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- Reduced potential for overflow in R_ProjectSprite().

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SVN r1725 (trunk)
This commit is contained in:
Randy Heit 2009-07-17 01:49:28 +00:00
parent 198ffea7ee
commit f39cde0486
2 changed files with 2 additions and 1 deletions
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1
docs/rh-log.txt
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@ -1,4 +1,5 @@
July 16, 2009 July 16, 2009
- Reduced potential for overflow in R_ProjectSprite().
- Moved the IF_ADDITIVETIME check earlier in APowerup::HandlePickup so - Moved the IF_ADDITIVETIME check earlier in APowerup::HandlePickup so
that additive time powerups can be activated before the existing that additive time powerups can be activated before the existing
power has entered its blink threshold. power has entered its blink threshold.

2
src/r_things.cpp
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@ -1381,7 +1381,7 @@ void R_ProjectSprite (AActor *thing, int fakeside)
vis->RenderStyle = thing->RenderStyle; vis->RenderStyle = thing->RenderStyle;
vis->FillColor = thing->fillcolor; vis->FillColor = thing->fillcolor;
vis->xscale = xscale; vis->xscale = xscale;
vis->yscale = Scale (InvZtoScale, yscale, tz)>>4; vis->yscale = Scale (InvZtoScale, yscale, tz << 4);
vis->depth = tz; vis->depth = tz;
vis->idepth = (DWORD)DivScale32 (1, tz) >> 1; // tz is 20.12, so idepth ought to be 12.20, but vis->idepth = (DWORD)DivScale32 (1, tz) >> 1; // tz is 20.12, so idepth ought to be 12.20, but
vis->cx = tx2; // signed math makes it 13.19 vis->cx = tx2; // signed math makes it 13.19