VoxelEngine2/shaders/shader.geom

#version 450

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

layout(binding = 0) uniform UniformBufferObject {
    mat4 model;
    mat4 geom_rot;
    mat4 view;
    mat4 proj;
} ubo;

layout(location = 0) in vec3 geoColor[];
layout(location = 1) in vec2 geoTexCoord[];

layout(location = 0) out vec3 fragColor;
layout(location = 1) out vec2 fragTexCoord;

void main () {
    mat4 geom_rotation = ubo.geom_rot;
    //back
    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(0.5, -0.5, -0.5, 0));
    fragColor = geoColor[0];
    fragTexCoord = geoTexCoord[0];
    EmitVertex();

    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(-0.5, -0.5, -0.5, 0));
    fragColor = geoColor[0];
    fragTexCoord = geoTexCoord[0];
    EmitVertex();

    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(0.5, 0.5, -0.5, 0));
    fragColor = geoColor[0];
    fragTexCoord = geoTexCoord[0];
    EmitVertex();

    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(-0.5, 0.5, -0.5, 0));
    fragColor = geoColor[0];
    fragTexCoord = geoTexCoord[0];
    EmitVertex();
    EndPrimitive();

    //front
    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(-0.5, 0.5, 0.5, 0));
    fragColor = geoColor[0];
    fragTexCoord = geoTexCoord[0];
    EmitVertex();

    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(-0.5, -0.5, 0.5, 0));
    fragColor = geoColor[0];
    fragTexCoord = geoTexCoord[0];
    EmitVertex();

    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(0.5, 0.5, 0.5, 0));
    fragColor = geoColor[0];
    fragTexCoord = geoTexCoord[0];
    EmitVertex();

    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(0.5, -0.5, 0.5, 0));
    fragColor = geoColor[0];
    fragTexCoord = geoTexCoord[0];
    EmitVertex();
    EndPrimitive();

    //up
    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(0.5, 0.5, -0.5, 0));
    fragColor = geoColor[0];
    fragTexCoord = geoTexCoord[0];
    EmitVertex();

    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(-0.5, 0.5, -0.5, 0));
    fragColor = geoColor[0];
    fragTexCoord = geoTexCoord[0];
    EmitVertex();

    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(0.5, 0.5, 0.5, 0));
    fragColor = geoColor[0];
    fragTexCoord = geoTexCoord[0];
    EmitVertex();

    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(-0.5, 0.5, 0.5, 0));
    fragColor = geoColor[0];
    fragTexCoord = geoTexCoord[0];
    EmitVertex();
    EndPrimitive();

    //down
    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(-0.5, -0.5, 0.5, 0));
    fragColor = geoColor[0];
    fragTexCoord = geoTexCoord[0];
    EmitVertex();

    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(-0.5, -0.5, -0.5, 0));
    fragColor = geoColor[0];
    fragTexCoord = geoTexCoord[0];
    EmitVertex();

    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(0.5, -0.5, 0.5, 0));
    fragColor = geoColor[0];
    fragTexCoord = geoTexCoord[0];
    EmitVertex();

    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(0.5, -0.5, -0.5, 0));
    fragColor = geoColor[0];
    fragTexCoord = geoTexCoord[0];
    EmitVertex();
    EndPrimitive();

    //left
    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(-0.5, 0.5, -0.5, 0));
    fragColor = geoColor[0];
    fragTexCoord = geoTexCoord[0];
    EmitVertex();

    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(-0.5, -0.5, -0.5, 0));
    fragColor = geoColor[0];
    fragTexCoord = geoTexCoord[0];
    EmitVertex();

    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(-0.5, 0.5, 0.5, 0));
    fragColor = geoColor[0];
    fragTexCoord = geoTexCoord[0];
    EmitVertex();

    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(-0.5, -0.5, 0.5, 0));
    fragColor = geoColor[0];
    fragTexCoord = geoTexCoord[0];
    EmitVertex();
    EndPrimitive();

    //right
    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(0.5, -0.5, 0.5, 0));
    fragColor = geoColor[0];
    fragTexCoord = geoTexCoord[0];
    EmitVertex();

    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(0.5, -0.5, -0.5, 0));
    fragColor = geoColor[0];
    fragTexCoord = geoTexCoord[0];
    EmitVertex();

    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(0.5, 0.5, 0.5, 0));
    fragColor = geoColor[0];
    fragTexCoord = geoTexCoord[0];
    EmitVertex();

    gl_Position = ubo.proj * ubo.view * (gl_in[0].gl_Position + geom_rotation * vec4(0.5, 0.5, -0.5, 0));
    fragColor = geoColor[0];
    fragTexCoord = geoTexCoord[0];
    EmitVertex();
    EndPrimitive();
}