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722 lines
22 KiB
722 lines
22 KiB
/*******************************Module*Header*****************************\
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*
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* Copyright (c) 1992-1999 Microsoft Corporation
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* Copyright (c) 1992 Digital Equipment Corporation
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*
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* Module Name:
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*
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* tiler.cxx
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*
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* Abstract:
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*
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* This module implements code to copy a pattern to a target surface.
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*
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* Author:
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*
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* David N. Cutler (davec) 4-May-1992
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*
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* Rewritten in C by:
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*
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* Eric Rehm ([email protected]) 15-July-1992
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*
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* Environment:
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*
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* Kernel mode only.
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*
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* N.B. The AMD64 platform does not enforce alignment checks in kernel
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* mode. Therefore, even though this function deals with data that
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* is unaligned, avoidance of unaligned operations is not required.
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*
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* Revision History:
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*
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\*************************************************************************/
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#include "precomp.hxx"
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VOID CopyPattern( PULONG pulTrg, LONG culFill, LONG hiPat, LONG loPat);
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VOID MergePattern( PULONG pulTrg, LONG culFill, LONG hiPat, LONG loPat);
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/****************************Public*Routine******************************\
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*
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* extern "C" VOID
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* vFetchAndCopy (
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* IN PFETCHFRAME pff
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* )
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*
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* Routine Description:
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*
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* This routine repeatedly tiles one scan line of an aligned pattern.
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*
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* Arguments:
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*
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* pff - Supplies a pointer to a fetch frame.
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*
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* Return Value:
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*
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* None.
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*
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\*************************************************************************/
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extern "C" VOID vFetchAndCopy
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(
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FETCHFRAME *pff
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)
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{
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PULONG pulTrg; // target surface address
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PULONG pulTrgEnd; // ending targe surface address
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PULONG pulPat; // base pattern address
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PULONG pulPatCur; // current pattern address
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PULONG pulPatEnd; // ending pattern address
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ULONG xPat; // pattern offset
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ULONG cxPat; // pattern width in pixels
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ULONG culFill; // fill size in longwords
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ULONG loPat, hiPat; // low, hi part of 8-byte pattern
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// Make copies of some things
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pulTrg = (PULONG) pff->pvTrg; // starting target surface address (t0)
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pulPat = (PULONG) pff->pvPat; // base pattern address (t1)
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xPat = pff->xPat; // pattern offset in bytes (t2)
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cxPat = pff->cxPat; // pattern width in pixels (t3)
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culFill = pff->culFill; // Size of fill in longwords
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pulTrgEnd = pulTrg + culFill; // compute ending target address (t4)
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pulPatCur = (PULONG) ((PUCHAR) pulPat + xPat);
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// compute current pattern address (t5)
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if (cxPat == 8) // check if pattern is exactly 8 pels
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{
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loPat = *pulPatCur; // get low part of 8-byte pattern
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if (xPat == 0)
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{
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hiPat = *(pulPatCur + 1); // get hi part of 8-byte pattern
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}
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else
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{
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hiPat = *pulPat; // get hi part of 8-byte pattern
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}
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CopyPattern( pulTrg, culFill, hiPat, loPat); // do a 4 or 8-byte copy
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}
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else
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{
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//
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// The pattern is not 8 bytes in width
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// or cannot be moved 8 bytes at a time
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//
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pulPatEnd = (PULONG) ((PUCHAR) pulPat + cxPat);
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// ending pattern address
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while (pulTrg < pulTrgEnd)
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{
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*pulTrg = *pulPatCur; // set target to 4-byte pattern value
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pulTrg += 1; // advance the target ptr one longword
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pulPatCur += 1; // advance the pattern pixel offset
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if (pulPatCur == pulPatEnd) // Check if at end of pattern
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{
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pulPatCur = pulPat; // get starting pattern address
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}
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}
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}
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} // end vFetchAndCopy
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/****************************Public*Routine******************************\
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*
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* extern "C" VOID
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* vFetchShiftAndCopy (
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* IN PFETCHFRAME pff
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* )
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*
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* Routine Description:
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*
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* This routine repeatedly tiles one scan line of an unaligned pattern
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* using rop (P).
