813 lines
32 KiB
C
813 lines
32 KiB
C
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/******************************Module*Header*******************************\
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* Module Name: span_f.h *
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* *
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* This include file is used to generate various flavors of flat-shaded *
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* spans, or scanlines. The variations cover RGB/Color-indexed operation, *
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* dithering, and pixel-depth. Not your typical include file. *
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* *
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* Created: 24-Feb-1994 *
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* Author: Otto Berkes [ottob] *
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* *
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* Copyright (c) 1994 Microsoft Corporation *
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\**************************************************************************/
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#undef STRING1
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#undef STRING2
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#undef STRING3
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#undef STRING4
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#if ZBUFFER
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#define STRING1 __fastGenMask
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#else
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#define STRING1 __fastGen
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#endif
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#if RGBMODE
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#define STRING2 RGB
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#else
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#define STRING2 CI
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#endif
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#if DITHER
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#define STRING3 STRCAT2(BPP, Dith)
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#else
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#define STRING3 BPP
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#endif
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#define STRING4 FlatSpan
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#undef OLDTEXTURE
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#define OLDTEXTURE 0
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void FASTCALL STRCAT4(STRING1, STRING2, STRING3, STRING4)
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(__GLGENcontext *gengc)
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{
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ULONG rAccum;
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ULONG rShift;
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#if RGBMODE
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ULONG gAccum;
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ULONG bAccum;
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ULONG gShift;
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ULONG bShift;
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#endif
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GENACCEL *pGenAccel;
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__GLcolorBuffer *cfb;
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BYTE *pPix;
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#if (BPP == 8)
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BYTE *pXlat;
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#elif (!RGBMODE)
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ULONG *pXlat;
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#endif
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#if DITHER
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ULONG ditherShift;
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ULONG ditherRow;
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ULONG ditherVal;
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#endif
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LONG count, cDith;
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ULONG color1;
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#if DITHER
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#if (RGBMODE) || (BPP > 8)
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ULONG color2;
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ULONG color3;
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ULONG color4;
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#endif
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#elif (BPP == 24)
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ULONG color2;
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ULONG color3;
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#endif
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pGenAccel = (GENACCEL *)(gengc->pPrivateArea);
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cfb = gengc->gc.polygon.shader.cfb;
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// get color deltas and accumulators
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rAccum = pGenAccel->spanValue.r;
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rShift = cfb->redShift;
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#if RGBMODE
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gAccum = pGenAccel->spanValue.g;
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bAccum = pGenAccel->spanValue.b;
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gShift = cfb->greenShift;
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bShift = cfb->blueShift;
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#endif
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// get address of destination
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if (pGenAccel->flags & SURFACE_TYPE_DIB) {
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pPix = pGenAccel->pPix +
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gengc->gc.polygon.shader.frag.x * (BPP / 8);
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} else {
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pPix = gengc->ColorsBits;
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}
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// set up pointer to translation table as needed
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#if (BPP == 8)
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pXlat = gengc->pajTranslateVector;
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#elif (!RGBMODE)
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pXlat = (ULONG *)(gengc->pajTranslateVector + sizeof(DWORD));
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#endif
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cDith = (
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gengc->gc.polygon.shader.length >= 4
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? 4
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: gengc->gc.polygon.shader.length);
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#if DITHER
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ditherRow = Dither_4x4[gengc->gc.polygon.shader.frag.y & 0x3];
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ditherShift = (gengc->gc.polygon.shader.frag.x & 0x3) << 3;
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#if RGBMODE
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ditherVal = ((ditherRow >> ditherShift) & 0xff) << 8;
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color1 = (((rAccum + ditherVal) >> 16) << rShift) |
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(((gAccum + ditherVal) >> 16) << gShift) |
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(((bAccum + ditherVal) >> 16) << bShift);
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#if (BPP == 8)
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color1 = *(pXlat + (color1 & 0xff));
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#endif
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if (--cDith) {
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ditherShift = (ditherShift + 8) & 0x18;
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ditherVal = ((ditherRow >> ditherShift) & 0xff) << 8;
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color2 = (((rAccum + ditherVal) >> 16) << rShift) |
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(((gAccum + ditherVal) >> 16) << gShift) |
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(((bAccum + ditherVal) >> 16) << bShift);
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#if (BPP == 8)
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color1 |= (*(pXlat + (color2 & 0xff))) << 8;
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#endif
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if (--cDith) {
