540 lines
16 KiB
C++
540 lines
16 KiB
C++
/* -*- Mode: C++; tab-width: 20; 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 MOZILLA_GFX_TEXTUREOGL_H
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#define MOZILLA_GFX_TEXTUREOGL_H
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#include <stddef.h> // for size_t
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#include <stdint.h> // for uint64_t
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#include "CompositableHost.h"
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#include "GLContextTypes.h" // for GLContext
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#include "GLDefs.h" // for GLenum, LOCAL_GL_CLAMP_TO_EDGE, etc
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#include "GLTextureImage.h" // for TextureImage
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#include "gfxTypes.h"
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#include "mozilla/GfxMessageUtils.h" // for gfxContentType
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#include "mozilla/Assertions.h" // for MOZ_ASSERT, etc
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#include "mozilla/Attributes.h" // for override
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#include "mozilla/RefPtr.h" // for RefPtr
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#include "mozilla/gfx/Matrix.h" // for Matrix4x4
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#include "mozilla/gfx/Point.h" // for IntSize, IntPoint
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#include "mozilla/gfx/Types.h" // for SurfaceFormat, etc
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#include "mozilla/layers/CompositorOGL.h" // for CompositorOGL
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#include "mozilla/layers/CompositorTypes.h" // for TextureFlags
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#include "mozilla/layers/LayersSurfaces.h" // for SurfaceDescriptor
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#include "mozilla/layers/TextureHost.h" // for TextureHost, etc
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#include "mozilla/mozalloc.h" // for operator delete, etc
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#include "nsCOMPtr.h" // for already_AddRefed
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#include "nsDebug.h" // for NS_WARNING
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#include "nsISupportsImpl.h" // for TextureImage::Release, etc
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#include "nsRegionFwd.h" // for nsIntRegion
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#include "OGLShaderProgram.h" // for ShaderProgramType, etc
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namespace mozilla {
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namespace gfx {
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class DataSourceSurface;
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} // namespace gfx
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namespace gl {
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class AndroidSurfaceTexture;
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} // namespace gl
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namespace layers {
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class Compositor;
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class CompositorOGL;
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class TextureImageTextureSourceOGL;
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class GLTextureSource;
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inline void ApplySamplingFilterToBoundTexture(gl::GLContext* aGL,
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gfx::SamplingFilter aSamplingFilter,
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GLuint aTarget = LOCAL_GL_TEXTURE_2D)
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{
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GLenum filter =
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(aSamplingFilter == gfx::SamplingFilter::POINT ? LOCAL_GL_NEAREST : LOCAL_GL_LINEAR);
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aGL->fTexParameteri(aTarget, LOCAL_GL_TEXTURE_MIN_FILTER, filter);
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aGL->fTexParameteri(aTarget, LOCAL_GL_TEXTURE_MAG_FILTER, filter);
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}
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/*
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* TextureHost implementations for the OpenGL backend.
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*
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* Note that it is important to be careful about the ownership model with
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* the OpenGL backend, due to some widget limitation on Linux: before
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* the nsBaseWidget associated with our OpenGL context has been completely
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* deleted, every resource belonging to the OpenGL context MUST have been
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* released. At the moment the teardown sequence happens in the middle of
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* the nsBaseWidget's destructor, meaning that at a given moment we must be
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* able to easily find and release all the GL resources.
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* The point is: be careful about the ownership model and limit the number
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* of objects sharing references to GL resources to make the tear down
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* sequence as simple as possible.
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*/
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/**
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* TextureSourceOGL provides the necessary API for CompositorOGL to composite
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* a TextureSource.
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*/
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class TextureSourceOGL
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{
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public:
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TextureSourceOGL()
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: mHasCachedSamplingFilter(false)
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{}
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virtual bool IsValid() const = 0;
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virtual void BindTexture(GLenum aTextureUnit,
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gfx::SamplingFilter aSamplingFilter) = 0;
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virtual gfx::IntSize GetSize() const = 0;
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virtual GLenum GetTextureTarget() const { return LOCAL_GL_TEXTURE_2D; }
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virtual gfx::SurfaceFormat GetFormat() const = 0;
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virtual GLenum GetWrapMode() const = 0;
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virtual gfx::Matrix4x4 GetTextureTransform() { return gfx::Matrix4x4(); }
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virtual TextureImageTextureSourceOGL* AsTextureImageTextureSource() { return nullptr; }
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virtual GLTextureSource* AsGLTextureSource() { return nullptr; }
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void SetSamplingFilter(gl::GLContext* aGL, gfx::SamplingFilter aSamplingFilter)
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{
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if (mHasCachedSamplingFilter &&
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mCachedSamplingFilter == aSamplingFilter) {
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return;
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}
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mHasCachedSamplingFilter = true;
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mCachedSamplingFilter = aSamplingFilter;
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ApplySamplingFilterToBoundTexture(aGL, aSamplingFilter, GetTextureTarget());
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}
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void ClearCachedFilter() { mHasCachedSamplingFilter = false; }
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private:
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gfx::SamplingFilter mCachedSamplingFilter;
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bool mHasCachedSamplingFilter;
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};
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/**
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* A TextureSource backed by a TextureImage.
