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
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
#include <stdio.h>
#include <stdint.h>
#include <string.h>
/* Write GL_RGB16F into glInternalFormat */
int
main(int argc, char* argv[])
{
/* Open up the file */
const char *filename = argv[1];
int compressed = strstr(filename, "decompressed") == NULL;
int unorm8s = strstr(filename, "ldrs") != NULL;
int hdr = strstr(filename, "hdr") != NULL;
FILE* file = fopen(filename, "r+b");
if (file == NULL)
printf("File not opened\n");
#define GL_UNSIGNED_BYTE 0x1401
#define GL_HALF_FLOAT 0x140B
#define GL_RGB 0x1907
#define GL_RGBA 0x1908
#define GL_LUMINANCE 0x1909
#define GL_LUMINANCE_ALPHA 0x190A
#define GL_RGBA8 0x8058
#define GL_RGBA16F 0x881A
#define GL_RGB16F 0x881B
#define GL_SRGB8_ALPHA8 0x8C43
#define GL_SRGB8 0x8C41
uint32_t d_hdr[5] = {GL_HALF_FLOAT,
2,
GL_RGB,
GL_RGB16F,
GL_RGB};
uint32_t d_linear[5] = {GL_HALF_FLOAT,
2,
GL_RGBA,
GL_RGBA16F,
GL_RGBA};
uint32_t d_srgb[5] = {GL_UNSIGNED_BYTE,
1,
GL_RGB,
GL_SRGB8,
GL_RGB};
uint32_t *packet = NULL;
if (hdr) {
packet = d_hdr;
fseek(file, 4*sizeof(uint32_t), SEEK_SET); // glType
fwrite(packet, 5*sizeof(uint32_t), 1, file);
puts("HDR");
} else if (unorm8s) {
packet = d_srgb;
fseek(file, 4*sizeof(uint32_t), SEEK_SET); // glType
fwrite(packet, 5*sizeof(uint32_t), 1, file);
puts("SRGB");
} else {
packet = d_linear;
fseek(file, 4*sizeof(uint32_t), SEEK_SET); // glType
fwrite(packet, 5*sizeof(uint32_t), 1, file);
puts("LINEAR");
}
/* Close the file */
if (file != NULL)
fclose(file);
return 0;
}
|
