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cps3.cpp: render tilemaps as set of rows from sprite-list (fixes sfiii Alex's stage background)

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This commit is contained in:
MetalliC 2019-09-07 02:24:44 +03:00
parent 6eb37a7714
commit 9d9a747d88
1 changed files with 16 additions and 17 deletions
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33
src/mame/drivers/cps3.cpp
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@ -1004,6 +1004,11 @@ void cps3_state::video_start()
save_pointer(NAME(m_ss_ram), 0x8000);
}
static inline int to_s10(int data)
{
return (data & 0x1ff) - (data & 0x200);
}
// the 0x400 bit in the tilemap regs is "draw it upside-down" (bios tilemap during flashing, otherwise capcom logo is flipped)
void cps3_state::draw_tilemapsprite_line(int tmnum, int drawline, bitmap_rgb32 &bitmap, const rectangle &cliprect)
@ -1059,10 +1064,10 @@ void cps3_state::draw_tilemapsprite_line(int tmnum, int drawline, bitmap_rgb32 &
{
u32 const dat = m_spriteram[mapbase + ((tileline & 63) * 64) + ((x + scrollx / 16) & 63)];
u32 const tileno = (dat & 0xfffe0000) >> 17;
u32 const colour = (dat & 0x000001ff) >> 0;
bool const bpp = (dat & 0x00000200) >> 9;
bool const yflip = (dat & 0x00000800) >> 11;
bool const xflip = (dat & 0x00001000) >> 12;
bool const yflip = (dat & 0x00000800) >> 11;
bool const bpp = (dat & 0x00000200) >> 9;
u32 const colour = (dat & 0x000001ff) >> 0;
if (!bpp) m_gfxdecode->gfx(1)->set_granularity(256);
else m_gfxdecode->gfx(1)->set_granularity(64);
@ -1106,17 +1111,12 @@ void cps3_state::draw_fg_layer(screen_device &screen, bitmap_rgb32 &bitmap, cons
u32 cps3_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
{
attoseconds_t period = screen.frame_period().attoseconds();
rectangle visarea = screen.visible_area();
int bg_drawn[4] = { 0, 0, 0, 0 };
/* registers are normally 002a006f 01ef01c6
widescreen mode = 00230076 026501c6
only SFIII2 uses widescreen, I don't know exactly which register controls it */
int width = ((m_ppu_crtc_zoom[1] & 0xffff0000) >> 16) - (m_ppu_crtc_zoom[0] & 0xffff);
if (width > 0 && m_screenwidth != width)
{
attoseconds_t period = screen.frame_period().attoseconds();
rectangle visarea = screen.visible_area();
int height = ((m_ppu_crtc_zoom[5] & 0xffff0000) >> 16) - (m_ppu_crtc_zoom[4] & 0xffff);
visarea.set(0, width - 1, 0, height - 1);
screen.configure(width, height, visarea, period);
@ -1208,14 +1208,13 @@ u32 cps3_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const
/* Urgh, the startline / endline seem to be direct screen co-ordinates regardless of fullscreen zoom
which probably means the fullscreen zoom is applied when rendering everything, not aftewards */
if (bg_drawn[tilemapnum] == 0) // Hack, tilemaps rendered similar to sprites, but as a screen-wide rows
for (int yy = 0; yy <= ysizedraw2; yy++)
{
for (int uu = m_renderbuffer_clip.top(); uu <= m_renderbuffer_clip.bottom(); uu++)
{
draw_tilemapsprite_line(tilemapnum, uu, m_renderbuffer_bitmap, m_renderbuffer_clip);
}
int cury_pos = to_s10(yy - (to_s10(ypos2) + to_s10(gscrolly))); // OK for sfiii Alex's stage, but not sure if hardware realy works this way
if (cury_pos >= m_renderbuffer_clip.top() && cury_pos <= m_renderbuffer_clip.bottom())
draw_tilemapsprite_line(tilemapnum, cury_pos, m_renderbuffer_bitmap, m_renderbuffer_clip);
}
bg_drawn[tilemapnum] = 1;
}
else
{