/*++ Copyright (c) 1996-1999 Microsoft Corporation Module Name trimesh.cxx Abstract: Implement triangle mesh API Author: Mark Enstrom (marke) 23-Jun-1996 Enviornment: User Mode Revision History: --*/ #include "precomp.hxx" #include "dciman.h" #pragma hdrstop #if !(_WIN32_WINNT >= 0x500) VOID ImgFillMemoryULONG( PBYTE pDst, ULONG cxBytes, ULONG ulPat ) { PULONG pulDst = (PULONG)pDst; PULONG pulEnd = (PULONG)(pDst + ((cxBytes / 4)*4)); while (pulDst != pulEnd) { *pulDst = ulPat; pulDst++; } } /**************************************************************************\ * * Dither information for 8bpp. This is customized for dithering to * the halftone palette [6,6,6] color cube. * * History: * * 2/24/1997 Mark Enstrom [marke] * \**************************************************************************/ BYTE gDitherMatrix16x16Halftone[256] = { 3, 28, 9, 35, 4, 30, 11, 36, 3, 29, 10, 35, 5, 30, 11, 37, 41, 16, 48, 22, 43, 17, 49, 24, 42, 16, 48, 22, 43, 18, 50, 24, 6, 32, 0, 25, 8, 33, 1, 27, 6, 32, 0, 26, 8, 34, 2, 27, 44, 19, 38, 12, 46, 20, 40, 14, 45, 19, 38, 13, 46, 21, 40, 14, 5, 31, 12, 37, 4, 29, 10, 36, 6, 31, 12, 38, 4, 30, 10, 36, 44, 18, 50, 24, 42, 16, 48, 23, 44, 18, 50, 25, 42, 17, 49, 23, 8, 34, 2, 28, 7, 32, 0, 26, 9, 34, 2, 28, 7, 33, 1, 26, 47, 21, 40, 15, 45, 20, 39, 13, 47, 22, 41, 15, 46, 20, 39, 14, 3, 29, 9, 35, 5, 30, 11, 37, 3, 28, 9, 35, 4, 30, 11, 36, 41, 16, 48, 22, 43, 17, 49, 24, 41, 15, 47, 22, 43, 17, 49, 23, 6, 32, 0, 25, 8, 33, 1, 27, 6, 31, 0, 25, 7, 33, 1, 27, 45, 19, 38, 13, 46, 21, 40, 14, 44, 19, 38, 12, 46, 20, 39, 14, 5, 31, 12, 37, 4, 29, 10, 36, 5, 31, 11, 37, 3, 29, 10, 35, 44, 18, 50, 25, 42, 17, 49, 23, 43, 18, 50, 24, 42, 16, 48, 23, 9, 34, 2, 28, 7, 33, 1, 26, 8, 34, 2, 27, 7, 32, 0, 26, 47, 21, 41, 15, 45, 20, 39, 13, 47, 21, 40, 15, 45, 19, 39, 13 }; BYTE gDitherMatrix16x16Default[256] = { 8, 72, 24, 88, 12, 76, 28, 92, 9, 73, 25, 89, 13, 77, 29, 93, 104, 40,120, 56,108, 44,124, 60,105, 41,121, 57,109, 45,125, 61, 16, 80, 0, 64, 20, 84, 4, 68, 17, 81, 1, 65, 21, 85, 5, 69, 112, 48, 96, 32,116, 52,100, 36,113, 49, 97, 33,117, 53,101, 37, 14, 78, 30, 94, 10, 74, 26, 90, 15, 79, 31, 95, 11, 75, 27, 91, 110, 46,126, 62,106, 42,122, 58,111, 47,126, 63,107, 43,123, 59, 22, 86, 6, 70, 18, 82, 2, 66, 23, 87, 7, 71, 19, 83, 3, 67, 118, 54,102, 38,114, 50, 98, 34,119, 55,103, 39,115, 51, 99, 35, 9, 73, 25, 89, 13, 77, 29, 93, 8, 72, 24, 88, 12, 76, 28, 92, 105, 41,121, 57,109, 45,125, 61,104, 40,120, 56,108, 44,124, 60, 17, 81, 1, 65, 21, 85, 5, 69, 16, 80, 0, 64, 20, 84, 4, 68, 113, 49, 97, 33,117, 53,101, 37,112, 48, 96, 32,116, 52,100, 36, 15, 79, 31, 95, 11, 75, 27, 91, 14, 78, 30, 94, 10, 74, 26, 90, 111, 47,126, 63,107, 43,123, 59,110, 46,126, 62,106, 42,122, 58, 23, 87, 7, 71, 19, 83, 3, 67, 22, 86, 6, 70, 18, 82, 2, 66, 119, 55,103, 39,115, 51, 99, 35,118, 54,102, 38,114, 50, 98, 34 }; /**************************************************************************\ * HalftoneSaturationTable * * This table maps a 8 bit pixel plus a dither error term in the range * of 0 to 51 onto a 8 bit pixel. Overflow of up to 31 is considered * saturated (255+51 = 255). The level 51 (0x33) is used to map pixels * and error values to the halftone palette * * DefaultSaturationTable * * map to default colors (0,128,255) (does not use "magic" colors) * * IdentitySaturationTable * * prevent overflow * * History: * * 3/4/1997 Mark Enstrom [marke] * \**************************************************************************/ BYTE HalftoneSaturationTable[256 + 128] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51,102,102,102,102,102,102,102,102,102,102, 102,102,102,102,102,102,102,102,102,102,102,102,102,102,102,102, 102,102,102,102,102,102,102,102,102,102,102,102,102,102,102,102, 102,102,102,102,102,102,102,102,102,153,153,153,153,153,153,153, 153,153,153,153,153,153,153,153,153,153,153,153,153,153,153,153, 153,153,153,153,153,153,153,153,153,153,153,153,153,153,153,153, 153,153,153,153,153,153,153,153,153,153,153,153,204,204,204,204, 204,204,204,204,204,204,204,204,204,204,204,204,204,204,204,204, 204,204,204,204,204,204,204,204,204,204,204,204,204,204,204,204, 204,204,204,204,204,204,204,204,204,204,204,204,204,204,204,255, 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255 }; BYTE DefaultSaturationTable[256 + 128] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 