1 files changed, 67 insertions, 0 deletions
diff --git a/gfx/webrender_bindings/RenderDMABUFTextureHost.cpp b/gfx/webrender_bindings/RenderDMABUFTextureHost.cpp
new file mode 100644
index 0000000000..f52535b95a
--- /dev/null
+++ b/gfx/webrender_bindings/RenderDMABUFTextureHost.cpp
@@ -0,0 +1,67 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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 "RenderDMABUFTextureHost.h"
+
+#include "GLContextEGL.h"
+#include "mozilla/gfx/Logging.h"
+#include "ScopedGLHelpers.h"
+
+namespace mozilla::wr {
+
+RenderDMABUFTextureHost::RenderDMABUFTextureHost(DMABufSurface* aSurface)
+    : mSurface(aSurface) {
+  MOZ_COUNT_CTOR_INHERITED(RenderDMABUFTextureHost, RenderTextureHost);
+}
+
+RenderDMABUFTextureHost::~RenderDMABUFTextureHost() {
+  MOZ_COUNT_DTOR_INHERITED(RenderDMABUFTextureHost, RenderTextureHost);
+  DeleteTextureHandle();
+}
+
+wr::WrExternalImage RenderDMABUFTextureHost::Lock(uint8_t aChannelIndex,
+                                                  gl::GLContext* aGL) {
+  if (mGL.get() != aGL) {
+    if (mGL) {
+      // This should not happen. EGLImage is created only in
+      // parent process.
+      MOZ_ASSERT_UNREACHABLE("Unexpected GL context");
+      return InvalidToWrExternalImage();
+    }
+    mGL = aGL;
+  }
+
+  if (!mGL || !mGL->MakeCurrent()) {
+    return InvalidToWrExternalImage();
+  }
+
+  if (!mSurface->GetTexture(aChannelIndex)) {
+    if (!mSurface->CreateTexture(mGL, aChannelIndex)) {
+      return InvalidToWrExternalImage();
+    }
+    ActivateBindAndTexParameteri(mGL, LOCAL_GL_TEXTURE0, LOCAL_GL_TEXTURE_2D,
+                                 mSurface->GetTexture(aChannelIndex));
+  }
+
+  const auto uvs = GetUvCoords(gfx::IntSize(
+      mSurface->GetWidth(aChannelIndex), mSurface->GetHeight(aChannelIndex)));
+  return NativeTextureToWrExternalImage(mSurface->GetTexture(aChannelIndex),
+                                        uvs.first.x, uvs.first.y, uvs.second.x,
+                                        uvs.second.y);
+}
+
+void RenderDMABUFTextureHost::Unlock() {}
+
+void RenderDMABUFTextureHost::DeleteTextureHandle() {
+  mSurface->ReleaseTextures();
+}
+
+void RenderDMABUFTextureHost::ClearCachedResources() {
+  DeleteTextureHandle();
+  mGL = nullptr;
+}
+
+}  // namespace mozilla::wr