mirror of https://github.com/lianthony/NT4.0
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
495 lines
15 KiB
495 lines
15 KiB
/******************************Module*Header*******************************\
|
|
* Module Name: Brush.c
|
|
*
|
|
* Handles all brush/pattern initialization and realization.
|
|
*
|
|
* Copyright (c) 1992-1995 Microsoft Corporation
|
|
*
|
|
\**************************************************************************/
|
|
|
|
#include "precomp.h"
|
|
|
|
/******************************Public*Routine******************************\
|
|
* VOID vRealizeDitherPattern
|
|
*
|
|
* Generates an 8x8 dither pattern, in our internal realization format, for
|
|
* the color ulRGBToDither. Note that the high byte of ulRGBToDither does
|
|
* not need to be set to zero, because vComputeSubspaces ignores it.
|
|
\**************************************************************************/
|
|
|
|
VOID vRealizeDitherPattern(
|
|
RBRUSH* prb,
|
|
ULONG ulRGBToDither)
|
|
{
|
|
ULONG ulNumVertices;
|
|
VERTEX_DATA vVertexData[4];
|
|
VERTEX_DATA* pvVertexData;
|
|
LONG i;
|
|
|
|
// Calculate what color subspaces are involved in the dither:
|
|
|
|
pvVertexData = vComputeSubspaces(ulRGBToDither, vVertexData);
|
|
|
|
// Now that we have found the bounding vertices and the number of
|
|
// pixels to dither for each vertex, we can create the dither pattern
|
|
|
|
ulNumVertices = pvVertexData - vVertexData;
|
|
// # of vertices with more than zero pixels in the dither
|
|
|
|
// Do the actual dithering:
|
|
|
|
vDitherColor(&prb->aulPattern[0], vVertexData, pvVertexData, ulNumVertices);
|
|
|
|
// Initialize the fields we need:
|
|
|
|
prb->ptlBrushOrg.x = LONG_MIN;
|
|
prb->fl = 0;
|
|
prb->pbe = NULL;
|
|
}
|
|
|
|
/******************************Public*Routine******************************\
|
|
* BOOL DrvRealizeBrush
|
|
*
|
|
* This function allows us to convert GDI brushes into an internal form
|
|
* we can use. It may be called directly by GDI at SelectObject time, or
|
|
* it may be called by GDI as a result of us calling BRUSHOBJ_pvGetRbrush
|
|
* to create a realized brush in a function like DrvBitBlt.
|
|
*
|
|
* Note that we have no way of determining what the current Rop or brush
|
|
* alignment are at this point.
|
|
*
|
|
\**************************************************************************/
|
|
|
|
BOOL DrvRealizeBrush(
|
|
BRUSHOBJ* pbo,
|
|
SURFOBJ* psoDst,
|
|
SURFOBJ* psoPattern,
|
|
SURFOBJ* psoMask,
|
|
XLATEOBJ* pxlo,
|
|
ULONG iHatch)
|
|
{
|
|
PDEV* ppdev;
|
|
ULONG iPatternFormat;
|
|
BYTE* pjSrc;
|
|
BYTE* pjDst;
|
|
LONG lSrcDelta;
|
|
LONG cj;
|
|
LONG i;
|
|
LONG j;
|
|
RBRUSH* prb;
|
|
ULONG* pulXlate;
|
|
SURFOBJ* psoPunt;
|
|
RECTL rclDst;
|
|
BOOL b;
|
|
|
|
ppdev = (PDEV*) psoDst->dhpdev;
|
|
|
|
// We only handle brushes if we have an off-screen brush cache
|
|
// available. If there isn't one, we can simply fail the realization,
|
|
// and eventually GDI will do the drawing for us (although a lot
|
|
// slower than we could have done it):
|
|
|
|
if (!(ppdev->flStatus & STAT_BRUSH_CACHE))
|
|
goto ReturnFalse;
|
|
|
|
// We have a fast path for dithers when we set GCAPS_DITHERONREALIZE:
|
|
|
|
if (iHatch & RB_DITHERCOLOR)
|
|
{
|
|
// Implementing DITHERONREALIZE increased our score on a certain
|
|
// unmentionable benchmark by 0.4 million 'megapixels'. Too bad
|
|
// this didn't work in the first version of NT.