128,128,128,128,128,128,128,128,128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128,128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128,128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128,128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128,128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128,128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128,128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128,128,128,128,128,128,128,128,255, 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255 }; BYTE Saturation16_5[64] = { 0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0a,0x0b,0x0c,0x0d,0x0e,0x0f, 0x10,0x11,0x12,0x13,0x14,0x15,0x16,0x17,0x18,0x19,0x1a,0x1b,0x1c,0x1d,0x1e,0x1f, 0x1f,0x1f,0x1f,0x1f,0x1f,0x1f,0x1f,0x1f,0x1f,0x1f,0x1f,0x1f,0x1f,0x1f,0x1f,0x1f, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }; BYTE Saturation16_6[128] = { 0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0a,0x0b,0x0c,0x0d,0x0e,0x0f, 0x10,0x11,0x12,0x13,0x14,0x15,0x16,0x17,0x18,0x19,0x1a,0x1b,0x1c,0x1d,0x1e,0x1f, 0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27,0x28,0x29,0x2a,0x2b,0x2c,0x2d,0x2e,0x2f, 0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,0x3a,0x3b,0x3c,0x3d,0x3e,0x3f, 0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f, 0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }; /**************************************************************************\ * gulDither32 - 4-4 dither matrix * * * History: * * 1/31/1997 Mark Enstrom [marke] * \**************************************************************************/ ULONG gulDither32[] = { 0x00000000, 0x00008000, 0x00002000, 0x0000a000, 0x0000c000, 0x00004000, 0x0000e000, 0x00006000, 0x00003000, 0x0000b000, 0x00001000, 0x00009000, 0x0000f000, 0x00007000, 0x0000d000, 0x00005000 }; //******************************************************************************* // // // // // Triangel drawing routines // // // // // //******************************************************************************* /******************************Public*Routine******************************\ * vFillTriDIBUnreadable * * If a surface can't be read, draw triangle to a scan line, then call * BitBlt on each scan line. BitBlt is called to take advantage of * cached 32bpp to 8bpp lookup table (memphis) * * Arguments: * * pDibInfo - surface information * ptData - triangle information * * Return Value: * * none * * History: * * 11/21/1996 Mark Enstrom [marke] * \**************************************************************************/ VOID vFillTriDIBUnreadable( PDIBINFO pDibInfo, PTRIANGLEDATA ptData ) { LONG lDelta = pDibInfo->stride; LONG yScan = ptData->y0; LONG yScanBottom; LONG cxClip = ptData->rcl.right - ptData->rcl.left; PTRIEDGE pEdge = &ptData->TriEdge[0]; LONGLONG lldRdX = ptData->lldRdX; LONGLONG lldGdX = ptData->lldGdX; LONGLONG lldBdX = ptData->lldBdX; COLOR_INTERP clrRed,clrGreen,clrBlue,clrAlpha; PBYTE pDst = NULL; HDC hdc32; PBYTE pDitherMatrix = gDitherMatrix16x16Halftone; PBYTE pSaturationTable = HalftoneSaturationTable; LONG yDitherOrg = ptData->ptDitherOrg.y; LONG xDitherOrg = ptData->ptDitherOrg.x; BOOL b1bpp = (pDibInfo->pbmi->bmiHeader.biBitCount == 1); // // WINBUG #365339 4-10-2001 jasonha Investigate using default dither table // Old Comment: // - should use default dither table for 8bpp w/o // halftone palette // if ( (pDibInfo->pbmi->bmiHeader.biBitCount == 4) || (b1bpp) ) { pDitherMatrix = gDitherMatrix16x16Default; pSaturationTable = DefaultSaturationTable; } // // allocate temp storage // hdc32 = hdcAllocateScanLineDC(cxClip,(PULONG *)&pDst); if (hdc32 == NULL) { return; } yScanBottom = MIN(ptData->rcl.bottom,ptData->y1); while(yScan < yScanBottom) { PULONG pulDstX; LONG xScanRight; LONG xScanLeft; clrRed.ullColor = pEdge->llRed; clrGreen.ullColor = pEdge->llGreen; clrBlue.ullColor = pEdge->llBlue; PBYTE pDitherLevel = &pDitherMatrix[(16 * ((yScan+yDitherOrg) & DITHER_8_MASK_Y))]; xScanLeft = MAX(pEdge->xLeft,ptData->rcl.left); xScanRight = MIN(pEdge->xRight,ptData->rcl.right); if (xScanLeft < xScanRight) { pulDstX = (PULONG)pDst + xScanLeft - ptData->rcl.left; LONG xScan = xScanLeft; // // skip span from left edge scan to left edge clip rect // LONG GradientLeft = ptData->rcl.left - pEdge->xLeft; if (GradientLeft > 0) { clrRed.ullColor += lldRdX * GradientLeft; clrGreen.ullColor += lldGdX * GradientLeft; clrBlue.ullColor += lldBdX * GradientLeft; } // // fill span within clipping boundary // while (xScan < xScanRight) { BYTE jDitherMatrix = *(pDitherLevel + ((xScan + xDitherOrg) & DITHER_8_MASK_X)); ULONG iRed = clrRed.b[7]; ULONG iGreen = clrGreen.b[7]; ULONG iBlue = clrBlue.b[7]; if (b1bpp) { jDitherMatrix *= 2; iRed = iRed + jDitherMatrix; if (iRed >= 255) { iRed = 255; } else { iRed = 0; } iGreen = iGreen + jDitherMatrix; if (iGreen >= 255) { iGreen = 255; } else { iGreen = 0; } iBlue = iBlue + jDitherMatrix; if (iBlue >= 255) { iBlue = 255; } else { iBlue = 0; } } else { iRed = pSaturationTable[iRed + jDitherMatrix]; iGreen = pSaturationTable[iGreen + jDitherMatrix]; iBlue = pSaturationTable[iBlue + jDitherMatrix]; } *pulDstX = (iRed << 16) | (iGreen << 8) | (iBlue ); pulDstX++; xScan++; clrRed.ullColor += lldRdX; clrGreen.ullColor += lldGdX; clrBlue.ullColor += lldBdX; } // // write span to device // BitBlt(pDibInfo->hdc, xScanLeft, yScan, xScanRight-xScanLeft, 1, hdc32, xScanLeft - ptData->rcl.left, 0, SRCCOPY); } pEdge++; yScan++; } if (hdc32 != NULL) { vFreeScanLineDC(hdc32); } } /******************************Public*Routine******************************\ * vFillTriDIB32BGRA * * * Arguments: * * pDibInfo - surface information * ptData - triangle information * * Return Value: * * * * History: * * 11/21/1996 Mark Enstrom [marke] * \**************************************************************************/ VOID vFillTriDIB32BGRA( PDIBINFO pDibInfo, PTRIANGLEDATA ptData ) { LONG lDelta = pDibInfo->stride; LONG yScan = ptData->y0; LONG yScanBottom; PBYTE pDst = (PBYTE)pDibInfo->pvBase + lDelta * yScan; PTRIEDGE pEdge = &ptData->TriEdge[0]; LONGLONG lldRdX = ptData->lldRdX; LONGLONG lldGdX = ptData->lldGdX; LONGLONG lldBdX = ptData->lldBdX; LONGLONG lldAdX = ptData->lldAdX; COLOR_INTERP clrRed,clrGreen,clrBlue,clrAlpha; yScanBottom = MIN(ptData->rcl.bottom,ptData->y1); while(yScan < yScanBottom) { PULONG pulDstX; PULONG pulDstScanRight,pulDstScanLeft; clrRed.ullColor = pEdge->llRed; clrGreen.ullColor = pEdge->llGreen; clrBlue.ullColor = pEdge->llBlue; clrAlpha.ullColor = pEdge->llAlpha; LONG xScanLeft = MAX(pEdge->xLeft,ptData->rcl.left); LONG xScanRight = MIN(pEdge->xRight,ptData->rcl.right); if (xScanLeft < xScanRight) { pulDstX = (PULONG)pDst + xScanLeft; pulDstScanRight = (PULONG)pDst + xScanRight; // // skip pixels from left edge to left clip, while // incrementing gradient // LONG GradientLeft = ptData->rcl.left - pEdge->xLeft; if (GradientLeft > 0) { clrRed.ullColor += lldRdX * GradientLeft; clrGreen.ullColor += lldGdX * GradientLeft; clrBlue.ullColor += lldBdX * GradientLeft; clrAlpha.ullColor += lldAdX * GradientLeft; } // // fill span // while (pulDstX < pulDstScanRight) { *pulDstX = (clrAlpha.b[7] << 24) | (clrRed.b[7] << 16) | (clrGreen.b[7] << 8) | (clrBlue.b[7]); pulDstX++; clrRed.ullColor += lldRdX; clrGreen.ullColor += lldGdX; clrBlue.ullColor += lldBdX; clrAlpha.ullColor += lldAdX; } } pDst += lDelta; pEdge++; yScan++; } } /******************************Public*Routine******************************\ * vFillTriDIB32RGB * * * Arguments: * * pDibInfo - surface information * ptData - triangle information * * Return Value: * * * * History: * * 11/21/1996 Mark Enstrom [marke] * \**************************************************************************/ VOID vFillTriDIB32RGB( PDIBINFO pDibInfo, PTRIANGLEDATA ptData ) { LONG lDelta = pDibInfo->stride; LONG yScan = ptData->y0; LONG yScanBottom; PBYTE pDst = (PBYTE)pDibInfo->pvBase + lDelta * yScan; PTRIEDGE pEdge = &ptData->TriEdge[0]; LONGLONG lldRdX = ptData->lldRdX; LONGLONG lldGdX = ptData->lldGdX; LONGLONG lldBdX = ptData->lldBdX; COLOR_INTERP clrRed,clrGreen,clrBlue; yScanBottom = MIN(ptData->rcl.bottom,ptData->y1); while(yScan < yScanBottom) { PULONG pulDstX; PULONG pulDstScanRight,pulDstScanLeft; clrRed.ullColor = pEdge->llRed; clrGreen.ullColor = pEdge->llGreen; clrBlue.ullColor = pEdge->llBlue; LONG xScanLeft = MAX(pEdge->xLeft,ptData->rcl.left); LONG xScanRight = MIN(pEdge->xRight,ptData->rcl.right); if (xScanLeft < xScanRight) { pulDstX = (PULONG)pDst + xScanLeft; pulDstScanRight = (PULONG)pDst + xScanRight; // // skip pixels from left edge to left clip, while // incrementing gradient // LONG GradientLeft = ptData->rcl.left - pEdge->xLeft; if (GradientLeft > 0) { clrRed.ullColor += lldRdX * GradientLeft; clrGreen.ullColor += lldGdX * GradientLeft; clrBlue.ullColor += lldBdX * GradientLeft; } // // fill span // while (pulDstX < pulDstScanRight) { *pulDstX = (clrBlue.b[7] << 16) | (clrGreen.b[7] << 8) | (clrRed.b[7]); pulDstX++; clrRed.ullColor += lldRdX; clrGreen.ullColor += lldGdX; clrBlue.ullColor += lldBdX; } } pDst += lDelta; pEdge++; yScan++; } } /******************************Public*Routine******************************\ * vFillTriDIB24RGB * * * Arguments: * * pDibInfo - surface information * ptData - triangle information * * Return Value: * * * * History: * * 11/21/1996 Mark Enstrom [marke] * \**************************************************************************/ VOID vFillTriDIB24RGB( PDIBINFO pDibInfo, PTRIANGLEDATA ptData ) { LONG lDelta = pDibInfo->stride; LONG yScan = ptData->y0; LONG yScanBottom; PBYTE pDst = (PBYTE)pDibInfo->pvBase + lDelta * yScan; PTRIEDGE pEdge = &ptData->TriEdge[0]; LONGLONG lldRdX = ptData->lldRdX; LONGLONG lldGdX = ptData->lldGdX; LONGLONG lldBdX = ptData->lldBdX; COLOR_INTERP clrRed,clrGreen,clrBlue; yScanBottom = MIN(ptData->rcl.bottom,ptData->y1); while(yScan < yScanBottom) { PBYTE pDstX; PBYTE pDstScanRight; clrRed.ullColor = pEdge->llRed; clrGreen.ullColor = pEdge->llGreen; clrBlue.ullColor = pEdge->llBlue; LONG xScanLeft = MAX(pEdge->xLeft,ptData->rcl.left); LONG xScanRight = MIN(pEdge->xRight,ptData->rcl.right); if (xScanLeft < xScanRight) { pDstX = pDst + 3 * xScanLeft; pDstScanRight = pDst + 3 * xScanRight; // // skip pixels from left edge to left clip, while // incrementing gradient // LONG GradientLeft = ptData->rcl.left - pEdge->xLeft; if (GradientLeft > 0) { clrRed.ullColor += lldRdX * GradientLeft; clrGreen.ullColor += lldGdX * GradientLeft; clrBlue.ullColor += lldBdX * GradientLeft; } while (pDstX < pDstScanRight) { *pDstX = clrBlue.b[7]; *(pDstX+1) = clrGreen.b[7]; *(pDstX+2) = clrRed.b[7]; clrRed.ullColor += lldRdX; clrGreen.ullColor += lldGdX; clrBlue.ullColor += lldBdX; pDstX+=3; } } pDst += lDelta; pEdge++; yScan++; } } /******************************Public*Routine******************************\ * vFillDIB16_565 * * * Arguments: * * pDibInfo - surface information * ptData - triangle information * * Return Value: * * * * History: * * 11/21/1996 Mark Enstrom [marke] * \**************************************************************************/ VOID vFillTriDIB16_565( PDIBINFO pDibInfo, PTRIANGLEDATA ptData ) { LONG lDelta = pDibInfo->stride; LONG yScan = ptData->y0; LONG yScanBottom; PBYTE pDst = (PBYTE)pDibInfo->pvBase + lDelta * yScan; PTRIEDGE pEdge = &ptData->TriEdge[0]; LONGLONG lldRdX = ptData->lldRdX; LONGLONG lldGdX = ptData->lldGdX; LONGLONG lldBdX = ptData->lldBdX; COLOR_INTERP clrRed,clrGreen,clrBlue; yScanBottom = MIN(ptData->rcl.bottom,ptData->y1); LONG yDitherOrg = ptData->ptDitherOrg.y; LONG xDitherOrg = ptData->ptDitherOrg.x; while(yScan < yScanBottom) { PUSHORT pusDstX,pusDstScanRight; PULONG pulDither = &gulDither32[0] + 4 * ((yScan+yDitherOrg) & 3); clrRed.ullColor = pEdge->llRed; clrGreen.ullColor = pEdge->llGreen; clrBlue.ullColor = pEdge->llBlue; LONG xScanRight = MIN(pEdge->xRight,ptData->rcl.right); LONG xScanLeft = MAX(pEdge->xLeft,ptData->rcl.left); if (xScanLeft < xScanRight) { pusDstX = (PUSHORT)pDst + xScanLeft; pusDstScanRight = (PUSHORT)pDst + xScanRight; // // skip pixels from left edge to left clip, while // incrementing gradient // LONG GradientLeft = ptData->rcl.left - pEdge->xLeft; if (GradientLeft > 0) { clrRed.ullColor += lldRdX * GradientLeft; clrGreen.ullColor += lldGdX * GradientLeft; clrBlue.ullColor += lldBdX * GradientLeft; } // // Gradient fill scan line with dither // while (pusDstX < pusDstScanRight) { ULONG ulDither = pulDither[(xScanLeft + xDitherOrg) & 3]; ULONG iRed = Saturation16_5[((clrRed.ul[1] >> (8+3)) + ulDither) >> 16]; ULONG iGreen = Saturation16_6[((clrGreen.ul[1] >> (8+2)) + ulDither) >> 16]; ULONG iBlue = Saturation16_5[((clrBlue.ul[1] >> (8+3)) + ulDither) >> 16]; *pusDstX = rgb565(iRed,iGreen,iBlue); xScanLeft++; pusDstX++; clrRed.ullColor += lldRdX; clrGreen.ullColor += lldGdX; clrBlue.ullColor += lldBdX; } } pDst += lDelta; pEdge++; yScan++; } } /******************************Public*Routine******************************\ * vFillTriDIB16_555 * * * Arguments: * * pDibInfo - surface information * ptData - triangle information * * Return Value: * * * * History: * * 11/21/1996 Mark Enstrom [marke] * \**************************************************************************/ VOID vFillTriDIB16_555( PDIBINFO pDibInfo, PTRIANGLEDATA ptData ) { LONG lDelta = pDibInfo->stride; LONG yScan = ptData->y0; LONG yScanBottom; PBYTE pDst = (PBYTE)pDibInfo->pvBase + lDelta * yScan; PTRIEDGE pEdge = &ptData->TriEdge[0]; LONGLONG lldRdX = ptData->lldRdX; LONGLONG lldGdX = ptData->lldGdX; LONGLONG lldBdX = ptData->lldBdX; COLOR_INTERP clrRed,clrGreen,clrBlue; yScanBottom = MIN(ptData->rcl.bottom,ptData->y1); LONG yDitherOrg = ptData->ptDitherOrg.y; LONG xDitherOrg = ptData->ptDitherOrg.x; while(yScan < yScanBottom) { PUSHORT pusDstX,pusDstScanRight; PULONG pulDither = &gulDither32[0] + 4 * ((yScan+yDitherOrg) & 3); clrRed.ullColor = pEdge->llRed; clrGreen.ullColor = pEdge->llGreen; clrBlue.ullColor = pEdge->llBlue; LONG xScanRight = MIN(pEdge->xRight,ptData->rcl.right); LONG