Make the "hack" sampler explicit for now

- We use this to work around the fact that, e.g., `Texture2D.Load` doesn't take a sampler, but the equivalent GLSL operation `texelFetch` requires one

- Previously we tried to hide the sampler from the user, hoping that glslang would drop it and we could just ignore it, but that doesn't work

- For now we'll go ahead and explicitly show the sampler in the reflection info so that an app can react appropriately

- We also generate a unique binding for the sampler, instead of the old behavior that fixed it with `binding = 0`
  - We still fix it with `set = 0`, so it might still surprise users

1 files changed, 7 insertions, 0 deletions

diff --git a/tests/reflection/cross-compile.slang.expected b/tests/reflection/cross-compile.slang.expected
index 3bb730f66..3a8bea41e 100644
--- a/tests/reflection/cross-compile.slang.expected
+++ b/tests/reflection/cross-compile.slang.expected
@@ -42,6 +42,13 @@ standard output = {
                     ]
                 }
             }
+        },
+        {
+            "name": "SLANG_hack_samplerForTexelFetch",
+            "binding": {"kind": "descriptorTableSlot", "index": 3},
+            "type": {
+                "kind": "samplerState"
+            }
         }
     ]
 }