265 lines
7.5 KiB
C++
265 lines
7.5 KiB
C++
/* -*- Mode: C++; tab-width: 2; 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 "ClientCanvasLayer.h"
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#include "GLContext.h" // for GLContext
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#include "GLScreenBuffer.h" // for GLScreenBuffer
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#include "GeckoProfiler.h" // for PROFILER_LABEL
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#include "SharedSurfaceEGL.h" // for SurfaceFactory_EGLImage
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#include "SharedSurfaceGL.h" // for SurfaceFactory_GLTexture, etc
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#include "ClientLayerManager.h" // for ClientLayerManager, etc
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#include "mozilla/gfx/Point.h" // for IntSize
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#include "mozilla/layers/AsyncCanvasRenderer.h"
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#include "mozilla/layers/CompositorTypes.h"
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#include "mozilla/layers/LayersTypes.h"
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#include "nsCOMPtr.h" // for already_AddRefed
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#include "nsISupportsImpl.h" // for Layer::AddRef, etc
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#include "nsRect.h" // for mozilla::gfx::IntRect
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#include "nsXULAppAPI.h" // for XRE_GetProcessType, etc
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#include "gfxPrefs.h" // for WebGLForceLayersReadback
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#include "gfxUtils.h"
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#include "TextureClientSharedSurface.h"
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using namespace mozilla::gfx;
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using namespace mozilla::gl;
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namespace mozilla {
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namespace layers {
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ClientCanvasLayer::~ClientCanvasLayer()
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{
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MOZ_COUNT_DTOR(ClientCanvasLayer);
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if (mCanvasClient) {
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mCanvasClient->OnDetach();
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mCanvasClient = nullptr;
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}
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}
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void
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ClientCanvasLayer::Initialize(const Data& aData)
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{
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CopyableCanvasLayer::Initialize(aData);
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mCanvasClient = nullptr;
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if (!mGLContext)
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return;
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GLScreenBuffer* screen = mGLContext->Screen();
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SurfaceCaps caps;
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if (mGLFrontbuffer) {
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// The screen caps are irrelevant if we're using a separate frontbuffer.
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caps = mGLFrontbuffer->mHasAlpha ? SurfaceCaps::ForRGBA()
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: SurfaceCaps::ForRGB();
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} else {
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MOZ_ASSERT(screen);
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caps = screen->mCaps;
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}
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MOZ_ASSERT(caps.alpha == aData.mHasAlpha);
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auto forwarder = ClientManager()->AsShadowForwarder();
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mFlags = TextureFlags::ORIGIN_BOTTOM_LEFT;
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if (!aData.mIsGLAlphaPremult) {
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mFlags |= TextureFlags::NON_PREMULTIPLIED;
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}
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UniquePtr<SurfaceFactory> factory = GLScreenBuffer::CreateFactory(mGLContext, caps, forwarder, mFlags);
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if (mGLFrontbuffer || aData.mIsMirror) {
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// We're using a source other than the one in the default screen.
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// (SkiaGL)
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mFactory = Move(factory);
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if (!mFactory) {
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// Absolutely must have a factory here, so create a basic one
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mFactory = MakeUnique<SurfaceFactory_Basic>(mGLContext, caps, mFlags);
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}
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} else {
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if (factory)
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screen->Morph(Move(factory));
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}
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}
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void
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ClientCanvasLayer::RenderLayer()
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{
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PROFILER_LABEL("ClientCanvasLayer", "RenderLayer",
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js::ProfileEntry::Category::GRAPHICS);
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RenderMaskLayers(this);
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if (!mCanvasClient) {
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TextureFlags flags = TextureFlags::DEFAULT;
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if (mOriginPos == gl::OriginPos::BottomLeft) {
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flags |= TextureFlags::ORIGIN_BOTTOM_LEFT;
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}
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if (!mIsAlphaPremultiplied) {
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flags |= TextureFlags::NON_PREMULTIPLIED;
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}
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mCanvasClient = CanvasClient::CreateCanvasClient(GetCanvasClientType(),
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ClientManager()->AsShadowForwarder(),
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flags);
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if (!mCanvasClient) {
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return;
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}
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if (HasShadow()) {
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if (mAsyncRenderer) {
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static_cast<CanvasClientBridge*>(mCanvasClient.get())->SetLayer(this);
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} else {
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mCanvasClient->Connect();
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ClientManager()->AsShadowForwarder()->Attach(mCanvasClient, this);
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}
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}
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}
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if (mCanvasClient && mAsyncRenderer) {
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mCanvasClient->UpdateAsync(mAsyncRenderer);
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}
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if (!IsDirty()) {
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return;
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}
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Painted();
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FirePreTransactionCallback();
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if (mBufferProvider && mBufferProvider->GetTextureClient()) {
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if (!mBufferProvider->SetForwarder(ClientManager()->AsShadowForwarder())) {
