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Fix head rotation for clip-space billboard offset

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giagitom
2026-02-15 01:09:42 +01:00
parent 8c6969206d
commit 1cc367c8d8
1 changed files with 5 additions and 4 deletions
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9
src/mol-gl/shader/text.vert.ts
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@@ -103,12 +103,13 @@ void main(void){
cornerOffset.y += offsetY;
if (uHasHeadRotation) {
cornerOffset = (uInvHeadRotation * vec4(cornerOffset, 0.0, 0.0)).xy;
vec3 rotatedOffset = (uInvHeadRotation * vec4(cornerOffset, 0.0, 0.0)).xyz;
clip += uProjection * vec4(rotatedOffset, 0.0);
} else {
// apply offset in clip space to avoid perspective distortion on the quad
clip.xy += vec2(uProjection[0][0], uProjection[1][1]) * cornerOffset;
}
// apply offset in clip space to avoid perspective distortion on the quad
clip.xy += vec2(uProjection[0][0], uProjection[1][1]) * cornerOffset;
gl_Position = clip;
vViewPosition = -mvCenter.xyz;