|
|
|
|
prb = BRUSHOBJ_pvAllocRbrush(pbo,
|
|
sizeof(RBRUSH) + PELS_TO_BYTES(TOTAL_BRUSH_SIZE));
|
|
if (prb == NULL)
|
|
goto ReturnFalse;
|
|
|
|
vRealizeDitherPattern(prb, iHatch);
|
|
goto ReturnTrue;
|
|
}
|
|
|
|
// We only accelerate 8x8 patterns. Since Win3.1 and Chicago don't
|
|
// support patterns of any other size, it's a safe bet that 99.9%
|
|
// of the patterns we'll ever get will be 8x8:
|
|
|
|
if ((psoPattern->sizlBitmap.cx != 8) ||
|
|
(psoPattern->sizlBitmap.cy != 8))
|
|
goto ReturnFalse;
|
|
|
|
iPatternFormat = psoPattern->iBitmapFormat;
|
|
|
|
prb = BRUSHOBJ_pvAllocRbrush(pbo,
|
|
sizeof(RBRUSH) + PELS_TO_BYTES(TOTAL_BRUSH_SIZE));
|
|
if (prb == NULL)
|
|
goto ReturnFalse;
|
|
|
|
// Initialize the fields we need:
|
|
|
|
prb->ptlBrushOrg.x = LONG_MIN;
|
|
prb->fl = 0;
|
|
prb->pbe = NULL;
|
|
|
|
lSrcDelta = psoPattern->lDelta;
|
|
pjSrc = (BYTE*) psoPattern->pvScan0;
|
|
pjDst = (BYTE*) &prb->aulPattern[0];
|
|
|
|
if ((ppdev->iBitmapFormat == iPatternFormat) &&
|
|
((pxlo == NULL) || (pxlo->flXlate & XO_TRIVIAL)))
|
|
{
|
|
DISPDBG((2, "Realizing un-translated brush"));
|
|
|
|
// The pattern is the same colour depth as the screen, and
|
|
// there's no translation to be done:
|
|
|
|
cj = PELS_TO_BYTES(8); // Every pattern is 8 pels wide
|
|
|
|
for (i = 8; i != 0; i--)
|
|
{
|
|
RtlCopyMemory(pjDst, pjSrc, cj);
|
|
|
|
pjSrc += lSrcDelta;
|
|
pjDst += cj;
|
|
}
|
|
}
|
|
#if 0
|
|
else if (iPatternFormat == BMF_1BPP)
|
|
{
|
|
DISPDBG((2, "Realizing 1bpp brush"));
|
|
|
|
// We word align the monochrome bitmap so that every row starts
|
|
// on a new word (so that we can do word writes later to transfer
|
|
// the bitmap):
|
|
|
|
for (i = 8; i != 0; i--)
|
|
{
|
|
*pjDst = *pjSrc;
|
|
pjDst += sizeof(WORD);
|
|
pjSrc += lSrcDelta;
|
|
}
|
|
|
|
pulXlate = pxlo->pulXlate;
|
|
prb->fl |= RBRUSH_2COLOR;
|
|
prb->ulForeColor = pulXlate[1];
|
|
prb->ulBackColor = pulXlate[0];
|
|
}
|
|
#endif
|
|
else if ((iPatternFormat == BMF_4BPP) && (ppdev->iBitmapFormat == BMF_8BPP))
|
|
{
|
|
DISPDBG((2, "Realizing 4bpp brush"));
|
|
|
|
// The screen is 8bpp and the pattern is 4bpp:
|
|
|
|
ASSERTDD((ppdev->iBitmapFormat == BMF_8BPP) &&
|
|
(iPatternFormat == BMF_4BPP),
|
|
"Messed up brush logic");
|
|
|
|
pulXlate = pxlo->pulXlate;
|
|
|
|
for (i = 8; i != 0; i--)
|
|
{
|
|
// Inner loop is repeated only 4 times because each loop
|
|
// handles 2 pixels:
|
|
|
|
for (j = 4; j != 0; j--)
|
|
{
|
|
*pjDst++ = (BYTE) pulXlate[*pjSrc >> 4];
|
|
*pjDst++ = (BYTE) pulXlate[*pjSrc & 15];
|
|
pjSrc++;
|
|
}
|
|
|
|
pjSrc += lSrcDelta - 4;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// We've got a brush whose format we haven't special cased. No
|
|
// problem, we can have GDI convert it to our device's format.
