[PATCH v3 1/6] tests: Add more tests for function definitions.

[Zebediah Figura]

From: Zebediah Figura

---
 tests/hlsl-function.shader_test | 61 +++++++++++++++++++++++++++++++++
 1 file changed, 61 insertions(+)

diff --git a/tests/hlsl-function.shader_test b/tests/hlsl-function.shader_test
index e3ed5819..fa35963d 100644
--- a/tests/hlsl-function.shader_test
+++ b/tests/hlsl-function.shader_test
@@ -106,8 +106,39 @@ float4 main() : sv_target
     return 0;
 }

+% The function must have been at least declared before calling it. It may have
+% been declared with a different but compatible type, though.
+
+[pixel shader fail]
+
+float4 main() : sv_target
+{
+    func();
+    return 0;
+}
+
+void func()
+{
+}
+
+[pixel shader todo]
+
+void func();
+
+float4 main() : sv_target
+{
+    func();
+    return 0;
+}
+
+void func()
+{
+}
+
 [pixel shader fail]

+void func(float arg);
+
 float4 main() : sv_target
 {
     func();
@@ -120,6 +151,36 @@ void func()

[pixel shader todo]

+/* This is something of an internal test: we need to make sure that we use the
+ * correct variables for a function's arguments and returns regardless of
+ * whether it's been defined yet.
+ *
+ * Also, make sure that we can handle the case where the argument names differ.
+ */
+
+float2 concat(float x, float y);
+
+float2 func(void)
+{
+    return concat(0.1, 0.2);
+}
+
+float2 concat(float a, float b)
+{
+    return float2(a, b);
+}
+
+float4 main() : sv_target
+{
+    return float4(func(), concat(0.3, 0.4));
+}
+
+[test]
+todo draw quad
+todo probe all rgba (0.1, 0.2, 0.3, 0.4)
+
+[pixel shader todo]
+
 float func(in float a, out float b, inout float c)
 {
     c -= 0.2;