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Fix geometry depth binding not updating after resize, refactoring

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This commit is contained in:
Lauri Räsänen 2023-11-10 19:38:12 +02:00
parent 7b752703ea
commit 3676f8fef5
6 changed files with 210 additions and 219 deletions
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48
res/shaders/fog.wgsl
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@ -35,31 +35,16 @@ fn vs_main(
// Fragment shader
@group(2)@binding(0)
@group(1) @binding(0)
var t_light_depth: texture_depth_2d_array;
@group(2) @binding(1)
@group(1) @binding(1)
var s_light_depth: sampler_comparison;
@group(2)@binding(2)
@group(2) @binding(0)
var t_geometry_depth: texture_depth_2d;
@group(2) @binding(3)
@group(2) @binding(1)
var s_geometry_depth: sampler;
@group(3) @binding(0)
var t_diffuse: texture_2d<f32>;
@group(3)@binding(1)
var s_diffuse: sampler;
@group(3)@binding(2)
var t_normal: texture_2d<f32>;
@group(3) @binding(3)
var s_normal: sampler;
@group(3)@binding(4)
var t_roughness_metalness: texture_2d<f32>;
@group(3) @binding(5)
var s_roughness_metalness: sampler;
fn fog_noise(pos: vec3<f32>) -> f32 {
var p = pos * FOG_SCALE;
p.x += global_uniforms.time * 0.01;
@ -91,15 +76,7 @@ fn ray_march(origin: vec3<f32>, direction: vec3<f32>, scene_depth: f32) -> f32 {
return density;
}
fn scene_depth(clip_position: vec4<f32>) -> f32 {
if (clip_position.w <= 0.0) {
return 0.0;
}
let ndc = clip_position.xy / clip_position.w;
let uv = ndc * vec2<f32>(0.5, -0.5) + vec2<f32>(0.5, 0.5);
let depth = textureSample(t_geometry_depth, s_geometry_depth, uv);
fn depth_to_linear(depth: f32) -> f32 {
// convert to linear [near, far] range
let z_near = camera.planes.x;
let z_far = camera.planes.y;
@ -109,15 +86,21 @@ fn scene_depth(clip_position: vec4<f32>) -> f32 {
@fragment
fn fs_main(vert: FogVertexOutput) -> @location(0) vec4<f32> {
let cam_to_volume = vert.world_position.xyz - camera.position.xyz;
let distance_to_volume = length(cam_to_volume);
var distance_to_volume = length(cam_to_volume);
let direction = cam_to_volume / distance_to_volume;
// FIXME: t_geometry_depth is 0
var geometry_depth = scene_depth(vert.clip_position) - distance_to_volume;
geometry_depth = 3000.0;
// FIXME: geom depth should always be greater than the volume surface depth...
// why is this broken?
distance_to_volume = depth_to_linear(vert.clip_position.z);
let uv = vert.clip_position.xy / camera.planes.xy;
let depth = textureSample(t_geometry_depth, s_geometry_depth, uv);
let geometry_depth = depth_to_linear(depth) - distance_to_volume;
if (geometry_depth <= 0.0)
{
return vec4<f32>(0.0);
}
return vec4<f32>(1.0);
/*
let density = ray_march(vert.world_position.xyz, direction, geometry_depth);
var in_light = 0.0;
@ -170,4 +153,5 @@ fn fs_main(vert: FogVertexOutput) -> @location(0) vec4<f32> {
result = result / (result + vec3(1.0));
return vec4(result, density * FOG_ALPHA);
*/
}