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*
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* Arguments:
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*
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* pff - Supplies a pointer to a fetch frame.
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*
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* Return Value:
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*
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* None.
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*
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\*************************************************************************/
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extern "C" VOID vFetchShiftAndCopy
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(
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FETCHFRAME *pff
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)
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{
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PULONG pulTrg; // target surface address
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PULONG pulTrgEnd; // ending targe surface address
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ULONG *pulPat; // base pattern address
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ULONG *pulPatCur; // current pattern address
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ULONG xPat; // pattern offset
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ULONG cxPat; // pattern width in pixels
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ULONG culFill; // fill size in longwords
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ULONG loPat, hiPat; // low, hi part of 8-byte pattern
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// Make copies of some things
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pulTrg = (PULONG) pff->pvTrg; // starting target surface address (t0)
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pulPat = (PULONG) pff->pvPat; // base pattern address (t1)
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xPat = pff->xPat; // pattern offset in bytes (t2)
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cxPat = pff->cxPat; // pattern width in pixels (t3)
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culFill = pff->culFill; // Size of fill in longwords
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pulTrgEnd = pulTrg + culFill; // compute ending target address (t4)
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pulPatCur = (ULONG *) ((PUCHAR) pulPat + xPat);
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// compute current pattern address (t5)
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if (cxPat == 8) // check if pattern is exactly 8 pels
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{
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loPat = *pulPatCur; // get low part of 8-byte pattern
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xPat +=4; // get hi part of 8-byte pattern
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if (xPat >= cxPat)
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{
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xPat -= cxPat;
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}
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hiPat = *((ULONG *) ((PUCHAR) pulPat + xPat));
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CopyPattern( pulTrg, culFill, hiPat, loPat); // do a 4 or 8-byte copy
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}
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else
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{
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//
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// The pattern is not 8 bytes in width
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// or cannot be moved 8 bytes at a time
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//
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while (pulTrg < pulTrgEnd)
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{
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*pulTrg = *pulPatCur;
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// set target to 4-byte pattern value
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pulTrg += 1; // advance the target ptr one longword
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xPat += 4;
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if (xPat >= cxPat)
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{
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xPat -= cxPat;
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}
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pulPatCur = (ULONG *) ((PUCHAR) pulPat + xPat);
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}
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}
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} // end vFetchShiftAndCopy
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/****************************Public*Routine******************************\
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*
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* extern "C" VOID
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* vFetchNotAndCopy (
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* IN PFETCHFRAME pff
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* )
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*
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* Routine Description:
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*
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* This routine repeatedly tiles one scan line of an aligned pattern
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* using rop (Pn).
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*
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* Arguments:
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*
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* pff - Supplies a pointer to a fetch frame.
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*
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* Return Value:
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*
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* None.
