From 750dc8d744bb56b845f7448629fd176b69a896a0 Mon Sep 17 00:00:00 2001
From: numzero <numzer0@yandex.ru>
Date: Mon, 30 Dec 2024 16:24:25 +0300
Subject: [PATCH] Remove useless alpha channel

---
 src/bin/minitracer/trace.wgsl | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/bin/minitracer/trace.wgsl b/src/bin/minitracer/trace.wgsl
index 5b24b85..9bc320f 100644
--- a/src/bin/minitracer/trace.wgsl
+++ b/src/bin/minitracer/trace.wgsl
@@ -36,7 +36,7 @@ fn on_vertex(in: Vertex) -> Varying {
 
 @fragment
 fn on_fragment(in: Varying) -> @location(0) vec4f {
-	return trace_fragment(in);
+	return vec4(trace_fragment(in), 1.);
 }
 
 fn sqr(v: vec3f) -> f32 {
@@ -62,10 +62,10 @@ fn to_sphere(center: vec3f, radius: f32, t: ptr<function, f32>) -> bool {
 	return true;
 }
 
-fn trace_fragment(in: Varying) -> vec4f {
+fn trace_fragment(in: Varying) -> vec3f {
 	seed(in.screen);
 
-	var result = vec4(0.0, 0.0, 0.0, 0.0);
+	var result = vec3(0.0);
 	var color = vec3(1.0, 1.0, 1.0);
 	pos = params.eye;
 	let off_px = vec2(rand_float(), rand_float()) - .5;
@@ -84,13 +84,13 @@ fn trace_fragment(in: Varying) -> vec4f {
 		}
 		if (sphere == -1) {
 			let env = textureSampleLevel(env_texture, env_sampler, ray, 0.0);
-			result += vec4(3.0 * color * env.xyz, 0.0);
+			result += 3.0 * color * env.xyz;
 			break;
 		}
 		let s = spheres[sphere];
 		pos += t * ray;
 		let normal = (pos - s.center) / s.radius;
-		result += vec4(color * s.emit_color, 0.0);
+		result += color * s.emit_color;
 		color *= s.reflect_color;
 		let diffuse = normal + rand_sphere();
 		let specular = reflect(ray, normal);