/******************************************************************************\
*
* $Workfile: stripmm.c $
*
* Do what you can with no line support.
*
* I implemented the horizontal and vertical strip functions using
* solid fills, and removed the usage of diagonal strips. With a little
* effort you could implement diagonal strips by doing solid fills while
* playing with lDelta. This is probably not worth the trouble.
*
* Copyright (c) 1992-1997 Microsoft Corporation
* Copyright (c) 1996-1997 Cirrus Logic, Inc.,
*
* $Log: S:/projects/drivers/ntsrc/display/STRIPMM.C_V $
*
* Rev 1.2 10 Jan 1997 15:40:18 PLCHU
*
*
* Rev 1.1 Oct 10 1996 15:39:22 unknown
*
*
* Rev 1.1 12 Aug 1996 16:55:04 frido
* Removed unaccessed local variables.
*
* chu01 : 01-02-97 5480 BitBLT enhancement
* chu02 : 01-09-97 Macro redefinition
*
\******************************************************************************/
#include "precomp.h"
#define count COMMAND_TOTAL_PACKETS
#define MM_DRAW_HORZ_STRIP(xy, cx, lDelta, cBpp)\
{\
ULONG ulDstAddr;\
\
ulDstAddr = xy;\
\
CP_MM_WAIT_FOR_BLT_COMPLETE(ppdev, pjBase);\
CP_MM_XCNT(ppdev, pjBase, (PELS_TO_BYTES(cx) - 1));\
CP_MM_YCNT(ppdev, pjBase, 0);\
CP_MM_DST_ADDR(ppdev, pjBase, ulDstAddr);\
CP_MM_START_BLT(ppdev, pjBase);\
}
#define MM_DRAW_VERT_STRIP(xy, cy, lDelta, cBpp)\
{\
ULONG ulDstAddr;\
\
ulDstAddr = xy;\
\
CP_MM_WAIT_FOR_BLT_COMPLETE(ppdev, pjBase);\
CP_MM_XCNT(ppdev, pjBase, (cBpp - 1));\
CP_MM_YCNT(ppdev, pjBase, (cy - 1));\
CP_MM_DST_ADDR(ppdev, pjBase, ulDstAddr);\
CP_MM_START_BLT(ppdev, pjBase);\
}
#define MM_DRAW_VERT_STRIP_FLIPPED(xy, cy, lDelta, cBpp)\
{\
ULONG ulDstAddr;\
\
ulDstAddr = xy - ((cy - 1) * lDelta);\
\
CP_MM_WAIT_FOR_BLT_COMPLETE(ppdev, pjBase);\
CP_MM_XCNT(ppdev, pjBase, (cBpp - 1));\
CP_MM_YCNT(ppdev, pjBase, (cy - 1));\
CP_MM_DST_ADDR(ppdev, pjBase, ulDstAddr);\
CP_MM_START_BLT(ppdev, pjBase);\
}
// chu01, chu02
#define MM_DRAW_HORZ_STRIP80(x, y, cx)\
{\
CP_MM_WAIT_FOR_BLT_COMPLETE(ppdev, pjBase);\
CP_MM_BLT_EXT_MODE(ppdev, pjBase, ENABLE_XY_POSITION);\
CP_MM_XCNT(ppdev, pjBase, (cx - 1));\
CP_MM_YCNT(ppdev, pjBase, 0);\
CP_MM_DST_ADDR(ppdev, pjBase, 0);\
CP_MM_DST_Y(ppdev, pjBase, y);\
CP_MM_DST_X(ppdev, pjBase, x);\
}
#define MM_DRAW_VERT_STRIP80(x, y, cy)\
{\
CP_MM_WAIT_FOR_BLT_COMPLETE(ppdev, pjBase);\
CP_MM_BLT_EXT_MODE(ppdev, pjBase, ENABLE_XY_POSITION);\
CP_MM_XCNT(ppdev, pjBase, 0);\
CP_MM_YCNT(ppdev, pjBase, (cy - 1));\
CP_MM_DST_ADDR(ppdev, pjBase, 0);\
CP_MM_DST_Y(ppdev, pjBase, y);\
CP_MM_DST_X(ppdev, pjBase, x);\
}
#define MM_DRAW_VERT_STRIP_FLIPPED80(x, y, cy)\
{\
CP_MM_WAIT_FOR_BLT_COMPLETE(ppdev, pjBase);\
CP_MM_BLT_EXT_MODE(ppdev, pjBase, ENABLE_XY_POSITION);\
CP_MM_XCNT(ppdev, pjBase, 0);\
CP_MM_YCNT(ppdev, pjBase, (cy - 1));\
CP_MM_DST_ADDR(ppdev, pjBase, 0);\
CP_MM_DST_Y(ppdev, pjBase, ((y - cy) + 1));\
CP_MM_DST_X(ppdev, pjBase, x);\
}
/******************************Public*Routine******************************\
* VOID vMmSolidHorizontal
*
* Draws left-to-right x-major near-horizontal lines using solid fills.
