voxelcore/res/shaders/ui3d.glslf

in vec2 a_textureCoord;
in vec4 a_color;
out vec4 f_color;

uniform sampler2D u_texture;

void main(){
    f_color = a_color * texture(u_texture, a_textureCoord);
    if (f_color.a == 0.0) discard;
}