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*
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\*************************************************************************/
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extern "C" VOID vFetchNotAndCopy
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(
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FETCHFRAME *pff
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)
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{
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PULONG pulTrg; // target surface address
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PULONG pulTrgEnd; // ending targe surface address
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PULONG pulPat; // base pattern address
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PULONG pulPatCur; // current pattern address
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PULONG pulPatEnd; // ending pattern address
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ULONG xPat; // pattern offset
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ULONG cxPat; // pattern width in pixels
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ULONG culFill; // fill size in longwords
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ULONG loPat, hiPat; // low, hi part of 8-byte pattern
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// Make copies of some things
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pulTrg = (PULONG) pff->pvTrg; // starting target surface address (t0)
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pulPat = (PULONG) pff->pvPat; // base pattern address (t1)
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xPat = pff->xPat; // pattern offset in bytes (t2)
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cxPat = pff->cxPat; // pattern width in pixels (t3)
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culFill = pff->culFill; // Size of fill in longwords
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pulTrgEnd = pulTrg + culFill; // compute ending target address (t4)
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pulPatCur = (PULONG) ((PUCHAR) pulPat + xPat);
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// compute current pattern address (t5)
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if (cxPat == 8) // check if pattern is exactly 8 pels
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{
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loPat = *pulPatCur; // get low part of 8-byte pattern
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if (xPat == 0)
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{
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hiPat = *(pulPatCur + 1); // get hi part of 8-byte pattern
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}
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else
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{
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hiPat = *pulPat; // get hi part of 8-byte pattern
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}
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loPat = ~loPat; // complement pattern
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hiPat = ~hiPat;
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CopyPattern( pulTrg, culFill, hiPat, loPat); // do a 4 or 8-byte copy
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}
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else
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{
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//
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// The pattern is not 8 bytes in width
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// or cannot be moved 8 bytes at a time
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//
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pulPatEnd = (PULONG) ((PUCHAR) pulPat + cxPat);
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// ending pattern address
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while (pulTrg < pulTrgEnd)
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{
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*pulTrg = ~(*pulPatCur);
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// set target to complement of 4-byte pattern value
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pulTrg += 1; // advance the target ptr one longword
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pulPatCur += 1; // advance the pattern pixel offset
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if (pulPatCur == pulPatEnd) // Check if at end of pattern
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{
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pulPatCur = pulPat; // get starting pattern address
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}
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}
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}
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} // end vFetchNotAndCopy
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/****************************Public*Routine******************************\
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*
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* extern "C" VOID
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* vFetchShiftNotAndCopy (
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* IN PFETCHFRAME pff
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* )
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*
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* Routine Description:
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*
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* This routine repeatedly tiles one scan line of an unaligned pattern
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* using rop (Pn).
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*
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* Arguments:
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*
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* pff - Supplies a pointer to a fetch frame.
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*
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* Return Value:
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*
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* None.
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*
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\*************************************************************************/
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extern "C" VOID vFetchShiftNotAndCopy
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(
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FETCHFRAME *pff
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)
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{
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PULONG pulTrg; // target surface address
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PULONG pulTrgEnd; // ending targe surface address
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ULONG *pulPat; // base pattern address
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ULONG *pulPatCur; // current pattern address
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ULONG xPat; // pattern offset
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ULONG cxPat; // pattern width in pixels
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ULONG culFill; // fill size in longwords
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ULONG loPat, hiPat; // low, hi part of 8-byte pattern
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// Make copies of some things
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pulTrg = (PULONG) pff->pvTrg; // starting target surface address (t0)
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pulPat = (PULONG) pff->pvPat; // base pattern address (t1)
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xPat = pff->xPat; // pattern offset in bytes (t2)
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cxPat = pff->cxPat; // pattern width in pixels (t3)
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culFill = pff->culFill; // Size of fill in longwords
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pulTrgEnd = pulTrg + culFill; // compute ending target address (t4)
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pulPatCur = (ULONG *) ((PUCHAR) pulPat + xPat);
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// compute current pattern address (t5)
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if (cxPat == 8) // check if pattern is exactly 8 pels
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{
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loPat = *pulPatCur;
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// get low part of 8-byte pattern
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xPat +=4; // get hi part of 8-byte pattern
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if (xPat >= cxPat)
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{
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xPat -= cxPat;
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}
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hiPat = *((ULONG *) ((PUCHAR) pulPat + xPat));
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loPat = ~loPat; // complement pattern
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hiPat = ~hiPat;
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CopyPattern( pulTrg, culFill, hiPat, loPat); // do a 4 or 8-byte copy
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}
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else
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{
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//
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// The pattern is not 8 bytes in width
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// or cannot be moved 8 bytes at a time
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//
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while (pulTrg < pulTrgEnd)
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{
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*pulTrg = ~(*pulPatCur);
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// set target to complemented 4-byte pattern value
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pulTrg += 1; // advance the target ptr one longword
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xPat += 4;
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if (xPat >= cxPat)
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{
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xPat -= cxPat;
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}
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pulPatCur = (ULONG *) ((PUCHAR) pulPat + xPat);
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}
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}
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} // end vFetchShiftNotAndCopy
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/****************************Private*Routine******************************\
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*
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* VOID CopyPattern( PULONG pulTrg, LONG culFill, LONG hiPat, LONG loPat)
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*
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* Routine Description:
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*
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* This routine contains common code for copying an 8-byte pattern to
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* a target surface.
