trunk/src/emu/video/stvvdp1.c
| r21552 | r21553 | |
|---|
| 180 | 180 | return m_vdp1_regs[offset]; //TODO: write-only regs should return open bus or zero |
| 181 | 181 | } |
| 182 | 182 | |
| 183 | /* TODO: TVM & 1 is just a kludgy work-around, the VDP1 actually needs to be rewritten from scratch. */ |
| 184 | /* Daisenryaku Strong Style (daisenss) uses it */ |
| 183 | 185 | void saturn_state::stv_clear_framebuffer( int which_framebuffer ) |
| 184 | 186 | { |
| 185 | 187 | int start_x, end_x, start_y, end_y; |
| 186 | 188 | |
| 187 | | start_x = STV_VDP1_EWLR_X1 * 8; |
| 189 | start_x = STV_VDP1_EWLR_X1 * ((STV_VDP1_TVM & 1) ? 16 : 8); |
| 188 | 190 | start_y = STV_VDP1_EWLR_Y1 * (m_vdp1.framebuffer_double_interlace+1); |
| 189 | | end_x = STV_VDP1_EWRR_X3 * 8; |
| 191 | end_x = STV_VDP1_EWRR_X3 * ((STV_VDP1_TVM & 1) ? 16 : 8); |
| 190 | 192 | end_y = (STV_VDP1_EWRR_Y3+1) * (m_vdp1.framebuffer_double_interlace+1); |
| 191 | | // popmessage("%d %d %d %d",STV_VDP1_EWLR_X1,STV_VDP1_EWLR_Y1,STV_VDP1_EWRR_X3,STV_VDP1_EWRR_Y3,m_vdp1.framebuffer_double_interlace); |
| 193 | // popmessage("%d %d %d %d %d",STV_VDP1_EWLR_X1,STV_VDP1_EWLR_Y1,STV_VDP1_EWRR_X3,STV_VDP1_EWRR_Y3,m_vdp1.framebuffer_double_interlace); |
| 192 | 194 | |
| 193 | | for(int y=start_y;y<end_y;y++) |
| 194 | | for(int x=start_x;x<end_x;x++) |
| 195 | | m_vdp1.framebuffer[ which_framebuffer ][(x+y*512)] = m_vdp1.ewdr; |
| 195 | if(STV_VDP1_TVM & 1) |
| 196 | { |
| 197 | for(int y=start_y;y<end_y;y++) |
| 198 | for(int x=start_x;x<end_x;x++) |
| 199 | m_vdp1.framebuffer[ which_framebuffer ][(x+y*1024)] = m_vdp1.ewdr; |
| 200 | } |
| 201 | else |
| 202 | { |
| 203 | for(int y=start_y;y<end_y;y++) |
| 204 | for(int x=start_x;x<end_x;x++) |
| 205 | m_vdp1.framebuffer[ which_framebuffer ][(x+y*512)] = m_vdp1.ewdr; |
| 206 | } |
| 196 | 207 | |
| 197 | 208 | if ( VDP1_LOG ) logerror( "Clearing %d framebuffer\n", m_vdp1.framebuffer_current_draw ); |
| 198 | 209 | // memset( m_vdp1.framebuffer[ which_framebuffer ], m_vdp1.ewdr, 1024 * 256 * sizeof(UINT16) * 2 ); |