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windows-nt/Source/XPSP1/NT/drivers/video/ms/s3/disp/bltio.c

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2020-09-26 03:20:57 -05:00
/******************************Module*Header*******************************\
*
* *******************
* * GDI SAMPLE CODE *
* *******************
*
* Module Name: bltio.c
*
* Contains the low-level in/out blt functions. This module mirrors
* 'bltmm.c'.
*
* Hopefully, if you're basing your display driver on this code, to
* support all of DrvBitBlt and DrvCopyBits, you'll only have to implement
* the following routines. You shouldn't have to modify much in
* 'bitblt.c'. I've tried to make these routines as few, modular, simple,
* and efficient as I could, while still accelerating as many calls as
* possible that would be cost-effective in terms of performance wins
* versus size and effort.
*
* Note: In the following, 'relative' coordinates refers to coordinates
* that haven't yet had the offscreen bitmap (DFB) offset applied.
* 'Absolute' coordinates have had the offset applied. For example,
* we may be told to blt to (1, 1) of the bitmap, but the bitmap may
* be sitting in offscreen memory starting at coordinate (0, 768) --
* (1, 1) would be the 'relative' start coordinate, and (1, 769)
* would be the 'absolute' start coordinate'.
*
* Copyright (c) 1992-1998 Microsoft Corporation
*
\**************************************************************************/
#include "precomp.h"
/******************************Public*Routine******************************\
* VOID vIoImageTransferMm16
*
* Low-level routine for transferring a bitmap image via the data transfer
* register using 16 bit writes and memory-mapped I/O for the transfer,
* but I/O for the setup.
*
* NOTE: Upon entry, there must be 1 guaranteed free empty FIFO!
*
\**************************************************************************/
VOID vIoImageTransferMm16( // Type FNIMAGETRANSFER
PDEV* ppdev,
BYTE* pjSrc, // Source pointer
LONG lDelta, // Delta from start of scan to start of next
LONG cjSrc, // Number of bytes to be output on every scan
LONG cScans, // Number of scans
ULONG ulCmd) // Accelerator command - shouldn't include bus size
{
BYTE* pjMmBase;
LONG cwSrc;
ASSERTDD(cScans > 0, "Can't handle non-positive count of scans");
ASSERTDD((ulCmd & (BUS_SIZE_8 | BUS_SIZE_16 | BUS_SIZE_32)) == 0,
"Shouldn't specify bus size in command -- we handle that");
IO_GP_WAIT(ppdev);
IO_CMD(ppdev, ulCmd | BUS_SIZE_16);
CHECK_DATA_READY(ppdev);
pjMmBase = ppdev->pjMmBase;
cwSrc = (cjSrc) >> 1; // Floor
if (cjSrc & 1)
{
do {
if (cwSrc > 0)
{
MM_TRANSFER_WORD(ppdev, pjMmBase, pjSrc, cwSrc);
}
// Make sure we do only a byte read of the last odd byte
// in the scan so that we'll never read past the end of
// the bitmap:
MM_PIX_TRANS(ppdev, pjMmBase, *(pjSrc + cjSrc - 1));
pjSrc += lDelta;
} while (--cScans != 0);
}
else
{
do {
MM_TRANSFER_WORD(ppdev, pjMmBase, pjSrc, cwSrc);
pjSrc += lDelta;
} while (--cScans != 0);
}
CHECK_DATA_COMPLETE(ppdev);
}
/******************************Public*Routine******************************\
* VOID vIoImageTransferIo16
*
* Low-level routine for transferring a bitmap image via the data transfer
* register using entirely normal I/O.
*
* NOTE: Upon entry, there must be 1 guaranteed free empty FIFO!
*
\**************************************************************************/
VOID vIoImageTransferIo16( // Type FNIMAGETRANSFER
PDEV* ppdev,
BYTE* pjSrc, // Source pointer
LONG lDelta, // Delta from start of scan to start of next
LONG cjSrc, // Number of bytes to be output on every scan
LONG cScans, // Number of scans
ULONG ulCmd) // Accelerator command - shouldn't include bus size
{
LONG cWait;
LONG cwSrc;
volatile LONG i;
ASSERTDD(cScans > 0, "Can't handle non-positive count of scans");
ASSERTDD((ulCmd & (BUS_SIZE_8 | BUS_SIZE_16 | BUS_SIZE_32)) == 0,
"Shouldn't specify bus size in command -- we handle that");
IO_GP_WAIT(ppdev);
IO_CMD(ppdev, ulCmd | BUS_SIZE_16);
CHECK_DATA_READY(ppdev);
cwSrc = (cjSrc) >> 1; // Floor
// Old S3's in fast machines will drop data on monochrome transfers
// unless we insert a busy loop. '185' was the minimum value for which
// my DEC AXP 150 with an ISA 911 S3 stopped dropping data:
cWait = 0;
if ((ulCmd & MULTIPLE_PIXELS) &&
(ppdev->flCaps & CAPS_SLOW_MONO_EXPANDS))
{
cWait = 200; // Add some time to be safe
}
if (cjSrc & 1)
{
do {
if (cwSrc > 0)
{
IO_TRANSFER_WORD(ppdev, pjSrc, cwSrc);
}
// Make sure we do only a byte read of the last odd byte
// in the scan so that we'll never read past the end of
// the bitmap:
IO_PIX_TRANS(ppdev, *(pjSrc + cjSrc - 1));
pjSrc += lDelta;
for (i = cWait; i != 0; i--)
;
} while (--cScans != 0);
}
else
{
do {
IO_TRANSFER_WORD(ppdev, pjSrc, cwSrc);
pjSrc += lDelta;
for (i = cWait; i != 0; i--)
;
} while (--cScans != 0);
}
CHECK_DATA_COMPLETE(ppdev);
}
/******************************Public*Routine******************************\
* VOID vIoFillSolid
*
* Fills a list of rectangles with a solid colour.
*
\**************************************************************************/
VOID vIoFillSolid( // Type FNFILL
PDEV* ppdev,
LONG c, // Can't be zero
RECTL* prcl, // List of rectangles to be filled, in relative
// coordinates
ULONG rop4, // rop4
RBRUSH_COLOR rbc, // Drawing colour is rbc.iSolidColor
POINTL* pptlBrush) // Not used
{
ULONG ulHwForeMix;
ASSERTDD(c > 0, "Can't handle zero rectangles");
ulHwForeMix = gaulHwMixFromRop2[(rop4 >> 2) & 0xf];
// It's quite likely that we've just been called from GDI, so it's
// even more likely that the accelerator's graphics engine has been
// sitting around idle. Rather than doing a FIFO_WAIT(3) here and
// then a FIFO_WAIT(5) before outputing the actual rectangle,
// we can avoid an 'in' (which can be quite expensive, depending on
// the card) by doing a single FIFO_WAIT(8) right off the bat:
if (DEPTH32(ppdev))
{
IO_FIFO_WAIT(ppdev, 4);
IO_PIX_CNTL(ppdev, ALL_ONES);
IO_FRGD_MIX(ppdev, FOREGROUND_COLOR | ulHwForeMix);
IO_FRGD_COLOR32(ppdev, rbc.iSolidColor);
IO_FIFO_WAIT(ppdev, 5);
}
else
{
IO_FIFO_WAIT(ppdev, 8);
IO_PIX_CNTL(ppdev, ALL_ONES);
IO_FRGD_MIX(ppdev, FOREGROUND_COLOR | ulHwForeMix);
IO_FRGD_COLOR(ppdev, rbc.iSolidColor);
}
while(TRUE)
{
IO_CUR_X(ppdev, prcl->left);
IO_CUR_Y(ppdev, prcl->top);
IO_MAJ_AXIS_PCNT(ppdev, prcl->right - prcl->left - 1);
IO_MIN_AXIS_PCNT(ppdev, prcl->bottom - prcl->top - 1);
IO_CMD(ppdev, RECTANGLE_FILL | DRAWING_DIR_TBLRXM |
DRAW | DIR_TYPE_XY |
LAST_PIXEL_ON | MULTIPLE_PIXELS |
WRITE);
if (--c == 0)
return;
prcl++;
IO_FIFO_WAIT(ppdev, 5);
}
}
/******************************Public*Routine******************************\
* VOID vIoSlowPatRealize
*
* This routine transfers an 8x8 pattern to off-screen display memory, and
* duplicates it to make a 64x64 cached realization which is then used by
* vIoFillPatSlow as the basic building block for doing 'slow' pattern output
* via repeated screen-to-screen blts.
