[PATCH 3/4] tests: Add some tests for overloading the entry point.

[Zebediah Figura]

From: Zebediah Figura

---
 Makefile.am                            |   1 +
 tests/entry-point-overload.shader_test | 114 +++++++++++++++++++++++++
 2 files changed, 115 insertions(+)
 create mode 100644 tests/entry-point-overload.shader_test

diff --git a/Makefile.am b/Makefile.am
index e12259ce..71545a94 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -59,6 +59,7 @@ vkd3d_shader_tests = \
    tests/cbuffer.shader_test \
    tests/compute.shader_test \
    tests/conditional.shader_test \
+	tests/entry-point-overload.shader_test \
    tests/floor.shader_test \
    tests/function-return.shader_test \
    tests/hlsl-array-dimension.shader_test \
diff --git a/tests/entry-point-overload.shader_test b/tests/entry-point-overload.shader_test
new file mode 100644
index 00000000..9de4dd87
--- /dev/null
+++ b/tests/entry-point-overload.shader_test
@@ -0,0 +1,114 @@
+% The last function to be declared is the one that's used.
+
+[vertex shader]
+void main(out float tex : texcoord, inout float4 pos : sv_position)
+{
+    tex = 0.2;
+}
+
+[pixel shader]
+
+float4 main() : sv_target
+{
+    return 0.1;
+}
+
+float4 main(float tex : texcoord) : sv_target
+{
+    return tex;
+}
+
+[test]
+draw quad
+todo probe (0, 0) rgba (0.2, 0.2, 0.2, 0.2)
+
+[pixel shader]
+
+float4 main(float tex : texcoord) : sv_target
+{
+    return tex;
+}
+
+float4 main() : sv_target
+{
+    return 0.1;
+}
+
+[test]
+draw quad
+probe (0, 0) rgba (0.1, 0.1, 0.1, 0.1)
+
+% Subsequent declarations don't matter.
+
+[pixel shader]
+
+float4 main(float tex : texcoord) : sv_target
+{
+    return tex;
+}
+
+float4 main() : sv_target
+{
+    return 0.1;
+}
+
+float4 main(float tex : texcoord) : sv_target;
+
+[test]
+draw quad
+probe (0, 0) rgba (0.1, 0.1, 0.1, 0.1)
+
+% Rather, it's the last function to be declared, whether it's defined at the time or not.
+
+[pixel shader]
+
+float4 main() : sv_target;
+
+float4 main(float tex : texcoord) : sv_target
+{
+    return tex;
+}
+
+float4 main() : sv_target
+{
+    return 0.1;
+}
+
+[test]
+draw quad
+todo probe (0, 0) rgba (0.2, 0.2, 0.2, 0.2)
+
+[pixel shader]
+
+float4 main();
+float4 main(float tex : texcoord);
+
+float4 main(float tex : texcoord) : sv_target
+{
+    return tex;
+}
+
+float4 main() : sv_target
+{
+    return 0.1;
+}
+
+[test]
+draw quad
+todo probe (0, 0) rgba (0.2, 0.2, 0.2, 0.2)
+
+% Functions that are never defined are ignored.
+
+[pixel shader]
+
+float4 main();
+float4 main(float tex : texcoord) : sv_target;
+
+float4 main() : sv_target
+{
+    return 0.1;
+}
+
+[test]
+draw quad
+probe (0, 0) rgba (0.1, 0.1, 0.1, 0.1)