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fmtowns: support partial updates and use for palette changes (nw)

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This commit is contained in:
cracyc 2017-12-17 22:02:33 -06:00
parent 0d6d246fa8
commit 9cb22761f2
2 changed files with 37 additions and 21 deletions
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2
src/mame/includes/fmtowns.h
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@ -105,6 +105,7 @@ class towns_state : public driver_device
m_icmemcard(*this, "icmemcard"),
m_i8251(*this, "i8251"),
m_rs232(*this, "rs232c"),
m_screen(*this, "screen"),
m_nvram(*this, "nvram"),
m_nvram16(*this, "nvram16"),
m_ctrltype(*this, "ctrltype"),
@ -142,6 +143,7 @@ class towns_state : public driver_device
required_device<fmt_icmem_device> m_icmemcard;
required_device<i8251_device> m_i8251;
required_device<rs232_port_device> m_rs232;
required_device<screen_device> m_screen;
ram_device* m_messram;
cdrom_image_device* m_cdrom;
cdda_device* m_cdda;

56
src/mame/video/fmtowns.cpp
View File

@ -504,6 +504,8 @@ void towns_state::towns_update_palette()
m_palette->set_pen_color(entry, r, g, b);
break;
}
if(!m_screen->vblank())
m_screen->update_partial(m_screen->vpos());
}
/* Video/CRTC
@ -1545,52 +1547,56 @@ void towns_state::towns_crtc_draw_layer(bitmap_rgb32 &bitmap,const rectangle* re
{
int line;
int scanline;
int height;
int bottom;
int top;
uint8_t zoom;
uint8_t count;
if(layer == 0)
{
scanline = rect->min_y;
height = (rect->max_y - rect->min_y);
top = (scanline - m_video.towns_crtc_layerscr[0].min_y);
bottom = (rect->max_y - rect->min_y) + top;
zoom = ((m_video.towns_crtc_reg[27] & 0x00f0) >> 4) + 1;
height /= zoom;
count = top % zoom;
bottom /= zoom;
top /= zoom;
switch(m_video.towns_video_reg[0] & 0x03)
{
case 0x01:
for(line=0;line<height;line++)
for(line=top;line<=bottom;line++)
{
count = 0;
do
{
towns_crtc_draw_scan_layer_16(bitmap,rect,layer,line,scanline);
scanline++;
count++;
} while(count < zoom);
count = 0;
}
break;
case 0x02:
for(line=0;line<height;line++)
for(line=top;line<=bottom;line++)
{
count = 0;
do
{
towns_crtc_draw_scan_layer_256(bitmap,rect,layer,line,scanline);
scanline++;
count++;
} while(count < zoom);
count = 0;
}
break;
case 0x03:
for(line=0;line<height;line++)
for(line=top;line<=bottom;line++)
{
count = 0;
do
{
towns_crtc_draw_scan_layer_hicolour(bitmap,rect,layer,line,scanline);
scanline++;
count++;
} while(count < zoom);
count = 0;
}
break;
}
@ -1598,45 +1604,48 @@ void towns_state::towns_crtc_draw_layer(bitmap_rgb32 &bitmap,const rectangle* re
else
{
scanline = rect->min_y;
height = (rect->max_y - rect->min_y);
top = (scanline - m_video.towns_crtc_layerscr[1].min_y);
bottom = (rect->max_y - rect->min_y) + top;
zoom = ((m_video.towns_crtc_reg[27] & 0xf000) >> 12) + 1;
height /= zoom;
count = top % zoom;
bottom /= zoom;
top /= zoom;
switch(m_video.towns_video_reg[0] & 0x0c)
{
case 0x04:
for(line=0;line<height;line++)
for(line=top;line<=bottom;line++)
{
count = 0;
do
{
towns_crtc_draw_scan_layer_16(bitmap,rect,layer,line,scanline);
scanline++;
count++;
} while(count < zoom);
count = 0;
}
break;
case 0x08:
for(line=0;line<height;line++)
for(line=top;line<=bottom;line++)
{
count = 0;
do
{
towns_crtc_draw_scan_layer_256(bitmap,rect,layer,line,scanline);
scanline++;
count++;
} while(count < zoom);
count = 0;
}
break;
case 0x0c:
for(line=0;line<height;line++)
for(line=top;line<=bottom;line++)
{
count = 0;
do
{
towns_crtc_draw_scan_layer_hicolour(bitmap,rect,layer,line,scanline);
scanline++;
count++;
} while(count < zoom);
count = 0;
}
break;
}
@ -1806,19 +1815,24 @@ uint32_t towns_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap,
layer2_en = false;
}
rectangle cliplayer0 = m_video.towns_crtc_layerscr[0];
cliplayer0 &= cliprect;
rectangle cliplayer1 = m_video.towns_crtc_layerscr[1];
cliplayer1 &= cliprect;
if(!(m_video.towns_video_reg[1] & 0x01))
{
if((m_video.towns_layer_ctrl & 0x03) != 0 && layer1_en)
towns_crtc_draw_layer(bitmap,&m_video.towns_crtc_layerscr[1],1);
towns_crtc_draw_layer(bitmap,&cliplayer1,1);
if((m_video.towns_layer_ctrl & 0x0c) != 0 && layer2_en)
towns_crtc_draw_layer(bitmap,&m_video.towns_crtc_layerscr[0],0);
towns_crtc_draw_layer(bitmap,&cliplayer0,0);
}
else
{
if((m_video.towns_layer_ctrl & 0x0c) != 0 && layer1_en)
towns_crtc_draw_layer(bitmap,&m_video.towns_crtc_layerscr[0],0);
towns_crtc_draw_layer(bitmap,&cliplayer0,0);
if((m_video.towns_layer_ctrl & 0x03) != 0 && layer2_en)
towns_crtc_draw_layer(bitmap,&m_video.towns_crtc_layerscr[1],1);
towns_crtc_draw_layer(bitmap,&cliplayer1,1);
}
#if 0