25 lines
553 B
Python
25 lines
553 B
Python
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$input v_color0, v_texcoord0
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#include "../../common/common.sh"
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SAMPLERCUBE(s_texColor, 0);
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void main()
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{
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vec4 color = textureCube(s_texColor, v_texcoord0.xyz);
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int index = int(v_texcoord0.w*4.0 + 0.5);
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float rgba[4];
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rgba[0] = color.z;
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rgba[1] = color.y;
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rgba[2] = color.x;
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rgba[3] = color.w;
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float dist = rgba[index];
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float dx = length(dFdx(v_texcoord0.xyz) );
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float dy = length(dFdy(v_texcoord0.xyz) );
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float w = 16.0*0.5*(dx+dy);
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float alpha = smoothstep(0.5-w, 0.5+w, dist);
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gl_FragColor = vec4(v_color0.xyz, v_color0.w*alpha);
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}
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