mirror of https://github.com/tongzx/nt5src
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.
1156 lines
35 KiB
1156 lines
35 KiB
/******************************Module*Header*******************************\
|
|
* Module Name: bank.c
|
|
*
|
|
* Contains all the banking code for the display driver.
|
|
*
|
|
* It's helpful not to have to implement all the DDI drawing functionality
|
|
* in a driver (who wants to write the code to support true ROP4's with
|
|
* arbitrary sized patterns?). Fortunately, we can punt to GDI for any
|
|
* drawing we don't want to do. And if GDI can write directly on the frame
|
|
* buffer bits, performance won't even be toooo bad.
|
|
*
|
|
* NT's GDI can draw on any standard format frame buffer. When the entire
|
|
* frame buffer can be mapped into main memory, it's very simple to set up:
|
|
* the display driver tells GDI the frame buffer format and location, and
|
|
* GDI can then just draw directly.
|
|
*
|
|
* When only one bank of the frame buffer can be mapped into main memory
|
|
* at one time (e.g., there is a moveable 64k aperture) things are not
|
|
* nearly so easy. For every bank spanned by a drawing operation, we have
|
|
* to set the hardware to the bank, and call back to GDI. We tell GDI
|
|
* to draw only on the mapped-in bank by mucking with the drawing call's
|
|
* CLIPOBJ.
|
|
*
|
|
* This module contains the code for doing all banking support.
|
|
*
|
|
* This code supports 8, 16 and 32bpp colour depths, arbitrary bank
|
|
* sizes, and handles 'broken rasters' (which happens when the bank size
|
|
* is not a multiple of the scan length; some scans will end up being
|
|
* split over two separate banks).
|
|
*
|
|
* Note: If you mess with this code and break it, you can expect to get
|
|
* random access violations on call-backs in internal GDI routines
|
|
* that are very hard to debug.
|
|
*
|
|
* Copyright (c) 1993-1995 Microsoft Corporation
|
|
\**************************************************************************/
|
|
|
|
#include "precomp.h"
|
|
|
|
VOID vBankSelectMode(
|
|
PDEV* ppdev,
|
|
BANK_MODE bankm)
|
|
{
|
|
if (bankm == BANK_ON)
|
|
{
|
|
// Make sure the processor graphics engine is idle before we start
|
|
// drawing:
|
|
|
|
if (ppdev->pjMmBase != NULL)
|
|
{
|
|
MM_WAIT_FOR_IDLE(ppdev, ppdev->pjMmBase);
|
|
MM_DATAPATH_CTRL(ppdev, ppdev->pjMmBase, SRC_IS_CPU_DATA);
|
|
MM_CTRL_REG_1(ppdev, ppdev->pjMmBase, PACKED_PIXEL_VIEW |
|
|
BITS_PER_PIX_8 |
|
|
ENAB_TRITON_MODE);
|
|
}
|
|
else
|
|
{
|
|
IO_WAIT_FOR_IDLE(ppdev, ppdev->pjIoBase);
|
|
IO_DATAPATH_CTRL(ppdev, ppdev->pjIoBase, SRC_IS_CPU_DATA);
|
|
IO_CTRL_REG_1(ppdev, ppdev->pjIoBase, PACKED_PIXEL_VIEW |
|
|
BITS_PER_PIX_8 |
|
|
ENAB_TRITON_MODE);
|
|
}
|
|
}
|
|
}
|
|
|
|
VOID vBankMap(
|
|
PDEV* ppdev,
|
|
LONG iBank)
|
|
{
|
|
#if defined(i386)
|
|
|
|
volatile PFN pfnBank;
|
|
|
|
pfnBank = ppdev->pfnBankSwitchCode;
|
|
|
|
_asm mov eax,iBank;
|
|
_asm add eax,eax;
|
|
_asm mov edx,eax;
|
|
_asm inc edx;
|
|
|
|
_asm call pfnBank;
|
|
|
|
#else
|
|
|
|
ASSERTDD(iBank == 0, "Shouldn't be banking on non-x86");
|
|
|
|
#endif
|
|
}
|
|
|
|
|
|
BOOL bBankInitialize(
|
|
PDEV* ppdev)
|
|
{
|
|
// Set this now in case we have to early-out:
|
|
|
|
ppdev->pBankInfo = NULL;
|
|
|
|
// Only the x86 miniport has banking code; the Alpha miniport always
|
|
// maps the frame buffer linearly:
|
|
|
|
#if defined(i386)
|
|
{
|
|
PVIDEO_BANK_SELECT pBankInfo;
|
|
UINT ReturnedDataLength;
|
|
VIDEO_BANK_SELECT TempBankInfo;
|
|
DWORD status;
|
|
|
|
// Query the miniport for banking info for this mode.
|
|
//
|
|
// First, figure out how big a buffer we need for the banking info
|
|
// (returned in TempBankInfo->Size).
|
|
|
|
if (status = EngDeviceIoControl(ppdev->hDriver,
|
|
IOCTL_VIDEO_GET_BANK_SELECT_CODE,
|
|
NULL, // input buffer
|
|
0,
|
|
(LPVOID) &TempBankInfo, // output buffer
|
|
sizeof(VIDEO_BANK_SELECT),
|
|
&ReturnedDataLength))
|
|
{
|
|
//
|
|
// We expect this call to fail, because we didn't allow any room
|
|
// for the code; we just want to get the required output buffer
|
|
// size. Make sure we got the expected error, ERROR_MORE_DATA.
|
|
//
|
|
// BUGBUG
|
|
// BUGBUG reenable this check when we fix error reporting from miniports
|
|
|
|
//if (status != ERROR_MORE_DATA) {
|
|
//
|
|
// //
|
|
// // Should post error and return FALSE
|
|
// //
|
|
//
|
|
// RIP("Initialization error - GetBankSelectCode, first call");
|
|
//
|
|
// goto ReturnFailure;
|
|
//}
|
|
}
|
|
|
|
// Now, allocate a buffer of the required size and get the banking info.
