diff options
author | 2013-03-04 01:21:53 +0000 | |
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committer | 2013-03-04 01:21:53 +0000 | |
commit | d2f31bdcbf68c24a0a111bc643f4294dc4052505 (patch) | |
tree | a22182e560c64c0e0edf4044565e46bb10e9e7ca /src/emu/video/stvvdp1.c | |
parent | 6a2f6c84f6b122b88b150bca6ce8da3db9c89738 (diff) |
Work-around for VDP1 framebuffer clear, fixes Daisenryaku Strong Style regression
Diffstat (limited to 'src/emu/video/stvvdp1.c')
-rw-r--r-- | src/emu/video/stvvdp1.c | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/src/emu/video/stvvdp1.c b/src/emu/video/stvvdp1.c index 2a427c4c074..ccb6957447f 100644 --- a/src/emu/video/stvvdp1.c +++ b/src/emu/video/stvvdp1.c @@ -180,19 +180,30 @@ READ16_MEMBER( saturn_state::saturn_vdp1_regs_r ) return m_vdp1_regs[offset]; //TODO: write-only regs should return open bus or zero } +/* TODO: TVM & 1 is just a kludgy work-around, the VDP1 actually needs to be rewritten from scratch. */ +/* Daisenryaku Strong Style (daisenss) uses it */ void saturn_state::stv_clear_framebuffer( int which_framebuffer ) { int start_x, end_x, start_y, end_y; - start_x = STV_VDP1_EWLR_X1 * 8; + start_x = STV_VDP1_EWLR_X1 * ((STV_VDP1_TVM & 1) ? 16 : 8); start_y = STV_VDP1_EWLR_Y1 * (m_vdp1.framebuffer_double_interlace+1); - end_x = STV_VDP1_EWRR_X3 * 8; + end_x = STV_VDP1_EWRR_X3 * ((STV_VDP1_TVM & 1) ? 16 : 8); end_y = (STV_VDP1_EWRR_Y3+1) * (m_vdp1.framebuffer_double_interlace+1); -// 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); +// 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); - for(int y=start_y;y<end_y;y++) - for(int x=start_x;x<end_x;x++) - m_vdp1.framebuffer[ which_framebuffer ][(x+y*512)] = m_vdp1.ewdr; + if(STV_VDP1_TVM & 1) + { + for(int y=start_y;y<end_y;y++) + for(int x=start_x;x<end_x;x++) + m_vdp1.framebuffer[ which_framebuffer ][(x+y*1024)] = m_vdp1.ewdr; + } + else + { + for(int y=start_y;y<end_y;y++) + for(int x=start_x;x<end_x;x++) + m_vdp1.framebuffer[ which_framebuffer ][(x+y*512)] = m_vdp1.ewdr; + } if ( VDP1_LOG ) logerror( "Clearing %d framebuffer\n", m_vdp1.framebuffer_current_draw ); // memset( m_vdp1.framebuffer[ which_framebuffer ], m_vdp1.ewdr, 1024 * 256 * sizeof(UINT16) * 2 ); |