*
\**************************************************************************/
VOID vIoSlowPatRealize(
PDEV* ppdev,
RBRUSH* prb, // Points to brush realization structure
BOOL bTransparent) // FALSE for normal patterns; TRUE for
// patterns with a mask when the background
// mix is LEAVE_ALONE.
{
BRUSHENTRY* pbe;
LONG iBrushCache;
LONG x;
LONG y;
BYTE* pjPattern;
LONG cwPattern;
pbe = prb->pbe;
if ((pbe == NULL) || (pbe->prbVerify != prb))
{
// We have to allocate a new off-screen cache brush entry for
// the brush:
iBrushCache = ppdev->iBrushCache;
pbe = &ppdev->abe[iBrushCache];
iBrushCache++;
if (iBrushCache >= ppdev->cBrushCache)
iBrushCache = 0;
ppdev->iBrushCache = iBrushCache;
// Update our links:
pbe->prbVerify = prb;
prb->pbe = pbe;
}
// Load some pointer variables onto the stack, so that we don't have
// to keep dereferencing their pointers:
x = pbe->x;
y = pbe->y;
prb->bTransparent = bTransparent;
// I considered doing the colour expansion for 1bpp brushes in
// software, but by letting the hardware do it, we don't have
// to do as many OUTs to transfer the pattern.
if (prb->fl & RBRUSH_2COLOR)
{
// We're going to do a colour-expansion ('across the plane')
// bitblt of the 1bpp 8x8 pattern to the screen.
if (!bTransparent)
{
IO_FIFO_WAIT(ppdev, 4);
IO_FRGD_MIX(ppdev, FOREGROUND_COLOR | OVERPAINT);
IO_BKGD_MIX(ppdev, BACKGROUND_COLOR | OVERPAINT);
IO_FRGD_COLOR(ppdev, prb->ulForeColor);
IO_BKGD_COLOR(ppdev, prb->ulBackColor);
IO_FIFO_WAIT(ppdev, 5);
}
else
{
IO_FIFO_WAIT(ppdev, 7);
IO_FRGD_MIX(ppdev, LOGICAL_1);
IO_BKGD_MIX(ppdev, LOGICAL_0);
}
IO_PIX_CNTL(ppdev, CPU_DATA);
IO_ABS_CUR_X(ppdev, x);
IO_ABS_CUR_Y(ppdev, y);
IO_MAJ_AXIS_PCNT(ppdev, 7); // Brush is 8 wide
IO_MIN_AXIS_PCNT(ppdev, 7); // Brush is 8 high
IO_GP_WAIT(ppdev);
IO_CMD(ppdev, RECTANGLE_FILL | BUS_SIZE_16 | WAIT |
DRAWING_DIR_TBLRXM | DRAW | LAST_PIXEL_ON |
MULTIPLE_PIXELS | WRITE | BYTE_SWAP);
CHECK_DATA_READY(ppdev);
pjPattern = (BYTE*) &prb->aulPattern[0];
IO_TRANSFER_WORD_ALIGNED(ppdev, pjPattern, 8);
// Each word transferred comprises one row of the
// pattern, and there are 8 rows in the pattern
CHECK_DATA_COMPLETE(ppdev);
}
else
{
ASSERTDD(!bTransparent,
"Shouldn't have been asked for transparency with a non-1bpp brush");
IO_FIFO_WAIT(ppdev, 6);
IO_PIX_CNTL(ppdev, ALL_ONES);
IO_FRGD_MIX(ppdev, SRC_CPU_DATA | OVERPAINT);
IO_ABS_CUR_X(ppdev, x);
IO_ABS_CUR_Y(ppdev, y);
IO_MAJ_AXIS_PCNT(ppdev, 7); // Brush is 8 wide
IO_MIN_AXIS_PCNT(ppdev, 7); // Brush is 8 high
IO_GP_WAIT(ppdev);
IO_CMD(ppdev, RECTANGLE_FILL | BUS_SIZE_16| WAIT |
DRAWING_DIR_TBLRXM | DRAW | LAST_PIXEL_ON |
SINGLE_PIXEL | WRITE | BYTE_SWAP);
CHECK_DATA_READY(ppdev);
pjPattern = (BYTE*) &prb->aulPattern[0];
cwPattern = CONVERT_TO_BYTES((TOTAL_BRUSH_SIZE / 2), ppdev);
IO_TRANSFER_WORD_ALIGNED(ppdev, pjPattern, cwPattern);
CHECK_DATA_COMPLETE(ppdev);
}
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ
// <20>0<EFBFBD>2<EFBFBD>3 <20>4 <20>1<EFBFBD> We now have an 8x8 colour-expanded copy of
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ĵ the pattern sitting in off-screen memory,
// <20>5 <20> represented here by square '0'.
// <20> <20>
// <20> <20> We're now going to expand the pattern to
// <20> <20> 72x72 by repeatedly copying larger rectangles
// <20> <20> in the indicated order, and doing a 'rolling'
// <20> <20> blt to copy vertically.
// <20> <20>
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
// Copy '1':
IO_FIFO_WAIT(ppdev, 6);
IO_PIX_CNTL(ppdev, ALL_ONES);
IO_FRGD_MIX(ppdev, SRC_DISPLAY_MEMORY | OVERPAINT);
// Note that 'cur_x', 'maj_axis_pcnt' and 'min_axis_pcnt' are already
// correct.