*
* Assumes fgRop, BgRop, and Color are already set correctly.
*
\**************************************************************************/
VOID vMmSolidHorizontal(
PDEV* ppdev,
STRIP* pStrip,
LINESTATE* pLineState)
{
BYTE* pjBase = ppdev->pjBase;
LONG cBpp = ppdev->cBpp;
LONG lDelta = ppdev->lDelta;
LONG cStrips = pStrip->cStrips;
PLONG pStrips = pStrip->alStrips;
LONG x = pStrip->ptlStart.x;
LONG y = pStrip->ptlStart.y;
LONG xy = PELS_TO_BYTES(x) + (lDelta * y);
LONG yInc = 1;
LONG i;
DISPDBG((2, "vMmSolidHorizontal"));
if (!(pStrip->flFlips & FL_FLIP_V))
{
//
// Horizontal strips ->
// ->
//
for (i = 0; i < cStrips; i++)
{
MM_DRAW_HORZ_STRIP(xy, *pStrips, lDelta, cBpp);
x += *pStrips;
xy += PELS_TO_BYTES(*pStrips); // x+
xy += lDelta; // y+
pStrips++;
}
y += cStrips;
}
else
{
//
// ->
// Horizontal strips ->
//
for (i = 0; i < cStrips; i++)
{
MM_DRAW_HORZ_STRIP(xy, *pStrips, lDelta, cBpp);
x += *pStrips;
xy += PELS_TO_BYTES(*pStrips); // x+
xy -= lDelta; // y+
pStrips++;
}
y -= cStrips;
}
pStrip->ptlStart.x = x;
pStrip->ptlStart.y = y;
}
/******************************Public*Routine******************************\
* VOID vMmSolidVertical
*
* Draws left-to-right y-major near-vertical lines using solid fills.
*
\**************************************************************************/
VOID vMmSolidVertical(
PDEV* ppdev,
STRIP* pStrip,
LINESTATE* pLineState)
{
BYTE* pjBase = ppdev->pjBase;
LONG cBpp = ppdev->cBpp;
LONG lDelta = ppdev->lDelta;
LONG cStrips = pStrip->cStrips;
PLONG pStrips = pStrip->alStrips;
LONG x = pStrip->ptlStart.x;
LONG y = pStrip->ptlStart.y;
LONG xy = PELS_TO_BYTES(x) + (lDelta * y);
LONG i;
DISPDBG((2, "vMmSolidVertical"));
if (!(pStrip->flFlips & FL_FLIP_V))
{
//
// |
// Vertical strips v
// |
// v
//
for (i = 0; i < cStrips; i++)
{
MM_DRAW_VERT_STRIP(xy, *pStrips, lDelta, cBpp);
y += *pStrips;
xy += cBpp; // x+
xy += (*pStrips * lDelta); // y+
pStrips++;
}
}
else
{
//
// ^
// Vertical strips |
// ^
// |
//
for (i = 0; i < cStrips; i++)
{
MM_DRAW_VERT_STRIP_FLIPPED(xy, *pStrips, lDelta, cBpp);
y -= *pStrips;
xy += cBpp; // x+
xy -= (*pStrips * lDelta); // y-
pStrips++;
}
}
x += cStrips;
pStrip->ptlStart.x = x;
pStrip->ptlStart.y = y;
}
/******************************Public*Routine******************************\
* VOID vMmStyledHorizontal
*
* Takes the list of strips that define the pixels that would be lit for
* a solid line, and breaks them into styling chunks according to the
* styling information that is passed in.
