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draw_24bpp.c
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draw_24bpp.c
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/* Caprice32 - Amstrad CPC Emulator
(c) Copyright 1997-2004 Ulrich Doewich
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
void draw24bpp_border(void)
{
int colour;
register byte *mem_ptr;
colour = GateArray.palette[16];
mem_ptr = (byte *)(CPC.scr_base + CPC.scr_offs); // PC screen buffer address
*(dword *)mem_ptr = colour; // write one pixel of border colour
*(dword *)(mem_ptr+3) = colour;
*(dword *)(mem_ptr+6) = colour;
*(dword *)(mem_ptr+9) = colour;
*(dword *)(mem_ptr+12) = colour;
*(dword *)(mem_ptr+15) = colour;
*(dword *)(mem_ptr+18) = colour;
*(dword *)(mem_ptr+21) = colour;
*(dword *)(mem_ptr+24) = colour;
*(dword *)(mem_ptr+27) = colour;
*(dword *)(mem_ptr+30) = colour;
*(dword *)(mem_ptr+33) = colour;
*(dword *)(mem_ptr+36) = colour;
*(dword *)(mem_ptr+39) = colour;
*(dword *)(mem_ptr+42) = colour;
*(dword *)(mem_ptr+45) = colour;
CPC.scr_offs += 12; // update PC screen buffer address
}
void draw24bpp_mode0(dword addr)
{
byte idx;
register byte *mem_ptr;
dword val;
mem_ptr = (byte *)(CPC.scr_base + CPC.scr_offs); // PC screen buffer address
idx = *(pbRAM + addr); // grab first CPC screen memory byte
val = GateArray.palette[mode0_table[(idx*2)]];
*(dword *)mem_ptr = val; // write one pixels
*(dword *)(mem_ptr+3) = val;
*(dword *)(mem_ptr+6) = val;
*(dword *)(mem_ptr+9) = val;
val = GateArray.palette[mode0_table[(idx*2)+1]];
*(dword *)(mem_ptr+12) = val;
*(dword *)(mem_ptr+15) = val;
*(dword *)(mem_ptr+18) = val;
*(dword *)(mem_ptr+21) = val;
idx = *(pbRAM + ((addr+1)&0xffff)); // grab second CPC screen memory byte
val = GateArray.palette[mode0_table[(idx*2)]];
*(dword *)(mem_ptr+24) = val;
*(dword *)(mem_ptr+27) = val;
*(dword *)(mem_ptr+30) = val;
*(dword *)(mem_ptr+33) = val;
val = GateArray.palette[mode0_table[(idx*2)+1]];
*(dword *)(mem_ptr+36) = val;
*(dword *)(mem_ptr+39) = val;
*(dword *)(mem_ptr+42) = val;
*(dword *)(mem_ptr+45) = val;
CPC.scr_offs += 12; // update PC screen buffer address
}
void draw24bpp_mode1(dword addr)
{
byte idx;
register byte *mem_ptr;
dword val;
mem_ptr = (byte *)(CPC.scr_base + CPC.scr_offs); // PC screen buffer address
idx = *(pbRAM + addr); // grab first CPC screen memory byte
val = GateArray.palette[mode1_table[(idx*4)]];
*(dword *)mem_ptr = val; // write one pixels
*(dword *)(mem_ptr+3) = val;
val = GateArray.palette[mode1_table[(idx*4)+1]];
*(dword *)(mem_ptr+6) = val;
*(dword *)(mem_ptr+9) = val;
val = GateArray.palette[mode1_table[(idx*4)+2]];
*(dword *)(mem_ptr+12) = val;
*(dword *)(mem_ptr+15) = val;
val = GateArray.palette[mode1_table[(idx*4)+3]];
*(dword *)(mem_ptr+18) = val;
*(dword *)(mem_ptr+21) = val;
idx = *(pbRAM + ((addr+1)&0xffff)); // grab second CPC screen memory byte
val = GateArray.palette[mode1_table[(idx*4)]];
*(dword *)(mem_ptr+24) = val;
