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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /gfx/layers/client/ClientCanvasLayer.cpp
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'gfx/layers/client/ClientCanvasLayer.cpp')
-rw-r--r--gfx/layers/client/ClientCanvasLayer.cpp261
1 files changed, 261 insertions, 0 deletions
diff --git a/gfx/layers/client/ClientCanvasLayer.cpp b/gfx/layers/client/ClientCanvasLayer.cpp
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+++ b/gfx/layers/client/ClientCanvasLayer.cpp
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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "ClientCanvasLayer.h"
+#include "GLContext.h" // for GLContext
+#include "GLScreenBuffer.h" // for GLScreenBuffer
+#include "GeckoProfiler.h" // for PROFILER_LABEL
+#include "SharedSurfaceEGL.h" // for SurfaceFactory_EGLImage
+#include "SharedSurfaceGL.h" // for SurfaceFactory_GLTexture, etc
+#include "ClientLayerManager.h" // for ClientLayerManager, etc
+#include "mozilla/gfx/Point.h" // for IntSize
+#include "mozilla/layers/AsyncCanvasRenderer.h"
+#include "mozilla/layers/CompositorTypes.h"
+#include "mozilla/layers/LayersTypes.h"
+#include "nsCOMPtr.h" // for already_AddRefed
+#include "nsISupportsImpl.h" // for Layer::AddRef, etc
+#include "nsRect.h" // for mozilla::gfx::IntRect
+#include "nsXULAppAPI.h" // for XRE_GetProcessType, etc
+#include "gfxPrefs.h" // for WebGLForceLayersReadback
+
+using namespace mozilla::gfx;
+using namespace mozilla::gl;
+
+namespace mozilla {
+namespace layers {
+
+ClientCanvasLayer::~ClientCanvasLayer()
+{
+ MOZ_COUNT_DTOR(ClientCanvasLayer);
+ if (mCanvasClient) {
+ mCanvasClient->OnDetach();
+ mCanvasClient = nullptr;
+ }
+}
+
+void
+ClientCanvasLayer::Initialize(const Data& aData)
+{
+ CopyableCanvasLayer::Initialize(aData);
+
+ mCanvasClient = nullptr;
+
+ if (!mGLContext)
+ return;
+
+ GLScreenBuffer* screen = mGLContext->Screen();
+
+ SurfaceCaps caps;
+ if (mGLFrontbuffer) {
+ // The screen caps are irrelevant if we're using a separate frontbuffer.
+ caps = mGLFrontbuffer->mHasAlpha ? SurfaceCaps::ForRGBA()
+ : SurfaceCaps::ForRGB();
+ } else {
+ MOZ_ASSERT(screen);
+ caps = screen->mCaps;
+ }
+ MOZ_ASSERT(caps.alpha == aData.mHasAlpha);
+
+ auto forwarder = ClientManager()->AsShadowForwarder();
+
+ mFlags = TextureFlags::ORIGIN_BOTTOM_LEFT;
+ if (!aData.mIsGLAlphaPremult) {
+ mFlags |= TextureFlags::NON_PREMULTIPLIED;
+ }
+
+ UniquePtr<SurfaceFactory> factory = GLScreenBuffer::CreateFactory(mGLContext, caps, forwarder, mFlags);
+
+ if (mGLFrontbuffer || aData.mIsMirror) {
+ // We're using a source other than the one in the default screen.
+ // (SkiaGL)
+ mFactory = Move(factory);
+ if (!mFactory) {
+ // Absolutely must have a factory here, so create a basic one
+ mFactory = MakeUnique<SurfaceFactory_Basic>(mGLContext, caps, mFlags);
+ }
+ } else {
+ if (factory)
+ screen->Morph(Move(factory));
+ }
+}
+
+void
+ClientCanvasLayer::RenderLayer()
+{
+ PROFILER_LABEL("ClientCanvasLayer", "RenderLayer",
+ js::ProfileEntry::Category::GRAPHICS);
+
+ RenderMaskLayers(this);
+
+ if (!mCanvasClient) {
+ TextureFlags flags = TextureFlags::DEFAULT;
+ if (mOriginPos == gl::OriginPos::BottomLeft) {
+ flags |= TextureFlags::ORIGIN_BOTTOM_LEFT;
+ }
+
+ if (!mIsAlphaPremultiplied) {
+ flags |= TextureFlags::NON_PREMULTIPLIED;
+ }
+
+ mCanvasClient = CanvasClient::CreateCanvasClient(GetCanvasClientType(),
+ ClientManager()->AsShadowForwarder(),
+ flags);
+ if (!mCanvasClient) {
+ return;
+ }
+ if (HasShadow()) {
+ if (mAsyncRenderer) {
+ static_cast<CanvasClientBridge*>(mCanvasClient.get())->SetLayer(this);
+ } else {
+ mCanvasClient->Connect();
