зеркало из https://github.com/mozilla/gecko-dev.git
88 строки
2.4 KiB
C++
88 строки
2.4 KiB
C++
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/* -*- Mode: C++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 8 -*- */
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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 "nsDebug.h"
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#include "D3D11SurfaceHolder.h"
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#include "gfxWindowsPlatform.h"
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#include "mozilla/gfx/2D.h"
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#include "mozilla/layers/TextureD3D11.h"
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#include <d3d11.h>
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namespace mozilla {
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namespace plugins {
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using namespace mozilla::gfx;
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using namespace mozilla::layers;
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D3D11SurfaceHolder::D3D11SurfaceHolder(ID3D11Texture2D* back,
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SurfaceFormat format,
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const IntSize& size)
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: mDevice11(gfxWindowsPlatform::GetPlatform()->GetD3D11ContentDevice()),
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mBack(back),
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mFormat(format),
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mSize(size)
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{
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}
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D3D11SurfaceHolder::~D3D11SurfaceHolder()
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{
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}
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bool
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D3D11SurfaceHolder::IsValid()
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{
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// If a TDR occurred, platform devices will be recreated.
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if (gfxWindowsPlatform::GetPlatform()->GetD3D11ContentDevice() != mDevice11) {
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return false;
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}
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return true;
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}
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bool
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D3D11SurfaceHolder::CopyToTextureClient(TextureClient* aClient)
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{
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MOZ_ASSERT(NS_IsMainThread());
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D3D11TextureData* data = aClient->GetInternalData()->AsD3D11TextureData();
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if (!data) {
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// We don't support this yet. We expect to have a D3D11 compositor, and
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// therefore D3D11 surfaces.
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NS_WARNING("Plugin DXGI surface has unsupported TextureClient");
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return false;
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}
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RefPtr<ID3D11DeviceContext> context;
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mDevice11->GetImmediateContext(getter_AddRefs(context));
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if (!context) {
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NS_WARNING("Could not get an immediate D3D11 context");
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return false;
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}
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TextureClientAutoLock autoLock(aClient, OpenMode::OPEN_WRITE_ONLY);
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if (!autoLock.Succeeded()) {
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return false;
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}
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RefPtr<IDXGIKeyedMutex> mutex;
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HRESULT hr = mBack->QueryInterface(__uuidof(IDXGIKeyedMutex), (void **)getter_AddRefs(mutex));
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if (FAILED(hr) || !mutex) {
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NS_WARNING("Could not acquire an IDXGIKeyedMutex");
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return false;
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}
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hr = mutex->AcquireSync(0, 0);
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if (hr == WAIT_ABANDONED || hr == WAIT_TIMEOUT || FAILED(hr)) {
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NS_WARNING("Could not acquire DXGI surface lock - plugin forgot to release?");
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return false;
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}
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context->CopyResource(data->GetD3D11Texture(), mBack);
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mutex->ReleaseSync(0);
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return true;
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}
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} // namespace plugins
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} // namespace mozilla
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