90f106117f
This exposes CoglTextureRectangle in the experimental cogl 2.0 api. For now we just expose a single constructor; cogl_texture_rectangle_new_with_size() but we can add more later. This is part of going work to improve our texture apis with more emphasis on providing low-level access to the varying semantics of different texture types understood by the gpu instead of only trying to present a lowest common denominator api. CoglTextureRectangle is notably useful for never being restricted to power of two sizes and for being sampled with non-normalized texture coordinates which can be convenient for use a lookup tables in glsl due to not needing separate uniforms for mapping normalized coordinates to texels. Unlike CoglTexture2D though rectangle textures can't have a mipmap and they only support the _CLAMP_TO_EDGE wrap mode. Applications wanting to use CoglTextureRectangle should first check cogl_has_feature (COGL_FEATURE_ID_TEXTURE_RECTANGLE). Reviewed-by: Neil Roberts <neil@linux.intel.com>
64 lines
2 KiB
C
64 lines
2 KiB
C
/*
|
|
* Cogl
|
|
*
|
|
* An object oriented GL/GLES Abstraction/Utility Layer
|
|
*
|
|
* Copyright (C) 2009 Intel Corporation.
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
*
|
|
*/
|
|
|
|
#ifndef __COGL_TEXTURE_RECTANGLE_H
|
|
#define __COGL_TEXTURE_RECTANGLE_H
|
|
|
|
#include "cogl-pipeline-private.h"
|
|
#include "cogl-texture-private.h"
|
|
|
|
struct _CoglTextureRectangle
|
|
{
|
|
CoglTexture _parent;
|
|
|
|
/* The internal format of the GL texture represented as a
|
|
CoglPixelFormat */
|
|
CoglPixelFormat format;
|
|
/* The internal format of the GL texture represented as a GL enum */
|
|
GLenum gl_format;
|
|
/* The texture object number */
|
|
GLuint gl_texture;
|
|
int width;
|
|
int height;
|
|
GLenum min_filter;
|
|
GLenum mag_filter;
|
|
GLint wrap_mode_s;
|
|
GLint wrap_mode_t;
|
|
gboolean is_foreign;
|
|
};
|
|
|
|
GQuark
|
|
_cogl_handle_texture_rectangle_get_type (void);
|
|
|
|
CoglTextureRectangle *
|
|
_cogl_texture_rectangle_new_from_bitmap (CoglBitmap *bmp,
|
|
CoglTextureFlags flags,
|
|
CoglPixelFormat internal_format);
|
|
|
|
CoglTextureRectangle *
|
|
_cogl_texture_rectangle_new_from_foreign (GLuint gl_handle,
|
|
GLuint width,
|
|
GLuint height,
|
|
CoglPixelFormat format);
|
|
|
|
#endif /* __COGL_TEXTURE_RECTANGLE_H */
|