|
|
// We simply use a temporary surface object that was created with
|
|
// the same format as the display, and point it to our brush
|
|
// realization:
|
|
|
|
DISPDBG((5, "Realizing funky brush"));
|
|
|
|
psoPunt = ppdev->psoBank;
|
|
psoPunt->pvScan0 = pjDst;
|
|
psoPunt->lDelta = PELS_TO_BYTES(8);
|
|
|
|
rclDst.left = 0;
|
|
rclDst.top = 0;
|
|
rclDst.right = 8;
|
|
rclDst.bottom = 8;
|
|
|
|
b = EngCopyBits(psoPunt, psoPattern, NULL, pxlo,
|
|
&rclDst, (POINTL*) &rclDst);
|
|
|
|
if (!b)
|
|
{
|
|
goto ReturnFalse;
|
|
}
|
|
}
|
|
|
|
ReturnTrue:
|
|
|
|
return(TRUE);
|
|
|
|
ReturnFalse:
|
|
|
|
if (psoPattern != NULL)
|
|
{
|
|
DISPDBG((2, "Failed realization -- Type: %li Format: %li cx: %li cy: %li",
|
|
psoPattern->iType, psoPattern->iBitmapFormat,
|
|
psoPattern->sizlBitmap.cx, psoPattern->sizlBitmap.cy));
|
|
}
|
|
|
|
return(FALSE);
|
|
}
|
|
|
|
/******************************Public*Routine******************************\
|
|
* BOOL bEnableBrushCache
|
|
*
|
|
* Allocates off-screen memory for storing the brush cache.
|
|
\**************************************************************************/
|
|
|
|
BOOL bEnableBrushCache(
|
|
PDEV* ppdev)
|
|
{
|
|
OH* poh; // Points to off-screen chunk of memory
|
|
BRUSHENTRY* pbe; // Pointer to the brush-cache entry
|
|
LONG i;
|
|
LONG cBrushAlign; // 0 = no alignment,
|
|
// n = align to n pixels
|
|
LONG x;
|
|
LONG y;
|
|
|
|
cBrushAlign = 64; // Align all brushes to 64 pixels
|
|
|
|
DISPDBG((2, "cBrushAlign = %d", cBrushAlign));
|
|
|
|
pbe = &ppdev->abe[0]; // Points to where we'll put the first
|
|
// brush cache entry
|
|
|
|
{
|
|
|
|
// Reserve the offscreen space that is required for the CP to do
|
|
// solid fills. If this fails, our solid fill code will not work.
|
|
// We need two DWORD storage locations if we're going to do any
|
|
// monochrome expansion stuff (font painting...).
|
|
|
|
// Note: these must be 8 byte aligned for the cirrus chips
|
|
|
|
// Not having a solid color work area is a
|
|
// fatal error for this driver.
|
|
|
|
DISPDBG((2,"Allocating solid brush work area"));
|
|
poh = pohAllocatePermanent(ppdev, 16, 1);
|
|
|
|
ASSERTDD((poh != NULL),
|
|
"We couldn't allocate offscreen space for the solid colors");
|
|
|
|
ppdev->ulSolidColorOffset = ((((poh->y * ppdev->lDelta) +
|
|
PELS_TO_BYTES(poh->x)) + 7) & ~7);
|
|
|
|
DISPDBG((2,"ppdev->ulSolidColorOffset = %xh", ppdev->ulSolidColorOffset));
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////
|
|
// Special cases where we want no brush cache...
|
|
//
|
|
// There are a couple of instances where we have no xfer buffer to
|
|
// the HW blt engine. In that case, we are unable to realize
|
|
// patterns, so don't enable the cache.
|
|
//
|
|
// (1) NEC Mips nachines lock up on xfers, so they're diabled.
