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

1 files changed, 22 insertions, 22 deletions

diff --git a/tests/reflection/buffer-layout.slang.expected b/tests/reflection/buffer-layout.slang.expected
index 84a3e4b49..d37f94ea6 100644
--- a/tests/reflection/buffer-layout.slang.expected
+++ b/tests/reflection/buffer-layout.slang.expected
@@ -19,7 +19,7 @@ standard output = {
                                 "kind": "scalar",
                                 "scalarType": "float32"
                             },
-                            "binding": {"kind": "uniform", "offset": 0, "size": 4}
+                            "binding": {"kind": "uniform", "offset": 0, "size": 4, "elementStride": 0}
                         },
                         {
                             "name": "a",
@@ -33,7 +33,7 @@ standard output = {
                                             "kind": "scalar",
                                             "scalarType": "float32"
                                         },
-                                        "binding": {"kind": "uniform", "offset": 0, "size": 4}
+                                        "binding": {"kind": "uniform", "offset": 0, "size": 4, "elementStride": 0}
                                     },
                                     {
                                         "name": "y",
@@ -41,11 +41,11 @@ standard output = {
                                             "kind": "scalar",
                                             "scalarType": "float32"
                                         },
-                                        "binding": {"kind": "uniform", "offset": 4, "size": 4}
+                                        "binding": {"kind": "uniform", "offset": 4, "size": 4, "elementStride": 0}
                                     }
                                 ]
                             },
-                            "binding": {"kind": "uniform", "offset": 16, "size": 8}
+                            "binding": {"kind": "uniform", "offset": 16, "size": 8, "elementStride": 0}
                         },
                         {
                             "name": "b",
@@ -53,7 +53,7 @@ standard output = {
                                 "kind": "scalar",
                                 "scalarType": "int32"
                             },
-                            "binding": {"kind": "uniform", "offset": 24, "size": 4}
+                            "binding": {"kind": "uniform", "offset": 24, "size": 4, "elementStride": 0}
                         },
                         {
                             "name": "c",
@@ -70,7 +70,7 @@ standard output = {
                                 },
                                 "uniformStride": 16
                             },
-                            "binding": {"kind": "uniform", "offset": 32, "size": 24}
+                            "binding": {"kind": "uniform", "offset": 32, "size": 24, "elementStride": 16}
                         },
                         {
                             "name": "d",
@@ -78,7 +78,7 @@ standard output = {
                                 "kind": "scalar",
                                 "scalarType": "int32"
                             },
-                            "binding": {"kind": "uniform", "offset": 56, "size": 4}
+                            "binding": {"kind": "uniform", "offset": 56, "size": 4, "elementStride": 0}
                         }
                     ]
                 },
@@ -96,7 +96,7 @@ standard output = {
                                     "kind": "scalar",
                                     "scalarType": "float32"
                                 },
-                                "binding": {"kind": "uniform", "offset": 0, "size": 4}
+                                "binding": {"kind": "uniform", "offset": 0, "size": 4, "elementStride": 0}
                             },
                             {
                                 "name": "a",
@@ -110,7 +110,7 @@ standard output = {
                                                 "kind": "scalar",
                                                 "scalarType": "float32"
                                             },
-                                            "binding": {"kind": "uniform", "offset": 0, "size": 4}
+                                            "binding": {"kind": "uniform", "offset": 0, "size": 4, "elementStride": 0}
                                         },
                                         {
                                             "name": "y",
@@ -118,11 +118,11 @@ standard output = {
                                                 "kind": "scalar",
                                                 "scalarType": "float32"
                                             },
-                                            "binding": {"kind": "uniform", "offset": 4, "size": 4}
+                                            "binding": {"kind": "uniform", "offset": 4, "size": 4, "elementStride": 0}
                                         }
                                     ]
                                 },
-                                "binding": {"kind": "uniform", "offset": 16, "size": 8}
+                                "binding": {"kind": "uniform", "offset": 16, "size": 8, "elementStride": 0}
                             },
                             {
                                 "name": "b",
@@ -130,7 +130,7 @@ standard output = {
                                     "kind": "scalar",
                                     "scalarType": "int32"
                                 },
-                                "binding": {"kind": "uniform", "offset": 24, "size": 4}
+                                "binding": {"kind": "uniform", "offset": 24, "size": 4, "elementStride": 0}
                             },
                             {
                                 "name": "c",
@@ -147,7 +147,7 @@ standard output = {
                                     },
                                     "uniformStride": 16
                                 },
-                                "binding": {"kind": "uniform", "offset": 32, "size": 24}
+                                "binding": {"kind": "uniform", "offset": 32, "size": 24, "elementStride": 16}
                             },
                             {
                                 "name": "d",
@@ -155,11 +155,11 @@ standard output = {
                                     "kind": "scalar",
                                     "scalarType": "int32"
                                 },
-                                "binding": {"kind": "uniform", "offset": 56, "size": 4}
+                                "binding": {"kind": "uniform", "offset": 56, "size": 4, "elementStride": 0}
                             }
                         ]
                     },
-                    "binding": {"kind": "uniform", "offset": 0, "size": 60}
+                    "binding": {"kind": "uniform", "offset": 0, "size": 60, "elementStride": 0}
                 }
             }
         },
@@ -180,7 +180,7 @@ standard output = {
                                 "kind": "scalar",
                                 "scalarType": "float32"
                             },
-                            "binding": {"kind": "uniform", "offset": 0, "size": 4}
+                            "binding": {"kind": "uniform", "offset": 0, "size": 4, "elementStride": 0}
                         },
                         {
                             "name": "a",
@@ -194,7 +194,7 @@ standard output = {
                                             "kind": "scalar",
                                             "scalarType": "float32"
                                         },
-                                        "binding": {"kind": "uniform", "offset": 0, "size": 4}
+                                        "binding": {"kind": "uniform", "offset": 0, "size": 4, "elementStride": 0}
                                     },
                                     {
                                         "name": "y",
@@ -202,11 +202,11 @@ standard output = {
                                             "kind": "scalar",
                                             "scalarType": "float32"
                                         },
-                                        "binding": {"kind": "uniform", "offset": 4, "size": 4}
+                                        "binding": {"kind": "uniform", "offset": 4, "size": 4, "elementStride": 0}
                                     }
                                 ]
                             },
-                            "binding": {"kind": "uniform", "offset": 4, "size": 8}
+                            "binding": {"kind": "uniform", "offset": 4, "size": 8, "elementStride": 0}
                         },
                         {
                             "name": "b",
@@ -214,7 +214,7 @@ standard output = {
                                 "kind": "scalar",
                                 "scalarType": "int32"
                             },
-                            "binding": {"kind": "uniform", "offset": 12, "size": 4}
+                            "binding": {"kind": "uniform", "offset": 12, "size": 4, "elementStride": 0}
                         },
                         {
                             "name": "c",
@@ -231,7 +231,7 @@ standard output = {
                                 },
                                 "uniformStride": 8
                             },
-                            "binding": {"kind": "uniform", "offset": 16, "size": 16}
+                            "binding": {"kind": "uniform", "offset": 16, "size": 16, "elementStride": 8}
                         },
                         {
                             "name": "d",
@@ -239,7 +239,7 @@ standard output = {
                                 "kind": "scalar",
                                 "scalarType": "int32"
                             },
-                            "binding": {"kind": "uniform", "offset": 32, "size": 4}
+                            "binding": {"kind": "uniform", "offset": 32, "size": 4, "elementStride": 0}
                         }
                     ]
                 }