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segas32.cpp: update todo (nw)
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angelosa
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@ -3,31 +3,48 @@
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/*
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Open questions:
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- In f1en, the scrolling text in attract mode is very jumpy. Whatever
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double buffering they are using seems to be out of sync with the sprite
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rendering.
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- In f1en, the scrolling text in attract mode is very jumpy. Whatever
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double buffering they are using seems to be out of sync with the sprite
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rendering.
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- In radr, NBG1 should be opaque on select screen, and NBG3 should be
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opaque while driving. This is controlled by register $31ff8e
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(respectively $200 and $800), likewise darkedge sets $800 on the first
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attract fight (which has ugly black pens which should be white according
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to the ref)
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- In radr, NBG1 should be opaque on select screen, and NBG3 should be
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opaque while driving.
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This is controlled by register $31ff8e (respectively $200 and $800),
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likewise darkedge sets $800 on the first attract fight
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(which has ugly black pens which should be white according to the ref).
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harddunk sets $0f00 which completely breaks text display if current
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hookup is enabled.
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The theory is that opaque pens should go above background layer and
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behind everything else like System 24.
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- titlef NBG0 and NBG2 layers are currently hidden during gameplay, it
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sets $31ff02 with either $7be0 and $2960 (and $31ff8e is $c00).
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Is it possible that somewhere in the registers there may be a
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Saturn-esque sprite window effect enable to draw the boxing ring
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over NBG0;
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- radr uses $1A0 as the X center for zooming; however, this
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contradicts the theory that bit 9 is a sign bit. For now, the code
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assumes that the X center has 10 bits of resolution.
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- In radr, they use $1A0 as the X center for zooming; however, this
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contradicts the theory that bit 9 is a sign bit. For now, the code
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assumes that the X center has 10 bits of resolution.
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- In svf (the field) and radr (on the field), they use tilemap-specific
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flip in conjunction with rowscroll AND rowselect. According to Charles,
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in this case, the rowselect lookups should be done in reverse order,
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but this results in an incorrect display. For now, we assume there is
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a bug in the procedure and implement it so that it looks correct.
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- In svf (the field) and radr (on the field), they use tilemap-specific
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flip in conjunction with rowscroll AND rowselect. According to Charles,
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in this case, the rowselect lookups should be done in reverse order,
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but this results in an incorrect display. For now, we assume there is
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a bug in the procedure and implement it so that it looks correct.
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- titlef NBG0 and NBG2 layers are currently hidden during gameplay.
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It sets $31ff02 with either $7be0 and $2960 (and $31ff8e is $c00).
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Game actually uses the "rowscroll/rowselect" tables for a line window
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effect to draw the boxing ring over NBG0.
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Same deal for ga2 when in stage 2 cave a wall torch is lit.
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- harddunk draws solid white in attract mode when the players are presented.
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NBG0 is set with $200 on center X/Y, same as above or perhaps missing
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tilemap wraparound?
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- Wrong priority cases (parenthesis for the level setup):
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dbzvrvs: draws text layer ($e) behind sprite-based gauges ($f).
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dbzvrvs: Sheng-Long speech balloon during Piccoro ending (fixme: check levels).
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f1lap: attract mode ranking sprite-based text ($a) vs. road ($d)
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f1lap: attract mode map display (after aforementioned), sprite-based turn names
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($a) are hidden by map ($d) again;
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(Note: Theory about these being CPU core bug(s) is debunked by the fact that latter
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sets up via immediate opcodes)
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Information extracted from below, and from Modeler:
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@ -56,15 +73,15 @@
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---- ---- ---- --1- : 1= X+Y flip for NBG1
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---- ---- ---- ---0 : 1= X+Y flip for NBG0
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$31FF02 : x--- ---- --x- ---- : Bitmap layer enable (?)
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-x-- ---- ---- ---- : 1= NBG3 page wrapping disable (clipping enable according to code?)
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--x- ---- ---- ---- : 1= NBG2 page wrapping disable
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-x-- ---- ---- ---- : 1= NBG3 page wrapping disable (clipping enable according to code?)