|
|
// (2) At 1280x1024 on a 2MB card, we currently have no room for
|
|
// the buffer because of stretched scans. This will be fixed.
|
|
|
|
{
|
|
if (ppdev->pulXfer == NULL)
|
|
goto ReturnTrue;
|
|
|
|
}
|
|
|
|
//
|
|
// Allocate single brush location for intermediate alignment purposes
|
|
//
|
|
|
|
poh = pohAllocatePermanent(ppdev,
|
|
// remember this is pixels, not bytes
|
|
(8 * 8) + (cBrushAlign - 1),
|
|
1);
|
|
|
|
if (poh == NULL)
|
|
{
|
|
DISPDBG((2,"Failed to allocate aligned brush area"));
|
|
goto ReturnTrue; // See note about why we can return TRUE...
|
|
}
|
|
ppdev->ulAlignedPatternOffset = ((poh->xy) +
|
|
(PELS_TO_BYTES(cBrushAlign) - 1)) &
|
|
~(PELS_TO_BYTES(cBrushAlign) - 1);
|
|
DISPDBG((2,"ppdev->ulAlignedPatternOffset = %xh", ppdev->ulAlignedPatternOffset));
|
|
|
|
//
|
|
// Allocate brush cache
|
|
//
|
|
|
|
poh = pohAllocatePermanent(ppdev,
|
|
// remember this is pixels, not bytes
|
|
(BRUSH_TILE_FACTOR * 8 * 8) + (cBrushAlign - 1),
|
|
FAST_BRUSH_COUNT);
|
|
|
|
if (poh == NULL)
|
|
{
|
|
DISPDBG((2,"Failed to allocate brush cache"));
|
|
goto ReturnTrue; // See note about why we can return TRUE...
|
|
}
|
|
|
|
ppdev->cBrushCache = FAST_BRUSH_COUNT;
|
|
|
|
// Hardware brushes require that the bits start on a 64 (height*width)
|
|
// pixel boundary. The heap manager doesn't guarantee us any such
|
|
// alignment, so we allocate a bit of extra room so that we can
|
|
// do the alignment ourselves:
|
|
|
|
x = poh->x;
|
|
y = poh->y;
|
|
|
|
for (i = FAST_BRUSH_COUNT; i != 0; i--)
|
|
{
|
|
ULONG ulOffset;
|
|
ULONG ulCeil;
|
|
ULONG ulDiff;
|
|
|
|
// Note: I learned the HARD way that you can't just align x
|
|
// to your pattern size, because the lDelta of your screen
|
|
// is not guaranteed to be a multiple of your pattern size.
|
|
// Since y is changing in this loop, the recalc must
|
|
// be done inside this loop. I really need to set these
|
|
// up with a hardcoded linear buffer or else make the
|
|
// heap linear.
|
|
|
|
ulOffset = (y * ppdev->lDelta) + PELS_TO_BYTES(x);
|
|
ulCeil = (ulOffset + (PELS_TO_BYTES(cBrushAlign)-1)) & ~(PELS_TO_BYTES(cBrushAlign)-1);
|
|
ulDiff = (ulCeil - ulOffset)/ppdev->cBpp;
|
|
|
|
// If we hadn't allocated 'ppdev' with FL_ZERO_MEMORY,
|
|
// we would have to initialize pbe->prbVerify too...
|
|
|
|
pbe->x = x + ulDiff;
|
|
pbe->y = y;
|
|
pbe->xy = (pbe->y * ppdev->lDelta) + PELS_TO_BYTES(pbe->x);
|
|
|
|
DISPDBG((2, "BrushCache[%d] pos(%d,%d) offset(%d)",
|
|
i,
|
|
pbe->x,
|
|
pbe->y,
|
|
pbe->xy
|
|
));
|
|
|
|
y++;
|
|
pbe++;
|
|
}
|
|
}
|
|
|
|
// Note that we don't have to remember 'poh' for when we have
|
|
// to disable brushes -- the off-screen heap frees any
|
|
// off-screen heap allocations automatically.
