kc3-lang/angle/src/libANGLE/renderer/gl/VertexArrayGL.h

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• Hash : d9671226
  Author :
  Date : 2016-11-29T16:30:31
  

  Implement ES3.1 glDraw*Indirect entry points for OpenGL
  
  BUG=angleproject:1595
  TEST=dEQP-GLES31.functional.draw_indirect.*
  
  Change-Id: I82f5d0864e70d6e7abdccf5f10330ddfa099ec62
  Reviewed-on: https://chromium-review.googlesource.com/417250
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Corentin Wallez <cwallez@chromium.org>
  

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• src/libANGLE/renderer/gl/VertexArrayGL.h

• //
  // Copyright 2015 The ANGLE Project Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  //
  
  // VertexArrayGL.h: Defines the class interface for VertexArrayGL.
  
  #ifndef LIBANGLE_RENDERER_GL_VERTEXARRAYGL_H_
  #define LIBANGLE_RENDERER_GL_VERTEXARRAYGL_H_
  
  #include "libANGLE/renderer/VertexArrayImpl.h"
  
  namespace rx
  {
  
  class FunctionsGL;
  class StateManagerGL;
  
  class VertexArrayGL : public VertexArrayImpl
  {
    public:
      VertexArrayGL(const gl::VertexArrayState &data,
                    const FunctionsGL *functions,
                    StateManagerGL *stateManager);
      ~VertexArrayGL() override;
  
      gl::Error syncDrawArraysState(const gl::AttributesMask &activeAttributesMask,
                                    GLint first,
                                    GLsizei count,
                                    GLsizei instanceCount) const;
      gl::Error syncDrawElementsState(const gl::AttributesMask &activeAttributesMask,
                                      GLsizei count,
                                      GLenum type,
                                      const GLvoid *indices,
                                      GLsizei instanceCount,
                                      bool primitiveRestartEnabled,
                                      const GLvoid **outIndices) const;
      gl::Error syncElementArrayState() const;
  
      GLuint getVertexArrayID() const;
      GLuint getAppliedElementArrayBufferID() const;
  
      void syncState(const gl::VertexArray::DirtyBits &dirtyBits) override;
  
    private:
      gl::Error syncDrawState(const gl::AttributesMask &activeAttributesMask,
                              GLint first,
                              GLsizei count,
                              GLenum type,
                              const GLvoid *indices,
                              GLsizei instanceCount,
                              bool primitiveRestartEnabled,
                              const GLvoid **outIndices) const;
  
      // Apply index data, only sets outIndexRange if attributesNeedStreaming is true
      gl::Error syncIndexData(GLsizei count,
                              GLenum type,
                              const GLvoid *indices,
                              bool primitiveRestartEnabled,
                              bool attributesNeedStreaming,
                              gl::IndexRange *outIndexRange,
                              const GLvoid **outIndices) const;
  
      // Returns the amount of space needed to stream all attributes that need streaming
      // and the data size of the largest attribute
      void computeStreamingAttributeSizes(const gl::AttributesMask &activeAttributesMask,
                                          GLsizei instanceCount,
                                          const gl::IndexRange &indexRange,
                                          size_t *outStreamingDataSize,
                                          size_t *outMaxAttributeDataSize) const;
  
      // Stream attributes that have client data
      gl::Error streamAttributes(const gl::AttributesMask &activeAttributesMask,
                                 GLsizei instanceCount,
                                 const gl::IndexRange &indexRange) const;
  
      void updateNeedsStreaming(size_t attribIndex);
      void updateAttribEnabled(size_t attribIndex);
      void updateAttribPointer(size_t attribIndex);
  
      const FunctionsGL *mFunctions;
      StateManagerGL *mStateManager;
  
      GLuint mVertexArrayID;
  
      mutable BindingPointer<gl::Buffer> mAppliedElementArrayBuffer;
      mutable std::vector<gl::VertexAttribute> mAppliedAttributes;
  
      mutable size_t mStreamingElementArrayBufferSize;
      mutable GLuint mStreamingElementArrayBuffer;
  
      mutable size_t mStreamingArrayBufferSize;
      mutable GLuint mStreamingArrayBuffer;
  
      gl::AttributesMask mAttributesNeedStreaming;
  };
  
  }
  
  #endif // LIBANGLE_RENDERER_GL_VERTEXARRAYGL_H_
  

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