*
* This particular routine handles x-major lines that run left-to-right,
* and are comprised of horizontal strips. It draws the dashes using
* short-stroke vectors.
*
* The performance of this routine could be improved significantly if
* anyone cared enough about styled lines improve it.
*
\**************************************************************************/
VOID vMmStyledHorizontal(
PDEV* ppdev,
STRIP* pstrip,
LINESTATE* pls)
{
BYTE* pjBase = ppdev->pjBase;
LONG cBpp = ppdev->cBpp;
LONG lDelta = ppdev->lDelta;
LONG x = pstrip->ptlStart.x; // x position of start of first strip
LONG y = pstrip->ptlStart.y; // y position of start of first strip
LONG xy = PELS_TO_BYTES(x) + (lDelta * y);
LONG* plStrip = pstrip->alStrips; // Points to current strip
LONG cStrips = pstrip->cStrips; // Total number of strips we'll do
LONG dy;
LONG dylDelta;
LONG cStyle;
LONG cStrip;
LONG cThis;
ULONG bIsGap;
DISPDBG((2, "vMmStyledHorizontal"));
if (pstrip->flFlips & FL_FLIP_V)
{
// The minor direction of the line is 90 degrees, and the major
// direction is 0 (it's a left-to-right x-major line going up):
dy = -1;
dylDelta = -lDelta;
}
else
{
// The minor direction of the line is 270 degrees, and the major
// direction is 0 (it's a left-to-right x-major line going down):
dy = 1;
dylDelta = lDelta;
}
cStrip = *plStrip; // Number of pels in first strip
cStyle = pls->spRemaining; // Number of pels in first 'gap' or 'dash'
bIsGap = pls->ulStyleMask; // Tells whether in a 'gap' or a 'dash'
// ulStyleMask is non-zero if we're in the middle of a 'gap',
// and zero if we're in the middle of a 'dash':
if (bIsGap)
goto SkipAGap;
else
goto OutputADash;
PrepareToSkipAGap:
// Advance in the style-state array, so that we can find the next
// 'dot' that we'll have to display:
bIsGap = ~bIsGap;
pls->psp++;
if (pls->psp > pls->pspEnd)
pls->psp = pls->pspStart;
cStyle = *pls->psp;
// If 'cStrip' is zero, we also need a new strip:
if (cStrip != 0)
goto SkipAGap;
// Here, we're in the middle of a 'gap' where we don't have to
// display anything. We simply cycle through all the strips
// we can, keeping track of the current position, until we run
// out of 'gap':
while (TRUE)
{
// Each time we loop, we move to a new scan and need a new strip:
y += dy;
xy += dylDelta;
plStrip++;
cStrips--;
if (cStrips == 0)
goto AllDone;
cStrip = *plStrip;
SkipAGap:
cThis = min(cStrip, cStyle);
cStyle -= cThis;
cStrip -= cThis;
x += cThis;
xy += PELS_TO_BYTES(cThis);
if (cStyle == 0)
goto PrepareToOutputADash;
}
PrepareToOutputADash:
// Advance in the style-state array, so that we can find the next
// 'dot' that we'll have to display:
bIsGap = ~bIsGap;
pls->psp++;
if (pls->psp > pls->pspEnd)
pls->psp = pls->pspStart;
cStyle = *pls->psp;
// If 'cStrip' is zero, we also need a new strip.
