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#include "precompiled.h"
//
// Copyright (c) 2002-2014 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.
//
// Buffer.cpp: Implements the gl::Buffer class, representing storage of vertex and/or
// index data. Implements GL buffer objects and related functionality.
// [OpenGL ES 2.0.24] section 2.9 page 21.
#include "libGLESv2/Buffer.h"
#include "libGLESv2/renderer/BufferImpl.h"
#include "libGLESv2/renderer/Renderer.h"
namespace gl
{
Buffer::Buffer(rx::BufferImpl *impl, GLuint id)
: RefCountObject(id),
mBuffer(impl),
mUsage(GL_DYNAMIC_DRAW),
mSize(0),
mAccessFlags(0),
mMapped(GL_FALSE),
mMapPointer(NULL),
mMapOffset(0),
mMapLength(0)
{
}
Buffer::~Buffer()
{
delete mBuffer;
}
void Buffer::bufferData(const void *data, GLsizeiptr size, GLenum usage)
{
mUsage = usage;
mSize = size;
mBuffer->setData(data, size, usage);
}
void Buffer::bufferSubData(const void *data, GLsizeiptr size, GLintptr offset)
{
mBuffer->setSubData(data, size, offset);
}
void Buffer::copyBufferSubData(Buffer* source, GLintptr sourceOffset, GLintptr destOffset, GLsizeiptr size)
{
mBuffer->copySubData(source->getImplementation(), size, sourceOffset, destOffset);
}
GLvoid *Buffer::mapRange(GLintptr offset, GLsizeiptr length, GLbitfield access)
{
ASSERT(!mMapped);
ASSERT(offset + length <= mSize);
void *dataPointer = mBuffer->map(offset, length, access);
mMapped = GL_TRUE;
mMapPointer = static_cast<GLvoid*>(static_cast<GLubyte*>(dataPointer));
mMapOffset = static_cast<GLint64>(offset);
mMapLength = static_cast<GLint64>(length);
mAccessFlags = static_cast<GLint>(access);
return mMapPointer;
}
void Buffer::unmap()
{
ASSERT(mMapped);
mBuffer->unmap();
mMapped = GL_FALSE;
mMapPointer = NULL;
mMapOffset = 0;
mMapLength = 0;
mAccessFlags = 0;
}
void Buffer::markTransformFeedbackUsage()
{
// TODO: Only used by the DX11 backend. Refactor to a more appropriate place.
mBuffer->markTransformFeedbackUsage();
}
}
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