mirror of
https://github.com/reactos/reactos.git
synced 2024-11-07 23:22:36 +00:00
ede3fddad7
- Import cmdcnst.h and vga.h headers from the 'vga_new' VGA Miniport Driver, that contain definitions related to VGA registers as well as command-stream functionality. - Replace a bunch of hardcoded values by their corresponding defintions. - Replace "Captain-Obvious" comments in VgaIsPresent() with actual explanations from the corresponding function in 'vga_new'. - Simplify the VgaInterpretCmdStream() function, based on the corresponding one from 'vga_new'. - Use concise comments in the 'AT_Initialization' command stream definition. - Import the 'VGA_640x480' initialization command stream from 'vga_new' and use it as the full VGA initialization stream whenever the HAL does not handle the VGA display (HalResetDisplay() returning FALSE). Otherwise we just use the 'AT_Initialization' command stream that performs minimal initialization. - Remove unused AT_Initialization and other declarations from ARM build.
1153 lines
29 KiB
C
1153 lines
29 KiB
C
#include "precomp.h"
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/* GLOBALS *******************************************************************/
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static ULONG ScrollRegion[4] =
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{
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0,
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0,
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640 - 1,
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480 - 1
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};
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static UCHAR lMaskTable[8] =
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{
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(1 << 8) - (1 << 0),
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(1 << 7) - (1 << 0),
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(1 << 6) - (1 << 0),
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(1 << 5) - (1 << 0),
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(1 << 4) - (1 << 0),
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(1 << 3) - (1 << 0),
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(1 << 2) - (1 << 0),
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(1 << 1) - (1 << 0)
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};
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static UCHAR rMaskTable[8] =
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{
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(1 << 7),
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(1 << 7)+ (1 << 6),
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(1 << 7)+ (1 << 6) + (1 << 5),
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(1 << 7)+ (1 << 6) + (1 << 5) + (1 << 4),
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(1 << 7)+ (1 << 6) + (1 << 5) + (1 << 4) + (1 << 3),
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(1 << 7)+ (1 << 6) + (1 << 5) + (1 << 4) + (1 << 3) + (1 << 2),
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(1 << 7)+ (1 << 6) + (1 << 5) + (1 << 4) + (1 << 3) + (1 << 2) + (1 << 1),
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(1 << 7)+ (1 << 6) + (1 << 5) + (1 << 4) + (1 << 3) + (1 << 2) + (1 << 1) +
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(1 << 0),
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};
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UCHAR PixelMask[8] =
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{
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(1 << 7),
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(1 << 6),
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(1 << 5),
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(1 << 4),
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(1 << 3),
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(1 << 2),
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(1 << 1),
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(1 << 0),
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};
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static ULONG lookup[16] =
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{
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0x0000,
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0x0100,
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0x1000,
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0x1100,
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0x0001,
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0x0101,
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0x1001,
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0x1101,
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0x0010,
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0x0110,
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0x1010,
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0x1110,
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0x0011,
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0x0111,
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0x1011,
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0x1111,
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};
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ULONG_PTR VgaRegisterBase = 0;
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ULONG_PTR VgaBase = 0;
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ULONG curr_x = 0;
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ULONG curr_y = 0;
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static ULONG VidTextColor = 0xF;
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static BOOLEAN CarriageReturn = FALSE;
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/* PRIVATE FUNCTIONS *********************************************************/
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static VOID
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NTAPI
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ReadWriteMode(IN UCHAR Mode)
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{
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UCHAR Value;
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/* Switch to graphics mode register */
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__outpb(VGA_BASE_IO_PORT + GRAPH_ADDRESS_PORT, IND_GRAPH_MODE);
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/* Get the current register value, minus the current mode */
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Value = __inpb(VGA_BASE_IO_PORT + GRAPH_DATA_PORT) & 0xF4;
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/* Set the new mode */
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__outpb(VGA_BASE_IO_PORT + GRAPH_DATA_PORT, Mode | Value);
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}
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FORCEINLINE
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VOID
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SetPixel(IN ULONG Left,
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IN ULONG Top,
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IN UCHAR Color)
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{
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PUCHAR PixelPosition;
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/* Calculate the pixel position. */
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PixelPosition = (PUCHAR)(VgaBase + (Left >> 3) + (Top * 80));
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/* Select the bitmask register and write the mask */
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__outpw(VGA_BASE_IO_PORT + GRAPH_ADDRESS_PORT, (PixelMask[Left & 7] << 8) | IND_BIT_MASK);
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/* Read the current pixel value and add our color */
