GLSL Passthrough support for SSBO types (#3446)

* GLSL Passthrough support for SSBO types

* GLSL Passthrough support for SSBO types

* Correctly apply glsl local size layout to entry points during lowering

* Test for glsl layout correctness

* typo

* Reflect GLSL SSBO as raw buffers

* Functional test for glsl ssbo

* Allow allow glsl for render tests

* Functional test for ssbo passthrough

* Functional test for ssbo passthrough with spirv-direct

* fix windows build error

---------

Co-authored-by: Yong He <yonghe@outlook.com>

3 files changed, 14 insertions, 0 deletions

diff --git a/tools/render-test/options.cpp b/tools/render-test/options.cpp
index 0266a0c75..4b62eb60b 100644
--- a/tools/render-test/options.cpp
+++ b/tools/render-test/options.cpp
@@ -223,6 +223,14 @@ static gfx::DeviceType _toRenderType(Slang::RenderApiType apiType)
             //
             // TODO: At some point we could warn/error and deprecate this option.
         }
+        else if (argValue == "-allow-glsl")
+        {
+            outOptions.allowGLSL = true;
+        }
+        else if (argValue == "-entry")
+        {
+            SLANG_RETURN_ON_FAIL(reader.expectArg(outOptions.entryPointName));
+        }
         else
         {
             // Lookup
diff --git a/tools/render-test/options.h b/tools/render-test/options.h
index e3b19c272..5a46c4000 100644
--- a/tools/render-test/options.h
+++ b/tools/render-test/options.h
@@ -71,6 +71,10 @@ struct Options
 
     bool dontAddDefaultEntryPoints = false;
 
+    bool allowGLSL = false;
+
+    Slang::String entryPointName;
+
     Slang::List<Slang::String> renderFeatures;          /// Required render features for this test to run
 
     uint32_t computeDispatchSize[3] = { 1, 1, 1 };
diff --git a/tools/render-test/slang-support.cpp b/tools/render-test/slang-support.cpp
index 82d292cee..c598e4ea5 100644
--- a/tools/render-test/slang-support.cpp
+++ b/tools/render-test/slang-support.cpp
@@ -110,6 +110,8 @@ void ShaderCompilerUtil::Output::reset()
     if (options.generateSPIRVDirectly)
         spSetTargetFlags(slangRequest, 0, SLANG_TARGET_FLAG_GENERATE_SPIRV_DIRECTLY);
 
+    slangRequest->setAllowGLSLInput(options.allowGLSL);
+
     // Define a macro so that shader code in a test can detect what language we
     // are nominally working with.
     char const* langDefine = nullptr;