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Microsoft Windows NT Build 511 (DDK SDK) 11-01-1993
/******************************Module*Header*******************************\
* Module Name: bitblt.c
*
* XGA bitblit accelerations
*
* Copyright (c) 1992 Microsoft Corporation
*
\**************************************************************************/
#include "driver.h"
BOOL bSpecialBlits(
SURFOBJ *psoTrg,
SURFOBJ *psoSrc,
SURFOBJ *psoMask,
CLIPOBJ *pco,
XLATEOBJ *pxlo,
RECTL *prclTrg,
POINTL *pptlSrc,
POINTL *pptlMask,
BRUSHOBJ *pbo,
POINTL *pptlBrush,
ROP4 rop4
);
BOOL bScrnToScrnCpy(
SURFOBJ *psoTrg,
SURFOBJ *psoSrc,
SURFOBJ *psoMask,
CLIPOBJ *pco,
XLATEOBJ *pxlo,
RECTL *prclTrg,
POINTL *pptlSrc,
POINTL *pptlMask,
BRUSHOBJ *pbo,
POINTL *pptlBrush,
ROP4 rop4
);
BOOL bSolidPattern(
SURFOBJ *psoTrg,
SURFOBJ *psoSrc,
SURFOBJ *psoMask,
CLIPOBJ *pco,
XLATEOBJ *pxlo,
RECTL *prclTrg,
POINTL *pptlSrc,
POINTL *pptlMask,
BRUSHOBJ *pbo,
POINTL *pptlBrush,
ROP4 rop4
);
/******************************Public*Data*********************************\
* ROP translation table
*
* Translates the usual ternary rop into A-vector notation. Each bit in
* this new notation corresponds to a term in a polynomial translation of
* the rop.
*
* Rop(D,S,P) = a + a D + a S + a P + a DS + a DP + a SP + a DSP
* 0 d s p ds dp sp dsp
*
\**************************************************************************/
BYTE gajRop[] =
{
0x00, 0xff, 0xb2, 0x4d, 0xd4, 0x2b, 0x66, 0x99,
0x90, 0x6f, 0x22, 0xdd, 0x44, 0xbb, 0xf6, 0x09,
0xe8, 0x17, 0x5a, 0xa5, 0x3c, 0xc3, 0x8e, 0x71,
0x78, 0x87, 0xca, 0x35, 0xac, 0x53, 0x1e, 0xe1,
0xa0, 0x5f, 0x12, 0xed, 0x74, 0x8b, 0xc6, 0x39,
0x30, 0xcf, 0x82, 0x7d, 0xe4, 0x1b, 0x56, 0xa9,
0x48, 0xb7, 0xfa, 0x05, 0x9c, 0x63, 0x2e, 0xd1,
0xd8, 0x27, 0x6a, 0x95, 0x0c, 0xf3, 0xbe, 0x41,
0xc0, 0x3f, 0x72, 0x8d, 0x14, 0xeb, 0xa6, 0x59,
0x50, 0xaf, 0xe2, 0x1d, 0x84, 0x7b, 0x36, 0xc9,
0x28, 0xd7, 0x9a, 0x65, 0xfc, 0x03, 0x4e, 0xb1,
0xb8, 0x47, 0x0a, 0xf5, 0x6c, 0x93, 0xde, 0x21,
0x60, 0x9f, 0xd2, 0x2d, 0xb4, 0x4b, 0x06, 0xf9,
0xf0, 0x0f, 0x42, 0xbd, 0x24, 0xdb, 0x96, 0x69,
0x88, 0x77, 0x3a, 0xc5, 0x5c, 0xa3, 0xee, 0x11,
0x18, 0xe7, 0xaa, 0x55, 0xcc, 0x33, 0x7e, 0x81,
0x80, 0x7f, 0x32, 0xcd, 0x54, 0xab, 0xe6, 0x19,
