UINT32 laserdisc_device::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
{
// handle the overlay if present
screen_bitmap &overbitmap = m_overbitmap[m_overindex];
if (overbitmap.valid() && (!m_overupdate_ind16.isnull() || !m_overupdate_rgb32.isnull()))
{
// scale the cliprect to the overlay size
rectangle clip(m_overclip);
clip.min_y = cliprect.min_y * overbitmap.height() / bitmap.height();
if (cliprect.min_y == screen.visible_area().min_y)
clip.min_y = MIN(clip.min_y, m_overclip.min_y);
clip.max_y = (cliprect.max_y + 1) * overbitmap.height() / bitmap.height() - 1;
// call the update callback
if (!m_overupdate_ind16.isnull())
m_overupdate_ind16(screen, overbitmap.as_ind16(), clip);
else
m_overupdate_rgb32(screen, overbitmap.as_rgb32(), clip);
}
// if this is the last update, do the rendering
if (cliprect.max_y == screen.visible_area().max_y)
{
// update the texture with the overlay contents
if (overbitmap.valid())
m_overtex->set_bitmap(overbitmap, m_overclip, overbitmap.texformat());
// get the laserdisc video
bitmap_yuy16 &vidbitmap = get_video();
m_videotex->set_bitmap(vidbitmap, vidbitmap.cliprect(), TEXFORMAT_YUY16);
// reset the screen contents
screen.container().empty();
// add the video texture
if (m_videoenable)
screen.container().add_quad(0.0f, 0.0f, 1.0f, 1.0f, rgb_t(0xff,0xff,0xff,0xff), m_videotex, PRIMFLAG_BLENDMODE(BLENDMODE_NONE) | PRIMFLAG_SCREENTEX(1));
// add the overlay
if (m_overenable && overbitmap.valid())
{
float x0 = 0.5f - 0.5f * m_overscalex + m_overposx;
float y0 = 0.5f - 0.5f * m_overscaley + m_overposy;
float x1 = x0 + m_overscalex;
float y1 = y0 + m_overscaley;
screen.container().add_quad(x0, y0, x1, y1, rgb_t(0xff,0xff,0xff,0xff), m_overtex, PRIMFLAG_BLENDMODE(BLENDMODE_ALPHA) | PRIMFLAG_SCREENTEX(1));
}
// swap to the next bitmap
m_overindex = (m_overindex + 1) % ARRAY_LENGTH(m_overbitmap);
}
return 0;
}
void gpworld_state::draw_pixel(bitmap_rgb32 &bitmap,const rectangle &cliprect,int x,int y,int color,int flip)
{
if (flip)
{
x = bitmap.width() - x - 1;
y = bitmap.height() - y - 1;
}
if (cliprect.contains(x, y))
bitmap.pix32(y, x) = m_palette->pen(color);
}
INLINE void draw_pixel(running_machine &machine, bitmap_rgb32 &bitmap,const rectangle &cliprect,int x,int y,int color,int flip)
{
if (flip)
{
x = bitmap.width() - x - 1;
y = bitmap.height() - y - 1;
}
if (cliprect.contains(x, y))
bitmap.pix32(y, x) = machine.pens[color];
}
static inline void K053936GP_copyroz32clip( running_machine &machine,
bitmap_rgb32 &dst_bitmap, bitmap_ind16 &src_bitmap,
const rectangle &dst_cliprect, const rectangle &src_cliprect,
UINT32 _startx,UINT32 _starty,int _incxx,int _incxy,int _incyx,int _incyy,
int tilebpp, int blend, int alpha, int clip, int pixeldouble_output, palette_device *palette )
{
static const int colormask[8]={1,3,7,0xf,0x1f,0x3f,0x7f,0xff};
int cy, cx;
int ecx;
int src_pitch, incxy, incxx;
int src_minx, src_maxx, src_miny, src_maxy, cmask;
UINT16 *src_base;
size_t src_size;
const pen_t *pal_base;
int dst_ptr;
int dst_size;
int dst_base2;
int tx, dst_pitch;
UINT32 *dst_base;
int starty, incyy, startx, incyx, ty, sx, sy;
incxy = _incxy; incxx = _incxx; incyy = _incyy; incyx = _incyx;
starty = _starty; startx = _startx;
if (clip) // set source clip range to some extreme values when disabled
{
src_minx = src_cliprect.min_x;
src_maxx = src_cliprect.max_x;
src_miny = src_cliprect.min_y;
src_maxy = src_cliprect.max_y;
}
// this simply isn't safe to do!
