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Force usage of friend BitMaps on OS3 when on high/truecolour screens.

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AreaInfo buffer doesn't need to be in chip mem.
This commit is contained in:
Chris Young 2015-08-16 23:03:54 +01:00
parent 87ebe66880
commit a2edd98c19
1 changed files with 7 additions and 5 deletions
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12
amiga/plotters.c
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@ -119,24 +119,27 @@ void ami_init_layers(struct gui_globals *gg, ULONG width, ULONG height)
gg->height = height;
gg->layerinfo = NewLayerInfo();
gg->areabuf = AllocVecTagList(AREA_SIZE, NULL);
#ifdef __amigaos4__
gg->areabuf = AllocVecTagList(AREA_SIZE, NULL);
gg->tmprasbuf = AllocVecTagList(width * height, NULL);
#else
/* OS3/AGA requries these to be in chip mem */
gg->areabuf = AllocVec(AREA_SIZE, MEMF_CHIP);
/* OS3/AGA requires this to be in chip mem. RTG would probably rather it wasn't. */
gg->tmprasbuf = AllocVec(width * height, MEMF_CHIP);
#endif
/* Friend BitMaps are weird.
* For OS4, we shouldn't use a friend BitMap here (see below).
* For OS3 AGA, we get no display blitted if we use a friend BitMap,
* however on RTG it seems to be a benefit. Hence this user-adjustable option.
* however on RTG it seems to be a benefit.
*/
#ifndef __amigaos4__
if(nsoption_bool(friend_bitmap) == true) {
friend = scrn->RastPort.BitMap;
} else {
/* Force friend BitMaps on for obvious RTG screens under OS3.
* If we get a bit smarter about this we can lose the user option. */
if(depth >= 16) friend = scrn->RastPort.BitMap;
}
#endif
@ -147,7 +150,6 @@ void ami_init_layers(struct gui_globals *gg, ULONG width, ULONG height)
/* 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.
* Note that this is forced on, the option is only used under OS3.
*/
if(depth >= 24) friend = scrn->RastPort.BitMap;
#endif