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Improve comment about switch statement

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This commit is contained in:
Marco Buono 2023-10-08 19:31:48 -03:00
parent 02960236b5
commit 402518fd57
1 changed files with 3 additions and 1 deletions
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crates/bevy_pbr/src/render/pbr_lighting.wgsl
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@ -390,7 +390,9 @@ fn fetch_transmissive_background(offset_position: vec2<f32>, frag_coord: vec3<f3
switch i & 7 {
// https://www.iryoku.com/next-generation-post-processing-in-call-of-duty-advanced-warfare (slides 120-135)
// TODO: Figure out a more reasonable way of doing this, as WGSL
// seems to only allow constant indexes into constant arrays
// seems to only allow constant indexes into constant arrays at the moment.
// The downstream shader compiler should be able to optimize this into a single
// constant when unrolling the for loop, but it's still not ideal.
case 0: { spiral_offset = vec2<f32>(-0.7071, 0.7071); }
case 1: { spiral_offset = vec2<f32>(-0.0000, -0.8750); }
case 2: { spiral_offset = vec2<f32>( 0.5303, 0.5303); }