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WRITE_REGISTER_UCHAR(PixelPosition,
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READ_REGISTER_UCHAR(PixelPosition) & Color);
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}
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#define SET_PIXELS(_PixelPtr, _PixelMask, _TextColor) \
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do { \
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/* Select the bitmask register and write the mask */ \
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__outpw(VGA_BASE_IO_PORT + GRAPH_ADDRESS_PORT, ((_PixelMask) << 8) | IND_BIT_MASK); \
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/* Set the new color */ \
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WRITE_REGISTER_UCHAR((_PixelPtr), (UCHAR)(_TextColor)); \
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} while (0);
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#ifdef CHAR_GEN_UPSIDE_DOWN
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# define GetFontPtr(_Char) &FontData[_Char * BOOTCHAR_HEIGHT] + BOOTCHAR_HEIGHT - 1;
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# define FONT_PTR_DELTA (-1)
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#else
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# define GetFontPtr(_Char) &FontData[_Char * BOOTCHAR_HEIGHT];
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# define FONT_PTR_DELTA (1)
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#endif
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static VOID
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NTAPI
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DisplayCharacter(IN CHAR Character,
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IN ULONG Left,
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IN ULONG Top,
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IN ULONG TextColor,
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IN ULONG BackColor)
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{
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PUCHAR FontChar, PixelPtr;
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ULONG Height;
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UCHAR Shift;
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/* Switch to mode 10 */
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ReadWriteMode(10);
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/* Clear the 4 planes (we're already in unchained mode here) */
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__outpw(VGA_BASE_IO_PORT + SEQ_ADDRESS_PORT, 0x0F02);
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/* Select the color don't care register */
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__outpw(VGA_BASE_IO_PORT + GRAPH_ADDRESS_PORT, 7);
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/* Calculate shift */
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Shift = Left & 7;
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/* Get the font and pixel pointer */
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FontChar = GetFontPtr(Character);
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PixelPtr = (PUCHAR)(VgaBase + (Left >> 3) + (Top * 80));
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/* Loop all pixel rows */
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Height = BOOTCHAR_HEIGHT;
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do
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{
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SET_PIXELS(PixelPtr, *FontChar >> Shift, TextColor);
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PixelPtr += 80;
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FontChar += FONT_PTR_DELTA;
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} while (--Height);
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/* Check if we need to update neighbor bytes */
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if (Shift)
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{
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/* Calculate shift for 2nd byte */
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Shift = 8 - Shift;
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/* Get the font and pixel pointer (2nd byte) */
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FontChar = GetFontPtr(Character);
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PixelPtr = (PUCHAR)(VgaBase + (Left >> 3) + (Top * 80) + 1);
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/* Loop all pixel rows */
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Height = BOOTCHAR_HEIGHT;
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do
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{
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SET_PIXELS(PixelPtr, *FontChar << Shift, TextColor);
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PixelPtr += 80;
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FontChar += FONT_PTR_DELTA;
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} while (--Height);
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}
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/* Check if the background color is transparent */
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if (BackColor >= 16)
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{
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/* We are done */
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return;
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}
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/* Calculate shift */
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Shift = Left & 7;
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/* Get the font and pixel pointer */
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FontChar = GetFontPtr(Character);
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PixelPtr = (PUCHAR)(VgaBase + (Left >> 3) + (Top * 80));
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/* Loop all pixel rows */
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Height = BOOTCHAR_HEIGHT;
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do
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{
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SET_PIXELS(PixelPtr, ~*FontChar >> Shift, BackColor);
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PixelPtr += 80;
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FontChar += FONT_PTR_DELTA;
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} while (--Height);
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/* Check if we need to update neighbor bytes */
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if (Shift)
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{
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/* Calculate shift for 2nd byte */
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Shift = 8 - Shift;
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/* Get the font and pixel pointer (2nd byte) */
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FontChar = GetFontPtr(Character);
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PixelPtr = (PUCHAR)(VgaBase + (Left >> 3) + (Top * 80) + 1);
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/* Loop all pixel rows */
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Height = BOOTCHAR_HEIGHT;
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do
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{
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SET_PIXELS(PixelPtr, ~*FontChar << Shift, BackColor);
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PixelPtr += 80;
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FontChar += FONT_PTR_DELTA;
