uniform mat4 u_Color;
varying vec2 v_TexCoord;
varying vec2 v_TexCoord2;
varying vec2 v_TexCoord3;
varying vec2 v_Position;
uniform sampler2D u_Tex0;
uniform float u_Time;
uniform vec2 u_Resolution;

void main()
{
    vec4 texcolor = texture2D(u_Tex0, v_TexCoord2);
    vec4 baseColor = texture2D(u_Tex0, v_TexCoord);
    
    float alpha = 1.0 - min(1.0, length(v_TexCoord - 0.5) * 2.0);
    alpha *= smoothstep(0.0, 0.3, texcolor.r);
    alpha *= smoothstep(0.0, 0.3, texcolor.g);
    alpha *= smoothstep(0.0, 0.3, texcolor.b);
    
    gl_FragColor = mix(baseColor, vec4(1.0, 1.0, 1.0, alpha), 0.7);
}