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21 lines
747 B
GLSL
21 lines
747 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 center = texture2D(DiffuseSampler, texCoord);
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vec4 left = texture2D(DiffuseSampler, texCoord - vec2(oneTexel.x, 0.0));
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vec4 right = texture2D(DiffuseSampler, texCoord + vec2(oneTexel.x, 0.0));
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vec4 up = texture2D(DiffuseSampler, texCoord - vec2(0.0, oneTexel.y));
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vec4 down = texture2D(DiffuseSampler, texCoord + vec2(0.0, oneTexel.y));
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vec4 leftDiff = center - left;
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vec4 rightDiff = center - right;
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vec4 upDiff = center - up;
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vec4 downDiff = center - down;
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vec4 total = clamp(leftDiff + rightDiff + upDiff + downDiff, 0.0, 1.0);
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gl_FragColor = vec4(total.rgb, center.a);
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}
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