VoxelEngine/Objects/Cube/cube_geometry.glsl

#version 410

layout(points) in;
layout(triangle_strip,max_vertices=24) out;

uniform mat4 projModelViewMatrix;
uniform mat3 normalMatrix;
uniform mat3 rotMatrix;

uniform mat4 lightProjModelViewMatrix[7];
uniform int numLights;
uniform float width;
uniform float height;
uniform float near;
uniform float far;

layout(location = 0) in vec3 colorgeo[1];
layout(location = 0) out vec3 colorout;
layout(location = 1) out vec3 normal;
layout(location = 2) out vec3 pos;
layout(location = 3) out vec4 lightviewpos[3];

/*
        lightpos[i] = lightProjModelViewMatrix[i] * gl_Position;
        lightpos[i] = lightpos[i] / lightpos[i].w;
        lightpos[i].z = (2.0 * near) / (far + near - lightpos[i].z * (far - near));
        lightpos[i] = vec4(lightpos[i].x/2.0 + 0.5,lightpos[i].y/2.0 + 0.5,lightpos[i].z,lightpos[i].w);
*/

void main(){
    //hinten

    gl_Position = (gl_in[0].gl_Position + vec4(rotMatrix * vec3(0.5,-0.5,-0.5),0));
    for(int i = 0;i < numLights; i++){
        lightviewpos[i] = lightProjModelViewMatrix[i] * gl_Position;
        lightviewpos[i] = lightviewpos[i] / lightviewpos[i].w;
        lightviewpos[i] = vec4(lightviewpos[i].x/2.0 + 0.5,lightviewpos[i].y/2.0 + 0.5,lightviewpos[i].z/2.0 + 0.5,lightviewpos[i].w);
        lightviewpos[i].z = (2.0 * near) / (far + near - lightviewpos[i].z * (far - near));
    }
    gl_Position = projModelViewMatrix * gl_Position;
    colorout = colorgeo[0];
    normal = normalize(rotMatrix * vec3(0,0,-1));
    pos = gl_Position.xyz;
    EmitVertex();

    gl_Position = (gl_in[0].gl_Position + vec4(rotMatrix * vec3(-0.5,-0.5,-0.5),0));
    for(int i = 0;i < numLights; i++){
        lightviewpos[i] = lightProjModelViewMatrix[i] * gl_Position;
        lightviewpos[i] = lightviewpos[i] / lightviewpos[i].w;
        lightviewpos[i] = vec4(lightviewpos[i].x/2.0 + 0.5,lightviewpos[i].y/2.0 + 0.5,lightviewpos[i].z/2.0 + 0.5,lightviewpos[i].w);
        lightviewpos[i].z = (2.0 * near) / (far + near - lightviewpos[i].z * (far - near));
    }
    gl_Position = projModelViewMatrix * gl_Position;
    colorout = colorgeo[0];
    normal = normalize(rotMatrix * vec3(0,0,-1));
    pos = gl_Position.xyz;
    EmitVertex();

    gl_Position = (gl_in[0].gl_Position + vec4(rotMatrix * vec3(0.5,0.5,-0.5),0));
    for(int i = 0;i < numLights; i++){
        lightviewpos[i] = lightProjModelViewMatrix[i] * gl_Position;
        lightviewpos[i] = lightviewpos[i] / lightviewpos[i].w;
        lightviewpos[i] = vec4(lightviewpos[i].x/2.0 + 0.5,lightviewpos[i].y/2.0 + 0.5,lightviewpos[i].z/2.0 + 0.5,lightviewpos[i].w);
        lightviewpos[i].z = (2.0 * near) / (far + near - lightviewpos[i].z * (far - near));
    }
    gl_Position = projModelViewMatrix * gl_Position;
    colorout = colorgeo[0];
    normal = normalize(rotMatrix * vec3(0,0,-1));
    pos = gl_Position.xyz;
    EmitVertex();

