)& theGlContext)
{
- bindRaytraceTextures (theGlContext);
-
- Handle(OpenGl_FrameBuffer) aRenderFramebuffer;
- Handle(OpenGl_FrameBuffer) aDepthSourceFramebuffer;
- Handle(OpenGl_FrameBuffer) anAccumFramebuffer;
+ Standard_Boolean aResult = theGlContext->BindProgram (myRaytraceProgram);
- // Choose proper set of framebuffers for stereo rendering
- Standard_Boolean isStereo = myCamera->ProjectionType() == Graphic3d_Camera::Projection_Stereo;
- Standard_Boolean isRightEye = theProjection == Graphic3d_Camera::Projection_MonoRightEye;
- Standard_Integer aFBOIdx = (isStereo && isRightEye) ? 1 : 0;
+ aResult &= setUniformState (0,
+ theSizeX,
+ theSizeY,
+ theProjection,
+ theGlContext);
- if (myRaytraceParameters.GlobalIllumination) // if path-tracing is used
+ if (myRaytraceParameters.GlobalIllumination) // path tracing
{
- aRenderFramebuffer = myAccumFrames % 2 ? myRaytraceFBO1[aFBOIdx] : myRaytraceFBO2[aFBOIdx];
- anAccumFramebuffer = myAccumFrames % 2 ? myRaytraceFBO2[aFBOIdx] : myRaytraceFBO1[aFBOIdx];
- aDepthSourceFramebuffer = aRenderFramebuffer;
-
- anAccumFramebuffer->ColorTexture()->Bind (
- theGlContext, GL_TEXTURE0 + OpenGl_RT_PrevAccumTexture);
-
- aRenderFramebuffer->BindBuffer (theGlContext);
+ aResult &= runPathtrace (theSizeX, theSizeY, theProjection, theGlContext);
+ aResult &= runPathtraceOut (theProjection, theReadDrawFbo, theGlContext);
}
- else if (myRenderParams.IsAntialiasingEnabled) // if 2-pass ray-tracing is used
+ else // Whitted-style ray-tracing
{
- myRaytraceFBO1[aFBOIdx]->BindBuffer (theGlContext);
+ aResult &= runRaytrace (theSizeX, theSizeY, theProjection, theReadDrawFbo, theGlContext);
}
- Standard_Boolean aResult = theGlContext->BindProgram (myRaytraceProgram);
+ return aResult;
+}
- aResult &= setUniformState (theOrigins,
- theDirects,
- theViewMat,
- theUnviewMat,
- 0, // ID of RT program
- theGlContext);
+// =======================================================================
+// function : runRaytrace
+// purpose : Runs Whitted-style ray-tracing
+// =======================================================================
+Standard_Boolean OpenGl_View::runRaytrace (const Standard_Integer theSizeX,
+ const Standard_Integer theSizeY,
+ Graphic3d_Camera::Projection theProjection,
+ OpenGl_FrameBuffer* theReadDrawFbo,
+ const Handle(OpenGl_Context)& theGlContext)
+{
+ Standard_Boolean aResult = Standard_True;
- if (myRaytraceParameters.GlobalIllumination)
- {
- if (myAccumFrames == 0)
- {
- myRNG.SetSeed();
- }
+ // Choose proper set of frame buffers for stereo rendering
+ const Standard_Integer aFBOIdx = (theProjection == Graphic3d_Camera::Projection_MonoRightEye) ? 1 : 0;
+ bindRaytraceTextures (theGlContext, aFBOIdx);
- // Set frame accumulation weight
- myRaytraceProgram->SetUniform (theGlContext,
- myUniformLocations[0][OpenGl_RT_uSampleWeight], 1.f / (myAccumFrames + 1));
