First pass support for Sampler Feedback (#1470)

* Add the Feedback texture types.
Depreciate SLANG_RESOURCE_EXT_SHAPE_MASK.

* Starting point to test sampler feedback.

* WIP on FeedbackSampler.

* Use __target_intrinsic to override the output of sampler feedback types.

* Use newer generic syntax for FeedbackTexture.

* Reflects Feedback type.

* SLANG_TYPE_KIND_TEXTURE_FEEDBACK -> SLANG_TYPE_KIND_FEEDBACK

* Added reflection test.

* Reneable issue with generics in sampler-feedback-basic.slang

* Add methods to FeedbackTexture2D/Array.
Make test cover test cases.

* Sampler feedback produces DXC code.

* Disabled Sampler feedback test - as requires newer version of DXC.

* Fix bug in reflection tool output.

* Fix problem with direct-spirv-emit.slang.expected due to update to glslang.

* Fix direct-spirv-emit.slang

* Use SLANG_RESOURCE_EXT_SHAPE_MASK again

* Make Feedback be emitted as a textue type prefix.

Co-authored-by: Tim Foley <tfoleyNV@users.noreply.github.com>

1 files changed, 110 insertions, 0 deletions

diff --git a/tests/hlsl-intrinsic/sampler-feedback/sampler-feedback-basic.slang.expected b/tests/hlsl-intrinsic/sampler-feedback/sampler-feedback-basic.slang.expected
new file mode 100644
index 000000000..1d4dda6b0
--- /dev/null
+++ b/tests/hlsl-intrinsic/sampler-feedback/sampler-feedback-basic.slang.expected
@@ -0,0 +1,110 @@
+result code = 0
+standard error = {
+}
+standard output = {
+{
+    "parameters": [
+        {
+            "name": "feedbackMinMip",
+            "binding": {"kind": "unorderedAccess", "index": 0},
+            "type": {
+                "kind": "resource",
+                "baseShape": "texture2D",
+                "feedback": true,
+                "access": "write",
+                "resultType": {
+                    "kind": "Feedback",
+                    "name": "SAMPLER_FEEDBACK_MIN_MIP"
+                }
+            }
+        },
+        {
+            "name": "feedbackMipRegionUsed",
+            "binding": {"kind": "unorderedAccess", "index": 1},
+            "type": {
+                "kind": "resource",
+                "baseShape": "texture2D",
+                "feedback": true,
+                "access": "write",
+                "resultType": {
+                    "kind": "Feedback",
+                    "name": "SAMPLER_FEEDBACK_MIP_REGION_USED"
+                }
+            }
+        },
+        {
+            "name": "feedbackMinMipArray",
+            "binding": {"kind": "unorderedAccess", "index": 2},
+            "type": {
+                "kind": "resource",
+                "baseShape": "texture2D",
+                "array": true,
+                "feedback": true,
+                "access": "write",
+                "resultType": {
+                    "kind": "Feedback",
+                    "name": "SAMPLER_FEEDBACK_MIN_MIP"
+                }
+            }
+        },
+        {
+            "name": "feebackMipRegionUsedArray",
+            "binding": {"kind": "unorderedAccess", "index": 3},
+            "type": {
+                "kind": "resource",
+                "baseShape": "texture2D",
+                "array": true,
+                "feedback": true,
+                "access": "write",
+                "resultType": {
+                    "kind": "Feedback",
+                    "name": "SAMPLER_FEEDBACK_MIP_REGION_USED"
+                }
+            }
+        },
+        {
+            "name": "tex2D",
+            "binding": {"kind": "shaderResource", "index": 0},
+            "type": {
+                "kind": "resource",
+                "baseShape": "texture2D"
+            }
+        },
+        {
+            "name": "tex2DArray",
+            "binding": {"kind": "shaderResource", "index": 1},
+            "type": {
+                "kind": "resource",
+                "baseShape": "texture2D",
+                "array": true
+            }
+        },
+        {
+            "name": "samp",
+            "binding": {"kind": "samplerState", "index": 0},
+            "type": {
+                "kind": "samplerState"
+            }
+        }
+    ],
+    "entryPoints": [
+        {
+            "name": "main",
+            "stage:": "fragment",
+            "result:": {
+                "stage": "fragment",
+                "binding": {"kind": "varyingOutput", "index": 0},
+                "semanticName": "SV_TARGET",
+                "type": {
+                    "kind": "vector",
+                    "elementCount": 4,
+                    "elementType": {
+                        "kind": "scalar",
+                        "scalarType": "float32"
+                    }
+                }
+            }
+        }
+    ]
+}
+}