GNU Radio's TEST Package
gl_cmap.h
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1 /*
2  * gl_cmap.h
3  *
4  * OpenGL float texture -> color mapping
5  *
6  * Copyright (C) 2013-2014 Sylvain Munaut
7  *
8  * This program is free software: you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License as published by
10  * the Free Software Foundation, either version 3 of the License, or
11  * (at your option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program. If not, see <http://www.gnu.org/licenses/>.
20  */
21 
22 #ifndef __FOSPHOR_GL_CMAP_H__
23 #define __FOSPHOR_GL_CMAP_H__
24 
25 /*! \defgroup gl/cmap
26  * @{
27  */
28 
29 /*! \file gl_cmap.h
30  * \brief OpenGL float texture to color mapping
31  */
32 
33 #include <stdint.h>
34 
35 #include "gl_platform.h"
36 
37 
38 struct fosphor_gl_cmap_ctx;
39 
44 };
45 
46 
47 struct fosphor_gl_cmap_ctx *fosphor_gl_cmap_init(void);
48 void fosphor_gl_cmap_release(struct fosphor_gl_cmap_ctx *cmap_ctx);
49 
50 void fosphor_gl_cmap_enable(struct fosphor_gl_cmap_ctx *cmap_ctx,
51  GLuint tex_id, GLuint cmap_id,
52  float scale, float offset,
53  enum fosphor_gl_cmap_mode mode);
54 void fosphor_gl_cmap_disable(void);
55 
56 void fosphor_gl_cmap_draw_scale(GLuint cmap_id,
57  float x0, float x1, float y0, float y1);
58 
59 typedef int (*gl_cmap_gen_func_t)(uint32_t *rgba, int N, void *arg);
60 int fosphor_gl_cmap_generate(GLuint *cmap_id, gl_cmap_gen_func_t gfn, void *gfn_arg, int N);
61 
62 
63 /*! @} */
64 
65 #endif /* __FOSPHOR_GL_CMAP_H__ */
fosphor_gl_cmap_release
void fosphor_gl_cmap_release(struct fosphor_gl_cmap_ctx *cmap_ctx)
fosphor_gl_cmap_draw_scale
void fosphor_gl_cmap_draw_scale(GLuint cmap_id, float x0, float x1, float y0, float y1)
fosphor_gl_cmap_enable
void fosphor_gl_cmap_enable(struct fosphor_gl_cmap_ctx *cmap_ctx, GLuint tex_id, GLuint cmap_id, float scale, float offset, enum fosphor_gl_cmap_mode mode)
fosphor_gl_cmap_disable
void fosphor_gl_cmap_disable(void)
gl_platform.h
Wrapper to select proper OpenGL headers for various platforms.
fosphor_gl_cmap_mode
fosphor_gl_cmap_mode
Definition: gl_cmap.h:40
gl_cmap_gen_func_t
int(* gl_cmap_gen_func_t)(uint32_t *rgba, int N, void *arg)
Definition: gl_cmap.h:59
fosphor_gl_cmap_generate
int fosphor_gl_cmap_generate(GLuint *cmap_id, gl_cmap_gen_func_t gfn, void *gfn_arg, int N)
fosphor_gl_cmap_init
struct fosphor_gl_cmap_ctx * fosphor_gl_cmap_init(void)
GL_CMAP_MODE_BICUBIC
Definition: gl_cmap.h:43
GL_CMAP_MODE_NEAREST
Definition: gl_cmap.h:41
GL_CMAP_MODE_BILINEAR
Definition: gl_cmap.h:42