Implement raytracing extension(s); resolves #3560 for GLSL & SPIR-V targets (#3675)

The following PR implements raytracing extensions (GLSL_EXT_ray_tracing, GLSL_EXT_ray_query, GLSL_NV_shader_invocation_reorder & GLSL_NV_ray_tracing_motion_blur); for GLSL & SPIR-V targets. Fully implements all functions, built-in variables, & syntax; resolves #3560 for GLSL & SPIR-V Targets.

notes of worth:

* __rayPayloadFromLocation, __rayAttributeFromLocation, and __rayCallableFromLocation, were added as SPIR-V Intrinsics to refer to location's of raytracing objects in SPIR-V for when using GLSL syntax.

1 files changed, 5 insertions, 1 deletions

diff --git a/source/slang/slang-emit.cpp b/source/slang/slang-emit.cpp
index 43f54d04f..ee38996e6 100644
--- a/source/slang/slang-emit.cpp
+++ b/source/slang/slang-emit.cpp
@@ -17,6 +17,7 @@
 #include "slang-ir-defunctionalization.h"
 #include "slang-ir-dll-export.h"
 #include "slang-ir-dll-import.h"
+#include "slang-ir-early-raytracing-intrinsic-simplification.h"
 #include "slang-ir-eliminate-phis.h"
 #include "slang-ir-eliminate-multilevel-break.h"
 #include "slang-ir-entry-point-uniforms.h"
@@ -242,7 +243,7 @@ Result linkAndOptimizeIR(
     // If the user specified the flag that they want us to dump
     // IR, then do it here, for the target-specific, but
     // un-specialized IR.
-    dumpIRIfEnabled(codeGenContext, irModule);
+    dumpIRIfEnabled(codeGenContext, irModule, "POST IR VALIDATION");
 
     if(!isKhronosTarget(targetRequest))
         lowerGLSLShaderStorageBufferObjectsToStructuredBuffers(irModule, sink);
@@ -1038,6 +1039,9 @@ Result linkAndOptimizeIR(
         }
     }
 
+    replaceLocationIntrinsicsWithRaytracingObject(targetProgram, irModule, sink);
+    validateIRModuleIfEnabled(codeGenContext, irModule);
+
     // Run a final round of simplifications to clean up unused things after phi-elimination.
     simplifyNonSSAIR(targetProgram, irModule, IRSimplificationOptions::getFast());