|
|
|
|
pBankInfo = (PVIDEO_BANK_SELECT) EngAllocMem(FL_ZERO_MEMORY,
|
|
TempBankInfo.Size, ALLOC_TAG);
|
|
if (pBankInfo == NULL)
|
|
{
|
|
RIP("Initialization ReturnFailure -- couldn't get memory for bank info");
|
|
goto ReturnFailure;
|
|
}
|
|
|
|
// Remember it so we can free it later:
|
|
|
|
ppdev->pBankInfo = pBankInfo;
|
|
|
|
if (EngDeviceIoControl(ppdev->hDriver,
|
|
IOCTL_VIDEO_GET_BANK_SELECT_CODE,
|
|
NULL,
|
|
0,
|
|
(LPVOID) pBankInfo,
|
|
TempBankInfo.Size,
|
|
&ReturnedDataLength))
|
|
{
|
|
RIP("Initialization ReturnFailure -- bBankInitialize, second call");
|
|
goto ReturnFailure;
|
|
}
|
|
|
|
ppdev->pfnBankSwitchCode =
|
|
(PFN) (((BYTE*) pBankInfo) + pBankInfo->CodeOffset);
|
|
|
|
return(TRUE);
|
|
|
|
ReturnFailure:
|
|
|
|
if (ppdev->pBankInfo)
|
|
{
|
|
EngFreeMem(ppdev->pBankInfo);
|
|
}
|
|
|
|
return(FALSE);
|
|
}
|
|
#endif
|
|
|
|
return(TRUE);
|
|
}
|
|
|
|
/******************************Public*Routine******************************\
|
|
* BOOL bEnableBanking
|
|
*
|
|
\**************************************************************************/
|
|
|
|
BOOL bEnableBanking(
|
|
PDEV* ppdev)
|
|
{
|
|
CLIPOBJ* pcoBank;
|
|
SURFOBJ* psoBank;
|
|
SIZEL sizl;
|
|
HSURF hsurf;
|
|
LONG lDelta;
|
|
LONG cjBank;
|
|
LONG cPower2;
|
|
|
|
// This routine may be called multiple times (e.g., each time
|
|
// full-screen is exited), so make sure we do any allocations
|
|
// only once:
|
|
|
|
if (ppdev->pcoBank == NULL)
|
|
{
|
|
// Create a temporary clip object that we'll use for the bank
|
|
// when we're given a Null or DC_TRIVIAL clip object:
|
|
|
|
pcoBank = EngCreateClip();
|
|
if (pcoBank == NULL)
|
|
goto ReturnFalse;
|
|
|
|
// We break every per-bank GDI call-back into simple rectangles:
|
|
|
|
pcoBank->iDComplexity = DC_RECT;
|
|
pcoBank->fjOptions = OC_BANK_CLIP;
|
|
|
|
// Create a GDI surface that we'll wrap around our bank in
|
|
// call-backs:
|
|
|
|
sizl.cx = ppdev->cxMemory;
|
|
sizl.cy = ppdev->cyMemory;
|
|
|
|
hsurf = (HSURF) EngCreateBitmap(sizl,
|
|
ppdev->lDelta,
|
|
ppdev->iBitmapFormat,
|
|
BMF_TOPDOWN,
|
|
ppdev->pjScreen);
|
|
|
|
// Note that we hook zero calls -- after all, the entire point
|
|
// of all this is to have GDI do all the drawing on the bank.
|
|
// Once we're done the association, we can leave the surface
|
|
// permanently locked:
|
|
|
|
if ((hsurf == 0) ||
|
|
(!EngAssociateSurface(hsurf, ppdev->hdevEng, 0)) ||
|
|
(!(psoBank = EngLockSurface(hsurf))))
|
|
{
|
|
DISPDBG((0, "Failed wrapper surface creation"));
|
|
|
|
EngDeleteSurface(hsurf);
|
|
EngDeleteClip(pcoBank);
|
|
|
|
goto ReturnFalse;
|
|
}
|
|
|
|
ppdev->pcoBank = pcoBank;
|
|
ppdev->psoBank = psoBank;
|
|
|
|
lDelta = ppdev->lDelta;
|
|
cjBank = ppdev->cjBank;
|
|
|
|
ASSERTDD(lDelta > 0, "Bad things happen with negative lDeltas");
|
|
ASSERTDD(cjBank > lDelta, "Worse things happen with bad bank sizes");
|
|
|
|
if (((lDelta & (lDelta - 1)) != 0) || ((cjBank & (cjBank - 1)) != 0))
|
|
{
|
|
// When either the screen stride or the bank size is not a power
|
|
// of two, we have to use the slower 'bBankComputeNonPower2'
|
|
// function for bank calculations, 'cause there can be broken
|
|
// rasters and stuff:
|
|
|
|
ppdev->pfnBankCompute = bBankComputeNonPower2;
|
|
}
|
|
else
|
|
{
|
|
// We can use the super duper fast bank calculator. Yippie,
|
|
// yahoo! (I am easily amused.)