    gl_Position = (gl_in[0].gl_Position + vec4(rotMatrix * vec3(-0.5,0.5,-0.5),0));
    for(int i = 0;i < numLights; i++){
        lightviewpos[i] = lightProjModelViewMatrix[i] * gl_Position;
        lightviewpos[i] = lightviewpos[i] / lightviewpos[i].w;
        lightviewpos[i] = vec4(lightviewpos[i].x/2.0 + 0.5,lightviewpos[i].y/2.0 + 0.5,lightviewpos[i].z/2.0 + 0.5,lightviewpos[i].w);
        lightviewpos[i].z = (2.0 * near) / (far + near - lightviewpos[i].z * (far - near));
    }
    gl_Position = projModelViewMatrix * gl_Position;
    colorout = colorgeo[0];
    normal = normalize(rotMatrix * vec3(0,0,-1));
    pos = gl_Position.xyz;
    EmitVertex();

    EndPrimitive();

    //vorne
    gl_Position = (gl_in[0].gl_Position + vec4(rotMatrix * vec3(-0.5,0.5,0.5),0));
    for(int i = 0;i < numLights; i++){
       lightviewpos[i] = lightProjModelViewMatrix[i] * gl_Position;
        lightviewpos[i] = lightviewpos[i] / lightviewpos[i].w;
        lightviewpos[i] = vec4(lightviewpos[i].x/2.0 + 0.5,lightviewpos[i].y/2.0 + 0.5,lightviewpos[i].z/2.0 + 0.5,lightviewpos[i].w);
        lightviewpos[i].z = (2.0 * near) / (far + near - lightviewpos[i].z * (far - near));
    }
    gl_Position = projModelViewMatrix * gl_Position;
    colorout = colorgeo[0];
    normal = normalize(rotMatrix * vec3(0,0,1));
    pos = gl_Position.xyz;
    EmitVertex();

    gl_Position = (gl_in[0].gl_Position + vec4(rotMatrix * vec3(-0.5,-0.5,0.5),0));
    for(int i = 0;i < numLights; i++){
        lightviewpos[i] = lightProjModelViewMatrix[i] * gl_Position;
        lightviewpos[i] = lightviewpos[i] / lightviewpos[i].w;
        lightviewpos[i] = vec4(lightviewpos[i].x/2.0 + 0.5,lightviewpos[i].y/2.0 + 0.5,lightviewpos[i].z/2.0 + 0.5,lightviewpos[i].w);
        lightviewpos[i].z = (2.0 * near) / (far + near - lightviewpos[i].z * (far - near));
    }
    gl_Position = projModelViewMatrix * gl_Position;
    colorout = colorgeo[0];
    normal = normalize(rotMatrix * vec3(0,0,1));
    pos = gl_Position.xyz;
    EmitVertex();

    gl_Position = (gl_in[0].gl_Position + vec4(rotMatrix * vec3(0.5,0.5,0.5),0));
    for(int i = 0;i < numLights; i++){
        lightviewpos[i] = lightProjModelViewMatrix[i] * gl_Position;
        lightviewpos[i] = lightviewpos[i] / lightviewpos[i].w;
        lightviewpos[i] = vec4(lightviewpos[i].x/2.0 + 0.5,lightviewpos[i].y/2.0 + 0.5,lightviewpos[i].z/2.0 + 0.5,lightviewpos[i].w);
        lightviewpos[i].z = (2.0 * near) / (far + near - lightviewpos[i].z * (far - near));
    }
    gl_Position = projModelViewMatrix * gl_Position;
    colorout = colorgeo[0];
    normal = normalize(rotMatrix * vec3(0,0,1));
    pos = gl_Position.xyz;
    EmitVertex();

