#version 400 core
out vec4 FragColor;

in vec2 TexCoord;
in vec4 VertexColour;

uniform sampler2D texSampler;
uniform vec4 u_overrideColour;

void main() {
    if (u_overrideColour.a > 0.0) {
        FragColor = u_overrideColour;
        return;
    }

    // sample the texture
    vec4 texColour = texture(texSampler, TexCoord) * VertexColour;

    if (texColour.a < 0.1) discard;

    //FragColor = vec4(0.6, 0.0, 1.0, 1.0);
    FragColor = texColour;
}