split_9_shader.gl

//precision highp float;
uniform sampler2D tex;
varying vec2 TextureCoordsVarying;
uniform float playTime;

void main() {
    //TextureCoordsVarying.x = TextureCoordsVarying.x * 0.5 + 0.5;
    //TextureCoordsVarying.y = TextureCoordsVarying.y * 0.5 + 0.5;

    vec2 uv = TextureCoordsVarying.xy;

    if (uv.x <= 1.0 / 3.0) {
        uv.x = uv.x * 3.0;
    }else if (uv.x <= 2.0 / 3.0) {
        uv.x = (uv.x - 1.0 / 3.0) * 3.0;
    }else {
        uv.x = (uv.x - 2.0 / 3.0) * 3.0;
    }
    
    if (uv.y <= 1.0 / 3.0) {
        uv.y = uv.y * 3.0;
    }else if (uv.y <= 2.0 / 3.0) {
        uv.y = (uv.y - 1.0 / 3.0) * 3.0;
    }else {
        uv.y = (uv.y - 2.0 / 3.0) * 3.0;
    }

    gl_FragColor = texture2D(tex, uv);
}