// -------------------------------------------------------------------------------------
// Initialize interface variables to assembler.
// These things used to be constants. This routine is now (10/6/93) getting called for
// every texture map. It should get called whenever the window changes, or, preferably,
// not at all. I'm pretty sure these variables are only being used for range checking.
void init_interface_vars_to_assembler(void)
{
grs_bitmap *bp;
static int callclose = 1;
bp = &grd_curcanv->cv_bitmap;
Assert(bp!=NULL);
Assert(bp->bm_data!=NULL);
if (y_pointers != NULL)
{
d_free(y_pointers);
y_pointers = NULL;
}
MALLOC(y_pointers, int, bp->bm_h);
// If bytes_per_row has changed, create new table of pointers.
if (bytes_per_row != (int) bp->bm_rowsize) {
int y_val, i;
bytes_per_row = (int) bp->bm_rowsize;
y_val = 0;
for (i=0; i<bp->bm_h; i++) {
y_pointers[i] = y_val;
y_val += bytes_per_row;
}
}
write_buffer = (unsigned char *) bp->bm_data;
window_left = 0;
window_right = (int) bp->bm_w-1;
window_top = 0;
window_bottom = (int) bp->bm_h-1;
Window_clip_left = window_left;
Window_clip_right = window_right;
Window_clip_top = window_top;
Window_clip_bot = window_bottom;
window_width = bp->bm_w;
window_height = bp->bm_h;
if (!Fix_recip_table_computed)
init_fix_recip_table();
if (callclose)
{
callclose=0;
atexit(free_ypointers);
}
}
// -------------------------------------------------------------------------------------
// Initialize interface variables to assembler.
// These things used to be constants. This routine is now (10/6/93) getting called for
// every texture map. It should get called whenever the window changes, or, preferably,
// not at all. I'm pretty sure these variables are only being used for range checking.
void init_interface_vars_to_assembler(void)
{
grs_bitmap *bp;
bp = &grd_curcanv->cv_bitmap;
Assert(bp!=NULL);
Assert(bp->bm_data!=NULL);
Assert(bp->bm_h <= MAX_Y_POINTERS);
// If bytes_per_row has changed, create new table of pointers.
if (bytes_per_row != (int) bp->bm_rowsize) {
int y_val, i;
bytes_per_row = (int) bp->bm_rowsize;
y_val = 0;
for (i=0; i<MAX_Y_POINTERS; i++) {
y_pointers[i] = y_val;
y_val += bytes_per_row;
}
}
write_buffer = (unsigned char *) bp->bm_data;
window_left = 0;
window_right = (int) bp->bm_w-1;
window_top = 0;
window_bottom = (int) bp->bm_h-1;
Window_clip_left = window_left;
Window_clip_right = window_right;
Window_clip_top = window_top;
Window_clip_bot = window_bottom;
window_width = bp->bm_w;
window_height = bp->bm_h;
if (!Fix_recip_table_computed)
init_fix_recip_table();
}
