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+ implemented VESA banked 32k/64k colour mode fast line drawing in the go32v2 graph unit
git-svn-id: trunk@30246 -
This commit is contained in:
nickysn
parent
b617345e43
commit
69d839e891
@ -3550,6 +3550,7 @@ const CrtAddress: word = 0;
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mode.GetRGBPalette := {$ifdef fpc}@{$endif}GetVESARGBPalette;
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mode.SetVisualPage := {$ifdef fpc}@{$endif}SetVisualVESA;
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mode.SetActivePage := {$ifdef fpc}@{$endif}SetActiveVESA;
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mode.HLine := {$ifdef fpc}@{$endif}HLineVESA32kOr64k;
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end;
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procedure FillCommonVESA32k(var mode: TModeInfo);
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@ -1377,6 +1377,323 @@ end;
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End;
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end;
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procedure HLineVESA32kOr64k(x,x2,y: smallint); {$ifndef fpc}far;{$endif fpc}
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var Offs: Longint;
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mask, l, bankrest: longint;
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curbank, hlength: smallint;
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Begin
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{ must we swap the values? }
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if x > x2 then
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Begin
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x := x xor x2;
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x2 := x xor x2;
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x:= x xor x2;
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end;
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{ First convert to global coordinates }
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X := X + StartXViewPort;
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X2 := X2 + StartXViewPort;
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Y := Y + StartYViewPort;
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if ClipPixels then
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Begin
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if LineClipped(x,y,x2,y,StartXViewPort,StartYViewPort,
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StartXViewPort+ViewWidth, StartYViewPort+ViewHeight) then
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exit;
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end;
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{$ifdef logging2}
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LogLn('hline '+strf(x)+' - '+strf(x2)+' on '+strf(y)+' in mode '+strf(currentwritemode));
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{$endif logging2}
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HLength := x2 - x + 1;
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{$ifdef logging2}
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LogLn('length: '+strf(hlength));
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{$endif logging2}
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if HLength>0 then
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begin
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Offs:=(Longint(y)+YOffset)*bytesperline+2*x;
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{$ifdef logging2}
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LogLn('Offs: '+strf(offs)+' -- '+hexstr(offs,8));
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{$endif logging2}
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Mask := longint(word(CurrentColor)+word(CurrentColor) shl 16);
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Case CurrentWriteMode of
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AndPut:
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Begin
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Repeat
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curbank := smallint(offs shr 16);
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SetWriteBank(curbank);
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SetReadBank(curbank);
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{$ifdef logging2}
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LogLn('set bank '+strf(curbank)+' for offset '+hexstr(offs,8));
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{$endif logging2}
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If ((HLength >= 2) and
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((offs and 3) = 0)) or
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(HLength >= 3) Then
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{ align target }
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Begin
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If (offs and 3) <> 0 then
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{ this cannot go past a window boundary because the }
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{ size of a window is always a multiple of 4 }
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Begin
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{$ifdef logging2}
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LogLn('Aligning by drawing 1 pixel');
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{$endif logging2}
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MemW[WinWriteSeg:word(offs)] :=
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MemW[WinReadSeg:word(offs)] And Word(CurrentColor);
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Dec(HLength);
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inc(offs, 2);
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End;
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{$ifdef logging2}
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LogLn('Offset is now '+hexstr(offs,8)+', length left: '+strf(hlength));
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{$endif logging}
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{ offs is now 4-bytes aligned }
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If HLength <= (($10000-(Offs and $ffff)) shr 1) Then
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bankrest := HLength
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else {the rest won't fit anymore in the current window }
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bankrest := ($10000 - (Offs and $ffff)) shr 1;
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{ it is possible that by aligningm we ended up in a new }
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{ bank, so set the correct bank again to make sure }
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setwritebank(offs shr 16);
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setreadbank(offs shr 16);
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{$ifdef logging2}
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LogLn('Rest to be drawn in this window: '+strf(bankrest));
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{$endif logging}
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For l := 0 to (Bankrest div 2)-1 Do
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MemL[WinWriteSeg:word(offs)+l*4] :=
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MemL[WinReadSeg:word(offs)+l*4] And Mask;
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inc(offs,l*4+4);
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dec(hlength,l*2+2);
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{$ifdef logging2}
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LogLn('Offset is now '+hexstr(offs,8)+', length left: '+strf(hlength));
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{$endif logging}
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End
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Else
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Begin
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{$ifdef logging2}
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LogLn('Drawing leftover: '+strf(HLength)+' at offset '+hexstr(offs,8));
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{$endif logging}
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if HLength > 0 then
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begin
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{ this may cross a bank at any time, so adjust }
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{ because this loop always runs for very little pixels, }
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{ there's little gained by splitting it up }
