Babylon.js/src/Shaders/outline.fragment.fx

#ifdef LOGARITHMICDEPTH
#extension GL_EXT_frag_depth : enable
#endif
uniform vec4 color;

#ifdef ALPHATEST
varying vec2 vUV;
uniform sampler2D diffuseSampler;
#endif
#include<logDepthDeclaration>

void main(void) {
#ifdef ALPHATEST
	if (texture2D(diffuseSampler, vUV).a < 0.4)
		discard;
#endif
#include<logDepthFragment>
	gl_FragColor = color;
}