+ if (myRenderParams.IsAntialiasingEnabled) // if second FSAA pass is used
+ {
+ myRaytraceFBO1[aFBOIdx]->BindBuffer (theGlContext);
- // Set random number generator seed
- myRaytraceProgram->SetUniform (theGlContext,
- myUniformLocations[0][OpenGl_RT_uFrameRndSeed], static_cast<Standard_Integer> (myRNG.NextInt() >> 2));
+ glClear (GL_DEPTH_BUFFER_BIT); // render the image with depth
}
theGlContext->core20fwd->glDrawArrays (GL_TRIANGLES, 0, 6);
- if (myRenderParams.IsAntialiasingEnabled && !myRenderParams.IsGlobalIlluminationEnabled)
+ if (myRenderParams.IsAntialiasingEnabled)
{
- glDepthMask (GL_FALSE);
+ glDisable (GL_DEPTH_TEST); // improve jagged edges without depth buffer
- myRaytraceFBO1[aFBOIdx]->ColorTexture()->Bind (theGlContext, GL_TEXTURE0 + OpenGl_RT_FsaaInputTexture);
+ // bind ray-tracing output image as input
+ myRaytraceFBO1[aFBOIdx]->ColorTexture()->Bind (theGlContext, OpenGl_RT_FsaaInputTexture);
aResult &= theGlContext->BindProgram (myPostFSAAProgram);
- aResult &= setUniformState (theOrigins,
- theDirects,
- theViewMat,
- theUnviewMat,
- 1, // ID of FSAA program
+ aResult &= setUniformState (1 /* FSAA ID */,
+ theSizeX,
+ theSizeY,
+ theProjection,
theGlContext);
// Perform multi-pass adaptive FSAA using ping-pong technique.
aResult &= myPostFSAAProgram->SetUniform (theGlContext,
myUniformLocations[1][OpenGl_RT_uOffsetY], aOffsetY);
- Handle(OpenGl_FrameBuffer)& aFramebuffer = anIt % 2 ? myRaytraceFBO2[aFBOIdx] : myRaytraceFBO1[aFBOIdx];
+ Handle(OpenGl_FrameBuffer)& aFramebuffer = anIt % 2
+ ? myRaytraceFBO2[aFBOIdx]
+ : myRaytraceFBO1[aFBOIdx];
aFramebuffer->BindBuffer (theGlContext);
+ // perform adaptive FSAA pass
theGlContext->core20fwd->glDrawArrays (GL_TRIANGLES, 0, 6);
- aFramebuffer->ColorTexture()->Bind (theGlContext, GL_TEXTURE0 + OpenGl_RT_FsaaInputTexture);
+ aFramebuffer->ColorTexture()->Bind (theGlContext, OpenGl_RT_FsaaInputTexture);
}
- aRenderFramebuffer = myRaytraceFBO2[aFBOIdx];
- aDepthSourceFramebuffer = myRaytraceFBO1[aFBOIdx];
- }
+ const Handle(OpenGl_FrameBuffer)& aRenderImageFramebuffer = myRaytraceFBO2[aFBOIdx];
+ const Handle(OpenGl_FrameBuffer)& aDepthSourceFramebuffer = myRaytraceFBO1[aFBOIdx];
- if (myRaytraceParameters.GlobalIllumination || myRenderParams.IsAntialiasingEnabled)
- {
- // Output accumulated image
- glDepthMask (GL_TRUE);
+ glEnable (GL_DEPTH_TEST);
+ // Display filtered image
theGlContext->BindProgram (myOutImageProgram);
- myOutImageProgram->SetUniform (theGlContext, "uApplyGamma", static_cast<Standard_Integer> (myRaytraceParameters.GlobalIllumination));
-
if (theReadDrawFbo != NULL)
{
theReadDrawFbo->BindBuffer (theGlContext);
}
else
{
- aRenderFramebuffer->UnbindBuffer (theGlContext);
+ aRenderImageFramebuffer->UnbindBuffer (theGlContext);
}
- aRenderFramebuffer->ColorTexture()->Bind (
- theGlContext, GL_TEXTURE0 + OpenGl_RT_PrevAccumTexture);
