#version 430

layout (location = 0) out vec3 worldPosition;
layout (location = 1) out vec3 worldNormal;
layout (location = 2) out vec4 worldColor;

layout (binding = 0) uniform sampler2D samp;

uniform bool useTexture;
uniform bool useColor;
uniform bool useMixColor;
uniform vec4 mixColor;
uniform bool useNormals;

in vec3 varPosition;
in vec2 varTextureCoord;
in vec4 varColor;
in vec3 varNormal;

void main(void)
{
    vec4 color = vec4(0, 0, 0, 1);
    if(useTexture)
    {
        color = texture(samp, varTextureCoord);
        if(useColor)
        {
            if(useMixColor)
            {
                color = (color + mixColor) * 0.5;
            }
            else
            {
                color = vec4(varColor.xyz, color.w);
            }
        }
    }
    else
    {
        color = varColor;
    }

    worldPosition = varPosition;
    worldNormal = normalize(varNormal);
    worldColor = color;
}