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* perform the clipping before initializing ES in PutPixel320, so it runs faster

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when the pixel happens to be outside the viewport

git-svn-id: trunk@41005 -
This commit is contained in:
nickysn 2019-01-22 16:56:16 +00:00
parent 7c4466025a
commit a854411e7c
1 changed files with 7 additions and 7 deletions
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14
packages/graph/src/msdos/graph.pp
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@ -2236,13 +2236,6 @@ End;
{$else asmgraph}
Procedure PutPixel320(X,Y : smallint; Pixel: ColorType); assembler;
asm
{$ifdef FPC_MM_HUGE}
mov ax, SEG SegA000
mov es, ax
mov es, es:[SegA000]
{$else FPC_MM_HUGE}
mov es, [SegA000]
{$endif FPC_MM_HUGE}
mov ax, [Y]
mov di, [X]
cmp byte ptr [ClipPixels], 0
@ -2258,6 +2251,13 @@ End;
jg @@Done
@@ClipDone:
{$ifdef FPC_MM_HUGE}
mov bx, SEG SegA000
mov es, bx
mov es, es:[SegA000]
{$else FPC_MM_HUGE}
mov es, [SegA000]
{$endif FPC_MM_HUGE}
add ax, [StartYViewPort]
add di, [StartXViewPort]
xchg ah, al { The value of Y must be in AH }