Fix 7441: CUDA boolean vector layout to use 1-byte elements (#7862)

* Fix 7441: CUDA boolean vector layout to use 1-byte elements

Boolean vectors (bool1, bool2, bool3, bool4) were incorrectly implemented
as integer-based types using 4 bytes per element instead of actual 1-byte
boolean elements on CUDA targets.

Changes:
- Update CUDA prelude to define boolean vectors as structs with bool fields
  instead of typedef aliases to integer vectors
- Implement CUDALayoutRulesImpl::GetVectorLayout to use 1-byte alignment
  for boolean vectors, matching actual CUDA memory layout behavior
- Update make_bool functions to populate struct fields correctly

This ensures boolean vectors have the same memory layout as bool[4] arrays:
- bool1: 1 byte (was 4 bytes)
- bool2: 2 bytes (was 8 bytes)
- bool3: 3 bytes (was 12 bytes)
- bool4: 4 bytes (was 16 bytes)

Fixes memory layout mismatch between Slang reflection API and actual
CUDA compilation, achieving 75% memory savings for boolean vector usage.

* Fix CI issues -

Add and update associated functions and operators

* Make boolX same as uchar

* Use align construct on struct for boolX

* Improve Test case for robust alignment checks

* Formatting

* Disable selected slangpy tests

* add metal check which is slightly different than cuda

* Test-1

* Test-2

* Test-3

* Test-4

* ReflectionChange

* cleanup and update

* _slang_select with plain bool is needed for reverse-loop-checkpoint-test

4 files changed, 21 insertions, 21 deletions

diff --git a/tests/reflection/ptr/ptr-generic.slang.expected b/tests/reflection/ptr/ptr-generic.slang.expected
index e2473db42..1a4c8acfa 100644
--- a/tests/reflection/ptr/ptr-generic.slang.expected
+++ b/tests/reflection/ptr/ptr-generic.slang.expected
@@ -6,7 +6,7 @@ standard output = {
     "parameters": [
         {
             "name": "genericPtr",
-            "binding": {"kind": "uniform", "offset": 0, "size": 8},
+            "binding": {"kind": "uniform", "offset": 0, "size": 8, "elementStride": 0},
             "type": {
                 "kind": "pointer",
                 "valueType": "GenericStruct"
@@ -14,7 +14,7 @@ standard output = {
         },
         {
             "name": "outputBuffer",
-            "binding": {"kind": "uniform", "offset": 8, "size": 16},
+            "binding": {"kind": "uniform", "offset": 8, "size": 16, "elementStride": 0},
             "type": {
                 "kind": "resource",
                 "baseShape": "structuredBuffer",
diff --git a/tests/reflection/ptr/ptr-global.slang.expected b/tests/reflection/ptr/ptr-global.slang.expected
index 1a6c15a7e..d040027d5 100644
--- a/tests/reflection/ptr/ptr-global.slang.expected
+++ b/tests/reflection/ptr/ptr-global.slang.expected
@@ -6,7 +6,7 @@ standard output = {
     "parameters": [
         {
             "name": "inputBuffer",
-            "binding": {"kind": "uniform", "offset": 0, "size": 16},
+            "binding": {"kind": "uniform", "offset": 0, "size": 16, "elementStride": 0},
             "type": {
                 "kind": "resource",
                 "baseShape": "structuredBuffer",
@@ -21,7 +21,7 @@ standard output = {
                                 "kind": "pointer",
                                 "valueType": "int"
                             },
-                            "binding": {"kind": "uniform", "offset": 0, "size": 8}
+                            "binding": {"kind": "uniform", "offset": 0, "size": 8, "elementStride": 0}
                         },
                         {
                             "name": "regularGlobal2",
@@ -29,7 +29,7 @@ standard output = {
                                 "kind": "pointer",
                                 "valueType": "int"
                             },
-                            "binding": {"kind": "uniform", "offset": 8, "size": 8}
+                            "binding": {"kind": "uniform", "offset": 8, "size": 8, "elementStride": 0}
                         },
                         {
                             "name": "regularGlobal3",
@@ -37,7 +37,7 @@ standard output = {
                                 "kind": "scalar",
                                 "scalarType": "int32"
                             },
-                            "binding": {"kind": "uniform", "offset": 16, "size": 4}
+                            "binding": {"kind": "uniform", "offset": 16, "size": 4, "elementStride": 0}
                         }
                     ]
                 }
@@ -45,7 +45,7 @@ standard output = {
         },
         {
             "name": "outputBuffer",
-            "binding": {"kind": "uniform", "offset": 16, "size": 16},
+            "binding": {"kind": "uniform", "offset": 16, "size": 16, "elementStride": 0},
             "type": {
                 "kind": "resource",
                 "baseShape": "structuredBuffer",
diff --git a/tests/reflection/ptr/ptr-self-reference.slang.expected b/tests/reflection/ptr/ptr-self-reference.slang.expected
index 81745fb20..ed704579f 100644
--- a/tests/reflection/ptr/ptr-self-reference.slang.expected
+++ b/tests/reflection/ptr/ptr-self-reference.slang.expected
@@ -6,7 +6,7 @@ standard output = {
     "parameters": [
         {
             "name": "inputBuffer",
-            "binding": {"kind": "uniform", "offset": 0, "size": 16},
+            "binding": {"kind": "uniform", "offset": 0, "size": 16, "elementStride": 0},
             "type": {
                 "kind": "resource",
                 "baseShape": "structuredBuffer",
@@ -21,7 +21,7 @@ standard output = {
                                 "kind": "scalar",
                                 "scalarType": "int32"
                             },
-                            "binding": {"kind": "uniform", "offset": 0, "size": 4}
