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added missing x source bit

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This commit is contained in:
David Haywood 2013-03-01 17:51:13 +00:00
parent 8b1e61efb9
commit a4417dc1e6
1 changed files with 8 additions and 4 deletions
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12
src/mame/drivers/gunpey.c
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@ -239,8 +239,11 @@ UINT8 gunpey_state::draw_gfx(running_machine &machine, bitmap_ind16 &bitmap,cons
int color;
UINT8 *vram = memregion("vram")->base();
// there doesn't seem to be a specific bit to mark compressed sprites (we currently have a hack to look at the first byte of the data)
// do they get decompressed at blit time instead? of are there other registers we need to look at
// +0 +1 +2 +3 +4 +5 +6 +7
// cccc cccc e--b b--- | xxxx ---- u--- ---- | yyyy yy-- --XX XXXX | nnnn nnnn ---Y YYYY | mmmm mmmm -MMM -NNN | hhhh hhhh wwww wwww | ---- ---- oooo oooo | pppp pppp ---- ---- |
// cccc cccc e--b b--- | xxxx x--- u--t tttt | yyyy yy-- --XX XXXX | nnnn nnnn ---Y YYYY | mmmm mmmm -MMM -NNN | hhhh hhhh wwww wwww | ---- ---- oooo oooo | pppp pppp ---- ---- |
// c = color palette
// e = END marker
@ -258,6 +261,7 @@ UINT8 gunpey_state::draw_gfx(running_machine &machine, bitmap_ind16 &bitmap,cons
// u = unknown, set on text, maybe 'solid' ?
// o = zoom width
// p = zoom height
// t = transparency / alpha related? (0x10 on player cursor, 0xf when swapping, other values at other times..)
const int debug = 0;
if(!(m_wram[count+0] & 1))
@ -277,13 +281,13 @@ UINT8 gunpey_state::draw_gfx(running_machine &machine, bitmap_ind16 &bitmap,cons
//UINT32 col = 0xffffff;
// UINT32 val = (m_wram[count+1] << 16) | ((m_wram[count+2]));
int xsource = ((m_wram[count+2] & 0x003f) << 4) | ((m_wram[count+1] & 0xf000) >> 12);
int xsource = ((m_wram[count+2] & 0x003f) << 5) | ((m_wram[count+1] & 0xf800) >> 11);
int ysource = ((m_wram[count+3] & 0x001f) << 6) | ((m_wram[count+2] & 0xfc00) >> 10);
//printf("%08x %04x %04x\n", val, m_wram[count+1],m_wram[count+2] );
// UINT16 xsource = (m_wram[count+2] & 0x00ff << 4) | (m_wram[count+1] & 0xf000 >> 12);
//xsource<<=1;
xsource<<=1;
// xsource<<=1;
// ysource <<=2;
UINT8 testhack = vram[((((ysource+0)&0x7ff)*0x800) + ((xsource+0)&0x7ff))];
@ -299,7 +303,7 @@ UINT8 gunpey_state::draw_gfx(running_machine &machine, bitmap_ind16 &bitmap,cons
if (debug) printf("sprite %04x %04x %04x %04x %04x %04x %04x %04x\n", m_wram[count+0], m_wram[count+1], m_wram[count+2], m_wram[count+3], m_wram[count+4], m_wram[count+5], m_wram[count+6], m_wram[count+7]);
unused = m_wram[count+0]&~0xff98; if (unused) printf("unused bits set in word 0 - %04x\n", unused);
unused = m_wram[count+1]&~0xf080; if (unused) printf("unused bits set in word 1 - %04x\n", unused);
unused = m_wram[count+1]&~0xf89f; if (unused) printf("unused bits set in word 1 - %04x\n", unused);
unused = m_wram[count+2]&~0xfc3f; if (unused) printf("unused bits set in word 2 - %04x\n", unused);
unused = m_wram[count+3]&~0xff1f; if (unused) printf("unused bits set in word 3 - %04x\n", unused);
unused = m_wram[count+4]&~0xff77; if (unused) printf("unused bits set in word 4 - %04x\n", unused);