shader: evaluate scalar branch decisions across the complete guest wave

This commit is contained in:
Claxten
2026-10-07 19:18:50 +04:00
committed by nmzik
parent b96871e2bf
commit a8beac190f
4 changed files with 68 additions and 25 deletions
@@ -280,6 +280,10 @@ Emitter::SpirvRequirements Emitter::AnalyzeProgramRequirements(const IR::Program
switch (inst.GetOpcode()) {
case IR::ValueOpcode::StoreCompletion: requirements.subgroup_barrier = true; break;
case IR::ValueOpcode::BvhIntersect: requirements.bvh = true; break;
case IR::ValueOpcode::ConditionRef:
requirements.subgroup_ballot |=
inst.Flags<CFG::BranchCondition>() != CFG::BranchCondition::ScalarInstruction;
break;
case IR::ValueOpcode::Ballot: requirements.subgroup_ballot = true; break;
case IR::ValueOpcode::DppMoveU32:
case IR::ValueOpcode::ReadFirstLane: