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fixed bug in tiled background, found by heavyiron

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git-svn-id: svn://kolibrios.org@784 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Evgeny Grechnikov (Diamond) 2008-04-02 18:40:54 +00:00
parent 0d87986066
commit 90a098b648
1 changed files with 5 additions and 5 deletions
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10
kernel/trunk/video/vesa20.inc
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@ -799,15 +799,15 @@ dp2:
push eax
xor edx, edx
mov eax, ebx
mov ecx, [BgrDataHeight]
div ecx ; edx := y mod BgrDataHeight
sub ecx, edx ; ecx := BgrDataHeight - (y mod BgrDataHeight)
div dword [BgrDataHeight] ; edx := y mod BgrDataHeight
pop eax
push eax
mov ecx, [BgrDataWidth]
mov esi, edx
imul esi, [BgrDataWidth] ; esi := (y mod BgrDataHeight) * BgrDataWidth
imul esi, ecx ; esi := (y mod BgrDataHeight) * BgrDataWidth
xor edx, edx
div dword [BgrDataWidth] ; edx := x mod BgrDataWidth
div ecx ; edx := x mod BgrDataWidth
sub ecx, edx
add esi, edx ; esi := (y mod BgrDataHeight)*BgrDataWidth + (x mod BgrDataWidth)
pop eax
lea esi, [esi*3]