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*
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* Arguments:
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*
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* culFill - Supplies the size of the fill in bytes.
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* loPat, hiPat - Supplies the 8-byte pattern to copy.
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* pulTrg - Supplies the starting target surface address.
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*
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* Return Value:
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*
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* None.
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*
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*
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\*************************************************************************/
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VOID CopyPattern
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(
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PULONG pulTrg, // Starting target surface address (t0)
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LONG culFill, // size of fill in longwords (a1)
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LONG hiPat, // hi part of pattern (v1)
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LONG loPat // lo part of pattern (v0)
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)
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{
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PULONG pulTrgEnd; // ending target surface address
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ULONG temp; // temp for swap
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pulTrgEnd = pulTrg + culFill;
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// ending target surface address(t4)
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//
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// If the fill size is not an even multiple of 8 bytes, then move one
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// longword and swap the pattern value.
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//
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if ((culFill & 0x01) != 0)
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{
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*pulTrg = loPat; // store low 4 bytes of pattern
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pulTrg += 1; // advance target ptr one longword
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culFill -= 1;
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if (culFill == 0) // if no more to move then we're done
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{
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return;
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}
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else // otherwise, swap 8-byte pattern value
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{
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temp = loPat;
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loPat = hiPat;
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hiPat = temp;
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}
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}
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//
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// Move 8-byte pattern value to target 8 bytes at a time.
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//
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pulTrgEnd -= 2; // ending segement address
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if ((culFill & 0x02) != 0) // check if even multiple of 8 bytes
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{
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while (pulTrg <= pulTrgEnd) // if not, move 8 bytes at a time
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{
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*pulTrg = loPat; // store 8-byte pattern value
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*(pulTrg + 1) = hiPat;
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pulTrg += 2; // advance target address
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}
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return;
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}
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else // move 16 bytes at a time
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{
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pulTrgEnd -= 2; // ending segement address
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while (pulTrg <= pulTrgEnd)
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{
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*pulTrg = loPat; // store 8-byte pattern value
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*(pulTrg + 1) = hiPat;
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*(pulTrg + 2) = loPat; // store 8-byte pattern value
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*(pulTrg + 3) = hiPat;
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pulTrg += 4; // advance target address
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}
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}
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}
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/****************************Public*Routine******************************\
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*
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* extern "C" VOID
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* vFetchAndMerge (
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* IN PFETCHFRAME pff
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* )
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*
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* Routine Description:
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*
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|
* This routine repeatedly tiles one scan line of an aligned pattern
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* using ropt (DPx).
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*
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* Arguments:
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*
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* pff - Supplies a pointer to a fetch frame.
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*
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* Return Value:
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*
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* None.