if (cStrip != 0)
{
// There's more to be done in the current strip:
goto OutputADash;
}
// We've finished with the current strip:
while (TRUE)
{
// Each time we loop, we move to a new scan and need a new strip:
y += dy;
xy += dylDelta;
plStrip++;
cStrips--;
if (cStrips == 0)
goto AllDone;
cStrip = *plStrip;
OutputADash:
cThis = min(cStrip, cStyle);
cStyle -= cThis;
cStrip -= cThis;
MM_DRAW_HORZ_STRIP(xy, cThis, lDelta, cBpp);
x += cThis;
xy += PELS_TO_BYTES(cThis); // x+
if (cStyle == 0)
goto PrepareToSkipAGap;
}
AllDone:
// Update our state variables so that the next line can continue
// where we left off:
pls->spRemaining = cStyle;
pls->ulStyleMask = bIsGap;
pstrip->ptlStart.x = x;
pstrip->ptlStart.y = y;
}
/******************************Public*Routine******************************\
* VOID vMmStyledVertical
*
* Takes the list of strips that define the pixels that would be lit for
* a solid line, and breaks them into styling chunks according to the
* styling information that is passed in.
*
* This particular routine handles y-major lines that run left-to-right,
* and are comprised of vertical strips. It draws the dashes using
* short-stroke vectors.
*
* The performance of this routine could be improved significantly if
* anyone cared enough about styled lines improve it.
*
\**************************************************************************/
VOID vMmStyledVertical(
PDEV* ppdev,
STRIP* pstrip,
LINESTATE* pls)
{
BYTE* pjBase = ppdev->pjBase;
LONG cBpp = ppdev->cBpp;
LONG lDelta = ppdev->lDelta;
LONG x = pstrip->ptlStart.x; // x position of start of first strip
LONG y = pstrip->ptlStart.y; // y position of start of first strip
LONG xy = PELS_TO_BYTES(x) + (lDelta * y);
LONG* plStrip = pstrip->alStrips; // Points to current strip
LONG cStrips = pstrip->cStrips; // Total number of strips we'll do
LONG dy;
LONG dylDelta;
LONG cStyle;
LONG cStrip;
LONG cThis;
ULONG bIsGap;
DISPDBG((2, "vMmStyledVertical")) ;
if (pstrip->flFlips & FL_FLIP_V)
{
// The minor direction of the line is 0 degrees, and the major
// direction is 90 (it's a left-to-right y-major line going up):
dy = -1;
dylDelta = -lDelta;
}
else
{
// The minor direction of the line is 0 degrees, and the major
// direction is 270 (it's a left-to-right y-major line going down):
dy = 1;
dylDelta = lDelta;
}
cStrip = *plStrip; // Number of pels in first strip
cStyle = pls->spRemaining; // Number of pels in first 'gap' or 'dash'
bIsGap = pls->ulStyleMask; // Tells whether in a 'gap' or a 'dash'
// ulStyleMask is non-zero if we're in the middle of a 'gap',
// and zero if we're in the middle of a 'dash':
if (bIsGap)
goto SkipAGap;
else
goto OutputADash;
PrepareToSkipAGap:
// Advance in the style-state array, so that we can find the next
// 'dot' that we'll have to display:
bIsGap = ~bIsGap;
pls->psp++;
if (pls->psp > pls->pspEnd)
pls->psp = pls->pspStart;
cStyle = *pls->psp;
// If 'cStrip' is zero, we also need a new strip:
if (cStrip != 0)
goto SkipAGap;
// Here, we're in the middle of a 'gap' where we don't have to
// display anything. We simply cycle through all the strips
// we can, keeping track of the current position, until we run
// out of 'gap':
while (TRUE)
{
// Each time we loop, we move to a new column and need a new strip:
xy += cBpp;
x++;
plStrip++;
cStrips--;
if (cStrips == 0)
goto AllDone;
cStrip = *plStrip;
SkipAGap:
cThis = min(cStrip, cStyle);
cStyle -= cThis;
cStrip -= cThis;
if (dy > 0)
{
y += cThis;
xy += (cThis * lDelta);
}
else
{
y -= cThis;
xy -= (cThis * lDelta);
}
if (cStyle == 0)
goto PrepareToOutputADash;
}
PrepareToOutputADash:
// Advance in the style-state array, so that we can find the next
// 'dot' that we'll have to display:
bIsGap = ~bIsGap;
pls->psp++;
if (pls->psp > pls->pspEnd)
pls->psp = pls->pspStart;
cStyle = *pls->psp;
// If 'cStrip' is zero, we also need a new strip.