IO_ABS_CUR_Y(ppdev, y);
IO_ABS_DEST_X(ppdev, x + 64);
IO_ABS_DEST_Y(ppdev, y);
IO_CMD(ppdev, BITBLT | DRAW | DIR_TYPE_XY | WRITE |
MULTIPLE_PIXELS | DRAWING_DIR_TBLRXM);
// Copy '2':
IO_FIFO_WAIT(ppdev, 7);
IO_ABS_DEST_X(ppdev, x + 8);
IO_ABS_DEST_Y(ppdev, y);
IO_CMD(ppdev, BITBLT | DRAW | DIR_TYPE_XY | WRITE |
MULTIPLE_PIXELS | DRAWING_DIR_TBLRXM);
// Copy '3':
IO_ABS_DEST_X(ppdev, x + 16);
IO_ABS_DEST_Y(ppdev, y);
IO_MAJ_AXIS_PCNT(ppdev, 15);
IO_CMD(ppdev, BITBLT | DRAW | DIR_TYPE_XY | WRITE |
MULTIPLE_PIXELS | DRAWING_DIR_TBLRXM);
// Copy '4':
IO_FIFO_WAIT(ppdev, 8);
IO_ABS_DEST_X(ppdev, x + 32);
IO_ABS_DEST_Y(ppdev, y);
IO_MAJ_AXIS_PCNT(ppdev, 31);
IO_CMD(ppdev, BITBLT | DRAW | DIR_TYPE_XY | WRITE |
MULTIPLE_PIXELS | DRAWING_DIR_TBLRXM);
// Copy '5':
IO_ABS_DEST_X(ppdev, x);
IO_MAJ_AXIS_PCNT(ppdev, 71);
IO_MIN_AXIS_PCNT(ppdev, 63);
IO_CMD(ppdev, BITBLT | DRAW | DIR_TYPE_XY | WRITE |
MULTIPLE_PIXELS | DRAWING_DIR_TBLRXM);
}
/******************************Public*Routine******************************\
* VOID vIoFillPatSlow
*
* Uses the screen-to-screen blting ability of the accelerator to fill a
* list of rectangles with a specified pattern. This routine is 'slow'
* merely in the sense that it doesn't use any built-in hardware pattern
* support that may be built into the accelerator.
*
\**************************************************************************/
VOID vIoFillPatSlow( // Type FNFILL
PDEV* ppdev,
LONG c, // Can't be zero
RECTL* prcl, // List of rectangles to be filled, in relative
// coordinates
ULONG rop4, // rop4
RBRUSH_COLOR rbc, // rbc.prb points to brush realization structure
POINTL* pptlBrush) // Pattern alignment
{
BOOL bTransparent;
ULONG ulHwForeMix;
BOOL bExponential;
LONG x;
LONG y;
LONG cxToGo;
LONG cyToGo;
LONG cxThis;
LONG cyThis;
LONG xOrg;
LONG yOrg;
LONG xBrush;
LONG yBrush;
LONG cyOriginal;
BRUSHENTRY* pbe; // Pointer to brush entry data, which is used
// for keeping track of the location and status
// of the pattern bits cached in off-screen
// memory
ASSERTDD(c > 0, "Can't handle zero rectangles");
ASSERTDD(rbc.prb->pbe != NULL,
"Unexpected Null pbe in vIoFillPatSlow");
ASSERTDD(!(ppdev->flCaps & CAPS_HW_PATTERNS),
"Shouldn't use slow patterns when can do hw patterns");
bTransparent = (((rop4 >> 8) & 0xff) != (rop4 & 0xff));
if ((rbc.prb->pbe->prbVerify != rbc.prb) ||
(rbc.prb->bTransparent != bTransparent))
{
vIoSlowPatRealize(ppdev, rbc.prb, bTransparent);
}
ASSERTDD(rbc.prb->bTransparent == bTransparent,
"Not realized with correct transparency");
ulHwForeMix = gaulHwMixFromRop2[(rop4 >> 2) & 0xf];
if (!bTransparent)
{
IO_FIFO_WAIT(ppdev, 2);
IO_PIX_CNTL(ppdev, ALL_ONES);
IO_FRGD_MIX(ppdev, SRC_DISPLAY_MEMORY | ulHwForeMix);
// We special case OVERPAINT mixes because we can implement
// an exponential fill: every blt will double the size of
// the current rectangle by using the portion of the pattern
// that has already been done for this rectangle as the source.
//
// Note that there's no point in also checking for LOGICAL_0
// or LOGICAL_1 because those will be taken care of by the
// solid fill routines, and I can't be bothered to check for
// NOTNEW:
bExponential = (ulHwForeMix == OVERPAINT);
}
else
{
IO_FIFO_WAIT(ppdev, 5);
IO_PIX_CNTL(ppdev, DISPLAY_MEMORY);
IO_FRGD_MIX(ppdev, FOREGROUND_COLOR | ulHwForeMix);
IO_BKGD_MIX(ppdev, BACKGROUND_COLOR | LEAVE_ALONE);
IO_FRGD_COLOR(ppdev, rbc.prb->ulForeColor);
IO_RD_MASK(ppdev, 1); // Pick a plane, any plane
bExponential = FALSE;
}
// Note that since we do our brush alignment calculations in
// relative coordinates, we should keep the brush origin in
// relative coordinates as well:
xOrg = pptlBrush->x;
yOrg = pptlBrush->y;
pbe = rbc.prb->pbe;
xBrush = pbe->x;
yBrush = pbe->y;
do {
x = prcl->left;
y = prcl->top;
cxToGo = prcl->right - x;
cyToGo = prcl->bottom - y;
if ((cxToGo <= SLOW_BRUSH_DIMENSION) &&
(cyToGo <= SLOW_BRUSH_DIMENSION))
{
IO_FIFO_WAIT(ppdev, 7);
IO_ABS_CUR_X(ppdev, ((x - xOrg) & 7) + xBrush);
IO_ABS_CUR_Y(ppdev, ((y - yOrg) & 7) + yBrush);
IO_DEST_X(ppdev, x);
IO_DEST_Y(ppdev, y);
IO_MAJ_AXIS_PCNT(ppdev, cxToGo - 1);
IO_MIN_AXIS_PCNT(ppdev, cyToGo - 1);
IO_CMD(ppdev, BITBLT | DRAW | DIR_TYPE_XY | WRITE |
MULTIPLE_PIXELS | DRAWING_DIR_TBLRXM);
}
else if (bExponential)
{
cyThis = SLOW_BRUSH_DIMENSION;
cyToGo -= cyThis;
if (cyToGo < 0)
cyThis += cyToGo;
cxThis = SLOW_BRUSH_DIMENSION;
cxToGo -= cxThis;
if (cxToGo < 0)
cxThis += cxToGo;
IO_FIFO_WAIT(ppdev, 7);
IO_MAJ_AXIS_PCNT(ppdev, cxThis - 1);
IO_MIN_AXIS_PCNT(ppdev, cyThis - 1);
IO_DEST_X(ppdev, x);
IO_DEST_Y(ppdev, y);
IO_ABS_CUR_X(ppdev, ((x - xOrg) & 7) + xBrush);
IO_ABS_CUR_Y(ppdev, ((y - yOrg) & 7) + yBrush);
IO_CMD(ppdev, BITBLT | DRAW | DIR_TYPE_XY | WRITE |
MULTIPLE_PIXELS | DRAWING_DIR_TBLRXM);
IO_FIFO_WAIT(ppdev, 2);
IO_CUR_X(ppdev, x);
IO_CUR_Y(ppdev, y);
x += cxThis;
while (cxToGo > 0)
{
// First, expand out to the right, doubling our size
// each time:
cxToGo -= cxThis;
if (cxToGo < 0)
cxThis += cxToGo;
IO_FIFO_WAIT(ppdev, 4);
IO_MAJ_AXIS_PCNT(ppdev, cxThis - 1);
IO_DEST_X(ppdev, x);
IO_DEST_Y(ppdev, y);
IO_CMD(ppdev, BITBLT | DRAW | DIR_TYPE_XY | WRITE |
MULTIPLE_PIXELS | DRAWING_DIR_TBLRXM);
x += cxThis;
cxThis *= 2;
}
if (cyToGo > 0)
{
// Now do a 'rolling blt' to pattern the rest vertically:
IO_FIFO_WAIT(ppdev, 4);
IO_DEST_X(ppdev, prcl->left);
IO_MAJ_AXIS_PCNT(ppdev, prcl->right - prcl->left - 1);
IO_MIN_AXIS_PCNT(ppdev, cyToGo - 1);
IO_CMD(ppdev, BITBLT | DRAW | DIR_TYPE_XY | WRITE |
MULTIPLE_PIXELS | DRAWING_DIR_TBLRXM);
}
}
else
{
// We handle arbitrary mixes simply by repeatedly tiling
// our cached pattern over the entire rectangle:
IO_FIFO_WAIT(ppdev, 2);
IO_ABS_CUR_X(ppdev, ((x - xOrg) & 7) + xBrush);
IO_ABS_CUR_Y(ppdev, ((y - yOrg) & 7) + yBrush);
cyOriginal = cyToGo; // Have to remember for later...
