1 #include <stdio.h>

2 #include <stdlib.h>

3 #include <string.h>

4 #include <errno.h>

5 #include "opengl.h"

6 #include "tex.h"

7 #include "config.h"

8 #include "imago2.h"

9

10 unsigned int load_texture(const char *fname)

11 {

12 int xsz, ysz;

13 unsigned int tex;

14 void *pixels;

15

16 if(!fname) {

17 return 0;

18 }

19 if(!(pixels = img_load_pixels(fname, &xsz, &ysz, IMG_FMT_RGBA32))) {

20 fprintf(stderr, "failed to load image: %s\n", fname);

21 return 0;

22 }

23

24 glGenTextures(1, &tex);

25 glBindTexture(GL_TEXTURE_2D, tex);

26 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);

27 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);

28 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);

29 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);

30 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, xsz, ysz, 0, GL_RGBA, GL_UNSIGNED_BYTE, pixels);

31 img_free_pixels(pixels);

32

33 return tex;

34 }

35

36 void bind_texture(unsigned int tex, int unit)

37 {

38 glActiveTexture(GL_TEXTURE0 + unit);

39

40 #ifndef IPHONE

41 if(tex) {

42 glEnable(GL_TEXTURE_2D);

43 } else {

44 glDisable(GL_TEXTURE_2D);

45 }

46 #endif

47

48 glBindTexture(GL_TEXTURE_2D, tex);

49 }