void WebMediaPlayerClientImpl::paintOnAndroid(WebCore::GraphicsContext* context, const IntRect& rect, uint8_t alpha)
{
OwnPtr<blink::WebGraphicsContext3DProvider> provider = adoptPtr(blink::Platform::current()->createSharedOffscreenGraphicsContext3DProvider());
if (!provider)
return;
WebGraphicsContext3D* context3D = provider->context3d();
if (!context || !context3D || !m_webMediaPlayer || context->paintingDisabled())
return;
if (!context3D->makeContextCurrent())
return;
// Copy video texture into a RGBA texture based bitmap first as video texture on Android is GL_TEXTURE_EXTERNAL_OES
// which is not supported by Skia yet. The bitmap's size needs to be the same as the video and use naturalSize() here.
// Check if we could reuse existing texture based bitmap.
// Otherwise, release existing texture based bitmap and allocate a new one based on video size.
if (!ensureTextureBackedSkBitmap(provider->grContext(), m_bitmap, m_webMediaPlayer->naturalSize(), kTopLeft_GrSurfaceOrigin, kSkia8888_GrPixelConfig))
return;
// Copy video texture to bitmap texture.
WebCanvas* canvas = context->canvas();
unsigned textureId = static_cast<unsigned>((m_bitmap.getTexture())->getTextureHandle());
if (!m_webMediaPlayer->copyVideoTextureToPlatformTexture(context3D, textureId, 0, GL_RGBA, GL_UNSIGNED_BYTE, true, false))
return;
// Draw the texture based bitmap onto the Canvas. If the canvas is hardware based, this will do a GPU-GPU texture copy. If the canvas is software based,
// the texture based bitmap will be readbacked to system memory then draw onto the canvas.
SkRect dest;
dest.set(rect.x(), rect.y(), rect.x() + rect.width(), rect.y() + rect.height());
SkPaint paint;
paint.setAlpha(alpha);
// It is not necessary to pass the dest into the drawBitmap call since all the context have been set up before calling paintCurrentFrameInContext.
canvas->drawBitmapRect(m_bitmap, NULL, dest, &paint);
}
WebGLImageBufferSurface::WebGLImageBufferSurface(const IntSize& size, OpacityMode opacityMode)
: ImageBufferSurface(size, opacityMode)
{
m_contextProvider = adoptPtr(Platform::current()->createSharedOffscreenGraphicsContext3DProvider());
if (!m_contextProvider)
return;
GrContext* gr = m_contextProvider->grContext();
if (!gr)
return;
ensureTextureBackedSkBitmap(gr, m_bitmap, size, kDefault_GrSurfaceOrigin, kRGBA_8888_GrPixelConfig);
}
