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35 lines
929 B
GLSL
35 lines
929 B
GLSL
#version 120
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uniform sampler2D DiffuseSampler;
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varying vec2 texCoord;
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varying vec2 oneTexel;
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void main(){
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vec4 c = texture2D(DiffuseSampler, texCoord);
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vec4 u = texture2D(DiffuseSampler, texCoord + vec2( 0.0, -oneTexel.y));
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vec4 d = texture2D(DiffuseSampler, texCoord + vec2( 0.0, oneTexel.y));
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vec4 l = texture2D(DiffuseSampler, texCoord + vec2(-oneTexel.x, 0.0));
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vec4 r = texture2D(DiffuseSampler, texCoord + vec2( oneTexel.x, 0.0));
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vec4 nc = normalize(c);
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vec4 nu = normalize(u);
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vec4 nd = normalize(d);
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vec4 nl = normalize(l);
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vec4 nr = normalize(r);
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float du = dot(nc, nu);
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float dd = dot(nc, nd);
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float dl = dot(nc, nl);
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float dr = dot(nc, nr);
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float i = 64.0;
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float f = 1.0;
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f += (du * i) - (dd * i);
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f += (dr * i) - (dl * i);
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vec4 color = c * clamp(f, 0.5, 2);
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gl_FragColor = vec4(color.rgb, c.a);
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}
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