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Fixed A2 masking in the blitter

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This commit is contained in:
Angelo Salese 2010-05-11 15:24:15 +00:00
parent d10671714b
commit ed52c63984
1 changed files with 3 additions and 3 deletions
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6
src/mame/video/jagblit.c
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@ -236,8 +236,8 @@ static void FUNCNAME(running_machine *machine, UINT32 command, UINT32 a1flags, U
/* set up the A2 mask */ /* set up the A2 mask */
if (A2FIXED & 0x00008000) if (A2FIXED & 0x00008000)
{ {
a2_xmask = (blitter_regs[A2_MASK] << 16) | 0xffff; a2_xmask = ((blitter_regs[A2_MASK] & 0x0000ffff) << 16) | 0xffff;
a2_ymask = (blitter_regs[A2_MASK] & 0xffff) | 0xffff; a2_ymask = (blitter_regs[A2_MASK] & 0xffff0000) | 0xffff;
} }
/* modify outer loop steps based on command */ /* modify outer loop steps based on command */
@ -431,7 +431,7 @@ static void FUNCNAME(running_machine *machine, UINT32 command, UINT32 a1flags, U
if (adest_phrase_mode || (command & 0x10000000) || !inhibit) if (adest_phrase_mode || (command & 0x10000000) || !inhibit)
{ {
/* write to the destination */ /* write to the destination */
WRITE_PIXEL(adest, adestflags, writedata); WRITE_PIXEL(adest, adestflags, writedata);
if (COMMAND & 0x00000020) if (COMMAND & 0x00000020)
WRITE_ZDATA(adest, adestflags, srczdata); WRITE_ZDATA(adest, adestflags, srczdata);
} }