prototype for spirv linking

funnyassets/shaders/macros.hlsl

@@ -27,26 +27,29 @@
 #define CALLABLE namespace CallableShader_DO_NOT_USE
 #endif
 
-float4 Test()
+/* 
+ * we kinda want to lookup OpExecuteCallableKHR inside of runtime linker
+ * and replace _CallShader with our own
+ * but stupid slangc can't do noinline 
+ * so we have to do id += 1 and id -= 1
+ * overall trick 5/10
+ */
+[noinline]
+void _CallShader2<Payload>( uint32_t id, inout Payload data )
 {
-	return float4(1,0.5,1,1);
+	id -= 1;
+	spirv_asm
+	{
+		OpExecuteCallableKHR $id $data;
+	};
 }
 
-#ifndef USE_CALLABLE_SHADERS
-#define USE_CALLABLE_SHADERS
-#endif
-
-struct RunShaderResult_t<A>
-{
-	A val;
-
-};
-
 [noinline]
-[builtin]
-RunShaderResult_t<A> RunShader<A, B>( uint32_t id, B data ) where optional B
+void _CallShader<Payload>( uint32_t id, inout Payload data )
 {
-	return {};
+	id += 1;
+	_CallShader2(id, data);
 }
+#define CallShader _CallShader
 
 #endif