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} while (--Height);
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}
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}
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static VOID
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NTAPI
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DisplayStringXY(IN PUCHAR String,
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IN ULONG Left,
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IN ULONG Top,
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IN ULONG TextColor,
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IN ULONG BackColor)
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{
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/* Loop every character */
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while (*String)
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{
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/* Display a character */
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DisplayCharacter(*String, Left, Top, TextColor, BackColor);
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/* Move to next character and next position */
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String++;
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Left += 8;
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}
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}
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static VOID
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NTAPI
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SetPaletteEntryRGB(IN ULONG Id,
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IN ULONG Rgb)
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{
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PCHAR Colors = (PCHAR)&Rgb;
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/* Set the palette index */
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__outpb(VGA_BASE_IO_PORT + DAC_ADDRESS_WRITE_PORT, (UCHAR)Id);
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/* Set RGB colors */
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__outpb(VGA_BASE_IO_PORT + DAC_DATA_REG_PORT, Colors[2] >> 2);
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__outpb(VGA_BASE_IO_PORT + DAC_DATA_REG_PORT, Colors[1] >> 2);
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__outpb(VGA_BASE_IO_PORT + DAC_DATA_REG_PORT, Colors[0] >> 2);
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}
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static VOID
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NTAPI
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InitPaletteWithTable(IN PULONG Table,
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IN ULONG Count)
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{
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ULONG i;
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PULONG Entry = Table;
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/* Loop every entry */
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for (i = 0; i < Count; i++, Entry++)
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{
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/* Set the entry */
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SetPaletteEntryRGB(i, *Entry);
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}
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}
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static VOID
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NTAPI
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SetPaletteEntry(IN ULONG Id,
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IN ULONG PaletteEntry)
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{
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/* Set the palette index */
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__outpb(VGA_BASE_IO_PORT + DAC_ADDRESS_WRITE_PORT, (UCHAR)Id);
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/* Set RGB colors */
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__outpb(VGA_BASE_IO_PORT + DAC_DATA_REG_PORT, PaletteEntry & 0xFF);
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__outpb(VGA_BASE_IO_PORT + DAC_DATA_REG_PORT, (PaletteEntry >>= 8) & 0xFF);
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__outpb(VGA_BASE_IO_PORT + DAC_DATA_REG_PORT, (PaletteEntry >> 8) & 0xFF);
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}
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VOID
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NTAPI
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InitializePalette(VOID)
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{
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ULONG PaletteEntry[16] = {0x000000,
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0x000020,
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0x002000,
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0x002020,
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0x200000,
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0x200020,
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0x202000,
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0x202020,
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0x303030,
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0x00003F,
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0x003F00,
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0x003F3F,
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0x3F0000,
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0x3F003F,
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0x3F3F00,
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0x3F3F3F};
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ULONG i;
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/* Loop all the entries and set their palettes */
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for (i = 0; i < 16; i++) SetPaletteEntry(i, PaletteEntry[i]);
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}
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static VOID
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NTAPI
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VgaScroll(IN ULONG Scroll)
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{
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ULONG Top, RowSize;
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PUCHAR OldPosition, NewPosition;
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/* Clear the 4 planes */
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__outpw(VGA_BASE_IO_PORT + SEQ_ADDRESS_PORT, 0x0F02);
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/* Set the bitmask to 0xFF for all 4 planes */
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__outpw(VGA_BASE_IO_PORT + GRAPH_ADDRESS_PORT, 0xFF08);
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/* Set Mode 1 */
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ReadWriteMode(1);
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RowSize = (ScrollRegion[2] - ScrollRegion[0] + 1) / 8;
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/* Calculate the position in memory for the row */
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OldPosition = (PUCHAR)(VgaBase + (ScrollRegion[1] + Scroll) * 80 + ScrollRegion[0] / 8);
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NewPosition = (PUCHAR)(VgaBase + ScrollRegion[1] * 80 + ScrollRegion[0] / 8);
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/* Start loop */
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for (Top = ScrollRegion[1]; Top <= ScrollRegion[3]; ++Top)
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{
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#if defined(_M_IX86) || defined(_M_AMD64)
