1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
|
#include "stb_image.h"
#include "texture.h"
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
int
texture_init(Texture *this, const char *img_path)
{
glGenTextures(1, &this->id);
if (this->id == 0) {
fprintf(stderr, "glGenTextures failed\n");
return -1;
}
stbi_set_flip_vertically_on_load(1);
int width, height, nb_chans;
uint8_t *const data = stbi_load(img_path, &width, &height, &nb_chans, 3);
if (data == NULL) {
fprintf(stderr, "failed to load image '%s'\n", img_path);
texture_deinit(this);
return -1;
}
glBindTexture(GL_TEXTURE_2D, this->id);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height,
0, GL_RGB, GL_UNSIGNED_BYTE, data);
stbi_image_free(data);
glGenerateMipmap(GL_TEXTURE_2D);
return 0;
}
void
texture_deinit(Texture *this)
{
if (this->id) {
glDeleteTextures(1, &this->id);
this->id = 0;
}
}
|
