29 lines
769 B
Python
29 lines
769 B
Python
$input v_color0, v_texcoord0
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#include "../../common/common.sh"
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SAMPLERCUBE(u_texColor, 0);
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void main()
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{
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int index = int(v_texcoord0.w*4.0 + 0.5);
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vec3 dx3 = dFdx(v_texcoord0.xyz);
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vec3 dy3 = dFdy(v_texcoord0.xyz);
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vec3 decal = 0.166667 * dx3;
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vec3 sampleLeft = v_texcoord0.xyz - decal;
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vec3 sampleRight = v_texcoord0.xyz + decal;
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float left_dist = textureCube(u_texColor, sampleLeft).zyxw[index];
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float right_dist = textureCube(u_texColor, sampleRight).zyxw[index];
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float dist = 0.5 * (left_dist + right_dist);
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float dx = length(dx3);
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float dy = length(dy3);
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float w = 16.0*0.5*(dx+dy);
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vec3 sub_color = smoothstep(0.5 - w, 0.5 + w, vec3(left_dist, dist, right_dist));
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gl_FragColor.xyz = sub_color*v_color0.w;
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gl_FragColor.w = dist*v_color0.w;
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}
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