|
|
|
|
// We successfully allocated the brush cache, so let's turn
|
|
// on the switch showing that we can use it:
|
|
|
|
ppdev->flStatus |= STAT_BRUSH_CACHE;
|
|
|
|
ReturnTrue:
|
|
|
|
// If we couldn't allocate a brush cache, it's not a catastrophic
|
|
// failure; patterns will still work, although they'll be a bit
|
|
// slower since they'll go through GDI. As a result we don't
|
|
// actually have to fail this call:
|
|
|
|
vAssertModeBrushCache(ppdev, TRUE);
|
|
|
|
DISPDBG((5, "Passed bEnableBrushCache"));
|
|
|
|
return(TRUE);
|
|
}
|
|
|
|
/******************************Public*Routine******************************\
|
|
* VOID vDisableBrushCache
|
|
*
|
|
* Cleans up anything done in bEnableBrushCache.
|
|
\**************************************************************************/
|
|
|
|
VOID vDisableBrushCache(PDEV* ppdev)
|
|
{
|
|
// We ain't gotta do nothin'
|
|
}
|
|
|
|
/******************************Public*Routine******************************\
|
|
* VOID vAssertModeBrushCache
|
|
*
|
|
* Resets the brush cache when we exit out of full-screen.
|
|
\**************************************************************************/
|
|
|
|
VOID vAssertModeBrushCache(
|
|
PDEV* ppdev,
|
|
BOOL bEnable)
|
|
{
|
|
BRUSHENTRY* pbe;
|
|
LONG i;
|
|
|
|
if (bEnable)
|
|
{
|
|
// Invalidate the brush cache:
|
|
|
|
pbe = &ppdev->abe[0];
|
|
|
|
for (i = ppdev->cBrushCache; i != 0; i--)
|
|
{
|
|
pbe->prbVerify = NULL;
|
|
pbe++;
|
|
}
|
|
|
|
// Create a solid 8 X 8 monochrome bitmap in offscreen memory.
|
|
//
|
|
// This is 16 lines (double high, double wide patterns) below
|
|
// the bottom of the visable raster. This bitmap will be used for
|
|
// solid fills.
|
|
|
|
if (ppdev->flCaps & CAPS_MM_IO)
|
|
{
|
|
#if 0
|
|
ULONG *temp;
|
|
|
|
temp = (PULONG)(ppdev->pjScreen + ppdev->ulSolidColorOffset);
|
|
*temp = 0xFFFFFFFF;
|
|
temp = (PULONG)(ppdev->pjScreen + ppdev->ulSolidColorOffset + 4);
|
|
*temp = 0xFFFFFFFF;
|
|
#else
|
|
BYTE* pjBase = ppdev->pjBase;
|
|
|
|
CP_MM_WAIT_FOR_BLT_COMPLETE(ppdev, pjBase);
|
|
CP_MM_BLT_MODE(ppdev, pjBase, 0);
|
|
CP_MM_XCNT(ppdev, pjBase, 1);
|
|
CP_MM_YCNT(ppdev, pjBase, 8);
|
|
CP_MM_DST_Y_OFFSET(ppdev, pjBase, 1);
|
|
CP_MM_ROP(ppdev, pjBase, CL_WHITENESS);
|
|
CP_MM_DST_ADDR(ppdev, pjBase, ppdev->ulSolidColorOffset);
|
|
CP_MM_START_BLT(ppdev, pjBase);
|
|
#endif
|
|
}
|
|
else
|
|
{
|
|
BYTE* pjPorts = ppdev->pjPorts;
|
|
|
|
CP_IO_WAIT_FOR_BLT_COMPLETE(ppdev, pjPorts);
|
|
CP_IO_BLT_MODE(ppdev, pjPorts, 0);
|
|
CP_IO_XCNT(ppdev, pjPorts, 1);
|
|
CP_IO_YCNT(ppdev, pjPorts, 8);
|
|
CP_IO_DST_Y_OFFSET(ppdev, pjPorts, 1);
|
|
CP_IO_ROP(ppdev, pjPorts, CL_WHITENESS);
|
|
CP_IO_DST_ADDR(ppdev, pjPorts, ppdev->ulSolidColorOffset);
|
|
CP_IO_START_BLT(ppdev, pjPorts);
|
|
}
|
|
}
|
|
}
|