tests/hlsl: Add lhs cast tests.

Approved-by: Elizabeth Figura (@zfigura)
Approved-by: Henri Verbeet (@hverbeet)
Merge-Request: https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/1350

Makefile.am

@@ -168,6 +168,7 @@ vkd3d_shader_tests = \
 	tests/hlsl/ldexp.shader_test \
 	tests/hlsl/length.shader_test \
 	tests/hlsl/lerp.shader_test \
+	tests/hlsl/lhs-cast.shader_test \
 	tests/hlsl/lit.shader_test \
 	tests/hlsl/load-level.shader_test \
 	tests/hlsl/log.shader_test \

tests/hlsl/lhs-cast.shader_test

@@ -0,0 +1,111 @@
+% lhs casts to the same type don't have effect.
+[pixel shader]
+float4 main() : sv_target
+{
+    float4 p = 0;
+
+    (float4) p = float4(1, 2, 3, 4);
+    return p;
+}
+
+[test]
+draw quad
+probe (0, 0) rgba(1, 2, 3, 4)
+
+
+% Casts with base type changes are only valid on SM1.
+[pixel shader fail(sm>=4) todo]
+float4 main() : sv_target
+{
+    float4 p = 0;
+
+    (int4) p = float4(-1.5, -2.3, 4.7, 0.4);
+    return p;
+}
+
+[test]
+todo draw quad
+probe (0, 0) rgba(-1, -2, 4, 0)
+
+
+% Casts don't actually perform base type changes, only the outtermost one, which
+% I suspect is because the implicit cast on the assignment and not the cast itself.
+[pixel shader fail(sm>=4) todo(sm>=4)]
+float4 main() : sv_target
+{
+    float4 f = 0;
+
+    (float2x2)(int4)(half4) f = float4(1.3, -2.4, 3.3, 4.7);
+    return f;
+}
+
+[test]
+todo(sm>=4) draw quad
+todo probe (0, 0) rgba(1.3, -2.4, 3.3, 4.7)
+
+
+[pixel shader fail(sm>=4) todo]
+float4 main() : sv_target
+{
+    float4 f = 0;
+
+    (int4)(float4)(half4) f = float4(1.3, -2.4, 3.3, 4.7);
+    return f;
+}
+
+[test]
+todo draw quad
+probe (0, 0) rgba(1, -2, 3, 4)
+
+
+[pixel shader fail]
+float4 main() : sv_target
+{
+    float p[5] = {-1, -2, -3, -4, -5};
+    float arr[5] = {1.5, 2.5, 3.5, 4.5, 5.5};
+
+    (int[5]) p = arr;
+    return 0;
+}
+
+
+[pixel shader fail(sm>=6)]
+float4 main() : sv_target
+{
+    float4 f = 0;
+
+    (float2x2) f = float3x2(1, 2, 3, 4, 5, 6);
+    return f;
+}
+
+[test]
+draw quad
+todo probe (0, 0) rgba(1, 2, 3, 4)
+
+
+[pixel shader fail(sm>=4) todo]
+float4 main() : sv_target
+{
+    float4 f = 0;
+
+    ((int4) f).xy = float2(1.4, 3.8);
+    return f;
+}
+
+[test]
+todo draw quad
+probe (0, 0) rgba(1, 3, 0, 0);
+
+
+[pixel shader fail(sm>=4) todo]
+float4 main() : sv_target
+{
+    float4 f = 0;
+
+    ((float3)((int4) f).xyz).xy = float2(1.4, 2.8);
+    return f;
+}
+
+[test]
+todo draw quad
+probe (0, 0) rgba(1.4, 2.8, 0, 0);