バージョン
3.5-1056
ブランチ
master
投稿日時
11 年前
Windows x64 Windows x86 Mac OS X
コミット
7514b41966145af3c628af3d6b6d40fc9a57fefc
投稿者
degasus
変更点
GLSL: fix msaa egdes

MSAA is a optimiztion to execute the fragment shader just once per pixel instead per sample.
It sounds great, but has a big issue: At edges where the center isn't in the polygon, the
fragment would still be executed, but still with the center of the pixel as position.
So if some calculations aren't allowed outside the polygon, the result would be invalid.

But the nice one: we can give a hint to each input to be choosen from a valid pixel,
so now every pixel will be calculated with valid source.