do {
cxThis = SLOW_BRUSH_DIMENSION;
cxToGo -= cxThis;
if (cxToGo < 0)
cxThis += cxToGo;
IO_FIFO_WAIT(ppdev, 3);
IO_MAJ_AXIS_PCNT(ppdev, cxThis - 1);
IO_DEST_Y(ppdev, y);
IO_DEST_X(ppdev, x);
x += cxThis; // Get ready for next column
cyToGo = cyOriginal; // Have to reset for each new column
do {
cyThis = SLOW_BRUSH_DIMENSION;
cyToGo -= cyThis;
if (cyToGo < 0)
cyThis += cyToGo;
IO_FIFO_WAIT(ppdev, 2);
IO_MIN_AXIS_PCNT(ppdev, cyThis - 1);
IO_CMD(ppdev, BITBLT | DRAW | DIR_TYPE_XY | WRITE |
MULTIPLE_PIXELS | DRAWING_DIR_TBLRXM);
} while (cyToGo > 0);
} while (cxToGo > 0);
}
prcl++;
} while (--c != 0);
}
/******************************Public*Routine******************************\
* VOID vIoFastPatRealize
*
* This routine transfers an 8x8 pattern to off-screen display memory,
* so that it can be used by the S3 pattern hardware.
*
\**************************************************************************/
VOID vIoFastPatRealize( // Type FNFASTPATREALIZE
PDEV* ppdev,
RBRUSH* prb, // Points to brush realization structure
POINTL* pptlBrush, // Brush origin for aligning realization
BOOL bTransparent) // FALSE for normal patterns; TRUE for
// patterns with a mask when the background
// mix is LEAVE_ALONE.
{
BRUSHENTRY* pbe;
LONG iBrushCache;
LONG x;
LONG y;
LONG i;
LONG xShift;
LONG yShift;
BYTE* pjSrc;
BYTE* pjDst;
LONG cjLeft;
LONG cjRight;
BYTE* pjPattern;
LONG cwPattern;
ULONG aulBrush[TOTAL_BRUSH_SIZE];
// Temporary buffer for aligning brush. Declared
// as an array of ULONGs to get proper dword
// alignment. Also leaves room for brushes that
// are up to 32bpp. Note: this takes up 1/4k!
pbe = prb->pbe;
if ((pbe == NULL) || (pbe->prbVerify != prb))
{
// We have to allocate a new off-screen cache brush entry for
// the brush:
iBrushCache = ppdev->iBrushCache;
pbe = &ppdev->abe[iBrushCache];
iBrushCache++;
if (iBrushCache >= ppdev->cBrushCache)
iBrushCache = 0;
ppdev->iBrushCache = iBrushCache;
// Update our links:
pbe->prbVerify = prb;
prb->pbe = pbe;
}
// Load some variables onto the stack, so that we don't have to keep
// dereferencing their pointers:
x = pbe->x;
y = pbe->y;
// Because we handle only 8x8 brushes, it is easy to compute the
// number of pels by which we have to rotate the brush pattern
// right and down. Note that if we were to handle arbitrary sized
// patterns, this calculation would require a modulus operation.
//
// The brush is aligned in absolute coordinates, so we have to add
// in the surface offset:
xShift = pptlBrush->x + ppdev->xOffset;
yShift = pptlBrush->y + ppdev->yOffset;
prb->ptlBrushOrg.x = xShift; // We have to remember the alignment
prb->ptlBrushOrg.y = yShift; // that we used for caching (we check
// this when we go to see if a brush's
// cache entry is still valid)
xShift &= 7; // Rotate pattern 'xShift' pels right
yShift &= 7; // Rotate pattern 'yShift' pels down
prb->bTransparent = bTransparent;
// I considered doing the colour expansion for 1bpp brushes in
// software, but by letting the hardware do it, we don't have
// to do as many OUTs to transfer the pattern.
if (prb->fl & RBRUSH_2COLOR)
{
// We're going to do a colour-expansion ('across the plane')
// bitblt of the 1bpp 8x8 pattern to the screen. But first
// we'll align it properly by copying it to a temporary buffer
// (which we'll conveniently pack word aligned so that we can do a
// REP OUTSW...)
pjSrc = (BYTE*) &prb->aulPattern[0]; // Copy from the start of the
// brush buffer
pjDst = (BYTE*) &aulBrush[0]; // Copy to our temp buffer
pjDst += yShift * sizeof(WORD); // starting yShift rows down
i = 8 - yShift; // for 8 - yShift rows
do {
*pjDst = (*pjSrc >> xShift) | (*pjSrc << (8 - xShift));
pjDst += sizeof(WORD); // Destination is word packed
pjSrc += sizeof(WORD); // Source is word aligned too
} while (--i != 0);
pjDst -= 8 * sizeof(WORD); // Move to the beginning of the source
ASSERTDD(pjDst == (BYTE*) &aulBrush[0], "pjDst not back at start");
for (; yShift != 0; yShift--)
{
*pjDst = (*pjSrc >> xShift) | (*pjSrc << (8 - xShift));
pjDst += sizeof(WORD); // Destination is word packed
pjSrc += sizeof(WORD); // Source is word aligned too
}
if (bTransparent)
{
IO_FIFO_WAIT(ppdev, 3);
IO_PIX_CNTL(ppdev, CPU_DATA);
IO_FRGD_MIX(ppdev, LOGICAL_1);
IO_BKGD_MIX(ppdev, LOGICAL_0);
}
else
{
if (DEPTH32(ppdev))
{
IO_FIFO_WAIT(ppdev, 7);
IO_PIX_CNTL(ppdev, CPU_DATA);
IO_FRGD_MIX(ppdev, FOREGROUND_COLOR | OVERPAINT);
IO_BKGD_MIX(ppdev, BACKGROUND_COLOR | OVERPAINT);
IO_FRGD_COLOR32(ppdev, prb->ulForeColor);
IO_BKGD_COLOR32(ppdev, prb->ulBackColor);
}
else
{
IO_FIFO_WAIT(ppdev, 5);
IO_PIX_CNTL(ppdev, CPU_DATA);
IO_FRGD_MIX(ppdev, FOREGROUND_COLOR | OVERPAINT);
IO_BKGD_MIX(ppdev, BACKGROUND_COLOR | OVERPAINT);
IO_FRGD_COLOR(ppdev, prb->ulForeColor);
IO_BKGD_COLOR(ppdev, prb->ulBackColor);
}
}
IO_FIFO_WAIT(ppdev, 4);
IO_ABS_CUR_X(ppdev, x);
