/***********************************************************************
* Optimize moves and swizzles away:
*/
static void pass0_precalc_mov( struct brw_wm_compile *c,
const struct prog_instruction *inst )
{
const struct prog_dst_register *dst = &inst->DstReg;
GLuint writemask = inst->DstReg.WriteMask;
GLuint i;
/* Get the effect of a MOV by manipulating our register table:
*/
for (i = 0; i < 4; i++) {
if (writemask & (1<<i)) {
pass0_set_fpreg_ref( c, dst->File, dst->Index, i,
get_new_ref(c, inst->SrcReg[0], i, NULL));
}
}
}
/***********************************************************************
* Optimize moves and swizzles away:
*/
static void pass0_precalc_mov( struct brw_wm_compile *c,
const struct prog_instruction *inst )
{
const struct prog_dst_register *dst = &inst->DstReg;
GLuint writemask = inst->DstReg.WriteMask;
struct brw_wm_ref *refs[4];
GLuint i;
/* Get the effect of a MOV by manipulating our register table:
* First get all refs, then assign refs. This ensures that "in-place"
* swizzles such as:
* MOV t, t.xxyx
* are handled correctly. Previously, these two steps were done in
* one loop and the above case was incorrectly handled.
*/
for (i = 0; i < 4; i++) {
refs[i] = get_new_ref(c, inst->SrcReg[0], i, NULL);
}
for (i = 0; i < 4; i++) {
if (writemask & (1 << i)) {
pass0_set_fpreg_ref( c, dst->File, dst->Index, i, refs[i]);
}
}
}