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Merge pull request #4980 from robcfg/master

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MC6847 PAL color blend emulation
This commit is contained in:
R. Belmont 2019-05-08 09:52:43 -04:00 committed by GitHub
commit 3dab8e3603
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2 changed files with 89 additions and 17 deletions
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68
src/devices/video/mc6847.cpp
View File

@ -99,24 +99,24 @@
const uint32_t mc6847_base_device::s_palette[mc6847_base_device::PALETTE_LENGTH] =
{
rgb_t(0x07, 0xff, 0x00), /* GREEN */
rgb_t(0xff, 0xff, 0x00), /* YELLOW */
rgb_t(0x3b, 0x08, 0xff), /* BLUE */
rgb_t(0xcc, 0x00, 0x3b), /* RED */
rgb_t(0xff, 0xff, 0xff), /* BUFF */
rgb_t(0x07, 0xe3, 0x99), /* CYAN */
rgb_t(0xff, 0x1c, 0xff), /* MAGENTA */
rgb_t(0xff, 0x81, 0x00), /* ORANGE */
rgb_t(0x30, 0xd2, 0x00), /* GREEN */
rgb_t(0xc1, 0xe5, 0x00), /* YELLOW */
rgb_t(0x4c, 0x3a, 0xb4), /* BLUE */
rgb_t(0x9a, 0x32, 0x36), /* RED */
rgb_t(0xbf, 0xc8, 0xad), /* BUFF */
rgb_t(0x41, 0xaf, 0x71), /* CYAN */
rgb_t(0xc8, 0x4e, 0xf0), /* MAGENTA */
rgb_t(0xd4, 0x7f, 0x00), /* ORANGE */
rgb_t(0x00, 0x00, 0x00), /* BLACK */
rgb_t(0x07, 0xff, 0x00), /* GREEN */
rgb_t(0x00, 0x00, 0x00), /* BLACK */
rgb_t(0xff, 0xff, 0xff), /* BUFF */
rgb_t(0x26, 0x30, 0x16), /* BLACK */
rgb_t(0x30, 0xd2, 0x00), /* GREEN */
rgb_t(0x26, 0x30, 0x16), /* BLACK */
rgb_t(0xbf, 0xc8, 0xad), /* BUFF */
rgb_t(0x00, 0x7c, 0x00), /* ALPHANUMERIC DARK GREEN */
rgb_t(0x07, 0xff, 0x00), /* ALPHANUMERIC BRIGHT GREEN */
rgb_t(0x91, 0x00, 0x00), /* ALPHANUMERIC DARK ORANGE */
rgb_t(0xff, 0x81, 0x00) /* ALPHANUMERIC BRIGHT ORANGE */
rgb_t(0x30, 0xd2, 0x00), /* ALPHANUMERIC BRIGHT GREEN */
rgb_t(0x6b, 0x27, 0x00), /* ALPHANUMERIC DARK ORANGE */
rgb_t(0xff, 0xb7, 0x00) /* ALPHANUMERIC BRIGHT ORANGE */
};
@ -558,6 +558,8 @@ mc6847_base_device::mc6847_base_device(const machine_config &mconfig, device_typ
{
m_bw_palette[i] = black_and_white(s_palette[i]);
}
m_artifacter.create_color_blend_table( s_palette );
}
@ -903,7 +905,14 @@ uint32_t mc6847_base_device::screen_update(screen_device &screen, bitmap_rgb32 &
*bitmap_addr(bitmap, y + base_y, x) = border_value(m_data[y].m_mode[width - 1], palette, is_mc6847t1);
/* artifacting */
if( m_artifacter.get_pal_artifacting() )
{
if( y % 2)
m_artifacter.process_artifacts_pal<1>(bitmap, y - 1, base_x, base_y, m_data[y].m_mode[0], palette);
}
else
m_artifacter.process_artifacts<1>(bitmap_addr(bitmap, y + base_y, base_x), m_data[y].m_mode[0], palette);
}
width = m_data[191].m_sample_count;
@ -1675,6 +1684,7 @@ ioport_constructor mc6847_base_device::device_input_ports() const
mc6847_base_device::artifacter::artifacter()
{
m_palartifacting = false;
m_config = nullptr;
m_artifacting = 0;
m_saved_artifacting = 0;
@ -1791,6 +1801,31 @@ mc6847_base_device::pixel_t mc6847_base_device::artifacter::mix_color(double fac
//-------------------------------------------------
