X-Git-Url: http://git.dev.opencascade.org/gitweb/?p=occt.git;a=blobdiff_plain;f=src%2FOpenGl%2FOpenGl_Workspace.hxx;h=d2dbc078042eab63e3259f64e3b527b841c22cfc;hp=dac1880ea3287e20f204b9b39139d02fae70988a;hb=fc73a20256434f2b81c4c63cf3c9b6ec47b4122e;hpb=54e37688ef25fbe2a9199f7455527a1020709640 diff --git a/src/OpenGl/OpenGl_Workspace.hxx b/src/OpenGl/OpenGl_Workspace.hxx index dac1880ea3..d2dbc07804 100755 --- a/src/OpenGl/OpenGl_Workspace.hxx +++ b/src/OpenGl/OpenGl_Workspace.hxx @@ -16,12 +16,8 @@ #ifndef _OpenGl_Workspace_Header #define _OpenGl_Workspace_Header -#ifdef HAVE_OPENCL - #include - #include - - #include -#endif +#include +#include #include #include @@ -46,12 +42,11 @@ #include #include +#include #include #include #include -#ifdef HAVE_OPENCL - #include -#endif +#include #include #include #include @@ -59,6 +54,10 @@ #include #include +#include +#include +#include + class OpenGl_AspectLine; class OpenGl_AspectMarker; class OpenGl_AspectText; @@ -233,24 +232,119 @@ protected: void setTextureParams (Handle(OpenGl_Texture)& theTexture, const Handle(Graphic3d_TextureParams)& theParams); -#ifdef HAVE_OPENCL +protected: -public: + //! Result of OpenGL shaders initialization. + enum RaytraceInitStatus + { + OpenGl_RT_NONE, + OpenGl_RT_INIT, + OpenGl_RT_FAIL + }; - //! Returns information about OpenCL device used for computations. - Standard_Boolean GetOpenClDeviceInfo ( - NCollection_DataMap& theInfo) const; + //! Defines frequently used shader variables. + enum ShaderVariableIndex + { + OpenGl_RT_aPosition, + + OpenGl_RT_uOriginLT, + OpenGl_RT_uOriginLB, + OpenGl_RT_uOriginRT, + OpenGl_RT_uOriginRB, + + OpenGl_RT_uDirectLT, + OpenGl_RT_uDirectLB, + OpenGl_RT_uDirectRT, + OpenGl_RT_uDirectRB, + + OpenGl_RT_uSceneRad, + OpenGl_RT_uSceneEps, + + OpenGl_RT_uLightAmbnt, + OpenGl_RT_uLightCount, + + OpenGl_RT_uShadEnabled, + OpenGl_RT_uReflEnabled, + + OpenGl_RT_uInputTexture, + + OpenGl_RT_uOffsetX, + OpenGl_RT_uOffsetY, + OpenGl_RT_uSamples, + + OpenGl_RT_NbVariables // special field + }; -protected: + //! Defines texture samplers. + enum ShaderSamplerNames + { + OpenGl_RT_SceneNodeInfoTexture = 0, + OpenGl_RT_SceneMinPointTexture = 1, + OpenGl_RT_SceneMaxPointTexture = 2, + + OpenGl_RT_ObjectNodeInfoTexture = 3, + OpenGl_RT_ObjectMinPointTexture = 4, + OpenGl_RT_ObjectMaxPointTexture = 5, + + OpenGl_RT_GeometryVertexTexture = 6, + OpenGl_RT_GeometryNormalTexture = 7, + OpenGl_RT_GeometryTriangTexture = 8, - //! Describes result of OpenCL initializing. - enum OpenClInitStatus + OpenGl_RT_EnvironmentMapTexture = 9, + + OpenGl_RT_RaytraceMaterialTexture = 10, + OpenGl_RT_RaytraceLightSrcTexture = 11, + + OpenGl_RT_FSAAInputTexture = 12 + }; + + //! Tool class for management of shader sources. + class ShaderSource { - OpenGl_CLIS_NONE, - OpenGl_CLIS_INIT, - OpenGl_CLIS_FAIL + public: + + //! Creates new uninitialized shader source. + ShaderSource() + { + // + } + + //! Creates new shader source from specified file. + ShaderSource (const TCollection_AsciiString& theFileName) + { + Load (&theFileName, 1); + } + + public: + + //! Returns prefix to insert before the source. + const TCollection_AsciiString& Prefix() const + { + return myPrefix; + } + + //! Sets prefix to insert before the source. + void SetPrefix (const TCollection_AsciiString& thePrefix) + { + myPrefix = thePrefix; + } + + //! Returns shader source combined with prefix. + TCollection_AsciiString Source() const; + + //! Loads shader source from specified files. + void Load (const TCollection_AsciiString* theFileNames, const Standard_Integer theCount); + + private: + + TCollection_AsciiString mySource; //!< Source string of the shader object + TCollection_AsciiString myPrefix; //!