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//
// 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
{
struct VertexAttribute;
class ProgramBinary;
struct VertexAttribCurrentValueData;
}
namespace rx
{
class BufferD3D;
class StreamingVertexBufferInterface;
class VertexBuffer;
class Renderer;
struct TranslatedAttribute
{
TranslatedAttribute() : active(false), attribute(NULL), currentValueType(GL_NONE),
offset(0), stride(0), vertexBuffer(NULL), storage(NULL),
serial(0), divisor(0) {};
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;
BufferD3D *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);
bool reserveSpaceForAttrib(const gl::VertexAttribute &attrib,
const gl::VertexAttribCurrentValueData ¤tValue,
GLsizei count,
GLsizei instances) const;
void invalidateMatchingStaticData(const gl::VertexAttribute &attrib,
const gl::VertexAttribCurrentValueData ¤tValue) const;
GLenum storeAttribute(const gl::VertexAttribute &attrib,
const gl::VertexAttribCurrentValueData ¤tValue,
TranslatedAttribute *translated,
GLint start,
GLsizei count,
GLsizei instances);
GLenum storeCurrentValue(const gl::VertexAttribute &attrib,
const gl::VertexAttribCurrentValueData ¤tValue,
TranslatedAttribute *translated,
gl::VertexAttribCurrentValueData *cachedValue,
size_t *cachedOffset,
StreamingVertexBufferInterface *buffer);
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_
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