diff options
Diffstat (limited to 'src/gallium/auxiliary/tgsi/tgsi_exec.c')
| -rw-r--r-- | src/gallium/auxiliary/tgsi/tgsi_exec.c | 61 |
1 files changed, 59 insertions, 2 deletions
diff --git a/src/gallium/auxiliary/tgsi/tgsi_exec.c b/src/gallium/auxiliary/tgsi/tgsi_exec.c index d3ffd4a85f..60ffa188df 100644 --- a/src/gallium/auxiliary/tgsi/tgsi_exec.c +++ b/src/gallium/auxiliary/tgsi/tgsi_exec.c @@ -3094,6 +3094,12 @@ exec_instruction( break; case TGSI_OPCODE_BGNFOR: + assert(mach->LoopCounterStackTop < TGSI_EXEC_MAX_LOOP_NESTING); + for (chan_index = 0; chan_index < 3; chan_index++) { + FETCH( &mach->LoopCounterStack[mach->LoopCounterStackTop].xyzw[chan_index], 0, chan_index ); + } + STORE( &mach->LoopCounterStack[mach->LoopCounterStackTop].xyzw[CHAN_Y], 0, CHAN_X ); + ++mach->LoopCounterStackTop; /* fall-through (for now) */ case TGSI_OPCODE_BGNLOOP: /* push LoopMask and ContMasks */ @@ -3101,10 +3107,58 @@ exec_instruction( mach->LoopStack[mach->LoopStackTop++] = mach->LoopMask; assert(mach->ContStackTop < TGSI_EXEC_MAX_LOOP_NESTING); mach->ContStack[mach->ContStackTop++] = mach->ContMask; + assert(mach->LoopLabelStackTop < TGSI_EXEC_MAX_LOOP_NESTING); + mach->LoopLabelStack[mach->LoopLabelStackTop++] = *pc - 1; break; case TGSI_OPCODE_ENDFOR: - /* fall-through (for now at least) */ + assert(mach->LoopCounterStackTop > 0); + micro_sub( &mach->LoopCounterStack[mach->LoopCounterStackTop - 1].xyzw[CHAN_X], + &mach->LoopCounterStack[mach->LoopCounterStackTop - 1].xyzw[CHAN_X], + &mach->Temps[TEMP_1_I].xyzw[TEMP_1_C] ); + /* update LoopMask */ + if( mach->LoopCounterStack[mach->LoopCounterStackTop - 1].xyzw[CHAN_X].f[0] <= 0) { + mach->LoopMask &= ~0x1; + } + if( mach->LoopCounterStack[mach->LoopCounterStackTop - 1].xyzw[CHAN_X].f[1] <= 0 ) { + mach->LoopMask &= ~0x2; + } + if( mach->LoopCounterStack[mach->LoopCounterStackTop - 1].xyzw[CHAN_X].f[2] <= 0 ) { + mach->LoopMask &= ~0x4; + } + if( mach->LoopCounterStack[mach->LoopCounterStackTop - 1].xyzw[CHAN_X].f[3] <= 0 ) { + mach->LoopMask &= ~0x8; + } + micro_add( &mach->LoopCounterStack[mach->LoopCounterStackTop - 1].xyzw[CHAN_Y], + &mach->LoopCounterStack[mach->LoopCounterStackTop - 1].xyzw[CHAN_Y], + &mach->LoopCounterStack[mach->LoopCounterStackTop - 1].xyzw[CHAN_Z]); + assert(mach->LoopLabelStackTop > 0); + inst = mach->Instructions + mach->LoopLabelStack[mach->LoopLabelStackTop - 1]; + STORE( &mach->LoopCounterStack[mach->LoopCounterStackTop].xyzw[CHAN_Y], 0, CHAN_X ); + /* Restore ContMask, but don't pop */ + assert(mach->ContStackTop > 0); + mach->ContMask = mach->ContStack[mach->ContStackTop - 1]; + UPDATE_EXEC_MASK(mach); + if (mach->ExecMask) { + /* repeat loop: jump to instruction just past BGNLOOP */ + assert(mach->LoopLabelStackTop > 0); + *pc = mach->LoopLabelStack[mach->LoopLabelStackTop - 1] + 1; + } + else { + /* exit loop: pop LoopMask */ + assert(mach->LoopStackTop > 0); + mach->LoopMask = mach->LoopStack[--mach->LoopStackTop]; + /* pop ContMask */ + assert(mach->ContStackTop > 0); + mach->ContMask = mach->ContStack[--mach->ContStackTop]; + assert(mach->LoopLabelStackTop > 0); + --mach->LoopLabelStackTop; + assert(mach->LoopCounterStackTop > 0); + --mach->LoopCounterStackTop; + } + UPDATE_EXEC_MASK(mach); + break; + case TGSI_OPCODE_ENDLOOP: /* Restore ContMask, but don't pop */ assert(mach->ContStackTop > 0); @@ -3112,7 +3166,8 @@ exec_instruction( UPDATE_EXEC_MASK(mach); if (mach->ExecMask) { /* repeat loop: jump to instruction just past BGNLOOP */ - *pc = inst->InstructionExtLabel.Label + 1; + assert(mach->LoopLabelStackTop > 0); + *pc = mach->LoopLabelStack[mach->LoopLabelStackTop - 1] + 1; } else { /* exit loop: pop LoopMask */ @@ -3121,6 +3176,8 @@ exec_instruction( /* pop ContMask */ assert(mach->ContStackTop > 0); mach->ContMask = mach->ContStack[--mach->ContStackTop]; + assert(mach->LoopLabelStackTop > 0); + --mach->LoopLabelStackTop; } UPDATE_EXEC_MASK(mach); break; |