5 static void calc_buf(
GLSpecBuf *buf,
const PN_stdfloat shininess)
10 inc = 1.0f/SPECULAR_BUFFER_SIZE;
11 for (i = 0; i <= SPECULAR_BUFFER_SIZE; i++) {
12 buf->buf[i] = pow(val, shininess);
18 specbuf_get_buffer(
GLContext *c,
const int shininess_i,
19 const PN_stdfloat shininess)
22 found = oldest = c->specbuf_first;
23 while (found && found->shininess_i != shininess_i) {
24 if (found->last_used < oldest->last_used) {
30 found->last_used = c->specbuf_used_counter++;
33 if (oldest == NULL || c->specbuf_num_buffers < MAX_SPECULAR_BUFFERS) {
36 if (!buf) gl_fatal_error(
"could not allocate specular buffer");
37 c->specbuf_num_buffers++;
38 buf->next = c->specbuf_first;
39 c->specbuf_first = buf;
40 buf->last_used = c->specbuf_used_counter++;
41 buf->shininess_i = shininess_i;
42 calc_buf(buf, shininess);
46 oldest->shininess_i = shininess_i;
47 oldest->last_used = c->specbuf_used_counter++;
48 calc_buf(oldest, shininess);