[Autobackout][FunctionalRegression]Revert of change: 882201b: Use Ray Query Return value in Compute Ray Tracing Extension

Modified intel_get_hit_candidate and intel_is_traversal_done functions.

Author: sys-igc

IGC/BiFModule/Headers/bif_flag_controls.h

@@ -38,6 +38,5 @@ BIF_FLAG_CONTROL(int, MaxHWThreadIDPerSubDevice)
 BIF_FLAG_CONTROL(bool, UseAssumeInGetGlobalId)
 BIF_FLAG_CONTROL(int, JointMatrixLoadStoreOpt)
 BIF_FLAG_CONTROL(bool, UseOOBChecks)
-BIF_FLAG_CONTROL(bool, IsRayQueryReturnOptimizationEnabled)
 BIF_FLAG_CONTROL(bool, UseBindlessImage)
 #endif // __BIF_FLAG_CONTROL_H__

IGC/BiFModule/Languages/OpenCL/Raytracing/IBiF_intel_rt_production.cl

@@ -375,23 +375,6 @@ intel_float4x3 intel_get_hit_object_to_world(
 intel_candidate_type_t
 intel_get_hit_candidate(intel_ray_query_t rayquery, intel_hit_type_t hit_type)
 {
-    if (BIF_FLAG_CTRL_GET(IsRayQueryReturnOptimizationEnabled))
-    {
-        rtfence_t fence = __builtin_IB_intel_query_rt_fence(rayquery);
-        uintptr_t fenceInt = (uintptr_t)fence;
-
-        intel_candidate_type_t committedStatus = (fenceInt >> 1) & 0x3;
-        intel_candidate_type_t candidateType = (fenceInt>> 3) & 0x1;
-
-        if (hit_type == intel_hit_type_committed_hit)
-        {
-            return committedStatus - 1;
-        }
-        else if (hit_type == intel_hit_type_potential_hit)
-        {
-            return candidateType;
-        }
-    }
     return MemHit_getLeafType(get_query_hit(rayquery, hit_type)) == NODE_TYPE_QUAD
                ? intel_candidate_type_triangle
                : intel_candidate_type_procedural;
@@ -463,33 +446,13 @@ int intel_get_ray_mask(intel_ray_query_t rayquery, uint bvh_level)
 // a procedural leaf or a non-opaque triangle leaf, and requires shader processing.
 bool intel_is_traversal_done(intel_ray_query_t rayquery)
 {
-    if (BIF_FLAG_CTRL_GET(IsRayQueryReturnOptimizationEnabled))
-    {
-        rtfence_t fence = __builtin_IB_intel_query_rt_fence(rayquery);
-        uintptr_t fenceInt = (uintptr_t)fence;
-
-        bool proceedFurther = (fenceInt & 0x1) != 0;
-
-
-        return !proceedFurther;
-    }
     bool isTraversalDone = MemHit_getDone(get_query_hit(rayquery, intel_hit_type_potential_hit));
     return isTraversalDone;
 }
 
 // if traversal is done one can test for the presence of a committed hit to either invoke miss or closest hit shader
 bool intel_has_committed_hit(intel_ray_query_t rayquery)
 {
-    if (BIF_FLAG_CTRL_GET(IsRayQueryReturnOptimizationEnabled))
-    {
-        rtfence_t fence = __builtin_IB_intel_query_rt_fence(rayquery);
-        uintptr_t fenceInt = (uintptr_t)fence;
-
-        intel_candidate_type_t committedStatus = (fenceInt >> 1) & 0x3;
-
-        return committedStatus != 0;
-
-    }
     return MemHit_getValid(get_query_hit(rayquery, intel_hit_type_committed_hit));
 }
 

IGC/Compiler/Builtins/BIFFlagCtrl/BIFFlagCtrlResolution.cpp

@@ -97,7 +97,6 @@ void BIFFlagCtrlResolution::FillFlagCtrl() {
   }
 
   BIF_FLAG_CTRL_SET(UseOOBChecks, PtrCGC->platform.needsOutOfBoundsBuiltinChecks());
-  BIF_FLAG_CTRL_SET(IsRayQueryReturnOptimizationEnabled, PtrCGC->platform.isRayQueryReturnOptimizationEnabled());
 
   // NOTE: No need to check for UseLegacyBindlessMode,
   //       as it's unrelated to images.

IGC/VectorCompiler/lib/GenXOpts/CMTrans/GenXBIFFlagCtrlResolution.cpp

@@ -94,7 +94,6 @@ void GenXBIFFlagCtrlResolution::FillFlagCtrl() {
   BIF_FLAG_CTRL_SET(UseNativeFP64GlobalAtomicAdd, false);
   BIF_FLAG_CTRL_SET(MaxHWThreadIDPerSubDevice, 1);
   BIF_FLAG_CTRL_SET(UseOOBChecks, false);
-  BIF_FLAG_CTRL_SET(IsRayQueryReturnOptimizationEnabled, false);
   BIF_FLAG_CTRL_SET(UseBindlessImage, false);
 }