mikolalysenko / ao-shader Goto Github PK

Is it possible to use semi-opaque textures with ao-shader? Trying to render this texture which has 70% opacity, alpha blended allowing you to see the blocks behind it when using three.js/voxel-engine:

but with ao-mesher/ao-shader, the blocks are rendered fully opaque:

even if I clear the 'opaque bit' for ao-mesher. The blocks below are visible when the camera clips through but there does not appear to be any alpha blending. I also tried enabling gl.blendFunc() and gl.enable(gl.BLEND), with no effect (example here, lake on the left), so I suspect ao-shader would also need to add support for this to work.

https://github.com/mikolalysenko/ao-shader/blob/master/lib/ao.fsh shows the fragment alpha channel is always 1.0:

if(color.w < 0.5) {
  discard;
}

gl_FragColor = vec4(color.xyz * light, 1.0);

That way different shaders and materials can be built using the same filtering method.

(For example transparent materials, phong lighting, bump mapping, etc.)