gecko-dev/gfx/gl/GLReadTexImageHelper.h

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/* -*- 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/. */
#ifndef GLREADTEXIMAGEHELPER_H_
#define GLREADTEXIMAGEHELPER_H_
#include "GLContextTypes.h"
#include "mozilla/Attributes.h"
#include "nsSize.h"
Bug 1207245 - part 6 - rename nsRefPtr<T> to RefPtr<T>; r=ehsan; a=Tomcat The bulk of this commit was generated with a script, executed at the top level of a typical source code checkout. The only non-machine-generated part was modifying MFBT's moz.build to reflect the new naming. CLOSED TREE makes big refactorings like this a piece of cake. # The main substitution. find . -name '*.cpp' -o -name '*.cc' -o -name '*.h' -o -name '*.mm' -o -name '*.idl'| \ xargs perl -p -i -e ' s/nsRefPtr\.h/RefPtr\.h/g; # handle includes s/nsRefPtr ?</RefPtr</g; # handle declarations and variables ' # Handle a special friend declaration in gfx/layers/AtomicRefCountedWithFinalize.h. perl -p -i -e 's/::nsRefPtr;/::RefPtr;/' gfx/layers/AtomicRefCountedWithFinalize.h # Handle nsRefPtr.h itself, a couple places that define constructors # from nsRefPtr, and code generators specially. We do this here, rather # than indiscriminantly s/nsRefPtr/RefPtr/, because that would rename # things like nsRefPtrHashtable. perl -p -i -e 's/nsRefPtr/RefPtr/g' \ mfbt/nsRefPtr.h \ xpcom/glue/nsCOMPtr.h \ xpcom/base/OwningNonNull.h \ ipc/ipdl/ipdl/lower.py \ ipc/ipdl/ipdl/builtin.py \ dom/bindings/Codegen.py \ python/lldbutils/lldbutils/utils.py # In our indiscriminate substitution above, we renamed # nsRefPtrGetterAddRefs, the class behind getter_AddRefs. Fix that up. find . -name '*.cpp' -o -name '*.h' -o -name '*.idl' | \ xargs perl -p -i -e 's/nsRefPtrGetterAddRefs/RefPtrGetterAddRefs/g' if [ -d .git ]; then git mv mfbt/nsRefPtr.h mfbt/RefPtr.h else hg mv mfbt/nsRefPtr.h mfbt/RefPtr.h fi --HG-- rename : mfbt/nsRefPtr.h => mfbt/RefPtr.h
2015-10-18 05:24:48 +00:00
#include "mozilla/RefPtr.h"
#include "mozilla/gfx/Types.h"
namespace mozilla {
namespace gfx {
class DataSourceSurface;
} // namespace gfx
namespace gl {
// Returns true if the `dest{Format,Type}` are the same as the
// `read{Format,Type}`.
bool GetActualReadFormats(GLContext* gl, GLenum destFormat, GLenum destType,
GLenum* out_readFormat, GLenum* out_readType);
void ReadPixelsIntoDataSurface(GLContext* aGL,
gfx::DataSourceSurface* aSurface);
already_AddRefed<gfx::DataSourceSurface> ReadBackSurface(
GLContext* gl, GLuint aTexture, bool aYInvert, gfx::SurfaceFormat aFormat);
already_AddRefed<gfx::DataSourceSurface> YInvertImageSurface(
gfx::DataSourceSurface* aSurf, uint32_t aStride);
void SwapRAndBComponents(gfx::DataSourceSurface* surf);
class GLReadTexImageHelper final {
// The GLContext is the sole owner of the GLBlitHelper.
GLContext* mGL;
GLuint mPrograms[4];
GLuint TextureImageProgramFor(GLenum aTextureTarget, int aShader);
bool DidGLErrorOccur(const char* str);
public:
explicit GLReadTexImageHelper(GLContext* gl);
~GLReadTexImageHelper();
/**
* Read the image data contained in aTexture, and return it as an
* ImageSurface. If GL_RGBA is given as the format, a
* SurfaceFormat::A8R8G8B8_UINT32 surface is returned. Not implemented yet: If
* GL_RGB is given as the format, a SurfaceFormat::X8R8G8B8_UINT32 surface is
* returned. If GL_LUMINANCE is given as the format, a SurfaceFormat::A8
* surface is returned.
*
* THIS IS EXPENSIVE. It is ridiculously expensive. Only do this
* if you absolutely positively must, and never in any performance
* critical path.
*
* NOTE: aShaderProgram is really mozilla::layers::ShaderProgramType. It is
* passed as int to eliminate including LayerManagerOGLProgram.h here.
*/
already_AddRefed<gfx::DataSourceSurface> ReadTexImage(
GLuint aTextureId, GLenum aTextureTarget, const gfx::IntSize& aSize,
/* ShaderProgramType */ int aShaderProgram, bool aYInvert = false);
bool ReadTexImage(gfx::DataSourceSurface* aDest, GLuint aTextureId,
GLenum aTextureTarget, const gfx::IntSize& aSize,
int aShaderProgram, bool aYInvert = false);
};
} // namespace gl
} // namespace mozilla
#endif