*(dword *)(mem_ptr+27) = val;
val = GateArray.palette[mode1_table[(idx*4)+1]];
*(dword *)(mem_ptr+30) = val;
*(dword *)(mem_ptr+33) = val;
val = GateArray.palette[mode1_table[(idx*4)+2]];
*(dword *)(mem_ptr+36) = val;
*(dword *)(mem_ptr+39) = val;
val = GateArray.palette[mode1_table[(idx*4)+3]];
*(dword *)(mem_ptr+42) = val;
*(dword *)(mem_ptr+45) = val;
CPC.scr_offs += 12; // update PC screen buffer address
}
void draw24bpp_mode2(dword addr)
{
byte pat;
register byte *mem_ptr;
dword pen_on, pen_off;
mem_ptr = (byte *)(CPC.scr_base + CPC.scr_offs); // PC screen buffer address
pen_on = GateArray.palette[1];
pen_off = GateArray.palette[0];
pat = *(pbRAM + addr); // grab first CPC screen memory byte
*(dword *)mem_ptr = (pat & 0x80) ? pen_on : pen_off;
*(dword *)(mem_ptr+3) = (pat & 0x40) ? pen_on : pen_off;
*(dword *)(mem_ptr+6) = (pat & 0x20) ? pen_on : pen_off;
*(dword *)(mem_ptr+9) = (pat & 0x10) ? pen_on : pen_off;
*(dword *)(mem_ptr+12) = (pat & 0x08) ? pen_on : pen_off;
*(dword *)(mem_ptr+15) = (pat & 0x04) ? pen_on : pen_off;
*(dword *)(mem_ptr+18) = (pat & 0x02) ? pen_on : pen_off;
*(dword *)(mem_ptr+21) = (pat & 0x01) ? pen_on : pen_off;
pat = *(pbRAM + ((addr+1)&0xffff)); // grab second CPC screen memory byte
*(dword *)(mem_ptr+24) = (pat & 0x80) ? pen_on : pen_off;
*(dword *)(mem_ptr+27) = (pat & 0x40) ? pen_on : pen_off;
*(dword *)(mem_ptr+30) = (pat & 0x20) ? pen_on : pen_off;
*(dword *)(mem_ptr+33) = (pat & 0x10) ? pen_on : pen_off;
*(dword *)(mem_ptr+36) = (pat & 0x08) ? pen_on : pen_off;
*(dword *)(mem_ptr+39) = (pat & 0x04) ? pen_on : pen_off;
*(dword *)(mem_ptr+42) = (pat & 0x02) ? pen_on : pen_off;
*(dword *)(mem_ptr+45) = (pat & 0x01) ? pen_on : pen_off;
CPC.scr_offs += 12; // update PC screen buffer address
}
void draw24bpp_border_double(void)
{
int colour;
register byte *mem_ptr;
register dword next_line;
colour = GateArray.palette[16];
mem_ptr = (byte *)(CPC.scr_base + CPC.scr_offs); // PC screen buffer address
next_line = CPC.scr_bps << 2;
*(dword *)mem_ptr =
*(dword *)(mem_ptr+next_line) = colour; // write one pixel of border colour
*(dword *)(mem_ptr+3) =
*(dword *)(mem_ptr+next_line+3) = colour;
*(dword *)(mem_ptr+6) =
*(dword *)(mem_ptr+next_line+6) = colour;
*(dword *)(mem_ptr+9) =
*(dword *)(mem_ptr+next_line+9) = colour;
*(dword *)(mem_ptr+12) =
*(dword *)(mem_ptr+next_line+12) = colour;
*(dword *)(mem_ptr+15) =
*(dword *)(mem_ptr+next_line+15) = colour;
*(dword *)(mem_ptr+18) =
*(dword *)(mem_ptr+next_line+18) = colour;
*(dword *)(mem_ptr+21) =
*(dword *)(mem_ptr+next_line+21) = colour;
*(dword *)(mem_ptr+24) =
*(dword *)(mem_ptr+next_line+24) = colour;
*(dword *)(mem_ptr+27) =
*(dword *)(mem_ptr+next_line+27) = colour;
*(dword *)(mem_ptr+30) =
*(dword *)(mem_ptr+next_line+30) = colour;
*(dword *)(mem_ptr+33) =
*(dword *)(mem_ptr+next_line+33) = colour;
*(dword *)(mem_ptr+36) =
*(dword *)(mem_ptr+next_line+36) = colour;
*(dword *)(mem_ptr+39) =
*(dword *)(mem_ptr+next_line+39) = colour;
