Switch to using uniform buffer for MVP matrices

vert.glsl

@@ -5,7 +5,7 @@ layout(location = 1) in vec3 normal;
 
 layout(location = 0) out vec3 frag_normal;
 
-layout(push_constant) uniform MVP {
+layout(binding = 0) uniform mvp_t {
 	mat4 model;
 	mat4 view;
 	mat4 proj;