|
|
|
|
cPower2 = 0;
|
|
while (cjBank != lDelta)
|
|
{
|
|
cjBank >>= 1;
|
|
cPower2++;
|
|
}
|
|
|
|
// We've just calculated that cjBank / lDelta = 2 ^ cPower2:
|
|
|
|
ppdev->cPower2ScansPerBank = cPower2;
|
|
|
|
while (cjBank != 1)
|
|
{
|
|
cjBank >>= 1;
|
|
cPower2++;
|
|
}
|
|
|
|
// Continuing on, we've calculated that cjBank = 2 ^ cPower2:
|
|
|
|
ppdev->cPower2BankSizeInBytes = cPower2;
|
|
|
|
ppdev->pfnBankCompute = bBankComputePower2;
|
|
}
|
|
}
|
|
|
|
// Warm up the hardware:
|
|
|
|
if (!bBankInitialize(ppdev))
|
|
goto ReturnFalse;
|
|
|
|
vBankSelectMode(ppdev, BANK_ENABLE);
|
|
|
|
DISPDBG((5, "Passed bEnableBanking"));
|
|
|
|
return(TRUE);
|
|
|
|
ReturnFalse:
|
|
|
|
DISPDBG((0, "Failed bEnableBanking!"));
|
|
|
|
return(FALSE);
|
|
}
|
|
|
|
/******************************Public*Routine******************************\
|
|
* VOID vDisableBanking
|
|
*
|
|
\**************************************************************************/
|
|
|
|
VOID vDisableBanking(PDEV* ppdev)
|
|
{
|
|
HSURF hsurf;
|
|
|
|
if (ppdev->psoBank != NULL)
|
|
{
|
|
hsurf = ppdev->psoBank->hsurf;
|
|
EngUnlockSurface(ppdev->psoBank);
|
|
EngDeleteSurface(hsurf);
|
|
}
|
|
|
|
if (ppdev->pcoBank != NULL)
|
|
EngDeleteClip(ppdev->pcoBank);
|
|
|
|
if (ppdev->pBankInfo)
|
|
{
|
|
EngFreeMem(ppdev->pBankInfo);
|
|
}
|
|
}
|
|
|
|
/******************************Public*Routine******************************\
|
|
* VOID vAssertModeBanking
|
|
*
|
|
\**************************************************************************/
|
|
|
|
VOID vAssertModeBanking(
|
|
PDEV* ppdev,
|
|
BOOL bEnable)
|
|
{
|
|
// Inform the miniport bank code about the change in state:
|
|
|
|
vBankSelectMode(ppdev, bEnable ? BANK_ENABLE : BANK_DISABLE);
|
|
}
|
|
|
|
/******************************Public*Routine******************************\
|
|
* BOOL bBankComputeNonPower2
|
|
*
|
|
* Given the bounds of the drawing operation described by 'prclDraw',
|
|
* computes the bank number and rectangle bounds for the first engine
|
|
* call back.
|
|
*
|
|
* Returns the bank number, 'prclBank' is the bounds for the first
|
|
* call-back, and 'pcjOffset' is the adjustment for 'pvScan0'.
|
|
*
|
|
* This routine does a couple of divides for the bank calculation. We
|
|
* don't use a look-up table for banks because it's not straight forward
|
|
* to use with broken rasters, and with large amounts of video memory
|
|
* and small banks, the tables could get large. We'd probably use it
|
|
* infrequently enough that the memory manager would be swapping it
|
|
* in and out whenever we touched it.
|
|
*
|
|
* Returns TRUE if prclDraw is entirely contained in one bank; FALSE if
|
|
* prclDraw spans multiple banks.
|
|
*
|
|
\**************************************************************************/
|
|
|
|
BOOL bBankComputeNonPower2( // Type FNBANKCOMPUTE
|
|
PDEV* ppdev,
|
|
RECTL* prclDraw, // Extents of drawing operation, in absolute
|
|
// coordinates
|
|
RECTL* prclBank, // Returns bounds of drawing operation for this
|
|
// bank, in absolute coordinates
|
|
LONG* pcjOffset, // Returns the byte offset for this bank
|
|
LONG* piBank) // Returns the bank number
|
|
{
|
|
LONG cjBufferOffset;
|
|
LONG iBank;
|
|
LONG cjBank;
|
|
LONG cjBankOffset;
|
|
LONG cjBankRemainder;
|
|
LONG cjScan;
|
|
LONG cScansInBank;
|
|
LONG cjScanRemainder;
|
|
LONG lDelta;
|
|
BOOL bOneBank;
|
|
|
|
bOneBank = FALSE;
|
|
lDelta = ppdev->lDelta;
|
|
|
|
cjBufferOffset = prclDraw->top * lDelta
|
|
+ (prclDraw->left << ppdev->cPelSize);
|
|
|
|
cjBank = ppdev->cjBank;
|
|
|
|
// iBank = cjBufferOffset / cjBank;
|
|
// cjBankOffset = cjBufferOffset % cjBank;
|
|
|
|
QUOTIENT_REMAINDER(cjBufferOffset, cjBank, iBank, cjBankOffset);
|
|
|
|
*piBank = iBank;
|
|
*pcjOffset = iBank * cjBank;
|
|
cjBankRemainder = cjBank - cjBankOffset;
|
|
cjScan = (prclDraw->right - prclDraw->left) << ppdev->cPelSize;
|
|
|
|
if (cjBankRemainder < cjScan)
|
|
{
|
|
// Oh no, we've got a broken raster!
