tests/hlsl: Add a typed SRV load 16-bit test.

Approved-by: Giovanni Mascellani (@giomasce)
Approved-by: Henri Verbeet (@hverbeet)
Merge-Request: https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/1375

tests/hlsl/texture-load-typed.shader_test

@@ -67,3 +67,24 @@ float4 main() : sv_target
 [test]
 todo(msl) draw quad
 probe (0, 0) rgba (0.8, -3.0, 4294967295.0, 123.0)
+
+[require]
+shader model >= 6.2
+native-16-bit
+
+[srv 0]
+format r32g32b32a32-float
+size (2d, 1, 1)
+-65536.0 -1.0 1.0 65536.0
+
+[pixel shader]
+Texture2D<half4> t0;
+
+float4 main() : sv_target
+{
+    return t0.Load(int3(0, 0, 0));
+}
+
+[test]
+draw quad
+probe (0, 0) rgba(-65504.0, -1.0, 1.0, 65504.0)