xScanLeft = MAX(pEdge->xLeft,ptData->rcl.left); if (xScanLeft < xScanRight) { pusDstX = (PUSHORT)pDst + xScanLeft; pusDstScanRight = (PUSHORT)pDst + xScanRight; // // skip pixels from left edge to left clip, while // incrementing gradient // LONG GradientLeft = ptData->rcl.left - pEdge->xLeft; if (GradientLeft > 0) { clrRed.ullColor += lldRdX * GradientLeft; clrGreen.ullColor += lldGdX * GradientLeft; clrBlue.ullColor += lldBdX * GradientLeft; } // // Gradient fill scan line with dither // while (pusDstX < pusDstScanRight) { ULONG ulDither = pulDither[(xScanLeft + xDitherOrg) & 3]; ULONG iRed = Saturation16_5[((clrRed.ul[1] >> (8+3)) + ulDither) >> 16]; ULONG iGreen = Saturation16_5[((clrGreen.ul[1] >> (8+3)) + ulDither) >> 16]; ULONG iBlue = Saturation16_5[((clrBlue.ul[1] >> (8+3)) + ulDither) >> 16]; *pusDstX = rgb555(iRed,iGreen,iBlue); xScanLeft++; pusDstX++; clrRed.ullColor += lldRdX; clrGreen.ullColor += lldGdX; clrBlue.ullColor += lldBdX; } } pDst += lDelta; pEdge++; yScan++; } } //******************************************************************************* // // // // // Rectangle drawing routines // // // // // //******************************************************************************* /******************************Public*Routine******************************\ * vFillGRectDIB32BGRA * * * Arguments: * * * * Return Value: * * * * History: * * 11/21/1996 Mark Enstrom [marke] * \**************************************************************************/ VOID vFillGRectDIB32BGRA( PDIBINFO pDibInfo, PGRADIENTRECTDATA pgData ) { LONG lDelta = pDibInfo->stride; LONG cyClip = pgData->szDraw.cy; // // fill rect with gradient fill. if this is horizontal mode then // draw one scan line and replicate in v, if this is vertical mode then // draw one vertical stripe and replicate in h // COLOR_INTERP clrR,clrG,clrB,clrA; if (pgData->ulMode == GRADIENT_FILL_RECT_H) { PBYTE pjDst = (PBYTE)pDibInfo->pvBase + lDelta * pgData->ptDraw.y; PULONG pulBuffer = (PULONG)LOCALALLOC(4 * pgData->szDraw.cx); if (pulBuffer) { clrR.ullColor = pgData->llRed; clrG.ullColor = pgData->llGreen; clrB.ullColor = pgData->llBlue; clrA.ullColor = pgData->llAlpha; LONGLONG lldRdX = pgData->lldRdX; LONGLONG lldGdX = pgData->lldGdX; LONGLONG lldBdX = pgData->lldBdX; LONGLONG lldAdX = pgData->lldAdX; // // adjust gradient fill for clipped portion // if (pgData->xScanAdjust > 0) { clrR.ullColor += lldRdX * (pgData->xScanAdjust); clrG.ullColor += lldGdX * (pgData->xScanAdjust); clrB.ullColor += lldBdX * (pgData->xScanAdjust); clrA.ullColor += lldAdX * (pgData->xScanAdjust); } // // draw 1 scan line // PULONG pulDstX = pulBuffer; PULONG pulEndX = pulDstX + pgData->szDraw.cx; while (pulDstX != pulEndX) { *pulDstX = (ULONG)(((clrA.b[6]) << 24) | ((clrR.b[6]) << 16) | ((clrG.b[6]) << 8) | ((clrB.b[6]))); clrR.ullColor += lldRdX; clrG.ullColor += lldGdX; clrB.ullColor += lldBdX; clrA.ullColor += lldAdX; pulDstX++; } // // replicate // PULONG pulDstY = (PULONG)pjDst + pgData->ptDraw.x; PULONG pulEndY = (PULONG)((PBYTE)pulDstY + lDelta * cyClip); while (pulDstY != pulEndY) { memcpy(pulDstY,pulBuffer,4*pgData->szDraw.cx); pulDstY = (PULONG)((PBYTE)pulDstY + lDelta); } LOCALFREE(pulBuffer); } } else { clrR.ullColor = pgData->llRed; clrG.ullColor = pgData->llGreen; clrB.ullColor = pgData->llBlue; clrA.ullColor = pgData->llAlpha; LONGLONG lldRdY = pgData->lldRdY; LONGLONG lldGdY = pgData->lldGdY; LONGLONG lldBdY = pgData->lldBdY; LONGLONG lldAdY = pgData->lldAdY; // // vertical gradient. // replicate each x value accross whole scan line // if (pgData->yScanAdjust > 0) { clrR.ullColor += lldRdY * (pgData->yScanAdjust); clrG.ullColor += lldGdY * (pgData->yScanAdjust); clrB.ullColor += lldBdY * (pgData->yScanAdjust); clrA.ullColor += lldAdY * (pgData->yScanAdjust); } PBYTE pDst = (PBYTE)pDibInfo->pvBase + lDelta * pgData->ptDraw.y; pDst = pDst + 4 * pgData->ptDraw.x; while (cyClip--) { ULONG ul = (ULONG)(((clrA.b[6]) << 24) | ((clrR.b[6]) << 16) | ((clrG.b[6]) << 8) | ((clrB.b[6]))); ImgFillMemoryULONG(pDst,pgData->szDraw.cx*4,ul); clrR.ullColor += lldRdY; clrG.ullColor += lldGdY; clrB.ullColor += lldBdY; clrA.ullColor += lldAdY; pDst += lDelta; } } } /******************************Public*Routine******************************\ * vFillGRectDIB32RGB * * * Arguments: * * * * Return Value: * * * * History: * * 11/21/1996 Mark Enstrom [marke] * \**************************************************************************/ VOID vFillGRectDIB32RGB( PDIBINFO pDibInfo, PGRADIENTRECTDATA pgData ) { LONG lDelta = pDibInfo->stride; LONG cyClip = pgData->szDraw.cy; // // fill rect