void reduce_depth(pixel32 *data, XImage *im)
{
- /* since pixel32 is the largest possible pixel size, we can share the
- array*/
int r, g, b;
int x,y;
- pixel16 *p16 = (pixel16*) data;
- unsigned char *p8 = (unsigned char *)data;
+ pixel32 *p32 = (pixel32 *) im->data;
+ pixel16 *p16 = (pixel16 *) im->data;
+ unsigned char *p8 = (unsigned char *)im->data;
switch (im->bits_per_pixel) {
case 32:
if ((render_red_offset != default_red_shift) ||
r = (data[x] >> default_red_shift) & 0xFF;
g = (data[x] >> default_green_shift) & 0xFF;
b = (data[x] >> default_blue_shift) & 0xFF;
- data[x] = (r << render_red_offset) + (g << render_green_offset) +
- (b << render_blue_offset);
+ p32[x] = (r << render_red_offset)
+ + (g << render_green_offset)
+ + (b << render_blue_offset);
}
data += im->width;
+ p32 += im->width;
}
- }
+ } else im->data = data;
break;
case 16:
for (y = 0; y < im->height; y++) {