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#version 110
uniform float frequency;
uniform float intensity;
uniform float evolution;
uniform bool vertical;
uniform sampler2D myTexture;
varying vec2 vTexCoord;
void main(void) {
float x = vTexCoord.x;
float y = vTexCoord.y;
if (vertical) {
x -= sin((vTexCoord.y-(evolution*0.01))*frequency)*intensity*0.01;
} else {
y -= sin((vTexCoord.x-(evolution*0.01))*frequency)*intensity*0.01;
}
if (y < 0.0 || y > 1.0 || x < 0.0 || x > 1.0) {
discard;
} else {
vec4 textureColor = texture2D(myTexture, vec2(x, y));
gl_FragColor = vec4(
textureColor.r,
textureColor.g,
textureColor.b,
textureColor.a
);
}
}
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