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/* -*- Mode: C++; tab-width: 2; 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 RectTextureImage_h_
#define RectTextureImage_h_
#include "mozilla/RefPtr.h"
class MacIOSurface;
namespace mozilla {
namespace gl {
class GLContext;
} // namespace gl
namespace widget {
// Manages a texture which can resize dynamically, binds to the
// LOCAL_GL_TEXTURE_RECTANGLE_ARB texture target and is automatically backed
// by a power-of-two size GL texture. The latter two features are used for
// compatibility with older Mac hardware which we block GL layers on.
// RectTextureImages are used both for accelerated GL layers drawing and for
// OMTC BasicLayers drawing.
class RectTextureImage {
public:
RectTextureImage();
virtual ~RectTextureImage();
already_AddRefed<gfx::DrawTarget>
BeginUpdate(const LayoutDeviceIntSize& aNewSize,
const LayoutDeviceIntRegion& aDirtyRegion =
LayoutDeviceIntRegion());
void EndUpdate();
void UpdateIfNeeded(const LayoutDeviceIntSize& aNewSize,
const LayoutDeviceIntRegion& aDirtyRegion,
void (^aCallback)(gfx::DrawTarget*,
const LayoutDeviceIntRegion&))
{
RefPtr<gfx::DrawTarget> drawTarget = BeginUpdate(aNewSize, aDirtyRegion);
if (drawTarget) {
aCallback(drawTarget, GetUpdateRegion());
EndUpdate();
}
}
void UpdateFromCGContext(const LayoutDeviceIntSize& aNewSize,
const LayoutDeviceIntRegion& aDirtyRegion,
CGContextRef aCGContext);
LayoutDeviceIntRegion GetUpdateRegion() {
MOZ_ASSERT(mInUpdate, "update region only valid during update");
return mUpdateRegion;
}
void Draw(mozilla::layers::GLManager* aManager,
const LayoutDeviceIntPoint& aLocation,
const gfx::Matrix4x4& aTransform = gfx::Matrix4x4());
protected:
void DeleteTexture();
void BindIOSurfaceToTexture(gl::GLContext* aGL);
RefPtr<MacIOSurface> mIOSurface;
gl::GLContext* mGLContext;
LayoutDeviceIntRegion mUpdateRegion;
LayoutDeviceIntSize mBufferSize;
GLuint mTexture;
bool mInUpdate;
};
} // namespace widget
} // namespace mozilla
#endif // RectTextureImage_h_
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