1 #include <stdio.h>

2 #include "texture.h"

3 #include "image.h"

4 #include "opengl.h"

5

6 #ifndef GL_GENERATE_MIPMAP_SGIS

7 #define GL_GENERATE_MIPMAP_SGIS 0x8191

8 #endif

9

10 unsigned int load_texture(const char *fname)

11 {

12 unsigned int tex;

13 struct image *img;

14

15 if(!(img = load_image(fname))) {

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

17 return 0;

18 }

19

20 glGenTextures(1, &tex);

21 glBindTexture(GL_TEXTURE_2D, tex);

22 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);

23 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);

24 glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP_SGIS, GL_TRUE);

25 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, img->width, img->height, 0, GL_RGB, GL_UNSIGNED_BYTE, img->pixels);

26 free_image(img);

27 return tex;

28 }