From 3501186d387603deddaba91865d235b4b7a7f908 Mon Sep 17 00:00:00 2001
From: Philip Rebohle <philip.rebohle@tu-dortmund.de>
Date: Mon, 5 Mar 2018 14:07:15 +0100
Subject: [PATCH] [dxbc] Added tess level interface variables

---
 src/dxbc/dxbc_compiler.cpp | 32 ++++++++++++++++++++++++++++++--
 src/dxbc/dxbc_compiler.h   | 16 ++++++++++++++--
 2 files changed, 44 insertions(+), 4 deletions(-)

diff --git a/src/dxbc/dxbc_compiler.cpp b/src/dxbc/dxbc_compiler.cpp
index fef2fe29..0540b9a9 100644
--- a/src/dxbc/dxbc_compiler.cpp
+++ b/src/dxbc/dxbc_compiler.cpp
@@ -5001,7 +5001,8 @@ namespace dxvk {
     m_module.enableCapability(spv::CapabilityClipDistance);
     m_module.enableCapability(spv::CapabilityCullDistance);
     
-    // TODO implement
+    m_hs.builtinTessLevelOuter = emitBuiltinTessLevelOuter(spv::StorageClassOutput);
+    m_hs.builtinTessLevelInner = emitBuiltinTessLevelInner(spv::StorageClassOutput);
   }
   
   
@@ -5010,7 +5011,8 @@ namespace dxvk {
     m_module.enableCapability(spv::CapabilityClipDistance);
     m_module.enableCapability(spv::CapabilityCullDistance);
     
-    // TODO implement
+    m_ds.builtinTessLevelOuter = emitBuiltinTessLevelOuter(spv::StorageClassInput);
+    m_ds.builtinTessLevelInner = emitBuiltinTessLevelInner(spv::StorageClassInput);
   }
   
   
@@ -5263,6 +5265,32 @@ namespace dxvk {
     m_entryPointInterfaces.push_back(varId);
     return varId;
   }
+    
+  
+  uint32_t DxbcCompiler::emitBuiltinTessLevelOuter(spv::StorageClass storageClass) {
+    uint32_t id = emitNewBuiltinVariable(
+      DxbcRegisterInfo {
+        { DxbcScalarType::Float32, 0, 4 },
+        storageClass },
+      spv::BuiltInTessLevelOuter,
+      "bTessLevelOuter");
+    
+    m_module.decorate(id, spv::DecorationPatch);
+    return id;
+  }
+  
+  
+  uint32_t DxbcCompiler::emitBuiltinTessLevelInner(spv::StorageClass storageClass) {
+    uint32_t id = emitNewBuiltinVariable(
+      DxbcRegisterInfo {
+        { DxbcScalarType::Float32, 0, 2 },
+        storageClass },
+      spv::BuiltInTessLevelInner,
+      "bTessLevelInner");
+    
+    m_module.decorate(id, spv::DecorationPatch);
+    return id;
+  }
   
   
   DxbcCfgBlock* DxbcCompiler::cfgFindBlock(
diff --git a/src/dxbc/dxbc_compiler.h b/src/dxbc/dxbc_compiler.h
index 01cf214c..1c74d305 100644
--- a/src/dxbc/dxbc_compiler.h
+++ b/src/dxbc/dxbc_compiler.h
@@ -199,8 +199,11 @@ namespace dxvk {
     DxbcCompilerHsPhase currPhaseType   = DxbcCompilerHsPhase::None;
     size_t              currPhaseId     = 0;
     
-    uint32_t            vertexCountIn   = 0;
-    uint32_t            vertexCountOut  = 0;
+    uint32_t vertexCountIn   = 0;
+    uint32_t vertexCountOut  = 0;
+    
+    uint32_t builtinTessLevelOuter = 0;
+    uint32_t builtinTessLevelInner = 0;
     
     DxbcCompilerHsControlPointPhase          cpPhase;
     std::vector<DxbcCompilerHsForkJoinPhase> forkPhases;
@@ -213,6 +216,9 @@ namespace dxvk {
    */
   struct DxbcCompilerDsPart {
     uint32_t functionId = 0;
+    
+    uint32_t builtinTessLevelOuter = 0;
+    uint32_t builtinTessLevelInner = 0;
   };
   
   
@@ -882,6 +888,12 @@ namespace dxvk {
             spv::BuiltIn      builtIn,
       const char*             name);
     
+    uint32_t emitBuiltinTessLevelOuter(
+            spv::StorageClass storageClass);
+    
+    uint32_t emitBuiltinTessLevelInner(
+            spv::StorageClass storageClass);
+    
     ////////////////
     // Misc methods
     DxbcCfgBlock* cfgFindBlock(