Add slangc interface to compile and use ir modules. (#3615)

* Add slangc interface to compile and use ir modules.

* Fix glsl scalar layout settings not copied to target.

* Fix.

* Cleanups.

11 files changed, 35 insertions, 47 deletions

diff --git a/tests/serialization/extern/extern-test.slang b/tests/serialization/extern/extern-test.slang
index 1efb221dc..c46724603 100644
--- a/tests/serialization/extern/extern-test.slang
+++ b/tests/serialization/extern/extern-test.slang
@@ -1,18 +1,18 @@
 // extern-test.slang
 
-//TEST:COMPILE: -module-name module -no-codegen tests/serialization/extern/module-a.slang -o tests/serialization/extern/module-a.slang-lib
-//TEST:COMPILE: -module-name module -no-codegen tests/serialization/extern/module-b.slang -o tests/serialization/extern/module-b.slang-lib
-//TEST:COMPARE_COMPUTE_EX: -xslang -module-name -xslang module -slang -compute -xslang -r -xslang tests/serialization/extern/module-a.slang-lib -xslang -r -xslang tests/serialization/extern/module-b.slang-lib -shaderobj
+//TEST:COMPILE: -no-codegen tests/serialization/extern/module-a.slang -o tests/serialization/extern/module-a.slang-lib
+//TEST:COMPILE: -no-codegen tests/serialization/extern/module-b.slang -o tests/serialization/extern/module-b.slang-lib
+//TEST:COMPARE_COMPUTE_EX: -slang -compute -xslang -r -xslang tests/serialization/extern/module-a.slang-lib -xslang -r -xslang tests/serialization/extern/module-b.slang-lib -shaderobj
 
 //TEST_INPUT:ubuffer(data=[0 0 0 0 ], stride=4):out,name outputBuffer
 RWStructuredBuffer<int> outputBuffer;
 
 // Declare the type exists
-[__extern] struct Thing {};
+extern struct Thing {};
 // A mechanism to make a Thing without knowing the specific fields.
-[__extern] Thing makeThing(int a, int b);
+extern Thing makeThing(int a, int b);
 
-[__extern] int doSomething(Thing a, Thing b);
+extern int doSomething(Thing a, Thing b);
 
 [numthreads(4, 1, 1)]
 void computeMain(uint3 dispatchThreadID : SV_DispatchThreadID)
diff --git a/tests/serialization/extern/module-a.slang b/tests/serialization/extern/module-a.slang
index 81816a213..59ccf7bcd 100644
--- a/tests/serialization/extern/module-a.slang
+++ b/tests/serialization/extern/module-a.slang
@@ -2,13 +2,13 @@
 
 // module-a.slang
 
-struct Thing
+export struct Thing
 {
     int a; 
     int b;
 };
 
-Thing makeThing(int a, int b)
+export Thing makeThing(int a, int b)
 {
     Thing thing;
     thing.a = a;
@@ -16,7 +16,7 @@ Thing makeThing(int a, int b)
     return thing;
 }
 
-int foo(Thing thing) 
+export int foo(Thing thing) 
 { 
     return thing.a + thing.b * 2; 
 }
diff --git a/tests/serialization/extern/module-b.slang b/tests/serialization/extern/module-b.slang
index 20371f156..2bc646db8 100644
--- a/tests/serialization/extern/module-b.slang
+++ b/tests/serialization/extern/module-b.slang
@@ -3,10 +3,10 @@
 // module-b.slang
 
 // This looks like a definition (and it is) but with [__extern] it's definition will be replaced at link time with a defintion
-[__extern] struct Thing {};
-[__extern] int foo(Thing thing);
+extern struct Thing {};
+extern int foo(Thing thing);
 
-int doSomething(Thing a, Thing b)
+export int doSomething(Thing a, Thing b)
 {
     return foo(a) + foo(b);
 }
diff --git a/tests/serialization/obfuscated-loc-module.slang b/tests/serialization/obfuscated-loc-module.slang
index 63c4f61ee..4837e6486 100644
--- a/tests/serialization/obfuscated-loc-module.slang
+++ b/tests/serialization/obfuscated-loc-module.slang
@@ -3,13 +3,13 @@
 // obfuscated-loc-module.slang
 
 
-int billy(int v)
+export int billy(int v)
 {
     return v + 1;
 }
 
 // This function is designed to fail during IR passes/emit. 
-int silly(int a)
+export int silly(int a)
 {
     int t = 0;
     [ForceUnroll(10)]
diff --git a/tests/serialization/obfuscated-module-check-loc.slang b/tests/serialization/obfuscated-module-check-loc.slang
index 49251760c..87236b576 100644
--- a/tests/serialization/obfuscated-module-check-loc.slang
+++ b/tests/serialization/obfuscated-module-check-loc.slang
@@ -11,8 +11,8 @@ RWStructuredBuffer<float> outputBuffer;
 
