gecko/gfx/gl/GLReadTexImageHelper.h
jdashg 2a692a2b9c Bug 1066280 - Add TexClient for ShSurf. - r=kamidphish,mattwoodrow
From a7c09c0f17e19fd2254cb1d7a8ddd07b327151ad Mon Sep 17 00:00:00 2001
---
 gfx/2d/HelpersCairo.h                   |   2 +
 gfx/gl/GLContext.cpp                    |   3 +-
 gfx/gl/GLContext.h                      |   2 -
 gfx/gl/GLReadTexImageHelper.cpp         |  21 +--
 gfx/gl/GLReadTexImageHelper.h           |   6 +
 gfx/gl/GLScreenBuffer.h                 |   6 +-
 gfx/gl/ScopedGLHelpers.cpp              |  40 +++++
 gfx/gl/ScopedGLHelpers.h                |  26 ++-
 gfx/gl/SharedSurface.cpp                |  94 +++++++++++
 gfx/gl/SharedSurface.h                  |  19 +++
 gfx/gl/SharedSurfaceIO.h                |   4 +
 gfx/layers/CopyableCanvasLayer.cpp      |   3 +-
 gfx/layers/client/CanvasClient.cpp      | 276 +++++++++++++++++++++++++++++---
 gfx/layers/client/CanvasClient.h        |  34 ++++
 gfx/layers/client/ClientCanvasLayer.cpp |  21 ++-
 gfx/layers/client/ClientCanvasLayer.h   |   9 +-
 gfx/layers/client/TextureClient.cpp     |  35 ++++
 gfx/layers/client/TextureClient.h       |  85 +++++++++-
 gfx/layers/composite/TextureHost.cpp    | 131 ++++++++++++++-
 gfx/layers/composite/TextureHost.h      |  64 ++++++++
 gfx/layers/d3d10/CanvasLayerD3D10.cpp   |   5 +-
 gfx/layers/ipc/LayersSurfaces.ipdlh     |   5 +
 22 files changed, 828 insertions(+), 63 deletions(-)
2014-10-07 21:01:51 -07:00

80 lines
2.6 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* vim: set ts=8 sts=4 et sw=4 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"
#include "nsAutoPtr.h"
#include "mozilla/RefPtr.h"
#include "mozilla/gfx/Types.h"
namespace mozilla {
namespace gfx {
class DataSourceSurface;
}
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);
TemporaryRef<gfx::DataSourceSurface>
ReadBackSurface(GLContext* gl, GLuint aTexture, bool aYInvert, gfx::SurfaceFormat aFormat);
class GLReadTexImageHelper MOZ_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 gfxImageFormat::ARGB32 surface is returned.
* Not implemented yet:
* If GL_RGB is given as the format, a gfxImageFormat::RGB24 surface is returned.
* If GL_LUMINANCE is given as the format, a gfxImageFormat::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.
*/
TemporaryRef<gfx::DataSourceSurface> ReadTexImage(GLuint aTextureId,
GLenum aTextureTarget,
const gfx::IntSize& aSize,
/* ShaderProgramType */ int aShaderProgram,
bool aYInvert = false);
};
}
}
#endif