|
|
|
|
prclBank->left = prclDraw->left;
|
|
prclBank->right = prclDraw->left +
|
|
(cjBankRemainder >> ppdev->cPelSize);
|
|
prclBank->top = prclDraw->top;
|
|
prclBank->bottom = prclDraw->top + 1;
|
|
}
|
|
else
|
|
{
|
|
// cScansInBank = cjBankRemainder / lDelta;
|
|
// cjScanRemainder = cjBankRemainder % lDelta;
|
|
|
|
ASSERTDD(lDelta > 0, "We assume positive lDelta here");
|
|
|
|
QUOTIENT_REMAINDER(cjBankRemainder, lDelta,
|
|
cScansInBank, cjScanRemainder);
|
|
|
|
if (cjScanRemainder >= cjScan)
|
|
{
|
|
// The bottom scan of the bank may be broken, but it breaks after
|
|
// any drawing we'll be doing on that scan. So we can simply
|
|
// add the scan to this bank:
|
|
|
|
cScansInBank++;
|
|
}
|
|
|
|
prclBank->left = prclDraw->left;
|
|
prclBank->right = prclDraw->right;
|
|
prclBank->top = prclDraw->top;
|
|
prclBank->bottom = prclDraw->top + cScansInBank;
|
|
|
|
if (prclBank->bottom >= prclDraw->bottom)
|
|
{
|
|
prclBank->bottom = prclDraw->bottom;
|
|
bOneBank = TRUE;
|
|
}
|
|
}
|
|
|
|
return(bOneBank);
|
|
}
|
|
|
|
/******************************Public*Routine******************************\
|
|
* BOOL bBankComputePower2
|
|
*
|
|
* Functions the same as 'bBankComputeNonPower2', except that it is
|
|
* an accelerated special case for when both the screen stride and bank
|
|
* size are powers of 2.
|
|
*
|
|
\**************************************************************************/
|
|
|
|
BOOL bBankComputePower2( // Type FNBANKCOMPUTE
|
|
PDEV* ppdev,
|
|
RECTL* prclDraw, // Extents of drawing operation, in absolute
|
|
// coordinates
|
|
RECTL* prclBank, // Returns bounds of drawing operation for this
|
|
// bank, in absolute coordinates
|
|
LONG* pcjOffset, // Returns the byte offset for this bank
|
|
LONG* piBank) // Returns the bank number
|
|
{
|
|
LONG iBank;
|
|
LONG yTopNextBank;
|
|
BOOL bOneBank;
|
|
|
|
iBank = prclDraw->top >> ppdev->cPower2ScansPerBank;
|
|
yTopNextBank = (iBank + 1) << ppdev->cPower2ScansPerBank;
|
|
*piBank = iBank;
|
|
*pcjOffset = iBank << ppdev->cPower2BankSizeInBytes;
|
|
|
|
prclBank->left = prclDraw->left;
|
|
prclBank->right = prclDraw->right;
|
|
prclBank->top = prclDraw->top;
|
|
prclBank->bottom = yTopNextBank;
|
|
|
|
bOneBank = FALSE;
|
|
if (prclBank->bottom >= prclDraw->bottom)
|
|
{
|
|
prclBank->bottom = prclDraw->bottom;
|
|
bOneBank = TRUE;
|
|
}
|
|
|
|
return(bOneBank);
|
|
}
|
|
|
|
#if GDI_BANKING // GDI can't draw directly in the framebuffer
|
|
// when running on the Alpha
|
|
|
|
/******************************Public*Routine******************************\
|
|
* VOID vBankStart
|
|
*
|
|
* Given the bounds of the drawing operation described by 'prclDraw' and
|
|
* the original clip object, maps in the first bank and returns in
|
|
* 'pbnk->pco' and 'pbnk->pso' the CLIPOBJ and SURFOBJ to be passed to the
|
|
* engine for the first banked call-back.
|
|
*
|
|
* Note: This routine only supports the screen being the destination, and
|
|
* not the source. We have a separate, faster routine for doing
|
|
* SRCCOPY reads from the screen, so it isn't worth the extra code
|
|
* size to implement.
|
|
*
|
|
\**************************************************************************/
|
|
|
|
VOID vBankStart(
|
|
PDEV* ppdev, // Physical device information.
|
|
RECTL* prclDraw, // Rectangle bounding the draw area, in relative
|
|
// coordinates. Note that 'left' and 'right'
|
|
// should be set for correct handling with broken
|
|
// rasters.
|
|
CLIPOBJ* pco, // Original drawing clip object (may be modified).
|
|
BANK* pbnk) // Resulting bank information.
|
|
{
|
|
LONG cjOffset;
|
|
LONG xOffset;
|
|
LONG yOffset;
|
|
|
|
xOffset = ppdev->xOffset;
|
|
yOffset = ppdev->yOffset;
|
|
|
|
if ((pco == NULL) || (pco->iDComplexity == DC_TRIVIAL))
|
|
{
|
|
pco = ppdev->pcoBank;
|
|
|
|
// Reset the clipping flag to trivial because we may have left
|
|
// it as rectangular in a previous call:
|
|
|
|
pco->iDComplexity = DC_TRIVIAL;
|
|
|
|
// At the same time we convert to absolute coordinates, make sure
|
|
// we won't try to enumerate past the bounds of the screen:
|
|
|
|
pbnk->rclDraw.left = prclDraw->left + xOffset;
|
|
pbnk->rclDraw.right = prclDraw->right + xOffset;
|
|
|
|
pbnk->rclDraw.top
|
|
= max(0, prclDraw->top + yOffset);
|
|
pbnk->rclDraw.bottom
|
|
= min(ppdev->cyMemory, prclDraw->bottom + yOffset);
|
|
}
|
|
else
|
|
{
|
|
pbnk->rclSaveBounds = pco->rclBounds;
|
|
pbnk->iSaveDComplexity = pco->iDComplexity;
|
|
pbnk->fjSaveOptions = pco->fjOptions;
|
|
|
|
// Let GDI know that it has to pay attention to the clip object:
|
|
|
|
pco->fjOptions |= OC_BANK_CLIP;
|
|
|
|
// We have to honour the original clip object's rclBounds, so
|
|
// intersect the drawing region with it, then convert to absolute
|
|
// coordinates:
|
|
|
|
pbnk->rclDraw.left
|
|