if (cStrip != 0)
{
// There's more to be done in the current strip:
goto OutputADash;
}
// We've finished with the current strip:
while (TRUE)
{
// Each time we loop, we move to a new column and need a new strip:
xy += cBpp;
x++;
plStrip++;
cStrips--;
if (cStrips == 0)
goto AllDone;
cStrip = *plStrip;
OutputADash:
cThis = min(cStrip, cStyle);
cStyle -= cThis;
cStrip -= cThis;
if (dy <= 0)
{
MM_DRAW_VERT_STRIP_FLIPPED(xy, cThis, lDelta, cBpp);
y -= cThis; // y-
xy -= (cThis * lDelta); // y-
}
else
{
MM_DRAW_VERT_STRIP(xy, cThis, lDelta, cBpp);
y += cThis; // y+
xy += (cThis * lDelta); // y+
}
if (cStyle == 0)
goto PrepareToSkipAGap;
}
AllDone:
// Update our state variables so that the next line can continue
// where we left off:
pls->spRemaining = cStyle;
pls->ulStyleMask = bIsGap;
pstrip->ptlStart.x = x;
pstrip->ptlStart.y = y;
}
/******************************Public*Routine******************************\
* VOID vInvalidStrip
*
* Put this in the function table for entries that shouldn't get hit.
*
\**************************************************************************/
VOID vInvalidStrip(
PDEV* ppdev, // unused
STRIP* pStrip, // unused
LINESTATE* pLineState) // unused
{
RIP("vInvalidStrip called");
return;
}
// chu01
/******************************Public*Routine******************************\
*
* B i t B L T E n h a n c e m e n t F o r C L - G D 5 4 8 0
*
\**************************************************************************/
VOID vMmSolidHorizontal80(
PDEV* ppdev,
STRIP* pStrip,
LINESTATE* pLineState)
{
BYTE* pjBase = ppdev->pjBase ;
LONG cBpp = ppdev->cBpp ;
LONG lDelta = ppdev->lDelta ;
LONG cStrips = pStrip->cStrips ;
PLONG pStrips = pStrip->alStrips ; // cx for each stroke
LONG x = pStrip->ptlStart.x ; // X-position
LONG y = pStrip->ptlStart.y ; // Y-position
LONG yOrg = y ;
LONG yInc = 1 ;
LONG x0, y0, cx ;
ULONG ulDstOffset = 0 ;
ULONG_PTR* ulCLStart ;
ULONG ulWidthHeight ;
LONG i = 0 ;
BYTE MM1B ;
DISPDBG((2, "vMmSolidHorizontal80")) ;
if (!(pStrip->flFlips & FL_FLIP_V))
{
//
// Horizontal strips -> 1.
// -> 2.
