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buggychl.cpp: fixed background pen and clipping enable (fixes title screen and stage 3 graphics) [Angelo Salese]

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This commit is contained in:
angelosa 2017-09-21 01:50:23 +02:00
parent 4597cfea68
commit 6a61136c45
2 changed files with 10 additions and 7 deletions
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2
src/mame/includes/buggychl.h
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@ -43,7 +43,7 @@ public:
bitmap_ind16 m_tmp_bitmap2;
tilemap_t *m_bg_tilemap;
int m_sl_bank;
int m_bg_on;
int m_bg_clip_on;
int m_sky_on;
int m_sprite_color_base;
int m_bg_scrollx;

15
src/mame/video/buggychl.cpp
View File

@ -58,7 +58,7 @@ WRITE8_MEMBER(buggychl_state::buggychl_ctrl_w)
flip_screen_y_set(data & 0x01);
flip_screen_x_set(data & 0x02);
m_bg_on = data & 0x04;
m_bg_clip_on = data & 0x04;
m_sky_on = data & 0x08;
m_sprite_color_base = (data & 0x10) ? 1 * 16 : 3 * 16;
@ -88,8 +88,12 @@ void buggychl_state::draw_bg( bitmap_ind16 &bitmap, const rectangle &cliprect )
/* prevent wraparound */
rectangle clip = cliprect;
if (flip_screen_x()) clip.min_x += 8*8;
else clip.max_x -= 8*8;
// enable clipping if on (title screen disable this to cover all of the area)
if(m_bg_clip_on)
{
if (flip_screen_x()) clip.min_x += 8*8;
else clip.max_x -= 8*8;
}
for (offs = 0; offs < 0x400; offs++)
{
@ -228,10 +232,9 @@ uint32_t buggychl_state::screen_update_buggychl(screen_device &screen, bitmap_in
if (m_sky_on)
draw_sky(bitmap, cliprect);
else
bitmap.fill(0, cliprect);
bitmap.fill(0x20, cliprect); // stage 3 disables sky, wants background pen to be blue
if (m_bg_on)
draw_bg(bitmap, cliprect);
draw_bg(bitmap, cliprect);
draw_sprites(bitmap, cliprect);