= max(prclDraw->left, pco->rclBounds.left) + xOffset;
|
|
pbnk->rclDraw.right
|
|
= min(prclDraw->right, pco->rclBounds.right) + xOffset;
|
|
pbnk->rclDraw.top
|
|
= max(prclDraw->top, pco->rclBounds.top) + yOffset;
|
|
pbnk->rclDraw.bottom
|
|
= min(prclDraw->bottom, pco->rclBounds.bottom) + yOffset;
|
|
}
|
|
|
|
if ((pbnk->rclDraw.left > pbnk->rclDraw.right)
|
|
|| (pbnk->rclDraw.top > pbnk->rclDraw.bottom))
|
|
{
|
|
// It's conceivable that we could get a situation where we have
|
|
// an empty draw rectangle. Make sure we won't puke on our shoes:
|
|
|
|
pbnk->rclDraw.left = 0;
|
|
pbnk->rclDraw.right = 0;
|
|
pbnk->rclDraw.top = 0;
|
|
pbnk->rclDraw.bottom = 0;
|
|
}
|
|
|
|
if (!ppdev->pfnBankCompute(ppdev, &pbnk->rclDraw, &pco->rclBounds,
|
|
&cjOffset, &pbnk->iBank))
|
|
{
|
|
// The drawing operation spans multiple banks. If the original
|
|
// clip object was marked as trivial, we have to make sure to
|
|
// change it to rectangular so that GDI knows to pay attention
|
|
// to the bounds of the bank:
|
|
|
|
if (pco->iDComplexity == DC_TRIVIAL)
|
|
pco->iDComplexity = DC_RECT;
|
|
}
|
|
|
|
pbnk->ppdev = ppdev;
|
|
pbnk->pco = pco;
|
|
pbnk->pso = ppdev->psoBank;
|
|
|
|
// Convert rclBounds and pvScan0 from absolute coordinates back to
|
|
// relative. When GDI calculates where to start drawing, it computes
|
|
// pjDst = pso->pvScan0 + y * pso->lDelta + (x << cPelSize), where 'x'
|
|
// and 'y' are relative coordinates. We'll muck with pvScan0 to get
|
|
// it pointing to the correct spot in the bank:
|
|
|
|
pbnk->pso->pvScan0 = ppdev->pjScreen - cjOffset
|
|
+ yOffset * ppdev->lDelta
|
|
+ (xOffset << ppdev->cPelSize);
|
|
|
|
ASSERTDD((((ULONG_PTR) pbnk->pso->pvScan0) & 3) == 0,
|
|
"Off-screen bitmaps must be dword aligned");
|
|
|
|
pco->rclBounds.left -= xOffset;
|
|
pco->rclBounds.right -= xOffset;
|
|
pco->rclBounds.top -= yOffset;
|
|
pco->rclBounds.bottom -= yOffset;
|
|
|
|
// Enable banking and map in bank iBank:
|
|
|
|
vBankSelectMode(ppdev, BANK_ON);
|
|
vBankMap(ppdev, pbnk->iBank);
|
|
}
|
|
|
|
/******************************Public*Routine******************************\
|
|
* BOOL bBankEnum
|
|
*
|
|
* If there is another bank to be drawn on, maps in the bank and returns
|
|
* TRUE and the CLIPOBJ and SURFOBJ to be passed in the banked call-back.
|
|
*
|
|
* If there were no more banks to be drawn, returns FALSE.
|
|
*
|
|
\**************************************************************************/
|
|
|
|
BOOL bBankEnum(
|
|
BANK* pbnk)
|
|
{
|
|
LONG iBank;
|
|
LONG cjOffset;
|
|
PDEV* ppdev;
|
|
CLIPOBJ* pco;
|
|
LONG xOffset;
|
|
LONG yOffset;
|
|
|
|
ppdev = pbnk->ppdev;
|
|
pco = pbnk->pco;
|
|
xOffset = ppdev->xOffset;
|
|
yOffset = ppdev->yOffset;
|
|
|
|
// We check here to see if we have to handle the second part of
|
|
// a broken raster. Recall that pbnk->rclDraw is in absolute
|
|
// coordinates, but pco->rclBounds is in relative coordinates:
|
|
|
|
if (pbnk->rclDraw.right - xOffset != pco->rclBounds.right)
|
|
{
|
|
// The clip object's 'top' and 'bottom' are already correct:
|
|
|
|
pco->rclBounds.left = pco->rclBounds.right;
|
|
pco->rclBounds.right = pbnk->rclDraw.right - xOffset;
|
|
|
|
pbnk->pso->pvScan0 = (BYTE*) pbnk->pso->pvScan0 - ppdev->cjBank;
|
|
pbnk->iBank++;
|
|
|
|
vBankMap(ppdev, pbnk->iBank);
|
|
|
|
return(TRUE);
|
|
}
|
|
|
|
if (pbnk->rclDraw.bottom > pco->rclBounds.bottom + yOffset)
|
|
{
|
|
// Advance the drawing area 'top' to account for the bank we've
|
|
// just finished, and map in the new bank:
|
|
|
|
pbnk->rclDraw.top = pco->rclBounds.bottom + yOffset;
|
|
|
|
ppdev->pfnBankCompute(ppdev, &pbnk->rclDraw, &pco->rclBounds,
|
|
&cjOffset, &iBank);
|
|
|
|
// Convert rclBounds back from absolute to relative coordinates:
|
|
|
|
pco->rclBounds.left -= xOffset;
|
|
pco->rclBounds.right -= xOffset;
|
|
pco->rclBounds.top -= yOffset;
|
|
pco->rclBounds.bottom -= yOffset;
|
|
|
|
// If we just finished handling a broken raster, we've already
|
|
// got the bank mapped in:
|
|
|
|
if (iBank != pbnk->iBank)
|
|
{
|
|
pbnk->iBank = iBank;
|
|
pbnk->pso->pvScan0 = (BYTE*) pbnk->pso->pvScan0 - ppdev->cjBank;
|
|
|
|
vBankMap(ppdev, iBank);
|
|
}
|
|
|
|
return(TRUE);
|
|
}
|
|
|
|
// We're done! Turn off banking and reset the clip object if necessary:
|
|
|
|
vBankSelectMode(ppdev, BANK_OFF);
|
|
|
|
if (pco != ppdev->pcoBank)
|
|
{
|
|
pco->rclBounds = pbnk->rclSaveBounds;
|
|
pco->iDComplexity = pbnk->iSaveDComplexity;
|
|
pco->fjOptions = pbnk->fjSaveOptions;
|
|
}
|
|
|
|
return(FALSE);
|
|
}
|
|
|
|
#endif // GDI_BANKING
|
|
|
|
/******************************Public*Routine******************************\
|
|
* VOID vAlignedCopy
|
|
*
|
|
* Copies the given portion of a bitmap, using dword alignment for the
|
|
* screen. Note that this routine has no notion of banking.