//
if (cStrips != 1)
{
MM1B = ENABLE_COMMAND_LIST | ENABLE_XY_POSITION | SRC_CPU_DATA ;
CP_MM_BLT_EXT_MODE(ppdev, pjBase, MM1B) ;
Loop_H1:
ulCLStart = ppdev->pCommandList ;
ulDstOffset = (ULONG)(((ULONG_PTR)ulCLStart
- (ULONG_PTR)ppdev->pjScreen) << 14) ;
CP_MM_CL_SWITCH(ppdev) ;
// First strip
x0 = x ;
y0 = y ;
cx = *pStrips ;
i++ ;
// Next strip
y++ ;
x += cx ;
pStrips++ ;
while (TRUE)
{
// GR20, GR21, GR22, GR23
ulWidthHeight = PACKXY_FAST((*pStrips - 1), 0) ;
ulWidthHeight |= COMMAND_NOSRC_NOTHING ;
// GR40, GR41, GR42, GR43
*(ulCLStart + 1) = PACKXY_FAST(x, y) ;
// GR2C, GR2D, GR2E
*(ulCLStart + 2) = 0 ;
i++ ;
if ((i == cStrips) || ((i % count) == 0))
{
// Last Command
ulWidthHeight |= COMMAND_LAST_PACKET ;
*ulCLStart = ulWidthHeight ;
break ;
}
*ulCLStart = ulWidthHeight ;
// Next strip
y++ ;
x += *pStrips ;
pStrips++ ;
ulCLStart += 4 ;
}
CP_MM_WAIT_FOR_BLT_COMPLETE(ppdev, pjBase) ;
CP_MM_XCNT(ppdev, pjBase, (cx - 1)) ;
CP_MM_YCNT(ppdev, pjBase, 0) ;
CP_MM_DST_ADDR(ppdev, pjBase, ulDstOffset) ;
CP_MM_DST_Y(ppdev, pjBase, y0) ;
CP_MM_DST_X(ppdev, pjBase, x0) ;
if (i == cStrips)
x += *pStrips ;
else if ((i % count) == 0)
{
//
// Resume a new command list
//
y++ ;
cx = *pStrips ;
x += cx ;
pStrips++ ;
if (i != (cStrips - 1))
{
goto Loop_H1 ;
}
else
{
MM_DRAW_HORZ_STRIP80(x, y, *pStrips) ;
x += *pStrips ;
pStrips++;
}
}
}
else
{
MM_DRAW_HORZ_STRIP80(x, y, *pStrips) ;
x += *pStrips ;
pStrips++;
}
yOrg += cStrips;
}
else
{
//
// -> 2.
// Horizontal strips -> 1.
//
if (cStrips != 1)
{
MM1B = ENABLE_COMMAND_LIST | ENABLE_XY_POSITION | SRC_CPU_DATA ;
CP_MM_BLT_EXT_MODE(ppdev, pjBase, MM1B) ;
Loop_H2:
ulCLStart = ppdev->pCommandList;
ulDstOffset = (ULONG)(((ULONG_PTR)ulCLStart
- (ULONG_PTR)ppdev->pjScreen) << 14) ;
CP_MM_CL_SWITCH(ppdev) ;
// First strip
x0 = x ;
y0 = y ;
cx = *pStrips ;
i++ ;
// Next strip
y-- ;
x += cx ;
pStrips++ ;
while (TRUE)
{
// GR20, GR21, GR22, GR23
ulWidthHeight = PACKXY_FAST((*pStrips - 1), 0) ;
ulWidthHeight |= COMMAND_NOSRC_NOTHING ;
// GR40, GR41, GR42, GR43
*(ulCLStart + 1) = PACKXY_FAST(x, y) ;
// GR2C, GR2D, GR2E
*(ulCLStart + 2) = 0 ;
i++ ;
if ((i == cStrips) || ((i % count) == 0))
{
// Last Command
ulWidthHeight |= COMMAND_LAST_PACKET ;
*ulCLStart = ulWidthHeight ;
break ;
}
*ulCLStart = ulWidthHeight ;
// Next strip
y-- ;
x += *pStrips ;
pStrips++ ;
ulCLStart += 4 ;
}
CP_MM_WAIT_FOR_BLT_COMPLETE(ppdev, pjBase) ;
CP_MM_XCNT(ppdev, pjBase, (cx - 1)) ;
CP_MM_YCNT(ppdev, pjBase, 0) ;
CP_MM_DST_ADDR(ppdev, pjBase, ulDstOffset) ;
CP_MM_DST_Y(ppdev, pjBase, y0) ;
CP_MM_DST_X(ppdev, pjBase, x0) ;
if (i == cStrips)
x += *pStrips ;
else if ((i % count) == 0)
