Shader Execution Reordering for VK (#2491)

* #include an absolute path didn't work - because paths were taken to always be relative.

* Fixes around MakeMiss.

* Add preliminary support for HitObject::MakeHit.

* Make Nop.

* Add HitObject::TraceRay.

* HitObject::Invoke for VK.

* Remove line numbers from SER GLSL output.

* Add support for HitObjectAttributes
Add support for GLSL HitObject.GetAttributes<T>()
Simplified code around getting locations.

* Be more explicit about requiring GL_EXT_ray_tracing in SER.

* Split out LocationTracker from CLikeEmitter.

* Small doc improvements.

* Add motion ray support.

* Use inlining to get correct GLSL behavior around hitObjectNV.

* Add assignment HitObject test.

* Add a HitObject array test. Shows doesn't work correctly for VK/GLSL.

* Add call to `hitObjectGetAttributesNV` before getting attributes.

1 files changed, 9 insertions, 0 deletions

diff --git a/source/slang/slang-check-modifier.cpp b/source/slang/slang-check-modifier.cpp
index b8ac21e2d..aa28571a7 100644
--- a/source/slang/slang-check-modifier.cpp
+++ b/source/slang/slang-check-modifier.cpp
@@ -604,6 +604,15 @@ namespace Slang
 
             callablePayloadAttr->location = (int32_t)val->value;
         }
+        else if (auto hitObjectAttributesAttr = as<VulkanHitObjectAttributesAttribute>(attr))
+        {
+            SLANG_ASSERT(attr->args.getCount() == 1);
+            auto val = checkConstantIntVal(attr->args[0]);
+
+            if (!val) return false;
+
+            hitObjectAttributesAttr->location = (int32_t)val->value;
+        }
         else if (auto forwardDerivativeAttr = as<ForwardDerivativeAttribute>(attr))
         {
             SLANG_ASSERT(attr->args.getCount() == 1);