PassOwnPtr<LayerTextureUpdater> ContentLayerChromium::createTextureUpdater()
{
OwnPtr<LayerPainterChromium> painter = adoptPtr(new ContentLayerPainter(m_owner));
#if USE(SKIA)
if (layerRenderer()->accelerateDrawing())
return adoptPtr(new LayerTextureUpdaterSkPicture(layerRendererContext(), painter.release(), layerRenderer()->skiaContext()));
#endif
return adoptPtr(new LayerTextureUpdaterBitmap(layerRendererContext(), painter.release(), layerRenderer()->contextSupportsMapSub()));
}
void ContentLayerChromium::draw()
{
if (m_skipsDraw)
return;
ASSERT(layerRenderer());
const ContentLayerChromium::SharedValues* sv = layerRenderer()->contentLayerSharedValues();
ASSERT(sv && sv->initialized());
GraphicsContext3D* context = layerRendererContext();
GLC(context, context->activeTexture(GraphicsContext3D::TEXTURE0));
GLC(context, context->bindTexture(GraphicsContext3D::TEXTURE_2D, m_contentsTexture));
layerRenderer()->useShader(sv->contentShaderProgram());
GLC(context, context->uniform1i(sv->shaderSamplerLocation(), 0));
if (requiresClippedUpdateRect()) {
float m43 = drawTransform().m43();
TransformationMatrix transform;
transform.translate3d(m_largeLayerDrawRect.center().x(), m_largeLayerDrawRect.center().y(), m43);
drawTexturedQuad(context, layerRenderer()->projectionMatrix(),
transform, m_largeLayerDrawRect.width(),
m_largeLayerDrawRect.height(), drawOpacity(),
sv->shaderMatrixLocation(), sv->shaderAlphaLocation());
} else {
drawTexturedQuad(context, layerRenderer()->projectionMatrix(),
drawTransform(), m_bounds.width(), m_bounds.height(),
drawOpacity(), sv->shaderMatrixLocation(),
sv->shaderAlphaLocation());
}
}
void ContentLayerChromium::updateTextureRect(void* pixels, const IntSize& bitmapSize, const IntSize& requiredTextureSize, const IntRect& updateRect, unsigned textureId)
{
if (!pixels)
return;
GraphicsContext3D* context = layerRendererContext();
context->bindTexture(GraphicsContext3D::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_contentsTexture != textureId || requiredTextureSize != m_allocatedTextureSize) {
ASSERT(bitmapSize == requiredTextureSize);
GLC(context, context->texImage2D(GraphicsContext3D::TEXTURE_2D, 0, GraphicsContext3D::RGBA, requiredTextureSize.width(), requiredTextureSize.height(), 0, GraphicsContext3D::RGBA, GraphicsContext3D::UNSIGNED_BYTE, pixels));
m_contentsTexture = textureId;
m_allocatedTextureSize = requiredTextureSize;
} else {
ASSERT(updateRect.width() <= m_allocatedTextureSize.width() && updateRect.height() <= m_allocatedTextureSize.height());
ASSERT(updateRect.width() == bitmapSize.width() && updateRect.height() == bitmapSize.height());
GLC(context, context->texSubImage2D(GraphicsContext3D::TEXTURE_2D, 0, updateRect.x(), updateRect.y(), updateRect.width(), updateRect.height(), GraphicsContext3D::RGBA, GraphicsContext3D::UNSIGNED_BYTE, pixels));
}
m_dirtyRect.setSize(FloatSize());
// Large layers always stay dirty, because they need to update when the content rect changes.
m_contentsDirty = requiresClippedUpdateRect();
}
void VideoLayerChromium::drawYUV(const SharedValues* sv)
{
GraphicsContext3D* context = layerRendererContext();
GLC(context, context->activeTexture(GraphicsContext3D::TEXTURE1));
GLC(context, context->bindTexture(GraphicsContext3D::TEXTURE_2D, m_textures[VideoFrameChromium::yPlane]));
GLC(context, context->activeTexture(GraphicsContext3D::TEXTURE2));
GLC(context, context->bindTexture(GraphicsContext3D::TEXTURE_2D, m_textures[VideoFrameChromium::uPlane]));
GLC(context, context->activeTexture(GraphicsContext3D::TEXTURE3));
GLC(context, context->bindTexture(GraphicsContext3D::TEXTURE_2D, m_textures[VideoFrameChromium::vPlane]));
layerRenderer()->useShader(sv->yuvShaderProgram());
unsigned frameWidth = m_frameSizes[VideoFrameChromium::yPlane].width();
unsigned textureWidth = m_textureSizes[VideoFrameChromium::yPlane].width();
float widthScaleFactor = static_cast<float>(frameWidth) / textureWidth;
GLC(context, context->uniform1f(sv->yuvWidthScaleFactorLocation(), widthScaleFactor));
GLC(context, context->uniform1i(sv->yTextureLocation(), 1));
GLC(context, context->uniform1i(sv->uTextureLocation(), 2));
GLC(context, context->uniform1i(sv->vTextureLocation(), 3));
GLC(context, context->uniformMatrix3fv(sv->ccMatrixLocation(), 0, const_cast<float*>(yuv2RGB), 1));
drawTexturedQuad(context, layerRenderer()->projectionMatrix(), drawTransform(),
bounds().width(), bounds().height(), drawOpacity(),
sv->yuvShaderMatrixLocation(), sv->yuvAlphaLocation());
// Reset active texture back to texture 0.
