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Bug 108005 - need to clear bits in alpha mirror for interlaced PNGs

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and MNG.  r=rjesup, sr=blizzard
This commit is contained in:
tor%cs.brown.edu 2001-11-03 02:03:51 +00:00
parent 27ee301ca7
commit c6a6069882
1 changed files with 2 additions and 0 deletions
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2
gfx/src/gtk/nsImageGTK.cpp
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@ -35,6 +35,7 @@
#define NS_GET_BIT(rowptr, x) (rowptr[(x)>>3] & (1<<(7-(x)&0x7)))
#define NS_SET_BIT(rowptr, x) (rowptr[(x)>>3] |= (1<<(7-(x)&0x7)))
#define NS_CLEAR_BIT(rowptr, x) (rowptr[(x)>>3] &= ~(1<<(7-(x)&0x7)))
// Defining this will trace the allocation of images. This includes
// ctor, dtor and update.
@ -344,6 +345,7 @@ void nsImageGTK::UpdateCachedImage()
NS_SET_BIT(mask,x);
break;
case 0:
NS_CLEAR_BIT(mask,x);
if (mAlphaDepth != 8)
mAlphaDepth=1;
break;