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__movsb(NewPosition, OldPosition, RowSize);
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#else
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ULONG i;
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/* Scroll the row */
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for (i = 0; i < RowSize; ++i)
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WRITE_REGISTER_UCHAR(NewPosition + i, READ_REGISTER_UCHAR(OldPosition + i));
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#endif
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OldPosition += 80;
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NewPosition += 80;
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}
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}
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static VOID
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NTAPI
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PreserveRow(IN ULONG CurrentTop,
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IN ULONG TopDelta,
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IN BOOLEAN Direction)
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{
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PUCHAR Position1, Position2;
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ULONG Count;
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/* Clear the 4 planes */
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__outpw(VGA_BASE_IO_PORT + SEQ_ADDRESS_PORT, 0x0F02);
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/* Set the bitmask to 0xFF for all 4 planes */
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__outpw(VGA_BASE_IO_PORT + GRAPH_ADDRESS_PORT, 0xFF08);
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/* Set Mode 1 */
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ReadWriteMode(1);
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/* Check which way we're preserving */
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if (Direction)
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{
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/* Calculate the position in memory for the row */
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Position1 = (PUCHAR)(VgaBase + CurrentTop * 80);
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Position2 = (PUCHAR)(VgaBase + 0x9600);
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}
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else
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{
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/* Calculate the position in memory for the row */
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Position1 = (PUCHAR)(VgaBase + 0x9600);
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Position2 = (PUCHAR)(VgaBase + CurrentTop * 80);
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}
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/* Set the count and loop every pixel */
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Count = TopDelta * 80;
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#if defined(_M_IX86) || defined(_M_AMD64)
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__movsb(Position1, Position2, Count);
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#else
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while (Count--)
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{
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/* Write the data back on the other position */
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WRITE_REGISTER_UCHAR(Position1, READ_REGISTER_UCHAR(Position2));
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/* Increase both positions */
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Position1++;
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Position2++;
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}
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#endif
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}
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static VOID
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NTAPI
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BitBlt(IN ULONG Left,
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IN ULONG Top,
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IN ULONG Width,
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IN ULONG Height,
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IN PUCHAR Buffer,
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IN ULONG BitsPerPixel,
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IN ULONG Delta)
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{
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ULONG sx, dx, dy;
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UCHAR color;
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ULONG offset = 0;
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const ULONG Bottom = Top + Height;
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const ULONG Right = Left + Width;
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/* Check if the buffer isn't 4bpp */
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if (BitsPerPixel != 4)
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{
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/* FIXME: TODO */
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DbgPrint("Unhandled BitBlt\n"
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"%lux%lu @ (%lu|%lu)\n"
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"Bits Per Pixel %lu\n"
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"Buffer: %p. Delta: %lu\n",
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Width,
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Height,
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Left,
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Top,
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BitsPerPixel,
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Buffer,
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Delta);
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return;
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}
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/* Switch to mode 10 */
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ReadWriteMode(10);
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/* Clear the 4 planes (we're already in unchained mode here) */
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__outpw(VGA_BASE_IO_PORT + SEQ_ADDRESS_PORT, 0x0F02);
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/* Select the color don't care register */
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__outpw(VGA_BASE_IO_PORT + GRAPH_ADDRESS_PORT, 7);
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/* 4bpp blitting */
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dy = Top;
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do
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{
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sx = 0;
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do
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{
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/* Extract color */
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color = Buffer[offset + sx];
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/* Calc destination x */
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dx = Left + (sx << 1);
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/* Set two pixels */
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SetPixel(dx, dy, color >> 4);
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SetPixel(dx + 1, dy, color & 0x0F);
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sx++;
