| rev |
line source |
|
nuclear@39
|
1 /*
|
|
nuclear@39
|
2 Stereoscopic tunnel for iOS.
|
|
nuclear@39
|
3 Copyright (C) 2011 John Tsiombikas <nuclear@member.fsf.org>
|
|
nuclear@39
|
4
|
|
nuclear@39
|
5 This program is free software: you can redistribute it and/or modify
|
|
nuclear@39
|
6 it under the terms of the GNU General Public License as published by
|
|
nuclear@39
|
7 the Free Software Foundation, either version 3 of the License, or
|
|
nuclear@39
|
8 (at your option) any later version.
|
|
nuclear@39
|
9
|
|
nuclear@39
|
10 This program is distributed in the hope that it will be useful,
|
|
nuclear@39
|
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
nuclear@39
|
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
nuclear@39
|
13 GNU General Public License for more details.
|
|
nuclear@39
|
14
|
|
nuclear@39
|
15 You should have received a copy of the GNU General Public License
|
|
nuclear@39
|
16 along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
nuclear@39
|
17 */
|
|
nuclear@39
|
18
|
|
nuclear@14
|
19 #include <stdio.h>
|
|
nuclear@14
|
20 #include <stdlib.h>
|
|
nuclear@14
|
21 #include <string.h>
|
|
nuclear@14
|
22 #include <errno.h>
|
|
nuclear@14
|
23 #include "opengl.h"
|
|
nuclear@14
|
24 #include "tex.h"
|
|
nuclear@15
|
25 #include "config.h"
|
|
nuclear@26
|
26 #include "imago2.h"
|
|
nuclear@14
|
27
|
|
nuclear@14
|
28 unsigned int load_texture(const char *fname)
|
|
nuclear@14
|
29 {
|
|
nuclear@26
|
30 int xsz, ysz;
|
|
nuclear@14
|
31 unsigned int tex;
|
|
nuclear@26
|
32 void *pixels;
|
|
nuclear@14
|
33
|
|
nuclear@27
|
34 if(!fname) {
|
|
nuclear@27
|
35 return 0;
|
|
nuclear@27
|
36 }
|
|
nuclear@26
|
37 if(!(pixels = img_load_pixels(fname, &xsz, &ysz, IMG_FMT_RGBA32))) {
|
|
nuclear@26
|
38 fprintf(stderr, "failed to load image: %s\n", fname);
|
|
nuclear@14
|
39 return 0;
|
|
nuclear@14
|
40 }
|
|
nuclear@14
|
41
|
|
nuclear@14
|
42 glGenTextures(1, &tex);
|
|
nuclear@14
|
43 glBindTexture(GL_TEXTURE_2D, tex);
|
|
nuclear@14
|
44 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
|
|
nuclear@14
|
45 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
|
|
nuclear@14
|
46 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
|
|
nuclear@14
|
47 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
|
|
nuclear@25
|
48 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, xsz, ysz, 0, GL_RGBA, GL_UNSIGNED_BYTE, pixels);
|
|
nuclear@26
|
49 img_free_pixels(pixels);
|
|
nuclear@14
|
50
|
|
nuclear@14
|
51 return tex;
|
|
nuclear@14
|
52 }
|
|
nuclear@15
|
53
|
|
nuclear@15
|
54 void bind_texture(unsigned int tex, int unit)
|
|
nuclear@15
|
55 {
|
|
nuclear@15
|
56 glActiveTexture(GL_TEXTURE0 + unit);
|
|
nuclear@15
|
57
|
|
nuclear@15
|
58 #ifndef IPHONE
|
|
nuclear@15
|
59 if(tex) {
|
|
nuclear@15
|
60 glEnable(GL_TEXTURE_2D);
|
|
nuclear@15
|
61 } else {
|
|
nuclear@15
|
62 glDisable(GL_TEXTURE_2D);
|
|
nuclear@15
|
63 }
|
|
nuclear@15
|
64 #endif
|
|
nuclear@15
|
65
|
|
nuclear@15
|
66 glBindTexture(GL_TEXTURE_2D, tex);
|
|
nuclear@15
|
67 }
|