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--x- ---- ---- ---- : 1= NBG2 page wrapping disable
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---1 ---- ---- ---- : 1= NBG1 page wrapping disable
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---- 0--- ---- ---- : 1= NBG0 page wrapping disable
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---- -x-- ---- ---- : 1= bitmap layer clipping mode (1=outside)
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---- --x- ---- ---- : 1= NBG3 clipping mode (1=outside)
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---- ---x ---- ---- : 1= NBG2 clipping mode (1=outside)
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---- ---- x--- ---- : 1= NBG1 clipping mode (1=outside)
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---- ---- -x-- ---- : 1= NBG0 clipping mode (1=outside)
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---- -x-- ---- ---- : 1= bitmap layer clipping mode (1=outside)
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---- --x- ---- ---- : 1= NBG3 clipping mode (1=outside)
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---- ---x ---- ---- : 1= NBG2 clipping mode (1=outside)
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---- ---- x--- ---- : 1= NBG1 clipping mode (1=outside)
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---- ---- -x-- ---- : 1= NBG0 clipping mode (1=outside)
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---- ---- --b- ---- : 1= Bitmap layer disable
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---- ---- ---t ---- : 1= Text layer disable
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---- ---- ---- 3--- : 1= NBG3 layer disable
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@ -161,37 +178,6 @@
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reference
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- arabfgt : https://www.youtube.com/watch?v=98QivDAGz3I
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- darkedge : https://www.youtube.com/watch?v=riO1yb95z7s
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====
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back layer setups (register $31ff5e):
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alien3: $0200
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arabfgt: $8000-$81ff -- depending on the scene
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arescue: $0200
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as1: (untested)
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brival: $8000
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darkedge: $0200
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dbzvrvs: $0200
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f1en: $0000
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f1lap: $0000
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ga2: $0200
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harddunk: $8200
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holo: $0200
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jpark: $0200
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kokoroj: (untested)
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kokoroj2: $8000 --
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$8000-$81fc (in steps of 4) -- on introduction/initials scenes
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orunners: $0200
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radm: $0200
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radr: $8200 -- gameplay
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$0200 -- title screen
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scross: $0200
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slipstrm: $0000
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sonic: $0000 -- on sega logo/title screen
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$0200 -- everything else
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spidman: $0200
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svf: $0201 -- on attract
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$0200 -- on gameplay
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titlef: $8200
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*/
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@ -1917,7 +1903,7 @@ void segas32_state::mix_all_layers(int which, int xoffs, bitmap_rgb32 &bitmap, c
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layerorder[groupnum][sprindex].sprblendmask = 0;
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layerorder[groupnum][sprindex].coloroffs = compute_color_offsets(which, (m_mixer_control[which][0x3e/2] >> 6) & 1, (m_mixer_control[which][0x4c/2] >> 15) & 1);
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}
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/*
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/*\
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{
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static const char *const layname[] = { "TEXT", "NBG0", "NBG1", "NBG2", "NBG3", "BITM", "SPRI", "LINE" };
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for (groupnum = 0; groupnum <= sprgroup_mask; groupnum++)
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@ -2595,4 +2581,34 @@ SC: 0003 0000 0000 0000 - 0001 0001 0000 0000
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20: 007F 0366 0000 0364 - 0000 0070 0071 0070 - 0000 4000 4000 4000 - 4000 0000 0000 4000
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40: 0000 0000 0000 0000 - 0000 0000 9E05 0000 - 0000 0000 0000 0000 - 0000 0000 0000 0000
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back layer setups (register $31ff5e):
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alien3: $0200
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arabfgt: $8000-$81ff -- depending on the scene
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arescue: $0200
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as1: $0000
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brival: $8000
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darkedge: $0200
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dbzvrvs: $0200
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f1en: $0000
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f1lap: $0000
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ga2: $0200
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harddunk: $8200
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holo: $0200
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jpark: $0200
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kokoroj: $8000
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kokoroj2: $8000 --
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$8000-$81fc (in steps of 4) -- on introduction/initials scenes
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orunners: $0200
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radm: $0200
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radr: $8200 -- gameplay
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$0200 -- title screen
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scross: $0200
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slipstrm: $0000
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sonic: $0000 -- on sega logo/title screen
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$0200 -- everything else
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spidman: $0200
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svf: $0201 -- on attract
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$0200 -- on gameplay
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titlef: $8200
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*/
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