gfx/webrender_bindings/RenderDcompSurfaceTextureHost.cpp

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #include "RenderDcompSurfaceTextureHost.h"
   7
   8 #include <dcomp.h>
   9
  10 #define LOG(msg, ...)                                                        \
  11   MOZ_LOG(gDcompSurface, LogLevel::Debug,                                    \
  12           ("RenderDcompSurfaceTextureHost=%p, handle=%p, size=[%u,%u] " msg, \
  13            this, this->mHandle, this->mSize.Width(), this->mSize.Height(),   \
  14            ##__VA_ARGS__))
  15
  16 namespace mozilla::wr {
  17
  18 RenderDcompSurfaceTextureHost::RenderDcompSurfaceTextureHost(
  19     HANDLE aHandle, gfx::IntSize aSize, gfx::SurfaceFormat aFormat)
  20     : mHandle(aHandle), mSize(aSize), mFormat(aFormat) {
  21   MOZ_ASSERT(aHandle && aHandle != INVALID_HANDLE_VALUE);
  22 }
  23
  24 IDCompositionSurface* RenderDcompSurfaceTextureHost::CreateSurfaceFromDevice(
  25     IDCompositionDevice* aDevice) {
  26   // Already created surface, no need to recreate it again.
  27   if (mDcompSurface) {
  28     return mDcompSurface;
  29   }
  30
  31   auto* surface =
  32       static_cast<IDCompositionSurface**>(getter_AddRefs(mDcompSurface));
  33   auto hr = aDevice->CreateSurfaceFromHandle(
  34       mHandle, reinterpret_cast<IUnknown**>(surface));
  35   if (FAILED(hr)) {
  36     LOG("Failed to create surface from Dcomp handle %p, hr=%lx", mHandle, hr);
  37     return nullptr;
  38   }
  39   LOG("Created surface %p correctly", surface);
  40   return mDcompSurface;
  41 }
  42
  43 }  // namespace mozilla::wr
  44
  45 #undef LOG