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Fix line width calculation

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It was only correct at the screen center
This commit is contained in:
numzero 2024-09-28 12:19:27 +03:00
parent f162a18107
commit 32a2995e7b
1 changed files with 2 additions and 1 deletions
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src/bin/wireframe/ray.wgsl
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@ -48,7 +48,8 @@ fn vs_main(seg: SegmentInput, off: OffsetInput) -> VertexOutput {
default: {}
}
let pt_cs = camera.mvp * vec4(pt, 1.);
let dir_cs = camera.mvp * vec4(dir, 0.);
let dir_cs0 = camera.mvp * vec4(dir, 0.);
let dir_cs = dir_cs0.xyz * pt_cs.w - pt_cs.xyz * dir_cs0.w;
let normal_cs = camera.scale * normalize(vec2(-dir_cs.y, dir_cs.x));
out.clip_position = pt_cs + vec4(sgn * width * normal_cs, 0., 0.);
return out;