shader.glsl

struct FragInfo
{
    vec2 start_point;
    vec2 end_point;
    float tile_mode;
    float texture_sampler_y_coord_scale;
    float alpha;
    vec2 half_texel;
};

uniform FragInfo frag_info;

uniform sampler2D texture_sampler;

varying vec2 v_position;

void main()
{
    vec2 _234 = frag_info.end_point - frag_info.start_point;
    float _249 = dot(v_position - frag_info.start_point, _234) / dot(_234, _234);
    vec4 _518 = vec4(0.0);
    do
    {
        bool _327 = frag_info.tile_mode == 3.0;
        bool _340 = false;
        if (_327)
        {
            bool _331 = _249 < 0.0;
            bool _338 = false;
            if (!_331)
            {
                _338 = _249 >= 1.0;
            }
            else
            {
                _338 = _331;
            }
            _340 = _338;
        }
        else
        {
            _340 = _327;
        }
        bool _359 = false;
        if (!_340)
        {
            _359 = _327 ? false : _327;
        }
        else
        {
            _359 = _340;
        }
        if (_359)
        {
            _518 = vec4(0.0);
            break;
        }
        bool _391 = frag_info.tile_mode == 0.0;
        float _511 = 0.0;
        if (_391)
        {
            _511 = clamp(_249, 0.0, 1.0);
        }
        else
        {
            float _512 = 0.0;
            if (frag_info.tile_mode == 1.0)
            {
                _512 = fract(_249);
            }
            else
            {
                float _513 = 0.0;
                if (frag_info.tile_mode == 2.0)
                {
                    float _406 = _249 - 1.0;
                    _513 = abs(((-2.0) * floor(_406 * 0.5) + _406) - 1.0);
                }
                else
                {
                    _513 = _249;
                }
                _512 = _513;
            }
            _511 = _512;
        }
        float _514 = 0.0;
        if (_391)
        {
            _514 = 0.5;
        }
        else
        {
            float _515 = 0.0;
            if (frag_info.tile_mode == 1.0)
            {
                _515 = fract(0.5);
            }
            else
            {
                float _516 = 0.0;
                if (frag_info.tile_mode == 2.0)
                {
                    _516 = abs(((-2.0) * floor(-0.25) + (-0.5)) - 1.0);
                }
                else
                {
                    _516 = 0.5;
                }
                _515 = _516;
            }
            _514 = _515;
        }
        float _474 = mix(frag_info.half_texel.y, 1.0 - frag_info.half_texel.y, _514);
        vec2 _525 = vec2(mix(frag_info.half_texel.x, 1.0 - frag_info.half_texel.x, _511), _474);
        vec2 _517 = vec2(0.0);
        if (frag_info.texture_sampler_y_coord_scale < 0.0)
        {
            vec2 _510 = _525;
            _510.y = 1.0 - _474;
            _517 = _510;
        }
        else
        {
            _517 = _525;
        }
        _518 = texture2D(texture_sampler, _517);
        break;
    } while(false);
    gl_FragData[0] = _518;
    gl_FragData[0] = vec4(gl_FragData[0].xyz * gl_FragData[0].w, gl_FragData[0].w) * frag_info.alpha;
}