+ ClientManager()->AsShadowForwarder()->Attach(mCanvasClient, this);
+ }
+ }
+ }
+
+ if (mCanvasClient && mAsyncRenderer) {
+ mCanvasClient->UpdateAsync(mAsyncRenderer);
+ }
+
+ if (!IsDirty()) {
+ return;
+ }
+ Painted();
+
+ FirePreTransactionCallback();
+ if (mBufferProvider && mBufferProvider->GetTextureClient()) {
+ if (!mBufferProvider->SetForwarder(ClientManager()->AsShadowForwarder())) {
+ gfxCriticalNote << "BufferProvider::SetForwarder failed";
+ return;
+ }
+ mCanvasClient->UpdateFromTexture(mBufferProvider->GetTextureClient());
+ } else {
+ mCanvasClient->Update(gfx::IntSize(mBounds.width, mBounds.height), this);
+ }
+
+ FireDidTransactionCallback();
+
+ ClientManager()->Hold(this);
+ mCanvasClient->Updated();
+}
+
+bool
+ClientCanvasLayer::UpdateTarget(DrawTarget* aDestTarget)
+{
+ MOZ_ASSERT(aDestTarget);
+ if (!aDestTarget) {
+ return false;
+ }
+
+ RefPtr<SourceSurface> surface;
+
+ if (!mGLContext) {
+ AutoReturnSnapshot autoReturn;
+
+ if (mAsyncRenderer) {
+ surface = mAsyncRenderer->GetSurface();
+ } else if (mBufferProvider) {
+ surface = mBufferProvider->BorrowSnapshot();
+ autoReturn.mSnapshot = &surface;
+ autoReturn.mBufferProvider = mBufferProvider;
+ }
+
+ MOZ_ASSERT(surface);
+ if (!surface) {
+ return false;
+ }
+
+ aDestTarget->CopySurface(surface,
+ IntRect(0, 0, mBounds.width, mBounds.height),
+ IntPoint(0, 0));
+ return true;
+ }
+
+ SharedSurface* frontbuffer = nullptr;
+ if (mGLFrontbuffer) {
+ frontbuffer = mGLFrontbuffer.get();
+ } else {
+ GLScreenBuffer* screen = mGLContext->Screen();
+ const auto& front = screen->Front();
+ if (front) {
+ frontbuffer = front->Surf();
+ }
+ }
+
+ if (!frontbuffer) {
+ NS_WARNING("Null frame received.");
+ return false;
+ }
+
+ IntSize readSize(frontbuffer->mSize);
+ SurfaceFormat format = (GetContentFlags() & CONTENT_OPAQUE)
+ ? SurfaceFormat::B8G8R8X8
+ : SurfaceFormat::B8G8R8A8;
+ bool needsPremult = frontbuffer->mHasAlpha && !mIsAlphaPremultiplied;
+
+ // Try to read back directly into aDestTarget's output buffer
+ uint8_t* destData;
+ IntSize destSize;
+ int32_t destStride;
+ SurfaceFormat destFormat;
+ if (aDestTarget->LockBits(&destData, &destSize, &destStride, &destFormat)) {
+ if (destSize == readSize && destFormat == format) {
+ RefPtr<DataSourceSurface> data =
+ Factory::CreateWrappingDataSourceSurface(destData, destStride, destSize, destFormat);
+ mGLContext->Readback(frontbuffer, data);
+ if (needsPremult) {
+ gfxUtils::PremultiplyDataSurface(data, data);
+ }
+ aDestTarget->ReleaseBits(destData);
+ return true;
+ }
+ aDestTarget->ReleaseBits(destData);
+ }
+
+ RefPtr<DataSourceSurface> resultSurf = GetTempSurface(readSize, format);
+ // There will already be a warning from inside of GetTempSurface, but
+ // it doesn't hurt to complain:
+ if (NS_WARN_IF(!resultSurf)) {
+ return false;
+ }
+
+ // Readback handles Flush/MarkDirty.
+ mGLContext->Readback(frontbuffer, resultSurf);
+ if (needsPremult) {
+ gfxUtils::PremultiplyDataSurface(resultSurf, resultSurf);
+ }
+
+ aDestTarget->CopySurface(resultSurf,
+ IntRect(0, 0, readSize.width, readSize.height),
+ IntPoint(0, 0));
+
+ return true;
+}
+
+CanvasClient::CanvasClientType
+ClientCanvasLayer::GetCanvasClientType()
+{
+ if (mAsyncRenderer) {
+ return CanvasClient::CanvasClientAsync;
+ }
+
+ if (mGLContext) {
+ return CanvasClient::CanvasClientTypeShSurf;
+ }
+ return CanvasClient::CanvasClientSurface;
+}
+
+already_AddRefed<CanvasLayer>
+ClientLayerManager::CreateCanvasLayer()
+{
+ NS_ASSERTION(InConstruction(), "Only allowed in construction phase");
+ RefPtr<ClientCanvasLayer> layer =
+ new ClientCanvasLayer(this);
+ CREATE_SHADOW(Canvas);
+ return layer.forget();
+}
+
+} // namespace layers
+} // namespace mozilla