IO_ABS_CUR_Y(ppdev, y);
IO_MAJ_AXIS_PCNT(ppdev, 7); // Brush is 8 wide
IO_MIN_AXIS_PCNT(ppdev, 7); // Brush is 8 high
IO_GP_WAIT(ppdev);
IO_CMD(ppdev, RECTANGLE_FILL | BUS_SIZE_16 | WAIT |
DRAWING_DIR_TBLRXM | DRAW | LAST_PIXEL_ON |
MULTIPLE_PIXELS | WRITE | BYTE_SWAP);
CHECK_DATA_READY(ppdev);
pjPattern = (BYTE*) &aulBrush[0];
IO_TRANSFER_WORD_ALIGNED(ppdev, pjPattern, 8);
// Each word transferred
// comprises one row of the
// pattern, and there are
// 8 rows in the pattern
CHECK_DATA_COMPLETE(ppdev);
}
else
{
ASSERTDD(!bTransparent,
"Shouldn't have been asked for transparency with a non-1bpp brush");
// We're going to do a straight ('through the plane') bitblt
// of the Xbpp 8x8 pattern to the screen. But first we'll align
// it properly by copying it to a temporary buffer:
cjLeft = CONVERT_TO_BYTES(xShift, ppdev); // Number of bytes pattern
// is shifted to the right
cjRight = CONVERT_TO_BYTES(8, ppdev) - cjLeft; // Number of bytes pattern
// is shifted to the left
pjSrc = (BYTE*) &prb->aulPattern[0]; // Copy from brush buffer
pjDst = (BYTE*) &aulBrush[0]; // Copy to our temp buffer
pjDst += yShift * CONVERT_TO_BYTES(8, ppdev); // starting yShift rows
i = 8 - yShift; // down for 8 - yShift rows
do {
RtlCopyMemory(pjDst + cjLeft, pjSrc, cjRight);
RtlCopyMemory(pjDst, pjSrc + cjRight, cjLeft);
pjDst += cjLeft + cjRight;
pjSrc += cjLeft + cjRight;
} while (--i != 0);
pjDst = (BYTE*) &aulBrush[0]; // Move to the beginning of destination
for (; yShift != 0; yShift--)
{
RtlCopyMemory(pjDst + cjLeft, pjSrc, cjRight);
RtlCopyMemory(pjDst, pjSrc + cjRight, cjLeft);
pjDst += cjLeft + cjRight;
pjSrc += cjLeft + cjRight;
}
IO_FIFO_WAIT(ppdev, 6);
IO_PIX_CNTL(ppdev, ALL_ONES);
IO_FRGD_MIX(ppdev, SRC_CPU_DATA | OVERPAINT);
IO_ABS_CUR_X(ppdev, x);
IO_ABS_CUR_Y(ppdev, y);
IO_MAJ_AXIS_PCNT(ppdev, 7); // Brush is 8 wide
IO_MIN_AXIS_PCNT(ppdev, 7); // Brush is 8 high
IO_GP_WAIT(ppdev);
IO_CMD(ppdev, RECTANGLE_FILL | BUS_SIZE_16| WAIT |
DRAWING_DIR_TBLRXM | DRAW | LAST_PIXEL_ON |
SINGLE_PIXEL | WRITE | BYTE_SWAP);
CHECK_DATA_READY(ppdev);
pjPattern = (BYTE*) &aulBrush[0];
cwPattern = CONVERT_TO_BYTES((TOTAL_BRUSH_SIZE / 2), ppdev);
IO_TRANSFER_WORD_ALIGNED(ppdev, pjPattern, cwPattern);
CHECK_DATA_COMPLETE(ppdev);
}
}
/******************************Public*Routine******************************\
* VOID vIoFillPatFast
*
* This routine uses the S3 pattern hardware to draw a patterned list of
* rectangles.
*
\**************************************************************************/
VOID vIoFillPatFast( // Type FNFILL
PDEV* ppdev,
LONG c, // Can't be zero
RECTL* prcl, // List of rectangles to be filled, in relative
// coordinates
ULONG rop4, // rop4
RBRUSH_COLOR rbc, // rbc.prb points to brush realization structure
POINTL* pptlBrush) // Pattern alignment
{
BOOL bTransparent;
ULONG ulHwForeMix;
BRUSHENTRY* pbe; // Pointer to brush entry data, which is used
// for keeping track of the location and status
// of the pattern bits cached in off-screen
// memory
ASSERTDD(c > 0, "Can't handle zero rectangles");
ASSERTDD(ppdev->flCaps & CAPS_HW_PATTERNS,
"Shouldn't use fast patterns when can't do hw patterns");
bTransparent = (((rop4 >> 8) & 0xff) != (rop4 & 0xff));
// The S3's pattern hardware requires that we keep an aligned copy
// of the brush in off-screen memory. We have to update this
// realization if any of the following are true:
//
// 1) The brush alignment has changed;
// 2) The off-screen location we thought we had reserved for our
// realization got overwritten by a different pattern;
// 3) We had realized the pattern to do transparent hatches, but
// we're now being asked to do an opaque pattern, or vice
// versa (since we use different realizations for transparent
// vs. opaque patterns).
//
// To handle the initial realization of a pattern, we're a little
// tricky in order to save an 'if' in the following expression. In
// DrvRealizeBrush, we set 'prb->ptlBrushOrg.x' to be 0x80000000 (a
// very negative number), which is guaranteed not to equal 'pptlBrush->x
// + ppdev->xOffset'. So our check for brush alignment will also
// handle the initialization case (note that this check must occur
// *before* dereferencing 'prb->pbe' because that pointer will be
// NULL for a new pattern).
if ((rbc.prb->ptlBrushOrg.x != pptlBrush->x + ppdev->xOffset) ||
(rbc.prb->ptlBrushOrg.y != pptlBrush->y + ppdev->yOffset) ||
(rbc.prb->pbe->prbVerify != rbc.prb) ||
(rbc.prb->bTransparent != bTransparent))
{
vIoFastPatRealize(ppdev, rbc.prb, pptlBrush, bTransparent);
}
else if (ppdev->flCaps & CAPS_RE_REALIZE_PATTERN)
{
// The initial revs of the Vision chips have a bug where, if
// we have not just drawn the pattern to off-screen memory,
// we have to draw some sort of 1x8 rectangle before using
// the pattern hardware (note that a LEAVE_ALONE rop will not
// work).
