gfx/webrender_bindings/RenderDMABUFTextureHost.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "RenderDMABUFTextureHost.h"
   8
   9 #include "GLContextEGL.h"
  10 #include "mozilla/gfx/Logging.h"
  11 #include "ScopedGLHelpers.h"
  12
  13 namespace mozilla::wr {
  14
  15 RenderDMABUFTextureHost::RenderDMABUFTextureHost(DMABufSurface* aSurface)
  16     : mSurface(aSurface) {
  17   MOZ_COUNT_CTOR_INHERITED(RenderDMABUFTextureHost, RenderTextureHost);
  18 }
  19
  20 RenderDMABUFTextureHost::~RenderDMABUFTextureHost() {
  21   MOZ_COUNT_DTOR_INHERITED(RenderDMABUFTextureHost, RenderTextureHost);
  22   DeleteTextureHandle();
  23 }
  24
  25 wr::WrExternalImage RenderDMABUFTextureHost::Lock(uint8_t aChannelIndex,
  26                                                   gl::GLContext* aGL) {
  27   if (mGL.get() != aGL) {
  28     if (mGL) {
  29       // This should not happen. EGLImage is created only in
  30       // parent process.
  31       MOZ_ASSERT_UNREACHABLE("Unexpected GL context");
  32       return InvalidToWrExternalImage();
  33     }
  34     mGL = aGL;
  35   }
  36
  37   if (!mGL || !mGL->MakeCurrent()) {
  38     return InvalidToWrExternalImage();
  39   }
  40
  41   if (!mSurface->GetTexture(aChannelIndex)) {
  42     if (!mSurface->CreateTexture(mGL, aChannelIndex)) {
  43       return InvalidToWrExternalImage();
  44     }
  45     ActivateBindAndTexParameteri(mGL, LOCAL_GL_TEXTURE0, LOCAL_GL_TEXTURE_2D,
  46                                  mSurface->GetTexture(aChannelIndex));
  47   }
  48
  49   const auto uvs = GetUvCoords(gfx::IntSize(
  50       mSurface->GetWidth(aChannelIndex), mSurface->GetHeight(aChannelIndex)));
  51   return NativeTextureToWrExternalImage(mSurface->GetTexture(aChannelIndex),
  52                                         uvs.first.x, uvs.first.y, uvs.second.x,
  53                                         uvs.second.y);
  54 }
  55
  56 void RenderDMABUFTextureHost::Unlock() {}
  57
  58 void RenderDMABUFTextureHost::DeleteTextureHandle() {
  59   mSurface->ReleaseTextures();
  60 }
  61
  62 void RenderDMABUFTextureHost::ClearCachedResources() {
  63   DeleteTextureHandle();
  64   mGL = nullptr;
  65 }
  66
  67 }  // namespace mozilla::wr