Ejemplo n.º 1
0
        /*************************************
        *
        *  Main refresh
        *
        *************************************/
        uint32_t screen_update_atarisy2(screen_device screen, bitmap_ind16 bitmap, rectangle cliprect)
        {
            // start drawing
            m_mob.op0.draw_async(cliprect);

            // reset priorities
            bitmap_ind8 priority_bitmap = screen.priority();

            priority_bitmap.fill(0, cliprect);

            // draw the playfield
            m_playfield_tilemap.op0.tilemap.draw(screen, bitmap, cliprect, 0, 0);
            m_playfield_tilemap.op0.tilemap.draw(screen, bitmap, cliprect, 1, 1);
            m_playfield_tilemap.op0.tilemap.draw(screen, bitmap, cliprect, 2, 2);
            m_playfield_tilemap.op0.tilemap.draw(screen, bitmap, cliprect, 3, 3);

            // draw and merge the MO
            bitmap_ind16 mobitmap = m_mob.op0.bitmap();

            for (sparse_dirty_rect rect = m_mob.op0.first_dirty_rect(cliprect); rect != null; rect = rect.next())
            {
                for (int y = rect.m_rect.top(); y <= rect.m_rect.bottom(); y++)
                {
                    PointerU16 mo  = mobitmap.pix(y);        //uint16_t const *const mo = &mobitmap.pix(y);
                    PointerU16 pf  = bitmap.pix(y);          //uint16_t *const pf = &bitmap.pix(y);
                    PointerU8  pri = priority_bitmap.pix(y); //uint8_t const *const pri = &priority_bitmap.pix(y);
                    for (int x = rect.m_rect.left(); x <= rect.m_rect.right(); x++)
                    {
                        if (mo[x] != 0xffff)
                        {
                            int mopriority = mo[x] >> atari_motion_objects_device.PRIORITY_SHIFT;

                            // high priority PF?
                            if (((mopriority + pri[x]) & 2) != 0)
                            {
                                // only gets priority if PF pen is less than 8
                                if ((pf[x] & 0x08) == 0)
                                {
                                    pf[x] = (uint16_t)(mo[x] & atari_motion_objects_device.DATA_MASK);
                                }
                            }

                            // low priority
                            else
                            {
                                pf[x] = (uint16_t)(mo[x] & atari_motion_objects_device.DATA_MASK);
                            }
                        }
                    }
                }
            }

            // add the alpha on top
            m_alpha_tilemap.op0.tilemap.draw(screen, bitmap, cliprect, 0, 0);
            return(0);
        }
Ejemplo n.º 2
0
 //bitmap_ind8(uint8_t *base, int width, int height, int rowpixels) : bitmap8_t(k_bitmap_format, base, width, height, rowpixels) { }
 public bitmap_ind8(bitmap_ind8 source, rectangle subrect) : base(k_bitmap_format, source, subrect)
 {
 }