tests: Move HLSL tests to a subdirectory.

Approved-by: Giovanni Mascellani (@giomasce)
Approved-by: Francisco Casas (@fcasas)
Approved-by: Henri Verbeet (@hverbeet)
Approved-by: Alexandre Julliard (@julliard)
Merge-Request: https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/248

tests/hlsl/ldexp.shader_test

@@ -0,0 +1,58 @@
+[pixel shader]
+uniform float4 x;
+uniform float4 y;
+
+float4 main() : SV_TARGET
+{
+    return ldexp(x, y);
+}
+
+[test]
+uniform 0 float4 2.0 3.0 4.0 5.0
+uniform 4 float4 0.0 -10.0 10.0 100.0
+draw quad
+probe all rgba (2.0, 0.00292968750, 4096.0, 6.33825300e+030)
+
+[require]
+shader model >= 4.0
+
+[pixel shader]
+uniform int4 x;
+uniform int4 y;
+
+float4 main() : SV_TARGET
+{
+    return ldexp(x, y);
+}
+
+[test]
+uniform 0 int4 2 3 4 5
+uniform 4 int4 0 -10 10 100
+draw quad
+probe all rgba (2.0, 0.00292968750, 4096.0, 6.33825300e+030)
+
+
+[pixel shader]
+float4 main() : sv_target
+{
+    float2x3 a = {1, 2, 3, 4, 5, 6};
+    float3x2 b = {6, 5, 4, 3, 2, 1};
+
+    float2x2 r = ldexp(a, b);
+    return float4(r);
+}
+
+[test]
+draw quad
+probe all rgba (64.0, 64.0, 64.0, 40.0)
+
+
+[pixel shader fail]
+float4 main() : sv_target
+{
+    float2x2 a = {1, 2, 3, 4};
+    float1 b = {2};
+
+    ldexp(a, b);
+    return 0;
+}