    gl_Position = (gl_in[0].gl_Position + vec4(rotMatrix * vec3(0.5,-0.5,0.5),0));
    for(int i = 0;i < numLights; i++){
        lightviewpos[i] = lightProjModelViewMatrix[i] * gl_Position;
        lightviewpos[i] = lightviewpos[i] / lightviewpos[i].w;
        lightviewpos[i] = vec4(lightviewpos[i].x/2.0 + 0.5,lightviewpos[i].y/2.0 + 0.5,lightviewpos[i].z/2.0 + 0.5,lightviewpos[i].w);
        lightviewpos[i].z = (2.0 * near) / (far + near - lightviewpos[i].z * (far - near));
    }
    gl_Position = projModelViewMatrix * gl_Position;
    colorout = colorgeo[0];
    normal = normalize(rotMatrix * vec3(0,0,1));
    pos = gl_Position.xyz;
    EmitVertex();

    EndPrimitive();

    //oben
    gl_Position = (gl_in[0].gl_Position + vec4(rotMatrix * vec3(0.5,0.5,-0.5),0));
    for(int i = 0;i < numLights; i++){
        lightviewpos[i] = lightProjModelViewMatrix[i] * gl_Position;
        lightviewpos[i] = lightviewpos[i] / lightviewpos[i].w;
        lightviewpos[i] = vec4(lightviewpos[i].x/2.0 + 0.5,lightviewpos[i].y/2.0 + 0.5,lightviewpos[i].z/2.0 + 0.5,lightviewpos[i].w);
        lightviewpos[i].z = (2.0 * near) / (far + near - lightviewpos[i].z * (far - near));
    }
    gl_Position = projModelViewMatrix * gl_Position;
    colorout = colorgeo[0];
    normal = normalize(rotMatrix * vec3(0,1,0));
    pos = gl_Position.xyz;
    EmitVertex();

    gl_Position = (gl_in[0].gl_Position + vec4(rotMatrix * vec3(-0.5,0.5,-0.5),0));
    for(int i = 0;i < numLights; i++){
        lightviewpos[i] = lightProjModelViewMatrix[i] * gl_Position;
        lightviewpos[i] = lightviewpos[i] / lightviewpos[i].w;
        lightviewpos[i] = vec4(lightviewpos[i].x/2.0 + 0.5,lightviewpos[i].y/2.0 + 0.5,lightviewpos[i].z/2.0 + 0.5,lightviewpos[i].w);
        lightviewpos[i].z = (2.0 * near) / (far + near - lightviewpos[i].z * (far - near));
    }
    gl_Position = projModelViewMatrix * gl_Position;
    colorout = colorgeo[0];
    normal = normalize(rotMatrix * vec3(0,1,0));
    pos = gl_Position.xyz;
    EmitVertex();

    gl_Position = (gl_in[0].gl_Position + vec4(rotMatrix * vec3(0.5,0.5,0.5),0));
    for(int i = 0;i < numLights; i++){
        lightviewpos[i] = lightProjModelViewMatrix[i] * gl_Position;
        lightviewpos[i] = lightviewpos[i] / lightviewpos[i].w;
        lightviewpos[i] = vec4(lightviewpos[i].x/2.0 + 0.5,lightviewpos[i].y/2.0 + 0.5,lightviewpos[i].z/2.0 + 0.5,lightviewpos[i].w);
        lightviewpos[i].z = (2.0 * near) / (far + near - lightviewpos[i].z * (far - near));
    }
    gl_Position = projModelViewMatrix * gl_Position;
    colorout = colorgeo[0];
    normal = normalize(rotMatrix * vec3(0,1,0));
    pos = gl_Position.xyz;
    EmitVertex();

    gl_Position = (gl_in[0].gl_Position + vec4(rotMatrix * vec3(-0.5,0.5,0.5),0));
    for(int i = 0;i < numLights; i++){
        lightviewpos[i] = lightProjModelViewMatrix[i] * gl_Position;
        lightviewpos[i] = lightviewpos[i] / lightviewpos[i].w;
        lightviewpos[i] = vec4(lightviewpos[i].x/2.0 + 0.5,lightviewpos[i].y/2.0 + 0.5,lightviewpos[i].z/2.0 + 0.5,lightviewpos[i].w);
        lightviewpos[i].z = (2.0 * near) / (far + near - lightviewpos[i].z * (far - near));
    }
    gl_Position = projModelViewMatrix * gl_Position;
    colorout = colorgeo[0];
    normal = normalize(rotMatrix * vec3(0,1,0));
    pos = gl_Position.xyz;
    EmitVertex();

