int cbasebal_vh_start(void)
{
int i;
cbasebal_textram = (unsigned char*)malloc(0x1000);
cbasebal_scrollram = (unsigned char*)malloc(0x1000);
bg_tilemap = tilemap_create(get_bg_tile_info,tilemap_scan_rows,TILEMAP_OPAQUE, 16,16,64,32);
fg_tilemap = tilemap_create(get_fg_tile_info,tilemap_scan_rows,TILEMAP_TRANSPARENT,8,8,64,32);
if (!cbasebal_textram || !cbasebal_scrollram || !bg_tilemap || !fg_tilemap)
{
cbasebal_vh_stop();
return 1;
}
fg_tilemap->transparent_pen = 3;
#define COLORTABLE_START(gfxn,color_code) Machine->drv->gfxdecodeinfo[gfxn].color_codes_start + \
color_code * Machine->gfx[gfxn]->color_granularity
#define GFX_COLOR_CODES(gfxn) Machine->gfx[gfxn]->total_colors
#define GFX_ELEM_COLORS(gfxn) Machine->gfx[gfxn]->color_granularity
palette_init_used_colors();
/* chars */
for (i = 0;i < GFX_COLOR_CODES(0);i++)
{
memset(&palette_used_colors[COLORTABLE_START(0,i)],
PALETTE_COLOR_USED,
GFX_ELEM_COLORS(0)-1);
}
/* bg tiles */
for (i = 0;i < GFX_COLOR_CODES(1);i++)
{
memset(&palette_used_colors[COLORTABLE_START(1,i)],
PALETTE_COLOR_USED,
GFX_ELEM_COLORS(1));
}
/* sprites */
for (i = 0;i < GFX_COLOR_CODES(2);i++)
{
memset(&palette_used_colors[COLORTABLE_START(2,i)],
PALETTE_COLOR_VISIBLE,
GFX_ELEM_COLORS(2)-1);
}
return 0;
}
/***************************************************************************
Start the video hardware emulation.
***************************************************************************/
int lwings_vh_start(void)
{
int i;
if (generic_vh_start() != 0)
return 1;
if ((dirtybuffer2 = (unsigned char *)gp2x_malloc(lwings_backgroundram_size)) == 0)
{
generic_vh_stop();
return 1;
}
fast_memset(dirtybuffer2,1,lwings_backgroundram_size);
if ((dirtybuffer4 = (unsigned char *)gp2x_malloc(lwings_backgroundram_size)) == 0)
{
generic_vh_stop();
return 1;
}
fast_memset(dirtybuffer4,1,lwings_backgroundram_size);
/* the background area is twice as tall as the screen */
if ((tmpbitmap2 = osd_new_bitmap(2*Machine->drv->screen_width,
2*Machine->drv->screen_height,Machine->scrbitmap->depth)) == 0)
{
gp2x_free(dirtybuffer2);
generic_vh_stop();
return 1;
}
#define COLORTABLE_START(gfxn,color_code) Machine->drv->gfxdecodeinfo[gfxn].color_codes_start + \
color_code * Machine->gfx[gfxn]->color_granularity
#define GFX_COLOR_CODES(gfxn) Machine->gfx[gfxn]->total_colors
#define GFX_ELEM_COLORS(gfxn) Machine->gfx[gfxn]->color_granularity
fast_memset(palette_used_colors,PALETTE_COLOR_UNUSED,Machine->drv->total_colors * sizeof(unsigned char));
/* chars */
for (i = 0;i < GFX_COLOR_CODES(0);i++)
{
fast_memset(&palette_used_colors[COLORTABLE_START(0,i)],
PALETTE_COLOR_USED,
GFX_ELEM_COLORS(0));
palette_used_colors[COLORTABLE_START(0,i) + GFX_ELEM_COLORS(0)-1] = PALETTE_COLOR_TRANSPARENT;
}
/* bg tiles */
for (i = 0;i < GFX_COLOR_CODES(1);i++)
{
fast_memset(&palette_used_colors[COLORTABLE_START(1,i)],
PALETTE_COLOR_USED,
GFX_ELEM_COLORS(1));
}
/* sprites */
for (i = 0;i < GFX_COLOR_CODES(2);i++)
{
fast_memset(&palette_used_colors[COLORTABLE_START(2,i)],
PALETTE_COLOR_USED,
GFX_ELEM_COLORS(2));
}
return 0;
}
