[dxbc] Added interpolation mode decoder

src/dxbc/dxbc_compiler.cpp

@@ -96,9 +96,18 @@ namespace dxvk {
         if (hasSv)
           sv = ins.readEnum<DxbcSystemValue>(op.length());
         
+        const bool hasInterpolationMode =
+            opcode == DxbcOpcode::DclInputPs
+         || opcode == DxbcOpcode::DclInputPsSiv;
+        
+        DxbcInterpolationMode im = DxbcInterpolationMode::Undefined;
+        
+        if (hasInterpolationMode)
+          im = op.token().interpolationMode();
+        
         m_gen->dclInterfaceVar(
           op.token().type(), regId, regDim,
-          op.token().componentMask(), sv);
+          op.token().componentMask(), sv, im);
       } break;
       
       default:

src/dxbc/dxbc_decoder.h

@@ -287,6 +287,17 @@ namespace dxvk {
       return DxbcComponentMask(bit::extract(m_token, 4, 5));
     }
     
+    /**
+     * \brief Interpolatin mode
+     * 
+     * Used by input declarations in pixel shaders.
+     * Undefined for all other instructions.
+     */
+    DxbcInterpolationMode interpolationMode() const {
+      return static_cast<DxbcInterpolationMode>(
+        bit::extract(m_token, 11, 14));
+    }
+    
     /**
      * \brief Operand type
      * 

src/dxbc/dxbc_enums.h

@@ -415,6 +415,18 @@ namespace dxvk {
   };
   
   
+  enum class DxbcInterpolationMode : uint32_t {
+    Undefined                   = 0,
+    Constant                    = 1,
+    Linear                      = 2,
+    LinearCentroid              = 3,
+    LinearNoPerspective         = 4,
+    LinearNoperspectiveCentroid = 5,
+    LinearSample                = 6,
+    LinearNoPerspectiveSample   = 7,
+  };
+  
+  
   enum class DxbcGlobalFlag : uint32_t {
     RefactoringAllowed    = 0,
     DoublePrecision       = 1,

src/dxbc/gen/dxbc_gen_common.h

@@ -99,7 +99,8 @@ namespace dxvk {
             uint32_t              regId,
             uint32_t              regDim,
             DxbcComponentMask     regMask,
-            DxbcSystemValue   sv) = 0;
+            DxbcSystemValue       sv,
+            DxbcInterpolationMode im) = 0;
     
     virtual DxbcPointer ptrInterfaceVar(
             DxbcOperandType       regType,

src/dxbc/gen/dxbc_gen_pixel.cpp

@@ -60,7 +60,8 @@ namespace dxvk {
           uint32_t              regId,
           uint32_t              regDim,
           DxbcComponentMask     regMask,
-          DxbcSystemValue   sv) {
+          DxbcSystemValue       sv,
+          DxbcInterpolationMode im) {
     switch (regType) {
       case DxbcOperandType::Input: {
         if (m_vRegs.at(regId).valueId == 0) {
@@ -140,6 +141,7 @@ namespace dxvk {
       spv::ExecutionModelFragment, "main",
       m_entryPointInterfaces.size(),
       m_entryPointInterfaces.data());
+    m_module.setOriginUpperLeft(m_entryPointId);
     m_module.setDebugName(m_entryPointId, "main");
     
     return m_module.compile();

src/dxbc/gen/dxbc_gen_pixel.h

@@ -20,7 +20,8 @@ namespace dxvk {
             uint32_t              regId,
             uint32_t              regDim,
             DxbcComponentMask     regMask,
-            DxbcSystemValue   sv);
+            DxbcSystemValue       sv,
+            DxbcInterpolationMode im);
     
     DxbcPointer ptrInterfaceVar(
             DxbcOperandType       regType,

src/dxbc/gen/dxbc_gen_vertex.cpp

@@ -66,7 +66,8 @@ namespace dxvk {
           uint32_t              regId,
           uint32_t              regDim,
           DxbcComponentMask     regMask,
-          DxbcSystemValue   sv) {
+          DxbcSystemValue       sv,
+          DxbcInterpolationMode im) {
     switch (regType) {
       case DxbcOperandType::Input: {
         if (m_vRegs.at(regId).valueId == 0) {

src/dxbc/gen/dxbc_gen_vertex.h

@@ -20,7 +20,8 @@ namespace dxvk {
             uint32_t              regId,
             uint32_t              regDim,
             DxbcComponentMask     regMask,
-            DxbcSystemValue   sv);
+            DxbcSystemValue       sv,
+            DxbcInterpolationMode im);
     
     DxbcPointer ptrInterfaceVar(
             DxbcOperandType       regType,

src/spirv/spirv_module.cpp

@@ -95,6 +95,14 @@ namespace dxvk {
   }
   
   
+  void SpirvModule::setOriginUpperLeft(
+          uint32_t                entryPointId) {
+    m_execModeInfo.putIns (spv::OpExecutionMode, 3);
+    m_execModeInfo.putWord(entryPointId);
+    m_execModeInfo.putWord(spv::ExecutionModeOriginUpperLeft);
+  }
+  
+  
   void SpirvModule::setDebugName(
           uint32_t                expressionId,
     const char*                   debugName) {

src/spirv/spirv_module.h

@@ -46,6 +46,9 @@ namespace dxvk {
             uint32_t                y,
             uint32_t                z);
     
+    void setOriginUpperLeft(
+            uint32_t                entryPointId);
+    
     void setDebugName(
             uint32_t                expressionId,
       const char*                   debugName);