void
SharedSurface_Basic::Fence()
{
mGL->MakeCurrent();
ScopedBindFramebuffer autoFB(mGL, mFB);
ReadPixelsIntoDataSurface(mGL, mData);
}
already_AddRefed<gfx::SourceSurface>
GLImage::GetAsSourceSurface()
{
MOZ_ASSERT(NS_IsMainThread(), "Should be on the main thread");
if (!sSnapshotContext) {
nsCString discardFailureId;
sSnapshotContext = GLContextProvider::CreateHeadless(CreateContextFlags::NONE,
&discardFailureId);
if (!sSnapshotContext) {
NS_WARNING("Failed to create snapshot GLContext");
return nullptr;
}
}
sSnapshotContext->MakeCurrent();
ScopedTexture scopedTex(sSnapshotContext);
ScopedBindTexture boundTex(sSnapshotContext, scopedTex.Texture());
gfx::IntSize size = GetSize();
sSnapshotContext->fTexImage2D(LOCAL_GL_TEXTURE_2D, 0, LOCAL_GL_RGBA,
size.width, size.height, 0,
LOCAL_GL_RGBA,
LOCAL_GL_UNSIGNED_BYTE,
nullptr);
ScopedFramebufferForTexture autoFBForTex(sSnapshotContext, scopedTex.Texture());
if (!autoFBForTex.IsComplete()) {
MOZ_CRASH("GFX: ScopedFramebufferForTexture failed.");
}
const gl::OriginPos destOrigin = gl::OriginPos::TopLeft;
if (!sSnapshotContext->BlitHelper()->BlitImageToFramebuffer(this, size,
autoFBForTex.FB(),
destOrigin))
{
return nullptr;
}
RefPtr<gfx::DataSourceSurface> source =
gfx::Factory::CreateDataSourceSurface(size, gfx::SurfaceFormat::B8G8R8A8);
if (NS_WARN_IF(!source)) {
return nullptr;
}
ScopedBindFramebuffer bind(sSnapshotContext, autoFBForTex.FB());
ReadPixelsIntoDataSurface(sSnapshotContext, source);
return source.forget();
}
TemporaryRef<gfx::SourceSurface>
GLImage::GetAsSourceSurface()
{
MOZ_ASSERT(NS_IsMainThread(), "Should be on the main thread");
if (!sSnapshotContext) {
sSnapshotContext = GLContextProvider::CreateHeadless(false);
if (!sSnapshotContext) {
NS_WARNING("Failed to create snapshot GLContext");
return nullptr;
}
}
sSnapshotContext->MakeCurrent();
ScopedTexture scopedTex(sSnapshotContext);
ScopedBindTexture boundTex(sSnapshotContext, scopedTex.Texture());
gfx::IntSize size = GetSize();
sSnapshotContext->fTexImage2D(LOCAL_GL_TEXTURE_2D, 0, LOCAL_GL_RGBA,
size.width, size.height, 0,
LOCAL_GL_RGBA,
LOCAL_GL_UNSIGNED_BYTE,
nullptr);
ScopedFramebufferForTexture fb(sSnapshotContext, scopedTex.Texture());
GLBlitHelper helper(sSnapshotContext);
if (!helper.BlitImageToFramebuffer(this, size, fb.FB(), true)) {
return nullptr;
}
RefPtr<gfx::DataSourceSurface> source =
gfx::Factory::CreateDataSourceSurface(size, gfx::SurfaceFormat::B8G8R8A8);
if (NS_WARN_IF(!source)) {
return nullptr;
}
ScopedBindFramebuffer bind(sSnapshotContext, fb.FB());
ReadPixelsIntoDataSurface(sSnapshotContext, source);
return source.forget();
}
