WIP Mesh shaders for SPIR-V (#3226)

* SPIR-V impl for SetMeshOutputCounts and DispatchMesh

* Unsightly fix for legalization ordering differences between GLSL and SPIR-V

* spelling

* Start a new block after terminating one in the OpEmitMeshTasksExt SPIR-V asm block

* Emit mesh shader decorations in SPIR-V

* Mesh and task shader stages for spir-v

* Output explicit gl builtins for spir-v

* Be more hygenic when SOAizing mesh outputs

* Do not create builtin paramter block for spirv mesh outputs

* Pass mesh payloads around by ref

* comment

* less expected failure

* remove unused

* Add spirv op

* Correct type query for default flat modifier

---------

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

1 files changed, 14 insertions, 0 deletions

diff --git a/source/slang/slang-ir.cpp b/source/slang/slang-ir.cpp
index 5fa558e15..675667dbc 100644
--- a/source/slang/slang-ir.cpp
+++ b/source/slang/slang-ir.cpp
@@ -4288,6 +4288,20 @@ namespace Slang
         return globalVar;
     }
 
+    IRGlobalVar* IRBuilder::createGlobalVar(
+        IRType*         valueType,
+        IRIntegerValue  addressSpace)
+    {
+        auto ptrType = getPtrType(kIROp_PtrType, valueType, addressSpace);
+        IRGlobalVar* globalVar = createInst<IRGlobalVar>(
+            this,
+            kIROp_GlobalVar,
+            ptrType);
+        _maybeSetSourceLoc(globalVar);
+        addGlobalValue(this, globalVar);
+        return globalVar;
+    }
+
     IRGlobalParam* IRBuilder::createGlobalParam(
         IRType* valueType)
     {