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// SPDX-License-Identifier: CC-BY-SA-4.0
#version 330 core
#pragma variant[0] WORLD_CURVATURE
layout(location = 0) in vec3 vert_Position;
uniform mat4x4 u_ViewProjMatrix;
uniform vec3 u_WorldPosition;
uniform float u_ViewDistance;
uniform vec3 u_Scale;
void main(void)
{
gl_Position = u_ViewProjMatrix * vec4((u_WorldPosition + u_Scale * vert_Position), 1.0);
gl_Position.z -= 0.00025;
#if WORLD_CURVATURE
gl_Position.y -= gl_Position.z * gl_Position.z / u_ViewDistance / 32.0;
gl_Position.y -= gl_Position.x * gl_Position.x / u_ViewDistance / 32.0;
#endif
}
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