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Port from MESS, nw

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This commit is contained in:
Angelo Salese 2011-07-14 01:51:52 +00:00
parent 402df634c4
commit d2f6a81e11
2 changed files with 149 additions and 3 deletions
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2
src/mame/drivers/saturn.c
View File

@ -676,7 +676,7 @@ static WRITE32_HANDLER( saturn_scu_w )
case 0xa4/4:
if(LOG_SCU) logerror("PC=%08x IRQ status reg set:%08x %08x\n",cpu_get_pc(&space->device()),state->m_scu_regs[41],mem_mask);
state->m_scu.ist = state->m_scu_regs[offset];
state->m_scu.ist &= state->m_scu_regs[offset];
break;
case 0xa8/4: if(LOG_SCU) logerror("A-Bus IRQ ACK %08x\n",state->m_scu_regs[42]); break;
case 0xc4/4: if(LOG_SCU) logerror("SCU SDRAM set: %02x\n",state->m_scu_regs[49]); break;

150
src/mame/video/stvvdp2.c
View File

@ -2839,6 +2839,139 @@ static void stv_vdp2_drawgfx_rgb555( bitmap_t *dest_bmp, const rectangle *clip,
}
static void stv_vdp2_drawgfx_rgb888( bitmap_t *dest_bmp, const rectangle *clip, running_machine &machine, UINT32 code, int flipx, int flipy,
int sx, int sy, int transparency, int alpha)
{
saturn_state *state = machine.driver_data<saturn_state>();
rectangle myclip;
UINT8* gfxdata;
int t_pen;
int sprite_screen_width, sprite_screen_height;
gfxdata = state->m_vdp2.gfx_decode + code * 0x20;
sprite_screen_width = sprite_screen_height = 8;
/* KW 991012 -- Added code to force clip to bitmap boundary */
if(clip)
{
myclip.min_x = clip->min_x;
myclip.max_x = clip->max_x;
myclip.min_y = clip->min_y;
myclip.max_y = clip->max_y;
if (myclip.min_x < 0) myclip.min_x = 0;
if (myclip.max_x >= dest_bmp->width) myclip.max_x = dest_bmp->width-1;
if (myclip.min_y < 0) myclip.min_y = 0;
if (myclip.max_y >= dest_bmp->height) myclip.max_y = dest_bmp->height-1;
clip=&myclip;
}
{
int dx = stv2_current_tilemap.incx;
int dy = stv2_current_tilemap.incy;
int ex = sx+sprite_screen_width;
int ey = sy+sprite_screen_height;
int x_index_base;
int y_index;
if( flipx )
{
x_index_base = (sprite_screen_width-1)*dx;
dx = -dx;
}
else
{
x_index_base = 0;
}
if( flipy )
{
y_index = (sprite_screen_height-1)*dy;
dy = -dy;
}
else
{
y_index = 0;
}
if( clip )
{
if( sx < clip->min_x)
{ /* clip left */
int pixels = clip->min_x-sx;
sx += pixels;
x_index_base += pixels*dx;
}
if( sy < clip->min_y )
{ /* clip top */
int pixels = clip->min_y-sy;
sy += pixels;
y_index += pixels*dy;
}
/* NS 980211 - fixed incorrect clipping */
if( ex > clip->max_x+1 )
{ /* clip right */
int pixels = ex-clip->max_x-1;
ex -= pixels;
}
if( ey > clip->max_y+1 )
{ /* clip bottom */
int pixels = ey-clip->max_y-1;
ey -= pixels;
}
}
if( ex>sx )
{ /* skip if inner loop doesn't draw anything */
int y;
for( y=sy; y<ey; y++ )
{
const UINT8 *source = gfxdata + (y_index>>16)*32;
UINT16 *dest = BITMAP_ADDR16(dest_bmp, y, 0);
