[SER] HitObject accessors DXIL opcodes and check-pass tests (microsoft#7276)

Add the DXIL operations and a passing validation test for:
- HitObject_IsMiss, HitObject_IsHit, HitObject_IsNop
- HitObject_RayFlags, HitObject_RayTMin, HitObject_RayTCurrent
- HitObject_GeometryIndex, HitObject_InstanceIndex, HitObject_InstanceID
- HitObject_PrimitiveIndex, HitObject_HitKind, HitObject_ShaderTableIndex
- HitObject_WorldRayOrigin, HitObject_WorldRayDirection,
- HitObject_ObjectRayOrigin, HitObject_ObjectRayDirection
- HitObject_ObjectToWorld3x4, HitObject_WorldToObject3x4
- HitObject_SetShaderTableIndex, HitObject_LoadLocalRootTableConstant
- HitObject_Attributes

Closes microsoft#7310
DXC SER implementation tracker: microsoft#7214

Author: simoll

include/dxc/DXIL/DxilConstants.h

@@ -503,32 +503,11 @@ enum class OpCode : unsigned {
   ReservedA1 = 260,  // reserved
   ReservedA2 = 261,  // reserved
   ReservedB0 = 262,  // reserved
-  ReservedB10 = 272, // reserved
-  ReservedB11 = 273, // reserved
-  ReservedB12 = 274, // reserved
-  ReservedB13 = 275, // reserved
-  ReservedB14 = 276, // reserved
-  ReservedB15 = 277, // reserved
-  ReservedB16 = 278, // reserved
-  ReservedB17 = 279, // reserved
-  ReservedB18 = 280, // reserved
-  ReservedB19 = 281, // reserved
-  ReservedB20 = 282, // reserved
-  ReservedB21 = 283, // reserved
-  ReservedB22 = 284, // reserved
-  ReservedB23 = 285, // reserved
-  ReservedB24 = 286, // reserved
-  ReservedB25 = 287, // reserved
-  ReservedB26 = 288, // reserved
-  ReservedB27 = 289, // reserved
   ReservedB28 = 290, // reserved
   ReservedB29 = 291, // reserved
   ReservedB30 = 292, // reserved
   ReservedB5 = 267,  // reserved
   ReservedB6 = 268,  // reserved
-  ReservedB7 = 269,  // reserved
-  ReservedB8 = 270,  // reserved
-  ReservedB9 = 271,  // reserved
   ReservedC0 = 293,  // reserved
   ReservedC1 = 294,  // reserved
   ReservedC2 = 295,  // reserved
@@ -914,13 +893,42 @@ enum class OpCode : unsigned {
                                    // operation with a mipmap-level offset
 
   // Shader Execution Reordering
+  HitObject_Attributes = 289,   // Returns the attributes set for this HitObject
   HitObject_FromRayQuery = 263, // Creates a new HitObject representing a
                                 // committed hit from a RayQuery
   HitObject_FromRayQueryWithAttrs =
       264, // Creates a new HitObject representing a committed hit from a
            // RayQuery and committed attributes
+  HitObject_GeometryIndex = 281, // Returns the geometry index committed on hit
+  HitObject_HitKind = 285,       // Returns the HitKind of the hit
+  HitObject_InstanceID = 283,    // Returns the instance id committed on hit
+  HitObject_InstanceIndex = 282, // Returns the instance index committed on hit
+  HitObject_IsHit = 270,  // Returns `true` if the HitObject is a NOP-HitObject
+  HitObject_IsMiss = 269, // Returns `true` if the HitObject represents a miss
+  HitObject_IsNop = 271,  // Returns `true` if the HitObject represents a nop
+  HitObject_LoadLocalRootTableConstant =
+      288, // Returns the root table constant for this HitObject and offset
   HitObject_MakeMiss = 265, // Creates a new HitObject representing a miss
   HitObject_MakeNop = 266,  // Creates an empty nop HitObject
+  HitObject_ObjectRayDirection =
+      278,                          // Returns the ray direction in object space
+  HitObject_ObjectRayOrigin = 277,  // Returns the ray origin in object space
+  HitObject_ObjectToWorld3x4 = 279, // Returns the object to world space
+                                    // transformation matrix in 3x4 form
+  HitObject_PrimitiveIndex =
+      284,                  // Returns the primitive index committed on hit
+  HitObject_RayFlags = 272, // Returns the ray flags set in the HitObject
+  HitObject_RayTCurrent =
+      274,                 // Returns the current T value set in the HitObject
+  HitObject_RayTMin = 273, // Returns the TMin value set in the HitObject
+  HitObject_SetShaderTableIndex =
+      287, // Returns a HitObject with updated shader table index
+  HitObject_ShaderTableIndex =
+      286, // Returns the shader table index set for this HitObject
+  HitObject_WorldRayDirection = 276, // Returns the ray direction in world space
+  HitObject_WorldRayOrigin = 275,    // Returns the ray origin in world space
+  HitObject_WorldToObject3x4 = 280,  // Returns the world to object space
+                                     // transformation matrix in 3x4 form
 
   // Synchronization
   AtomicBinOp = 78,           // performs an atomic operation on two operands
@@ -1297,10 +1305,16 @@ enum class OpCodeClass : unsigned {
   WriteSamplerFeedbackLevel,
 
   // Shader Execution Reordering
+  HitObject_Attributes,
   HitObject_FromRayQuery,
   HitObject_FromRayQueryWithAttrs,
+  HitObject_LoadLocalRootTableConstant,
   HitObject_MakeMiss,
   HitObject_MakeNop,
+  HitObject_SetShaderTableIndex,
+  HitObject_StateMatrix,
+  HitObject_StateScalar,
+  HitObject_StateVector,
 
   // Synchronization
   AtomicBinOp,
@@ -1366,7 +1380,7 @@ enum class OpCodeClass : unsigned {
   NumOpClasses_Dxil_1_7 = 153,
   NumOpClasses_Dxil_1_8 = 174,
 
-  NumOpClasses = 181 // exclusive last value of enumeration
+  NumOpClasses = 187 // exclusive last value of enumeration
 };
 // OPCODECLASS-ENUM:END