GLC(context, context->activeTexture(GraphicsContext3D::TEXTURE0));
}
void Canvas2DLayerChromium::updateCompositorResources()
{
if (!m_contentsDirty || !m_drawingBuffer)
return;
if (m_textureChanged) { // We have to generate a new backing texture.
GraphicsContext3D* context = layerRendererContext();
if (m_textureId)
context->deleteTexture(m_textureId);
m_textureId = context->createTexture();
context->activeTexture(GraphicsContext3D::TEXTURE0);
context->bindTexture(GraphicsContext3D::TEXTURE_2D, m_textureId);
IntSize size = m_drawingBuffer->size();
context->texImage2DResourceSafe(GraphicsContext3D::TEXTURE_2D, 0, GraphicsContext3D::RGBA, size.width(), size.height(), 0, GraphicsContext3D::RGBA, GraphicsContext3D::UNSIGNED_BYTE);
// Set the min-mag filters to linear and wrap modes to GraphicsContext3D::CLAMP_TO_EDGE
// to get around NPOT texture limitations of GLES.
context->texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_MIN_FILTER, GraphicsContext3D::LINEAR);
context->texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_MAG_FILTER, GraphicsContext3D::LINEAR);
context->texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_WRAP_S, GraphicsContext3D::CLAMP_TO_EDGE);
context->texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_WRAP_T, GraphicsContext3D::CLAMP_TO_EDGE);
m_textureChanged = false;
// FIXME: The finish() here is required because we have to make sure that the texture created in this
// context (the compositor context) is actually created by the service side before the child context
// attempts to use it (in publishToPlatformLayer). finish() is currently the only call with strong
// enough semantics to promise this, but is actually much stronger. Ideally we'd do something like
// inserting a fence here and waiting for it before trying to publish.
context->finish();
}
// Update the contents of the texture used by the compositor.
if (m_contentsDirty) {
m_drawingBuffer->publishToPlatformLayer();
m_contentsDirty = false;
}
}
Canvas2DLayerChromium::~Canvas2DLayerChromium()
{
if (m_textureId)
layerRendererContext()->deleteTexture(m_textureId);
if (m_drawingBuffer && layerRenderer())
layerRenderer()->removeChildContext(m_drawingBuffer->graphicsContext3D().get());
}
void WebGLLayerChromium::updateCompositorResources()
{
if (!m_context)
return;
if (!m_contentsDirty)
return;
GraphicsContext3D* rendererContext = layerRendererContext();
if (m_textureChanged) {
rendererContext->bindTexture(GraphicsContext3D::TEXTURE_2D, m_textureId);
// Set the min-mag filters to linear and wrap modes to GL_CLAMP_TO_EDGE
// to get around NPOT texture limitations of GLES.
rendererContext->texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_MIN_FILTER, GraphicsContext3D::LINEAR);
rendererContext->texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_MAG_FILTER, GraphicsContext3D::LINEAR);
rendererContext->texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_WRAP_S, GraphicsContext3D::CLAMP_TO_EDGE);
rendererContext->texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_WRAP_T, GraphicsContext3D::CLAMP_TO_EDGE);
m_textureChanged = false;
}
// Update the contents of the texture used by the compositor.
if (m_contentsDirty && m_textureUpdated) {
// prepareTexture copies the contents of the off-screen render target into the texture
// used by the compositor.