+                            "binding": {"kind": "uniform", "offset": 0, "size": 4, "elementStride": 0}
                         },
                         {
                             "name": "next",
@@ -29,7 +29,7 @@ standard output = {
                                 "kind": "pointer",
                                 "valueType": "SomeStruct"
                             },
-                            "binding": {"kind": "uniform", "offset": 8, "size": 8}
+                            "binding": {"kind": "uniform", "offset": 8, "size": 8, "elementStride": 0}
                         }
                     ]
                 }
@@ -37,7 +37,7 @@ standard output = {
         },
         {
             "name": "outputBuffer",
-            "binding": {"kind": "uniform", "offset": 16, "size": 16},
+            "binding": {"kind": "uniform", "offset": 16, "size": 16, "elementStride": 0},
             "type": {
                 "kind": "resource",
                 "baseShape": "structuredBuffer",
diff --git a/tests/reflection/ptr/ptr-struct.slang.expected b/tests/reflection/ptr/ptr-struct.slang.expected
index 3ae17416c..71e495dd7 100644
--- a/tests/reflection/ptr/ptr-struct.slang.expected
+++ b/tests/reflection/ptr/ptr-struct.slang.expected
@@ -6,7 +6,7 @@ standard output = {
     "parameters": [
         {
             "name": "inputBuffer",
-            "binding": {"kind": "uniform", "offset": 0, "size": 16},
+            "binding": {"kind": "uniform", "offset": 0, "size": 16, "elementStride": 0},
             "type": {
                 "kind": "resource",
                 "baseShape": "structuredBuffer",
@@ -21,7 +21,7 @@ standard output = {
                                 "kind": "pointer",
                                 "valueType": "int"
                             },
-                            "binding": {"kind": "uniform", "offset": 0, "size": 8}
+                            "binding": {"kind": "uniform", "offset": 0, "size": 8, "elementStride": 0}
                         },
                         {
                             "name": "ptrInt2",
@@ -29,7 +29,7 @@ standard output = {
                                 "kind": "pointer",
                                 "valueType": "int"
                             },
-                            "binding": {"kind": "uniform", "offset": 8, "size": 8}
+                            "binding": {"kind": "uniform", "offset": 8, "size": 8, "elementStride": 0}
                         },
                         {
                             "name": "anInt",
@@ -37,7 +37,7 @@ standard output = {
                                 "kind": "scalar",
                                 "scalarType": "int32"
                             },
-                            "binding": {"kind": "uniform", "offset": 16, "size": 4}
+                            "binding": {"kind": "uniform", "offset": 16, "size": 4, "elementStride": 0}
                         },
                         {
                             "name": "another",
@@ -51,7 +51,7 @@ standard output = {
                                             "kind": "scalar",
                                             "scalarType": "float32"
                                         },
-                                        "binding": {"kind": "uniform", "offset": 0, "size": 4}
+                                        "binding": {"kind": "uniform", "offset": 0, "size": 4, "elementStride": 0}
                                     },
                                     {
                                         "name": "b",
@@ -59,7 +59,7 @@ standard output = {
                                             "kind": "scalar",
                                             "scalarType": "int32"
                                         },
-                                        "binding": {"kind": "uniform", "offset": 4, "size": 4}
+                                        "binding": {"kind": "uniform", "offset": 4, "size": 4, "elementStride": 0}
                                     },
                                     {
                                         "name": "ptrC",
@@ -67,11 +67,11 @@ standard output = {
                                             "kind": "pointer",
                                             "valueType": "int"
                                         },
-                                        "binding": {"kind": "uniform", "offset": 8, "size": 8}
+                                        "binding": {"kind": "uniform", "offset": 8, "size": 8, "elementStride": 0}
                                     }
                                 ]
                             },
-                            "binding": {"kind": "uniform", "offset": 24, "size": 16}
+                            "binding": {"kind": "uniform", "offset": 24, "size": 16, "elementStride": 0}
                         },
                         {
                             "name": "anotherPtr",
@@ -79,7 +79,7 @@ standard output = {
                                 "kind": "pointer",
                                 "valueType": "AnotherStruct"
                             },
-                            "binding": {"kind": "uniform", "offset": 40, "size": 8}
+                            "binding": {"kind": "uniform", "offset": 40, "size": 8, "elementStride": 0}
                         }
                     ]
                 }
@@ -87,7 +87,7 @@ standard output = {
         },
         {
             "name": "outputBuffer",
-            "binding": {"kind": "uniform", "offset": 16, "size": 16},
+            "binding": {"kind": "uniform", "offset": 16, "size": 16, "elementStride": 0},
             "type": {
                 "kind": "resource",
                 "baseShape": "structuredBuffer",