static SCREEN_UPDATE( vcombat )
{
vcombat_state *state = screen->machine().driver_data<vcombat_state>();
int y;
const rgb_t *const pens = tlc34076_get_pens(screen->machine().device("tlc34076"));
device_t *aux = screen->machine().device("aux");
UINT16 *m68k_buf = state->m_m68k_framebuffer[(*state->m_framebuffer_ctrl & 0x20) ? 1 : 0];
UINT16 *i860_buf = state->m_i860_framebuffer[(screen == aux) ? 1 : 0][0];
/* TODO: It looks like the leftmost chunk of the ground should really be on the right side? */
/* But the i860 draws the background correctly, so it may be an original game issue. */
/* There's also some garbage in the upper-left corner. Might be related to this 'wraparound'. */
/* Or maybe it's related to the 68k's alpha? It might come from the 68k side of the house. */
for (y = cliprect->min_y; y <= cliprect->max_y; ++y)
{
int x;
int src_addr = 256/2 * y;
const UINT16 *m68k_src = &m68k_buf[src_addr];
const UINT16 *i860_src = &i860_buf[src_addr];
UINT32 *dst = BITMAP_ADDR32(bitmap, y, cliprect->min_x);
for (x = cliprect->min_x; x <= cliprect->max_x; x += 2)
{
int i;
UINT16 m68k_pix = *m68k_src++;
UINT16 i860_pix = *i860_src++;
/* Draw two pixels */
for (i = 0; i < 2; ++i)
{
/* Vcombat's screen renders 'flopped' - very likely because VR headset displays may reflect off mirrors.
Shadfgtr isn't flopped, so it's not a constant feature of the hardware. */
/* Combine the two layers */
if ((m68k_pix & 0xff) == 0)
*dst++ = pens[i860_pix & 0xff];
else
*dst++ = pens[m68k_pix & 0xff];
m68k_pix >>= 8;
i860_pix >>= 8;
}
}
}
return 0;
}
static void skeetsht_scanline_update(running_device *screen, bitmap_t *bitmap, int scanline, const tms34010_display_params *params)
{
skeetsht_state *state = (skeetsht_state *)screen->machine->driver_data;
const rgb_t *const pens = tlc34076_get_pens();
UINT16 *vram = &state->tms_vram[(params->rowaddr << 8) & 0x3ff00];
UINT32 *dest = BITMAP_ADDR32(bitmap, scanline, 0);
int coladdr = params->coladdr;
int x;
for (x = params->heblnk; x < params->hsblnk; x += 2)
{
UINT16 pixels = vram[coladdr++ & 0xff];
dest[x + 0] = pens[pixels & 0xff];
dest[x + 1] = pens[pixels >> 8];
}
}
static void skeetsht_scanline_update(screen_device &screen, bitmap_rgb32 &bitmap, int scanline, const tms34010_display_params *params)
{
skeetsht_state *state = screen.machine().driver_data<skeetsht_state>();
const rgb_t *const pens = tlc34076_get_pens(screen.machine().device("tlc34076"));
UINT16 *vram = &state->m_tms_vram[(params->rowaddr << 8) & 0x3ff00];
UINT32 *dest = &bitmap.pix32(scanline);
int coladdr = params->coladdr;
int x;
for (x = params->heblnk; x < params->hsblnk; x += 2)
{
UINT16 pixels = vram[coladdr++ & 0xff];
dest[x + 0] = pens[pixels & 0xff];
dest[x + 1] = pens[pixels >> 8];
}
}