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*
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\*************************************************************************/
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extern "C" VOID vFetchAndMerge
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(
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FETCHFRAME *pff
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)
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{
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PULONG pulTrg; // target surface address
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PULONG pulTrgEnd; // ending targe surface address
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PULONG pulPat; // base pattern address
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PULONG pulPatCur; // current pattern address
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PULONG pulPatEnd; // ending pattern address
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ULONG xPat; // pattern offset
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ULONG cxPat; // pattern width in pixels
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ULONG culFill; // fill size in longwords
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ULONG loPat, hiPat; // low, hi part of 8-byte pattern
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|
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// Make copies of some things
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pulTrg = (PULONG) pff->pvTrg; // starting target surface address (t0)
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pulPat = (PULONG) pff->pvPat; // base pattern address (t1)
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xPat = pff->xPat; // pattern offset in bytes (t2)
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cxPat = pff->cxPat; // pattern width in pixels (t3)
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culFill = pff->culFill; // Size of fill in longwords
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pulTrgEnd = pulTrg + culFill; // compute ending target address (t4)
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pulPatCur = (PULONG) ((PUCHAR) pulPat + xPat);
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// compute current pattern address (t5)
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if (cxPat == 8) // check if pattern is exactly 8 pels
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{
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loPat = *pulPatCur; // get low part of 8-byte pattern
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if (xPat == 0)
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{
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hiPat = *(pulPatCur + 1); // get hi part of 8-byte pattern
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}
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else
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{
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hiPat = *pulPat; // get hi part of 8-byte pattern
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}
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MergePattern( pulTrg, culFill, hiPat, loPat); //do a 4 or 8-byte copy
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}
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else
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{
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//
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// The pattern is not 8 bytes in width
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// or cannot be moved 8 bytes at a time
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//
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pulPatEnd = (PULONG) ((PUCHAR) pulPat + cxPat);
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// ending pattern address
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|
|
while (pulTrg < pulTrgEnd)
|
|
{
|
|
*pulTrg = (*pulPatCur) ^ (*pulTrg);
|
|
// XOR 4-byte target with 4-byte pattern value
|
|
pulTrg += 1; // advance the target ptr one longword
|
|
pulPatCur += 1; // advance the pattern pixel offset
|
|
|
|
if (pulPatCur == pulPatEnd) // Check if at end of pattern
|
|
{
|
|
pulPatCur = pulPat; // get starting pattern address
