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/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 4; -*- */
/* 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 "SharedSurfaceANGLE.h"
#include <d3d11.h>
#include "GLContextEGL.h"
#include "GLLibraryEGL.h"
#include "mozilla/gfx/DeviceManagerDx.h"
#include "mozilla/layers/LayersSurfaces.h" // for SurfaceDescriptor, etc
namespace mozilla {
namespace gl {
// Returns `EGL_NO_SURFACE` (`0`) on error.
static EGLSurface CreatePBufferSurface(EglDisplay* egl, EGLConfig config,
const gfx::IntSize& size) {
const EGLint attribs[] = {LOCAL_EGL_WIDTH, size.width, LOCAL_EGL_HEIGHT,
size.height, LOCAL_EGL_NONE};
EGLSurface surface = egl->fCreatePbufferSurface(config, attribs);
if (!surface) {
EGLint err = egl->mLib->fGetError();
gfxCriticalError() << "Failed to create Pbuffer surface error: "
<< gfx::hexa(err) << " Size : " << size;
return 0;
}
return surface;
}
/*static*/
UniquePtr<SharedSurface_ANGLEShareHandle>
SharedSurface_ANGLEShareHandle::Create(const SharedSurfaceDesc& desc) {
const auto& gle = GLContextEGL::Cast(desc.gl);
const auto& egl = gle->mEgl;
MOZ_ASSERT(egl);
MOZ_ASSERT(egl->IsExtensionSupported(
EGLExtension::ANGLE_surface_d3d_texture_2d_share_handle));
const auto& config = gle->mConfig;
MOZ_ASSERT(config);
EGLSurface pbuffer = CreatePBufferSurface(egl.get(), config, desc.size);
if (!pbuffer) return nullptr;
// Declare everything before 'goto's.
HANDLE shareHandle = nullptr;
bool ok = egl->fQuerySurfacePointerANGLE(
pbuffer, LOCAL_EGL_D3D_TEXTURE_2D_SHARE_HANDLE_ANGLE, &shareHandle);
if (!ok) {
egl->fDestroySurface(pbuffer);
return nullptr;
}
void* opaqueKeyedMutex = nullptr;
egl->fQuerySurfacePointerANGLE(pbuffer, LOCAL_EGL_DXGI_KEYED_MUTEX_ANGLE,
&opaqueKeyedMutex);
RefPtr<IDXGIKeyedMutex> keyedMutex =
static_cast<IDXGIKeyedMutex*>(opaqueKeyedMutex);
#ifdef DEBUG
if (!keyedMutex) {
std::string envStr("1");
static auto env = PR_GetEnv("MOZ_REQUIRE_KEYED_MUTEX");
if (env) {
envStr = env;
}
if (envStr != "0") {
MOZ_ASSERT(keyedMutex, "set MOZ_REQUIRE_KEYED_MUTEX=0 to allow");
}
}
#endif
return AsUnique(new SharedSurface_ANGLEShareHandle(desc, egl, pbuffer,
shareHandle, keyedMutex));
}
SharedSurface_ANGLEShareHandle::SharedSurface_ANGLEShareHandle(
const SharedSurfaceDesc& desc, const std::weak_ptr<EglDisplay>& egl,
EGLSurface pbuffer, HANDLE shareHandle,
const RefPtr<IDXGIKeyedMutex>& keyedMutex)
: SharedSurface(desc, nullptr),
mEGL(egl),
mPBuffer(pbuffer),
mShareHandle(shareHandle),
mKeyedMutex(keyedMutex) {}
SharedSurface_ANGLEShareHandle::~SharedSurface_ANGLEShareHandle() {
const auto& gl = mDesc.gl;
if (gl && GLContextEGL::Cast(gl)->GetEGLSurfaceOverride() == mPBuffer) {
GLContextEGL::Cast(gl)->SetEGLSurfaceOverride(EGL_NO_SURFACE);
}
const auto egl = mEGL.lock();
if (egl) {
egl->fDestroySurface(mPBuffer);
}
}
void SharedSurface_ANGLEShareHandle::LockProdImpl() {
const auto& gl = mDesc.gl;
GLContextEGL::Cast(gl)->SetEGLSurfaceOverride(mPBuffer);
}
void SharedSurface_ANGLEShareHandle::UnlockProdImpl() {}
void SharedSurface_ANGLEShareHandle::ProducerAcquireImpl() {
if (mKeyedMutex) {
HRESULT hr = mKeyedMutex->AcquireSync(0, 10000);
if (hr == WAIT_TIMEOUT) {
MOZ_CRASH("GFX: ANGLE share handle timeout");
}
}
}
void SharedSurface_ANGLEShareHandle::ProducerReleaseImpl() {
const auto& gl = mDesc.gl;
if (mKeyedMutex) {
// XXX: ReleaseSync() has an implicit flush of the D3D commands
// whether we need Flush() or not depends on the ANGLE semantics.
