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[NTVDM]

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Adjust Bda->ScreenColumns in graphics modes. Fix line wrapping.


svn path=/trunk/; revision=68090
This commit is contained in:
Aleksandar Andrejevic 2015-06-09 14:00:43 +00:00
parent d15ab1916a
commit e730ef4e7d
1 changed files with 21 additions and 11 deletions
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32
reactos/subsystems/mvdm/ntvdm/bios/vidbios.c
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@ -2445,6 +2445,9 @@ static BOOLEAN VidBiosSetVideoMode(BYTE ModeNumber)
Bda->ScreenColumns = Resolution.X;
Bda->ScreenRows = Resolution.Y - 1;
/* Adjust the number of columns for graphics modes */
if (ModeNumber > 3) Bda->ScreenColumns >>= 3;
/* Update the current font */
Bda->CharacterHeight = VideoModes[ModeNumber].CharacterHeight;
switch (Bda->CharacterHeight)
@ -2614,15 +2617,17 @@ static VOID VidBiosDrawGlyph(WORD CharData, BOOLEAN UseAttr, BYTE Page, BYTE Row
/* Read from VGA memory to load the latch register */
EmulatorReadMemory(&EmulatorContext,
TO_LINEAR(CgaSegment[(Row + i) & 1],
((((Row + i) >> 1) * Bda->ScreenColumns) >> 2) + Column * 2),
TO_LINEAR(CgaSegment[(Row * Bda->CharacterHeight + i) & 1],
(((Row * Bda->CharacterHeight + i) >> 1)
* Bda->ScreenColumns + Column) * 2),
(LPVOID)&Dummy,
sizeof(USHORT));
}
EmulatorWriteMemory(&EmulatorContext,
TO_LINEAR(CgaSegment[(Row + i) & 1],
((((Row + i) >> 1) * Bda->ScreenColumns) >> 2) + Column * 2),
TO_LINEAR(CgaSegment[(Row * Bda->CharacterHeight + i) & 1],
(((Row * Bda->CharacterHeight + i) >> 1)
* Bda->ScreenColumns + Column) * 2),
(LPVOID)&Pixel,
sizeof(USHORT));
}
@ -2662,15 +2667,17 @@ static VOID VidBiosDrawGlyph(WORD CharData, BOOLEAN UseAttr, BYTE Page, BYTE Row
/* Read from VGA memory to load the latch register */
EmulatorReadMemory(&EmulatorContext,
TO_LINEAR(CgaSegment[(Row + i) & 1],
((((Row + i) >> 1) * Bda->ScreenColumns) >> 3) + Column),
TO_LINEAR(CgaSegment[(Row * Bda->CharacterHeight + i) & 1],
(((Row * Bda->CharacterHeight + i) >> 1)
* Bda->ScreenColumns) + Column),
(LPVOID)&Dummy,
sizeof(UCHAR));
}
EmulatorWriteMemory(&EmulatorContext,
TO_LINEAR(CgaSegment[(Row + i) & 1],
((((Row + i) >> 1) * Bda->ScreenColumns) >> 3) + Column),
TO_LINEAR(CgaSegment[(Row * Bda->CharacterHeight + i) & 1],
(((Row * Bda->CharacterHeight + i) >> 1)
* Bda->ScreenColumns) + Column),
(LPVOID)&Glyph[i],
sizeof(UCHAR));
}
@ -2734,14 +2741,16 @@ static VOID VidBiosDrawGlyph(WORD CharData, BOOLEAN UseAttr, BYTE Page, BYTE Row
/* Read from VGA memory to load the latch register */
EmulatorReadMemory(&EmulatorContext,
TO_LINEAR(GRAPHICS_VIDEO_SEG,
(((Row + i) * Bda->ScreenColumns) >> 3) + Column),
((Row * Bda->CharacterHeight + i)
* Bda->ScreenColumns) + Column),
(LPVOID)&Dummy,
sizeof(UCHAR));
}
EmulatorWriteMemory(&EmulatorContext,
TO_LINEAR(GRAPHICS_VIDEO_SEG,
(((Row + i) * Bda->ScreenColumns) >> 3) + Column),
((Row * Bda->CharacterHeight + i)
* Bda->ScreenColumns) + Column),
(LPVOID)&Glyph[i],
sizeof(UCHAR));
}
@ -2782,7 +2791,8 @@ static VOID VidBiosDrawGlyph(WORD CharData, BOOLEAN UseAttr, BYTE Page, BYTE Row
EmulatorWriteMemory(&EmulatorContext,
TO_LINEAR(GRAPHICS_VIDEO_SEG,
(Row + i) * Bda->ScreenColumns + Column * 8),
((Row * Bda->CharacterHeight + i)
* Bda->ScreenColumns + Column) << 3),
(LPVOID)PixelBuffer,
sizeof(PixelBuffer));
}