{
//
// Resume a new command list
//
y-- ;
cx = *pStrips ;
x += cx ;
pStrips++ ;
if (i != (cStrips - 1))
{
goto Loop_H2 ;
}
else
{
MM_DRAW_HORZ_STRIP80(x, y, *pStrips) ;
x += *pStrips ;
pStrips++;
}
}
}
else
{
MM_DRAW_HORZ_STRIP80(x, y, *pStrips) ;
x += *pStrips ;
pStrips++;
}
yOrg -= cStrips;
}
pStrip->ptlStart.x = x ;
pStrip->ptlStart.y = yOrg ;
}
/******************************Public*Routine******************************\
* VOID vMmSolidVertical80
*
* Draws left-to-right y-major near-vertical lines using solid fills.
*
\**************************************************************************/
VOID vMmSolidVertical80(
PDEV* ppdev,
STRIP* pStrip,
LINESTATE* pLineState)
{
BYTE* pjBase = ppdev->pjBase ;
LONG cBpp = ppdev->cBpp ;
LONG lDelta = ppdev->lDelta ;
LONG cStrips = pStrip->cStrips ;
PLONG pStrips = pStrip->alStrips ;
LONG x = pStrip->ptlStart.x ;
LONG y = pStrip->ptlStart.y ;
LONG xOrg = x ;
LONG x0, y0, cy ;
ULONG ulDstOffset = 0 ;
ULONG_PTR* ulCLStart ;
ULONG ulWidthHeight ;
LONG i = 0 ;
BYTE MM1B ;
DISPDBG((2, "vMmSolidVertical80")) ;
if (!(pStrip->flFlips & FL_FLIP_V))
{
//
// | 1.
// Vertical strips v
// | 2.
// v
//
if (cStrips != 1)
{
MM1B = ENABLE_COMMAND_LIST | ENABLE_XY_POSITION | SRC_CPU_DATA ;
CP_MM_BLT_EXT_MODE(ppdev, pjBase, MM1B) ;
Loop_V1:
ulCLStart = ppdev->pCommandList ;
ulDstOffset = (ULONG)(((ULONG_PTR)ulCLStart
- (ULONG_PTR)ppdev->pjScreen) << 14) ;
CP_MM_CL_SWITCH(ppdev) ;
// First strip
x0 = x ;
y0 = y ;
cy = *pStrips ;
i++ ;
// Next strip
x++ ;
y += cy ;
pStrips++ ;
while (TRUE)
{
// GR20, GR21, GR22, GR23
ulWidthHeight = PACKXY_FAST(0, (*pStrips - 1)) ;
ulWidthHeight |= COMMAND_NOSRC_NOTHING ;
// GR40, GR41, GR42, GR43
*(ulCLStart + 1) = PACKXY_FAST(x, y) ;
// GR2C, GR2D, GR2E
*(ulCLStart + 2) = 0 ;
i++ ;
if ((i == cStrips) || ((i % count) == 0))
{
// Last Command
ulWidthHeight |= COMMAND_LAST_PACKET ;
*ulCLStart = ulWidthHeight ;
break ;
}
*ulCLStart = ulWidthHeight ;
// Next strip
x++ ;
y += *pStrips ;
pStrips++ ;
ulCLStart += 4 ;
}
CP_MM_WAIT_FOR_BLT_COMPLETE(ppdev, pjBase) ;
CP_MM_XCNT(ppdev, pjBase, 0) ;
CP_MM_YCNT(ppdev, pjBase, (cy - 1)) ;
CP_MM_DST_ADDR(ppdev, pjBase, ulDstOffset) ;
CP_MM_DST_Y(ppdev, pjBase, y0) ;
CP_MM_DST_X(ppdev, pjBase, x0) ;
if (i == cStrips)
y += *pStrips ;
else if ((i % count) == 0)
{
//
// Resume a new command list
//
x++ ;
cy = *pStrips ;
y += cy ;
pStrips++ ;
if (i != (cStrips - 1))
{
goto Loop_V1 ;
}
else
{
MM_DRAW_VERT_STRIP80(x, y, *pStrips) ;
y += *pStrips ;
pStrips++;
}
}
}
else
{
MM_DRAW_VERT_STRIP80(x, y, *pStrips) ;
y += *pStrips ;
pStrips++;
}
}
else
{
//
// ^
// Vertical strips | 2.
