//Settings//
#include "/lib/settings.glsl"

//Varyings//
varying vec2 texCoord;

//Fragment Shader///////////////////////////////////////////////////////////////////////////////////
#ifdef FSH

    //Uniforms//
    uniform float viewWidth, viewHeight, aspectRatio;

    #if AA > 1
        uniform int frameCounter;
        uniform float far, near;
    #endif

    uniform sampler2D colortex1;

    #if AA > 0
        #ifndef KEEP_AA_ON_WATER
            #if MC_VERSION >= 11605
                uniform sampler2D colortex8;
            #endif
        #endif
    #endif

    #if AA > 1
        uniform vec3 cameraPosition, previousCameraPosition;

        uniform mat4 gbufferPreviousProjection, gbufferProjectionInverse;
        uniform mat4 gbufferPreviousModelView, gbufferModelViewInverse;

        uniform sampler2D colortex2;
        uniform sampler2D colortex7;
        uniform sampler2D depthtex1;
    #endif

    //Optifine Constants//
    #ifdef LIGHTSHAFT
    const bool colortex1MipmapEnabled = true;
    #endif
    //Common Functions//

    #if AA > 1
    float GetLinearDepth(float depth) {
        return (2.0 * near) / (far + near - depth * (far - near));
    }
    #endif

    //Includes//

    #if AA == 2
    #ifdef TAA_VERSION_1
    #include "/lib/antialiasing/taa.glsl"
    #endif

    #elif AA == 3
    #ifdef TAA_VERSION_1
    #include "/lib/antialiasing/taa.glsl"
    #endif

    #elif AA == 4
    #ifdef TAA_VERSION_2
    #include "/lib/antialiasing/taa.glsl"
    #endif

    #elif AA == 5
    #ifdef TAA_VERSION_2
    #include "/lib/antialiasing/taa.glsl"
    #endif

    #endif

    //Program//
    void main(){
        vec3 color = textureLod(colortex1, texCoord, 0.0).rgb;

        #if AA > 0
            #ifndef KEEP_AA_ON_WATER
                #if MC_VERSION >= 11605
                    bool water = textureLod(colortex8, texCoord, 0.0).r > 0.5;
                #else
                    bool water = false;
                #endif
            #else
                    bool water = false;
            #endif
        #endif

        #if AA == 2 || AA == 3 || AA == 4 || AA == 5
        vec4 prev = vec4(textureLod(colortex2, texCoord, 0.0).r, 0.0, 0.0, 0.0);
        if (!water){
            TAA(color, prev);
        }
        #endif

        /*DRAWBUFFERS:1*/
        gl_FragData[0] = vec4(color, 1.0);

        #if AA > 1

        /*DRAWBUFFERS:12*/
        gl_FragData[1] = vec4(prev);

        #endif
    }

#endif

//Vertex Shader/////////////////////////////////////////////////////////////////////////////////////
#ifdef VSH

    //Program//
    void main(){
        texCoord=gl_MultiTexCoord0.xy;

        gl_Position=ftransform();
    }

#endif