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/* -*- Mode: C++; tab-width: 4; 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 "ExternalTextureD3D11.h"
#include <d3d11.h>
#include "mozilla/gfx/DeviceManagerDx.h"
#include "mozilla/gfx/Logging.h"
#include "mozilla/layers/ImageDataSerializer.h"
namespace mozilla::webgpu {
// static
UniquePtr<ExternalTextureD3D11> ExternalTextureD3D11::Create(
const uint32_t aWidth, const uint32_t aHeight,
const struct ffi::WGPUTextureFormat aFormat,
const ffi::WGPUTextureUsages aUsage) {
const RefPtr<ID3D11Device> d3d11Device =
gfx::DeviceManagerDx::Get()->GetCompositorDevice();
if (!d3d11Device) {
gfxCriticalNoteOnce << "CompositorDevice does not exist";
return nullptr;
}
if (aFormat.tag != ffi::WGPUTextureFormat_Bgra8Unorm) {
gfxCriticalNoteOnce << "Non supported format: " << aFormat.tag;
return nullptr;
}
CD3D11_TEXTURE2D_DESC desc(
DXGI_FORMAT_B8G8R8A8_UNORM, aWidth, aHeight, 1, 1,
D3D11_BIND_SHADER_RESOURCE | D3D11_BIND_RENDER_TARGET);
if (aUsage & WGPUTextureUsages_STORAGE_BINDING) {
desc.BindFlags |= D3D11_BIND_UNORDERED_ACCESS;
}
desc.MiscFlags =
D3D11_RESOURCE_MISC_SHARED_NTHANDLE | D3D11_RESOURCE_MISC_SHARED;
RefPtr<ID3D11Texture2D> texture;
HRESULT hr =
d3d11Device->CreateTexture2D(&desc, nullptr, getter_AddRefs(texture));
if (FAILED(hr)) {
gfxCriticalNoteOnce << "CreateTexture2D failed: " << gfx::hexa(hr);
return nullptr;
}
RefPtr<IDXGIResource1> resource;
texture->QueryInterface((IDXGIResource1**)getter_AddRefs(resource));
if (!resource) {
gfxCriticalNoteOnce << "Failed to get IDXGIResource";
return 0;
}
HANDLE sharedHandle;
hr = resource->CreateSharedHandle(
nullptr, DXGI_SHARED_RESOURCE_READ | DXGI_SHARED_RESOURCE_WRITE, nullptr,
&sharedHandle);
if (FAILED(hr)) {
gfxCriticalNoteOnce << "GetSharedHandle failed: " << gfx::hexa(hr);
return 0;
}
RefPtr<gfx::FileHandleWrapper> handle =
new gfx::FileHandleWrapper(UniqueFileHandle(sharedHandle));
return MakeUnique<ExternalTextureD3D11>(aWidth, aHeight, aFormat, aUsage,
texture, std::move(handle));
}
ExternalTextureD3D11::ExternalTextureD3D11(
const uint32_t aWidth, const uint32_t aHeight,
const struct ffi::WGPUTextureFormat aFormat,
const ffi::WGPUTextureUsages aUsage, const RefPtr<ID3D11Texture2D> aTexture,
RefPtr<gfx::FileHandleWrapper>&& aSharedHandle)
: ExternalTexture(aWidth, aHeight, aFormat, aUsage),
mTexture(aTexture),
mSharedHandle(std::move(aSharedHandle)) {
MOZ_ASSERT(mTexture);
}
ExternalTextureD3D11::~ExternalTextureD3D11() {}
void* ExternalTextureD3D11::GetExternalTextureHandle() {
if (!mSharedHandle) {
return nullptr;
}
return mSharedHandle->GetHandle();
}
Maybe<layers::SurfaceDescriptor> ExternalTextureD3D11::ToSurfaceDescriptor(
Maybe<gfx::FenceInfo>& aFenceInfo) {
const auto format = gfx::SurfaceFormat::B8G8R8A8;
return Some(layers::SurfaceDescriptorD3D10(
mSharedHandle,
/* gpuProcessTextureId */ Nothing(),
/* arrayIndex */ 0, format, gfx::IntSize(mWidth, mHeight),
gfx::ColorSpace2::SRGB, gfx::ColorRange::FULL,
/* hasKeyedMutex */ false, aFenceInfo,
/* gpuProcessQueryId */ Nothing()));
}
void ExternalTextureD3D11::GetSnapshot(const ipc::Shmem& aDestShmem,
const gfx::IntSize& aSize) {
RefPtr<ID3D11Device> device;
mTexture->GetDevice(getter_AddRefs(device));
if (!device) {
MOZ_ASSERT_UNREACHABLE("unexpected to be called");
gfxCriticalNoteOnce << "Failed to get ID3D11Device";
return;
}
RefPtr<ID3D11DeviceContext> deviceContext;
device->GetImmediateContext(getter_AddRefs(deviceContext));
if (!deviceContext) {
MOZ_ASSERT_UNREACHABLE("unexpected to be called");
gfxCriticalNoteOnce << "Failed to get ID3D11DeviceContext";
return;
}
D3D11_TEXTURE2D_DESC textureDesc = {0};
mTexture->GetDesc(&textureDesc);
textureDesc.CPUAccessFlags = D3D11_CPU_ACCESS_READ;
textureDesc.Usage = D3D11_USAGE_STAGING;
textureDesc.BindFlags = 0;
textureDesc.MiscFlags = 0;
textureDesc.MipLevels = 1;
RefPtr<ID3D11Texture2D> cpuTexture;
HRESULT hr = device->CreateTexture2D(&textureDesc, nullptr,
getter_AddRefs(cpuTexture));
if (FAILED(hr)) {
MOZ_ASSERT_UNREACHABLE("unexpected to be called");
gfxCriticalNote << "Failed to create ID3D11Texture2D: " << gfx::hexa(hr);
return;
}
deviceContext->CopyResource(cpuTexture, mTexture);
D3D11_MAPPED_SUBRESOURCE map;
hr = deviceContext->Map(cpuTexture, 0, D3D11_MAP_READ, 0, &map);
if (FAILED(hr)) {
MOZ_ASSERT_UNREACHABLE("unexpected to be called");
gfxCriticalNote << "Failed to map ID3D11Texture2D: " << gfx::hexa(hr);
return;
}
const uint32_t stride = layers::ImageDataSerializer::ComputeRGBStride(
gfx::SurfaceFormat::B8G8R8A8, aSize.width);
uint8_t* src = static_cast<uint8_t*>(map.pData);
uint8_t* dst = aDestShmem.get<uint8_t>();
MOZ_ASSERT(stride * aSize.height <= aDestShmem.Size<uint8_t>());
for (int y = 0; y < aSize.height; y++) {
memcpy(dst, src, stride);
src += map.RowPitch;
dst += stride;
}
}
} // namespace mozilla::webgpu
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