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nec/pc88va_v.cpp: draw sprites to odd lines when MG is 1

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This commit is contained in:
angelosa 2025-03-08 18:27:52 +01:00
parent 8e9f5d9e1d
commit 913612c42b
1 changed files with 18 additions and 10 deletions
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28
src/mame/nec/pc88va_v.cpp
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@ -246,6 +246,7 @@ void pc88va_state::draw_sprites(bitmap_rgb32 &bitmap, const rectangle &cliprect)
}
}
// TODO: std::function
if(md) // 1bpp mode
{
int fg_col = (tvram[(offs + i + 6) / 2] & 0xf0) >> 4;
@ -268,19 +269,22 @@ void pc88va_state::draw_sprites(bitmap_rgb32 &bitmap, const rectangle &cliprect)
for(int x_s = 0; x_s < 16; x_s++)
{
int res_x = xp + x_i + x_s;
// TODO: MG actually doubles Y size
int res_y = (yp + y_i) << m_tsp.spr_mg;
if (!cliprect.contains(res_x, res_y))
continue;
const u32 data_offset = ((spda + spr_count) & 0xffff) / 2;
u8 pen = (bitswap<16>(tvram[data_offset],7,6,5,4,3,2,1,0,15,14,13,12,11,10,9,8) >> (15 - x_s)) & 1;
pen = pen & 1 ? fg_col : (bc) ? 8 : 0;
if(pen != 0)
bitmap.pix(res_y, res_x) = m_palette->pen(pen + layer_pal_bank);
{
for (int mg = 0; mg < m_tsp.spr_mg + 1; mg ++)
{
if (!cliprect.contains(res_x, res_y + mg))
continue;
bitmap.pix(res_y + mg, res_x) = m_palette->pen(pen + layer_pal_bank);
}
}
}
spr_count += 2;
@ -304,16 +308,20 @@ void pc88va_state::draw_sprites(bitmap_rgb32 &bitmap, const rectangle &cliprect)
int res_x = xp + x_i + x_s;
int res_y = (yp + y_i) << m_tsp.spr_mg;
if (!cliprect.contains(res_x, res_y))
continue;
const u32 data_offset = ((spda + spr_count) & 0xffff) / 2;
int pen = (bitswap<16>(tvram[data_offset],7,6,5,4,3,2,1,0,15,14,13,12,11,10,9,8)) >> (12 - (x_s * 4)) & 0xf;
//if (pen != 0 && pen != m_text_transpen)
if (pen != 0)
bitmap.pix(res_y, res_x) = m_palette->pen(pen + layer_pal_bank);
{
for (int mg = 0; mg < m_tsp.spr_mg + 1; mg ++)
{
if (!cliprect.contains(res_x, res_y + mg))
continue;
bitmap.pix(res_y + mg, res_x) = m_palette->pen(pen + layer_pal_bank);
}
}
}
spr_count += 2;
@ -725,7 +733,7 @@ void pc88va_state::draw_graphic_layer(bitmap_rgb32 &bitmap, const rectangle &cli
, layer_pal_bank
);
// m_graphic_bitmap[which].fill(m_palette->pen(layer_pal_bank), cliprect);
// m_graphic_bitmap[which].fill(m_palette->pen(layer_pal_bank), cliprect);
m_graphic_bitmap[which].fill(0, cliprect);
const int layer_inc = (!is_5bpp) + 1;