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*
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* Depending on the underlying TextureImage, may support texture tiling, so
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* make sure to check AsBigImageIterator() and use the texture accordingly.
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*
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* This TextureSource can be used without a TextureHost and manage it's own
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* GL texture(s).
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*/
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class TextureImageTextureSourceOGL final : public DataTextureSource
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, public TextureSourceOGL
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, public BigImageIterator
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{
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public:
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explicit TextureImageTextureSourceOGL(CompositorOGL *aCompositor,
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TextureFlags aFlags = TextureFlags::DEFAULT)
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: mCompositor(aCompositor)
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, mFlags(aFlags)
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, mIterating(false)
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{}
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virtual const char* Name() const override { return "TextureImageTextureSourceOGL"; }
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// DataTextureSource
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virtual bool Update(gfx::DataSourceSurface* aSurface,
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nsIntRegion* aDestRegion = nullptr,
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gfx::IntPoint* aSrcOffset = nullptr) override;
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void EnsureBuffer(const gfx::IntSize& aSize,
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gfxContentType aContentType);
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void CopyTo(const gfx::IntRect& aSourceRect,
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DataTextureSource* aDest,
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const gfx::IntRect& aDestRect);
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virtual TextureImageTextureSourceOGL* AsTextureImageTextureSource() override { return this; }
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// TextureSource
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virtual void DeallocateDeviceData() override
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{
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mTexImage = nullptr;
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SetUpdateSerial(0);
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}
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virtual TextureSourceOGL* AsSourceOGL() override { return this; }
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virtual void BindTexture(GLenum aTextureUnit,
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gfx::SamplingFilter aSamplingFilter) override;
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virtual gfx::IntSize GetSize() const override;
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virtual gfx::SurfaceFormat GetFormat() const override;
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virtual bool IsValid() const override { return !!mTexImage; }
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virtual void SetCompositor(Compositor* aCompositor) override;
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virtual GLenum GetWrapMode() const override
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{
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return mTexImage->GetWrapMode();
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}
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// BigImageIterator
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virtual BigImageIterator* AsBigImageIterator() override { return this; }
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virtual void BeginBigImageIteration() override
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{
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mTexImage->BeginBigImageIteration();
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mIterating = true;
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}
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virtual void EndBigImageIteration() override
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{
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mIterating = false;
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}
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virtual gfx::IntRect GetTileRect() override;
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virtual size_t GetTileCount() override
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{
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return mTexImage->GetTileCount();
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}
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virtual bool NextTile() override
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{
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return mTexImage->NextTile();
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}
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protected:
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RefPtr<gl::TextureImage> mTexImage;
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RefPtr<CompositorOGL> mCompositor;
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TextureFlags mFlags;
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bool mIterating;
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};
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/**
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* A texture source for GL textures.
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*
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* It does not own any GL texture, and attaches its shared handle to one of
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* the compositor's temporary textures when binding.
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*
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* The shared texture handle is owned by the TextureHost.
