#ifndef _OpenGl_Workspace_Header
#define _OpenGl_Workspace_Header
-#ifdef HAVE_OPENCL
- #include <map>
- #include <set>
-
- #include <OpenGl_Cl.hxx>
-#endif
+#include <map>
+#include <set>
#include <Handle_OpenGl_Workspace.hxx>
#include <OpenGl_Window.hxx>
#include <OpenGl_AspectFace.hxx>
#include <OpenGl_Display.hxx>
+#include <OpenGl_FrameBuffer.hxx>
#include <OpenGl_Matrix.hxx>
#include <OpenGl_NamedStatus.hxx>
#include <OpenGl_PrinterContext.hxx>
-#ifdef HAVE_OPENCL
- #include <OpenGl_SceneGeometry.hxx>
-#endif
+#include <OpenGl_SceneGeometry.hxx>
#include <OpenGl_TextParam.hxx>
#include <OpenGl_RenderFilter.hxx>
#include <OpenGl_Vec.hxx>
#include <Handle_OpenGl_View.hxx>
#include <Handle_OpenGl_Texture.hxx>
+#include <OpenGl_ShaderObject.hxx>
+#include <OpenGl_ShaderProgram.hxx>
+#include <OpenGl_TextureBufferArb.hxx>
+
class OpenGl_AspectLine;
class OpenGl_AspectMarker;
class OpenGl_AspectText;
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<TCollection_AsciiString, TCollection_AsciiString>& 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.
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<GLdouble>& theOrientation,
+ const NCollection_Mat4<GLdouble>& 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;
//! 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;
//! State of OpenGL structures reflected to ray-tracing.
std::map<const OpenGl_Structure*, Standard_Size> myStructureStates;
-#endif // HAVE_OPENCL
+ //! Cached locations of frequently used uniform variables.
+ Standard_Integer myUniformLocations[2][OpenGl_RT_NbVariables];
protected: //! @name protected fields
projects / occt.git / blobdiff