From 53b44f27edcf40e92818954660d0782613c84ec7 Mon Sep 17 00:00:00 2001
From: numzero <numzer0@yandex.ru>
Date: Sat, 29 Mar 2025 11:31:59 +0300
Subject: [PATCH] Different sort of glare?

---
 src/glare.wgsl | 49 ++++++++++++-------------------------------------
 1 file changed, 12 insertions(+), 37 deletions(-)

diff --git a/src/glare.wgsl b/src/glare.wgsl
index 066db36..e9b2d29 100644
--- a/src/glare.wgsl
+++ b/src/glare.wgsl
@@ -21,7 +21,7 @@ fn on_vertex(in: Vertex) -> Varying {
 	return Varying(uv, vec4(xy, 0., 1.));
 }
 
-const CUTOFF: i32 = 200;
+const CUTOFF: i32 = 50;
 
 @fragment
 fn pass_h(in: Varying) -> @location(0) vec4f {
@@ -33,8 +33,12 @@ fn pass_h(in: Varying) -> @location(0) vec4f {
 	for (var x = a; x < b; x++) {
 		let w = weight(x - pix.x);
 		let pixel = textureLoad(tex, vec2i(x, pix.y), 0);
-		accum += w * pixel;
+		if (all(pixel >= vec4(0.))) { // excludes NaNs
+			accum += w * pixel;
+		}
 	}
+// 	accum.x = textureLoad(tex, pix, 0).x;
+// 	accum.y = textureLoad(tex, pix, 0).y;
 	return vec4(accum.xyz, params.sigma);
 }
 
@@ -48,45 +52,16 @@ fn pass_v(in: Varying) -> @location(0) vec4f {
 	for (var y = a; y < b; y++) {
 		let w = weight(y - pix.y);
 		let pixel = textureLoad(tex, vec2i(pix.x, y), 0);
-		accum += w * pixel;
+		if (all(pixel >= vec4(0.))) { // excludes NaNs
+			accum += w * pixel;
+		}
 	}
+// 	accum.x = textureLoad(tex, pix, 0).x;
 	return vec4(accum.xyz, params.sigma);
 }
 
-// fn weight(dist: i32) -> f32 {
-// 	let σ = 50.;
-// 	let d = f32(dist);
-// 	let w = max(0., 1. - abs(d) / σ) / σ;
-// 	return .1 * w;
-// }
-
 fn weight(dist: i32) -> f32 {
-	let σ = params.sigma / 1e5;
+	let σ = params.sigma / 1e4;
 	let d = f32(dist) / σ;
-	return 3. / (1. + d*d);
+	return 1. / (1. + d*d);
 }
-
-// fn weight(dist: i32) -> f32 {
-// 	let σ = params.sigma / 1e8;
-// 	let d = f32(dist) / σ;
-// 	return 3. / (1. + abs(d));
-// }
-
-// fn weight(dist: i32) -> f32 {
-// 	let σ = params.sigma / 300.;
-// 	let d = abs(f32(dist) / σ);
-// 	return 1. / (1. + d*d*d) / σ;
-// }
-
-// fn weight(dist: i32) -> f32 {
-// 	let d = f32(abs(dist));
-// 	let c = mix(.01, 1., exp(-d*d));
-// // 	return c * pow(1.2, -d);
-// 	return c / (1. + pow(d, 2.0));
-// // 	return .25 * c / (1. + pow(.1 * d, 4.0));
-// }
-
-// fn weight(dist: i32) -> f32 {
-// 	let d = 2. * f32(dist);
-// 	return exp(-d*d);
-// }