// ^
// | 1.
//
if (cStrips != 1)
{
MM1B = ENABLE_COMMAND_LIST | ENABLE_XY_POSITION | SRC_CPU_DATA ;
CP_MM_BLT_EXT_MODE(ppdev, pjBase, MM1B) ;
Loop_V2:
ulCLStart = ppdev->pCommandList ;
ulDstOffset = (ULONG)(((ULONG_PTR)ulCLStart
- (ULONG_PTR)ppdev->pjScreen) << 14) ;
CP_MM_CL_SWITCH(ppdev) ;
// First strip
x0 = x ;
cy = *pStrips ;
y -= (cy - 1) ;
y0 = y ;
i++ ;
pStrips++ ;
// Next strip
x++ ;
y -= *pStrips ;
while (TRUE)
{
// GR20, GR21, GR22, GR23
ulWidthHeight = PACKXY_FAST(0, (*pStrips - 1)) ;
ulWidthHeight |= COMMAND_NOSRC_NOTHING ;
// GR40, GR41, GR42, GR43
*(ulCLStart + 1) = PACKXY_FAST(x, y) ;
// GR2C, GR2D, GR2E
*(ulCLStart + 2) = 0 ;
i++ ;
if ((i == cStrips) || ((i % count) == 0))
{
// Last Command
ulWidthHeight |= COMMAND_LAST_PACKET ;
*ulCLStart = ulWidthHeight ;
break ;
}
*ulCLStart = ulWidthHeight ;
// Next strip
x++ ;
pStrips++ ;
y -= *pStrips ;
ulCLStart += 4 ;
}
CP_MM_WAIT_FOR_BLT_COMPLETE(ppdev, pjBase) ;
CP_MM_XCNT(ppdev, pjBase, 0) ;
CP_MM_YCNT(ppdev, pjBase, (cy - 1)) ;
CP_MM_DST_ADDR(ppdev, pjBase, ulDstOffset) ;
CP_MM_DST_Y(ppdev, pjBase, y0) ;
CP_MM_DST_X(ppdev, pjBase, x0);
if (i == cStrips)
y -= *pStrips ;
else if ((i % count) == 0)
{
//
// Resume a new command list
//
x++ ;
y-- ;
pStrips++ ;
if (i != (cStrips - 1))
{
goto Loop_V2 ;
}
else
{
MM_DRAW_VERT_STRIP80(x, y, *pStrips) ;
y -= *pStrips ;
pStrips++;
}
}
}
else
{
MM_DRAW_VERT_STRIP_FLIPPED80(x, y, *pStrips) ;
y -= *pStrips ;
pStrips++;
}
}
xOrg += cStrips ;
pStrip->ptlStart.x = xOrg ;
pStrip->ptlStart.y = y ;
}