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81 lines
2.4 KiB
C++
81 lines
2.4 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef RectTextureImage_h_
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#define RectTextureImage_h_
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#include "mozilla/RefPtr.h"
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class MacIOSurface;
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namespace mozilla {
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namespace gl {
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class GLContext;
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} // namespace gl
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namespace widget {
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// Manages a texture which can resize dynamically, binds to the
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// LOCAL_GL_TEXTURE_RECTANGLE_ARB texture target and is automatically backed
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// by a power-of-two size GL texture. The latter two features are used for
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// compatibility with older Mac hardware which we block GL layers on.
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// RectTextureImages are used both for accelerated GL layers drawing and for
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// OMTC BasicLayers drawing.
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class RectTextureImage {
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public:
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RectTextureImage();
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virtual ~RectTextureImage();
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already_AddRefed<gfx::DrawTarget>
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BeginUpdate(const LayoutDeviceIntSize& aNewSize,
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const LayoutDeviceIntRegion& aDirtyRegion =
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LayoutDeviceIntRegion());
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void EndUpdate();
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void UpdateIfNeeded(const LayoutDeviceIntSize& aNewSize,
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const LayoutDeviceIntRegion& aDirtyRegion,
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void (^aCallback)(gfx::DrawTarget*,
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const LayoutDeviceIntRegion&))
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{
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RefPtr<gfx::DrawTarget> drawTarget = BeginUpdate(aNewSize, aDirtyRegion);
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if (drawTarget) {
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aCallback(drawTarget, GetUpdateRegion());
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EndUpdate();
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}
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}
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void UpdateFromCGContext(const LayoutDeviceIntSize& aNewSize,
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const LayoutDeviceIntRegion& aDirtyRegion,
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CGContextRef aCGContext);
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LayoutDeviceIntRegion GetUpdateRegion() {
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MOZ_ASSERT(mInUpdate, "update region only valid during update");
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return mUpdateRegion;
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}
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void Draw(mozilla::layers::GLManager* aManager,
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const LayoutDeviceIntPoint& aLocation,
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const gfx::Matrix4x4& aTransform = gfx::Matrix4x4());
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protected:
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void DeleteTexture();
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void BindIOSurfaceToTexture(gl::GLContext* aGL);
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RefPtr<MacIOSurface> mIOSurface;
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gl::GLContext* mGLContext;
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LayoutDeviceIntRegion mUpdateRegion;
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LayoutDeviceIntSize mBufferSize;
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GLuint mTexture;
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bool mInUpdate;
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};
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} // namespace widget
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} // namespace mozilla
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#endif // RectTextureImage_h_
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