diff options
| -rw-r--r-- | src/mesa/pipe/tgsi/exec/tgsi_exec.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/src/mesa/pipe/tgsi/exec/tgsi_exec.c b/src/mesa/pipe/tgsi/exec/tgsi_exec.c index 60abecaef1..edd46100c5 100644 --- a/src/mesa/pipe/tgsi/exec/tgsi_exec.c +++ b/src/mesa/pipe/tgsi/exec/tgsi_exec.c @@ -1980,6 +1980,16 @@ exec_instruction( case TGSI_OPCODE_CAL: /* skip the call if no execution channels are enabled */ if (mach->ExecMask) { + /* do the call */ + + /* push Cond, Loop, Cont stacks */ + assert(mach->CondStackTop < TGSI_EXEC_MAX_COND_NESTING); + mach->CondStack[mach->CondStackTop++] = mach->CondMask; + assert(mach->LoopStackTop < TGSI_EXEC_MAX_LOOP_NESTING); + mach->LoopStack[mach->LoopStackTop++] = mach->LoopMask; + assert(mach->ContStackTop < TGSI_EXEC_MAX_LOOP_NESTING); + mach->ContStack[mach->ContStackTop++] = mach->ContMask; + /* note that PC was already incremented above */ mach->CallStack[mach->CallStackTop++] = *pc; *pc = inst->InstructionExtLabel.Label; @@ -1987,6 +1997,15 @@ exec_instruction( break; case TGSI_OPCODE_RET: + /* XXX examine ExecMask to determine if we should _really_ return */ + /* pop Cond, Loop, Cont stacks */ + assert(mach->CondStackTop > 0); + mach->CondMask = mach->CondStack[--mach->CondStackTop]; + assert(mach->LoopStackTop > 0); + mach->LoopMask = mach->LoopStack[--mach->LoopStackTop]; + assert(mach->ContStackTop > 0); + mach->ContMask = mach->ContStack[--mach->ContStackTop]; + assert(mach->CallStackTop >= 0); if (mach->CallStackTop == 0) { /* XXX error? */ |