|
|
*
|
|
* Updates ppjDst and ppjSrc to point to the beginning of the next scan.
|
|
*
|
|
\**************************************************************************/
|
|
|
|
VOID vAlignedCopy(
|
|
BYTE** ppjDst,
|
|
LONG lDstDelta,
|
|
BYTE** ppjSrc,
|
|
LONG lSrcDelta,
|
|
LONG cjScan,
|
|
LONG cyScan,
|
|
BOOL bDstIsScreen)
|
|
{
|
|
BYTE* pjDst;
|
|
BYTE* pjSrc;
|
|
LONG cjMiddle;
|
|
LONG culMiddle;
|
|
LONG cjStartPhase;
|
|
LONG cjEndPhase;
|
|
|
|
pjSrc = *ppjSrc;
|
|
pjDst = *ppjDst;
|
|
|
|
cjStartPhase = (LONG)((0 - ((bDstIsScreen) ? (ULONG_PTR) pjDst
|
|
: (ULONG_PTR) pjSrc)) & 3);
|
|
cjMiddle = cjScan - cjStartPhase;
|
|
|
|
if (cjMiddle < 0)
|
|
{
|
|
cjStartPhase = 0;
|
|
cjMiddle = cjScan;
|
|
}
|
|
|
|
lSrcDelta -= cjScan;
|
|
lDstDelta -= cjScan; // Account for middle
|
|
|
|
cjEndPhase = cjMiddle & 3;
|
|
culMiddle = cjMiddle >> 2;
|
|
|
|
#if defined(i386)
|
|
{
|
|
_asm {
|
|
mov eax,lSrcDelta ; eax = Source delta accounting for middle
|
|
mov ebx,lDstDelta ; ebx = Dest delta accounting for middle
|
|
mov edx,cyScan ; edx = Count of scans
|
|
mov esi,pjSrc ; esi = Source pointer
|
|
mov edi,pjDst ; edi = Dest pointer
|
|
|
|
Next_Scan:
|
|
|
|
mov ecx,cjStartPhase
|
|
rep movsb
|
|
|
|
mov ecx,culMiddle
|
|
rep movsd
|
|
|
|
mov ecx,cjEndPhase
|
|
rep movsb
|
|
|
|
add esi,eax ; Advance to next scan
|
|
add edi,ebx
|
|
dec edx
|
|
jnz Next_Scan
|
|
|
|
mov eax,ppjSrc ; Save the updated pointers
|
|
mov ebx,ppjDst
|
|
mov [eax],esi
|
|
mov [ebx],edi
|
|
}
|
|
}
|
|
#else
|
|
{
|
|
LONG i;
|
|
|
|
// Because of its bus design, we cannot do a straight memcpy
|
|
// to/from the frame buffer on an Alpha -- we have to go
|
|
// through WRITE/READ macros.
|
|
|
|
// First, to be safe, flush all pending I/O:
|
|
|
|
MEMORY_BARRIER();
|
|
|
|
if (bDstIsScreen)
|
|
{
|
|
// Align to the destination (implying that the source may be
|
|
// unaligned):
|
|
|
|
for (; cyScan > 0; cyScan--)
|
|
{
|
|
for (i = cjStartPhase; i > 0; i--)
|
|
{
|
|
WRITE_REGISTER_UCHAR(pjDst, *pjSrc);
|
|
pjSrc++;
|
|
pjDst++;
|
|
}
|
|
|
|
for (i = culMiddle; i > 0; i--)
|
|
{
|
|
WRITE_REGISTER_ULONG(pjDst, *((ULONG UNALIGNED *) pjSrc));
|
|
pjSrc += sizeof(ULONG UNALIGNED);
|
|
pjDst += sizeof(ULONG);
|
|
}
|
|
|
|
for (i = cjEndPhase; i > 0; i--)
|
|
{
|
|
WRITE_REGISTER_UCHAR(pjDst, *pjSrc);
|
|
pjSrc++;
|
|
pjDst++;
|
|
}
|
|
|
|
pjSrc += lSrcDelta;
|
|
pjDst += lDstDelta;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// Align to the source (implying that the destination may be
|
|
// unaligned):
|
|
|
|
for (; cyScan > 0; cyScan--)
|
|
{
|
|
for (i = cjStartPhase; i > 0; i--)
|
|
{
|
|
*pjDst = READ_REGISTER_UCHAR(pjSrc);
|
|
pjSrc++;
|
|
pjDst++;
|
|
}
|
|
|
|
for (i = culMiddle; i > 0; i--)
|
|
{
|
|
#if !defined(ALPHA)
|
|
{
|
|
*((ULONG UNALIGNED *) pjDst) = READ_REGISTER_ULONG(pjSrc);
|
|
}
|
|
#else
|
|
{
|
|
// There are some board 864/964 boards where we can't
|
|
// do dword reads from the frame buffer without
|
|
// crashing the Avanti.