-
- aDepthSourceFramebuffer->DepthStencilTexture()->Bind (
- theGlContext, GL_TEXTURE0 + OpenGl_RT_DepthTexture);
+ aRenderImageFramebuffer->ColorTexture() ->Bind (theGlContext, OpenGl_RT_PrevAccumTexture);
+ aDepthSourceFramebuffer->DepthStencilTexture()->Bind (theGlContext, OpenGl_RT_RaytraceDepthTexture);
+ // copy the output image with depth values
theGlContext->core20fwd->glDrawArrays (GL_TRIANGLES, 0, 6);
- aDepthSourceFramebuffer->DepthStencilTexture()->Unbind (
- theGlContext, GL_TEXTURE0 + OpenGl_RT_DepthTexture);
-
- aRenderFramebuffer->ColorTexture()->Unbind (
- theGlContext, GL_TEXTURE0 + OpenGl_RT_PrevAccumTexture);
+ aDepthSourceFramebuffer->DepthStencilTexture()->Unbind (theGlContext, OpenGl_RT_RaytraceDepthTexture);
+ aRenderImageFramebuffer->ColorTexture() ->Unbind (theGlContext, OpenGl_RT_PrevAccumTexture);
}
unbindRaytraceTextures (theGlContext);
return aResult;
}
+// =======================================================================
+// function : runPathtrace
+// purpose : Runs path tracing shader
+// =======================================================================
+Standard_Boolean OpenGl_View::runPathtrace (const Standard_Integer theSizeX,
+ const Standard_Integer theSizeY,
+ const Graphic3d_Camera::Projection theProjection,
+ const Handle(OpenGl_Context)& theGlContext)
+{
+ if (myToUpdateEnvironmentMap) // check whether the map was changed
+ {
+ myAccumFrames = myToUpdateEnvironmentMap = 0;
+ }
+
+ if (myRenderParams.CameraApertureRadius != myPrevCameraApertureRadius
+ || myRenderParams.CameraFocalPlaneDist != myPrevCameraFocalPlaneDist)
+ {
+ myPrevCameraApertureRadius = myRenderParams.CameraApertureRadius;
+ myPrevCameraFocalPlaneDist = myRenderParams.CameraFocalPlaneDist;
+ myAccumFrames = 0;
+ }
+
+ // Choose proper set of frame buffers for stereo rendering
+ const Standard_Integer aFBOIdx = (theProjection == Graphic3d_Camera::Projection_MonoRightEye) ? 1 : 0;
+
+ if (myRaytraceParameters.AdaptiveScreenSampling)
+ {
+ if (myAccumFrames == 0)
+ {
+ myTileSampler.Reset(); // reset tile sampler to its initial state
+
+ // Adaptive sampling is starting at the second frame
+ if (myRaytraceParameters.AdaptiveScreenSamplingAtomic)
+ {
+ myTileSampler.UploadOffsets (theGlContext, myRaytraceTileOffsetsTexture[aFBOIdx], false);
+ }
+ else
+ {
+ myTileSampler.UploadSamples (theGlContext, myRaytraceTileSamplesTexture[aFBOIdx], false);
+ }
+
+ #if !defined(GL_ES_VERSION_2_0)
+ theGlContext->core44->glClearTexImage (myRaytraceOutputTexture[aFBOIdx]->TextureId(), 0, GL_RED, GL_FLOAT, NULL);
+ #endif
+ }
+
+ // Clear adaptive screen sampling images
+ #if !defined(GL_ES_VERSION_2_0)
+ theGlContext->core44->glClearTexImage (myRaytraceVisualErrorTexture[aFBOIdx]->TextureId(), 0, GL_RED_INTEGER, GL_INT, NULL);
+ #endif
+ }
+
+ bindRaytraceTextures (theGlContext, aFBOIdx);
