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/*
* Copyright (C) 2012 Research In Motion Limited. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#include "EGLImageLayerCompositingThreadClient.h"
#if USE(ACCELERATED_COMPOSITING)
#include "LayerCompositingThread.h"
#include <BlackBerryPlatformGLES2Program.h>
#include <BlackBerryPlatformGLES2SharedTexture.h>
#include <BlackBerryPlatformGraphics.h>
#include <BlackBerryPlatformLog.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>
using namespace BlackBerry::Platform::Graphics;
namespace WebCore {
EGLImageLayerCompositingThreadClient::~EGLImageLayerCompositingThreadClient()
{
// Someone should have called deleteTextures() by now
ASSERT(!m_textureAccessor);
}
void EGLImageLayerCompositingThreadClient::uploadTexturesIfNeeded(LayerCompositingThread*)
{
}
void EGLImageLayerCompositingThreadClient::drawTextures(LayerCompositingThread* layer, const GLES2Program& program, double /*scale*/, const FloatRect& /*clipRect*/)
{
if (!m_textureAccessor || !m_textureAccessor->textureID())
return;
glEnable(GL_BLEND);
glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
glUseProgram(program.m_program);
glUniform1f(program.opacityLocation(), layer->drawOpacity());
glVertexAttribPointer(program.positionLocation(), 2, GL_FLOAT, GL_FALSE, 0, layer->transformedBounds().data());
glVertexAttribPointer(program.texCoordLocation(), 2, GL_FLOAT, GL_FALSE, 0, layer->textureCoordinates(LayerCompositingThread::UpsideDown).data());
glBindTexture(GL_TEXTURE_2D, m_textureAccessor->textureID());
glDrawArrays(GL_TRIANGLE_FAN, 0, layer->transformedBounds().size());
}
void EGLImageLayerCompositingThreadClient::deleteTextures(LayerCompositingThread*)
{
delete m_textureAccessor;
m_textureAccessor = 0;
}
void EGLImageLayerCompositingThreadClient::bindContentsTexture(LayerCompositingThread*)
{
if (m_textureAccessor)
glBindTexture(GL_TEXTURE_2D, m_textureAccessor->textureID());
}
void EGLImageLayerCompositingThreadClient::setTextureAccessor(GLES2SharedTextureAccessor* textureAccessor)
{
if (m_textureAccessor == textureAccessor)
return;
delete m_textureAccessor;
m_textureAccessor = textureAccessor;
}
} // namespace WebCore
#endif // USE(ACCELERATED_COMPOSITING)
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