main ()
{
int ii = return_1 ();
if (ii != 1)
abort_because ("wrong value returned");
int j = return_arg (42);
if (j != 42)
abort_because ("wrong value returned");
int k = return_sum (-69, 69);
if (k != 0)
abort_because ("wrong value returned");
foo f1 = return_named_foo ();
if (foo::si != 1)
abort_because ("wrong number of foos");
f1.i = 5;
int l = foo_parm_returns_i (f1);
if (l != 5)
abort_because ("l != 5");
foo f2 = foo_parm_returns_foo (f1);
if (foo::si != 2)
abort_because ("wrong number of foos");
if (f2.i != 5)
abort_because ("f2.i != 5");
foo f3 = return_foo ();
if (foo::si != 3)
abort_because ("wrong number of foos");
printf("PASS\n");
return 0;
}
void s3d_gl_load_dds(unsigned *tex_id, const char *path) {
int file_len;
char *file_data = s3d_read_file(path, 0, &file_len);
if(strncmp(file_data, "DDS ", 4)) {
abort_because("%s is not a DDS file.", path);
}
static const int header_len = 128;
if(file_len < header_len) {
abort_because("%s is corrupt.", path);
}
unsigned h = *(unsigned *)(&file_data[12]);
unsigned w = *(unsigned *)(&file_data[16]);
unsigned linear_len = *(unsigned *)(&file_data[20]);
unsigned num_mipmaps = *(unsigned *)(&file_data[28]);
char *fmt = &file_data[84];
unsigned gl_fmt;
unsigned block_len;
if(strncmp(fmt, "DXT1", 4) == 0) {
gl_fmt = GL_COMPRESSED_RGBA_S3TC_DXT1_EXT;
block_len = 8;
}
else
if(strncmp(fmt, "DXT3", 4) == 0) {
gl_fmt = GL_COMPRESSED_RGBA_S3TC_DXT3_EXT;
block_len = 16;
}
else
if(strncmp(fmt, "DXT5", 4) == 0) {
gl_fmt = GL_COMPRESSED_RGBA_S3TC_DXT5_EXT;
block_len = 16;
}
else {
abort_because("%s: Unknown format: %s", path, fmt);
}
unsigned tex_id_;
glGenTextures(1, &tex_id_);
glBindTexture(GL_TEXTURE_2D, tex_id_);
unsigned offset = header_len;
for(int i = 0; i < num_mipmaps && (w || h); ++i) {
unsigned len = ((w + 3) / 4) * ((h + 3) / 4) * block_len;
if(offset + len > file_len) {
abort_because("%s is corrupt.", path);
}
glCompressedTexImage2D(
GL_TEXTURE_2D, i, gl_fmt, w, h, 0, len, file_data + offset
);
offset += len;
w /= 2;
h /= 2;
}
free(file_data);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
if(tex_id) {
*tex_id = tex_id_;
}
}