    EndPrimitive();

    //unten
    gl_Position = (gl_in[0].gl_Position + vec4(rotMatrix * vec3(-0.5,-0.5,0.5),0));
    for(int i = 0;i < numLights; i++){
        lightviewpos[i] = lightProjModelViewMatrix[i] * gl_Position;
        lightviewpos[i] = lightviewpos[i] / lightviewpos[i].w;
        lightviewpos[i] = vec4(lightviewpos[i].x/2.0 + 0.5,lightviewpos[i].y/2.0 + 0.5,lightviewpos[i].z/2.0 + 0.5,lightviewpos[i].w);
        lightviewpos[i].z = (2.0 * near) / (far + near - lightviewpos[i].z * (far - near));
    }
    gl_Position = projModelViewMatrix * gl_Position;
    colorout = colorgeo[0];
    normal = normalize(rotMatrix * vec3(0,-1,0));
    pos = gl_Position.xyz;
    EmitVertex();

    gl_Position = (gl_in[0].gl_Position + vec4(rotMatrix * vec3(-0.5,-0.5,-0.5),0));
    for(int i = 0;i < numLights; i++){
        lightviewpos[i] = lightProjModelViewMatrix[i] * gl_Position;
        lightviewpos[i] = lightviewpos[i] / lightviewpos[i].w;
        lightviewpos[i] = vec4(lightviewpos[i].x/2.0 + 0.5,lightviewpos[i].y/2.0 + 0.5,lightviewpos[i].z/2.0 + 0.5,lightviewpos[i].w);
        lightviewpos[i].z = (2.0 * near) / (far + near - lightviewpos[i].z * (far - near));
    }
    gl_Position = projModelViewMatrix * gl_Position;
    colorout = colorgeo[0];
    normal = normalize(rotMatrix * vec3(0,-1,0));
    pos = gl_Position.xyz;
    EmitVertex();

    gl_Position = (gl_in[0].gl_Position + vec4(rotMatrix * vec3(0.5,-0.5,0.5),0));
    for(int i = 0;i < numLights; i++){
        lightviewpos[i] = lightProjModelViewMatrix[i] * gl_Position;
        lightviewpos[i] = lightviewpos[i] / lightviewpos[i].w;
        lightviewpos[i] = vec4(lightviewpos[i].x/2.0 + 0.5,lightviewpos[i].y/2.0 + 0.5,lightviewpos[i].z/2.0 + 0.5,lightviewpos[i].w);
        lightviewpos[i].z = (2.0 * near) / (far + near - lightviewpos[i].z * (far - near));
    }
    gl_Position = projModelViewMatrix * gl_Position;
    colorout = colorgeo[0];
    normal = normalize(rotMatrix * vec3(0,-1,0));
    pos = gl_Position.xyz;
    EmitVertex();

    gl_Position = (gl_in[0].gl_Position + vec4(rotMatrix * vec3(0.5,-0.5,-0.5),0));
    for(int i = 0;i < numLights; i++){
        lightviewpos[i] = lightProjModelViewMatrix[i] * gl_Position;
        lightviewpos[i] = lightviewpos[i] / lightviewpos[i].w;
        lightviewpos[i] = vec4(lightviewpos[i].x/2.0 + 0.5,lightviewpos[i].y/2.0 + 0.5,lightviewpos[i].z/2.0 + 0.5,lightviewpos[i].w);
        lightviewpos[i].z = (2.0 * near) / (far + near - lightviewpos[i].z * (far - near));
    }
    gl_Position = projModelViewMatrix * gl_Position;
    colorout = colorgeo[0];
    normal = normalize(rotMatrix * vec3(0,-1,0));
    pos = gl_Position.xyz;
    EmitVertex();

