wined3d: Support color keyed WINED3DFMT_B8G8R8A8_UNORM surfaces.

dlls/wined3d/state.c

@@ -538,12 +538,7 @@ static void state_alpha(struct wined3d_context *context, const struct wined3d_st
             struct wined3d_surface *surf = surface_from_resource(texture->sub_resources[0]);
 
             if (surf->CKeyFlags & WINEDDSD_CKSRCBLT)
-            {
-                /* The surface conversion does not do color keying conversion for surfaces that have an alpha
-                 * channel on their own. Likewise, the alpha test shouldn't be set up for color keying if the
-                 * surface has alpha bits */
-                if (!surf->resource.format->alpha_mask) enable_ckey = TRUE;
-            }
+                enable_ckey = TRUE;
         }
     }
 

dlls/wined3d/surface.c

@@ -4554,6 +4554,14 @@ HRESULT d3dfmt_get_conv(const struct wined3d_surface *surface, BOOL need_alpha_c
             }
             break;
 
+        case WINED3DFMT_B8G8R8A8_UNORM:
+            if (colorkey_active)
+            {
+                *conversion_type = WINED3D_CT_CK_ARGB32;
+                format->conv_byte_count = 4;
+            }
+            break;
+
         default:
             break;
     }
@@ -4765,6 +4773,26 @@ static HRESULT d3dfmt_convert_surface(const BYTE *src, BYTE *dst, UINT pitch, UI
         }
         break;
 
+        case WINED3D_CT_CK_ARGB32:
+        {
+            unsigned int x, y;
+            for (y = 0; y < height; ++y)
+            {
+                source = src + pitch * y;
+                dest = dst + outpitch * y;
+                for (x = 0; x < width; ++x)
+                {
+                    DWORD color = *(const DWORD *)source;
+                    if (color_in_range(&surface->src_blt_color_key, color))
+                        color &= ~0xff000000;
+                    *(DWORD*)dest = color;
+                    source += 4;
+                    dest += 4;
+                }
+            }
+        }
+        break;
+
         default:
             ERR("Unsupported conversion type %#x.\n", conversion_type);
     }

dlls/wined3d/wined3d_private.h

@@ -2192,6 +2192,7 @@ enum wined3d_conversion_type
     WINED3D_CT_CK_5551,
     WINED3D_CT_CK_RGB24,
     WINED3D_CT_RGB32_888,
+    WINED3D_CT_CK_ARGB32,
 };
 
 HRESULT d3dfmt_get_conv(const struct wined3d_surface *surface, BOOL need_alpha_ck, BOOL use_texturing,