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*/
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class GLTextureSource : public TextureSource
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, public TextureSourceOGL
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{
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public:
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GLTextureSource(CompositorOGL* aCompositor,
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GLuint aTextureHandle,
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GLenum aTarget,
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gfx::IntSize aSize,
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gfx::SurfaceFormat aFormat,
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bool aExternallyOwned = false);
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~GLTextureSource();
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virtual const char* Name() const override { return "GLTextureSource"; }
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virtual GLTextureSource* AsGLTextureSource() override { return this; }
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virtual TextureSourceOGL* AsSourceOGL() override { return this; }
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virtual void BindTexture(GLenum activetex,
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gfx::SamplingFilter aSamplingFilter) override;
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virtual bool IsValid() const override;
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virtual gfx::IntSize GetSize() const override { return mSize; }
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virtual gfx::SurfaceFormat GetFormat() const override { return mFormat; }
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virtual GLenum GetTextureTarget() const override { return mTextureTarget; }
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virtual GLenum GetWrapMode() const override { return LOCAL_GL_CLAMP_TO_EDGE; }
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virtual void DeallocateDeviceData() override;
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virtual void SetCompositor(Compositor* aCompositor) override;
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void SetSize(gfx::IntSize aSize) { mSize = aSize; }
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void SetFormat(gfx::SurfaceFormat aFormat) { mFormat = aFormat; }
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GLuint GetTextureHandle() const { return mTextureHandle; }
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gl::GLContext* gl() const;
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protected:
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void DeleteTextureHandle();
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RefPtr<CompositorOGL> mCompositor;
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GLuint mTextureHandle;
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GLenum mTextureTarget;
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gfx::IntSize mSize;
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gfx::SurfaceFormat mFormat;
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// If the texture is externally owned, the gl handle will not be deleted
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// in the destructor.
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bool mExternallyOwned;
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};
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class GLTextureHost : public TextureHost
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{
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public:
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GLTextureHost(TextureFlags aFlags,
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GLuint aTextureHandle,
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GLenum aTarget,
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GLsync aSync,
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gfx::IntSize aSize,
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bool aHasAlpha);
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virtual ~GLTextureHost();
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// We don't own anything.
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virtual void DeallocateDeviceData() override {}
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virtual void SetCompositor(Compositor* aCompositor) override;
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virtual Compositor* GetCompositor() override { return mCompositor; }
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virtual bool Lock() override;
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virtual void Unlock() override {}
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virtual gfx::SurfaceFormat GetFormat() const override;
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virtual bool BindTextureSource(CompositableTextureSourceRef& aTexture) override
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{
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aTexture = mTextureSource;
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return !!aTexture;
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}
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virtual already_AddRefed<gfx::DataSourceSurface> GetAsSurface() override
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{
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return nullptr; // XXX - implement this (for MOZ_DUMP_PAINTING)
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}
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gl::GLContext* gl() const;
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virtual gfx::IntSize GetSize() const override { return mSize; }
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virtual const char* Name() override { return "GLTextureHost"; }
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protected:
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const GLuint mTexture;
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const GLenum mTarget;
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GLsync mSync;
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const gfx::IntSize mSize;
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const bool mHasAlpha;
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RefPtr<CompositorOGL> mCompositor;
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RefPtr<GLTextureSource> mTextureSource;
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};
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////////////////////////////////////////////////////////////////////////
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// SurfaceTexture
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#ifdef MOZ_WIDGET_ANDROID
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class SurfaceTextureSource : public TextureSource
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, public TextureSourceOGL
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{
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public:
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SurfaceTextureSource(CompositorOGL* aCompositor,
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mozilla::gl::AndroidSurfaceTexture* aSurfTex,
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gfx::SurfaceFormat aFormat,
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GLenum aTarget,
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GLenum aWrapMode,
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gfx::IntSize aSize);
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virtual const char* Name() const override { return "SurfaceTextureSource"; }
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virtual TextureSourceOGL* AsSourceOGL() override { return this; }
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virtual void BindTexture(GLenum activetex,
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gfx::SamplingFilter aSamplingFilter) override;
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virtual bool IsValid() const override;
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virtual gfx::IntSize GetSize() const override { return mSize; }
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virtual gfx::SurfaceFormat GetFormat() const override { return mFormat; }
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virtual gfx::Matrix4x4 GetTextureTransform() override;
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virtual GLenum GetTextureTarget() const override { return mTextureTarget; }
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virtual GLenum GetWrapMode() const override { return mWrapMode; }
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virtual void DeallocateDeviceData() override;
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virtual void SetCompositor(Compositor* aCompositor) override;
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gl::GLContext* gl() const;
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protected:
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RefPtr<CompositorOGL> mCompositor;
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RefPtr<gl::AndroidSurfaceTexture> mSurfTex;
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const gfx::SurfaceFormat mFormat;
