Fix for default initialization with generic field (#2168)

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

* Fix for = {} initialization with a field that is generic type parameter.

* Handling for if a non type is passed to a generic parameter which requires a type.

* Small comment improvements.
Fix some tab issues.

* This fixes the matrix.slang issue. Move the matrix.slang test into bugs as generic-default-matrix.slang

6 files changed, 61 insertions, 7 deletions

diff --git a/tests/experiments/generic/matrix.slang b/tests/bugs/generic-default-matrix.slang
index c55c7be33..47fbe520e 100644
--- a/tests/experiments/generic/matrix.slang
+++ b/tests/bugs/generic-default-matrix.slang
@@ -1,9 +1,4 @@
-//DISABLE_TEST(compute):COMPARE_COMPUTE_EX:-slang -compute -shaderobj
-
-/* A test to use generics around resource/built in types. 
-
-CRASHES the compiler. 
- */
+//TEST(compute):COMPARE_COMPUTE_EX:-slang -compute -shaderobj
 
 //TEST_INPUT:ubuffer(data=[0 0 0 0], stride=4):out,name outputBuffer
 RWStructuredBuffer<int> outputBuffer;
@@ -20,6 +15,6 @@ void computeMain(uint3 dispatchThreadID : SV_DispatchThreadID)
 
     Another<2, 4> a = {};
    
-	outputBuffer[index] = index;
+	outputBuffer[index] = index + a.values[0].x;
 }
 
diff --git a/tests/bugs/generic-default-matrix.slang.expected.txt b/tests/bugs/generic-default-matrix.slang.expected.txt
new file mode 100644
index 000000000..bc856dafa
--- /dev/null
+++ b/tests/bugs/generic-default-matrix.slang.expected.txt
@@ -0,0 +1,4 @@
+0
+1
+2
+3
diff --git a/tests/bugs/generic-default-value.slang b/tests/bugs/generic-default-value.slang
new file mode 100644
index 000000000..b3805e317
--- /dev/null
+++ b/tests/bugs/generic-default-value.slang
@@ -0,0 +1,23 @@
+//TEST(compute):COMPARE_COMPUTE_EX:-slang -compute -shaderobj 
+
+//TEST_INPUT:ubuffer(data=[0 0 0 0], stride=4):out,name outputBuffer
+RWStructuredBuffer<int> outputBuffer;
+
+/* Tests purpose is to confirm that use of `= {}` initialization 
+works with a generic */
+
+struct Check<T>
+{
+    T v;
+};
+
+[numthreads(4, 1, 1)]
+void computeMain(uint3 dispatchThreadID : SV_DispatchThreadID)
+{
+    int index = dispatchThreadID.x;
+
+    Check<float> v = {};
+    
+    outputBuffer[index] = index + v.v; 
+}
+
diff --git a/tests/bugs/generic-default-value.slang.expected.txt b/tests/bugs/generic-default-value.slang.expected.txt
new file mode 100644
index 000000000..bc856dafa
--- /dev/null
+++ b/tests/bugs/generic-default-value.slang.expected.txt
@@ -0,0 +1,4 @@
+0
+1
+2
+3
diff --git a/tests/diagnostics/generic-invalid-type-specialization.slang b/tests/diagnostics/generic-invalid-type-specialization.slang
new file mode 100644
index 000000000..28d155643
--- /dev/null
+++ b/tests/diagnostics/generic-invalid-type-specialization.slang
@@ -0,0 +1,20 @@
+//DIAGNOSTIC_TEST:SIMPLE:
+
+//TEST_INPUT:ubuffer(data=[0 0 0 0], stride=4):out,name outputBuffer
+RWStructuredBuffer<int> outputBuffer;
+
+struct Check<T>
+{
+    T v;
+};
+
+[numthreads(4, 1, 1)]
+void computeMain(uint3 dispatchThreadID : SV_DispatchThreadID)
+{
+    int index = dispatchThreadID.x;
+
+    // Invalid as should only accept a type
+    Check<2 + 2> v; 
+    
+    outputBuffer[index] = index; 
+}
diff --git a/tests/diagnostics/generic-invalid-type-specialization.slang.expected b/tests/diagnostics/generic-invalid-type-specialization.slang.expected
new file mode 100644
index 000000000..b3c75c760
--- /dev/null
+++ b/tests/diagnostics/generic-invalid-type-specialization.slang.expected
@@ -0,0 +1,8 @@
+result code = -1
+standard error = {
+tests/diagnostics/generic-invalid-type-specialization.slang(17): error 30060: expected a type, got a 'InfixExpr'
+    Check<2 + 2> v;
+            ^
+}
+standard output = {
+}