vkd3d-shader/hlsl: Handle uppercase regset names in register().

Approved-by: Giovanni Mascellani (@giomasce)
Approved-by: Zebediah Figura (@zfigura)
Approved-by: Henri Verbeet (@hverbeet)
Approved-by: Alexandre Julliard (@julliard)
Merge-Request: https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/162

libs/vkd3d-shader/hlsl.y

@@ -1014,7 +1014,7 @@ static struct hlsl_reg_reservation parse_reg_reservation(const char *reg_string)
         FIXME("Unsupported register reservation syntax.\n");
         return reservation;
     }
-    reservation.reg_type = reg_string[0];
+    reservation.reg_type = ascii_tolower(reg_string[0]);
     return reservation;
 }
 

tests/cbuffer.shader_test

@@ -1,3 +1,21 @@
+% Uppercase register set names
+[pixel shader]
+cbuffer Constants : register(B1)
+{
+};
+Texture2D tex : register(T1);
+float4 foo : register(C0);
+
+float4 main() : sv_target
+{
+    return foo;
+}
+
+[test]
+uniform 0 float4 1.0 2.0 3.0 4.0
+draw quad
+probe all rgba (1.0, 2.0, 3.0, 4.0)
+
 [pixel shader]
 // Test empty constant buffer.
 cbuffer Constants : register(b1)
@@ -16,7 +34,6 @@ uniform 0 float4 1.0 2.0 3.0 4.0
 draw quad
 probe all rgba (1.0, 2.0, 3.0, 4.0)
 
-
 % SM1 buffer offset allocation follows different rules than SM4.
 % Those would have to be tested separately.
 [require]
@@ -611,7 +628,7 @@ float4 main() : sv_target
 cbuffer buffer
 {
     float4 foo : packoffset(c0);
-    Texture2D tex : register(t1);
+    Texture2D tex : register(T1);
 }
 
 float4 main() : sv_target

tests/uav.shader_test

@@ -121,6 +121,20 @@ float4 main() : sv_target1
 draw quad
 probe uav 3 (0, 0) rgba (0.9, 0.8, 0.7, 0.6)
 
+% Uppercase register set name
+[pixel shader]
+RWTexture2D<float4> u : register(U3);
+
+float4 main() : sv_target1
+{
+    u[uint2(0, 0)] = float4(0.9, 0.8, 0.7, 0.6);
+    return 0;
+}
+
+[test]
+draw quad
+probe uav 3 (0, 0) rgba (0.9, 0.8, 0.7, 0.6)
+
 % Test that we can declare and use an array of UAVs.
 
 [uav 2]