else { src_minx = src_miny = -0x10000; src_maxx = src_maxy = 0x10000; }
// set target clip range
sx = dst_cliprect.min_x;
tx = dst_cliprect.max_x - sx + 1;
sy = dst_cliprect.min_y;
ty = dst_cliprect.max_y - sy + 1;
startx += sx * incxx + sy * incyx;
starty += sx * incxy + sy * incyy;
// adjust entry points and other loop constants
dst_pitch = dst_bitmap.rowpixels();
dst_base = &dst_bitmap.pix32(0);
dst_base2 = sy * dst_pitch + sx + tx;
ecx = tx = -tx;
tilebpp = (tilebpp-1) & 7;
pal_base = palette->pens();
cmask = colormask[tilebpp];
src_pitch = src_bitmap.rowpixels();
src_base = &src_bitmap.pix16(0);
src_size = src_bitmap.width() * src_bitmap.height();
dst_size = dst_bitmap.width() * dst_bitmap.height();
dst_ptr = 0;//dst_base;
cy = starty;
cx = startx;
if (blend > 0)
{
dst_ptr += dst_pitch; // draw blended
starty += incyy;
startx += incyx;
do {
do {
int srcx = (cx >> 16) & 0x1fff;
int srcy = (cy >> 16) & 0x1fff;
int pixel;
UINT32 offs;
offs = srcy * src_pitch + srcx;
cx += incxx;
cy += incxy;
if (offs>=src_size)
continue;
if (srcx < src_minx || srcx > src_maxx || srcy < src_miny || srcy > src_maxy)
continue;
pixel = src_base[offs];
if (!(pixel & cmask))
continue;
if ((dst_ptr+ecx+dst_base2)<dst_size) dst_base[dst_ptr+ecx+dst_base2] = alpha_blend_r32(pal_base[pixel], dst_base[dst_ptr+ecx+dst_base2], alpha);
if (pixeldouble_output)
{
ecx++;
if ((dst_ptr+ecx+dst_base2)<dst_size) dst_base[dst_ptr+ecx+dst_base2] = alpha_blend_r32(pal_base[pixel], dst_base[dst_ptr+ecx+dst_base2], alpha);
}
}
while (++ecx < 0);
ecx = tx;
dst_ptr += dst_pitch;
cy = starty; starty += incyy;
cx = startx; startx += incyx;
} while (--ty);
}
/* mix & blend the paletted 16-bit tile and sprite bitmaps into an RGB 32-bit bitmap */
static void blendbitmaps(running_machine &machine,
bitmap_rgb32 &dest,bitmap_ind16 &src1,bitmap_ind16 &src2,bitmap_ind16 &src3,
int sx,int sy,const rectangle &clip)
{
int ox;
int oy;
int ex;
int ey;
/* check bounds */
ox = sx;
oy = sy;
ex = sx + src1.width() - 1;
if (sx < 0) sx = 0;
if (sx < clip.min_x) sx = clip.min_x;
if (ex >= dest.width()) ex = dest.width() - 1;
if (ex > clip.max_x) ex = clip.max_x;
if (sx > ex) return;
ey = sy + src1.height() - 1;
if (sy < 0) sy = 0;
if (sy < clip.min_y) sy = clip.min_y;
if (ey >= dest.height()) ey = dest.height() - 1;
if (ey > clip.max_y) ey = clip.max_y;
if (sy > ey) return;
{
const pen_t *paldata = machine.pens;
UINT32 *end;
UINT16 *sd1 = &src1.pix16(0);
UINT16 *sd2 = &src2.pix16(0);
UINT16 *sd3 = &src3.pix16(0);
int sw = ex-sx+1; /* source width */
int sh = ey-sy+1; /* source height */
int sm = src1.rowpixels(); /* source modulo */
UINT32 *dd = &dest.pix32(sy, sx); /* dest data */
int dm = dest.rowpixels(); /* dest modulo */
sd1 += (sx-ox);
sd1 += sm * (sy-oy);
sd2 += (sx-ox);
sd2 += sm * (sy-oy);
sd3 += (sx-ox);
sd3 += sm * (sy-oy);
sm -= sw;
dm -= sw;
while (sh)
{
#define BLENDPIXEL(x) if (sd3[x]) { \
if (sd2[x]) { \
dd[x] = paldata[sd2[x] | 0x0400] + paldata[sd3[x]]; \
} else { \
dd[x] = paldata[sd1[x] | 0x0400] + paldata[sd3[x]]; \
} \
} else { \
if (sd2[x]) { \
if (sd2[x] & 0x0800) { \
dd[x] = paldata[sd1[x] | 0x0400] + paldata[sd2[x]]; \
} else { \
dd[x] = paldata[sd2[x]]; \
} \
} else { \
dd[x] = paldata[sd1[x]]; \
} \
}
end = dd + sw;
while (dd <= end - 8)
{
BLENDPIXEL(0);
BLENDPIXEL(1);
BLENDPIXEL(2);
BLENDPIXEL(3);
BLENDPIXEL(4);
BLENDPIXEL(5);
BLENDPIXEL(6);
BLENDPIXEL(7);
dd += 8;
sd1 += 8;
sd2 += 8;
sd3 += 8;
}
while (dd < end)
{
BLENDPIXEL(0);
dd++;
sd1++;
sd2++;
sd3++;
}
dd += dm;
sd1 += sm;
sd2 += sm;
sd3 += sm;
sh--;
#undef BLENDPIXEL
}
}
}