#version 330 core
out vec4 FragColor;

in vec2 TexCoord;

uniform sampler2D gPosition;
uniform sampler2D gNormal;
uniform sampler2D gAlbedo;
uniform sampler2D gLightSpacePos;
uniform sampler2DShadow shadowMap;
uniform sampler2D depthTex;

uniform int debugMode; // 0 = final, 1 = position, 2 = normal, 3 = albedo, 4 = lightspace, 5 = depth

void main()
{
    if (debugMode == 1) {
        vec3 v = texture(gPosition, TexCoord).rgb;
        FragColor = vec4(v * 0.01 + 0.5, 1.0);
        return;
    }
    if (debugMode == 2) {
        vec3 n = normalize(texture(gNormal, TexCoord).rgb);
        FragColor = vec4(n * 0.5 + 0.5, 1.0);
        return;
    }
    if (debugMode == 3) {
        FragColor = texture(gAlbedo, TexCoord);
        return;
    }
    if (debugMode == 4) {
        FragColor = texture(gLightSpacePos, TexCoord);
        return;
    }
    if (debugMode == 5) {
        float d = texture(depthTex, TexCoord).r;
        FragColor = vec4(vec3(d), 1.0);
        return;
    }
    FragColor = vec4(0.0);
}