Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-07-01 00:09:18 +03:00
Code Issues Actions 3 Packages Projects Releases Wiki Activity

k001604: Implemented front layer rotate and zoom. [Ville Linde]

Browse Source
This commit is contained in:
Ville Linde 2018-01-08 02:01:57 +02:00
parent ffbc31a9a2
commit f1497bb159
1 changed files with 64 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

70
src/mame/video/k001604.cpp
View File

@ -274,14 +274,72 @@ void k001604_device::draw_back_layer( bitmap_rgb32 &bitmap, const rectangle &cli
void k001604_device::draw_front_layer( screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect )
{
m_layer_8x8[0]->set_scrollx(-cliprect.min_x);
m_layer_8x8[0]->set_scrolly(-cliprect.min_y);
int32_t x = (int16_t)((m_reg[0x00] >> 16) & 0xffff);
int32_t y = (int16_t)((m_reg[0x00] >> 0) & 0xffff);
int32_t yy = (int16_t)((m_reg[0x01] >> 0) & 0xffff);
int32_t xy = (int16_t)((m_reg[0x01] >> 16) & 0xffff);
int32_t yx = (int16_t)((m_reg[0x02] >> 0) & 0xffff);
int32_t xx = (int16_t)((m_reg[0x02] >> 16) & 0xffff);
m_layer_8x8[1]->set_scrollx(-cliprect.min_x);
m_layer_8x8[1]->set_scrolly(-cliprect.min_y);
int pivotx = (int16_t)(0xfec0);
int pivoty = (int16_t)(0xff28);
int startx = ((x - pivotx) * 256) * 32;
int starty = ((y - pivoty) * 256) * 32;
int incxx = (xx) * 32;
int incxy = (-xy) * 32;
int incyx = (-yx) * 32;
int incyy = (yy) * 32;
//m_layer_8x8[1]->draw(bitmap, cliprect, 0,0);
m_layer_8x8[0]->draw(screen, bitmap, cliprect, 0,0);
bitmap_ind16& pixmap = m_layer_8x8[0]->pixmap();
// extract start/end points
int sx = cliprect.min_x;
int sy = cliprect.min_y;
int ex = cliprect.max_x;
int ey = cliprect.max_y;
const rgb_t *clut = palette().palette()->entry_list_raw();
int window_x, window_y, window_xmask, window_ymask;
window_x = 0;
window_y = 0;
window_xmask = pixmap.width() - 1;
window_ymask = pixmap.height() - 1;
// loop over rows
while (sy <= ey)
{
// initialize X counters
int x = sx;
uint32_t cx = startx;
uint32_t cy = starty;
uint32_t *dest = &bitmap.pix(sy, sx);
// loop over columns
while (x <= ex)
{
uint16_t pix = pixmap.pix16(((cy >> 16) & window_ymask) + window_y, ((cx >> 16) & window_xmask) + window_x);
if ((pix & 0xff) != 0)
{
*dest = clut[pix];
}
// advance in X
cx += incxx;
cy += incxy;
x++;
dest++;
}
// advance in Y
startx += incyx;
starty += incyy;
sy++;
}
}
READ32_MEMBER( k001604_device::tile_r )