#version 150

#moj_import <light.glsl>
#moj_import <fog.glsl>

in vec3 Position;
in vec4 Color;
in vec2 UV0;
in ivec2 UV1;
in ivec2 UV2;
in vec3 Normal;

uniform sampler2D Sampler0;
uniform sampler2D Sampler1;
uniform sampler2D Sampler2;

uniform float FogStart;
uniform int FogShape;
uniform mat4 ModelViewMat;
uniform mat4 ProjMat;
uniform mat3 IViewRotMat;
uniform float GameTime;

uniform vec3 Light0_Direction;
uniform vec3 Light1_Direction;

out float vertexDistance;
out vec4 vertexColor;
out vec4 lightColor;
out vec4 overlayColor;
out vec2 texCoord;
out vec3 Pos;
out float transition;

flat out int isCustom;
flat out int isGUI;
flat out int isHand;
flat out int noshadow;

out vec4 maxLightColor;

#moj_import <objmc_tools.glsl>

void main() {
    Pos = Position;
    texCoord = UV0;
    overlayColor = texelFetch(Sampler1, UV1, 0);
    lightColor = minecraft_sample_lightmap(Sampler2, UV2);
    vertexColor = minecraft_mix_light(Light0_Direction, Light1_Direction, Normal, Color);

    maxLightColor = minecraft_sample_lightmap(Sampler2, ivec2(240.0, 240.0));
    
    vec3 normal = (ProjMat * ModelViewMat * vec4(Normal, 0.0)).rgb;

    //objmc
    #define ENTITY
    #define HEAD
    #moj_import<objmc_head.glsl>

    gl_Position = ProjMat * ModelViewMat * (vec4(Pos, 1.0));
    vertexDistance = fog_distance(ModelViewMat, IViewRotMat * Pos, FogShape);
}