r300: Remove broken optimization in rc_transform_KILL
The logic was reversed so this was not only not working but it was also removing random instructions around. The special IF-KILP-ENDIF case this optimization was targeting is already transformed to KILL_IF in the TGSI, so just remove this altogether. This fixes piglit glsl-fs-discard-04 v2: Update the comment as well Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/343 Signed-off-by: Pavel Ondračka <pavel.ondracka@gmail.com> Reviewed-by: Filip Gawin <filip.gawin@zoho.com> Reviewed-by: Marek Olšák <marek.olsak@amd.com> Reviewed-by: Emma Anholt <emma@anholt.net> Cc: mesa-stable Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14378>
This commit is contained in:
parent
496947d0d4
commit
96ad4f6437
|
@ -1127,12 +1127,6 @@ int radeonTransformDeriv(struct radeon_compiler* c,
|
|||
*
|
||||
* === OR ===
|
||||
*
|
||||
* IF Temp[0].x -\
|
||||
* KILL - > KIL -abs(Temp[0].x)
|
||||
* ENDIF -/
|
||||
*
|
||||
* === OR ===
|
||||
*
|
||||
* IF Temp[0].x -> IF Temp[0].x
|
||||
* ... -> ...
|
||||
* ELSE -> ELSE
|
||||
|
@ -1177,21 +1171,6 @@ void rc_transform_KILL(struct radeon_compiler * c, void *user)
|
|||
* block, because -0.0 is considered negative. */
|
||||
inst->U.I.SrcReg[0] =
|
||||
negate(absolute(if_inst->U.I.SrcReg[0]));
|
||||
|
||||
if (inst->Prev->U.I.Opcode != RC_OPCODE_IF
|
||||
&& inst->Next->U.I.Opcode != RC_OPCODE_ENDIF) {
|
||||
|
||||
/* Optimize the special case:
|
||||
* IF Temp[0].x
|
||||
* KILP
|
||||
* ENDIF
|
||||
*/
|
||||
|
||||
/* Remove IF */
|
||||
rc_remove_instruction(inst->Prev);
|
||||
/* Remove ENDIF */
|
||||
rc_remove_instruction(inst->Next);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
Loading…
Reference in New Issue