with gradient fill. if this is horizontal mode then // draw one scan line and replicate in v, if this is vertical mode then // draw one vertical stripe and replicate in h // COLOR_INTERP clrR,clrG,clrB,clrA; clrR.ullColor = pgData->llRed; clrG.ullColor = pgData->llGreen; clrB.ullColor = pgData->llBlue; if (pgData->ulMode == GRADIENT_FILL_RECT_H) { PBYTE pjDst = (PBYTE)pDibInfo->pvBase + lDelta * pgData->ptDraw.y; PULONG pulBuffer = (PULONG)LOCALALLOC(4 * pgData->szDraw.cx); if (pulBuffer) { LONGLONG lldRed = pgData->lldRdX; LONGLONG lldGreen = pgData->lldGdX; LONGLONG lldBlue = pgData->lldBdX; // // adjust gradient fill for clipped portion // if (pgData->xScanAdjust > 0) { clrR.ullColor += lldRed * (pgData->xScanAdjust); clrG.ullColor += lldGreen * (pgData->xScanAdjust); clrB.ullColor += lldBlue * (pgData->xScanAdjust); } // // draw 1 scan line to temp buffer // PULONG pulDstX = pulBuffer; PULONG pulEndX = pulDstX + pgData->szDraw.cx; while (pulDstX != pulEndX) { *pulDstX = (ULONG)( ((clrR.b[6])) | ((clrG.b[6]) << 8) | ((clrB.b[6]) << 16)); clrR.ullColor += lldRed; clrG.ullColor += lldGreen; clrB.ullColor += lldBlue; pulDstX++; } // // replicate // PULONG pulDstY = (PULONG)pjDst + pgData->ptDraw.x; PULONG pulEndY = (PULONG)((PBYTE)pulDstY + lDelta * cyClip); while (pulDstY != pulEndY) { memcpy(pulDstY,pulBuffer,4*pgData->szDraw.cx); pulDstY = (PULONG)((PBYTE)pulDstY + lDelta); } LOCALFREE(pulBuffer); } } else { LONGLONG lldRed = pgData->lldRdY; LONGLONG lldGreen = pgData->lldGdY; LONGLONG lldBlue = pgData->lldBdY; // // vertical gradient. // replicate each x value accross whole scan line // if (pgData->yScanAdjust > 0) { clrR.ullColor += lldRed * (pgData->yScanAdjust); clrG.ullColor += lldGreen * (pgData->yScanAdjust); clrB.ullColor += lldBlue * (pgData->yScanAdjust); } PBYTE pDst = (PBYTE)pDibInfo->pvBase + lDelta * pgData->ptDraw.y; pDst = pDst + 4 * pgData->ptDraw.x; while (cyClip--) { ULONG ul = (ULONG)( ((clrR.b[6]) ) | ((clrG.b[6]) << 8) | ((clrB.b[6]) << 16)); ImgFillMemoryULONG(pDst,pgData->szDraw.cx*4,ul); clrR.ullColor += lldRed; clrG.ullColor += lldGreen; clrB.ullColor += lldBlue; pDst += lDelta; } } } /******************************Public*Routine******************************\ * vFillGRectDIB24RGB * * * Arguments: * * * * Return Value: * * * * History: * * 11/21/1996 Mark Enstrom [marke] * \**************************************************************************/ VOID vFillGRectDIB24RGB( PDIBINFO pDibInfo, PGRADIENTRECTDATA pgData ) { LONG lDelta = pDibInfo->stride; LONG cyClip = pgData->szDraw.cy; PBYTE pDst = (PBYTE)pDibInfo->pvBase + lDelta * pgData->ptDraw.y; COLOR_INTERP clrR,clrG,clrB,clrAlpha; clrR.ullColor = pgData->llRed; clrG.ullColor = pgData->llGreen; clrB.ullColor = pgData->llBlue; // // fill rect with gradient fill. if this is horizontal mode then // draw one scan line and replicate in v, if this is vertical mode then // draw one vertical stripe and replicate in h // if (pgData->ulMode == GRADIENT_FILL_RECT_H) { LONGLONG lldRed = pgData->lldRdX; LONGLONG lldGreen = pgData->lldGdX; LONGLONG lldBlue = pgData->lldBdX; // // adjust gradient fill for clipped portion // if (pgData->xScanAdjust > 0) { clrR.ullColor += lldRed * (pgData->xScanAdjust); clrG.ullColor += lldGreen * (pgData->xScanAdjust); clrB.ullColor += lldBlue * (pgData->xScanAdjust); } PBYTE pBuffer = (PBYTE)LOCALALLOC(3 * pgData->szDraw.cx); if (pBuffer) { if (pBuffer) { PBYTE pDstX = pBuffer; PBYTE pLast = pDstX + 3 * pgData->szDraw.cx; while (pDstX != pLast) { *pDstX = (clrB.b[6]); *(pDstX+1) = (clrG.b[6]); *(pDstX+2) = (clrR.b[6]); clrR.ullColor += lldRed; clrG.ullColor += lldGreen; clrB.ullColor += lldBlue; pDstX+=3; } // // Replicate the scan line. It would be much better to write the scan line // out to a memory buffer for drawing to a device surface // PBYTE pDst = (PBYTE)pDibInfo->pvBase + lDelta * pgData->ptDraw.y + 3 * pgData->ptDraw.x; while (cyClip--) { memcpy(pDst,pBuffer,3*pgData->szDraw.cx); pDst += lDelta; } LOCALFREE(pBuffer); } } } else { // // vertical gradient. // replicate each x value accross whole scan line // PBYTE pDst = (PBYTE)pDibInfo->pvBase + lDelta * pgData->ptDraw.y; LONGLONG lldRed = pgData->lldRdY; LONGLONG lldGreen = pgData->lldGdY; LONGLONG lldBlue = pgData->lldBdY; // // vertical gradient. // replicate each x value accross whole scan line // if (pgData->yScanAdjust > 0) { clrR.ullColor += lldRed * (pgData->yScanAdjust); clrG.ullColor += lldGreen * (pgData->yScanAdjust); clrB.ullColor += lldBlue * (pgData->yScanAdjust); } pDst = pDst + 3 * pgData->ptDraw.x; while (cyClip--) { // // fill scan line with