*(dword *)(mem_ptr+42) =
*(dword *)(mem_ptr+next_line+42) = colour;
*(dword *)(mem_ptr+45) =
*(dword *)(mem_ptr+next_line+45) = colour;
CPC.scr_offs += 12; // update PC screen buffer address
}
void draw24bpp_mode0_double(dword addr)
{
byte idx;
register byte *mem_ptr;
register dword next_line;
dword val;
mem_ptr = (byte *)(CPC.scr_base + CPC.scr_offs); // PC screen buffer address
next_line = CPC.scr_bps << 2;
idx = *(pbRAM + addr); // grab first CPC screen memory byte
val = GateArray.palette[mode0_table[(idx*2)]];
*(dword *)mem_ptr =
*(dword *)(mem_ptr+next_line) = val; // write one pixels
*(dword *)(mem_ptr+3) =
*(dword *)(mem_ptr+next_line+3) = val;
*(dword *)(mem_ptr+6) =
*(dword *)(mem_ptr+next_line+6) = val;
*(dword *)(mem_ptr+9) =
*(dword *)(mem_ptr+next_line+9) = val;
val = GateArray.palette[mode0_table[(idx*2)+1]];
*(dword *)(mem_ptr+12) =
*(dword *)(mem_ptr+next_line+12) = val;
*(dword *)(mem_ptr+15) =
*(dword *)(mem_ptr+next_line+15) = val;
*(dword *)(mem_ptr+18) =
*(dword *)(mem_ptr+next_line+18) = val;
*(dword *)(mem_ptr+21) =
*(dword *)(mem_ptr+next_line+21) = val;
idx = *(pbRAM + ((addr+1)&0xffff)); // grab second CPC screen memory byte
val = GateArray.palette[mode0_table[(idx*2)]];
*(dword *)(mem_ptr+24) =
*(dword *)(mem_ptr+next_line+24) = val;
*(dword *)(mem_ptr+27) =
*(dword *)(mem_ptr+next_line+27) = val;
*(dword *)(mem_ptr+30) =
*(dword *)(mem_ptr+next_line+30) = val;
*(dword *)(mem_ptr+33) =
*(dword *)(mem_ptr+next_line+33) = val;
val = GateArray.palette[mode0_table[(idx*2)+1]];
*(dword *)(mem_ptr+36) =
*(dword *)(mem_ptr+next_line+36) = val;
*(dword *)(mem_ptr+39) =
*(dword *)(mem_ptr+next_line+39) = val;
*(dword *)(mem_ptr+42) =
*(dword *)(mem_ptr+next_line+42) = val;
*(dword *)(mem_ptr+45) =
*(dword *)(mem_ptr+next_line+45) = val;
CPC.scr_offs += 12; // update PC screen buffer address
}
void draw24bpp_mode1_double(dword addr)
{
byte idx;
register byte *mem_ptr;
register dword next_line;
dword val;
mem_ptr = (byte *)(CPC.scr_base + CPC.scr_offs); // PC screen buffer address
next_line = CPC.scr_bps << 2;
idx = *(pbRAM + addr); // grab first CPC screen memory byte
val = GateArray.palette[mode1_table[(idx*4)]];
*(dword *)mem_ptr =
*(dword *)(mem_ptr+next_line) = val; // write one pixels
*(dword *)(mem_ptr+3) =
*(dword *)(mem_ptr+next_line+3) = val;
val = GateArray.palette[mode1_table[(idx*4)+1]];
*(dword *)(mem_ptr+6) =
*(dword *)(mem_ptr+next_line+6) = val;
*(dword *)(mem_ptr+9) =
*(dword *)(mem_ptr+next_line+9) = val;
val = GateArray.palette[mode1_table[(idx*4)+2]];
*(dword *)(mem_ptr+12) =
*(dword *)(mem_ptr+next_line+12) = val;
*(dword *)(mem_ptr+15) =
*(dword *)(mem_ptr+next_line+15) = val;
val = GateArray.palette[mode1_table[(idx*4)+3]];
*(dword *)(mem_ptr+18) =
*(dword *)(mem_ptr+next_line+18) = val;
*(dword *)(mem_ptr+21) =
*(dword *)(mem_ptr+next_line+21) = val;
idx = *(pbRAM + ((addr+1)&0xffff)); // grab second CPC screen memory byte
val = GateArray.palette[mode1_table[(idx*4)]];
