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i965: Respect CondSwizzle in OPCODE_IF.

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Fixes piglit glsl-vs-if-bool and progs/glsl/twoside, and will likely be
useful for the looping code.

Bug #18992
This commit is contained in:
Eric Anholt 2009-08-04 18:02:31 -07:00
parent 7007f8b352
commit 78c022acd0
1 changed files with 21 additions and 1 deletions
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22
src/mesa/drivers/dri/i965/brw_vs_emit.c
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@ -1265,6 +1265,23 @@ post_vs_emit( struct brw_vs_compile *c,
brw_set_src1(end_inst, brw_imm_d(offset * 16));
}
static uint32_t
get_predicate(uint32_t swizzle)
{
switch (swizzle) {
case SWIZZLE_XXXX:
return BRW_PREDICATE_ALIGN16_REPLICATE_X;
case SWIZZLE_YYYY:
return BRW_PREDICATE_ALIGN16_REPLICATE_Y;
case SWIZZLE_ZZZZ:
return BRW_PREDICATE_ALIGN16_REPLICATE_Z;
case SWIZZLE_WWWW:
return BRW_PREDICATE_ALIGN16_REPLICATE_W;
default:
_mesa_problem("Unexpected predicate: 0x%08x\n", swizzle);
return BRW_PREDICATE_NORMAL;
}
}
/* Emit the vertex program instructions here.
*/
@ -1470,7 +1487,10 @@ void brw_vs_emit(struct brw_vs_compile *c )
break;
case OPCODE_IF:
assert(if_depth < MAX_IF_DEPTH);
if_inst[if_depth++] = brw_IF(p, BRW_EXECUTE_8);
if_inst[if_depth] = brw_IF(p, BRW_EXECUTE_8);
if_inst[if_depth]->header.predicate_control =
get_predicate(inst->DstReg.CondSwizzle);
if_depth++;
break;
case OPCODE_ELSE:
if_inst[if_depth-1] = brw_ELSE(p, if_inst[if_depth-1]);