|
|
}
|
|
}
|
|
}
|
|
} // end vFetchAndMerge
|
|
|
|
/****************************Public*Routine******************************\
|
|
*
|
|
* extern "C" VOID
|
|
* vFetchShiftAndMerge (
|
|
* IN PFETCHFRAME pff
|
|
* )
|
|
*
|
|
* Routine Description:
|
|
*
|
|
* This routine repeatedly tiles one scan line of an unaligned pattern
|
|
* using rop (P).
|
|
*
|
|
* Arguments:
|
|
*
|
|
* pff - Supplies a pointer to a fetch frame.
|
|
*
|
|
* Return Value:
|
|
*
|
|
* None.
|
|
*
|
|
\*************************************************************************/
|
|
|
|
extern "C" VOID vFetchShiftAndMerge
|
|
(
|
|
FETCHFRAME *pff
|
|
)
|
|
{
|
|
PULONG pulTrg; // target surface address
|
|
PULONG pulTrgEnd; // ending targe surface address
|
|
ULONG *pulPat; // base pattern address
|
|
ULONG *pulPatCur; // current pattern address
|
|
ULONG xPat; // pattern offset
|
|
ULONG cxPat; // pattern width in pixels
|
|
ULONG culFill; // fill size in longwords
|
|
ULONG loPat, hiPat; // low, hi part of 8-byte pattern
|
|
|
|
|
|
// Make copies of some things
|
|
|
|
pulTrg = (PULONG) pff->pvTrg; // starting target surface address (t0)
|
|
pulPat = (PULONG) pff->pvPat; // base pattern address (t1)
|
|
xPat = pff->xPat; // pattern offset in bytes (t2)
|
|
cxPat = pff->cxPat; // pattern width in pixels (t3)
|
|
culFill = pff->culFill; // Size of fill in longwords
|
|
|
|
pulTrgEnd = pulTrg + culFill; // compute ending target address (t4)
|
|
pulPatCur = (ULONG *) ((PUCHAR) pulPat + xPat);
|
|
// compute current pattern address (t5)
|
|
|
|
if (cxPat == 8) // check if pattern is exactly 8 pels
|
|
{
|
|
loPat = *pulPatCur;
|
|
// get low part of 8-byte pattern
|
|
xPat +=4; // get hi part of 8-byte pattern
|
|
if (xPat >= cxPat)
|
|
{
|
|
xPat -= cxPat;
|
|
}
|
|
hiPat = *((ULONG *) ((PUCHAR) pulPat + xPat));
|
|
|
|
MergePattern( pulTrg, culFill, hiPat, loPat); //do a 4 or 8-byte copy
|
|
}
|
|
|
|
else
|
|
{
|
|
//
|
|
// The pattern is not 8 bytes in width
|
|
// or cannot be moved 8 bytes at a time
|
|
//
|
|
while (pulTrg < pulTrgEnd)
|
|
{
|
|
*pulTrg = (*pulPatCur) ^ (*pulTrg);
|
|
// XOR 4-byte target with 4-byte pattern value
|
|
pulTrg += 1; // advance the target ptr one longword
|
|
xPat += 4;
|
|
if (xPat >= cxPat)
|
|
{
|
|
xPat -= cxPat;
|
|
}
|
|
pulPatCur = (ULONG *) ((PUCHAR) pulPat + xPat);
|
|
}
|
|
}
|
|
} // end vFetchShiftAndMerge
|
|
|
|
/****************************Private*Routine******************************\
|
|
*
|
|
* VOID MergePattern( PULONG pulTrg, LONG culFill, LONG hiPat, LONG loPat)
|
|
*
|
|
* Routine Description:
|
|
*
|
|
* This routine contains common code for merging an 8-byte pattern with
|
|
* a target surface.
|
|
*
|
|
* Arguments:
|
|
*
|
|
* culFill - Supplies the size of the fill in bytes.
|
|
* loPat, hiPat - Supplies the 8-byte pattern to merge.
|
|
* pulTrg - Supplies the starting target surface address.
|
|
*
|
|
* Return Value:
|
|
*
|
|
* None.
|
|
*
|
|
*
|
|
\*************************************************************************/
|
|
|
|
VOID MergePattern
|
|
(
|
|
PULONG pulTrg, // Starting target surface address (t0)
|
|
LONG culFill, // size of fill in longwords (a1)
|
|
LONG hiPat, // hi part of pattern (v1)
|
|
LONG loPat // lo part of pattern (v0)
|
|
)
|
|
{
|
|
PULONG pulTrgEnd; // ending target surface address
|
|
ULONG temp; // temp for swap
|
|
|
|
pulTrgEnd = pulTrg + culFill;
|
|
// ending target surface address(t4)
|
|
|
|
//
|
|
// If the fill size is not an even multiple of 8 bytes, then move one
|
|
// longword and swap the pattern value.
|
|
//
|
|
|
|
if ((culFill & 0x01) != 0)
|
|
{
|
|
*pulTrg = loPat ^ (*pulTrg); // XOR low 4 bytes of pattern w/ target
|
|
pulTrg += 1; // advance target ptr one longword
|
|
culFill -= 1;
|
|
if (culFill == 0) // if no more to move then we're done
|
|
{
|
|
return;
|
|
}
|
|
else // otherwise, swap 8-byte pattern value
|
|
{
|
|
temp = loPat;
|
|
loPat = hiPat;
|
|
hiPat = temp;
|
|
}
|
|
}
|
|
|
|
//
|
|
// Move 8-byte pattern value to target 8 bytes at a time.
|
|
//
|
|
|
|
pulTrgEnd -= 2; // ending segement address
|
|
while (pulTrg <= pulTrgEnd) // if not, move 8 bytes at a time
|
|
{
|
|
*pulTrg = loPat ^ (*pulTrg); // XOR 4-byte pattern value
|
|
pulTrg++; // advance target address
|
|
*pulTrg = hiPat ^ (*pulTrg); // XOR 4-byte pattern value
|
|
pulTrg++; // advance target address
|
|
}
|
|
return;
|
|
}
|