< Prefix to insert before the source + }; + //! Default size of traversal stack. + static const Standard_Integer THE_DEFAULT_STACK_SIZE = 24; + protected: //! @name methods related to ray-tracing //! Updates 3D scene geometry for ray-tracing. @@ -301,47 +395,53 @@ protected: //! @name methods related to ray-tracing Standard_Boolean AddRaytracePolygonArray (OpenGl_TriangleSet* theSet, const CALL_DEF_PARRAY* theArray, Standard_Integer theOffset, Standard_Integer theCount, Standard_Integer theMatID); - //! Initializes OpenCL resources. - Standard_Boolean InitOpenCL(); + //! Loads and compiles shader object from specified source. + Handle(OpenGl_ShaderObject) LoadShader (const ShaderSource& theSource, GLenum theType); + + //! Performs safe exit when shaders initialization fails. + Standard_Boolean SafeFailBack (const TCollection_ExtendedString& theMessage); + + //! Initializes OpenGL/GLSL shader programs. + Standard_Boolean InitRaytraceResources(); - //! Releases OpenCL resources. - void ReleaseOpenCL(); + //! Releases OpenGL/GLSL shader programs. + void ReleaseRaytraceResources(); - //! Resizes OpenCL output image. - Standard_Boolean ResizeRaytraceOutputBuffer (const cl_int theSizeX, const cl_int theSizeY); + //! Uploads ray-trace data to the GPU. + Standard_Boolean UploadRaytraceData(); - //! Writes scene geometry to OpenCl device. - Standard_Boolean WriteRaytraceSceneToDevice(); + //! Resizes OpenGL frame buffers. + Standard_Boolean ResizeRaytraceBuffers (const Standard_Integer theSizeX, + const Standard_Integer theSizeY); - //! Runs OpenCL ray-tracing kernels. - Standard_Boolean RunRaytraceOpenCLKernelsOld (const Graphic3d_CView& theCView, - const GLfloat theOrigins[16], - const GLfloat theDirects[16], - const int theSizeX, - const int theSizeY); + //! Generates viewing rays for corners of screen quad. + void UpdateCamera (const NCollection_Mat4& theOrientation, + const NCollection_Mat4& theViewMapping, + OpenGl_Vec3 theOrigins[4], + OpenGl_Vec3 theDirects[4]); - //! Launches OpenCL ray-tracing kernels. - Standard_Boolean RunRaytraceOpenCLKernels (const Graphic3d_CView& theCView, - const Standard_ShortReal theOrigins[16], - const Standard_ShortReal theDirects[16], - const Standard_Integer theSizeX, - const Standard_Integer theSizeY); + //! Runs ray-tracing shader programs. + Standard_Boolean RunRaytraceShaders (const Graphic3d_CView& theCView, + const Standard_Integer theSizeX, + const Standard_Integer theSizeY, + const OpenGl_Vec3 theOrigins[4], + const OpenGl_Vec3 theDirects[4], + OpenGl_FrameBuffer* theFrameBuffer); - //! Redraws the window using OpenCL ray tracing. + //! Redraws the window using OpenGL/GLSL ray-tracing. Standard_Boolean Raytrace (const Graphic3d_CView& theCView, - const int theSizeX, const int theSizeY, const Tint theToSwap); + const Standard_Integer theSizeX, + const Standard_Integer theSizeY, + const Standard_Boolean theToSwap, + OpenGl_FrameBuffer* theFrameBuffer); protected: //! @name fields related to ray-tracing - //! Result of OpenCL initialization. - OpenClInitStatus myComputeInitStatus; - //! Is ATI/AMD OpenCL platform used? - Standard_Boolean myIsAmdComputePlatform; + //! Result of shaders initialization. + RaytraceInitStatus myComputeInitStatus; //! Is geometry data valid? Standard_Boolean myIsRaytraceDataValid; - //! Is geometry data musty be updated? - Standard_Boolean myToUpdateRaytraceData; //! 3D scene geometry data for ray-tracing. OpenGl_RaytraceGeometry myRaytraceGeometry; @@ -351,54 +451,57 @@ protected: //! @name fields related to ray-tracing //! Scene epsilon to prevent self-intersections. Standard_ShortReal myRaytraceSceneEpsilon; - //! OpenCL context. - cl_context myComputeContext; - //! OpenCL command queue. - cl_command_queue myComputeQueue; - //! OpenCL computing program. - cl_program myRaytraceProgram; - //! OpenCL ray-tracing render kernel. - cl_kernel myRaytraceRenderKernel; - //! OpenCL adaptive anti-aliasing kernel. - cl_kernel myRaytraceSmoothKernel; - - //! OpenCL image to store environment map. - cl_mem myRaytraceEnvironment; - //! OpenCL image to store rendering result. - cl_mem