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//
// 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;
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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