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setreadbank(offs shr 16);
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setwritebank(offs shr 16);
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MemW[WinWriteSeg:word(offs)] :=
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MemW[WinReadSeg:word(offs)] And Word(currentColor);
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HLength := 0
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end;
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End
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Until HLength = 0;
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End;
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XorPut:
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Begin
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Repeat
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curbank := smallint(offs shr 16);
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SetWriteBank(curbank);
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SetReadBank(curbank);
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{$ifdef logging2}
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LogLn('set bank '+strf(curbank)+' for offset '+hexstr(offs,8));
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{$endif logging2}
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If ((HLength >= 2) and
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((offs and 3) = 0)) or
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(HLength >= 3) Then
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{ align target }
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Begin
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If (offs and 3) <> 0 then
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{ this cannot go past a window boundary because the }
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{ size of a window is always a multiple of 4 }
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Begin
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{$ifdef logging2}
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LogLn('Aligning by drawing 1 pixel');
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{$endif logging2}
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MemW[WinWriteSeg:word(offs)] :=
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MemW[WinReadSeg:word(offs)] Xor Word(CurrentColor);
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Dec(HLength);
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inc(offs, 2);
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End;
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{$ifdef logging2}
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LogLn('Offset is now '+hexstr(offs,8)+', length left: '+strf(hlength));
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{$endif logging}
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{ offs is now 4-bytes aligned }
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If HLength <= (($10000-(Offs and $ffff)) shr 1) Then
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bankrest := HLength
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else {the rest won't fit anymore in the current window }
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bankrest := ($10000 - (Offs and $ffff)) shr 1;
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{ it is possible that by aligningm we ended up in a new }
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{ bank, so set the correct bank again to make sure }
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setwritebank(offs shr 16);
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setreadbank(offs shr 16);
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{$ifdef logging2}
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LogLn('Rest to be drawn in this window: '+strf(bankrest));
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{$endif logging}
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For l := 0 to (Bankrest div 2)-1 Do
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MemL[WinWriteSeg:word(offs)+l*4] :=
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MemL[WinReadSeg:word(offs)+l*4] Xor Mask;
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inc(offs,l*4+4);
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dec(hlength,l*2+2);
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{$ifdef logging2}
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LogLn('Offset is now '+hexstr(offs,8)+', length left: '+strf(hlength));
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{$endif logging}
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End
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Else
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Begin
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{$ifdef logging2}
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LogLn('Drawing leftover: '+strf(HLength)+' at offset '+hexstr(offs,8));
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{$endif logging}
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if HLength > 0 then
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begin
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{ this may cross a bank at any time, so adjust }
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{ because this loop always runs for very little pixels, }
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{ there's little gained by splitting it up }
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setreadbank(offs shr 16);
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setwritebank(offs shr 16);
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MemW[WinWriteSeg:word(offs)] :=
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MemW[WinReadSeg:word(offs)] Xor Word(currentColor);
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HLength := 0
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end;
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End
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Until HLength = 0;
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End;
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OrPut:
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Begin
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Repeat
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curbank := smallint(offs shr 16);
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SetWriteBank(curbank);
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SetReadBank(curbank);
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{$ifdef logging2}
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LogLn('set bank '+strf(curbank)+' for offset '+hexstr(offs,8));
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{$endif logging2}
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If ((HLength >= 2) and
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((offs and 3) = 0)) or
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(HLength >= 3) Then
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{ align target }
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Begin
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If (offs and 3) <> 0 then
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{ this cannot go past a window boundary because the }
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{ size of a window is always a multiple of 4 }
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Begin
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{$ifdef logging2}
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LogLn('Aligning by drawing 1 pixel');
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{$endif logging2}
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MemW[WinWriteSeg:word(offs)] :=
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MemW[WinReadSeg:word(offs)] Or Word(CurrentColor);
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Dec(HLength);
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inc(offs, 2);
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End;
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{$ifdef logging2}
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LogLn('Offset is now '+hexstr(offs,8)+', length left: '+strf(hlength));
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{$endif logging}
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{ offs is now 4-bytes aligned }
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If HLength <= (($10000-(Offs and $ffff)) shr 1) Then
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bankrest := HLength
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else {the rest won't fit anymore in the current window }