// For now, we'll just do it
gl->fFlush();
mKeyedMutex->ReleaseSync(0);
return;
}
gl->fFinish();
}
void SharedSurface_ANGLEShareHandle::ProducerReadAcquireImpl() {
ProducerAcquireImpl();
}
void SharedSurface_ANGLEShareHandle::ProducerReadReleaseImpl() {
if (mKeyedMutex) {
mKeyedMutex->ReleaseSync(0);
return;
}
}
Maybe<layers::SurfaceDescriptor>
SharedSurface_ANGLEShareHandle::ToSurfaceDescriptor() {
const auto format = gfx::SurfaceFormat::B8G8R8A8;
return Some(layers::SurfaceDescriptorD3D10(
(WindowsHandle)mShareHandle, format, mDesc.size,
gfx::YUVColorSpace::UNKNOWN, gfx::ColorRange::FULL));
}
class ScopedLockTexture final {
public:
explicit ScopedLockTexture(ID3D11Texture2D* texture, bool* succeeded)
: mIsLocked(false), mTexture(texture) {
MOZ_ASSERT(NS_IsMainThread(),
"Must be on the main thread to use d3d11 immediate context");
MOZ_ASSERT(mTexture);
MOZ_ASSERT(succeeded);
*succeeded = false;
HRESULT hr;
mTexture->QueryInterface((IDXGIKeyedMutex**)getter_AddRefs(mMutex));
if (mMutex) {
hr = mMutex->AcquireSync(0, 10000);
if (hr == WAIT_TIMEOUT) {
MOZ_CRASH("GFX: ANGLE scoped lock timeout");
}
if (FAILED(hr)) {
NS_WARNING("Failed to lock the texture");
return;
}
}
RefPtr<ID3D11Device> device =
gfx::DeviceManagerDx::Get()->GetContentDevice();
if (!device) {
return;
}
device->GetImmediateContext(getter_AddRefs(mDeviceContext));
mTexture->GetDesc(&mDesc);
mDesc.BindFlags = 0;
mDesc.Usage = D3D11_USAGE_STAGING;
mDesc.CPUAccessFlags = D3D11_CPU_ACCESS_READ;
mDesc.MiscFlags = 0;
hr = device->CreateTexture2D(&mDesc, nullptr,
getter_AddRefs(mCopiedTexture));
if (FAILED(hr)) {
return;
}
mDeviceContext->CopyResource(mCopiedTexture, mTexture);
hr = mDeviceContext->Map(mCopiedTexture, 0, D3D11_MAP_READ, 0,
&mSubresource);
if (FAILED(hr)) {
return;
}
*succeeded = true;
mIsLocked = true;
}
~ScopedLockTexture() {
mDeviceContext->Unmap(mCopiedTexture, 0);
if (mMutex) {
HRESULT hr = mMutex->ReleaseSync(0);
if (FAILED(hr)) {
NS_WARNING("Failed to unlock the texture");
}
}
mIsLocked = false;
}
bool mIsLocked;
RefPtr<ID3D11Texture2D> mTexture;
RefPtr<ID3D11Texture2D> mCopiedTexture;
RefPtr<IDXGIKeyedMutex> mMutex;
RefPtr<ID3D11DeviceContext> mDeviceContext;
D3D11_TEXTURE2D_DESC mDesc;
D3D11_MAPPED_SUBRESOURCE mSubresource;
};
////////////////////////////////////////////////////////////////////////////////
// Factory
/*static*/
UniquePtr<SurfaceFactory_ANGLEShareHandle>
SurfaceFactory_ANGLEShareHandle::Create(GLContext& gl) {
if (!gl.IsANGLE()) return nullptr;
const auto& gle = *GLContextEGL::Cast(&gl);
const auto& egl = gle.mEgl;
if (!egl->IsExtensionSupported(
EGLExtension::ANGLE_surface_d3d_texture_2d_share_handle)) {
return nullptr;
}
if (XRE_IsContentProcess()) {
gfxPlatform::GetPlatform()->EnsureDevicesInitialized();
}
gfx::DeviceManagerDx* dm = gfx::DeviceManagerDx::Get();
MOZ_ASSERT(dm);
if (gl.IsWARP() != dm->IsWARP() || !dm->TextureSharingWorks()) {
return nullptr;
}
return AsUnique(new SurfaceFactory_ANGLEShareHandle(
{&gl, SharedSurfaceType::EGLSurfaceANGLE, layers::TextureType::D3D11,
true}));
}
} /* namespace gl */
} /* namespace mozilla */
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