+void TrueRenderControl::reduceDepth(XImage *im, pixel32 *data) const
+{
+ int r, g, b;
+ int x,y;
+ pixel16 *p = (pixel16 *)data;
+ switch (im->bits_per_pixel) {
+ case 32:
+ return;
+ case 16:
+ for (y = 0; y < im->height; y++) {
+ for (x = 0; x < im->width; x++) {
+ r = (data[x] >> 16) & 0xFF;
+ r = r >> _red_shift;
+ g = (data[x] >> 8) & 0xFF;
+ g = g >> _green_shift;
+ b = data[x] & 0xFF;
+ b = b >> _blue_shift;
+ p[x] = (r << _red_offset) + (g << _green_offset) + (b << _blue_offset);
+ }
+ data += im->width;
+ p += im->bytes_per_line/2;
+ }
+ break;
+ default:
+ printf("your bit depth is currently unhandled\n");
+ }
+}
+