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glasm: Rework control flow introducing a syntax list

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This commit regresses VertexA shaders, their transformation pass has to
be adapted to the new control flow.
This commit is contained in:
ReinUsesLisp 2021-05-14 00:40:54 -03:00 • committed by ameerj
parent 7ff5851608
commit d54d7de40e
33 changed files with 437 additions and 505 deletions
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33
src/shader_recompiler/backend/spirv/emit_spirv_control_flow.cpp
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@ -7,40 +7,21 @@
namespace Shader::Backend::SPIRV {
void EmitBranch(EmitContext& ctx, Id label) {
ctx.OpBranch(label);
}
void EmitBranchConditional(EmitContext& ctx, Id condition, Id true_label, Id false_label) {
ctx.OpBranchConditional(condition, true_label, false_label);
}
void EmitLoopMerge(EmitContext& ctx, Id merge_label, Id continue_label) {
ctx.OpLoopMerge(merge_label, continue_label, spv::LoopControlMask::MaskNone);
}
void EmitSelectionMerge(EmitContext& ctx, Id merge_label) {
ctx.OpSelectionMerge(merge_label, spv::SelectionControlMask::MaskNone);
}
void EmitReturn(EmitContext& ctx) {
ctx.OpReturn();
}
void EmitJoin(EmitContext&) {
throw NotImplementedException("Join shouldn't be emitted");
}
void EmitUnreachable(EmitContext& ctx) {
ctx.OpUnreachable();
}
void EmitDemoteToHelperInvocation(EmitContext& ctx, Id continue_label) {
void EmitDemoteToHelperInvocation(EmitContext& ctx) {
if (ctx.profile.support_demote_to_helper_invocation) {
ctx.OpDemoteToHelperInvocationEXT();
ctx.OpBranch(continue_label);
} else {
const Id kill_label{ctx.OpLabel()};
const Id impossible_label{ctx.OpLabel()};
ctx.OpSelectionMerge(impossible_label, spv::SelectionControlMask::MaskNone);
ctx.OpBranchConditional(ctx.true_value, kill_label, impossible_label);
ctx.AddLabel(kill_label);
ctx.OpKill();
ctx.AddLabel(impossible_label);
}
}