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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/CopyableCanvasLayer.cpp
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'gfx/layers/CopyableCanvasLayer.cpp')
-rw-r--r--gfx/layers/CopyableCanvasLayer.cpp102
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diff --git a/gfx/layers/CopyableCanvasLayer.cpp b/gfx/layers/CopyableCanvasLayer.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 "CopyableCanvasLayer.h"
+
+#include "BasicLayersImpl.h" // for FillWithMask, etc
+#include "GLContext.h" // for GLContext
+#include "GLScreenBuffer.h" // for GLScreenBuffer
+#include "SharedSurface.h" // for SharedSurface
+#include "SharedSurfaceGL.h" // for SharedSurface
+#include "gfxPattern.h" // for gfxPattern, etc
+#include "gfxPlatform.h" // for gfxPlatform, gfxImageFormat
+#include "gfxRect.h" // for gfxRect
+#include "gfxUtils.h" // for gfxUtils
+#include "gfx2DGlue.h" // for thebes --> moz2d transition
+#include "mozilla/gfx/BaseSize.h" // for BaseSize
+#include "mozilla/gfx/Tools.h"
+#include "mozilla/gfx/Point.h" // for IntSize
+#include "mozilla/layers/AsyncCanvasRenderer.h"
+#include "mozilla/layers/PersistentBufferProvider.h"
+#include "nsDebug.h" // for NS_ASSERTION, NS_WARNING, etc
+#include "nsISupportsImpl.h" // for gfxContext::AddRef, etc
+#include "nsRect.h" // for mozilla::gfx::IntRect
+#include "gfxUtils.h"
+#include "client/TextureClientSharedSurface.h"
+
+namespace mozilla {
+namespace layers {
+
+using namespace mozilla::gfx;
+using namespace mozilla::gl;
+
+CopyableCanvasLayer::CopyableCanvasLayer(LayerManager* aLayerManager, void *aImplData) :
+ CanvasLayer(aLayerManager, aImplData)
+ , mGLFrontbuffer(nullptr)
+ , mIsAlphaPremultiplied(true)
+ , mOriginPos(gl::OriginPos::TopLeft)
+ , mIsMirror(false)
+{
+ MOZ_COUNT_CTOR(CopyableCanvasLayer);
+}
+
+CopyableCanvasLayer::~CopyableCanvasLayer()
+{
+ MOZ_COUNT_DTOR(CopyableCanvasLayer);
+}
+
+void
+CopyableCanvasLayer::Initialize(const Data& aData)
+{
+ if (aData.mGLContext) {
+ mGLContext = aData.mGLContext;
+ mIsAlphaPremultiplied = aData.mIsGLAlphaPremult;
+ mOriginPos = gl::OriginPos::BottomLeft;
+ mIsMirror = aData.mIsMirror;
+
+ MOZ_ASSERT(mGLContext->IsOffscreen(), "canvas gl context isn't offscreen");
+
+ if (aData.mFrontbufferGLTex) {
+ gfx::IntSize size(aData.mSize.width, aData.mSize.height);
+ mGLFrontbuffer = SharedSurface_Basic::Wrap(aData.mGLContext, size, aData.mHasAlpha,
+ aData.mFrontbufferGLTex);
+ mBufferProvider = aData.mBufferProvider;
+ }
+ } else if (aData.mBufferProvider) {
+ mBufferProvider = aData.mBufferProvider;
+ } else if (aData.mRenderer) {
+ mAsyncRenderer = aData.mRenderer;
+ mOriginPos = gl::OriginPos::BottomLeft;
+ } else {
+ MOZ_CRASH("GFX: CanvasLayer created without BufferProvider, DrawTarget or GLContext?");
+ }
+
+ mBounds.SetRect(0, 0, aData.mSize.width, aData.mSize.height);
+}
+
+bool
+CopyableCanvasLayer::IsDataValid(const Data& aData)
+{
+ return mGLContext == aData.mGLContext;
+}
+
+DataSourceSurface*
+CopyableCanvasLayer::GetTempSurface(const IntSize& aSize,
+ const SurfaceFormat aFormat)
+{
+ if (!mCachedTempSurface ||
+ aSize != mCachedTempSurface->GetSize() ||
+ aFormat != mCachedTempSurface->GetFormat())
+ {
+ // Create a surface aligned to 8 bytes since that's the highest alignment WebGL can handle.
+ uint32_t stride = GetAlignedStride<8>(aSize.width, BytesPerPixel(aFormat));
+ mCachedTempSurface = Factory::CreateDataSourceSurfaceWithStride(aSize, aFormat, stride);
+ }
+
+ return mCachedTempSurface;
+}
+
+} // namespace layers
+} // namespace mozilla