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Proper inverse of translation components

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This commit is contained in:
Chad Brokaw 2023-02-22 23:08:38 -05:00
parent c65c19dc4f
commit 3c15bff867
1 changed files with 4 additions and 1 deletions
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5
shader/draw_leaf.wgsl
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@ -151,7 +151,10 @@ fn main(
let r1 = bitcast<f32>(scene[dd + 6u]); let r1 = bitcast<f32>(scene[dd + 6u]);
let inv_det = 1.0 / (matrx.x * matrx.w - matrx.y * matrx.z); let inv_det = 1.0 / (matrx.x * matrx.w - matrx.y * matrx.z);
let inv_mat = inv_det * vec4(matrx.w, -matrx.y, -matrx.z, matrx.x); let inv_mat = inv_det * vec4(matrx.w, -matrx.y, -matrx.z, matrx.x);
var inv_tr = inv_mat.xz * translate.x + inv_mat.yw * translate.y; var inv_tr = vec2(
inv_det * (matrx.z * translate.y - matrx.w * translate.x),
inv_det * (matrx.y * translate.x - matrx.x * translate.y),
);
inv_tr += p0; inv_tr += p0;
let center1 = p1 - p0; let center1 = p1 - p0;
let rr = r1 / (r1 - r0); let rr = r1 / (r1 - r0);