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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 "CanvasRenderer.h"
#include "BuildConstants.h"
#include "ipc/KnowsCompositor.h"
#include "mozilla/gfx/gfxVars.h"
#include "mozilla/StaticPrefs_webgl.h"
#include "nsICanvasRenderingContextInternal.h"
#include "PersistentBufferProvider.h"
#include "WebGLTypes.h"
#ifdef MOZ_WAYLAND
# include "mozilla/widget/DMABufSurface.h"
#endif
namespace mozilla {
namespace layers {
CanvasRendererData::CanvasRendererData() = default;
CanvasRendererData::~CanvasRendererData() = default;
// -
BorrowedSourceSurface::BorrowedSourceSurface(
PersistentBufferProvider* const returnTo,
const RefPtr<gfx::SourceSurface> surf)
: mReturnTo(returnTo), mSurf(surf) {}
BorrowedSourceSurface::~BorrowedSourceSurface() {
if (mReturnTo) {
auto forgettable = mSurf;
mReturnTo->ReturnSnapshot(forgettable.forget());
}
}
// -
CanvasRenderer::CanvasRenderer() { MOZ_COUNT_CTOR(CanvasRenderer); }
CanvasRenderer::~CanvasRenderer() { MOZ_COUNT_DTOR(CanvasRenderer); }
void CanvasRenderer::Initialize(const CanvasRendererData& aData) {
mData = aData;
}
bool CanvasRenderer::IsDataValid(const CanvasRendererData& aData) const {
return mData.GetContext() == aData.GetContext();
}
std::shared_ptr<BorrowedSourceSurface> CanvasRenderer::BorrowSnapshot(
const bool requireAlphaPremult) const {
const auto context = mData.GetContext();
if (!context) return nullptr;
RefPtr<PersistentBufferProvider> provider = context->GetBufferProvider();
RefPtr<gfx::SourceSurface> ss;
if (provider) {
ss = provider->BorrowSnapshot();
}
if (!ss) {
provider = nullptr;
ss = context->GetFrontBufferSnapshot(requireAlphaPremult);
}
if (!ss) return nullptr;
return std::make_shared<BorrowedSourceSurface>(provider, ss);
}
void CanvasRenderer::FirePreTransactionCallback() const {
if (!mData.mDoPaintCallbacks) return;
const auto context = mData.GetContext();
if (!context) return;
context->OnBeforePaintTransaction();
}
void CanvasRenderer::FireDidTransactionCallback() const {
if (!mData.mDoPaintCallbacks) return;
const auto context = mData.GetContext();
if (!context) return;
context->OnDidPaintTransaction();
}
TextureType TexTypeForWebgl(KnowsCompositor* const knowsCompositor) {
if (!knowsCompositor) return TextureType::Unknown;
const auto layersBackend = knowsCompositor->GetCompositorBackendType();
switch (layersBackend) {
case LayersBackend::LAYERS_LAST:
MOZ_CRASH("Unexpected LayersBackend::LAYERS_LAST");
case LayersBackend::LAYERS_NONE:
return TextureType::Unknown;
case LayersBackend::LAYERS_WR:
break;
}
if (kIsWindows) {
if (knowsCompositor->SupportsD3D11()) {
return TextureType::D3D11;
}
}
if (kIsMacOS) {
return TextureType::MacIOSurface;
}
#ifdef MOZ_WAYLAND
if (kIsWayland) {
if (!knowsCompositor->UsingSoftwareWebRender() &&
widget::GetDMABufDevice()->IsDMABufWebGLEnabled()) {
return TextureType::DMABUF;
}
}
#endif
if (kIsAndroid) {
if (gfx::gfxVars::UseAHardwareBufferSharedSurface()) {
return TextureType::AndroidHardwareBuffer;
}
if (StaticPrefs::webgl_enable_surface_texture()) {
return TextureType::AndroidNativeWindow;
}
}
return TextureType::Unknown;
}
} // namespace layers
} // namespace mozilla
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