0x10, 0xef, 0xa2, 0x5d, 0xc4, 0x3b, 0x76, 0x89,
0x68, 0x97, 0xda, 0x25, 0xbc, 0x43, 0x0e, 0xf1,
0xf8, 0x07, 0x4a, 0xb5, 0x2c, 0xd3, 0x9e, 0x61,
0x20, 0xdf, 0x92, 0x6d, 0xf4, 0x0b, 0x46, 0xb9,
0xb0, 0x4f, 0x02, 0xfd, 0x64, 0x9b, 0xd6, 0x29,
0xc8, 0x37, 0x7a, 0x85, 0x1c, 0xe3, 0xae, 0x51,
0x58, 0xa7, 0xea, 0x15, 0x8c, 0x73, 0x3e, 0xc1,
0x40, 0xbf, 0xf2, 0x0d, 0x94, 0x6b, 0x26, 0xd9,
0xd0, 0x2f, 0x62, 0x9d, 0x04, 0xfb, 0xb6, 0x49,
0xa8, 0x57, 0x1a, 0xe5, 0x7c, 0x83, 0xce, 0x31,
0x38, 0xc7, 0x8a, 0x75, 0xec, 0x13, 0x5e, 0xa1,
0xe0, 0x1f, 0x52, 0xad, 0x34, 0xcb, 0x86, 0x79,
0x70, 0x8f, 0xc2, 0x3d, 0xa4, 0x5b, 0x16, 0xe9,
0x08, 0xf7, 0xba, 0x45, 0xdc, 0x23, 0x6e, 0x91,
0x98, 0x67, 0x2a, 0xd5, 0x4c, 0xb3, 0xfe, 0x01
};
/*****************************************************************************
* XGA DrvBitBlt
****************************************************************************/
BOOL DrvBitBlt(
SURFOBJ *psoTrg,
SURFOBJ *psoSrc,
SURFOBJ *psoMask,
CLIPOBJ *pco,
XLATEOBJ *pxlo,
RECTL *prclTrg,
POINTL *pptlSrc,
POINTL *pptlMask,
BRUSHOBJ *pbo,
POINTL *pptlBrush,
ROP4 rop4)
{
BOOL b;
b = bSpecialBlits(psoTrg, psoSrc, psoMask,
pco, pxlo,
prclTrg, pptlSrc, pptlMask,
pbo, pptlBrush,
rop4);
if (b == TRUE)
{
return (TRUE);
}
if ((psoTrg) && (psoTrg->iType == STYPE_DEVICE))
psoTrg = ((PPDEV)(psoTrg->dhpdev))->pSurfObj;
if ((psoSrc) && (psoSrc->iType == STYPE_DEVICE))
psoSrc = ((PPDEV)(psoSrc->dhpdev))->pSurfObj;
EngBitBlt(psoTrg,
psoSrc,
psoMask,
pco,
pxlo,
prclTrg,
pptlSrc,
pptlMask,
pbo,
pptlBrush,
rop4);
}
/*****************************************************************************
* XGA Special case Blit handler
*
* Returns TRUE if the blit was handled.
****************************************************************************/
BOOL bSpecialBlits(
SURFOBJ *psoTrg,
SURFOBJ *psoSrc,
SURFOBJ *psoMask,
CLIPOBJ *pco,
XLATEOBJ *pxlo,
RECTL *prclTrg,
POINTL *pptlSrc,
POINTL *pptlMask,
BRUSHOBJ *pbo,
POINTL *pptlBrush,
ROP4 rop4)
{
BOOL b;
HSURF hsurfSrc, hsurfTrg;
b = FALSE;
DISPDBG((3, "XGA.DLL!bSpecialBlits - rop4: %8.8X\n", rop4));
DISPDBG((3, "XGA.DLL!bSpecialBlits - pbo : %8.8X\n", pbo));
// Wait for the coprocessor.
vWaitForCoProcessor((PPDEV)psoTrg->dhpdev, 100);
// NOTE: If the ForeRop and BackRop are the same implicitly
// there is no mask.
