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//
// Copyright (c) 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.
//
#include "libANGLE/TransformFeedback.h"
#include "libANGLE/Buffer.h"
#include "libANGLE/Caps.h"
#include "libANGLE/renderer/TransformFeedbackImpl.h"
namespace gl
{
TransformFeedback::TransformFeedback(rx::TransformFeedbackImpl* impl, GLuint id, const Caps &caps)
: RefCountObject(id),
mImplementation(impl),
mActive(false),
mPrimitiveMode(GL_NONE),
mPaused(false),
mGenericBuffer(),
mIndexedBuffers(caps.maxTransformFeedbackSeparateAttributes)
{
ASSERT(impl != NULL);
}
TransformFeedback::~TransformFeedback()
{
mGenericBuffer.set(nullptr);
for (size_t i = 0; i < mIndexedBuffers.size(); i++)
{
mIndexedBuffers[i].set(nullptr);
}
SafeDelete(mImplementation);
}
void TransformFeedback::begin(GLenum primitiveMode)
{
mActive = true;
mPrimitiveMode = primitiveMode;
mPaused = false;
mImplementation->begin(primitiveMode);
}
void TransformFeedback::end()
{
mActive = false;
mPrimitiveMode = GL_NONE;
mPaused = false;
mImplementation->end();
}
void TransformFeedback::pause()
{
mPaused = true;
mImplementation->pause();
}
void TransformFeedback::resume()
{
mPaused = false;
mImplementation->resume();
}
bool TransformFeedback::isActive() const
{
return mActive;
}
bool TransformFeedback::isPaused() const
{
return mPaused;
}
GLenum TransformFeedback::getPrimitiveMode() const
{
return mPrimitiveMode;
}
void TransformFeedback::bindGenericBuffer(Buffer *buffer)
{
mGenericBuffer.set(buffer);
mImplementation->bindGenericBuffer(mGenericBuffer);
}
const BindingPointer<Buffer> &TransformFeedback::getGenericBuffer() const
{
return mGenericBuffer;
}
void TransformFeedback::bindIndexedBuffer(size_t index, Buffer *buffer, size_t offset, size_t size)
{
ASSERT(index < mIndexedBuffers.size());
mIndexedBuffers[index].set(buffer, offset, size);
mImplementation->bindIndexedBuffer(index, mIndexedBuffers[index]);
}
const OffsetBindingPointer<Buffer> &TransformFeedback::getIndexedBuffer(size_t index) const
{
ASSERT(index < mIndexedBuffers.size());
return mIndexedBuffers[index];
}
size_t TransformFeedback::getIndexedBufferCount() const
{
return mIndexedBuffers.size();
}
rx::TransformFeedbackImpl *TransformFeedback::getImplementation()
{
return mImplementation;
}
const rx::TransformFeedbackImpl *TransformFeedback::getImplementation() const
{
return mImplementation;
}
}
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