//
m_context->prepareTexture();
m_context->markLayerComposited();
m_contentsDirty = false;
m_textureUpdated = false;
}
}
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 VideoLayerChromium::cleanupResources()
{
LayerChromium::cleanupResources();
releaseCurrentFrame();
if (!layerRenderer())
return;
GraphicsContext3D* context = layerRendererContext();
for (unsigned plane = 0; plane < VideoFrameChromium::maxPlanes; plane++) {
if (m_textures[plane])
GLC(context, context->deleteTexture(m_textures[plane]));
}
}
void ContentLayerChromium::draw()
{
if (m_skipsDraw)
return;
ASSERT(layerRenderer());
const ContentLayerChromium::SharedValues* sv = layerRenderer()->contentLayerSharedValues();
ASSERT(sv && sv->initialized());
GraphicsContext3D* context = layerRendererContext();
GLC(context, context->activeTexture(GraphicsContext3D::TEXTURE0));
GLC(context, context->bindTexture(GraphicsContext3D::TEXTURE_2D, m_contentsTexture));
layerRenderer()->useShader(sv->contentShaderProgram());
GLC(context, context->uniform1i(sv->shaderSamplerLocation(), 0));
drawTexturedQuad(context, layerRenderer()->projectionMatrix(), drawTransform(),
bounds().width(), bounds().height(), drawOpacity(),
sv->shaderMatrixLocation(), sv->shaderAlphaLocation());
}
void VideoLayerChromium::drawRGBA(const SharedValues* sv)
{
GraphicsContext3D* context = layerRendererContext();
GLC(context, context->activeTexture(GraphicsContext3D::TEXTURE0));
GLC(context, context->bindTexture(GraphicsContext3D::TEXTURE_2D, m_textures[VideoFrameChromium::rgbPlane]));
layerRenderer()->useShader(sv->rgbaShaderProgram());
unsigned frameWidth = m_frameSizes[VideoFrameChromium::rgbPlane].width();
unsigned textureWidth = m_textureSizes[VideoFrameChromium::rgbPlane].width();
float widthScaleFactor = static_cast<float>(frameWidth) / textureWidth;
GLC(context, context->uniform1f(sv->rgbaWidthScaleFactorLocation(), widthScaleFactor));
GLC(context, context->uniform1i(sv->rgbaTextureLocation(), 0));
drawTexturedQuad(context, layerRenderer()->projectionMatrix(), drawTransform(),
bounds().width(), bounds().height(), drawOpacity(),
sv->rgbaShaderMatrixLocation(), sv->rgbaAlphaLocation());
}
void ContentLayerChromium::updateTextureRect(void* pixels, const IntSize& bitmapSize,
const IntSize& requiredTextureSize, const IntRect& updateRect, unsigned textureId, MipmapUse requestMipmap)
{
if (!pixels)
return;
GraphicsContext3D* context = layerRendererContext();
context->bindTexture(GraphicsContext3D::TEXTURE_2D, textureId);
bool generateMipmap = (requestMipmap == useMipmap)
&& (layerRenderer()->contentLayerSharedValues()->npotSupported()
|| (isPowerOfTwo(updateRect.width()) && isPowerOfTwo(updateRect.height())));
// If the texture id or size changed since last time then we need to tell GL
// to re-allocate a texture.
if (m_contentsTexture != textureId || requiredTextureSize != m_allocatedTextureSize) {
ASSERT(bitmapSize == requiredTextureSize);
GLC(context, context->texImage2D(GraphicsContext3D::TEXTURE_2D, 0, GraphicsContext3D::RGBA, requiredTextureSize.width(), requiredTextureSize.height(), 0, GraphicsContext3D::RGBA, GraphicsContext3D::UNSIGNED_BYTE, pixels));
if (generateMipmap) {
GLC(context, context->texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_MIN_FILTER,
GraphicsContext3D::LINEAR_MIPMAP_LINEAR));
GLC(context, context->texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_MAG_FILTER,
GraphicsContext3D::LINEAR));
} else {
GLC(context, context->texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_MIN_FILTER,
GraphicsContext3D::LINEAR));
GLC(context, context->texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_MAG_FILTER,
GraphicsContext3D::LINEAR));
}
m_contentsTexture = textureId;
m_allocatedTextureSize = requiredTextureSize;
} else {
ASSERT(updateRect.width() <= m_allocatedTextureSize.width() && updateRect.height() <= m_allocatedTextureSize.height());
ASSERT(updateRect.width() == bitmapSize.width() && updateRect.height() == bitmapSize.height());
GLC(context, context->texSubImage2D(GraphicsContext3D::TEXTURE_2D, 0, updateRect.x(), updateRect.y(), updateRect.width(), updateRect.height(), GraphicsContext3D::RGBA, GraphicsContext3D::UNSIGNED_BYTE, pixels));
}
if (generateMipmap)
GLC(context, context->generateMipmap(GraphicsContext3D::TEXTURE_2D));
m_dirtyRect.setSize(FloatSize());
m_contentsDirty = false;
}
bool WebGLLayerChromium::paintRenderedResultsToCanvas(ImageBuffer* imageBuffer)
{
if (m_textureUpdated || !layerRendererContext() || !drawsContent())
return false;
IntSize framebufferSize = context()->getInternalFramebufferSize();
ASSERT(layerRendererContext());
// This would ideally be done in the webgl context, but that isn't possible yet.
Platform3DObject framebuffer = layerRendererContext()->createFramebuffer();
layerRendererContext()->bindFramebuffer(GraphicsContext3D::FRAMEBUFFER, framebuffer);
layerRendererContext()->framebufferTexture2D(GraphicsContext3D::FRAMEBUFFER, GraphicsContext3D::COLOR_ATTACHMENT0, GraphicsContext3D::TEXTURE_2D, m_textureId, 0);
Extensions3DChromium* extensions = static_cast<Extensions3DChromium*>(layerRendererContext()->getExtensions());
extensions->paintFramebufferToCanvas(framebuffer, framebufferSize.width(), framebufferSize.height(), !context()->getContextAttributes().premultipliedAlpha, imageBuffer);
layerRendererContext()->deleteFramebuffer(framebuffer);
return true;
}