mirror of
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99 lines
3.0 KiB
C++
99 lines
3.0 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/layers/CanvasClient.h"
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#include "mozilla/layers/TextureClient.h"
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#include "BasicCanvasLayer.h"
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#include "mozilla/layers/ShadowLayers.h"
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#include "SharedTextureImage.h"
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#include "nsXULAppAPI.h"
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#include "GLContext.h"
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#include "SurfaceStream.h"
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using namespace mozilla::gl;
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namespace mozilla {
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namespace layers {
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/* static */ TemporaryRef<CanvasClient>
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CanvasClient::CreateCanvasClient(LayersBackend aParentBackend,
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CompositableType aCompositableHostType,
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CompositableForwarder* aForwarder,
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TextureFlags aFlags)
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{
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if (aCompositableHostType == BUFFER_IMAGE_SINGLE) {
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return new CanvasClient2D(aForwarder, aFlags);
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}
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if (aCompositableHostType == BUFFER_IMAGE_BUFFERED) {
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if (aParentBackend == LAYERS_OPENGL) {
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return new CanvasClientWebGL(aForwarder, aFlags);
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}
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return new CanvasClient2D(aForwarder, aFlags);
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}
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return nullptr;
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}
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void
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CanvasClient::Updated()
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{
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mForwarder->UpdateTexture(this, 1, mTextureClient->GetDescriptor());
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}
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CanvasClient2D::CanvasClient2D(CompositableForwarder* aFwd,
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TextureFlags aFlags)
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: CanvasClient(aFwd, aFlags)
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{
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mTextureInfo.mCompositableType = BUFFER_IMAGE_SINGLE;
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}
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void
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CanvasClient2D::Update(gfx::IntSize aSize, BasicCanvasLayer* aLayer)
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{
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if (!mTextureClient) {
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mTextureClient = CreateTextureClient(TEXTURE_SHMEM);
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}
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bool isOpaque = (aLayer->GetContentFlags() & Layer::CONTENT_OPAQUE);
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gfxASurface::gfxContentType contentType = isOpaque
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? gfxASurface::CONTENT_COLOR
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: gfxASurface::CONTENT_COLOR_ALPHA;
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mTextureClient->EnsureAllocated(aSize, contentType);
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gfxASurface* surface = mTextureClient->LockSurface();
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static_cast<BasicCanvasLayer*>(aLayer)->UpdateSurface(surface, nullptr);
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mTextureClient->Unlock();
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}
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CanvasClientWebGL::CanvasClientWebGL(CompositableForwarder* aFwd,
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TextureFlags aFlags)
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: CanvasClient(aFwd, aFlags)
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{
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mTextureInfo.mCompositableType = BUFFER_IMAGE_BUFFERED;
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}
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void
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CanvasClientWebGL::Update(gfx::IntSize aSize, BasicCanvasLayer* aLayer)
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{
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if (!mTextureClient) {
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mTextureClient = CreateTextureClient(TEXTURE_STREAM_GL);
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}
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NS_ASSERTION(aLayer->mGLContext, "CanvasClientWebGL should only be used with GL canvases");
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// the content type won't be used
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mTextureClient->EnsureAllocated(aSize, gfxASurface::CONTENT_COLOR);
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GLScreenBuffer* screen = aLayer->mGLContext->Screen();
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SurfaceStreamHandle handle = screen->Stream()->GetShareHandle();
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mTextureClient->SetDescriptor(SurfaceStreamDescriptor(handle, false));
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aLayer->Painted();
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}
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}
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}
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