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BltShader: More hacks! Yay! 

Seriously, I'm about to kill myself over this..
Not even gonna bother with math-if optimization.
This commit is contained in:
Jonas Kulla 2013-12-20 07:39:11 +01:00
parent 99cbb4d594
commit 3a5c4eba52
1 changed files with 5 additions and 1 deletions
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4
shader/bitmapBlit.frag
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@ -27,6 +27,10 @@ void main()
float at = ab*as;
resFrag.a = at + ad - ad*at;
// Sigh...
if (ad == 0.0)
resFrag.rgb = srcFrag.rgb;
else
resFrag.rgb = as*srcFrag.rgb + (1.0-at) * ad * dstFrag.rgb;
gl_FragColor = resFrag;