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const GLenum mTextureTarget;
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const GLenum mWrapMode;
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const gfx::IntSize mSize;
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};
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class SurfaceTextureHost : public TextureHost
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{
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public:
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SurfaceTextureHost(TextureFlags aFlags,
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mozilla::gl::AndroidSurfaceTexture* aSurfTex,
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gfx::IntSize aSize);
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virtual ~SurfaceTextureHost();
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virtual void DeallocateDeviceData() override;
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virtual void SetCompositor(Compositor* aCompositor) override;
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virtual Compositor* GetCompositor() override { return mCompositor; }
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virtual bool Lock() override;
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virtual void Unlock() override;
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virtual gfx::SurfaceFormat GetFormat() const override;
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virtual bool BindTextureSource(CompositableTextureSourceRef& aTexture) override
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{
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aTexture = mTextureSource;
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return !!aTexture;
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}
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virtual already_AddRefed<gfx::DataSourceSurface> GetAsSurface() override
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{
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return nullptr; // XXX - implement this (for MOZ_DUMP_PAINTING)
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}
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gl::GLContext* gl() const;
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virtual gfx::IntSize GetSize() const override { return mSize; }
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virtual const char* Name() override { return "SurfaceTextureHost"; }
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protected:
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RefPtr<gl::AndroidSurfaceTexture> mSurfTex;
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const gfx::IntSize mSize;
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RefPtr<CompositorOGL> mCompositor;
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RefPtr<SurfaceTextureSource> mTextureSource;
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};
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#endif // MOZ_WIDGET_ANDROID
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////////////////////////////////////////////////////////////////////////
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// EGLImage
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class EGLImageTextureSource : public TextureSource
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, public TextureSourceOGL
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{
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public:
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EGLImageTextureSource(CompositorOGL* aCompositor,
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EGLImage aImage,
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gfx::SurfaceFormat aFormat,
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GLenum aTarget,
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GLenum aWrapMode,
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gfx::IntSize aSize);
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virtual const char* Name() const override { return "EGLImageTextureSource"; }
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virtual TextureSourceOGL* AsSourceOGL() override { return this; }
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virtual void BindTexture(GLenum activetex,
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gfx::SamplingFilter aSamplingFilter) override;
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virtual bool IsValid() const override;
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virtual gfx::IntSize GetSize() const override { return mSize; }
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virtual gfx::SurfaceFormat GetFormat() const override { return mFormat; }
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virtual gfx::Matrix4x4 GetTextureTransform() override;
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virtual GLenum GetTextureTarget() const override { return mTextureTarget; }
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virtual GLenum GetWrapMode() const override { return mWrapMode; }
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// We don't own anything.
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virtual void DeallocateDeviceData() override {}
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virtual void SetCompositor(Compositor* aCompositor) override;
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gl::GLContext* gl() const;
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protected:
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RefPtr<CompositorOGL> mCompositor;
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const EGLImage mImage;
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const gfx::SurfaceFormat mFormat;
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const GLenum mTextureTarget;
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const GLenum mWrapMode;
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const gfx::IntSize mSize;
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};
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class EGLImageTextureHost : public TextureHost
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{
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public:
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EGLImageTextureHost(TextureFlags aFlags,
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EGLImage aImage,
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EGLSync aSync,
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gfx::IntSize aSize,
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bool hasAlpha);
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virtual ~EGLImageTextureHost();
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// We don't own anything.
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virtual void DeallocateDeviceData() override {}
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virtual void SetCompositor(Compositor* aCompositor) override;
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virtual Compositor* GetCompositor() override { return mCompositor; }
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virtual bool Lock() override;
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virtual void Unlock() override;
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virtual gfx::SurfaceFormat GetFormat() const override;
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virtual bool BindTextureSource(CompositableTextureSourceRef& aTexture) override
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{
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aTexture = mTextureSource;
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return !!aTexture;
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}
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virtual already_AddRefed<gfx::DataSourceSurface> GetAsSurface() override
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{
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return nullptr; // XXX - implement this (for MOZ_DUMP_PAINTING)
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}
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gl::GLContext* gl() const;
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virtual gfx::IntSize GetSize() const override { return mSize; }
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virtual const char* Name() override { return "EGLImageTextureHost"; }
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protected:
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const EGLImage mImage;
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const EGLSync mSync;
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const gfx::IntSize mSize;
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const bool mHasAlpha;
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RefPtr<CompositorOGL> mCompositor;
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RefPtr<EGLImageTextureSource> mTextureSource;
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};
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CompositorOGL* AssertGLCompositor(Compositor* aCompositor);
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} // namespace layers
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} // namespace mozilla
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#endif /* MOZILLA_GFX_TEXTUREOGL_H */
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