veloren/assets/voxygen/shaders/lod-terrain-vert.glsl

#version 330 core

#include <globals.glsl>
#include <srgb.glsl>
#include <lod.glsl>

in vec2 v_pos;

layout (std140)
uniform u_locals {
	vec4 nul;
};

out vec3 f_pos;
out vec3 f_norm;
out vec2 v_pos_orig;
// out vec4 f_square;
// out vec4 f_shadow;
// out float f_light;

void main() {
    // Find distances between vertices.
    f_pos = lod_pos(v_pos, focus_pos.xy);
    vec2 dims = vec2(1.0 / view_distance.y);
    vec4 f_square = focus_pos.xyxy + vec4(splay(v_pos - dims), splay(v_pos + dims));
    f_norm = lod_norm(f_pos.xy, f_square);
    v_pos_orig = v_pos;

	// f_pos = lod_pos(focus_pos.xy + splay(v_pos) * /*1000000.0*/(1 << 20), square);

	// f_norm = lod_norm(f_pos.xy);

    // f_shadow = textureBicubic(t_horizon, pos_to_tex(f_pos.xy));

	//f_pos.z -= 1.0 / pow(distance(focus_pos.xy, f_pos.xy) / (view_distance.x * 0.95), 20.0);

	// f_pos.z -= 100.0 * pow(1.0 + 0.01 / view_distance.x, -pow(distance(focus_pos.xy, f_pos.xy), 2.0));
    // f_pos.z = mix(-f_pos.z, f_pos.z, view_distance.x <= distance(focus_pos.xy, f_pos.xy) + 32.0);
	f_pos.z -= max(view_distance.x - distance(focus_pos.xy, f_pos.xy), 0.0) * (1.0 + max(0.0, f_pos.z - focus_pos.z));

	// f_light = 1.0;

	gl_Position =
		proj_mat *
		view_mat *
		vec4(f_pos, 1);
	gl_Position.z = -1000.0 / (gl_Position.z + 10000.0);
}