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} while (dx < Right);
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offset += Delta;
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dy++;
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} while (dy < Bottom);
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}
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static VOID
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NTAPI
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RleBitBlt(IN ULONG Left,
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IN ULONG Top,
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IN ULONG Width,
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IN ULONG Height,
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IN PUCHAR Buffer)
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{
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ULONG YDelta;
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ULONG x;
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ULONG RleValue, NewRleValue;
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ULONG Color, Color2;
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ULONG i, j;
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ULONG Code;
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|
|
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/* Switch to mode 10 */
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ReadWriteMode(10);
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/* Clear the 4 planes (we're already in unchained mode here) */
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__outpw(VGA_BASE_IO_PORT + SEQ_ADDRESS_PORT, 0x0F02);
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/* Select the color don't care register */
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__outpw(VGA_BASE_IO_PORT + GRAPH_ADDRESS_PORT, 7);
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/* Set Y height and current X value and start loop */
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YDelta = Top + Height - 1;
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x = Left;
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for (;;)
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{
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/* Get the current value and advance in the buffer */
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RleValue = *Buffer;
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Buffer++;
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if (RleValue)
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{
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/* Check if we've gone past the edge */
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if ((x + RleValue) > (Width + Left))
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{
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/* Fixup the pixel value */
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RleValue = Left - x + Width;
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}
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/* Get the new value */
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NewRleValue = *Buffer;
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/* Get the two colors */
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Color = NewRleValue >> 4;
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Color2 = NewRleValue & 0xF;
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/* Increase buffer position */
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Buffer++;
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/* Check if we need to do a fill */
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if (Color == Color2)
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{
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/* Do a fill and continue the loop */
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RleValue += x;
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VidSolidColorFill(x, YDelta, RleValue - 1, YDelta, (UCHAR)Color);
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x = RleValue;
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continue;
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}
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|
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/* Check if the pixel value is 1 or below */
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if (RleValue > 1)
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{
|
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/* Set loop variables */
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i = (RleValue - 2) / 2 + 1;
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do
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{
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|
/* Set the pixels */
|
|
SetPixel(x, YDelta, (UCHAR)Color);
|
|
x++;
|
|
SetPixel(x, YDelta, (UCHAR)Color2);
|
|
x++;
|
|
|
|
/* Decrease pixel value */
|
|
RleValue -= 2;
|
|
} while (--i);
|
|
}
|
|
|
|
/* Check if there is any value at all */
|
|
if (RleValue)
|
|
{
|
|
/* Set the pixel and increase position */
|
|
SetPixel(x, YDelta, (UCHAR)Color);
|
|
x++;
|
|
}
|
|
|
|
/* Start over */
|
|
continue;
|
|
}
|
|
|
|
/* Get the current pixel value */
|
|
RleValue = *Buffer;
|
|
Code = RleValue;
|
|
switch (Code)
|
|
{
|
|
/* Case 0 */
|
|
case 0:
|
|
{
|
|
/* Set new x value, decrease distance and restart */
|
|
x = Left;
|
|
YDelta--;
|
|
Buffer++;
|
|
continue;
|
|
}
|
|
|
|
/* Case 1 */
|
|
case 1:
|
|
{
|
|
/* Done */
|
|
return;
|
|
}
|
|
|
|
/* Case 2 */
|
|
case 2:
|
|
{
|
|
/* Set new x value, decrease distance and restart */
|
|
Buffer++;
|
|
x += *Buffer;
|
|
Buffer++;
|
|
YDelta -= *Buffer;
|
|
Buffer++;
|
|
continue;
|
|
}
|
|
|
|
/* Other values */
|
|
default:
|
|
{
|
|
Buffer++;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Check if we've gone past the edge */
|
|
if ((x + RleValue) > (Width + Left))
|
|
{
|
|
/* Set fixed up loop count */
|
|
i = RleValue - Left - Width + x;
|
|
|
|
/* Fixup pixel value */
|
|
RleValue -= i;
|
|
}
|
|
else
|
|
{
|
|
/* Clear loop count */
|
|
i = 0;
|
|
}
|
|
|
|
/* Check the value now */
|
|
if (RleValue > 1)
|
|
{
|
|
/* Set loop variables */
|
|
j = (RleValue - 2) / 2 + 1;
|
|
do
|
|
{
|
|
/* Get the new value */
|
|
NewRleValue = *Buffer;
|
|
|
|
/* Get the two colors */
|
|
Color = NewRleValue >> 4;
|
|
Color2 = NewRleValue & 0xF;
|
|
|
|
/* Increase buffer position */
|
|
Buffer++;
|
|
|
|
/* Set the pixels */
|
|
SetPixel(x, YDelta, (UCHAR)Color);
|
|
x++;
|
|
SetPixel(x, YDelta, (UCHAR)Color2);
|
|
x++;
|
|
|
|
/* Decrease pixel value */
|
|
RleValue -= 2;
|
|
} while (--j);
|
|
}
|
|
|
|
/* Check if there is any value at all */
|
|
if (RleValue)
|
|
{
|
|
/* Set the pixel and increase position */
|
|
Color = *Buffer >> 4;
|
|
Buffer++;
|
|
SetPixel(x, YDelta, (UCHAR)Color);
|
|
x++;
|
|
i--;
|
|
}
|
|
|
|
/* Check loop count now */
|
|
if ((LONG)i > 0)
|
|
{
|
|
/* Decrease it */
|
|
i--;
|
|
|
|
/* Set new position */
|
|
Buffer = Buffer + (i / 2) + 1;
|
|
}
|
|
|
|
/* Check if we need to increase the buffer */
|
|
if ((ULONG_PTR)Buffer & 1) Buffer++;
|
|
}
|
|
}
|
|
|
|
/* PUBLIC FUNCTIONS **********************************************************/
|
|
|
|
/*
|
|
* @implemented
|
|
*/
|
|
ULONG
|
|
NTAPI
|
|
VidSetTextColor(IN ULONG Color)
|
|
{
|
|
ULONG OldColor;
|
|
|
|
/* Save the old color and set the new one */
|
|
OldColor = VidTextColor;
|
|
VidTextColor = Color;
|
|
return OldColor;
|
|
}
|
|
|
|
/*
|
|
* @implemented
|
|
*/
|
|
VOID
|
|
NTAPI
|
|
VidDisplayStringXY(IN PUCHAR String,
|
|
IN ULONG Left,
|
|
IN ULONG Top,
|
|
IN BOOLEAN Transparent)
|
|
{
|
|
ULONG BackColor;
|
|
|
|
/*
|
|
* If the caller wanted transparent, then send the special value (16),
|
|
* else use our default and call the helper routine.