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bankrest := ($10000 - (Offs and $ffff)) shr 1;
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{ it is possible that by aligningm we ended up in a new }
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{ bank, so set the correct bank again to make sure }
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setwritebank(offs shr 16);
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setreadbank(offs shr 16);
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{$ifdef logging2}
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LogLn('Rest to be drawn in this window: '+strf(bankrest));
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{$endif logging}
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For l := 0 to (Bankrest div 2)-1 Do
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MemL[WinWriteSeg:word(offs)+l*4] :=
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MemL[WinReadSeg:word(offs)+l*4] Or Mask;
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inc(offs,l*4+4);
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dec(hlength,l*2+2);
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{$ifdef logging2}
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LogLn('Offset is now '+hexstr(offs,8)+', length left: '+strf(hlength));
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{$endif logging}
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End
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Else
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Begin
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{$ifdef logging2}
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LogLn('Drawing leftover: '+strf(HLength)+' at offset '+hexstr(offs,8));
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{$endif logging}
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if HLength > 0 then
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begin
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{ this may cross a bank at any time, so adjust }
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{ because this loop always runs for very little pixels, }
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{ there's little gained by splitting it up }
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setreadbank(offs shr 16);
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setwritebank(offs shr 16);
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MemW[WinWriteSeg:word(offs)] :=
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MemW[WinReadSeg:word(offs)] Or Word(currentColor);
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HLength := 0
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end;
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End
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Until HLength = 0;
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End
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Else
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Begin
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If CurrentWriteMode = NotPut Then
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Mask := Not(Mask);
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Repeat
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curbank := smallint(offs shr 16);
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SetWriteBank(curbank);
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SetReadBank(curbank);
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{$ifdef logging2}
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LogLn('set bank '+strf(curbank)+' for offset '+hexstr(offs,8));
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{$endif logging2}
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If ((HLength >= 2) and
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((offs and 3) = 0)) or
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(HLength >= 3) Then
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{ align target }
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Begin
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If (offs and 3) <> 0 then
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{ this cannot go past a window boundary because the }
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{ size of a window is always a multiple of 4 }
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Begin
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{$ifdef logging2}
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LogLn('Aligning by drawing 1 pixel');
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{$endif logging2}
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MemW[WinWriteSeg:word(offs)] := Word(Mask);
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Dec(HLength);
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inc(offs, 2);
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End;
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{$ifdef logging2}
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LogLn('Offset is now '+hexstr(offs,8)+', length left: '+strf(hlength));
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{$endif logging}
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{ offs is now 4-bytes aligned }
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If HLength <= (($10000-(Offs and $ffff)) shr 1) Then
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bankrest := HLength
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else {the rest won't fit anymore in the current window }
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bankrest := ($10000 - (Offs and $ffff)) shr 1;
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{ it is possible that by aligningm we ended up in a new }
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{ bank, so set the correct bank again to make sure }
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setwritebank(offs shr 16);
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setreadbank(offs shr 16);
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{$ifdef logging2}
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LogLn('Rest to be drawn in this window: '+strf(bankrest));
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{$endif logging}
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For l := 0 to (Bankrest div 2)-1 Do
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MemL[WinWriteSeg:word(offs)+l*4] := Mask;
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inc(offs,l*4+4);
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dec(hlength,l*2+2);
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{$ifdef logging2}
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LogLn('Offset is now '+hexstr(offs,8)+', length left: '+strf(hlength));
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{$endif logging}
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End
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Else
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Begin
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{$ifdef logging2}
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LogLn('Drawing leftover: '+strf(HLength)+' at offset '+hexstr(offs,8));
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{$endif logging}
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if HLength > 0 then
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begin
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{ this may cross a bank at any time, so adjust }
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{ because this loop always runs for very little pixels, }
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{ there's little gained by splitting it up }
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setreadbank(offs shr 16);
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setwritebank(offs shr 16);
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MemW[WinWriteSeg:word(offs)] := Word(Mask);
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HLength := 0
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end;
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End
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Until HLength = 0;
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End;
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End;
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end;
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end;
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{$ifdef FPC}
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{************************************************************************}
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{* 15/16bit pixels VESA mode routines Linear mode *}
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