|
|
|
|
*((ULONG UNALIGNED *) pjDst) =
|
|
((ULONG) READ_REGISTER_UCHAR(pjSrc + 3) << 24) |
|
|
((ULONG) READ_REGISTER_UCHAR(pjSrc + 2) << 16) |
|
|
((ULONG) READ_REGISTER_UCHAR(pjSrc + 1) << 8) |
|
|
((ULONG) READ_REGISTER_UCHAR(pjSrc));
|
|
}
|
|
#endif
|
|
|
|
pjSrc += sizeof(ULONG);
|
|
pjDst += sizeof(ULONG UNALIGNED);
|
|
}
|
|
|
|
for (i = cjEndPhase; i > 0; i--)
|
|
{
|
|
*pjDst = READ_REGISTER_UCHAR(pjSrc);
|
|
pjSrc++;
|
|
pjDst++;
|
|
}
|
|
|
|
pjSrc += lSrcDelta;
|
|
pjDst += lDstDelta;
|
|
}
|
|
}
|
|
|
|
*ppjSrc = pjSrc; // Save the updated pointers
|
|
*ppjDst = pjDst;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/******************************Public*Routine******************************\
|
|
* VOID vPutBits
|
|
*
|
|
* Copies the bits from the given surface to the screen, using the memory
|
|
* aperture. Must be pre-clipped.
|
|
*
|
|
\**************************************************************************/
|
|
|
|
VOID vPutBits(
|
|
PDEV* ppdev,
|
|
SURFOBJ* psoSrc,
|
|
RECTL* prclDst, // Absolute coordinates!
|
|
POINTL* pptlSrc) // Absolute coordinates!
|
|
{
|
|
RECTL rclDraw;
|
|
RECTL rclBank;
|
|
LONG iBank;
|
|
LONG cjOffset;
|
|
LONG cyScan;
|
|
LONG lDstDelta;
|
|
LONG lSrcDelta;
|
|
BYTE* pjDst;
|
|
BYTE* pjSrc;
|
|
LONG cjScan;
|
|
LONG iNewBank;
|
|
LONG cjRemainder;
|
|
|
|
// We need a local copy of 'rclDraw' because we'll be iteratively
|
|
// modifying 'top' and passing the modified rectangle back into
|
|
// bBankComputeNonPower2:
|
|
|
|
rclDraw = *prclDst;
|
|
|
|
ASSERTDD((rclDraw.left >= 0) &&
|
|
(rclDraw.top >= 0) &&
|
|
(rclDraw.right <= ppdev->cxMemory) &&
|
|
(rclDraw.bottom <= ppdev->cyMemory),
|
|
"Rectangle wasn't fully clipped");
|
|
|
|
// Compute the first bank, enable banking, then map in iBank:
|
|
|
|
ppdev->pfnBankCompute(ppdev, &rclDraw, &rclBank, &cjOffset, &iBank);
|
|
vBankSelectMode(ppdev, BANK_ON);
|
|
vBankMap(ppdev, iBank);
|
|
|
|
// Calculate the pointer to the upper-left corner of both rectangles:
|
|
|
|
lDstDelta = ppdev->lDelta;
|
|
pjDst = ppdev->pjScreen + rclDraw.top * lDstDelta
|
|
+ (rclDraw.left << ppdev->cPelSize)
|
|
- cjOffset;
|
|
|
|
lSrcDelta = psoSrc->lDelta;
|
|
pjSrc = (BYTE*) psoSrc->pvScan0 + pptlSrc->y * lSrcDelta
|
|
+ (pptlSrc->x << ppdev->cPelSize);
|
|
|
|
while (TRUE)
|
|
{
|
|
cjScan = (rclBank.right - rclBank.left) << ppdev->cPelSize;
|
|
cyScan = (rclBank.bottom - rclBank.top);
|
|
|
|
vAlignedCopy(&pjDst, lDstDelta, &pjSrc, lSrcDelta, cjScan, cyScan,
|
|
TRUE); // Screen is the destination
|
|
|
|
if (rclDraw.right != rclBank.right)
|
|
{
|
|
// Handle the second part of the broken raster:
|
|
|
|
iBank++;
|
|
|
|
vBankMap(ppdev, iBank);
|
|
|
|
// Number of bytes we've yet to do on the broken scan:
|
|
|
|
cjRemainder = (rclDraw.right - rclBank.right) << ppdev->cPelSize;
|
|
|
|
// Account for the fact that we're now one bank lower in the
|
|
// destination:
|
|
|
|
pjDst -= ppdev->cjBank;
|
|
|
|
// Implicitly back up the source and destination pointers to the
|
|
// unfinished portion of the scan:
|
|
|
|
#if GDI_BANKING
|
|
{
|
|
memcpy(pjDst + (cjScan - lDstDelta),
|
|
pjSrc + (cjScan - lSrcDelta),
|
|
cjRemainder);
|
|
}
|
|
#else
|
|
{
|
|
BYTE* pjTmpDst = pjDst + (cjScan - lDstDelta);
|
|
BYTE* pjTmpSrc = pjSrc + (cjScan - lSrcDelta);
|
|
|
|
vAlignedCopy(&pjTmpDst, 0, &pjTmpSrc, 0, cjRemainder, 1,
|
|
TRUE); // Screen is the destination
|
|
}
|
|
#endif
|
|
}
|
|
|
|
if (rclDraw.bottom > rclBank.bottom)
|
|
{
|
|
rclDraw.top = rclBank.bottom;
|
|
ppdev->pfnBankCompute(ppdev, &rclDraw, &rclBank, &cjOffset,
|
|
&iNewBank);
|
|
|
|
// If we just handled the second part of a broken raster,
|
|
// then we've already got the bank correctly mapped in:
|
|
|
|
if (iNewBank != iBank)
|
|
{
|
|
pjDst -= ppdev->cjBank;
|
|
iBank = iNewBank;
|
|
|
|
vBankMap(ppdev, iBank);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// We're done! Turn off banking and leave:
|
|
|
|
vBankSelectMode(ppdev, BANK_OFF);
|
|
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
/******************************Public*Routine******************************\
|
|
* VOID vGetBits
|
|
*
|
|
* Copies the bits to the given surface from the screen, using the memory
|
|
* aperture. Must be pre-clipped.
