tree 50e5224fbcbf19d12c1232190b5a231da6bf2751
parent 872147cc6b15ec033c54265a454ef1ebcebd6d7c
author csmartdalton <hello@rive.app> 1770922691 +0000
committer csmartdalton <hello@rive.app> 1770922691 +0000

fix(renderer): Interleave positive and negative feather atlas triangles (#11654) 37764336db
We were rendering the atlas with all negative triangles first, followed
by all positive triangles. This is the worst possible ordering for
maintaining high precision in a 16-bit coverage buffer, since as the
magnitude accumulates, we lose the lower bits. Instead, render the
positive/negative triangles interleaved, in the same order naturally
come in. This requires an extra check in the fragment shader for whether
the triangle is clockwise.

Co-authored-by: Chris Dalton <99840794+csmartdalton@users.noreply.github.com>