+
+ const Handle(OpenGl_FrameBuffer)& anAccumImageFramebuffer = myAccumFrames % 2 ? myRaytraceFBO2[aFBOIdx] : myRaytraceFBO1[aFBOIdx];
+ anAccumImageFramebuffer->ColorTexture()->Bind (theGlContext, OpenGl_RT_PrevAccumTexture);
+
+ // Set frame accumulation weight
+ myRaytraceProgram->SetUniform (theGlContext, myUniformLocations[0][OpenGl_RT_uAccumSamples], myAccumFrames);
+
+ // Set image uniforms for render program
+ if (myRaytraceParameters.AdaptiveScreenSampling)
+ {
+ myRaytraceProgram->SetUniform (theGlContext, myUniformLocations[0][OpenGl_RT_uRenderImage], OpenGl_RT_OutputImage);
+ myRaytraceProgram->SetUniform (theGlContext, myUniformLocations[0][OpenGl_RT_uTilesImage], OpenGl_RT_TileSamplesImage);
+ myRaytraceProgram->SetUniform (theGlContext, myUniformLocations[0][OpenGl_RT_uOffsetImage], OpenGl_RT_TileOffsetsImage);
+ myRaytraceProgram->SetUniform (theGlContext, myUniformLocations[0][OpenGl_RT_uTileSize], myTileSampler.TileSize());
+ }
+
+ const Handle(OpenGl_FrameBuffer)& aRenderImageFramebuffer = myAccumFrames % 2 ? myRaytraceFBO1[aFBOIdx] : myRaytraceFBO2[aFBOIdx];
+ aRenderImageFramebuffer->BindBuffer (theGlContext);
+ if (myRaytraceParameters.AdaptiveScreenSampling
+ && myRaytraceParameters.AdaptiveScreenSamplingAtomic)
+ {
+ // extend viewport here, so that tiles at boundaries (cut tile size by target rendering viewport)
+ // redirected to inner tiles (full tile size) are drawn entirely
+ const Graphic3d_Vec2i anOffsetViewport = myTileSampler.OffsetTilesViewport (myAccumFrames > 1); // shrunk offsets texture will be uploaded since 3rd frame
+ glViewport (0, 0, anOffsetViewport.x(), anOffsetViewport.y());
+ }
+
+ // Generate for the given RNG seed
+ glDisable (GL_DEPTH_TEST);
+
+ // Adaptive Screen Sampling computes the same overall amount of samples per frame redraw as normal Path Tracing,
+ // but distributes them unequally across pixels (grouped in tiles), so that some pixels do not receive new samples at all.
+ //
+ // Offsets map (redirecting currently rendered tile to another tile) allows performing Adaptive Screen Sampling in single pass,
+ // but current implementation relies on atomic float operations (AdaptiveScreenSamplingAtomic) for this.
+ // So that when atomic floats are not supported by GPU, multi-pass rendering is used instead.
+ //
+ // Single-pass rendering is more optimal due to smaller amount of draw calls,
+ // memory synchronization barriers, discarding most of the fragments and bad parallelization in case of very small amount of tiles requiring more samples.
+ // However, atomic operations on float values still produces different result (close, but not bit exact) making non-regression testing not robust.
+ // It should be possible following single-pass rendering approach but using extra accumulation buffer and resolving pass as possible improvement.
