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Fixed rain occlusion issues

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This commit is contained in:
Joshua Barretto 2022-07-10 16:40:49 +01:00
parent fc21b54f02
commit d4906f55bc
3 changed files with 10 additions and 7 deletions
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13
assets/voxygen/shaders/clouds-frag.glsl
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@ -93,11 +93,14 @@ void main() {
vec3 rpos = vec3(0.0);
float t = 0.0;
const float PLANCK = 0.01;
while (t < 64.0) {
while (true) {
float scale = min(pow(2, ceil(t / 2.0)), 32);
vec2 deltas = (step(vec2(0), dir2d) - fract(rpos.xy / scale + 100.0)) / dir2d;
float jump = max(min(deltas.x, deltas.y) * scale, PLANCK);
t += jump;
if (t >= 64.0) { break; }
rpos = rorigin + adjusted_dir * t;
vec2 diff = abs(round(rpos.xy) - rpos.xy);
@ -105,18 +108,18 @@ void main() {
wall_pos.xz *= vec2(4, 0.3);
wall_pos.z += hash_two(uvec2(wall_pos.xy + vec2(0, 0.5)));
float depth_adjust = fract(hash_two(uvec2(wall_pos.xz)));
float depth_adjust = fract(hash_two(uvec2(wall_pos.xz) + 500u));
float wpos_dist = t - jump * depth_adjust;
vec3 wpos = cam_pos.xyz + dir * wpos_dist;
if (wpos_dist > dist) { break; }
if (length((fract(wall_pos.xz) - 0.5)) < 0.1 + pow(max(0.0, wpos_dist - (dist - 0.25)) / 0.25, 4.0) * 0.2) {
float density = rain_density * rain_occlusion_at(wpos);
if (fract(hash_two(uvec2(wall_pos.xz))) >= density) { continue; }
if (fract(hash_two(uvec2(wall_pos.xz) + 1000u)) >= density) { continue; }
float alpha = 0.5 * clamp((wpos_dist - 1.0) * 0.5, 0.0, 1.0);
float light = dot(color.rgb, vec3(1)) + 0.1 + (get_sun_brightness() + get_moon_brightness()) * 0.3;
color.rgb = mix(color.rgb, vec3(0.1, 0.2, 0.5) * light, alpha);
float light = dot(color.rgb, vec3(1)) + 0.05 + (get_sun_brightness() + get_moon_brightness()) * 0.2;
color.rgb = mix(color.rgb, vec3(0.3, 0.35, 0.5) * light, alpha);
}
}
}

2
voxygen/src/render/pipelines/rain_occlusion.rs
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@ -195,7 +195,7 @@ impl RainOcclusionPipeline {
topology: wgpu::PrimitiveTopology::TriangleList,
strip_index_format: None,
front_face: wgpu::FrontFace::Ccw,
cull_mode: Some(wgpu::Face::Front),
cull_mode: Some(wgpu::Face::Back),
clamp_depth: true,
polygon_mode: wgpu::PolygonMode::Fill,
conservative: false,

2
voxygen/src/scene/terrain.rs
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@ -48,7 +48,7 @@ const SPRITE_LOD_LEVELS: usize = 5;
// For rain occlusion we only need to render the closest chunks.
/// How many chunks are maximally rendered for rain occlusion.
pub const RAIN_OCCLUSION_CHUNKS: usize = 9;
pub const RAIN_OCCLUSION_CHUNKS: usize = 25;
#[derive(Clone, Copy, Debug)]
struct Visibility {