IO_FIFO_WAIT(ppdev, 7);
IO_PIX_CNTL(ppdev, ALL_ONES);
IO_FRGD_MIX(ppdev, SRC_DISPLAY_MEMORY | OVERPAINT);
IO_ABS_CUR_X(ppdev, ppdev->ptlReRealize.x);
IO_ABS_CUR_Y(ppdev, ppdev->ptlReRealize.y);
IO_MAJ_AXIS_PCNT(ppdev, 0);
IO_MIN_AXIS_PCNT(ppdev, 7);
IO_CMD(ppdev, RECTANGLE_FILL | DRAWING_DIR_TBLRXM |
DRAW | DIR_TYPE_XY |
LAST_PIXEL_ON | MULTIPLE_PIXELS |
WRITE);
}
ASSERTDD(rbc.prb->bTransparent == bTransparent,
"Not realized with correct transparency");
pbe = rbc.prb->pbe;
ulHwForeMix = gaulHwMixFromRop2[(rop4 >> 2) & 0xf];
if (!bTransparent)
{
IO_FIFO_WAIT(ppdev, 4);
IO_ABS_CUR_X(ppdev, pbe->x);
IO_ABS_CUR_Y(ppdev, pbe->y);
IO_PIX_CNTL(ppdev, ALL_ONES);
IO_FRGD_MIX(ppdev, SRC_DISPLAY_MEMORY | ulHwForeMix);
}
else
{
if (DEPTH32(ppdev))
{
IO_FIFO_WAIT(ppdev, 4);
IO_FRGD_COLOR32(ppdev, rbc.prb->ulForeColor);
IO_RD_MASK32(ppdev, 1); // Pick a plane, any plane
IO_FIFO_WAIT(ppdev, 5);
}
else
{
IO_FIFO_WAIT(ppdev, 7);
IO_FRGD_COLOR(ppdev, rbc.prb->ulForeColor);
IO_RD_MASK(ppdev, 1); // Pick a plane, any plane
}
IO_ABS_CUR_X(ppdev, pbe->x);
IO_ABS_CUR_Y(ppdev, pbe->y);
IO_PIX_CNTL(ppdev, DISPLAY_MEMORY);
IO_FRGD_MIX(ppdev, FOREGROUND_COLOR | ulHwForeMix);
IO_BKGD_MIX(ppdev, BACKGROUND_COLOR | LEAVE_ALONE);
}
do {
IO_FIFO_WAIT(ppdev, 5);
IO_DEST_X(ppdev, prcl->left);
IO_DEST_Y(ppdev, prcl->top);
IO_MAJ_AXIS_PCNT(ppdev, prcl->right - prcl->left - 1);
IO_MIN_AXIS_PCNT(ppdev, prcl->bottom - prcl->top - 1);
IO_CMD(ppdev, PATTERN_FILL | BYTE_SWAP | DRAWING_DIR_TBLRXM |
DRAW | WRITE);
prcl++;
} while (--c != 0);
}
/******************************Public*Routine******************************\
* VOID vIoXfer1bpp
*
* This routine colour expands a monochrome bitmap, possibly with different
* Rop2's for the foreground and background. It will be called in the
* following cases:
*
* 1) To colour-expand the monochrome text buffer for the vFastText routine.
* 2) To blt a 1bpp source with a simple Rop2 between the source and
* destination.
* 3) To blt a true Rop3 when the source is a 1bpp bitmap that expands to
* white and black, and the pattern is a solid colour.
* 4) To handle a true Rop4 that works out to be Rop2's between the pattern
* and destination.
*
* Needless to say, making this routine fast can leverage a lot of
* performance.
*
\**************************************************************************/
VOID vIoXfer1bpp( // Type FNXFER
PDEV* ppdev,
LONG c, // Count of rectangles, can't be zero
RECTL* prcl, // List of destination rectangles, in relative
// coordinates
ROP4 rop4, // rop4
SURFOBJ* psoSrc, // Source surface
POINTL* pptlSrc, // Original unclipped source point
RECTL* prclDst, // Original unclipped destination rectangle
XLATEOBJ* pxlo) // Translate that provides colour-expansion information
{
ULONG ulHwForeMix;
ULONG ulHwBackMix;
LONG dxSrc;
LONG dySrc;
LONG cx;
LONG cy;
LONG lSrcDelta;
BYTE* pjSrcScan0;
BYTE* pjSrc;
LONG cjSrc;
LONG xLeft;
LONG yTop;
LONG xBias;
ASSERTDD(c > 0, "Can't handle zero rectangles");
ASSERTDD(pptlSrc != NULL && psoSrc != NULL, "Can't have NULL sources");
ASSERTDD(((((rop4 & 0xff00) >> 8) == (rop4 & 0xff)) || (rop4 == 0xaacc)),
"Expect weird rops only when opaquing");
// Note that only our text routine calls us with a '0xaacc' rop:
ulHwForeMix = gaulHwMixFromRop2[rop4 & 0xf];
ulHwBackMix = (rop4 != 0xaacc) ? ulHwForeMix : LEAVE_ALONE;
if (DEPTH32(ppdev))
{
IO_FIFO_WAIT(ppdev, 7);
IO_PIX_CNTL(ppdev, CPU_DATA);
IO_FRGD_MIX(ppdev, FOREGROUND_COLOR | ulHwForeMix);
IO_BKGD_MIX(ppdev, BACKGROUND_COLOR | ulHwBackMix);
IO_FRGD_COLOR32(ppdev, pxlo->pulXlate[1]);
IO_BKGD_COLOR32(ppdev, pxlo->pulXlate[0]);
}
else
{
IO_FIFO_WAIT(ppdev, 5);
IO_PIX_CNTL(ppdev, CPU_DATA);
IO_FRGD_MIX(ppdev, FOREGROUND_COLOR | ulHwForeMix);
IO_BKGD_MIX(ppdev, BACKGROUND_COLOR | ulHwBackMix);
IO_FRGD_COLOR(ppdev, pxlo->pulXlate[1]);
IO_BKGD_COLOR(ppdev, pxlo->pulXlate[0]);
}
dxSrc = pptlSrc->x - prclDst->left;
dySrc = pptlSrc->y - prclDst->top; // Add to destination to get source
lSrcDelta = psoSrc->lDelta;
pjSrcScan0 = psoSrc->pvScan0;
do {
IO_FIFO_WAIT(ppdev, 5);
// We'll byte align to the source, but do word transfers
// (implying that we may be doing unaligned reads from the
// source). We do this because it may reduce the total
// number of word outs/writes that we'll have to do to the
// display:
yTop = prcl->top;
xLeft = prcl->left;
xBias = (xLeft + dxSrc) & 7; // This is the byte-align bias
if (xBias != 0)
{
// We could either align in software or use the hardware to do
// it. We'll use the hardware; the cost we pay is the time spent
// setting and resetting one scissors register:
IO_SCISSORS_L(ppdev, xLeft);
xLeft -= xBias;
}
cx = prcl->right - xLeft;
cy = prcl->bottom - yTop;
IO_CUR_X(ppdev, xLeft);
IO_CUR_Y(ppdev, yTop);
IO_MAJ_AXIS_PCNT(ppdev, cx - 1);
IO_MIN_AXIS_PCNT(ppdev, cy - 1);
cjSrc = (cx + 7) / 8; // # bytes to transfer
pjSrc = pjSrcScan0 + (yTop + dySrc) * lSrcDelta
+ (xLeft + dxSrc) / 8;
// Start is byte aligned (note
// that we don't have to add
// xBias)
ppdev->pfnImageTransfer(ppdev, pjSrc, lSrcDelta, cjSrc, cy,
(RECTANGLE_FILL | WAIT | DRAWING_DIR_TBLRXM |
DRAW | LAST_PIXEL_ON | MULTIPLE_PIXELS |
WRITE | BYTE_SWAP));
if (xBias != 0)
{
IO_FIFO_WAIT(ppdev, 1);
IO_ABS_SCISSORS_L(ppdev, 0); // Reset the clipping if we used it
}
prcl++;
} while (--c != 0);
}
/******************************Public*Routine******************************\
* VOID vIoXfer4bpp
*
* Does a 4bpp transfer from a bitmap to the screen.
*
* NOTE: The screen must be 8bpp for this function to be called!
*
* The reason we implement this is that a lot of resources are kept as 4bpp,
* and used to initialize DFBs, some of which we of course keep off-screen.
*
\**************************************************************************/
// XLATE_BUFFER_SIZE defines the size of the stack-based buffer we use
// for doing the translate. Note that in general stack buffers should
// be kept as small as possible. The OS guarantees us only 8k for stack
// from GDI down to the display driver in low memory situations; if we
// ask for more, we'll access violate. Note also that at any time the
// stack buffer cannot be larger than a page (4k) -- otherwise we may
// miss touching the 'guard page' and access violate then too.