    EndPrimitive();

    //inks
    gl_Position = (gl_in[0].gl_Position + vec4(rotMatrix * vec3(-0.5,0.5,-0.5),0));
    for(int i = 0;i < numLights; i++){
        lightviewpos[i] = lightProjModelViewMatrix[i] * gl_Position;
        lightviewpos[i] = lightviewpos[i] / lightviewpos[i].w;
        lightviewpos[i] = vec4(lightviewpos[i].x/2.0 + 0.5,lightviewpos[i].y/2.0 + 0.5,lightviewpos[i].z/2.0 + 0.5,lightviewpos[i].w);
        lightviewpos[i].z = (2.0 * near) / (far + near - lightviewpos[i].z * (far - near));
    }
    gl_Position = projModelViewMatrix * gl_Position;
    colorout = colorgeo[0];
    normal = normalize(rotMatrix * vec3(-1,0,0));
    pos = gl_Position.xyz;
    EmitVertex();

    gl_Position = (gl_in[0].gl_Position + vec4(rotMatrix * vec3(-0.5,-0.5,-0.5),0));
    for(int i = 0;i < numLights; i++){
        lightviewpos[i] = lightProjModelViewMatrix[i] * gl_Position;
        lightviewpos[i] = lightviewpos[i] / lightviewpos[i].w;
        lightviewpos[i] = vec4(lightviewpos[i].x/2.0 + 0.5,lightviewpos[i].y/2.0 + 0.5,lightviewpos[i].z/2.0 + 0.5,lightviewpos[i].w);
        lightviewpos[i].z = (2.0 * near) / (far + near - lightviewpos[i].z * (far - near));
    }
    gl_Position = projModelViewMatrix * gl_Position;
    colorout = colorgeo[0];
    normal = normalize(rotMatrix * vec3(-1,0,0));
    pos = gl_Position.xyz;
    EmitVertex();

    gl_Position = (gl_in[0].gl_Position + vec4(rotMatrix * vec3(-0.5,0.5,0.5),0));
    for(int i = 0;i < numLights; i++){
        lightviewpos[i] = lightProjModelViewMatrix[i] * gl_Position;
        lightviewpos[i] = lightviewpos[i] / lightviewpos[i].w;
        lightviewpos[i] = vec4(lightviewpos[i].x/2.0 + 0.5,lightviewpos[i].y/2.0 + 0.5,lightviewpos[i].z/2.0 + 0.5,lightviewpos[i].w);
        lightviewpos[i].z = (2.0 * near) / (far + near - lightviewpos[i].z * (far - near));
    }
    gl_Position = projModelViewMatrix * gl_Position;
    colorout = colorgeo[0];
    normal = normalize(rotMatrix * vec3(-1,0,0));
    pos = gl_Position.xyz;
    EmitVertex();

    gl_Position = (gl_in[0].gl_Position + vec4(rotMatrix * vec3(-0.5,-0.5,0.5),0));
    for(int i = 0;i < numLights; i++){
        lightviewpos[i] = lightProjModelViewMatrix[i] * gl_Position;
        lightviewpos[i] = lightviewpos[i] / lightviewpos[i].w;
        lightviewpos[i] = vec4(lightviewpos[i].x/2.0 + 0.5,lightviewpos[i].y/2.0 + 0.5,lightviewpos[i].z/2.0 + 0.5,lightviewpos[i].w);
        lightviewpos[i].z = (2.0 * near) / (far + near - lightviewpos[i].z * (far - near));
    }
    gl_Position = projModelViewMatrix * gl_Position;
    colorout = colorgeo[0];
    normal = normalize(rotMatrix * vec3(-1,0,0));
    pos = gl_Position.xyz;
    EmitVertex();

