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Add VGA copy and fill row functions

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@1704
This commit is contained in:
Sjoerd van der Berg 2004-03-06 23:18:50 +00:00
parent f86f45110c
commit 0064c46add
1 changed files with 35 additions and 8 deletions
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43
src/ints/int10_char.cpp
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@ -16,7 +16,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/* $Id: int10_char.cpp,v 1.23 2004-02-29 22:18:24 harekiet Exp $ */
/* $Id: int10_char.cpp,v 1.24 2004-03-06 23:18:50 harekiet Exp $ */
/* Character displaying moving functions */
@ -68,8 +68,8 @@ static INLINE void TANDY16_CopyRow(Bit8u cleft,Bit8u cright,Bit8u rold,Bit8u rne
static INLINE void EGA16_CopyRow(Bit8u cleft,Bit8u cright,Bit8u rold,Bit8u rnew,PhysPt base) {
PhysPt src,dest;Bitu copy;
Bit8u cheight = real_readb(BIOSMEM_SEG,BIOSMEM_CHAR_HEIGHT);
dest=base+(CurMode->twidth*rnew)*cheight+cleft;
src=base+(CurMode->twidth*rold)*cheight+cleft;
dest=base+(CurMode->twidth*rnew)*cheight+cleft;
src=base+(CurMode->twidth*rold)*cheight+cleft;
Bitu nextline=CurMode->twidth;
/* Setup registers correctly */
IO_Write(0x3ce,5);IO_Write(0x3cf,1); /* Memory transfer mode */
@ -85,6 +85,19 @@ static INLINE void EGA16_CopyRow(Bit8u cleft,Bit8u cright,Bit8u rold,Bit8u rnew,
IO_Write(0x3ce,5);IO_Write(0x3cf,0); /* Normal transfer mode */
}
static INLINE void VGA_CopyRow(Bit8u cleft,Bit8u cright,Bit8u rold,Bit8u rnew,PhysPt base) {
PhysPt src,dest;Bitu copy;
Bit8u cheight = real_readb(BIOSMEM_SEG,BIOSMEM_CHAR_HEIGHT);
dest=base+8*((CurMode->twidth*rnew)*cheight+cleft);
src=base+8*((CurMode->twidth*rold)*cheight+cleft);
Bitu nextline=8*CurMode->twidth;
Bitu rowsize=8*(cright-cleft);
copy=cheight;
for (;copy>0;copy--) {
for (Bitu x=0;x<rowsize;x++) mem_writeb(dest+x,mem_readb(src+x));
dest+=nextline;src+=nextline;
}
}
static INLINE void TEXT_CopyRow(Bit8u cleft,Bit8u cright,Bit8u rold,Bit8u rnew,PhysPt base) {
PhysPt src,dest;
@ -139,24 +152,34 @@ static INLINE void TANDY16_FillRow(Bit8u cleft,Bit8u cright,Bit8u row,PhysPt bas
}
}
static INLINE void EGA16_FillRow(Bit8u cleft,Bit8u cright,Bit8u row,PhysPt base,Bit8u attr) {
/* Set Bitmask / Color / Full Set Reset */
IO_Write(0x3ce,0x8);IO_Write(0x3cf,0xff);
IO_Write(0x3ce,0x0);IO_Write(0x3cf,attr);
IO_Write(0x3ce,0x1);IO_Write(0x3cf,0xf);
/* Write some bytes */
PhysPt dest;
Bit8u cheight = real_readb(BIOSMEM_SEG,BIOSMEM_CHAR_HEIGHT);
dest=base+(CurMode->twidth*row)*cheight+cleft;
PhysPt dest=base+(CurMode->twidth*row)*cheight+cleft;
Bitu nextline=CurMode->twidth;
Bitu copy = cheight; Bitu rowsize=(cright-cleft);
Bitu copy = cheight;Bitu rowsize=(cright-cleft);
for (;copy>0;copy--) {
for (Bitu x=0;x<rowsize;x++) mem_writeb(dest+x,0xff);
dest+=nextline;
}
IO_Write(0x3cf,0);
}
static INLINE void VGA_FillRow(Bit8u cleft,Bit8u cright,Bit8u row,PhysPt base,Bit8u attr) {
/* Write some bytes */
Bit8u cheight = real_readb(BIOSMEM_SEG,BIOSMEM_CHAR_HEIGHT);
PhysPt dest=base+8*((CurMode->twidth*row)*cheight+cleft);
Bitu nextline=8*CurMode->twidth;
Bitu copy = cheight;Bitu rowsize=8*(cright-cleft);
for (;copy>0;copy--) {
for (Bitu x=0;x<rowsize;x++) mem_writeb(dest+x,attr);
dest+=nextline;
}
IO_Write(0x3cf,0);
}
@ -214,6 +237,8 @@ void INT10_ScrollWindow(Bit8u rul,Bit8u cul,Bit8u rlr,Bit8u clr,Bit8s nlines,Bit
TANDY16_CopyRow(cul,clr,start,start+nlines,base);break;
case M_EGA16:
EGA16_CopyRow(cul,clr,start,start+nlines,base);break;
case M_VGA:
VGA_CopyRow(cul,clr,start,start+nlines,base);break;
default:
LOG(LOG_INT10,LOG_ERROR)("Unhandled mode %d for scroll",CurMode->type);
}
@ -238,6 +263,8 @@ filling:
TANDY16_FillRow(cul,clr,start,base,attr);break;
case M_EGA16:
EGA16_FillRow(cul,clr,start,base,attr);break;
case M_VGA:
VGA_FillRow(cul,clr,start,base,attr);break;
default:
LOG(LOG_INT10,LOG_ERROR)("Unhandled mode %d for scroll",CurMode->type);
}