rsx: Improve vertex textures support

- Adds proper support for vertex textures, including dimensions other than 2D textures
- Minor analyser fixup, removes spurious 'analyser failed' errors
- Minor optimizations for program state tracking

rpcs3/Emu/RSX/Common/ProgramStateCache.h

@@ -31,6 +31,7 @@ namespace program_hash_util
 		{
 			std::bitset<512> instruction_mask;
 			u32 ucode_length;
+			u32 referenced_textures_mask;
 		};
 
 		static size_t get_vertex_program_ucode_hash(const RSXVertexProgram &program);