// artifacter::create_color_blend_table
//-------------------------------------------------
void mc6847_base_device::artifacter::create_color_blend_table( const pixel_t *palette )
{
// PAL color blend map
m_palcolorblendmap.insert(std::pair<std::pair<pixel_t,pixel_t>,pixel_t>(std::pair<pixel_t,pixel_t>(palette[3],palette[2]),rgb_t(0x7c, 0x2e, 0x81))); /* RED-BLUE */
m_palcolorblendmap.insert(std::pair<std::pair<pixel_t,pixel_t>,pixel_t>(std::pair<pixel_t,pixel_t>(palette[2],palette[3]),rgb_t(0x6b, 0x3e, 0x6b))); /* BLUE-RED */
m_palcolorblendmap.insert(std::pair<std::pair<pixel_t,pixel_t>,pixel_t>(std::pair<pixel_t,pixel_t>(palette[7],palette[6]),rgb_t(0xbe, 0x73, 0x65))); /* ORANGE-MAGENTA */
m_palcolorblendmap.insert(std::pair<std::pair<pixel_t,pixel_t>,pixel_t>(std::pair<pixel_t,pixel_t>(palette[6],palette[7]),rgb_t(0xde, 0x5f, 0x6a))); /* MAGENTA-ORANGE */
m_palcolorblendmap.insert(std::pair<std::pair<pixel_t,pixel_t>,pixel_t>(std::pair<pixel_t,pixel_t>(palette[7],palette[5]),rgb_t(0x7e, 0xa2, 0x00))); /* ORANGE-CYAN */
m_palcolorblendmap.insert(std::pair<std::pair<pixel_t,pixel_t>,pixel_t>(std::pair<pixel_t,pixel_t>(palette[5],palette[7]),rgb_t(0x99, 0x8d, 0x3c))); /* CYAN-ORANGE */
m_palcolorblendmap.insert(std::pair<std::pair<pixel_t,pixel_t>,pixel_t>(std::pair<pixel_t,pixel_t>(palette[5],palette[6]),rgb_t(0x82, 0x80, 0xc5))); /* CYAN-MAGENTA */
m_palcolorblendmap.insert(std::pair<std::pair<pixel_t,pixel_t>,pixel_t>(std::pair<pixel_t,pixel_t>(palette[6],palette[5]),rgb_t(0x89, 0x80, 0x9f))); /* MAGENTA-CYAN */
m_palcolorblendmap.insert(std::pair<std::pair<pixel_t,pixel_t>,pixel_t>(std::pair<pixel_t,pixel_t>(palette[0],palette[5]),rgb_t(0x44, 0xb7, 0x1b))); /* GREEN-CYAN */
m_palcolorblendmap.insert(std::pair<std::pair<pixel_t,pixel_t>,pixel_t>(std::pair<pixel_t,pixel_t>(palette[5],palette[0]),rgb_t(0x4a, 0xf2, 0x70))); /* CYAN-GREEN */
m_palcolorblendmap.insert(std::pair<std::pair<pixel_t,pixel_t>,pixel_t>(std::pair<pixel_t,pixel_t>(palette[1],palette[4]),rgb_t(0xdc, 0xd2, 0x57))); /* YELLOW-BUFF */
m_palcolorblendmap.insert(std::pair<std::pair<pixel_t,pixel_t>,pixel_t>(std::pair<pixel_t,pixel_t>(palette[4],palette[1]),rgb_t(0xd1, 0xf6, 0x95))); /* BUFF-YELLOW */
m_palcolorblendmap.insert(std::pair<std::pair<pixel_t,pixel_t>,pixel_t>(std::pair<pixel_t,pixel_t>(palette[0],palette[6]),rgb_t(0xa6, 0x86, 0x10))); /* GREEN-MAGENTA */
m_palcolorblendmap.insert(std::pair<std::pair<pixel_t,pixel_t>,pixel_t>(std::pair<pixel_t,pixel_t>(palette[6],palette[0]),rgb_t(0x6b, 0xbe, 0xb3))); /* MAGENTA-GREEN */
m_palcolorblendmap.insert(std::pair<std::pair<pixel_t,pixel_t>,pixel_t>(std::pair<pixel_t,pixel_t>(palette[0],palette[7]),rgb_t(0x91, 0xc5, 0x3b))); /* GREEN-ORANGE */
m_palcolorblendmap.insert(std::pair<std::pair<pixel_t,pixel_t>,pixel_t>(std::pair<pixel_t,pixel_t>(palette[7],palette[0]),rgb_t(0xad, 0xbc, 0x22))); /* ORANGE-GREEN */
}
//**************************************************************************
// VARIATIONS
