DXIL library support and Artifact type (#2186)

* #include an absolute path didn't work - because paths were taken to always be relative.

* Compile to a dxil library.

* Added CompileProduct.

* Support handling of ModuleLibrary.

* CacheBehavior -> Cache

* Use CompileProduct for -r references.

* CompileProduct -> Artifact.

* Determining an artifact type on binding.

* Determine binary linkability.

* Added Artifact::exists.

* Added ArtifactKeep.

* Small fixes.

* Small improvements to Artifact.

* Add zip extension.

* Fix some comments.

2 files changed, 36 insertions, 0 deletions

diff --git a/tests/library/library-test.slang b/tests/library/library-test.slang
new file mode 100644
index 000000000..06bb22961
--- /dev/null
+++ b/tests/library/library-test.slang
@@ -0,0 +1,27 @@
+// library-test.slang
+
+// A test to try out the basics of using libraries that can be linked (by downstream tools).
+// (This is in contrast to Slang modules and Slangs own linkage mechanisms)
+
+// This didn't work for lib_6_2 when compiling via DXC (!). Even though it's stated elsewhere the feature is available from 6.1
+
+//TEST:COMPILE: tests/library/library.slang -profile lib_6_3 -target dxil -o tests/library/library.dxil
+//DISABLE_TEST:COMPILE: tests/library/library-test.slang -profile cs_6_3 tests/library/library.dxil -o tests/library/library-test.dxil
+
+// It seems that I can't just compile the source containing the entry point/stage with the library/s. 
+// Instead I have to compile all the parts with lib profile, and then link together at the end. 
+
+//DISABLE_TEST:COMPARE_COMPUTE_EX:-slang -compute -xslang -r -xslang tests/serialization/serialized-module.slang-module -shaderobj
+
+extern int foo(int a);
+
+//TEST_INPUT:ubuffer(data=[0 0 0 0 ], stride=4):out,name outputBuffer
+RWStructuredBuffer<int> outputBuffer;
+
+[numthreads(4, 1, 1)]
+void computeMain(uint3 dispatchThreadID : SV_DispatchThreadID)
+{
+    int index = (int)dispatchThreadID.x;
+       
+    outputBuffer[index] = foo(index);
+}
diff --git a/tests/library/library.slang b/tests/library/library.slang
new file mode 100644
index 000000000..a9e7e5e7a
--- /dev/null
+++ b/tests/library/library.slang
@@ -0,0 +1,9 @@
+//TEST_IGNORE_FILE:
+
+// library.slang
+
+public int foo(int a) 
+{ 
+    return a * a + 1;
+}
+