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Better LoD detail

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This commit is contained in:
Joshua Barretto 2024-01-28 18:48:22 +00:00
parent 47d502fa56
commit f1ee52b2cc
2 changed files with 19 additions and 9 deletions
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20
assets/voxygen/shaders/lod-object-frag.glsl
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@ -35,7 +35,15 @@ layout(location = 1) out uvec4 tgt_mat;
#include <light.glsl>
#include <lod.glsl>
const float FADE_DIST = 32.0;
float lod_voxel_noise(vec3 f_pos) {
#ifdef EXPERIMENTAL_PROCEDURALLODDETAIL
vec3 block_pos = floor(f_pos) + 0.5;
//return (hash_three(uvec3((block_pos + focus_off.xyz) * 0.35)) - 0.5) * 5.0;
return floor((noise_3d((block_pos + focus_off.xyz) * 0.015) - 0.5) * 5.0);
#else
return 0.0;
#endif
}
void main() {
#ifdef EXPERIMENTAL_BAREMINIMUM
@ -94,20 +102,22 @@ void main() {
vec3 top_norm = vec3(0, 0, 1);
voxel_norm = normalize(mix(side_norm, top_norm, cam_dir.z));
#else
float t = -1.5;
while (t < 1.5) {
float base_surf_depth = lod_voxel_noise(f_pos);
float t = -1.5 + base_surf_depth;
while (t < 1.5 + base_surf_depth) {
vec3 deltas = (step(vec3(0), -cam_dir) - fract(f_pos - cam_dir * t)) / -cam_dir;
float m = min(min(deltas.x, deltas.y), deltas.z);
t += max(m, 0.01);
vec3 block_pos = floor(f_pos - cam_dir * t) + 0.5;
if (dot(block_pos - f_pos, -f_norm) < 0.0) {
float surf_depth = lod_voxel_noise(f_pos);
if (dot(block_pos - f_pos - f_norm * surf_depth, -f_norm) < 0.0) {
vec3 to_center = abs(block_pos - (f_pos - cam_dir * t));
voxel_norm = step(max(max(to_center.x, to_center.y), to_center.z), to_center) * sign(-cam_dir);
voxel_norm = mix(f_norm, voxel_norm, voxelize_factor);
surf_color *= mix(0.65, 1.0, hash_three(uvec3(block_pos + focus_off.xyz)));
f_ao = mix(1.0, clamp(1.0 + t, 0.2, 1.0), voxelize_factor);
f_ao = mix(1.0, clamp(1.0 + t - surf_depth, 0.1, 1.0), voxelize_factor * max(0.0, -dot(cam_dir, f_norm)));
break;
}
}

8
assets/voxygen/shaders/lod-terrain-frag.glsl
View File

@ -130,13 +130,13 @@ void main() {
voxel_norm = normalize(mix(side_norm, top_norm, max(cam_dir.z, 0.0)));
#else
#ifdef EXPERIMENTAL_PROCEDURALLODDETAIL
float nz_offset = (noise_2d((f_pos.xy + focus_off.xy) * 0.01) - 0.5) * 3.0 / f_norm.z;
float nz_offset = floor((noise_2d(round(f_pos.xy + focus_off.xy) * 0.01) - 0.5) * 3.0 / max(f_norm.z, 0.01));
#else
const float nz_offset = 0.0;
#endif
float t = -2.0;
while (t < 2.0) {
float t = -2.0 + nz_offset;
while (t < 2.0 + nz_offset) {
vec3 deltas = (step(vec3(0), -cam_dir) - fract(f_pos - cam_dir * t)) / -cam_dir;
float m = min(min(deltas.x, deltas.y), deltas.z);
@ -147,7 +147,7 @@ void main() {
vec3 to_center = abs(block_pos - (f_pos - cam_dir * t));
voxel_norm = step(max(max(to_center.x, to_center.y), to_center.z), to_center) * sign(-cam_dir);
voxel_norm = mix(f_norm, voxel_norm, voxelize_factor);
f_ao = mix(1.0, clamp(1.0 + (t - nz_offset) * 0.5, 0.1, 1.0), voxelize_factor);
f_ao = mix(1.0, clamp(1.0 + (t - nz_offset) * 0.5, 0.1, 1.0), voxelize_factor * max(0.0, -dot(cam_dir, f_norm)));
break;
}
}