GLSpecBuf *specbuf_get_buffer(GLContext *c, const int shininess_i, const float shininess) { GLSpecBuf *found, *oldest; found = oldest = c->specbuf_first; while (found && found->shininess_i != shininess_i) { if (found->last_used < oldest->last_used) { oldest = found; } found = found->next; } if (found) { found->last_used = c->specbuf_used_counter++; return found; } if (!oldest || c->specbuf_num_buffers < MAX_SPECULAR_BUFFERS) { // create new buffer GLSpecBuf *buf = (GLSpecBuf *)gl_malloc(sizeof(GLSpecBuf)); if (!buf) error("could not allocate specular buffer"); c->specbuf_num_buffers++; buf->next = c->specbuf_first; c->specbuf_first = buf; buf->last_used = c->specbuf_used_counter++; buf->shininess_i = shininess_i; calc_buf(buf, shininess); return buf; } //overwrite the lru buffer oldest->shininess_i = shininess_i; oldest->last_used = c->specbuf_used_counter++; calc_buf(oldest, shininess); return oldest; }
GLSpecBuf * specbuf_get_buffer(GLContext *c, const int shininess_i, const float shininess) { GLSpecBuf *found, *oldest; found = oldest = c->specbuf_first; while (found && found->shininess_i != shininess_i) { if (found->last_used < oldest->last_used) { oldest = found; } found = found->next; } if (found) { /* hey, found one! */ found->last_used = c->specbuf_used_counter++; return found; } if (oldest == NULL || c->specbuf_num_buffers < MAX_SPECULAR_BUFFERS) { /* create new buffer */ GLSpecBuf *buf = gl_malloc(sizeof(GLSpecBuf)); if (!buf) gl_fatal_error("could not allocate specular buffer"); c->specbuf_num_buffers++; buf->next = c->specbuf_first; c->specbuf_first = buf; buf->last_used = c->specbuf_used_counter++; buf->shininess_i = shininess_i; calc_buf(buf, shininess); return buf; } /* overwrite the lru buffer */ /*tgl_trace("overwriting spec buffer :(\n");*/ oldest->shininess_i = shininess_i; oldest->last_used = c->specbuf_used_counter++; calc_buf(oldest, shininess); return oldest; }