#define XLATE_BUFFER_SIZE 256
VOID vIoXfer4bpp( // Type FNXFER
PDEV* ppdev,
LONG c, // Count of rectangles, can't be zero
RECTL* prcl, // List of destination rectangles, in relative
// coordinates
ULONG rop4, // rop4
SURFOBJ* psoSrc, // Source surface
POINTL* pptlSrc, // Original unclipped source point
RECTL* prclDst, // Original unclipped destination rectangle
XLATEOBJ* pxlo) // Translate that provides colour-expansion information
{
LONG dx;
LONG dy;
LONG cx;
LONG cy;
LONG lSrcDelta;
BYTE* pjSrcScan0;
BYTE* pjScan;
BYTE* pjSrc;
BYTE* pjDst;
LONG cxThis;
LONG cxToGo;
LONG xSrc;
LONG iLoop;
BYTE jSrc;
ULONG* pulXlate;
LONG cwThis;
BYTE* pjBuf;
BYTE ajBuf[XLATE_BUFFER_SIZE];
ASSERTDD(ppdev->iBitmapFormat == BMF_8BPP, "Screen must be 8bpp");
ASSERTDD(psoSrc->iBitmapFormat == BMF_4BPP, "Source must be 4bpp");
ASSERTDD(c > 0, "Can't handle zero rectangles");
ASSERTDD(((rop4 & 0xff00) >> 8) == (rop4 & 0xff),
"Expect only a rop2");
dx = pptlSrc->x - prclDst->left;
dy = pptlSrc->y - prclDst->top; // Add to destination to get source
lSrcDelta = psoSrc->lDelta;
pjSrcScan0 = psoSrc->pvScan0;
IO_FIFO_WAIT(ppdev, 6);
IO_PIX_CNTL(ppdev, ALL_ONES);
IO_FRGD_MIX(ppdev, SRC_CPU_DATA | gaulHwMixFromRop2[rop4 & 0xf]);
while(TRUE)
{
cx = prcl->right - prcl->left;
cy = prcl->bottom - prcl->top;
IO_CUR_X(ppdev, prcl->left);
IO_CUR_Y(ppdev, prcl->top);
IO_MAJ_AXIS_PCNT(ppdev, cx - 1);
IO_MIN_AXIS_PCNT(ppdev, cy - 1);
pulXlate = pxlo->pulXlate;
xSrc = prcl->left + dx;
pjScan = pjSrcScan0 + (prcl->top + dy) * lSrcDelta + (xSrc >> 1);
IO_GP_WAIT(ppdev);
IO_CMD(ppdev, RECTANGLE_FILL | BUS_SIZE_16| WAIT |
DRAWING_DIR_TBLRXM | DRAW | LAST_PIXEL_ON |
SINGLE_PIXEL | WRITE | BYTE_SWAP);
CHECK_DATA_READY(ppdev);
do {
pjSrc = pjScan;
cxToGo = cx; // # of pels per scan in 4bpp source
do {
cxThis = XLATE_BUFFER_SIZE;
// We can handle XLATE_BUFFER_SIZE number
// of pels in this xlate batch
cxToGo -= cxThis; // cxThis will be the actual number of
// pels we'll do in this xlate batch
if (cxToGo < 0)
cxThis += cxToGo;
pjDst = ajBuf; // Points to our temporary batch buffer
// We handle alignment ourselves because it's easy to
// do, rather than pay the cost of setting/resetting
// the scissors register:
if (xSrc & 1)
{
// When unaligned, we have to be careful not to read
// past the end of the 4bpp bitmap (that could
// potentially cause us to access violate):
iLoop = cxThis >> 1; // Each loop handles 2 pels;
// we'll handle odd pel
// separately
jSrc = *pjSrc;
while (iLoop-- != 0)
{
*pjDst++ = (BYTE) pulXlate[jSrc & 0xf];
jSrc = *(++pjSrc);
*pjDst++ = (BYTE) pulXlate[jSrc >> 4];
}
if (cxThis & 1)
*pjDst = (BYTE) pulXlate[jSrc & 0xf];
}
else
{
iLoop = (cxThis + 1) >> 1; // Each loop handles 2 pels
do {
jSrc = *pjSrc++;
*pjDst++ = (BYTE) pulXlate[jSrc >> 4];
*pjDst++ = (BYTE) pulXlate[jSrc & 0xf];
} while (--iLoop != 0);
}
// The number of bytes we'll transfer is equal to the number
// of pels we've processed in the batch. Since we're
// transferring words, we have to round up to get the word
// count:
cwThis = (cxThis + 1) >> 1;
pjBuf = ajBuf;
IO_TRANSFER_WORD_ALIGNED(ppdev, pjBuf, cwThis);
} while (cxToGo > 0);
pjScan += lSrcDelta; // Advance to next source scan. Note
// that we could have computed the
// value to advance 'pjSrc' directly,
// but this method is less
// error-prone.
} while (--cy != 0);
CHECK_DATA_COMPLETE(ppdev);
if (--c == 0)
return;
prcl++;
IO_FIFO_WAIT(ppdev, 4);
}
}
/******************************Public*Routine******************************\
* VOID vIoXferNative
*
* Transfers a bitmap that is the same colour depth as the display to
* the screen via the data transfer register, with no translation.
*
\**************************************************************************/
VOID vIoXferNative( // Type FNXFER
PDEV* ppdev,
LONG c, // Count of rectangles, can't be zero
RECTL* prcl, // Array of relative coordinates destination rectangles
ULONG rop4, // rop4
SURFOBJ* psoSrc, // Source surface
POINTL* pptlSrc, // Original unclipped source point
RECTL* prclDst, // Original unclipped destination rectangle
XLATEOBJ* pxlo) // Not used
{
LONG dx;
LONG dy;
LONG cx;
LONG cy;
LONG lSrcDelta;
BYTE* pjSrcScan0;
BYTE* pjSrc;
LONG cjSrc;
ASSERTDD((pxlo == NULL) || (pxlo->flXlate & XO_TRIVIAL),
"Can handle trivial xlate only");
ASSERTDD(psoSrc->iBitmapFormat == ppdev->iBitmapFormat,
"Source must be same colour depth as screen");
ASSERTDD(c > 0, "Can't handle zero rectangles");
ASSERTDD(((rop4 & 0xff00) >> 8) == (rop4 & 0xff),
"Expect only a rop2");
dx = pptlSrc->x - prclDst->left;
dy = pptlSrc->y - prclDst->top; // Add to destination to get source
lSrcDelta = psoSrc->lDelta;
pjSrcScan0 = psoSrc->pvScan0;
IO_FIFO_WAIT(ppdev, 6);
IO_PIX_CNTL(ppdev, ALL_ONES);
IO_FRGD_MIX(ppdev, SRC_CPU_DATA | gaulHwMixFromRop2[rop4 & 0xf]);
while(TRUE)
{
IO_CUR_X(ppdev, prcl->left);
IO_CUR_Y(ppdev, prcl->top);
cx = prcl->right - prcl->left;
IO_MAJ_AXIS_PCNT(ppdev, cx - 1);
cy = prcl->bottom - prcl->top;
IO_MIN_AXIS_PCNT(ppdev, cy - 1);
cjSrc = CONVERT_TO_BYTES(cx, ppdev);
pjSrc = pjSrcScan0 + (prcl->top + dy) * lSrcDelta
+ CONVERT_TO_BYTES((prcl->left + dx), ppdev);
ppdev->pfnImageTransfer(ppdev, pjSrc, lSrcDelta, cjSrc, cy,
(RECTANGLE_FILL | WAIT | DRAWING_DIR_TBLRXM |
DRAW | LAST_PIXEL_ON | SINGLE_PIXEL |
WRITE | BYTE_SWAP));
if (--c == 0)
return;
prcl++;
IO_FIFO_WAIT(ppdev, 4);
}
}
/******************************Public*Routine******************************\
* VOID vIoCopyBlt
*
* Does a screen-to-screen blt of a list of rectangles.