+ const int aNbPasses = myRaytraceParameters.AdaptiveScreenSampling
+ && !myRaytraceParameters.AdaptiveScreenSamplingAtomic
+ ? myTileSampler.MaxTileSamples()
+ : 1;
+ if (myAccumFrames == 0)
+ {
+ myRNG.SetSeed(); // start RNG from beginning
+ }
+ for (int aPassIter = 0; aPassIter < aNbPasses; ++aPassIter)
+ {
+ myRaytraceProgram->SetUniform (theGlContext, myUniformLocations[0][OpenGl_RT_uFrameRndSeed], static_cast<Standard_Integer> (myRNG.NextInt() >> 2));
+ theGlContext->core20fwd->glDrawArrays (GL_TRIANGLES, 0, 6);
+ if (myRaytraceParameters.AdaptiveScreenSampling)
+ {
+ #if !defined(GL_ES_VERSION_2_0)
+ theGlContext->core44->glMemoryBarrier (GL_SHADER_IMAGE_ACCESS_BARRIER_BIT);
+ #endif
+ }
+ }
+ aRenderImageFramebuffer->UnbindBuffer (theGlContext);
+
+ if (myRaytraceParameters.AdaptiveScreenSampling
+ && myRaytraceParameters.AdaptiveScreenSamplingAtomic)
+ {
+ glViewport (0, 0, theSizeX, theSizeY);
+ }
+ return true;
+}
+
+// =======================================================================
+// function : runPathtraceOut
+// purpose :
+// =======================================================================
+Standard_Boolean OpenGl_View::runPathtraceOut (const Graphic3d_Camera::Projection theProjection,
+ OpenGl_FrameBuffer* theReadDrawFbo,
+ const Handle(OpenGl_Context)& theGlContext)
+{
+ // Output accumulated path traced image
+ theGlContext->BindProgram (myOutImageProgram);
+
+ // Choose proper set of frame buffers for stereo rendering
+ const Standard_Integer aFBOIdx = (theProjection == Graphic3d_Camera::Projection_MonoRightEye) ? 1 : 0;
+
+ if (myRaytraceParameters.AdaptiveScreenSampling)
+ {
+ // Set uniforms for display program
+ myOutImageProgram->SetUniform (theGlContext, "uRenderImage", OpenGl_RT_OutputImage);
+ myOutImageProgram->SetUniform (theGlContext, "uAccumFrames", myAccumFrames);
+ myOutImageProgram->SetUniform (theGlContext, "uVarianceImage", OpenGl_RT_VisualErrorImage);
+ myOutImageProgram->SetUniform (theGlContext, "uDebugAdaptive", myRenderParams.ShowSamplingTiles ? 1 : 0);
+ myOutImageProgram->SetUniform (theGlContext, "uTileSize", myTileSampler.TileSize());
+ myOutImageProgram->SetUniform (theGlContext, "uVarianceScaleFactor", myTileSampler.VarianceScaleFactor());
+ }
+
+ if (myRaytraceParameters.GlobalIllumination)
+ {
+ myOutImageProgram->SetUniform(theGlContext, "uExposure", myRenderParams.Exposure);
+ switch (myRaytraceParameters.ToneMappingMethod)
+ {
+ case Graphic3d_ToneMappingMethod_Disabled:
+ break;
+ case Graphic3d_ToneMappingMethod_Filmic:
+ myOutImageProgram->SetUniform (theGlContext, "uWhitePoint", myRenderParams.WhitePoint);
+ break;
+ }
+ }
+
+ if (theReadDrawFbo != NULL)
+ {
+ theReadDrawFbo->BindBuffer (theGlContext);
+ }
+
+ const Handle(OpenGl_FrameBuffer)& aRenderImageFramebuffer = myAccumFrames % 2 ? myRaytraceFBO1[aFBOIdx] : myRaytraceFBO2[aFBOIdx];
+ aRenderImageFramebuffer->ColorTexture()->Bind (theGlContext, OpenGl_RT_PrevAccumTexture);
+
+ // Copy accumulated image with correct depth values
+ glEnable (GL_DEPTH_TEST);
+ theGlContext->core20fwd->glDrawArrays (GL_TRIANGLES, 0, 6);
+
