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/* -*- Mode: C++; tab-width: 20; 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 "WMF.h"
#include "D3D11ShareHandleImage.h"
#include "gfxImageSurface.h"
#include "gfxWindowsPlatform.h"
#include "mozilla/layers/TextureClient.h"
#include "mozilla/layers/TextureD3D11.h"
#include "mozilla/layers/CompositableClient.h"
#include "mozilla/layers/CompositableForwarder.h"
#include "d3d11.h"
namespace mozilla {
namespace layers {
D3D11ShareHandleImage::D3D11ShareHandleImage(const gfx::IntSize& aSize,
const gfx::IntRect& aRect)
: Image(nullptr, ImageFormat::D3D11_SHARE_HANDLE_TEXTURE),
mSize(aSize),
mPictureRect(aRect)
{
}
bool
D3D11ShareHandleImage::AllocateTexture(D3D11RecycleAllocator* aAllocator, ID3D11Device* aDevice)
{
if (aAllocator) {
mTextureClient = aAllocator->CreateOrRecycleClient(gfx::SurfaceFormat::B8G8R8A8, mSize);
if (mTextureClient) {
mTexture = static_cast<D3D11TextureData*>(mTextureClient->GetInternalData())->GetD3D11Texture();
return true;
}
return false;
} else {
MOZ_ASSERT(aDevice);
CD3D11_TEXTURE2D_DESC newDesc(DXGI_FORMAT_B8G8R8A8_UNORM,
mSize.width, mSize.height, 1, 1,
D3D11_BIND_RENDER_TARGET | D3D11_BIND_SHADER_RESOURCE);
newDesc.MiscFlags = D3D11_RESOURCE_MISC_SHARED;
HRESULT hr = aDevice->CreateTexture2D(&newDesc, nullptr, getter_AddRefs(mTexture));
return SUCCEEDED(hr);
}
}
gfx::IntSize
D3D11ShareHandleImage::GetSize()
{
return mSize;
}
TextureClient*
D3D11ShareHandleImage::GetTextureClient(KnowsCompositor* aForwarder)
{
return mTextureClient;
}
already_AddRefed<gfx::SourceSurface>
D3D11ShareHandleImage::GetAsSourceSurface()
{
RefPtr<ID3D11Texture2D> texture = GetTexture();
if (!texture) {
NS_WARNING("Cannot readback from shared texture because no texture is available.");
return nullptr;
}
RefPtr<ID3D11Device> device;
texture->GetDevice(getter_AddRefs(device));
D3D11_TEXTURE2D_DESC desc;
texture->GetDesc(&desc);
CD3D11_TEXTURE2D_DESC softDesc(desc.Format, desc.Width, desc.Height);
softDesc.CPUAccessFlags = D3D11_CPU_ACCESS_READ;
softDesc.BindFlags = 0;
softDesc.MiscFlags = 0;
softDesc.MipLevels = 1;
softDesc.Usage = D3D11_USAGE_STAGING;
RefPtr<ID3D11Texture2D> softTexture;
HRESULT hr = device->CreateTexture2D(&softDesc,
NULL,
static_cast<ID3D11Texture2D**>(getter_AddRefs(softTexture)));
if (FAILED(hr)) {
NS_WARNING("Failed to create 2D staging texture.");
return nullptr;
}
RefPtr<ID3D11DeviceContext> context;
device->GetImmediateContext(getter_AddRefs(context));
if (!context) {
return nullptr;
}
context->CopyResource(softTexture, texture);
RefPtr<gfx::DataSourceSurface> surface =
gfx::Factory::CreateDataSourceSurface(mSize, gfx::SurfaceFormat::B8G8R8A8);
if (NS_WARN_IF(!surface)) {
return nullptr;
}
gfx::DataSourceSurface::MappedSurface mappedSurface;
if (!surface->Map(gfx::DataSourceSurface::WRITE, &mappedSurface)) {
return nullptr;
}
D3D11_MAPPED_SUBRESOURCE map;
hr = context->Map(softTexture, 0, D3D11_MAP_READ, 0, &map);
if (!SUCCEEDED(hr)) {
surface->Unmap();
return nullptr;
}
for (int y = 0; y < mSize.height; y++) {
memcpy(mappedSurface.mData + mappedSurface.mStride * y,
(unsigned char*)(map.pData) + map.RowPitch * y,
mSize.width * 4);
}
context->Unmap(softTexture, 0);
surface->Unmap();
return surface.forget();
}
ID3D11Texture2D*
D3D11ShareHandleImage::GetTexture() const {
return mTexture;
}
already_AddRefed<TextureClient>
D3D11RecycleAllocator::Allocate(gfx::SurfaceFormat aFormat,
gfx::IntSize aSize,
BackendSelector aSelector,
TextureFlags aTextureFlags,
TextureAllocationFlags aAllocFlags)
{
return CreateD3D11TextureClientWithDevice(aSize, aFormat,
aTextureFlags, aAllocFlags,
mDevice, mSurfaceAllocator->GetTextureForwarder());
}
already_AddRefed<TextureClient>
D3D11RecycleAllocator::CreateOrRecycleClient(gfx::SurfaceFormat aFormat,
const gfx::IntSize& aSize)
{
RefPtr<TextureClient> textureClient =
CreateOrRecycle(aFormat,
aSize,
BackendSelector::Content,
layers::TextureFlags::DEFAULT,
TextureAllocationFlags::ALLOC_MANUAL_SYNCHRONIZATION);
return textureClient.forget();
}
} // namespace layers
} // namespace mozilla
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