|
|
*/
|
|
BackColor = Transparent ? 16 : 14;
|
|
DisplayStringXY(String, Left, Top, 12, BackColor);
|
|
}
|
|
|
|
/*
|
|
* @implemented
|
|
*/
|
|
VOID
|
|
NTAPI
|
|
VidSetScrollRegion(IN ULONG Left,
|
|
IN ULONG Top,
|
|
IN ULONG Right,
|
|
IN ULONG Bottom)
|
|
{
|
|
/* Assert alignment */
|
|
ASSERT((Left & 0x7) == 0);
|
|
ASSERT((Right & 0x7) == 7);
|
|
|
|
/* Set Scroll Region */
|
|
ScrollRegion[0] = Left;
|
|
ScrollRegion[1] = Top;
|
|
ScrollRegion[2] = Right;
|
|
ScrollRegion[3] = Bottom;
|
|
|
|
/* Set current X and Y */
|
|
curr_x = Left;
|
|
curr_y = Top;
|
|
}
|
|
|
|
/*
|
|
* @implemented
|
|
*/
|
|
VOID
|
|
NTAPI
|
|
VidCleanUp(VOID)
|
|
{
|
|
/* Select bit mask register and clear it */
|
|
__outpb(VGA_BASE_IO_PORT + GRAPH_ADDRESS_PORT, IND_BIT_MASK);
|
|
__outpb(VGA_BASE_IO_PORT + GRAPH_DATA_PORT, BIT_MASK_DEFAULT);
|
|
}
|
|
|
|
/*
|
|
* @implemented
|
|
*/
|
|
VOID
|
|
NTAPI
|
|
VidBufferToScreenBlt(IN PUCHAR Buffer,
|
|
IN ULONG Left,
|
|
IN ULONG Top,
|
|
IN ULONG Width,
|
|
IN ULONG Height,
|
|
IN ULONG Delta)
|
|
{
|
|
/* Make sure we have a width and height */
|
|
if (!Width || !Height) return;
|
|
|
|
/* Call the helper function */
|
|
BitBlt(Left, Top, Width, Height, Buffer, 4, Delta);
|
|
}
|
|
|
|
/*
|
|
* @implemented
|
|
*/
|
|
VOID
|
|
NTAPI
|
|
VidDisplayString(IN PUCHAR String)
|
|
{
|
|
ULONG TopDelta = BOOTCHAR_HEIGHT + 1;
|
|
|
|
/* Start looping the string */
|
|
while (*String)
|
|
{
|
|
/* Treat new-line separately */
|
|
if (*String == '\n')
|
|
{
|
|
/* Modify Y position */
|
|
curr_y += TopDelta;
|
|
if (curr_y + TopDelta >= ScrollRegion[3])
|
|
{
|
|
/* Scroll the view */
|
|
VgaScroll(TopDelta);
|
|
curr_y -= TopDelta;
|
|
}
|
|
else
|
|
{
|
|
/* Preserve row */
|
|
PreserveRow(curr_y, TopDelta, FALSE);
|
|
}
|
|
|
|
/* Update current X */
|
|
curr_x = ScrollRegion[0];
|
|
|
|
/* Do not clear line if "\r\n" is given */
|
|
CarriageReturn = FALSE;
|
|
}
|
|
else if (*String == '\r')
|
|
{
|
|
/* Update current X */
|
|
curr_x = ScrollRegion[0];
|
|
|
|
/* Check if we're being followed by a new line */
|
|
CarriageReturn = TRUE;
|
|
}
|
|
else
|
|
{
|
|
/* check if we had a '\r' last time */
|
|
if (CarriageReturn)
|
|
{
|
|
/* We did, clear the current row */
|
|
PreserveRow(curr_y, TopDelta, TRUE);
|
|
CarriageReturn = FALSE;
|
|
}
|
|
|
|
/* Display this character */
|
|
DisplayCharacter(*String, curr_x, curr_y, VidTextColor, 16);
|
|
curr_x += 8;
|
|
|
|
/* Check if we should scroll */
|
|
if (curr_x + 8 > ScrollRegion[2])
|
|
{
|
|
/* Update Y position and check if we should scroll it */
|
|
curr_y += TopDelta;
|
|
if (curr_y + TopDelta > ScrollRegion[3])
|
|
{
|
|
/* Do the scroll */
|
|
VgaScroll(TopDelta);
|
|
curr_y -= TopDelta;
|
|
}
|
|
else
|
|
{
|
|
/* Preserve the current row */
|
|
PreserveRow(curr_y, TopDelta, FALSE);
|
|
}
|
|
|
|
/* Update X */
|
|
curr_x = ScrollRegion[0];
|
|
}
|
|
}
|
|
|
|
/* Get the next character */
|
|
String++;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* @implemented
|
|
*/
|
|
VOID
|
|
NTAPI
|
|
VidBitBlt(IN PUCHAR Buffer,
|
|
IN ULONG Left,
|
|
IN ULONG Top)
|
|
{
|
|
PBITMAPINFOHEADER BitmapInfoHeader;
|
|
LONG Delta;
|
|
PUCHAR BitmapOffset;
|
|
|
|
/* Get the Bitmap Header */
|
|
BitmapInfoHeader = (PBITMAPINFOHEADER)Buffer;
|
|
|
|
/* Initialize the palette */
|
|
InitPaletteWithTable((PULONG)(Buffer + BitmapInfoHeader->biSize),
|
|
(BitmapInfoHeader->biClrUsed) ?
