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Working PAL color blend emulation. Next step is only perfom blend based on the colors luma values.

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This commit is contained in:
robcfg 2019-05-02 22:27:49 +02:00
parent efdbbb6593
commit ac76ec42c7
2 changed files with 42 additions and 1 deletions
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13
src/devices/video/mc6847.cpp
View File

@ -903,7 +903,14 @@ 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 */
m_artifacter.process_artifacts<1>(bitmap_addr(bitmap, y + base_y, base_x), m_data[y].m_mode[0], palette);
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 +1682,7 @@ 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;
@ -1824,6 +1832,7 @@ 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 +1855,7 @@ 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 +1878,7 @@ 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);
}

30
src/devices/video/mc6847.h
View File

@ -179,8 +179,37 @@ 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; }
// 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_GM0)) == MODE_AS )
{
uint32_t tmpPixel;
pixel_t *line1 = &bitmap.pix32(y + base_y, base_x);
pixel_t *line2 = &bitmap.pix32(y + base_y + 1, base_x);
for( int pixel = 0; pixel < bitmap.width(); ++pixel )
{
if( line1[pixel] != line2[pixel] )
{
tmpPixel = (( ((line1[pixel] & 0xFF0000) >> 16) + ((line2[pixel] & 0xFF0000) >> 16) / 2) << 16);
tmpPixel |= (( ((line1[pixel] & 0xFF00 ) >> 8 ) + ((line2[pixel] & 0xFF00 ) >> 8 ) / 2) << 8 );
tmpPixel |= ( ( line1[pixel] & 0xFF ) + (line2[pixel] & 0xFF ) ) / 2;
line1[pixel] = tmpPixel;
line2[pixel] = tmpPixel;
}
}
}
}
template<int xscale>
ATTR_FORCE_INLINE void process_artifacts(pixel_t *pixels, uint8_t mode, const pixel_t *palette)
{
@ -218,6 +247,7 @@ protected:
}
private:
bool m_palartifacting;
ioport_port *m_config;
ioport_value m_artifacting;
ioport_value m_saved_artifacting;