1 files changed, 114 insertions, 0 deletions
diff --git a/gfx/layers/opengl/MacIOSurfaceTextureHostOGL.h b/gfx/layers/opengl/MacIOSurfaceTextureHostOGL.h
new file mode 100644
index 000000000..55e2f5019
--- /dev/null
+++ b/gfx/layers/opengl/MacIOSurfaceTextureHostOGL.h
@@ -0,0 +1,114 @@
+/* -*- Mode: C++; tab-width: 20; 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/. */
+
+#ifndef MOZILLA_GFX_MACIOSURFACETEXTUREHOSTOGL_H
+#define MOZILLA_GFX_MACIOSURFACETEXTUREHOSTOGL_H
+
+#include "mozilla/layers/CompositorOGL.h"
+#include "mozilla/layers/TextureHostOGL.h"
+
+class MacIOSurface;
+
+namespace mozilla {
+namespace layers {
+
+/**
+ * A texture source meant for use with MacIOSurfaceTextureHostOGL.
+ *
+ * It does not own any GL texture, and attaches its shared handle to one of
+ * the compositor's temporary textures when binding.
+ */
+class MacIOSurfaceTextureSourceOGL : public TextureSource
+                                   , public TextureSourceOGL
+{
+public:
+  MacIOSurfaceTextureSourceOGL(CompositorOGL* aCompositor,
+                               MacIOSurface* aSurface);
+  virtual ~MacIOSurfaceTextureSourceOGL();
+
+  virtual const char* Name() const override { return "MacIOSurfaceTextureSourceOGL"; }
+
+  virtual TextureSourceOGL* AsSourceOGL() override { return this; }
+
+  virtual void BindTexture(GLenum activetex,
+                           gfx::SamplingFilter aSamplingFilter) override;
+
+  virtual bool IsValid() const override { return !!gl(); }
+
+  virtual gfx::IntSize GetSize() const override;
+
+  virtual gfx::SurfaceFormat GetFormat() const override;
+
+  virtual GLenum GetTextureTarget() const override { return LOCAL_GL_TEXTURE_RECTANGLE_ARB; }
+
+  virtual GLenum GetWrapMode() const override { return LOCAL_GL_CLAMP_TO_EDGE; }
+
+  // MacIOSurfaceTextureSourceOGL doesn't own any gl texture
+  virtual void DeallocateDeviceData() override {}
+
+  virtual void SetCompositor(Compositor* aCompositor) override;
+
+  gl::GLContext* gl() const;
+
+protected:
+  RefPtr<CompositorOGL> mCompositor;
+  RefPtr<MacIOSurface> mSurface;
+};
+
+/**
+ * A TextureHost for shared MacIOSurface
+ *
+ * Most of the logic actually happens in MacIOSurfaceTextureSourceOGL.
+ */
+class MacIOSurfaceTextureHostOGL : public TextureHost
+{
+public:
+  MacIOSurfaceTextureHostOGL(TextureFlags aFlags,
+                             const SurfaceDescriptorMacIOSurface& aDescriptor);
+  virtual ~MacIOSurfaceTextureHostOGL();
+
+  // MacIOSurfaceTextureSourceOGL doesn't own any GL texture
+  virtual void DeallocateDeviceData() override {}
+
+  virtual void SetCompositor(Compositor* aCompositor) override;
+
+  virtual Compositor* GetCompositor() override { return mCompositor; }
+
+  virtual bool Lock() override;
+
+  virtual gfx::SurfaceFormat GetFormat() const override;
+  virtual gfx::SurfaceFormat GetReadFormat() const override;
+
+  virtual bool BindTextureSource(CompositableTextureSourceRef& aTexture) override
+  {
+    aTexture = mTextureSource;
+    return !!aTexture;
+  }
+
+  virtual already_AddRefed<gfx::DataSourceSurface> GetAsSurface() override
+  {
+    return nullptr; // XXX - implement this (for MOZ_DUMP_PAINTING)
+  }
+
+  gl::GLContext* gl() const;
+
+  virtual gfx::IntSize GetSize() const override;
+
+#ifdef MOZ_LAYERS_HAVE_LOG
+  virtual const char* Name() override { return "MacIOSurfaceTextureHostOGL"; }
+#endif
+
+protected:
+  GLTextureSource* CreateTextureSourceForPlane(size_t aPlane);
+
+  RefPtr<CompositorOGL> mCompositor;
+  RefPtr<GLTextureSource> mTextureSource;
+  RefPtr<MacIOSurface> mSurface;
+};
+
+} // namespace layers
+} // namespace mozilla
+
+#endif // MOZILLA_GFX_MACIOSURFACETEXTUREHOSTOGL_H