    EndPrimitive();

    //rechts*
    gl_Position = (gl_in[0].gl_Position + vec4(rotMatrix * vec3(0.5,-0.5,0.5),0));
    for(int i = 0;i < numLights; i++){
        lightviewpos[i] = lightProjModelViewMatrix[i] * gl_Position;
        lightviewpos[i] = lightviewpos[i] / lightviewpos[i].w;
        lightviewpos[i] = vec4(lightviewpos[i].x/2.0 + 0.5,lightviewpos[i].y/2.0 + 0.5,lightviewpos[i].z/2.0 + 0.5,lightviewpos[i].w);
        lightviewpos[i].z = (2.0 * near) / (far + near - lightviewpos[i].z * (far - near));
    }
    gl_Position = projModelViewMatrix * gl_Position;
    colorout = colorgeo[0];
    normal = normalize(rotMatrix * vec3(1,0,0));
    pos = gl_Position.xyz;
    EmitVertex();

    gl_Position = (gl_in[0].gl_Position + vec4(rotMatrix * vec3(0.5,-0.5,-0.5),0));
    for(int i = 0;i < numLights; i++){
        lightviewpos[i] = lightProjModelViewMatrix[i] * gl_Position;
        lightviewpos[i] = lightviewpos[i] / lightviewpos[i].w;
        lightviewpos[i] = vec4(lightviewpos[i].x/2.0 + 0.5,lightviewpos[i].y/2.0 + 0.5,lightviewpos[i].z/2.0 + 0.5,lightviewpos[i].w);
        lightviewpos[i].z = (2.0 * near) / (far + near - lightviewpos[i].z * (far - near));
    }
    gl_Position = projModelViewMatrix * gl_Position;
    colorout = colorgeo[0];
    normal = normalize(rotMatrix * vec3(1,0,0));
    pos = gl_Position.xyz;
    EmitVertex();

    gl_Position = (gl_in[0].gl_Position + vec4(rotMatrix * vec3(0.5,0.5,0.5),0));
    for(int i = 0;i < numLights; i++){
        lightviewpos[i] = lightProjModelViewMatrix[i] * gl_Position;
        lightviewpos[i] = lightviewpos[i] / lightviewpos[i].w;
        lightviewpos[i] = vec4(lightviewpos[i].x/2.0 + 0.5,lightviewpos[i].y/2.0 + 0.5,lightviewpos[i].z/2.0 + 0.5,lightviewpos[i].w);
        lightviewpos[i].z = (2.0 * near) / (far + near - lightviewpos[i].z * (far - near));
    }
    gl_Position = projModelViewMatrix * gl_Position;
    colorout = colorgeo[0];
    normal = normalize(rotMatrix * vec3(1,0,0));
    pos = gl_Position.xyz;
    EmitVertex();

    gl_Position = (gl_in[0].gl_Position + vec4(rotMatrix * vec3(0.5,0.5,-0.5),0));
    for(int i = 0;i < numLights; i++){
        lightviewpos[i] = lightProjModelViewMatrix[i] * gl_Position;
        lightviewpos[i] = lightviewpos[i] / lightviewpos[i].w;
        lightviewpos[i] = vec4(lightviewpos[i].x/2.0 + 0.5,lightviewpos[i].y/2.0 + 0.5,lightviewpos[i].z/2.0 + 0.5,lightviewpos[i].w);
        lightviewpos[i].z = (2.0 * near) / (far + near - lightviewpos[i].z * (far - near));
    }
    gl_Position = projModelViewMatrix * gl_Position;
    colorout = colorgeo[0];
    normal = normalize(rotMatrix * vec3(1,0,0));
    pos = gl_Position.xyz;
    EmitVertex();

    EndPrimitive();

}