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Better layer alignment for laserbat/lazarian/catnmous

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This commit is contained in:
Vas Crabb 2015-12-27 16:57:17 +11:00
parent fa73089b8f
commit 2bcc8b2dd8
2 changed files with 9 additions and 9 deletions
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6
src/mame/drivers/laserbat.cpp
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@ -541,15 +541,15 @@ static MACHINE_CONFIG_START( laserbat_base, laserbat_state_base )
MCFG_PLS100_ADD("gfxmix")
MCFG_DEVICE_ADD("pvi1", S2636, XTAL_14_31818MHz/3)
MCFG_S2636_OFFSETS(-8, -24)
MCFG_S2636_OFFSETS(-8, -16)
MCFG_S2636_DIVIDER(3)
MCFG_DEVICE_ADD("pvi2", S2636, XTAL_14_31818MHz/3)
MCFG_S2636_OFFSETS(-8, -24)
MCFG_S2636_OFFSETS(-8, -16)
MCFG_S2636_DIVIDER(3)
MCFG_DEVICE_ADD("pvi3", S2636, XTAL_14_31818MHz/3)
MCFG_S2636_OFFSETS(-8, -24)
MCFG_S2636_OFFSETS(-8, -16)
MCFG_S2636_DIVIDER(3)
MCFG_GFXDECODE_ADD("gfxdecode", "palette", laserbat)

12
src/mame/video/laserbat.cpp
View File

@ -326,7 +326,7 @@ TIMER_CALLBACK_MEMBER(laserbat_state_base::video_line)
// render the TTL-generated background tilemap
unsigned const bg_row = (y - y_offset) & 0x07;
UINT8 const *const bg_src = &m_bg_ram[((y - y_offset) << 2) & 0x3e0];
for (unsigned byte = 0, px = x_offset; max_x >= px; byte++)
for (unsigned byte = 0, px = x_offset + (9 * 3); max_x >= px; byte++)
{
UINT16 const tile = (UINT16(bg_src[byte & 0x1f]) << 3) & 0x7f8;
UINT8 red = m_gfx1[0x0000 | tile | bg_row];
@ -351,15 +351,15 @@ TIMER_CALLBACK_MEMBER(laserbat_state_base::video_line)
{
// calculate area effects
// I have no idea where the magical x offset comes from but it's necessary
bool const right_half = bool((x + 8) & 0x80);
bool const eff1_cmp = right_half ? (UINT8((x + 8) & 0x7f) < (eff1_val & 0x7f)) : (UINT8((x + 8) & 0x7f) > (~eff1_val & 0x7f));
bool const eff2_cmp = right_half ? (UINT8((x + 8) & 0x7f) < (eff2_val & 0x7f)) : (UINT8((x + 8) & 0x7f) > (~eff2_val & 0x7f));
bool const right_half = bool((x + 0) & 0x80);
bool const eff1_cmp = right_half ? (UINT8((x + 0) & 0x7f) < (eff1_val & 0x7f)) : (UINT8((x + 0) & 0x7f) > (~eff1_val & 0x7f));
bool const eff2_cmp = right_half ? (UINT8((x + 0) & 0x7f) < (eff2_val & 0x7f)) : (UINT8((x + 0) & 0x7f) > (~eff2_val & 0x7f));
bool const eff1 = m_abeff1 && (m_neg1 ? !eff1_cmp : eff1_cmp);
bool const eff2 = m_abeff2 && (m_neg2 ? !eff2_cmp : eff2_cmp) && m_mpx_eff2_sh;
// calculate shell point effect
// using the same magical offset as the area effects
bool const shell = m_abeff2 && (UINT8((x + 8) & 0xff) == (eff2_val & 0xff)) && !m_mpx_eff2_sh;
bool const shell = m_abeff2 && (UINT8((x + 0) & 0xff) == (eff2_val & 0xff)) && !m_mpx_eff2_sh;
// set effect bits, and mix in PVI graphics while we're here
UINT16 const effect_bits = (shell ? 0x0800 : 0x0000) | (eff1 ? 0x1000 : 0x0000) | (eff2 ? 0x2000 : 0x0000);
@ -380,7 +380,7 @@ TIMER_CALLBACK_MEMBER(laserbat_state_base::video_line)
int const sprite_row = y + y_offset - ((256 - m_wcov) & 0x0ff);
if ((0 <= sprite_row) && (32 > sprite_row))
{
for (unsigned byte = 0, x = x_offset + (3 * ((256 - m_wcoh - 4) & 0x0ff)); 8 > byte; byte++)
for (unsigned byte = 0, x = x_offset + (3 * ((256 - m_wcoh + 5) & 0x0ff)); 8 > byte; byte++)
{
UINT8 bits = m_gfx2[((m_shp << 8) & 0x700) | ((sprite_row << 3) & 0x0f8) | (byte & 0x07)];
for (unsigned pixel = 0; 4 > pixel; pixel++, bits <<= 2)