#version 300 es

precision highp float;

uniform sampler2D samp;

uniform bool useTexture;
uniform bool useColor;

in vec2 varTex;
in vec4 varColor;
out vec4 color;

void main() {
    if(useTexture) {
        color = texture(samp, varTex);
        if(useColor) {
            color = vec4(varColor.xyz, color.r);
        }
    } else {
        color = varColor;
    }
}