i965: When doing a swizzled kill pixel, don't do redundant channel compares.
This was obvious when looking at the compiled output of ETQW's shaders.
This commit is contained in:
parent
ba541b0769
commit
52cea5090c
|
@ -1110,11 +1110,19 @@ static void emit_kil( struct brw_wm_compile *c,
|
|||
{
|
||||
struct brw_compile *p = &c->func;
|
||||
struct brw_reg r0uw = retype(brw_vec1_grf(0, 0), BRW_REGISTER_TYPE_UW);
|
||||
GLuint i;
|
||||
GLuint i, j;
|
||||
|
||||
/* XXX - usually won't need 4 compares!
|
||||
*/
|
||||
for (i = 0; i < 4; i++) {
|
||||
/* Check if we've already done the comparison for this reg
|
||||
* -- common when someone does KIL TEMP.wwww.
|
||||
*/
|
||||
for (j = 0; j < i; j++) {
|
||||
if (memcmp(&arg0[j], &arg0[i], sizeof(arg0[0])) == 0)
|
||||
break;
|
||||
}
|
||||
if (j != i)
|
||||
continue;
|
||||
|
||||
brw_push_insn_state(p);
|
||||
brw_CMP(p, brw_null_reg(), BRW_CONDITIONAL_GE, arg0[i], brw_imm_f(0));
|
||||
brw_set_predicate_control_flag_value(p, 0xff);
|
||||
|
|
Loading…
Reference in New Issue