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;
}
bool WebGLLayerChromium::paintRenderedResultsToCanvas(ImageBuffer* imageBuffer)
{
if (!m_drawingBuffer || !drawsContent())
return false;
IntSize framebufferSize = context()->getInternalFramebufferSize();
// Since we're using the same context as WebGL, we have to restore any state we change (in this case, just the framebuffer binding).
// FIXME: The WebGLRenderingContext tracks the current framebuffer binding, it would be slightly more efficient to use this value
// rather than querying it off of the context.
GC3Dint previousFramebuffer = 0;
context()->getIntegerv(GraphicsContext3D::FRAMEBUFFER_BINDING, &previousFramebuffer);
Platform3DObject framebuffer = context()->createFramebuffer();
context()->bindFramebuffer(GraphicsContext3D::FRAMEBUFFER, framebuffer);
context()->framebufferTexture2D(GraphicsContext3D::FRAMEBUFFER, GraphicsContext3D::COLOR_ATTACHMENT0, GraphicsContext3D::TEXTURE_2D, m_textureId, 0);
Extensions3DChromium* extensions = static_cast<Extensions3DChromium*>(context()->getExtensions());
extensions->paintFramebufferToCanvas(framebuffer, framebufferSize.width(), framebufferSize.height(), !context()->getContextAttributes().premultipliedAlpha, imageBuffer);
context()->deleteFramebuffer(framebuffer);
context()->bindFramebuffer(GraphicsContext3D::FRAMEBUFFER, previousFramebuffer);
return true;
}
