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ngokevin/gist:fc3e3a6be9d06b377cddb20bab1766ec

Created September 14, 2018 23:42
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fade shader
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gistfile1.txt
void main() {
float alpha = 1.0 - smoothstep(2.25, 3.75, length(vWorldPosition.xz));
vec4 tex = texture2D(src, vUv) * vec4(color, 1.0);
gl_FragColor = vec4(tex.xyz, min(1.0, tex.w * alpha * opacity));
}
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