Feature/attributed binding (#621)

* Typo fix, and added dxc to command line documentation.

* Fix small typos.
Added support for Scope to lexer.
Fix bug in Token ctor.

* Add support for attribute names that are scoped.

* Added GLSLBindingAttribute. Make binding work through core.met.slang.

* Allow [[gl::binding(binding, set)]]
[[vk::binding(binding,set)]]

2 files changed, 139 insertions, 0 deletions

diff --git a/tests/reflection/binding-gl.hlsl b/tests/reflection/binding-gl.hlsl
new file mode 100644
index 000000000..cd2ab666a
--- /dev/null
+++ b/tests/reflection/binding-gl.hlsl
@@ -0,0 +1,27 @@
+//TEST:REFLECTION:-profile ps_4_0 -target spirv
+
+// Confirm that we can generate reflection info for arrays
+//
+// Note: just working with fixed-size arrays for now.
+// Unbounded arrays may require more work.
+
+layout(binding=0, set = 1) cbuffer MyConstantBuffer
+{
+	float x;
+
+	float a[10];
+
+	float y;
+}
+
+[[vk::binding(1,2)]] Texture2D tx;
+[gl::binding(2,3)] Texture2D ta;
+Texture2D ty;
+SamplerState sx;
+SamplerState sa[4];
+SamplerState sy;
+
+float4 main() : SV_Target
+{
+	return 0.0;
+}
\ No newline at end of file
diff --git a/tests/reflection/binding-gl.hlsl.expected b/tests/reflection/binding-gl.hlsl.expected
new file mode 100644
index 000000000..5ace782cc
--- /dev/null
+++ b/tests/reflection/binding-gl.hlsl.expected
@@ -0,0 +1,112 @@
+result code = 0
+standard error = {
+}
+standard output = {
+{
+    "parameters": [
+        {
+            "name": "MyConstantBuffer",
+            "binding": {"kind": "descriptorTableSlot", "space": 1, "index": 0},
+            "type": {
+                "kind": "constantBuffer",
+                "elementType": {
+                    "kind": "struct",
+                    "fields": [
+                        {
+                            "name": "x",
+                            "type": {
+                                "kind": "scalar",
+                                "scalarType": "float32"
+                            },
+                            "binding": {"kind": "uniform", "offset": 0, "size": 4}
+                        },
+                        {
+                            "name": "a",
+                            "type": {
+                                "kind": "array",
+                                "elementCount": 10,
+                                "elementType": {
+                                    "kind": "scalar",
+                                    "scalarType": "float32"
+                                },
+                                "uniformStride": 16
+                            },
+                            "binding": {"kind": "uniform", "offset": 16, "size": 160}
+                        },
+                        {
+                            "name": "y",
+                            "type": {
+                                "kind": "scalar",
+                                "scalarType": "float32"
+                            },
+                            "binding": {"kind": "uniform", "offset": 176, "size": 4}
+                        }
+                    ]
+                }
+            }
+        },
+        {
+            "name": "tx",
+            "binding": {"kind": "descriptorTableSlot", "space": 2, "index": 1},
+            "type": {
+                "kind": "resource",
+                "baseShape": "texture2D"
+            }
+        },
+        {
+            "name": "ta",
+            "binding": {"kind": "descriptorTableSlot", "space": 3, "index": 2},
+            "type": {
+                "kind": "resource",
+                "baseShape": "texture2D"
+            }
+        },
+        {
+            "name": "ty",
+            "binding": {"kind": "descriptorTableSlot", "index": 0},
+            "type": {
+                "kind": "resource",
+                "baseShape": "texture2D"
+            }
+        },
+        {
+            "name": "sx",
+            "binding": {"kind": "descriptorTableSlot", "index": 1},
+            "type": {
+                "kind": "samplerState"
+            }
+        },
+        {
+            "name": "sa",
+            "binding": {"kind": "descriptorTableSlot", "index": 2},
+            "type": {
+                "kind": "array",
+                "elementCount": 4,
+                "elementType": {
+                    "kind": "samplerState"
+                }
+            }
+        },
+        {
+            "name": "sy",
+            "binding": {"kind": "descriptorTableSlot", "index": 3},
+            "type": {
+                "kind": "samplerState"
+            }
+        },
+        {
+            "name": "SLANG_hack_samplerForTexelFetch",
+            "binding": {"kind": "descriptorTableSlot", "index": 4},
+            "type": {
+                "kind": "samplerState"
+            }
+        }
+    ],
+    "entryPoints": [
+        {
+            "name": "main",
+            "stage:": "fragment"
+        }
+    ]
+}
+}