kc3-lang/angle/src/libGLESv2/renderer/VertexDataManager.h

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• Author : Geoff Lang
  Date : 2013-08-02 11:54:08
  Hash : a36ead4a
  Message : Updated VertexBuffer's getSpaceRequired and storeVertexAttributes methods to return bools and fixed some validation of parameters to prevent under and overflows. TRAC #23643 Signed-off-by: Nicolas Capens Signed-off-by: Shannon Woods Author: Geoff Lang

• src/libGLESv2/renderer/VertexDataManager.h

• //
  // Copyright (c) 2002-2012 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.
  //
  
  // VertexDataManager.h: Defines the VertexDataManager, a class that
  // runs the Buffer translation process.
  
  #ifndef LIBGLESV2_RENDERER_VERTEXDATAMANAGER_H_
  #define LIBGLESV2_RENDERER_VERTEXDATAMANAGER_H_
  
  #include "libGLESv2/Constants.h"
  #include "libGLESv2/VertexAttribute.h"
  #include "common/angleutils.h"
  
  namespace gl
  {
  class VertexAttribute;
  class ProgramBinary;
  struct VertexAttribCurrentValueData;
  }
  
  namespace rx
  {
  class BufferStorage;
  class StreamingVertexBufferInterface;
  class VertexBuffer;
  class Renderer;
  
  struct TranslatedAttribute
  {
      bool active;
  
      const gl::VertexAttribute *attribute;
      GLenum currentValueType;
      unsigned int offset;
      unsigned int stride;   // 0 means not to advance the read pointer at all
  
      VertexBuffer *vertexBuffer;
      BufferStorage *storage;
      unsigned int serial;
      unsigned int divisor;
  };
  
  class VertexDataManager
  {
    public:
      VertexDataManager(rx::Renderer *renderer);
      virtual ~VertexDataManager();
  
      GLenum prepareVertexData(const gl::VertexAttribute attribs[], const gl::VertexAttribCurrentValueData currentValues[],
                               gl::ProgramBinary *programBinary, GLint start, GLsizei count, TranslatedAttribute *outAttribs, GLsizei instances);
  
    private:
      DISALLOW_COPY_AND_ASSIGN(VertexDataManager);
  
      rx::Renderer *const mRenderer;
  
      StreamingVertexBufferInterface *mStreamingBuffer;
  
      gl::VertexAttribCurrentValueData mCurrentValue[gl::MAX_VERTEX_ATTRIBS];
  
      StreamingVertexBufferInterface *mCurrentValueBuffer[gl::MAX_VERTEX_ATTRIBS];
      std::size_t mCurrentValueOffsets[gl::MAX_VERTEX_ATTRIBS];
  };
  
  }
  
  #endif   // LIBGLESV2_RENDERER_VERTEXDATAMANAGER_H_