//**************************************************************************
@ -1824,6 +1859,7 @@ mc6847_ntsc_device::mc6847_ntsc_device(const machine_config &mconfig, const char
mc6847_pal_device::mc6847_pal_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
: mc6847_base_device(mconfig, MC6847_PAL, tag, owner, clock, pal_square_fontdata8x12, 313.0)
{
m_artifacter.set_pal_artifacting(true);
}
@ -1846,6 +1882,7 @@ mc6847y_ntsc_device::mc6847y_ntsc_device(const machine_config &mconfig, const ch
mc6847y_pal_device::mc6847y_pal_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
: mc6847_base_device(mconfig, MC6847Y_PAL, tag, owner, clock, pal_square_fontdata8x12, 313.0)
{
m_artifacter.set_pal_artifacting(true);
}
@ -1868,6 +1905,7 @@ mc6847t1_ntsc_device::mc6847t1_ntsc_device(const machine_config &mconfig, const
mc6847t1_pal_device::mc6847t1_pal_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
: mc6847_base_device(mconfig, MC6847T1_PAL, tag, owner, clock, pal_round_fontdata8x12, 313.0)
{
m_artifacter.set_pal_artifacting(true);
}

36
src/devices/video/mc6847.h
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@ -13,7 +13,7 @@
#pragma once
#include "screen.h"
#include <map>
//**************************************************************************
// MC6847 CONFIGURATION / INTERFACE
@ -179,8 +179,38 @@ protected:
// artifacting config
void setup_config(device_t *device);
void poll_config() { m_artifacting = (m_config!=nullptr) ? m_config->read() : 0; }
void set_pal_artifacting( bool palartifacting ) { m_palartifacting = palartifacting; }
bool get_pal_artifacting() { return m_palartifacting; }
void create_color_blend_table( const pixel_t *palette );
// artifacting application
template<int xscale>
void process_artifacts_pal(bitmap_rgb32 &bitmap, int y, int base_x, int base_y, uint8_t mode, const pixel_t *palette)
{
if( !m_artifacting || !m_palartifacting )
return;
if( (mode & MODE_AS) || ((mode & (MODE_AG|MODE_GM0) ) == MODE_AG) )
{
pixel_t *line1 = &bitmap.pix32(y + base_y, base_x);
pixel_t *line2 = &bitmap.pix32(y + base_y + 1, base_x);
std::map<std::pair<pixel_t,pixel_t>,pixel_t>::const_iterator newColor;
for( int pixel = 0; pixel < bitmap.width() - (base_x * 2); ++pixel )
{
if( line1[pixel] == line2[pixel] )
continue;
newColor = m_palcolorblendmap.find(std::pair<pixel_t,pixel_t>(line1[pixel],line2[pixel]));
if( newColor != m_palcolorblendmap.end() )
{
line1[pixel] = newColor->second;
line2[pixel] = newColor->second;
}
}
}
}
template<int xscale>
ATTR_FORCE_INLINE void process_artifacts(pixel_t *pixels, uint8_t mode, const pixel_t *palette)
{
@ -218,12 +248,16 @@ protected:
}
private:
bool m_palartifacting;
ioport_port *m_config;
ioport_value m_artifacting;
ioport_value m_saved_artifacting;
pixel_t m_saved_c0, m_saved_c1;
pixel_t m_expanded_colors[128];
// PAL color blend emulation values.
std::map<std::pair<pixel_t,pixel_t>,pixel_t> m_palcolorblendmap;
void update_colors(pixel_t c0, pixel_t c1);
static pixel_t mix_color(double factor, uint8_t c0, uint8_t c1);
};