kc3-lang/angle/src/libANGLE/VertexArray.h

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• Hash : 8e34494f
  Author :
  Date : 2015-07-09T14:22:07
  

  Share data between VertexArray and Impl.
  
  Using the same design as for the Framebuffer::Data helper, we can
  use a struct to share between the object and the Impl. This also
  gives the Impl access to the maxEnabledAttrib, and saves some
  duplicated storage.
  
  BUG=angleproject:1040
  TEST=WebGL CTS, end2end_tests, unittests
  
  Change-Id: I55c91e8a5f3dcae302cab441182320aafd5375ef
  Reviewed-on: https://chromium-review.googlesource.com/283930
  Tested-by: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Corentin Wallez <cwallez@chromium.org>
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  

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• src/libANGLE/VertexArray.h

• //
  // Copyright (c) 2013 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.
  //
  // This class contains prototypes for representing GLES 3 Vertex Array Objects:
  //
  //   The buffer objects that are to be used by the vertex stage of the GL are collected
  //   together to form a vertex array object. All state related to the definition of data used
  //   by the vertex processor is encapsulated in a vertex array object.
  //
  
  #ifndef LIBANGLE_VERTEXARRAY_H_
  #define LIBANGLE_VERTEXARRAY_H_
  
  #include "libANGLE/RefCountObject.h"
  #include "libANGLE/Constants.h"
  #include "libANGLE/VertexAttribute.h"
  
  #include <vector>
  
  namespace rx
  {
  class ImplFactory;
  class VertexArrayImpl;
  }
  
  namespace gl
  {
  class Buffer;
  
  class VertexArray
  {
    public:
      VertexArray(rx::ImplFactory *factory, GLuint id, size_t maxAttribs);
      ~VertexArray();
  
      GLuint id() const;
  
      const VertexAttribute &getVertexAttribute(size_t attributeIndex) const;
  
      void detachBuffer(GLuint bufferName);
      void setVertexAttribDivisor(size_t index, GLuint divisor);
      void enableAttribute(size_t attributeIndex, bool enabledState);
      void setAttributeState(size_t attributeIndex, gl::Buffer *boundBuffer, GLint size, GLenum type,
                             bool normalized, bool pureInteger, GLsizei stride, const void *pointer);
  
      void setElementArrayBuffer(Buffer *buffer);
  
      const BindingPointer<Buffer> &getElementArrayBuffer() const { return mData.getElementArrayBuffer(); }
      size_t getMaxAttribs() const { return mData.getVertexAttributes().size(); }
      const std::vector<VertexAttribute> &getVertexAttributes() const { return mData.getVertexAttributes(); }
  
      rx::VertexArrayImpl *getImplementation() { return mVertexArray; }
      const rx::VertexArrayImpl *getImplementation() const { return mVertexArray; }
  
      size_t getMaxEnabledAttribute() const { return mData.getMaxEnabledAttribute(); }
  
      class Data final : public angle::NonCopyable
      {
        public:
          explicit Data(size_t maxAttribs);
          ~Data();
  
          const BindingPointer<Buffer> &getElementArrayBuffer() const { return mElementArrayBuffer; }
          size_t getMaxAttribs() const { return mVertexAttributes.size(); }
          size_t getMaxEnabledAttribute() const { return mMaxEnabledAttribute; }
          const std::vector<VertexAttribute> &getVertexAttributes() const { return mVertexAttributes; }
  
        private:
          friend class VertexArray;
          std::vector<VertexAttribute> mVertexAttributes;
          BindingPointer<Buffer> mElementArrayBuffer;
          size_t mMaxEnabledAttribute;
      };
  
    private:
      GLuint mId;
  
      rx::VertexArrayImpl *mVertexArray;
  
      Data mData;
  };
  
  }
  
  #endif // LIBANGLE_VERTEXARRAY_H_
  

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