[GPU] Simplify local X offsetting with resolution scaling

Switch between even and odd 16-byte element sequences along X by simply
flipping a bit rather than going to a different resolution-scaled group of
pixels, by increasing the size of the group within the constraints imposed
by tiling.

src/xenia/gpu/shaders/resolve_full_64bpp.xesli

@@ -62,8 +62,7 @@ entry_inputs_end_code_begin_compute_xe
   array_buffer_store_xe(
       xe_resolve_dest, dest_address,
       XeEndianSwap64(packed_01, resolve_info.dest_endian_128));
-  dest_address += XeResolveDestRightConsecutiveBlocksOffset(
-                      pixel_index.x, 3u, resolve_info.resolution_scale) >> 4u;
+  dest_address += XeResolveLocalXAddressXor(2u, 3u) >> 4u;
   array_buffer_store_xe(
       xe_resolve_dest, dest_address,
       XeEndianSwap64(packed_23, resolve_info.dest_endian_128));