зеркало из https://github.com/mozilla/gecko-dev.git
89 строки
3.2 KiB
C++
89 строки
3.2 KiB
C++
/* -*- Mode: c++; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 40; -*- */
|
|
/* 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 GLUploadHelpers_h_
|
|
#define GLUploadHelpers_h_
|
|
|
|
#include "GLDefs.h"
|
|
#include "mozilla/gfx/Types.h"
|
|
#include "nsPoint.h"
|
|
|
|
class nsIntRegion;
|
|
|
|
namespace mozilla {
|
|
|
|
namespace gfx {
|
|
class DataSourceSurface;
|
|
}
|
|
|
|
namespace gl {
|
|
|
|
class GLContext;
|
|
|
|
/**
|
|
* Creates a RGB/RGBA texture (or uses one provided) and uploads the surface
|
|
* contents to it within aSrcRect.
|
|
*
|
|
* aSrcRect.x/y will be uploaded to 0/0 in the texture, and the size
|
|
* of the texture with be aSrcRect.width/height.
|
|
*
|
|
* If an existing texture is passed through aTexture, it is assumed it
|
|
* has already been initialised with glTexImage2D (or this function),
|
|
* and that its size is equal to or greater than aSrcRect + aDstPoint.
|
|
* You can alternatively set the overwrite flag to true and have a new
|
|
* texture memory block allocated.
|
|
*
|
|
* The aDstPoint parameter is ignored if no texture was provided
|
|
* or aOverwrite is true.
|
|
*
|
|
* \param aData Image data to upload.
|
|
* \param aDstRegion Region of texture to upload to.
|
|
* \param aTexture Texture to use, or 0 to have one created for you.
|
|
* \param aOverwrite Over an existing texture with a new one.
|
|
* \param aSrcPoint Offset into aSrc where the region's bound's
|
|
* TopLeft() sits.
|
|
* \param aPixelBuffer Pass true to upload texture data with an
|
|
* offset from the base data (generally for pixel buffer objects),
|
|
* otherwise textures are upload with an absolute pointer to the data.
|
|
* \param aTextureUnit, the texture unit used temporarily to upload the
|
|
* surface. This testure may be overridden, clients should not rely on
|
|
* the contents of this texture after this call or even on this
|
|
* texture unit being active.
|
|
* \return Surface format of this texture.
|
|
*/
|
|
gfx::SurfaceFormat
|
|
UploadImageDataToTexture(GLContext* gl,
|
|
unsigned char* aData,
|
|
int32_t aStride,
|
|
gfx::SurfaceFormat aFormat,
|
|
const nsIntRegion& aDstRegion,
|
|
GLuint& aTexture,
|
|
bool aOverwrite = false,
|
|
bool aPixelBuffer = false,
|
|
GLenum aTextureUnit = LOCAL_GL_TEXTURE0,
|
|
GLenum aTextureTarget = LOCAL_GL_TEXTURE_2D);
|
|
|
|
/**
|
|
* Convenience wrapper around UploadImageDataToTexture for gfx::DataSourceSurface's.
|
|
*/
|
|
gfx::SurfaceFormat
|
|
UploadSurfaceToTexture(GLContext* gl,
|
|
gfx::DataSourceSurface *aSurface,
|
|
const nsIntRegion& aDstRegion,
|
|
GLuint& aTexture,
|
|
bool aOverwrite = false,
|
|
const gfx::IntPoint& aSrcPoint = gfx::IntPoint(0, 0),
|
|
bool aPixelBuffer = false,
|
|
GLenum aTextureUnit = LOCAL_GL_TEXTURE0,
|
|
GLenum aTextureTarget = LOCAL_GL_TEXTURE_2D);
|
|
|
|
bool CanUploadSubTextures(GLContext* gl);
|
|
bool CanUploadNonPowerOfTwo(GLContext* gl);
|
|
|
|
}
|
|
}
|
|
|
|
#endif
|