Merge pull request #6585 from ameerj/hades

Shader Decompiler Rewrite

1 files changed, 28 insertions, 0 deletions

diff --git a/src/shader_recompiler/backend/spirv/emit_spirv_control_flow.cpp b/src/shader_recompiler/backend/spirv/emit_spirv_control_flow.cpp
new file mode 100644
index 000000000..d33486f28
--- /dev/null
+++ b/src/shader_recompiler/backend/spirv/emit_spirv_control_flow.cpp
@@ -0,0 +1,28 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "shader_recompiler/backend/spirv/emit_spirv.h"
+#include "shader_recompiler/backend/spirv/emit_spirv_instructions.h"
+
+namespace Shader::Backend::SPIRV {
+
+void EmitJoin(EmitContext&) {
+    throw NotImplementedException("Join shouldn't be emitted");
+}
+
+void EmitDemoteToHelperInvocation(EmitContext& ctx) {
+    if (ctx.profile.support_demote_to_helper_invocation) {
+        ctx.OpDemoteToHelperInvocationEXT();
+    } 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);
+    }
+}
+
+} // namespace Shader::Backend::SPIRV