UINT32 data;
int x, x_index = x_index_base;
for( x=sx; x<ex; x++ )
{
int r,g,b;
data = (source[(x_index>>16)*4+0] << 24) | (source[(x_index>>16)*4+1] << 16) | (source[(x_index>>16)*4+2] << 8) | (source[(x_index>>16)*4+3] << 0);
t_pen = (data & 0x80000000) || ( transparency == STV_TRANSPARENCY_NONE );
if (t_pen)
{
b = (data & 0xff0000) >> 16;
g = (data & 0x00ff00) >> 8;
r = (data & 0x0000ff);
/* HACK: downscale because we don't yet do true color */
b >>= 3;
g >>= 3;
r >>= 3;
if(stv2_current_tilemap.fade_control & 1)
stv_vdp2_compute_color_offset_RGB555(machine,&r,&g,&b,stv2_current_tilemap.fade_control & 2);
if ( transparency == STV_TRANSPARENCY_ALPHA )
dest[x] = alpha_blend_r16( dest[x], b | g << 5 | r << 10, alpha );
else
dest[x] = b | g << 5 | r << 10;
}
x_index += dx;
}
y_index += dy;
}
}
}
}
static void stv_vdp2_draw_basic_bitmap(running_machine &machine, bitmap_t *bitmap, const rectangle *cliprect)
{
saturn_state *state = machine.driver_data<saturn_state>();
@ -3747,7 +3880,16 @@ static void stv_vdp2_draw_basic_tilemap(running_machine &machine, bitmap_t *bitm
olddrawypos = drawypos; drawypos >>= 16;
if (stv2_current_tilemap.tile_size==1)
{
if ( stv2_current_tilemap.colour_depth == 3 )
if ( stv2_current_tilemap.colour_depth == 4 )
{
/* normal */
stv_vdp2_drawgfx_rgb888(bitmap,cliprect,machine,tilecode+(0+(flipyx&1)+(flipyx&2))*4,flipyx&1,flipyx&2,drawxpos, drawypos,stv2_current_tilemap.transparency,stv2_current_tilemap.alpha);
stv_vdp2_drawgfx_rgb888(bitmap,cliprect,machine,tilecode+(1-(flipyx&1)+(flipyx&2))*4,flipyx&1,flipyx&2,drawxpos+8,drawypos,stv2_current_tilemap.transparency,stv2_current_tilemap.alpha);
stv_vdp2_drawgfx_rgb888(bitmap,cliprect,machine,tilecode+(2+(flipyx&1)-(flipyx&2))*4,flipyx&1,flipyx&2,drawxpos,drawypos+8,stv2_current_tilemap.transparency,stv2_current_tilemap.alpha);
stv_vdp2_drawgfx_rgb888(bitmap,cliprect,machine,tilecode+(3-(flipyx&1)-(flipyx&2))*4,flipyx&1,flipyx&2,drawxpos+8,drawypos+8,stv2_current_tilemap.transparency,stv2_current_tilemap.alpha);
}
else if ( stv2_current_tilemap.colour_depth == 3 )
{
/* normal */
stv_vdp2_drawgfx_rgb555(bitmap,cliprect,machine,tilecode+(0+(flipyx&1)+(flipyx&2))*4,flipyx&1,flipyx&2,drawxpos, drawypos,stv2_current_tilemap.transparency,stv2_current_tilemap.alpha);
@ -3777,7 +3919,11 @@ static void stv_vdp2_draw_basic_tilemap(running_machine &machine, bitmap_t *bitm
}
else
{
if ( stv2_current_tilemap.colour_depth == 3 )
if ( stv2_current_tilemap.colour_depth == 4)
{
stv_vdp2_drawgfx_rgb888(bitmap,cliprect,machine,tilecode,flipyx&1,flipyx&2,drawxpos,drawypos,stv2_current_tilemap.transparency,stv2_current_tilemap.alpha);
}
else if ( stv2_current_tilemap.colour_depth == 3)
{
stv_vdp2_drawgfx_rgb555(bitmap,cliprect,machine,tilecode,flipyx&1,flipyx&2,drawxpos,drawypos,stv2_current_tilemap.transparency,stv2_current_tilemap.alpha);
}