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/*
* Copyright 2010, The Android Open Source Project
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#define LOG_TAG "TileTexture"
#define LOG_NDEBUG 1
#include "config.h"
#include "TileTexture.h"
#include "AndroidLog.h"
#include "Tile.h"
#include "ClassTracker.h"
#include "DrawQuadData.h"
#include "GLUtils.h"
#include "GLWebViewState.h"
#include "TextureOwner.h"
#include "TilesManager.h"
namespace WebCore {
TileTexture::TileTexture(uint32_t w, uint32_t h)
: m_owner(0)
, m_isPureColor(false)
{
m_size.set(w, h);
m_ownTextureId = 0;
#ifdef DEBUG_COUNT
ClassTracker::instance()->increment("TileTexture");
#endif
}
TileTexture::~TileTexture()
{
#ifdef DEBUG_COUNT
ClassTracker::instance()->decrement("TileTexture");
#endif
}
void TileTexture::requireGLTexture()
{
if (!m_ownTextureId)
m_ownTextureId = GLUtils::createTileGLTexture(m_size.width(), m_size.height());
}
void TileTexture::discardGLTexture()
{
if (m_ownTextureId)
GLUtils::deleteTexture(&m_ownTextureId);
if (m_owner) {
// clear both Tile->Texture and Texture->Tile links
m_owner->removeTexture(this);
release(m_owner);
}
}
bool TileTexture::acquire(TextureOwner* owner)
{
if (m_owner == owner)
return true;
return setOwner(owner);
}
bool TileTexture::setOwner(TextureOwner* owner)
{
bool proceed = true;
if (m_owner && m_owner != owner)
proceed = m_owner->removeTexture(this);
if (proceed) {
m_owner = owner;
return true;
}
return false;
}
bool TileTexture::release(TextureOwner* owner)
{
ALOGV("texture %p releasing tile %p, m_owner %p", this, owner, m_owner);
if (m_owner != owner)
return false;
m_owner = 0;
return true;
}
void TileTexture::transferComplete()
{
if (m_owner) {
Tile* owner = static_cast<Tile*>(m_owner);
owner->backTextureTransfer();
} else
ALOGE("ERROR: owner missing after transfer of texture %p", this);
}
void TileTexture::drawGL(bool isLayer, const SkRect& rect, float opacity,
const TransformationMatrix* transform,
bool forceBlending, bool usePointSampling,
const FloatRect& fillPortion)
{
ShaderProgram* shader = TilesManager::instance()->shader();
if (isLayer && !transform) {
ALOGE("ERROR: Missing tranform for layers!");
return;
}
// For base layer, we just follow the forceBlending, otherwise, blending is
// always turned on.
// TODO: Don't blend tiles if they are fully opaque.
bool useBlending = forceBlending || isLayer;
DrawQuadData commonData(isLayer ? LayerQuad : BaseQuad, transform, &rect,
opacity, useBlending, fillPortion);
if (isPureColor()) {
PureColorQuadData data(commonData, pureColor());
shader->drawQuad(&data);
} else {
GLint filter = usePointSampling ? GL_NEAREST : GL_LINEAR;
TextureQuadData data(commonData, m_ownTextureId, GL_TEXTURE_2D, filter);
shader->drawQuad(&data);
}
}
} // namespace WebCore
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