// First test for a screen to screen copy.
if (rop4 == 0x0000CCCC)
{
if (psoTrg != NULL)
hsurfTrg = psoTrg->hsurf;
if (psoSrc != NULL)
hsurfSrc = psoSrc->hsurf;
if (hsurfTrg == hsurfSrc)
{
if (((PPDEV)psoTrg->dhpdev)->ulfBlitAccelerations_debug & SCRN_TO_SCRN_CPY)
{
b = bScrnToScrnCpy(psoTrg, psoSrc, psoMask,
pco, pxlo,
prclTrg, pptlSrc, pptlMask,
pbo, pptlBrush,
rop4);
}
else
{
b = FALSE;
}
}
}
// Check for a Solid Brush.
if (rop4 == 0x0000F0F0)
{
if (pbo->iSolidColor != -1)
{
if (((PPDEV)psoTrg->dhpdev)->ulfBlitAccelerations_debug & SOLID_PATTERN)
{
b = bSolidPattern(psoTrg, psoSrc, psoMask,
pco, pxlo,
prclTrg, pptlSrc, pptlMask,
pbo, pptlBrush,
rop4);
}
else
{
b = FALSE;
}
}
}
return (b);
}
/*****************************************************************************
* XGA Screen to Screen Copy
*
* Returns TRUE if the blit was handled.
****************************************************************************/
BOOL bScrnToScrnCpy(
SURFOBJ *psoTrg,
SURFOBJ *psoSrc,
SURFOBJ *psoMask,
CLIPOBJ *pco,
XLATEOBJ *pxlo,
RECTL *prclTrg,
POINTL *pptlSrc,
POINTL *pptlMask,
BRUSHOBJ *pbo,
POINTL *pptlBrush,
ROP4 rop4)
{
BOOL b;
INT width,
height,
xTrg,
yTrg,
xSrc,
ySrc;
ULONG ulDirCode,
XGAPixelOp,
ulXgaMask;
PXGACPREGS pXgaCpRegs = ((PPDEV)psoTrg->dhpdev)->pXgaCpRegs;
// Important Note: When we get time we should test the Coprocessor
// for being busy. If its not then we should execute the code here.
// If it is busy we should queue the request. This implies an
// interrupt driven XGA.
b = bSetXgaClipping((PPDEV)psoTrg->dhpdev, pco, &ulXgaMask);
if (b == FALSE)
return (b);
// Setup the BitBlt parameters.
width = (prclTrg->right - prclTrg->left) - 1;
height = (prclTrg->bottom - prclTrg->top) - 1;
// We need to determine the direction of the blit.
ulDirCode = 0;
xTrg = prclTrg->left;
yTrg = prclTrg->top;
xSrc = pptlSrc->x;
ySrc = pptlSrc->y;
// The horizontal copy direction.
if (prclTrg->left > pptlSrc->x)
{
// R to L
xTrg = prclTrg->right - 1;
xSrc = pptlSrc->x + width;
ulDirCode |= OCT_DX;
}
// The vertical copy direction.
if (prclTrg->top > pptlSrc->y)
{
// B to T
yTrg = prclTrg->bottom - 1;
ySrc = pptlSrc->y + height;
ulDirCode |= OCT_DY;
}
pXgaCpRegs->XGAOpDim1 = width;
pXgaCpRegs->XGAOpDim2 = height;
pXgaCpRegs->XGASourceMapX = xSrc;
pXgaCpRegs->XGASourceMapY = ySrc;
pXgaCpRegs->XGADestMapX = xTrg;
pXgaCpRegs->XGADestMapY = yTrg;
pXgaCpRegs->XGAForeGrMix = XGA_S;
pXgaCpRegs->XGABackGrMix = XGA_S;
// Now build the Pel Operation Register Op Code;
XGAPixelOp = BS_SRC_PEL_MAP | FS_SRC_PEL_MAP |
STEP_PX_BLT |
SRC_PEL_MAP_A | DST_PEL_MAP_A |
PATT_FOREGROUND;
XGAPixelOp |= ulDirCode;
XGAPixelOp |= ulXgaMask;
pXgaCpRegs->XGAPixelOp = XGAPixelOp;
return (TRUE);
}
/*****************************************************************************
* XGA Solid Pattern
*
* Returns TRUE if the blit was handled.