*(dword *)(mem_ptr+24) =
*(dword *)(mem_ptr+next_line+24) = val;
*(dword *)(mem_ptr+27) =
*(dword *)(mem_ptr+next_line+27) = val;
val = GateArray.palette[mode1_table[(idx*4)+1]];
*(dword *)(mem_ptr+30) =
*(dword *)(mem_ptr+next_line+30) = val;
*(dword *)(mem_ptr+33) =
*(dword *)(mem_ptr+next_line+33) = val;
val = GateArray.palette[mode1_table[(idx*4)+2]];
*(dword *)(mem_ptr+36) =
*(dword *)(mem_ptr+next_line+36) = val;
*(dword *)(mem_ptr+39) =
*(dword *)(mem_ptr+next_line+39) = val;
val = GateArray.palette[mode1_table[(idx*4)+3]];
*(dword *)(mem_ptr+42) =
*(dword *)(mem_ptr+next_line+42) = val;
*(dword *)(mem_ptr+45) =
*(dword *)(mem_ptr+next_line+45) = val;
CPC.scr_offs += 12; // update PC screen buffer address
}
void draw24bpp_mode2_double(dword addr)
{
byte pat;
register byte *mem_ptr;
register dword next_line;
dword pen_on, pen_off;
mem_ptr = (byte *)(CPC.scr_base + CPC.scr_offs); // PC screen buffer address
next_line = CPC.scr_bps << 2;
pen_on = GateArray.palette[1];
pen_off = GateArray.palette[0];
pat = *(pbRAM + addr); // grab first CPC screen memory byte
*(dword *)mem_ptr =
*(dword *)(mem_ptr+next_line) = (pat & 0x80) ? pen_on : pen_off;
*(dword *)(mem_ptr+3) =
*(dword *)(mem_ptr+next_line+3) = (pat & 0x40) ? pen_on : pen_off;
*(dword *)(mem_ptr+6) =
*(dword *)(mem_ptr+next_line+6) = (pat & 0x20) ? pen_on : pen_off;
*(dword *)(mem_ptr+9) =
*(dword *)(mem_ptr+next_line+9) = (pat & 0x10) ? pen_on : pen_off;
*(dword *)(mem_ptr+12) =
*(dword *)(mem_ptr+next_line+12) = (pat & 0x08) ? pen_on : pen_off;
*(dword *)(mem_ptr+15) =
*(dword *)(mem_ptr+next_line+15) = (pat & 0x04) ? pen_on : pen_off;
*(dword *)(mem_ptr+18) =
*(dword *)(mem_ptr+next_line+18) = (pat & 0x02) ? pen_on : pen_off;
*(dword *)(mem_ptr+21) =
*(dword *)(mem_ptr+next_line+21) = (pat & 0x01) ? pen_on : pen_off;
pat = *(pbRAM + ((addr+1)&0xffff)); // grab second CPC screen memory byte
*(dword *)(mem_ptr+24) =
*(dword *)(mem_ptr+next_line+24) = (pat & 0x80) ? pen_on : pen_off;
*(dword *)(mem_ptr+27) =
*(dword *)(mem_ptr+next_line+27) = (pat & 0x40) ? pen_on : pen_off;
*(dword *)(mem_ptr+30) =
*(dword *)(mem_ptr+next_line+30) = (pat & 0x20) ? pen_on : pen_off;
*(dword *)(mem_ptr+33) =
*(dword *)(mem_ptr+next_line+33) = (pat & 0x10) ? pen_on : pen_off;
*(dword *)(mem_ptr+36) =
*(dword *)(mem_ptr+next_line+36) = (pat & 0x08) ? pen_on : pen_off;
*(dword *)(mem_ptr+39) =
*(dword *)(mem_ptr+next_line+39) = (pat & 0x04) ? pen_on : pen_off;
*(dword *)(mem_ptr+42) =
*(dword *)(mem_ptr+next_line+42) = (pat & 0x02) ? pen_on : pen_off;
*(dword *)(mem_ptr+45) =
*(dword *)(mem_ptr+next_line+45) = (pat & 0x01) ? pen_on : pen_off;
CPC.scr_offs += 12; // update PC screen buffer address
}
void draw24bpp_border_half(void)
{
int colour;
register byte *mem_ptr;
colour = GateArray.palette[16];
mem_ptr = (byte *)(CPC.scr_base + CPC.scr_offs); // PC screen buffer address
*(dword *)mem_ptr = colour; // write one pixel of border colour
