From dc1e735bbc6a35d4a1d5c1ec720a7a95c0555f49 Mon Sep 17 00:00:00 2001
From: jsmall-nvidia <jsmall@nvidia.com>
Date: Tue, 8 Oct 2019 08:37:53 -0400
Subject: Feature/ir entry point profile (#1068)

* Split out EntryPointParamDecoration.

* Add profile to EntryPointDecoration.

* WIP for GS handling for GLSL.

* WIP for StreamOut GLSL

* Fixed GLSL geometry output.

* Clean up - remove unneeded/commented out code from the entry point change.

* Use Op nums to identify GeometryTypeDecorations (as opposed to contained enum).
---
 source/slang/slang-emit-hlsl.cpp | 35 ++++++++++++++---------------------
 1 file changed, 14 insertions(+), 21 deletions(-)

(limited to 'source/slang/slang-emit-hlsl.cpp')

diff --git a/source/slang/slang-emit-hlsl.cpp b/source/slang/slang-emit-hlsl.cpp
index a5c4ae088..0ce3a682d 100644
--- a/source/slang/slang-emit-hlsl.cpp
+++ b/source/slang/slang-emit-hlsl.cpp
@@ -222,8 +222,13 @@ void HLSLSourceEmitter::_emitHLSLParameterGroup(IRGlobalParam* varDecl, IRUnifor
 
 void HLSLSourceEmitter::_emitHLSLEntryPointAttributes(IRFunc* irFunc, EntryPointLayout* entryPointLayout)
 {
+    SLANG_UNUSED(entryPointLayout);
+
+    IREntryPointDecoration* entryPointDecor = irFunc->findDecoration<IREntryPointDecoration>();
+    SLANG_ASSERT(entryPointDecor);
+
     auto profile = m_effectiveProfile;
-    auto stage = entryPointLayout->profile.GetStage();
+    auto stage = entryPointDecor->getProfile().GetStage();
 
     if (profile.getFamily() == ProfileFamily::DX)
     {
@@ -668,28 +673,16 @@ void HLSLSourceEmitter::emitSemanticsImpl(IRInst* inst)
 
 void HLSLSourceEmitter::emitSimpleFuncParamImpl(IRParam* param)
 {
-    if (auto layoutDecor = param->findDecoration<IRLayoutDecoration>())
+    if (auto decor = param->findDecoration<IRGeometryPrimitiveTypeDecoration>())
     {
-        Layout* layout = layoutDecor->getLayout();
-        VarLayout* varLayout = as<VarLayout>(layout);
-
-        if (varLayout)
+        switch (decor->op)
         {
-            auto var = varLayout->getVariable();
-
-            if (auto primTypeModifier = var->FindModifier<HLSLGeometryShaderInputPrimitiveTypeModifier>())
-            {
-                if (as<HLSLTriangleModifier>(primTypeModifier))
-                    m_writer->emit("triangle ");
-                else if (as<HLSLPointModifier>(primTypeModifier))
-                    m_writer->emit("point ");
-                else if (as<HLSLLineModifier>(primTypeModifier))
-                    m_writer->emit("line ");
-                else if (as<HLSLLineAdjModifier>(primTypeModifier))
-                    m_writer->emit("lineadj ");
-                else if (as<HLSLTriangleAdjModifier>(primTypeModifier))
-                    m_writer->emit("triangleadj ");
-            }
+            case kIROp_TrianglePrimitiveTypeDecoration:             m_writer->emit("triangle "); break;
+            case kIROp_PointPrimitiveTypeDecoration:                m_writer->emit("point "); break;
+            case kIROp_LinePrimitiveTypeDecoration:                 m_writer->emit("line "); break;
+            case kIROp_LineAdjPrimitiveTypeDecoration:              m_writer->emit("lineadj "); break;
+            case kIROp_TriangleAdjPrimitiveTypeDecoration:          m_writer->emit("triangleadj "); break;
+            default: SLANG_ASSERT(!"Unknown primitive type"); break;
         }
     }
 
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