void VideoLayerChromium::updateContentsIfDirty()
{
if (!m_contentsDirty)
return;
RenderLayerBacking* backing = static_cast<RenderLayerBacking*>(m_owner->client());
if (!backing || backing->paintingGoesToWindow())
return;
ASSERT(drawsContent());
m_skipsDraw = false;
VideoFrameChromium* frame = m_provider->getCurrentFrame();
if (!frame) {
m_skipsDraw = true;
m_provider->putCurrentFrame(frame);
return;
}
m_frameFormat = frame->format();
unsigned textureFormat = determineTextureFormat(frame);
if (textureFormat == GraphicsContext3D::INVALID_VALUE) {
// FIXME: Implement other paths.
notImplemented();
m_skipsDraw = true;
m_provider->putCurrentFrame(frame);
return;
}
if (frame->surfaceType() == VideoFrameChromium::TypeTexture) {
releaseCurrentFrame();
saveCurrentFrame(frame);
m_dirtyRect.setSize(FloatSize());
m_contentsDirty = false;
return;
}
// Allocate textures for planes if they are not allocated already, or
// reallocate textures that are the wrong size for the frame.
GraphicsContext3D* context = layerRendererContext();
bool texturesAllocated = allocateTexturesIfNeeded(context, frame, textureFormat);
if (!texturesAllocated) {
m_skipsDraw = true;
m_provider->putCurrentFrame(frame);
return;
}
// Update texture planes.
for (unsigned plane = 0; plane < frame->planes(); plane++) {
ASSERT(frame->requiredTextureSize(plane) == m_textureSizes[plane]);
updateTexture(context, m_textures[plane], frame->requiredTextureSize(plane), textureFormat, frame->data(plane));
}
m_dirtyRect.setSize(FloatSize());
m_contentsDirty = false;
m_provider->putCurrentFrame(frame);
}
void LayerChromium::updateContents()
{
RenderLayerBacking* backing = static_cast<RenderLayerBacking*>(m_owner->client());
if (backing && !backing->paintingGoesToWindow() && drawsContent())
m_owner->paintGraphicsLayerContents(*m_graphicsContext, IntRect(0, 0, m_bounds.width(), m_bounds.height()));
m_contentsDirty = false;
}
void ContentLayerChromium::updateContents()
{
RenderLayerBacking* backing = static_cast<RenderLayerBacking*>(m_owner->client());
if (!backing || backing->paintingGoesToWindow())
return;
ASSERT(drawsContent());
ASSERT(layerRenderer());
void* pixels = 0;
IntRect dirtyRect;
IntRect updateRect;
IntSize requiredTextureSize;
IntSize bitmapSize;
// FIXME: Remove this test when tiled layers are implemented.
if (requiresClippedUpdateRect()) {
// A layer with 3D transforms could require an arbitrarily large number
// of texels to be repainted, so ignore these layers until tiling is
// implemented.
if (!drawTransform().isIdentityOrTranslation()) {
m_skipsDraw = true;
return;
}
calculateClippedUpdateRect(dirtyRect, m_largeLayerDrawRect);
if (!layerRenderer()->checkTextureSize(m_largeLayerDrawRect.size())) {
m_skipsDraw = true;
return;
}
// If the portion of the large layer that's visible hasn't changed
// then we don't need to update it, _unless_ its contents have changed
// in which case we only update the dirty bits.
if (m_largeLayerDirtyRect == dirtyRect) {
if (!m_dirtyRect.intersects(dirtyRect))
return;
dirtyRect.intersect(IntRect(m_dirtyRect));
updateRect = dirtyRect;
requiredTextureSize = m_largeLayerDirtyRect.size();
} else {
m_largeLayerDirtyRect = dirtyRect;
requiredTextureSize = dirtyRect.size();
updateRect = IntRect(IntPoint(0, 0), dirtyRect.size());
}
} else {
dirtyRect = IntRect(m_dirtyRect);
IntRect boundsRect(IntPoint(0, 0), m_bounds);
requiredTextureSize = m_bounds;
// If the texture needs to be reallocated then we must redraw the entire
// contents of the layer.
if (requiredTextureSize != m_allocatedTextureSize)
dirtyRect = boundsRect;
else {
// Clip the dirtyRect to the size of the layer to avoid drawing
// outside the bounds of the backing texture.
dirtyRect.intersect(boundsRect);
}
updateRect = dirtyRect;
}
if (dirtyRect.isEmpty())
return;
#if PLATFORM(SKIA)
const SkBitmap* skiaBitmap = 0;
OwnPtr<skia::PlatformCanvas> canvas;
OwnPtr<PlatformContextSkia> skiaContext;
OwnPtr<GraphicsContext> graphicsContext;
canvas.set(new skia::PlatformCanvas(dirtyRect.width(), dirtyRect.height(), false));
skiaContext.set(new PlatformContextSkia(canvas.get()));
// This is needed to get text to show up correctly.
