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2018-07-17 14:15:37 +02:00

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varying vec2 uv;
uniform sampler2D texture;
void main() {
vec3 sample = texture2D(texture,uv).rgb;
gl_FragColor.rgb = ((sample - vec3(0.5)) * 2.0 + gl_Color.rgb) * gl_Color.a;
//gl_FragColor.rgb = (sample * 2.0 * gl_Color.rgb) * gl_Color.a;
gl_FragColor.a = 0.0;
}