+ aRenderImageFramebuffer->ColorTexture()->Unbind (theGlContext, OpenGl_RT_PrevAccumTexture);
+
+ if (myRaytraceParameters.AdaptiveScreenSampling)
+ {
+ // Download visual error map from the GPU and build adjusted tile offsets for optimal image sampling
+ myTileSampler.GrabVarianceMap (theGlContext, myRaytraceVisualErrorTexture[aFBOIdx]);
+ if (myRaytraceParameters.AdaptiveScreenSamplingAtomic)
+ {
+ myTileSampler.UploadOffsets (theGlContext, myRaytraceTileOffsetsTexture[aFBOIdx], myAccumFrames != 0);
+ }
+ else
+ {
+ myTileSampler.UploadSamples (theGlContext, myRaytraceTileSamplesTexture[aFBOIdx], myAccumFrames != 0);
+ }
+ }
+
+ unbindRaytraceTextures (theGlContext);
+ theGlContext->BindProgram (NULL);
+ return true;
+}
+
// =======================================================================
// function : raytrace
// purpose : Redraws the window using OpenGL/GLSL ray-tracing
OpenGl_FrameBuffer* theReadDrawFbo,
const Handle(OpenGl_Context)& theGlContext)
{
- if (!initRaytraceResources (theGlContext))
+ if (!initRaytraceResources (theSizeX, theSizeY, theGlContext))
{
return Standard_False;
}
return Standard_False;
}
- if (!updateRaytraceEnvironmentMap (theGlContext))
- {
- return Standard_False;
- }
+ OpenGl_Mat4 aLightSourceMatrix;
- // Get model-view and projection matrices
- OpenGl_Mat4 aOrientationMatrix = myCamera->OrientationMatrixF();
- OpenGl_Mat4 aViewMappingMatrix = theGlContext->ProjectionState.Current();
+ // Get inversed model-view matrix for transforming lights
+ myCamera->OrientationMatrixF().Inverted (aLightSourceMatrix);
- OpenGl_Mat4 aInverOrientMatrix;
- aOrientationMatrix.Inverted (aInverOrientMatrix);
- if (!updateRaytraceLightSources (aInverOrientMatrix, theGlContext))
+ if (!updateRaytraceLightSources (aLightSourceMatrix, theGlContext))
{
return Standard_False;
}
- OpenGl_Vec3 aOrigins[4];
- OpenGl_Vec3 aDirects[4];
- OpenGl_Mat4 aViewMat;
- OpenGl_Mat4 anUnviewMat;
-
- updateCamera (aOrientationMatrix,
- aViewMappingMatrix,
- aOrigins,
- aDirects,
- aViewMat,
- anUnviewMat);
-
- if (theReadDrawFbo != NULL)
- {
- theReadDrawFbo->BindBuffer (theGlContext);
- }
-
- // Generate ray-traced image
+ // Generate image using Whitted-style ray-tracing or path tracing
if (myIsRaytraceDataValid)
{
myRaytraceScreenQuad.BindVertexAttrib (theGlContext, Graphic3d_TOA_POS);
0, GL_DEBUG_SEVERITY_MEDIUM, "Error: Failed to acquire OpenGL image textures");
}
- // Remember the old depth function and mask
- GLint aDepthFunc;
- theGlContext->core11fwd->glGetIntegerv (GL_DEPTH_FUNC, &aDepthFunc);
-
- GLboolean aDepthMask;
- theGlContext->core11fwd->glGetBooleanv (GL_DEPTH_WRITEMASK, &aDepthMask);
-
glDisable (GL_BLEND);
- glDepthFunc (GL_ALWAYS);
-
- Standard_Boolean aResult = runRaytraceShaders (theSizeX,
- theSizeY,
- aOrigins,
- aDirects,
- aViewMat,
- anUnviewMat,
- theProjection,
- theReadDrawFbo,
- theGlContext);
-
- // Restore depth function and mask
- glDepthFunc (aDepthFunc);
- glDepthMask (aDepthMask);
+
+ const Standard_Boolean aResult = runRaytraceShaders (theSizeX,
+ theSizeY,
+ theProjection,
+ theReadDrawFbo,
+ theGlContext);
if (!aResult)
{
projects / occt.git / blobdiff