*
\**************************************************************************/
VOID vIoCopyBlt( // Type FNCOPY
PDEV* ppdev,
LONG c, // Can't be zero
RECTL* prcl, // Array of relative coordinates destination rectangles
ULONG rop4, // rop4
POINTL* pptlSrc, // Original unclipped source point
RECTL* prclDst) // Original unclipped destination rectangle
{
LONG dx;
LONG dy; // Add delta to destination to get source
LONG cx;
LONG cy; // Size of current rectangle - 1
ASSERTDD(c > 0, "Can't handle zero rectangles");
ASSERTDD(((rop4 & 0xff00) >> 8) == (rop4 & 0xff),
"Expect only a rop2");
IO_FIFO_WAIT(ppdev, 2);
IO_FRGD_MIX(ppdev, SRC_DISPLAY_MEMORY | gaulHwMixFromRop2[rop4 & 0xf]);
IO_PIX_CNTL(ppdev, ALL_ONES);
dx = pptlSrc->x - prclDst->left;
dy = pptlSrc->y - prclDst->top;
// The accelerator may not be as fast at doing right-to-left copies, so
// only do them when the rectangles truly overlap:
if (!OVERLAP(prclDst, pptlSrc))
goto Top_Down_Left_To_Right;
if (prclDst->top <= pptlSrc->y)
{
if (prclDst->left <= pptlSrc->x)
{
Top_Down_Left_To_Right:
do {
IO_FIFO_WAIT(ppdev, 7);
cx = prcl->right - prcl->left - 1;
IO_MAJ_AXIS_PCNT(ppdev, cx);
IO_DEST_X(ppdev, prcl->left);
IO_CUR_X(ppdev, prcl->left + dx);
cy = prcl->bottom - prcl->top - 1;
IO_MIN_AXIS_PCNT(ppdev, cy);
IO_DEST_Y(ppdev, prcl->top);
IO_CUR_Y(ppdev, prcl->top + dy);
IO_CMD(ppdev, BITBLT | DRAW | DIR_TYPE_XY | WRITE |
DRAWING_DIR_TBLRXM);
prcl++;
} while (--c != 0);
}
else
{
do {
IO_FIFO_WAIT(ppdev, 7);
cx = prcl->right - prcl->left - 1;
IO_MAJ_AXIS_PCNT(ppdev, cx);
IO_DEST_X(ppdev, prcl->left + cx);
IO_CUR_X(ppdev, prcl->left + cx + dx);
cy = prcl->bottom - prcl->top - 1;
IO_MIN_AXIS_PCNT(ppdev, cy);
IO_DEST_Y(ppdev, prcl->top);
IO_CUR_Y(ppdev, prcl->top + dy);
IO_CMD(ppdev, BITBLT | DRAW | DIR_TYPE_XY | WRITE |
DRAWING_DIR_TBRLXM);
prcl++;
} while (--c != 0);
}
}
else
{
if (prclDst->left <= pptlSrc->x)
{
do {
IO_FIFO_WAIT(ppdev, 7);
cx = prcl->right - prcl->left - 1;
IO_MAJ_AXIS_PCNT(ppdev, cx);
IO_DEST_X(ppdev, prcl->left);
IO_CUR_X(ppdev, prcl->left + dx);
cy = prcl->bottom - prcl->top - 1;
IO_MIN_AXIS_PCNT(ppdev, cy);
IO_DEST_Y(ppdev, prcl->top + cy);
IO_CUR_Y(ppdev, prcl->top + cy + dy);
IO_CMD(ppdev, BITBLT | DRAW | DIR_TYPE_XY | WRITE |
DRAWING_DIR_BTLRXM);
prcl++;
} while (--c != 0);
}
else
{
do {
IO_FIFO_WAIT(ppdev, 7);
cx = prcl->right - prcl->left - 1;
IO_MAJ_AXIS_PCNT(ppdev, cx);
IO_DEST_X(ppdev, prcl->left + cx);
IO_CUR_X(ppdev, prcl->left + cx + dx);
cy = prcl->bottom - prcl->top - 1;
IO_MIN_AXIS_PCNT(ppdev, cy);
IO_DEST_Y(ppdev, prcl->top + cy);
IO_CUR_Y(ppdev, prcl->top + cy + dy);
IO_CMD(ppdev, BITBLT | DRAW | DIR_TYPE_XY | WRITE |
DRAWING_DIR_BTRLXM);
prcl++;
} while (--c != 0);
}
}
}
/******************************Public*Routine******************************\
* VOID vIoCopyTransparent
*
* Does a screen-to-screen blt of a list of rectangles using a source
* colorkey for transparency.
*
\**************************************************************************/
VOID vIoCopyTransparent( // Type FNCOPYTRANSPARENT
PDEV* ppdev,
LONG c, // Can't be zero
RECTL* prcl, // Array of relative coordinates destination rectangles
POINTL* pptlSrc, // Original unclipped source point
RECTL* prclDst, // Original unclipped destination rectangle
ULONG iColor)
{
LONG dx;
LONG dy; // Add delta to destination to get source
ASSERTDD(c > 0, "Can't handle zero rectangles");
dx = pptlSrc->x - prclDst->left;
dy = pptlSrc->y - prclDst->top;
if (DEPTH32(ppdev))
{
IO_FIFO_WAIT(ppdev, 5);
IO_COLOR_CMP32(ppdev, iColor);
}
else
{
IO_FIFO_WAIT(ppdev, 4);
IO_COLOR_CMP(ppdev, iColor);
}
IO_MULTIFUNC_CNTL(ppdev, ppdev->ulMiscState
| MULT_MISC_COLOR_COMPARE);
IO_FRGD_MIX(ppdev, SRC_DISPLAY_MEMORY | OVERPAINT);
IO_PIX_CNTL(ppdev, ALL_ONES);
while (TRUE)
{
IO_FIFO_WAIT(ppdev, 7);
IO_CUR_X(ppdev, prcl->left + dx);
IO_CUR_Y(ppdev, prcl->top + dy);
IO_DEST_X(ppdev, prcl->left);
IO_DEST_Y(ppdev, prcl->top);
IO_MAJ_AXIS_PCNT(ppdev, prcl->right - prcl->left - 1);
IO_MIN_AXIS_PCNT(ppdev, prcl->bottom - prcl->top - 1);
IO_CMD(ppdev, BITBLT | DRAW | DIR_TYPE_XY |
WRITE | DRAWING_DIR_TBLRXM);
if (--c == 0)
{
IO_FIFO_WAIT(ppdev, 1);
IO_MULTIFUNC_CNTL(ppdev, ppdev->ulMiscState);
return;
}
prcl++;
}
}
Reference in a new issue Copy permalink