****************************************************************************/
BOOL bSolidPattern(
SURFOBJ *psoTrg,
SURFOBJ *psoSrc,
SURFOBJ *psoMask,
CLIPOBJ *pco,
XLATEOBJ *pxlo,
RECTL *prclTrg,
POINTL *pptlSrc,
POINTL *pptlMask,
BRUSHOBJ *pbo,
POINTL *pptlBrush,
ROP4 rop4)
{
BOOL b;
INT width,
height;
ULONG XGAPixelOp,
ulXgaMask;
PXGACPREGS pXgaCpRegs = ((PPDEV)psoTrg->dhpdev)->pXgaCpRegs;
DISPDBG((2, "XGA.DLL!bSolidPattern - Entry\n"));
b = bSetXgaClipping((PPDEV)psoTrg->dhpdev,pco, &ulXgaMask);
if (b == FALSE)
return (b);
// Setup the BitBlt parameters.
width = (prclTrg->right - prclTrg->left) - 1;
height = (prclTrg->bottom - prclTrg->top) - 1;
pXgaCpRegs->XGAOpDim1 = width;
pXgaCpRegs->XGAOpDim2 = height;
pXgaCpRegs->XGADestMapX = (USHORT) prclTrg->left;
pXgaCpRegs->XGADestMapY = (USHORT) prclTrg->top;
pXgaCpRegs->XGAForeGrMix = XGA_S;
pXgaCpRegs->XGABackGrMix = XGA_S;
pXgaCpRegs->XGAForeGrColorReg = pbo->iSolidColor;
pXgaCpRegs->XGABackGrColorReg = pbo->iSolidColor;
// Now build the Pel Operation Register Op Code;
XGAPixelOp = BS_BACK_COLOR | FS_FORE_COLOR |
STEP_PX_BLT |
SRC_PEL_MAP_A | DST_PEL_MAP_A |
PATT_FOREGROUND;
XGAPixelOp |= ulXgaMask;
pXgaCpRegs->XGAPixelOp = XGAPixelOp;
return (TRUE);
}
/*****************************************************************************
* XGA DrvCopyBits
****************************************************************************/
BOOL DrvCopyBits(
SURFOBJ *psoDest,
SURFOBJ *psoSrc,
CLIPOBJ *pco,
XLATEOBJ *pxlo,
RECTL *prclDest,
POINTL *pptlSrc)
{
BOOL b;
CLIPOBJ coLocal;
SURFOBJ *pso;
DISPDBG((2, "XGA.DLL: DrvCopyBits - Entry\n"));
// Need to determine which surface is the display.
// So we can pickup the address of the XGA coprocessor regs.
if ((psoDest) && (psoDest->iType == STYPE_DEVICE))
pso = psoDest;
else if ((psoSrc) && (psoSrc->iType == STYPE_DEVICE))
pso = psoSrc;
else
{
RIP ("XGA.DLL!DrvCopyBits - neither surface is a device surface\n");
return (TRUE);
}
// Wait for the coprocessor.
vWaitForCoProcessor((PPDEV)pso->dhpdev, 100);
// Protect this routine from a potentially NULL clip object
if (pco == NULL)
{
coLocal.iDComplexity = DC_RECT;
coLocal.rclBounds.left = 0;
coLocal.rclBounds.top = 0;
coLocal.rclBounds.right = ((PPDEV)pso->dhpdev)->cxScreen;
coLocal.rclBounds.bottom = ((PPDEV)pso->dhpdev)->cyScreen;
pco = &coLocal;
}
// Check for a Screen to Screen or a Host to Screen blit.
b = FALSE;
if ((psoDest->iType == STYPE_DEVICE) &&
(psoSrc->iType == STYPE_DEVICE) &&
(((PPDEV)psoDest->dhpdev)->ulfBlitAccelerations_debug & SCRN_TO_SCRN_CPY))
{
b = bScrnToScrnCpy(psoDest,
psoSrc,
NULL,
pco,
pxlo,
prclDest,
pptlSrc,
NULL,
NULL,
NULL,
0xcccc);
}
if (b == FALSE)
{
if ((psoDest) && (psoDest->iType == STYPE_DEVICE))
psoDest = ((PPDEV)(psoDest->dhpdev))->pSurfObj;
if ((psoSrc) && (psoSrc->iType == STYPE_DEVICE))
psoSrc = ((PPDEV)(psoSrc->dhpdev))->pSurfObj;
EngCopyBits(psoDest,
psoSrc,
pco,
pxlo,
prclDest,
pptlSrc);
}
return (TRUE);
}
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