fdo-mirrors/mesa
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/mesa/mesa.git synced 2026-05-09 04:38:03 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

i965: Emit conditional code updates as required for GLSL VS if statements.

Browse source 
Previously, we'd be branching based on whatever condition code happened to be
laying around.
This commit is contained in:
Eric Anholt 2009-08-04 14:13:27 -07:00
parent 011244853b
commit 7007f8b352
1 changed files with 13 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

13
src/mesa/drivers/dri/i965/brw_vs_emit.c
View file

@ -1558,6 +1558,19 @@ void brw_vs_emit(struct brw_vs_compile *c )
"unknown");
}
/* Set the predication update on the last instruction of the native
* instruction sequence.
*
* This would be problematic if it was set on a math instruction,
* but that shouldn't be the case with the current GLSL compiler.
*/
if (inst->CondUpdate) {
struct brw_instruction *hw_insn = &p->store[p->nr_insn - 1];
assert(hw_insn->header.destreg__conditionalmod == 0);
hw_insn->header.destreg__conditionalmod = BRW_CONDITIONAL_NZ;
}
if ((inst->DstReg.File == PROGRAM_OUTPUT)
&& (inst->DstReg.Index != VERT_RESULT_HPOS)
&& c->output_regs[inst->DstReg.Index].used_in_src) {