wip: creating 3d texture node buffer

src/shaders/shader.frag

@@ -12,6 +12,9 @@ layout(set=0, binding=0) uniform Uniforms
     vec3 cam_pos;
 };
 
+layout(set = 1, binding = 0) uniform texture3D node_tex;
+layout(set = 1, binding = 1) uniform sampler node_sampl;
+
 // Defines
 #define PI 3.141592
 #define EPSILON 0.01