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Shader fixes

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This commit is contained in:
luboslenco
2025-09-20 23:20:39 +02:00
parent 7e9a4ee9f9
commit edb5c86eee
1 changed files with 25 additions and 30 deletions
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paint/shaders/ssao_pass.kong
+25 -30
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@@ -1,4 +1,3 @@
#[set(everything)]
const constants: {
invP: float4x4;
@@ -16,8 +15,8 @@ const gbufferD: tex2d;
#[set(everything)]
const gbuffer0: tex2d;
const max_steps: float = 24;
const ray_step: float = 0.0005;
const max_steps: float = 30.0;
const ray_step: float = 0.005;
struct vert_in {
pos: float2;
@@ -57,39 +56,36 @@ fun get_pos_view(view_ray: float3, depth: float): float3 {
return view_ray * linear_depth;
}
fun get_delta_depth(view_ray: float3, hit_coord: float3): float {
fun get_delta_depth(hit_coord: float3): float {
var coord: float2 = get_projected_coord(hit_coord);
if (coord.x < 0.0 || coord.x > 1.0 || coord.y < 0.0 || coord.y > 1.0) {
return 1000.0;
}
var depth: float = sample_lod(gbufferD, sampler_linear, coord, 0.0).r;
var p: float3 = get_pos_view(view_ray, depth);
return p.z - hit_coord.z;
var linear_depth: float = constants.camera_proj.y / (constants.camera_proj.x - depth);
return linear_depth - hit_coord.z;
}
fun ray_cast(view_ray: float3, dir: float3, vpos: float3): float {
dir = dir * ray_step;
fun ray_cast(dir: float3, vpos: float3): float {
var n_dir: float3 = normalize(dir);
var step_vec: float3 = n_dir * ray_step;
var hit_coord: float3 = vpos;
var dist: float = 0.15;
var t: float = 0.0;
// for (var i: int = 0; i < max_steps; i = i + 1) {
var i: int = 0;
while (i < int(max_steps)) {
hit_coord += dir;
var delta: float = get_delta_depth(view_ray, hit_coord);
hit_coord += step_vec;
t += ray_step;
var delta: float = get_delta_depth(hit_coord);
if (delta > 0.0 && delta < 0.2) {
dist = distance(vpos, hit_coord);
return dist;
return t;
}
if (distance(vpos, hit_coord) > 2.0) {
return dist;
if (t > 2.0) {
return 0.15; // max_radius;
}
//
i += 1;
//
}
return dist;
return 0.15; // max_radius;
}
fun tangent(n: float3): float3 {
@@ -123,8 +119,6 @@ fun octahedron_wrap(v: float2): float2 {
r.x = 1.0 - r.x;
r.y = 1.0 - r.y;
return r * a;
// return (1.0 - abs(v.yx)) * (float2(v.x >= 0.0 ? 1.0 : -1.0, v.y >= 0.0 ? 1.0 : -1.0));
}
fun ssao_pass_frag(input: vert_out): float {
@@ -135,12 +129,10 @@ fun ssao_pass_frag(input: vert_out): float {
var n: float3;
n.z = 1.0 - abs(enc.x) - abs(enc.y);
if (n.z >= 0.0) {
//n.xy = enc.xy;
n.x = enc.x;
n.y = enc.y;
}
else {
//n.xy = octahedron_wrap(enc.xy);
var f2: float2 = octahedron_wrap(enc.xy);
n.x = f2.x;
n.y = f2.y;
@@ -153,12 +145,15 @@ fun ssao_pass_frag(input: vert_out): float {
var c1: float3 = 0.5 * (o1 + o2);
var c2: float3 = 0.5 * (o1 - o2);
var col: float = ray_cast(input.view_ray, n, vpos);
col += ray_cast(input.view_ray, lerp3(n, o1, 0.5), vpos);
col += ray_cast(input.view_ray, lerp3(n, o2, 0.5), vpos);
col += ray_cast(input.view_ray, lerp3(n, -c1, 0.5), vpos);
col += ray_cast(input.view_ray, lerp3(n, -c2, 0.5), vpos);
return col;
var col: float = ray_cast(lerp3(n, o1, 0.5), vpos);
col += ray_cast(lerp3(n, -o1, 0.5), vpos);
col += ray_cast(lerp3(n, o2, 0.5), vpos);
col += ray_cast(lerp3(n, -o2, 0.5), vpos);
col += ray_cast(lerp3(n, c1, 0.5), vpos);
col += ray_cast(lerp3(n, -c1, 0.5), vpos);
col += ray_cast(lerp3(n, c2, 0.5), vpos);
col += ray_cast(lerp3(n, -c2, 0.5), vpos);
return col * 0.5;
}
#[pipe]