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found out where dirtdash stores num_sprites

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Michaël Banaan Ananas 2011-10-28 23:03:17 +00:00
parent 5cccc52c8c
commit 1dc09b862d
2 changed files with 9 additions and 3 deletions
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2
src/mame/drivers/namcos22.c
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@ -5772,7 +5772,7 @@ GAME( 1994, alpinerd, 0, namcos22s, alpiner, alpiner, ROT0, "Namco", "
GAME( 1994, alpinerc, alpinerd, namcos22s, alpiner, alpiner, ROT0, "Namco", "Alpine Racer (Rev. AR2 Ver.C)" , GAME_IMPERFECT_SOUND|GAME_IMPERFECT_GRAPHICS )
GAME( 1995, airco22b, 0, namcos22s, airco22, airco22, ROT0, "Namco", "Air Combat 22 (Rev. ACS1 Ver.B, Japan)" , GAME_IMPERFECT_SOUND|GAME_IMPERFECT_GRAPHICS|GAME_NOT_WORKING ) // boots but missing sprite clear DMA?
GAME( 1995, cybrcycc, 0, namcos22s, cybrcycc, cybrcyc, ROT0, "Namco", "Cyber Cycles (Rev. CB2 Ver.C)" , GAME_IMPERFECT_SOUND|GAME_IMPERFECT_GRAPHICS ) // 95/04/04
GAME( 1995, dirtdash, 0, namcos22s, dirtdash, dirtdash, ROT0, "Namco", "Dirt Dash (Rev. DT2)" , GAME_IMPERFECT_SOUND|GAME_IMPERFECT_GRAPHICS|GAME_NOT_WORKING ) // 95/12/20 20:01:56. many issues: slowdown, missing sprites, text layer transparency, spot ram
GAME( 1995, dirtdash, 0, namcos22s, dirtdash, dirtdash, ROT0, "Namco", "Dirt Dash (Rev. DT2)" , GAME_IMPERFECT_SOUND|GAME_IMPERFECT_GRAPHICS|GAME_NOT_WORKING ) // 95/12/20 20:01:56. many issues: slowdown, text layer transparency, spot ram
GAME( 1995, timecris, 0, namcos22s, timecris, timecris, ROT0, "Namco", "Time Crisis (Rev. TS2 Ver.B)" , GAME_IMPERFECT_SOUND|GAME_IMPERFECT_GRAPHICS ) // 96/04/02 18:48:00
GAME( 1995, timecrisa,timecris, namcos22s, timecris, timecris, ROT0, "Namco", "Time Crisis (Rev. TS2 Ver.A)" , GAME_IMPERFECT_SOUND|GAME_IMPERFECT_GRAPHICS ) // 96/01/08 18:56:09
GAME( 1996, propcycl, 0, namcos22s, propcycl, propcycl, ROT0, "Namco", "Prop Cycle (Rev. PR2 Ver.A)" , GAME_IMPERFECT_SOUND|GAME_IMPERFECT_GRAPHICS ) // 96/06/18 21:22:13

10
src/mame/video/namcos22.c
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@ -8,8 +8,8 @@
* - texture u/v mapping is often 1 pixel off, resulting in many glitch lines/gaps between textures
* - tokyowar tanks are not shootable, same for timecris helicopter, there's still a very small hitbox but almost impossible to hit
* (is this related to dsp? or cpu?)
* - no sprites shown in dirtdash: looks like the same issue as airco22b: find out how/where vics num_sprites is determined exactly
* - eliminate sprite garbage in airco22b: find out how/where vics num_sprites is determined exactly, or is it linktable related?
* - find out how/where vics num_sprites is determined exactly, it causes major sprite problems in airco22b
* dirtdash would have this issue too, if not for the current workaround
* - window clipping (acedrvrw, victlapw)
* - using rgbint to set brightness may cause problems if a color channel is 00 (eg. victlapw attract)
* (probably a bug in rgbint, not here?)
@ -1714,7 +1714,13 @@ DrawSprites( running_machine &machine, bitmap_t *bitmap, const rectangle *clipre
0x940060..0x94007c set#2
*/
// where do the games store the number of sprites to be processed by vics???
// the current default implementation (using spritelist size) is clearly wrong and causes problems in dirtdash and airco22b
num_sprites = state->m_vics_control[0x40/4] >> 4 & 0x1ff; // no +1
// dirtdash sprite list starts at xxx4, number of sprites is stored in xxx0, it doesn't use set#2
if (state->m_gametype == NAMCOS22_DIRT_DASH) num_sprites = (state->m_vics_data[(state->m_vics_control[0x48/4]&0x4000)/4] & 0xff) + 1;
if( num_sprites > 0 )
{
pSource = &state->m_vics_data[(state->m_vics_control[0x48/4]&0xffff)/4];