*(dword *)(mem_ptr+3) = colour;
*(dword *)(mem_ptr+6) = colour;
*(dword *)(mem_ptr+9) = colour;
*(dword *)(mem_ptr+12) = colour;
*(dword *)(mem_ptr+15) = colour;
*(dword *)(mem_ptr+18) = colour;
*(dword *)(mem_ptr+21) = colour;
CPC.scr_offs += 6; // update PC screen buffer address
}
void draw24bpp_mode0_half(dword addr)
{
byte idx;
register byte *mem_ptr;
dword val;
mem_ptr = (byte *)(CPC.scr_base + CPC.scr_offs); // PC screen buffer address
idx = *(pbRAM + addr); // grab first CPC screen memory byte
val = GateArray.palette[mode0_table[(idx*2)]];
*(dword *)mem_ptr = val; // write one pixels
*(dword *)(mem_ptr+3) = val;
val = GateArray.palette[mode0_table[(idx*2)+1]];
*(dword *)(mem_ptr+6) = val;
*(dword *)(mem_ptr+9) = val;
idx = *(pbRAM + ((addr+1)&0xffff)); // grab second CPC screen memory byte
val = GateArray.palette[mode0_table[(idx*2)]];
*(dword *)(mem_ptr+12) = val;
*(dword *)(mem_ptr+15) = val;
val = GateArray.palette[mode0_table[(idx*2)+1]];
*(dword *)(mem_ptr+18) = val;
*(dword *)(mem_ptr+21) = val;
CPC.scr_offs += 6; // update PC screen buffer address
}
void draw24bpp_mode1_half(dword addr)
{
byte idx;
register byte *mem_ptr;
dword val;
mem_ptr = (byte *)(CPC.scr_base + CPC.scr_offs); // PC screen buffer address
idx = *(pbRAM + addr); // grab first CPC screen memory byte
val = GateArray.palette[mode1_table[(idx*4)]];
*(dword *)mem_ptr = val; // write one pixels
val = GateArray.palette[mode1_table[(idx*4)+1]];
*(dword *)(mem_ptr+3) = val;
val = GateArray.palette[mode1_table[(idx*4)+2]];
*(dword *)(mem_ptr+6) = val;
val = GateArray.palette[mode1_table[(idx*4)+3]];
*(dword *)(mem_ptr+9) = val;
idx = *(pbRAM + ((addr+1)&0xffff)); // grab second CPC screen memory byte
val = GateArray.palette[mode1_table[(idx*4)]];
*(dword *)(mem_ptr+12) = val;
val = GateArray.palette[mode1_table[(idx*4)+1]];
*(dword *)(mem_ptr+15) = val;
val = GateArray.palette[mode1_table[(idx*4)+2]];
*(dword *)(mem_ptr+18) = val;
val = GateArray.palette[mode1_table[(idx*4)+3]];
*(dword *)(mem_ptr+21) = val;
CPC.scr_offs += 6; // update PC screen buffer address
}
void draw24bpp_mode2_half(dword addr)
{
byte pat;
register byte *mem_ptr;
dword pen_on, pen_off;
mem_ptr = (byte *)(CPC.scr_base + CPC.scr_offs); // PC screen buffer address
pen_on = GateArray.palette[1];
pen_off = GateArray.palette[0];
pat = *(pbRAM + addr); // grab first CPC screen memory byte
*(dword *)mem_ptr = (pat & 0x80) ? pen_on : pen_off;
*(dword *)(mem_ptr+3) = (pat & 0x20) ? pen_on : pen_off;
*(dword *)(mem_ptr+6) = (pat & 0x08) ? pen_on : pen_off;
*(dword *)(mem_ptr+9) = (pat & 0x02) ? pen_on : pen_off;
pat = *(pbRAM + ((addr+1)&0xffff)); // grab second CPC screen memory byte
*(dword *)(mem_ptr+12) = (pat & 0x80) ? pen_on : pen_off;
*(dword *)(mem_ptr+15) = (pat & 0x20) ? pen_on : pen_off;
*(dword *)(mem_ptr+18) = (pat & 0x08) ? pen_on : pen_off;
*(dword *)(mem_ptr+21) = (pat & 0x02) ? pen_on : pen_off;
CPC.scr_offs += 6; // update PC screen buffer address
}