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[BOOTVID] Factor out the common code that is used before setting pixels.

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Hermès Bélusca-Maïto 2019-12-22 14:54:33 +01:00
parent 4f76cffb59
commit 93e9877225
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1 changed files with 17 additions and 32 deletions
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49
drivers/base/bootvid/i386/vga.c
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@ -87,6 +87,19 @@ ReadWriteMode(IN UCHAR Mode)
__outpb(VGA_BASE_IO_PORT + GRAPH_DATA_PORT, Mode | Value);
}
static VOID
PrepareForSetPixel(VOID)
{
/* Switch to mode 10 */
ReadWriteMode(10);
/* Clear the 4 planes (we're already in unchained mode here) */
__outpw(VGA_BASE_IO_PORT + SEQ_ADDRESS_PORT, 0x0F02);
/* Select the color don't care register */
__outpw(VGA_BASE_IO_PORT + GRAPH_ADDRESS_PORT, 7);
}
FORCEINLINE
VOID
SetPixel(IN ULONG Left,
@ -133,14 +146,7 @@ DisplayCharacter(IN CHAR Character,
ULONG Height;
UCHAR Shift;
/* Switch to mode 10 */
ReadWriteMode(10);
/* Clear the 4 planes (we're already in unchained mode here) */
__outpw(VGA_BASE_IO_PORT + SEQ_ADDRESS_PORT, 0x0F02);
/* Select the color don't care register */
__outpw(VGA_BASE_IO_PORT + GRAPH_ADDRESS_PORT, 7);
PrepareForSetPixel();
/* Calculate shift */
Shift = Left & 7;
@ -427,14 +433,7 @@ BitBlt(IN ULONG Left,
return;
}
/* Switch to mode 10 */
ReadWriteMode(10);
/* Clear the 4 planes (we're already in unchained mode here) */
__outpw(VGA_BASE_IO_PORT + SEQ_ADDRESS_PORT, 0x0F02);
/* Select the color don't care register */
__outpw(VGA_BASE_IO_PORT + GRAPH_ADDRESS_PORT, 7);
PrepareForSetPixel();
/* 4bpp blitting */
for (dy = Top; dy < Bottom; ++dy)
@ -473,14 +472,7 @@ RleBitBlt(IN ULONG Left,
ULONG i, j;
ULONG Code;
/* Switch to mode 10 */
ReadWriteMode(10);
/* Clear the 4 planes (we're already in unchained mode here) */
__outpw(VGA_BASE_IO_PORT + SEQ_ADDRESS_PORT, 0x0F02);
/* Select the color don't care register */
__outpw(VGA_BASE_IO_PORT + GRAPH_ADDRESS_PORT, 7);
PrepareForSetPixel();
/* Set Y height and current X value and start loop */
YDelta = Top + Height - 1;
@ -1034,14 +1026,7 @@ VidSolidColorFill(IN ULONG Left,
/* If there is no distance, then combine the right and left masks */
if (!Distance) lMask &= rMask;
/* Switch to mode 10 */
ReadWriteMode(10);
/* Clear the 4 planes (we're already in unchained mode here) */
__outpw(VGA_BASE_IO_PORT + SEQ_ADDRESS_PORT, 0x0F02);
/* Select the color don't care register */
__outpw(VGA_BASE_IO_PORT + GRAPH_ADDRESS_PORT, 7);
PrepareForSetPixel();
/* Calculate pixel position for the read */
Offset = (PUCHAR)(VgaBase + (Top * (SCREEN_WIDTH / 8)) + LeftOffset);