|
|
BitmapInfoHeader->biClrUsed : 16);
|
|
|
|
/* Make sure we can support this bitmap */
|
|
ASSERT((BitmapInfoHeader->biBitCount * BitmapInfoHeader->biPlanes) <= 4);
|
|
|
|
/*
|
|
* Calculate the delta and align it on 32-bytes, then calculate
|
|
* the actual start of the bitmap data.
|
|
*/
|
|
Delta = (BitmapInfoHeader->biBitCount * BitmapInfoHeader->biWidth) + 31;
|
|
Delta >>= 3;
|
|
Delta &= ~3;
|
|
BitmapOffset = Buffer + sizeof(BITMAPINFOHEADER) + 16 * sizeof(ULONG);
|
|
|
|
/* Check the compression of the bitmap */
|
|
if (BitmapInfoHeader->biCompression == BI_RLE4)
|
|
{
|
|
/* Make sure we have a width and a height */
|
|
if ((BitmapInfoHeader->biWidth) && (BitmapInfoHeader->biHeight))
|
|
{
|
|
/* We can use RLE Bit Blt */
|
|
RleBitBlt(Left,
|
|
Top,
|
|
BitmapInfoHeader->biWidth,
|
|
BitmapInfoHeader->biHeight,
|
|
BitmapOffset);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Check if the height is negative */
|
|
if (BitmapInfoHeader->biHeight < 0)
|
|
{
|
|
/* Make it positive in the header */
|
|
BitmapInfoHeader->biHeight *= -1;
|
|
}
|
|
else
|
|
{
|
|
/* Update buffer offset */
|
|
BitmapOffset += ((BitmapInfoHeader->biHeight - 1) * Delta);
|
|
Delta *= -1;
|
|
}
|
|
|
|
/* Make sure we have a width and a height */
|
|
if ((BitmapInfoHeader->biWidth) && (BitmapInfoHeader->biHeight))
|
|
{
|
|
/* Do the BitBlt */
|
|
BitBlt(Left,
|
|
Top,
|
|
BitmapInfoHeader->biWidth,
|
|
BitmapInfoHeader->biHeight,
|
|
BitmapOffset,
|
|
BitmapInfoHeader->biBitCount,
|
|
Delta);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* @implemented
|
|
*/
|
|
VOID
|
|
NTAPI
|
|
VidScreenToBufferBlt(IN PUCHAR Buffer,
|
|
IN ULONG Left,
|
|
IN ULONG Top,
|
|
IN ULONG Width,
|
|
IN ULONG Height,
|
|
IN ULONG Delta)
|
|
{
|
|
ULONG Plane;
|
|
ULONG XDistance;
|
|
ULONG LeftDelta, RightDelta;
|
|
ULONG PixelOffset;
|
|
PUCHAR PixelPosition;
|
|
PUCHAR k, i;
|
|
PULONG m;
|
|
UCHAR Value, Value2;
|
|
UCHAR a;
|
|
ULONG b;
|
|
ULONG x, y;
|
|
|
|
/* Calculate total distance to copy on X */
|
|
XDistance = Left + Width - 1;
|
|
|
|
/* Start at plane 0 */
|
|
Plane = 0;
|
|
|
|
/* Calculate the 8-byte left and right deltas */
|
|
LeftDelta = Left & 7;
|
|
RightDelta = 8 - LeftDelta;
|
|
|
|
/* Clear the destination buffer */
|
|
RtlZeroMemory(Buffer, Delta * Height);
|
|
|
|
/* Calculate the pixel offset and convert the X distance into byte form */
|
|
PixelOffset = Top * 80 + (Left >> 3);
|
|
XDistance >>= 3;
|
|
|
|
/* Loop the 4 planes */
|
|
do
|
|
{
|
|
/* Set the current pixel position and reset buffer loop variable */
|
|
PixelPosition = (PUCHAR)(VgaBase + PixelOffset);
|
|
i = Buffer;
|
|
|
|
/* Set Mode 0 */
|
|
ReadWriteMode(0);
|
|
|
|
/* Set the current plane */
|
|
__outpw(VGA_BASE_IO_PORT + GRAPH_ADDRESS_PORT, (Plane << 8) | IND_READ_MAP);
|
|
|
|
/* Make sure we have a height */
|
|
if (Height > 0)
|
|
{
|
|
/* Start the outer Y loop */
|
|
y = Height;
|
|
do
|
|
{
|
|
/* Read the current value */
|
|
m = (PULONG)i;
|
|
Value = READ_REGISTER_UCHAR(PixelPosition);
|
|
|
|
/* Set Pixel Position loop variable */
|
|
k = PixelPosition + 1;
|
|
|
|
/* Check if we're still within bounds */
|
|
if (Left <= XDistance)
|
|
{
|
|
/* Start X Inner loop */
|
|
x = (XDistance - Left) + 1;
|
|
do
|
|
{
|
|
