Make background transparent

nicoburns · nicoburns · commit 10a1c369b5ff · 2025-06-02T02:20:26.000+02:00
diff --git a/examples/with_winit/src/shader.wgsl b/examples/with_winit/src/shader.wgsl
@@ -99,7 +99,8 @@ fn render(fragCoord: vec2<f32>, light_color: vec3<f32>) -> vec4<f32> {
     var light = 7.0 + 2.0 * dot(surf_normal, light_position);
     light = light / (0.2 * pow(length(light_position - p), 3.5));
 
-    return vec4<f32>(light * light_color, 1.0) * 2.0;
+    let alpha = select(0.0, 1.0, i < 90);
+    return vec4<f32>(light * light_color, alpha) * 2.0;
 }
 
 @fragment

Original file line number	Diff line number	Diff line change
`@@ -99,7 +99,8 @@ fn render(fragCoord: vec2<f32>, light_color: vec3<f32>) -> vec4<f32> {`
`99`	`99`	`var light = 7.0 + 2.0 * dot(surf_normal, light_position);`
`100`	`100`	`light = light / (0.2 * pow(length(light_position - p), 3.5));`
`101`	`101`
`102`		`- return vec4<f32>(light * light_color, 1.0) * 2.0;`
	`102`	`+ let alpha = select(0.0, 1.0, i < 90);`
	`103`	`+ return vec4<f32>(light * light_color, alpha) * 2.0;`
`103`	`104`	`}`
`104`	`105`
`105`	`106`	`@fragment`