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gfxCriticalNote << "BufferProvider::SetForwarder failed";
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return;
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}
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mCanvasClient->UpdateFromTexture(mBufferProvider->GetTextureClient());
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} else {
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mCanvasClient->Update(gfx::IntSize(mBounds.width, mBounds.height), this);
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}
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FireDidTransactionCallback();
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ClientManager()->Hold(this);
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mCanvasClient->Updated();
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}
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bool
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ClientCanvasLayer::UpdateTarget(DrawTarget* aDestTarget)
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{
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MOZ_ASSERT(aDestTarget);
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if (!aDestTarget) {
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return false;
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}
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RefPtr<SourceSurface> surface;
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if (!mGLContext) {
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AutoReturnSnapshot autoReturn;
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if (mAsyncRenderer) {
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surface = mAsyncRenderer->GetSurface();
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} else if (mBufferProvider) {
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surface = mBufferProvider->BorrowSnapshot();
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autoReturn.mSnapshot = &surface;
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autoReturn.mBufferProvider = mBufferProvider;
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}
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MOZ_ASSERT(surface);
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if (!surface) {
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return false;
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}
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aDestTarget->CopySurface(surface,
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IntRect(0, 0, mBounds.width, mBounds.height),
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IntPoint(0, 0));
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return true;
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}
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SharedSurface* frontbuffer = nullptr;
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if (mGLFrontbuffer) {
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frontbuffer = mGLFrontbuffer.get();
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} else {
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GLScreenBuffer* screen = mGLContext->Screen();
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const auto& front = screen->Front();
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if (front) {
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frontbuffer = front->Surf();
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}
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}
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if (!frontbuffer) {
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NS_WARNING("Null frame received.");
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return false;
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}
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IntSize readSize(frontbuffer->mSize);
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SurfaceFormat format = (GetContentFlags() & CONTENT_OPAQUE)
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? SurfaceFormat::B8G8R8X8
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: SurfaceFormat::B8G8R8A8;
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bool needsPremult = frontbuffer->mHasAlpha && !mIsAlphaPremultiplied;
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// Try to read back directly into aDestTarget's output buffer
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uint8_t* destData;
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IntSize destSize;
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int32_t destStride;
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SurfaceFormat destFormat;
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if (aDestTarget->LockBits(&destData, &destSize, &destStride, &destFormat)) {
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if (destSize == readSize && destFormat == format) {
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RefPtr<DataSourceSurface> data =
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Factory::CreateWrappingDataSourceSurface(destData, destStride, destSize, destFormat);
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mGLContext->Readback(frontbuffer, data);
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if (needsPremult) {
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gfxUtils::PremultiplyDataSurface(data, data);
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}
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aDestTarget->ReleaseBits(destData);
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return true;
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}
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aDestTarget->ReleaseBits(destData);
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}
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RefPtr<DataSourceSurface> resultSurf = GetTempSurface(readSize, format);
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// There will already be a warning from inside of GetTempSurface, but
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// it doesn't hurt to complain:
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if (NS_WARN_IF(!resultSurf)) {
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return false;
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}
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// Readback handles Flush/MarkDirty.
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mGLContext->Readback(frontbuffer, resultSurf);
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if (needsPremult) {
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gfxUtils::PremultiplyDataSurface(resultSurf, resultSurf);
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}
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aDestTarget->CopySurface(resultSurf,
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IntRect(0, 0, readSize.width, readSize.height),
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IntPoint(0, 0));
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return true;
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}
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CanvasClient::CanvasClientType
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ClientCanvasLayer::GetCanvasClientType()
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{
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if (mAsyncRenderer) {
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return CanvasClient::CanvasClientAsync;
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}
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if (mGLContext) {
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return CanvasClient::CanvasClientTypeShSurf;
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}
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return CanvasClient::CanvasClientSurface;
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}
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already_AddRefed<CanvasLayer>
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ClientLayerManager::CreateCanvasLayer()
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{
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NS_ASSERTION(InConstruction(), "Only allowed in construction phase");
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RefPtr<ClientCanvasLayer> layer =
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new ClientCanvasLayer(this);
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CREATE_SHADOW(Canvas);
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return layer.forget();
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}
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} // namespace layers
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} // namespace mozilla
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