/* Read the current value */
|
|
Value2 = READ_REGISTER_UCHAR(k);
|
|
|
|
/* Increase pixel position */
|
|
k++;
|
|
|
|
/* Do the blt */
|
|
a = Value2 >> (UCHAR)RightDelta;
|
|
a |= Value << (UCHAR)LeftDelta;
|
|
b = lookup[a & 0xF];
|
|
a >>= 4;
|
|
b <<= 16;
|
|
b |= lookup[a];
|
|
|
|
/* Save new value to buffer */
|
|
*m |= (b << Plane);
|
|
|
|
/* Move to next destination location */
|
|
m++;
|
|
|
|
/* Write new value */
|
|
Value = Value2;
|
|
} while (--x);
|
|
}
|
|
|
|
/* Update pixel position */
|
|
PixelPosition += 80;
|
|
i += Delta;
|
|
} while (--y);
|
|
}
|
|
} while (++Plane < 4);
|
|
}
|
|
|
|
/*
|
|
* @implemented
|
|
*/
|
|
VOID
|
|
NTAPI
|
|
VidSolidColorFill(IN ULONG Left,
|
|
IN ULONG Top,
|
|
IN ULONG Right,
|
|
IN ULONG Bottom,
|
|
IN UCHAR Color)
|
|
{
|
|
ULONG rMask, lMask;
|
|
ULONG LeftOffset, RightOffset, Distance;
|
|
PUCHAR Offset;
|
|
ULONG i, j;
|
|
|
|
/* Get the left and right masks, shifts, and delta */
|
|
LeftOffset = Left >> 3;
|
|
lMask = (lMaskTable[Left & 0x7] << 8) | IND_BIT_MASK;
|
|
RightOffset = Right >> 3;
|
|
rMask = (rMaskTable[Right & 0x7] << 8) | IND_BIT_MASK;
|
|
Distance = RightOffset - LeftOffset;
|
|
|
|
/* 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);
|
|
|
|
/* Calculate pixel position for the read */
|
|
Offset = (PUCHAR)(VgaBase + (Top * 80) + LeftOffset);
|
|
|
|
/* Select the bitmask register and write the mask */
|
|
__outpw(VGA_BASE_IO_PORT + GRAPH_ADDRESS_PORT, (USHORT)lMask);
|
|
|
|
/* Check if the top coord is below the bottom one */
|
|
if (Top <= Bottom)
|
|
{
|
|
/* Start looping each line */
|
|
i = (Bottom - Top) + 1;
|
|
do
|
|
{
|
|
/* Read the previous value and add our color */
|
|
WRITE_REGISTER_UCHAR(Offset, READ_REGISTER_UCHAR(Offset) & Color);
|
|
|
|
/* Move to the next line */
|
|
Offset += 80;
|
|
} while (--i);
|
|
}
|
|
|
|
/* Check if we have a delta */
|
|
if (Distance)
|
|
{
|
|
/* Calculate new pixel position */
|
|
Offset = (PUCHAR)(VgaBase + (Top * 80) + RightOffset);
|
|
Distance--;
|
|
|
|
/* Select the bitmask register and write the mask */
|
|
__outpw(VGA_BASE_IO_PORT + GRAPH_ADDRESS_PORT, (USHORT)rMask);
|
|
|
|
/* Check if the top coord is below the bottom one */
|
|
if (Top <= Bottom)
|
|
{
|
|
/* Start looping each line */
|
|
i = (Bottom - Top) + 1;
|
|
do
|
|
{
|
|
/* Read the previous value and add our color */
|
|
WRITE_REGISTER_UCHAR(Offset,
|
|
READ_REGISTER_UCHAR(Offset) & Color);
|
|
|
|
/* Move to the next line */
|
|
Offset += 80;
|
|
} while (--i);
|
|
}
|
|
|
|
/* Check if we still have a delta */
|
|
if (Distance)
|
|
{
|
|
/* Calculate new pixel position */
|
|
Offset = (PUCHAR)(VgaBase + (Top * 80) + LeftOffset + 1);
|
|
|
|
/* Set the bitmask to 0xFF for all 4 planes */
|
|
__outpw(VGA_BASE_IO_PORT + GRAPH_ADDRESS_PORT, 0xFF08);
|
|
|
|
/* Check if the top coord is below the bottom one */
|
|
if (Top <= Bottom)
|
|
{
|
|
/* Start looping each line */
|
|
i = (Bottom - Top) + 1;
|
|
do
|
|
{
|
|
/* Loop the shift delta */
|
|
if (Distance > 0)
|
|
{
|
|
for (j = Distance; j; Offset++, j--)
|
|
{
|
|
/* Write the color */
|
|
WRITE_REGISTER_UCHAR(Offset, Color);
|
|
}
|
|
}
|
|
|
|
/* Update position in memory */
|
|
Offset += (80 - Distance);
|
|
} while (--i);
|
|
}
|
|
}
|
|
}
|
|
}
|