39 lines
820 B
Plaintext
39 lines
820 B
Plaintext
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#ifdef GL_ES
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#define LOWP lowp
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precision mediump float;
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#else
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#define LOWP
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#endif
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varying LOWP vec4 vColor;
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varying vec2 vTexCoord;
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uniform sampler2D u_texture;
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void main() {
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vec4 sum = vec4(0);
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vec2 texcoord = vTexCoord;
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int j;
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int i;
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for (i = -4; i < 4; i++) {
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for (j = -3; j < 3; j++) {
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sum += texture2D(u_texture, texcoord + vec2(j, i)*0.004) * 0.25;
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}
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}
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if (texture2D(u_texture, texcoord).r < 0.3) {
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gl_FragColor = vec4(sum * sum * 0.012 + texture2D(u_texture, texcoord))
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* vColor;
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} else {
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if (texture2D(u_texture, texcoord).r < 0.5) {
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gl_FragColor = vec4(
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sum * sum * 0.009 + texture2D(u_texture, texcoord))
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* vColor;
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} else {
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gl_FragColor = vec4(
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sum * sum * 0.0075 + texture2D(u_texture, texcoord))
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* vColor;
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}
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}
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}
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