void GraphicsLayerTextureMapper::updateBackingStoreIfNeeded()
{
TextureMapper* textureMapper = m_layer->textureMapper();
if (!textureMapper)
return;
if (!shouldHaveBackingStore()) {
ASSERT(!m_backingStore);
return;
}
ASSERT(m_backingStore);
IntRect dirtyRect = enclosingIntRect(FloatRect(FloatPoint::zero(), m_size));
if (!m_needsDisplay)
dirtyRect.intersect(enclosingIntRect(m_needsDisplayRect));
if (dirtyRect.isEmpty())
return;
#if PLATFORM(QT) && !defined(QT_NO_DYNAMIC_CAST)
ASSERT(dynamic_cast<TextureMapperTiledBackingStore*>(m_backingStore.get()));
#endif
TextureMapperTiledBackingStore* backingStore = static_cast<TextureMapperTiledBackingStore*>(m_backingStore.get());
backingStore->updateContents(textureMapper, this, m_size, dirtyRect, BitmapTexture::UpdateCanModifyOriginalImageData);
m_needsDisplay = false;
m_needsDisplayRect = IntRect();
}
void GraphicsLayerTextureMapper::updateBackingStoreIfNeeded()
{
TextureMapper* textureMapper = m_layer.textureMapper();
if (!textureMapper)
return;
if (!shouldHaveBackingStore()) {
ASSERT(!m_backingStore);
return;
}
ASSERT(m_backingStore);
IntRect dirtyRect = enclosingIntRect(FloatRect(FloatPoint::zero(), m_size));
if (!m_needsDisplay)
dirtyRect.intersect(enclosingIntRect(m_needsDisplayRect));
if (dirtyRect.isEmpty())
return;
TextureMapperTiledBackingStore* backingStore = static_cast<TextureMapperTiledBackingStore*>(m_backingStore.get());
backingStore->updateContentsScale(pageScaleFactor() * deviceScaleFactor());
dirtyRect.scale(pageScaleFactor() * deviceScaleFactor());
backingStore->updateContents(*textureMapper, this, m_size, dirtyRect, BitmapTexture::UpdateCanModifyOriginalImageData);
m_needsDisplay = false;
m_needsDisplayRect = IntRect();
}
void GraphicsLayerTextureMapper::prepareBackingStore()
{
TextureMapper* textureMapper = m_layer->textureMapper();
if (!textureMapper)
return;
if (!shouldHaveBackingStore()) {
m_backingStore.clear();
return;
}
IntRect dirtyRect = enclosingIntRect(FloatRect(FloatPoint::zero(), m_size));
if (!m_needsDisplay)
dirtyRect.intersect(enclosingIntRect(m_needsDisplayRect));
if (dirtyRect.isEmpty())
return;
if (!m_backingStore)
m_backingStore = TextureMapperTiledBackingStore::create();
#if PLATFORM(QT)
ASSERT(dynamic_cast<TextureMapperTiledBackingStore*>(m_backingStore.get()));
#endif
TextureMapperTiledBackingStore* backingStore = static_cast<TextureMapperTiledBackingStore*>(m_backingStore.get());
if (isShowingRepaintCounter())
incrementRepaintCount();
// Paint into an intermediate buffer to avoid painting content more than once.
bool paintOnce = true;
const IntSize maxTextureSize = textureMapper->maxTextureSize();
// We need to paint directly if the dirty rect exceeds one of the maximum dimensions.
if (dirtyRect.width() > maxTextureSize.width() || dirtyRect.height() > maxTextureSize.height())
paintOnce = false;
if (paintOnce) {
OwnPtr<ImageBuffer> imageBuffer = ImageBuffer::create(dirtyRect.size());
GraphicsContext* context = imageBuffer->context();
context->setImageInterpolationQuality(textureMapper->imageInterpolationQuality());
context->setTextDrawingMode(textureMapper->textDrawingMode());
context->translate(-dirtyRect.x(), -dirtyRect.y());
paintGraphicsLayerContents(*context, dirtyRect);
if (isShowingRepaintCounter())
drawRepaintCounter(context);
RefPtr<Image> image = imageBuffer->copyImage(DontCopyBackingStore);
backingStore->updateContents(textureMapper, image.get(), m_size, dirtyRect, BitmapTexture::UpdateCanModifyOriginalImageData);
} else
backingStore->updateContents(textureMapper, this, m_size, dirtyRect, BitmapTexture::UpdateCanModifyOriginalImageData);
backingStore->setShowDebugBorders(isShowingDebugBorder());
backingStore->setDebugBorder(m_debugBorderColor, m_debugBorderWidth);
m_needsDisplay = false;
m_needsDisplayRect = IntRect();
}