myRaytraceOutputImage; - //! OpenCL image to store anti-aliasing result. - cl_mem myRaytraceOutputImageAA; - - //! OpenGL texture to store rendering result. - Handle(OpenGl_Texture) myRaytraceOutputTexture; - //! OpenGL texture to store anti-aliasing result. - Handle(OpenGl_Texture) myRaytraceOutputTextureAA; - - //! OpenCL buffer of material properties. - cl_mem myRaytraceMaterialBuffer; - //! OpenCL buffer of light source properties. - cl_mem myRaytraceLightSourceBuffer; - - //! OpenCL buffer of vertex coords. - cl_mem myGeometryVertexBuffer; - //! OpenCL buffer of vertex normals. - cl_mem myGeometryNormalBuffer; - //! OpenCL buffer of triangle indices. - cl_mem myGeometryTriangBuffer; - - //! OpenCL buffer of data records of high-level BVH nodes. - cl_mem mySceneNodeInfoBuffer; - //! OpenCL buffer of minimum points of high-level BVH nodes. - cl_mem mySceneMinPointBuffer; - //! OpenCL buffer of maximum points of high-level BVH nodes. - cl_mem mySceneMaxPointBuffer; - - //! OpenCL buffer of data records of bottom-level BVH nodes. - cl_mem myObjectNodeInfoBuffer; - //! OpenCL buffer of minimum points of bottom-level BVH nodes. - cl_mem myObjectMinPointBuffer; - //! OpenCL buffer of maximum points of bottom-level BVH nodes. - cl_mem myObjectMaxPointBuffer; + //! Actual size of traversal stack in shader program. + Standard_Integer myTraversalStackSize; + + //! OpenGL/GLSL source of ray-tracing fragment shader. + ShaderSource myRaytraceShaderSource; + //! OpenGL/GLSL source of adaptive-AA fragment shader. + ShaderSource myPostFSAAShaderSource; + + //! OpenGL/GLSL ray-tracing fragment shader. + Handle(OpenGl_ShaderObject) myRaytraceShader; + //! OpenGL/GLSL adaptive-AA fragment shader. + Handle(OpenGl_ShaderObject) myPostFSAAShader; + + //! OpenGL/GLSL ray-tracing shader program. + Handle(OpenGl_ShaderProgram) myRaytraceProgram; + //! OpenGL/GLSL adaptive-AA shader program. + Handle(OpenGl_ShaderProgram) myPostFSAAProgram; + + //! Texture buffer of data records of high-level BVH nodes. + Handle(OpenGl_TextureBufferArb) mySceneNodeInfoTexture; + //! Texture buffer of minimum points of high-level BVH nodes. + Handle(OpenGl_TextureBufferArb) mySceneMinPointTexture; + //! Texture buffer of maximum points of high-level BVH nodes. + Handle(OpenGl_TextureBufferArb) mySceneMaxPointTexture; + + //! Texture buffer of data records of bottom-level BVH nodes. + Handle(OpenGl_TextureBufferArb) myObjectNodeInfoTexture; + //! Texture buffer of minimum points of bottom-level BVH nodes. + Handle(OpenGl_TextureBufferArb) myObjectMinPointTexture; + //! Texture buffer of maximum points of bottom-level BVH nodes. + Handle(OpenGl_TextureBufferArb) myObjectMaxPointTexture; + + //! Texture buffer of vertex coords. + Handle(OpenGl_TextureBufferArb) myGeometryVertexTexture; + //! Texture buffer of vertex normals. + Handle(OpenGl_TextureBufferArb) myGeometryNormalTexture; + //! Texture buffer of triangle indices. + Handle(OpenGl_TextureBufferArb) myGeometryTriangTexture; + + //! Texture buffer of material properties. + Handle(OpenGl_TextureBufferArb) myRaytraceMaterialTexture; + //! Texture buffer of light source properties. + Handle(OpenGl_TextureBufferArb) myRaytraceLightSrcTexture; + + //! Vertex buffer (VBO) for drawing dummy quad. + OpenGl_VertexBuffer myRaytraceScreenQuad; + + //! Framebuffer (FBO) to perform adaptive FSAA. + Handle(OpenGl_FrameBuffer) myRaytraceFBO1; + //! Framebuffer (FBO) to perform adaptive FSAA. + Handle(OpenGl_FrameBuffer) myRaytraceFBO2; //! State of OpenGL view. Standard_Size myViewModificationStatus; @@ -408,7 +511,8 @@ protected: //! @name fields related to ray-tracing //! State of OpenGL structures reflected to ray-tracing. std::map myStructureStates; -#endif // HAVE_OPENCL + //! Cached locations of frequently used uniform variables. + Standard_Integer myUniformLocations[2][OpenGl_RT_NbVariables]; protected: //! @name protected fields