|
|
*
|
|
\**************************************************************************/
|
|
|
|
VOID vGetBits(
|
|
PDEV* ppdev,
|
|
SURFOBJ* psoDst,
|
|
RECTL* prclDst, // Absolute coordinates!
|
|
POINTL* pptlSrc) // Absolute coordinates!
|
|
{
|
|
RECTL rclDraw;
|
|
RECTL rclBank;
|
|
LONG iBank;
|
|
LONG cjOffset;
|
|
LONG cyScan;
|
|
LONG lDstDelta;
|
|
LONG lSrcDelta;
|
|
BYTE* pjDst;
|
|
BYTE* pjSrc;
|
|
LONG cjScan;
|
|
LONG iNewBank;
|
|
LONG cjRemainder;
|
|
|
|
rclDraw.left = pptlSrc->x;
|
|
rclDraw.top = pptlSrc->y;
|
|
rclDraw.right = rclDraw.left + (prclDst->right - prclDst->left);
|
|
rclDraw.bottom = rclDraw.top + (prclDst->bottom - prclDst->top);
|
|
|
|
ASSERTDD((rclDraw.left >= 0) &&
|
|
(rclDraw.top >= 0) &&
|
|
(rclDraw.right <= ppdev->cxMemory) &&
|
|
(rclDraw.bottom <= ppdev->cyMemory),
|
|
"Rectangle wasn't fully clipped");
|
|
|
|
// Compute the first bank, enable banking, then map in iBank.
|
|
|
|
ppdev->pfnBankCompute(ppdev, &rclDraw, &rclBank, &cjOffset, &iBank);
|
|
vBankSelectMode(ppdev, BANK_ON);
|
|
vBankMap(ppdev, iBank);
|
|
|
|
// Calculate the pointer to the upper-left corner of both rectangles:
|
|
|
|
lSrcDelta = ppdev->lDelta;
|
|
pjSrc = ppdev->pjScreen + rclDraw.top * lSrcDelta
|
|
+ (rclDraw.left << ppdev->cPelSize)
|
|
- cjOffset;
|
|
|
|
lDstDelta = psoDst->lDelta;
|
|
pjDst = (BYTE*) psoDst->pvScan0 + prclDst->top * lDstDelta
|
|
+ (prclDst->left << ppdev->cPelSize);
|
|
|
|
while (TRUE)
|
|
{
|
|
cjScan = (rclBank.right - rclBank.left) << ppdev->cPelSize;
|
|
cyScan = (rclBank.bottom - rclBank.top);
|
|
|
|
vAlignedCopy(&pjDst, lDstDelta, &pjSrc, lSrcDelta, cjScan, cyScan,
|
|
FALSE); // Screen is the source
|
|
|
|
if (rclDraw.right != rclBank.right)
|
|
{
|
|
// Handle the second part of the broken raster:
|
|
|
|
iBank++;
|
|
|
|
vBankMap(ppdev, iBank);
|
|
|
|
// Number of bytes we've yet to do on the broken scan:
|
|
|
|
cjRemainder = (rclDraw.right - rclBank.right) << ppdev->cPelSize;
|
|
|
|
// Account for the fact that we're now one bank lower in the
|
|
// source:
|
|
|
|
pjSrc -= ppdev->cjBank;
|
|
|
|
// Implicitly back up the source and destination pointers to the
|
|
// unfinished portion of the scan. Note that we don't have to
|
|
// advance the pointers because they're already pointing to the
|
|
// beginning of the next scan:
|
|
|
|
#if GDI_BANKING
|
|
{
|
|
memcpy(pjDst + (cjScan - lDstDelta),
|
|
pjSrc + (cjScan - lSrcDelta),
|
|
cjRemainder);
|
|
}
|
|
#else
|
|
{
|
|
BYTE* pjTmpDst = pjDst + (cjScan - lDstDelta);
|
|
BYTE* pjTmpSrc = pjSrc + (cjScan - lSrcDelta);
|
|
|
|
vAlignedCopy(&pjTmpDst, 0, &pjTmpSrc, 0, cjRemainder, 1,
|
|
FALSE); // Screen is the source
|
|
}
|
|
#endif
|
|
}
|
|
|
|
if (rclDraw.bottom > rclBank.bottom)
|
|
{
|
|
rclDraw.top = rclBank.bottom;
|
|
ppdev->pfnBankCompute(ppdev, &rclDraw, &rclBank, &cjOffset,
|
|
&iNewBank);
|
|
|
|
// If we just handled the second part of a broken raster,
|
|
// then we've already got the bank correctly mapped in:
|
|
|
|
if (iNewBank != iBank)
|
|
{
|
|
pjSrc -= ppdev->cjBank;
|
|
iBank = iNewBank;
|
|
|
|
vBankMap(ppdev, iBank);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// We're done! Turn off banking and leave:
|
|
|
|
vBankSelectMode(ppdev, BANK_OFF);
|
|
|
|
return;
|
|
}
|
|
}
|
|
}
|