[branch] and [flatten] support (#2928)

* #include an absolute path didn't work - because paths were taken to always be relative.

* Small fixes and improvements around reflection tool.

* Make PrettyWriter printing a class.

* Add HLSL output support for [flatten] and [branch]

* Handle [branch] on switch.

1 files changed, 20 insertions, 0 deletions

diff --git a/source/slang/slang-emit-hlsl.cpp b/source/slang/slang-emit-hlsl.cpp
index 3f6e79f4a..76300c18b 100644
--- a/source/slang/slang-emit-hlsl.cpp
+++ b/source/slang/slang-emit-hlsl.cpp
@@ -766,6 +766,26 @@ static bool _canEmitExport(const Profile& profile)
     Super::emitFuncDecorationsImpl(func);
 }
 
+void HLSLSourceEmitter::emitIfDecorationsImpl(IRIfElse* ifInst)
+{
+    if (ifInst->findDecorationImpl(kIROp_BranchDecoration))
+    {
+        m_writer->emit("[branch]\n");
+    }
+    else if (ifInst->findDecorationImpl(kIROp_FlattenDecoration))
+    {
+        m_writer->emit("[flatten]\n");
+    }
+}
+
+void HLSLSourceEmitter::emitSwitchDecorationsImpl(IRSwitch* switchInst)
+{
+    if (switchInst->findDecorationImpl(kIROp_BranchDecoration))
+    {
+        m_writer->emit("[branch]\n");
+    }
+}
+
 void HLSLSourceEmitter::emitFuncDecorationImpl(IRDecoration* decoration)
 {
     switch( decoration->getOp() )