 // We *don't* import because if we do we'll get a fresh compilation from source... we want to make sure it's using the -r module
 //import obfuscated_loc_module;
-int silly(int v);
-int billy(int v);
+extern int silly(int v);
+extern int billy(int v);
 
 [numthreads(1, 1, 1)]
 void computeMain(uint3 dispatchThreadID : SV_DispatchThreadID)
diff --git a/tests/serialization/obfuscated-serialized-module-shared.slang b/tests/serialization/obfuscated-serialized-module-shared.slang
new file mode 100644
index 000000000..76b7e3f5c
--- /dev/null
+++ b/tests/serialization/obfuscated-serialized-module-shared.slang
@@ -0,0 +1,5 @@
+struct Thing
+{
+    int a; 
+    int b;
+};
diff --git a/tests/serialization/obfuscated-serialized-module-test.slang b/tests/serialization/obfuscated-serialized-module-test.slang
index 927ee06bc..8afe1fb09 100644
--- a/tests/serialization/obfuscated-serialized-module-test.slang
+++ b/tests/serialization/obfuscated-serialized-module-test.slang
@@ -3,20 +3,12 @@
 // A test to try out the basics of module
 // serialization, obfuscation and source maps.
 
-//TEST:COMPILE: tests/serialization/serialized-module.slang -o tests/serialization/obfuscated-serialized-module.slang-module -g -obfuscate
+//TEST:COMPILE: tests/serialization/obfuscated-serialized-module.slang -o tests/serialization/obfuscated-serialized-module.slang-module -g -obfuscate
 //TEST:COMPARE_COMPUTE_EX:-slang -compute -Xslang... -r tests/serialization/obfuscated-serialized-module.slang-module -obfuscate -X. -shaderobj
 
-//import obfuscated_serialized_module;
+import obfuscated_serialized_module_shared;
 
-// This is fragile - needs match the definition in obfuscated_serialized_module
-struct Thing
-{
-    int a;
-    int b;
-};
-
-// TODO: need to get the name mangling to line up!
-int foo(Thing thing);
+extern int foo(Thing thing);
 
 //TEST_INPUT:ubuffer(data=[0 0 0 0 ], stride=4):out,name outputBuffer
 RWStructuredBuffer<int> outputBuffer;
diff --git a/tests/serialization/obfuscated-serialized-module.slang b/tests/serialization/obfuscated-serialized-module.slang
index 17ddfa662..3aa3b8978 100644
--- a/tests/serialization/obfuscated-serialized-module.slang
+++ b/tests/serialization/obfuscated-serialized-module.slang
@@ -1,14 +1,9 @@
 //TEST_IGNORE_FILE:
 
 // obfuscated-serialized-module.slang
+import obfuscated_serialized_module_shared;
 
-struct Thing
-{
-    int a; 
-    int b;
-};
-
-int foo(Thing thing) 
+export int foo(Thing thing) 
 { 
     return (thing.a + thing.b) - thing.b; 
 }
diff --git a/tests/serialization/serialized-module-shared.slang b/tests/serialization/serialized-module-shared.slang
new file mode 100644
index 000000000..143cff6fa
--- /dev/null
+++ b/tests/serialization/serialized-module-shared.slang
@@ -0,0 +1,5 @@
+struct Thing
+{
+    int a;
+    int b;
+};
diff --git a/tests/serialization/serialized-module-test.slang b/tests/serialization/serialized-module-test.slang
index d27fe0458..3e7588a2a 100644
--- a/tests/serialization/serialized-module-test.slang
+++ b/tests/serialization/serialized-module-test.slang
@@ -9,14 +9,9 @@
 //import serialized_module;
 
 // This is fragile - needs match the definition in serialized_module
-struct Thing
-{
-    int a;
-    int b;
-};
+import serialized_module_shared;
 
-// TODO: need to get the name mangling to line up!
-int foo(Thing thing);
+extern int foo(Thing thing);
 
 //TEST_INPUT:ubuffer(data=[0 0 0 0 ], stride=4):out,name outputBuffer
 RWStructuredBuffer<int> outputBuffer;
diff --git a/tests/serialization/serialized-module.slang b/tests/serialization/serialized-module.slang
index e94edf8d4..861ddb300 100644
--- a/tests/serialization/serialized-module.slang
+++ b/tests/serialization/serialized-module.slang
@@ -2,13 +2,9 @@
 
 // serialized-module.slang
 
-struct Thing
-{
-    int a; 
-    int b;
-};
+import serialized_module_shared;
 
-int foo(Thing thing) 
+export int foo(Thing thing) 
 { 
     return (thing.a + thing.b) - thing.b; 
 }