// FIXME: Does this take us down a very slow text rendering path?
skiaContext->setDrawingToImageBuffer(true);
graphicsContext.set(new GraphicsContext(reinterpret_cast<PlatformGraphicsContext*>(skiaContext.get())));
// Bring the canvas into the coordinate system of the paint rect.
canvas->translate(static_cast<SkScalar>(-dirtyRect.x()), static_cast<SkScalar>(-dirtyRect.y()));
m_owner->paintGraphicsLayerContents(*graphicsContext, dirtyRect);
const SkBitmap& bitmap = canvas->getDevice()->accessBitmap(false);
skiaBitmap = &bitmap;
ASSERT(skiaBitmap);
SkAutoLockPixels lock(*skiaBitmap);
SkBitmap::Config skiaConfig = skiaBitmap->config();
// FIXME: do we need to support more image configurations?
if (skiaConfig == SkBitmap::kARGB_8888_Config) {
pixels = skiaBitmap->getPixels();
bitmapSize = IntSize(skiaBitmap->width(), skiaBitmap->height());
}
#elif PLATFORM(CG)
Vector<uint8_t> tempVector;
int rowBytes = 4 * dirtyRect.width();
tempVector.resize(rowBytes * dirtyRect.height());
memset(tempVector.data(), 0, tempVector.size());
RetainPtr<CGColorSpaceRef> colorSpace(AdoptCF, CGColorSpaceCreateDeviceRGB());
RetainPtr<CGContextRef> contextCG(AdoptCF, CGBitmapContextCreate(tempVector.data(),
dirtyRect.width(), dirtyRect.height(), 8, rowBytes,
colorSpace.get(),
kCGImageAlphaPremultipliedFirst | kCGBitmapByteOrder32Host));
CGContextTranslateCTM(contextCG.get(), 0, dirtyRect.height());
CGContextScaleCTM(contextCG.get(), 1, -1);
GraphicsContext graphicsContext(contextCG.get());
// Translate the graphics context into the coordinate system of the dirty rect.
graphicsContext.translate(-dirtyRect.x(), -dirtyRect.y());
m_owner->paintGraphicsLayerContents(graphicsContext, dirtyRect);
pixels = tempVector.data();
bitmapSize = dirtyRect.size();
#else
#error "Need to implement for your platform."
#endif
unsigned textureId = m_contentsTexture;
if (!textureId)
textureId = layerRenderer()->createLayerTexture();
if (pixels)
updateTextureRect(pixels, bitmapSize, requiredTextureSize, updateRect, textureId);
}
void LayerChromium::updateTextureContents(unsigned int textureId)
{
RenderLayerBacking* backing = static_cast<RenderLayerBacking*>(m_owner->client());
if (backing && !backing->paintingGoesToWindow()) {
void* pixels = 0;
IntRect dirtyRect(m_dirtyRect);
IntSize requiredTextureSize;
IntSize bitmapSize;
#if PLATFORM(SKIA)
const SkBitmap* skiaBitmap = 0;
OwnPtr<skia::PlatformCanvas> canvas;
OwnPtr<PlatformContextSkia> skiaContext;
OwnPtr<GraphicsContext> graphicsContext;
if (drawsContent()) { // Layer contents must be drawn into a canvas.
// Clip the dirtyRect to the size of the layer to avoid drawing outside
// the bounds of the backing texture.
dirtyRect.intersect(IntRect(IntPoint(0, 0), m_bounds));
canvas.set(new skia::PlatformCanvas(dirtyRect.width(), dirtyRect.height(), false));
skiaContext.set(new PlatformContextSkia(canvas.get()));
// This is needed to get text to show up correctly. Without it,
// GDI renders with zero alpha and the text becomes invisible.
// Unfortunately, setting this to true disables cleartype.
// FIXME: Does this take us down a very slow text rendering path?
skiaContext->setDrawingToImageBuffer(true);
graphicsContext.set(new GraphicsContext(reinterpret_cast<PlatformGraphicsContext*>(skiaContext.get())));
// Bring the canvas into the coordinate system of the paint rect.
canvas->translate(static_cast<SkScalar>(-dirtyRect.x()), static_cast<SkScalar>(-dirtyRect.y()));
m_owner->paintGraphicsLayerContents(*graphicsContext, dirtyRect);
const SkBitmap& bitmap = canvas->getDevice()->accessBitmap(false);
skiaBitmap = &bitmap;
requiredTextureSize = m_bounds;
} else { // Layer is a container.
// The layer contains an Image.
NativeImageSkia* skiaImage = static_cast<NativeImageSkia*>(contents());
skiaBitmap = skiaImage;
requiredTextureSize = IntSize(skiaBitmap->width(), skiaBitmap->height());
}
ASSERT(skiaBitmap);
SkAutoLockPixels lock(*skiaBitmap);
SkBitmap::Config skiaConfig = skiaBitmap->config();
// FIXME: do we need to support more image configurations?
if (skiaConfig == SkBitmap::kARGB_8888_Config) {
pixels = skiaBitmap->getPixels();
bitmapSize = IntSize(skiaBitmap->width(), skiaBitmap->height());
}
#else
#error "Need to implement for your platform."
#endif
if (pixels) {
glBindTexture(GL_TEXTURE_2D, textureId);
// If the texture id or size changed since last time then we need to tell GL
// to re-allocate a texture.
if (m_allocatedTextureId != textureId || requiredTextureSize != m_allocatedTextureSize) {
ASSERT(bitmapSize == requiredTextureSize);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, requiredTextureSize.width(), requiredTextureSize.height(), 0, GL_RGBA, GL_UNSIGNED_BYTE, pixels);
m_allocatedTextureId = textureId;
m_allocatedTextureSize = requiredTextureSize;
} else {
ASSERT(dirtyRect.width() <= m_allocatedTextureSize.width() && dirtyRect.height() <= m_allocatedTextureSize.height());
ASSERT(dirtyRect.width() == bitmapSize.width() && dirtyRect.height() == bitmapSize.height());
glTexSubImage2D(GL_TEXTURE_2D, 0, dirtyRect.x(), dirtyRect.y(), dirtyRect.width(), dirtyRect.height(), GL_RGBA, GL_UNSIGNED_BYTE, pixels);
}
}
}
m_contentsDirty = false;
m_dirtyRect.setSize(FloatSize());
}
