- /* Y' = height - (Y - origin_y) = height + origin_y - Y */
- brw_ADD(p,
- dst[1],
- negate(retype(arg0[1], BRW_REGISTER_TYPE_W)),
- brw_imm_d(c->key.origin_y + c->key.drawable_height - 1));
+ if (c->fp->program.OriginUpperLeft) {
+ if (c->fp->program.PixelCenterInteger) {
+ /* Y' = Y */
+ brw_MOV(p,
+ dst[1],
+ retype(arg0[1], BRW_REGISTER_TYPE_W));
+ } else {
+ /* Y' = Y + 0.5 */
+ brw_ADD(p,
+ dst[1],
+ retype(arg0[1], BRW_REGISTER_TYPE_W),
+ brw_imm_f(0.5));
+ }
+ } else {
+ float center_offset = c->fp->program.PixelCenterInteger ? 0.0 : 0.5;
+
+ /* Y' = (height - 1) - Y + center */
+ brw_ADD(p,
+ dst[1],
+ negate(retype(arg0[1], BRW_REGISTER_TYPE_W)),
+ brw_imm_f(c->key.drawable_height - 1 + center_offset));
+ }