solid color // PBYTE pTemp = pDst; PBYTE pEnd = pDst + 3 * pgData->szDraw.cx; while (pTemp != pEnd) { *pTemp = clrB.b[6]; *(pTemp+1) = clrG.b[6]; *(pTemp+2) = clrR.b[6]; pTemp+=3; } // // increment colors for next scan line // clrR.ullColor += lldRed; clrG.ullColor += lldGreen; clrB.ullColor += lldBlue; // // inc pointer to next scan line // pDst += lDelta; } } } /******************************Public*Routine******************************\ * vFillGRectDIB16_565 * * * Arguments: * * * * Return Value: * * * * History: * * 11/21/1996 Mark Enstrom [marke] * \**************************************************************************/ VOID vFillGRectDIB16_565( PDIBINFO pDibInfo, PGRADIENTRECTDATA pgData ) { LONG lDelta = pDibInfo->stride; LONG cxClip = pgData->szDraw.cx; LONG yScan = pgData->ptDraw.y; LONG yScanBottom = yScan + pgData->szDraw.cy; PBYTE pDst = (PBYTE)pDibInfo->pvBase + lDelta * pgData->ptDraw.y; LONGLONG lldxRed = pgData->lldRdX; LONGLONG lldxGreen = pgData->lldGdX; LONGLONG lldxBlue = pgData->lldBdX; LONGLONG lldyRed = pgData->lldRdY; LONGLONG lldyGreen = pgData->lldGdY; LONGLONG lldyBlue = pgData->lldBdY; // // lleRed,Green,Blue keep track of color gradient // in y. This may be repeated each scan line for different // dither values. PERF could allocate temp scan line // buffer, run gradient 1 time and dither from this source // ULONGLONG lleRed; ULONGLONG lleGreen; ULONGLONG lleBlue; lleRed = pgData->llRed; lleGreen = pgData->llGreen; lleBlue = pgData->llBlue; PULONG pulDither; // // skip down to left edge // if (pgData->yScanAdjust) { lleRed += lldyRed * (pgData->yScanAdjust); lleGreen += lldyGreen * (pgData->yScanAdjust); lleBlue += lldyBlue * (pgData->yScanAdjust); } LONG yDitherOrg = pgData->ptDitherOrg.y; LONG xDitherOrg = pgData->ptDitherOrg.x; while(yScan < yScanBottom) { PUSHORT pusDstX; PUSHORT pusDstScanRight,pusDstScanLeft; LONG xScan; COLOR_INTERP clrR,clrG,clrB,clrAlpha; pulDither = &gulDither32[0] + 4 * ((yScan + yDitherOrg) & 3); clrR.ullColor = lleRed; clrG.ullColor = lleGreen; clrB.ullColor = lleBlue; if (pgData->xScanAdjust) { clrR.ullColor += lldxRed * (pgData->xScanAdjust); clrG.ullColor += lldxGreen * (pgData->xScanAdjust); clrB.ullColor += lldxBlue * (pgData->xScanAdjust); } xScan = pgData->ptDraw.x + xDitherOrg; pusDstX = (PUSHORT)pDst + pgData->ptDraw.x; pusDstScanRight = pusDstX + pgData->szDraw.cx; while (pusDstX < pusDstScanRight) { ULONG ulDither = pulDither[xScan & 3]; ULONG iRed = Saturation16_5[((clrR.ul[1] >> (3)) + ulDither) >> 16]; ULONG iGreen = Saturation16_6[((clrG.ul[1] >> (2)) + ulDither) >> 16]; ULONG iBlue = Saturation16_5[((clrB.ul[1] >> (3)) + ulDither) >> 16]; *pusDstX = rgb565(iRed,iGreen,iBlue); pusDstX++; xScan++; clrR.ullColor += lldxRed; clrG.ullColor += lldxGreen; clrB.ullColor += lldxBlue; } lleRed += lldyRed; lleGreen += lldyGreen; lleBlue += lldyBlue; yScan++; pDst += lDelta; } } /******************************Public*Routine******************************\ * vFillGRectDIB16_555 * * * Arguments: * * * * Return Value: * * * * History: * * 11/21/1996 Mark Enstrom [marke] * \**************************************************************************/ VOID vFillGRectDIB16_555( PDIBINFO pDibInfo, PGRADIENTRECTDATA pgData ) { LONG lDelta = pDibInfo->stride; LONG cxClip = pgData->szDraw.cx; LONG yScan = pgData->ptDraw.y; LONG yScanBottom = yScan + pgData->szDraw.cy; PBYTE pDst = (PBYTE)pDibInfo->pvBase + lDelta * pgData->ptDraw.y; LONGLONG lldxRed = pgData->lldRdX; LONGLONG lldxGreen = pgData->lldGdX; LONGLONG lldxBlue = pgData->lldBdX; LONGLONG lldyRed = pgData->lldRdY; LONGLONG lldyGreen = pgData->lldGdY; LONGLONG lldyBlue = pgData->lldBdY; // // lleRed,Green,Blue keep track of color gradient // in y. This may be repeated each scan line for different // dither values. PERF could allocate temp scan line // buffer, run gradient 1 time and dither from this source // ULONGLONG lleRed; ULONGLONG lleGreen; ULONGLONG lleBlue; PULONG pulDither; // // skip down to left edge // lleRed = pgData->llRed; lleGreen = pgData->llGreen; lleBlue = pgData->llBlue; if (pgData->yScanAdjust) { lleRed += lldyRed * (pgData->yScanAdjust); lleGreen += lldyGreen * (pgData->yScanAdjust); lleBlue += lldyBlue * (pgData->yScanAdjust); } LONG yDitherOrg = pgData->ptDitherOrg.y; while(yScan < yScanBottom) { PUSHORT pusDstX; PUSHORT pusDstScanRight,pusDstScanLeft; COLOR_INTERP clrR,clrG,clrB,clrAlpha; LONG xScan; pulDither = &gulDither32[0] + 4 * ((yScan + yDitherOrg) & 3); clrR.ullColor = lleRed; clrG.ullColor = lleGreen; clrB.ullColor = lleBlue; if (pgData->xScanAdjust) { clrR.ullColor += lldxRed * (pgData->xScanAdjust); clrG.ullColor += lldxGreen * (pgData->xScanAdjust); clrB.ullColor += lldxBlue * (pgData->xScanAdjust); } xScan = pgData->ptDraw.x + pgData->ptDitherOrg.x; pusDstX = (PUSHORT)pDst + pgData->ptDraw.x; pusDstScanRight = pusDstX + pgData->szDraw.cx; while (pusDstX < pusDstScanRight) { ULONG ulDither = pulDither[xScan & 3]; ULONG iRed = Saturation16_5[((clrR.ul[1] >> (3)) + ulDither) >> 16]; ULONG iGreen = Saturation16_5[((clrG.ul[1] >> (3)) + ulDither) >> 16]; ULONG iBlue = Saturation16_5[((clrB.ul[1] >> (3)) + ulDither) >> 16]; *pusDstX = rgb555(iRed,iGreen,iBlue); pusDstX++; xScan++; clrR.ullColor += lldxRed; clrG.ullColor += lldxGreen; clrB.ullColor += lldxBlue; } lleRed += lldyRed; lleGreen += lldyGreen; lleBlue += lldyBlue; yScan ++; pDst += lDelta; } } /******************************Public*Routine******************************\ * vFillGRectDIB32Direct * * This routine draws in dithered 32 bpp and is used to diplay on 8,4,1 * surfaces * * Arguments: * * pDibInfo - surface information * pgData - gradient rectange information * * Return Value: * * none * * History: * * 11/21/1996 Mark Enstrom [marke] * \**************************************************************************/ VOID vFillGRectDIB32Direct( PDIBINFO pDibInfo, PGRADIENTRECTDATA pgData ) { LONG lDelta = pDibInfo->stride; LONG yScan = pgData->ptDraw.y; LONG yScanBottom = yScan + pgData->szDraw.cy; PULONG pulDst; HDC hdc32; LONGLONG lldxRed = pgData->lldRdX; LONGLONG lldxGreen = pgData->lldGdX; LONGLONG lldxBlue = pgData->lldBdX; LONGLONG lldyRed = pgData->lldRdY; LONGLONG lldyGreen = pgData->lldGdY; LONGLONG lldyBlue = pgData->lldBdY; // // lleRed,Green,Blue keep track of color gradient // in y. This may be repeated each scan line for different // dither values. PERF could allocate temp scan line // buffer, run gradient 1 time and dither from this source // ULONGLONG lleRed; ULONGLONG lleGreen; ULONGLONG lleBlue; PBYTE pDitherMatrix = gDitherMatrix16x16Halftone; PBYTE pSaturationTable = HalftoneSaturationTable; BOOL b1bpp = (pDibInfo->pbmi->bmiHeader.biBitCount == 1); // WINBUG #365339 4-10-2001 jasonha Investigate using default dither table // // Old Comment: // - should use default dither table for 8bpp w/o // halftone palette // if ( (pDibInfo->pbmi->bmiHeader.biBitCount == 4) || (b1bpp) ) { pDitherMatrix = gDitherMatrix16x16Default; pSaturationTable = DefaultSaturationTable; } // // get scan line buffer with 32 bpp DC // hdc32 = hdcAllocateScanLineDC(pgData->szDraw.cx,&pulDst); if (hdc32 == NULL) { return; } // // skip down to left edge // lleRed = pgData->llRed; lleGreen = pgData->llGreen; lleBlue = pgData->llBlue; if (pgData->yScanAdjust) { lleRed += lldyRed * (pgData->yScanAdjust); lleGreen += lldyGreen * (pgData->yScanAdjust); lleBlue += lldyBlue * (pgData->yScanAdjust); } LONG yDitherOrg = pgData->ptDitherOrg.y; LONG xDitherOrg = pgData->ptDitherOrg.x; while(yScan < yScanBottom) { PULONG pulDstX; LONG xScanLeft = pgData->ptDraw.x; LONG xScan = xScanLeft; LONG xScanRight = xScanLeft + pgData->szDraw.cx; ULONG Red; ULONG Green; ULONG Blue; COLOR_INTERP clrR,clrG,clrB,clrAlpha; clrR.ullColor = lleRed; clrG.ullColor = lleGreen; clrB.ullColor = lleBlue; if (pgData->xScanAdjust) { clrR.ullColor += lldxRed * (pgData->xScanAdjust); clrG.ullColor += lldxGreen * (pgData->xScanAdjust); clrB.ullColor += lldxBlue * (pgData->xScanAdjust); } pulDstX = pulDst + xScanLeft; PBYTE pDitherLevel = &pDitherMatrix[(16 * ((yScan+yDitherOrg) & DITHER_8_MASK_Y))]; while (xScan < xScanRight) { // // calculate x component of dither // ULONG iRed = clrR.b[6]; ULONG iGreen = clrG.b[6]; ULONG iBlue = clrB.b[6]; BYTE jDitherMatrix = *(pDitherLevel + ((xScan + xDitherOrg) & DITHER_8_MASK_X)); if (b1bpp) { jDitherMatrix *= 2; iRed = iRed + jDitherMatrix; if (iRed >= 255) { iRed = 255; } else { iRed = 0; } iGreen = iGreen + jDitherMatrix; if (iGreen >= 255) { iGreen = 255; } else { iGreen = 0; } iBlue = iBlue + jDitherMatrix; if (iBlue >= 255) { iBlue = 255; } else { iBlue = 0; } } else { iRed = pSaturationTable[iRed + jDitherMatrix]; iGreen = pSaturationTable[iGreen + jDitherMatrix]; iBlue = pSaturationTable[iBlue + jDitherMatrix]; } *pulDstX = ((iRed << 16) | (iGreen << 8) | iBlue); xScan++; pulDstX++; clrR.ullColor += lldxRed; clrG.ullColor += lldxGreen; clrB.ullColor += lldxBlue; } // // write span to device // BitBlt(pDibInfo->hdc, xScanLeft, yScan, xScanRight-xScanLeft, 1, hdc32, xScanLeft, 0, SRCCOPY); // // add y color increment // lleRed += lldyRed; lleGreen += lldyGreen; lleBlue += lldyBlue; yScan++; } if (hdc32) { vFreeScanLineDC(hdc32); } } #endif