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      1 //
      2 // Copyright (c) 2013 The ANGLE Project Authors. All rights reserved.
      3 // Use of this source code is governed by a BSD-style license that can be
      4 // found in the LICENSE file.
      5 //
      6 // This class contains prototypes for representing GLES 3 Vertex Array Objects:
      7 //
      8 //   The buffer objects that are to be used by the vertex stage of the GL are collected
      9 //   together to form a vertex array object. All state related to the definition of data used
     10 //   by the vertex processor is encapsulated in a vertex array object.
     11 //
     12 
     13 #ifndef LIBGLESV2_VERTEXARRAY_H_
     14 #define LIBGLESV2_VERTEXARRAY_H_
     15 
     16 #include "common/RefCountObject.h"
     17 #include "libGLESv2/constants.h"
     18 #include "libGLESv2/VertexAttribute.h"
     19 
     20 namespace rx
     21 {
     22 class Renderer;
     23 }
     24 
     25 namespace gl
     26 {
     27 class Buffer;
     28 
     29 class VertexArray : public RefCountObject
     30 {
     31   public:
     32     VertexArray(rx::Renderer *renderer, GLuint id);
     33     ~VertexArray();
     34 
     35     const VertexAttribute& getVertexAttribute(unsigned int attributeIndex) const;
     36     void detachBuffer(GLuint bufferName);
     37     void setVertexAttribDivisor(GLuint index, GLuint divisor);
     38     void enableAttribute(unsigned int attributeIndex, bool enabledState);
     39     void setAttributeState(unsigned int attributeIndex, gl::Buffer *boundBuffer, GLint size, GLenum type,
     40                            bool normalized, bool pureInteger, GLsizei stride, const void *pointer);
     41 
     42     const VertexAttribute* getVertexAttributes() const { return mVertexAttributes; }
     43     Buffer *getElementArrayBuffer() const { return mElementArrayBuffer.get(); }
     44     void setElementArrayBuffer(Buffer *elementArrayBuffer) { mElementArrayBuffer.set(elementArrayBuffer); }
     45     GLuint getElementArrayBufferId() const { return mElementArrayBuffer.id(); }
     46 
     47   private:
     48     VertexAttribute mVertexAttributes[MAX_VERTEX_ATTRIBS];
     49     BindingPointer<Buffer> mElementArrayBuffer;
     50 };
     51 
     52 }
     53 
     54 #endif // LIBGLESV2_VERTEXARRAY_H_
     55