From 79ba9279becf480c9d92bb2faaede0e241f0b029 Mon Sep 17 00:00:00 2001
From: jsmall-nvidia <jsmall@nvidia.com>
Date: Mon, 3 Aug 2020 15:46:16 -0400
Subject: 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>
---
 slang.h | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'slang.h')

diff --git a/slang.h b/slang.h
index fd6655fea..e00b813a8 100644
--- a/slang.h
+++ b/slang.h
@@ -1801,6 +1801,7 @@ extern "C"
         SLANG_TYPE_KIND_INTERFACE,
         SLANG_TYPE_KIND_OUTPUT_STREAM,
         SLANG_TYPE_KIND_SPECIALIZED,
+        SLANG_TYPE_KIND_FEEDBACK,
         SLANG_TYPE_KIND_COUNT,
     };
 
@@ -1842,6 +1843,8 @@ extern "C"
         SLANG_ACCELERATION_STRUCTURE        = 0x09,
 
         SLANG_RESOURCE_EXT_SHAPE_MASK       = 0xF0,
+
+        SLANG_TEXTURE_FEEDBACK_FLAG         = 0x10,
         SLANG_TEXTURE_ARRAY_FLAG            = 0x40,
         SLANG_TEXTURE_MULTISAMPLE_FLAG      = 0x80,
 
@@ -1862,6 +1865,7 @@ extern "C"
         SLANG_RESOURCE_ACCESS_RASTER_ORDERED,
         SLANG_RESOURCE_ACCESS_APPEND,
         SLANG_RESOURCE_ACCESS_CONSUME,
+        SLANG_RESOURCE_ACCESS_WRITE,
     };
 
     typedef unsigned int SlangParameterCategory;
@@ -2205,6 +2209,7 @@ namespace slang
             Interface = SLANG_TYPE_KIND_INTERFACE,
             OutputStream = SLANG_TYPE_KIND_OUTPUT_STREAM,
             Specialized = SLANG_TYPE_KIND_SPECIALIZED,
+            Feedback = SLANG_TYPE_KIND_FEEDBACK,
         };
 
         enum ScalarType : SlangScalarType
-- 
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