#version 330 core
layout (std140) uniform uPostProcess {
    int curTime;

    int dt;
    vec3 colorMod;
    float blurIntensity;
    float shakeIntensity;
    float shakeTime;
    int effects;

    vec3 colorMod_hud;
    float blurIntensity_hud;
    float shakeIntensity_hud;
    float shakeTime_hud;
    int effects_hud;
};
out vec4 FragColor;

in vec2 texCoord;

uniform int edge_kernel[9];
uniform float blur_kernel[9];

const float offset = 1.0 / 300.0;  

uniform sampler2D screenTexture;
uniform bool worldOrHud;

void main()
{
    if (worldOrHud == false)
    {
        /*
        vec2 offsets[9] = vec2[](
            vec2(-offset,  offset), // top-left
            vec2( 0.0f,    offset), // top-center
            vec2( offset,  offset), // top-right
            vec2(-offset,  0.0f),   // center-left
            vec2( 0.0f,    0.0f),   // center-center
            vec2( offset,  0.0f),   // center-right
            vec2(-offset, -offset), // bottom-left
            vec2( 0.0f,   -offset), // bottom-center
            vec2( offset, -offset)  // bottom-right    
        );
        vec2 tex_offset = 1.0 / vec2(800.0, 600.0); // gets size of single texel
        vec4 result = vec4(0.0);
        vec4 sampleTex[9];
        for (int i = 0; i < 9; i++)
        {
            sampleTex[i] = vec4(texture(screenTexture, texCoord.st + offsets[i]));
        }
        for (int i = 0; i < 9; i++)
            result += sampleTex[i] * edge_kernel[i];
        */
        //FragColor = mix(vec4(result), vec4(0.4, 0.0, 0.7, 1.0), 0.2);
        if ((effects & (1 << 1)) != 0) 
        {
            //FragColor = mix(texture(screenTexture, texCoord), vec4(1.0, 0.8, 0.0, 1.0), 0.3 - (1.0 / shakeTime) * shakeIntensity);
            FragColor = texture(screenTexture, texCoord);
        }
        else
        {
            FragColor = texture(screenTexture, texCoord);
        }
    }
}