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Correct the screen depth check for setting friend bitmaps. 

Add some comments because using friend bitmaps in NetSurf causes problems under OS4.
This commit is contained in:
Chris Young 2015-03-29 23:37:23 +01:00
parent c0469ca905
commit 81f6cd2074
1 changed files with 5 additions and 1 deletions
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6
amiga/plotters.c
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@ -121,6 +121,7 @@ void ami_init_layers(struct gui_globals *gg, ULONG width, ULONG height)
gg->tmprasbuf = AllocVecTagList(width * height, NULL);
#ifndef __amigaos4__
/* If you're wondering why this is #ifdeffed, see the note about OS4 friend bitmaps below */
friend = scrn->RastPort.BitMap;
#endif
@ -128,7 +129,10 @@ void ami_init_layers(struct gui_globals *gg, ULONG width, ULONG height)
gg->bm = AllocBitMap(width, height, depth, 0, friend);
} else {
#ifdef __amigaos4__
if(depth == 32) friend = scrn->RastPort.BitMap;
/* Screen depth is reported as 24 even when it's actually 32-bit.
* We get freezes and other problems on OS4 if we befriend at any
* other depths, hence this check. */
if(depth >= 24) friend = scrn->RastPort.BitMap;
#endif
gg->bm = ami_rtg_allocbitmap(width, height, 32, 0, friend, RGBFB_A8R8G8B8);
}