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ditherShift = (ditherShift + 8) & 0x18;
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ditherVal = ((ditherRow >> ditherShift) & 0xff) << 8;
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color3 = (((rAccum + ditherVal) >> 16) << rShift) |
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(((gAccum + ditherVal) >> 16) << gShift) |
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(((bAccum + ditherVal) >> 16) << bShift);
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#if (BPP == 8)
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color1 |= (*(pXlat + (color3 & 0xff))) << 16;
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#endif
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if (--cDith) {
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ditherShift = (ditherShift + 8) & 0x18;
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ditherVal = ((ditherRow >> ditherShift) & 0xff) << 8;
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color4 = (((rAccum + ditherVal) >> 16) << rShift) |
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(((gAccum + ditherVal) >> 16) << gShift) |
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(((bAccum + ditherVal) >> 16) << bShift);
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#if (BPP == 8)
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color1 |= (*(pXlat + (color4 & 0xff))) << 24;
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#endif
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}
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}
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}
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#else //!RGBMODE
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ditherVal = ((ditherRow >> ditherShift) & 0xff) << 8;
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#if (BPP == 8)
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color1 = *(pXlat + (((rAccum + ditherVal) >> 16) & 0xff));
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#else
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color1 = *(pXlat + (((rAccum + ditherVal) >> 16) & 0xfff));
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#endif
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if (--cDith) {
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ditherShift = (ditherShift + 8) & 0x18;
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ditherVal = ((ditherRow >> ditherShift) & 0xff) << 8;
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#if (BPP == 8)
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color1 |= (*(pXlat + (((rAccum + ditherVal) >> 16) & 0xff)) << 8);
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#else
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color2 = *(pXlat + (((rAccum + ditherVal) >> 16) & 0xfff));
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#endif
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if (--cDith) {
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ditherShift = (ditherShift + 8) & 0x18;
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ditherVal = ((ditherRow >> ditherShift) & 0xff) << 8;
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#if (BPP == 8)
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color1 |= (*(pXlat + (((rAccum + ditherVal) >> 16) & 0xff)) << 16);
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#else
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color3= *(pXlat + (((rAccum + ditherVal) >> 16) & 0xfff));
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#endif
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if (--cDith) {
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ditherShift = (ditherShift + 8) & 0x18;
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ditherVal = ((ditherRow >> ditherShift) & 0xff) << 8;
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#if (BPP == 8)
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color1 |= (*(pXlat + (((rAccum + ditherVal) >> 16) & 0xff)) << 24);
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#else
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color4 = *(pXlat + (((rAccum + ditherVal) >> 16) & 0xfff));
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#endif
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}
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}
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}
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#endif //!RGBMODE
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#else //!DITHER
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#if RGBMODE
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color1 = (((rAccum + 0x0800) >> 16) << rShift) |
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(((gAccum + 0x0800) >> 16) << gShift) |
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(((bAccum + 0x0800) >> 16) << bShift);
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#if (BPP == 8)
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color1 = *(pXlat + (color1 & 0xff));
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#endif
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#if (BPP == 16)
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color1 = color1 | (color1 << 16);
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#elif (BPP == 24)
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color2 = color1 >> 8;
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color3 = color1 >> 16;
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#endif
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#else //!RGBMODE
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#if (BPP == 8)
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color1 = *(pXlat + (((rAccum + 0x0800) >> 16) & 0xff));
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#else
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color1 = *(pXlat + (((rAccum + 0x0800) >> 16) & 0xfff));
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#endif
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#if (BPP == 16)
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color1 = color1 | (color1 << 16);
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#elif (BPP == 24)
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color2 = color1 >> 8;
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color3 = color1 >> 16;
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#endif
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#endif //!RGBMODE
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#endif //!DITHER
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#if (ZBUFFER)
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if (pGenAccel->flags & GEN_FASTZBUFFER) {
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GLuint zAccum = gengc->gc.polygon.shader.frag.z;
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GLint zDelta = gengc->gc.polygon.shader.dzdx;
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PBYTE zbuf = (PBYTE)gengc->gc.polygon.shader.zbuf;
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count = gengc->gc.polygon.shader.length;
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if (gengc->gc.modes.depthBits == 16) {
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#if DITHER
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for (;;) {
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if ( ((__GLz16Value)(zAccum >> Z16_SHIFT)) <= *((__GLz16Value*)zbuf) ) {
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*((__GLz16Value*)zbuf) = ((__GLz16Value)(zAccum >> Z16_SHIFT));
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#if (BPP == 8)
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*pPix = (BYTE)color1;
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#elif (BPP == 16)
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*((WORD *)pPix) = (WORD)color1;
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#elif (BPP == 24)
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*pPix = (BYTE)color1;
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*(pPix + 1) = (BYTE)(color1 >> 8);
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*(pPix + 2) = (BYTE)(color1 >> 16);
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#else
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*((DWORD *)pPix) = color1;
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#endif
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}
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pPix += (BPP / 8);
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if (--count <= 0)
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break;
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zAccum += zDelta;
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zbuf += 2;
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if ( ((__GLz16Value)(zAccum >> Z16_SHIFT)) <= *((__GLz16Value*)zbuf) ) {
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*((__GLz16Value*)zbuf) = ((__GLz16Value)(zAccum >> Z16_SHIFT));
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#if (BPP == 8)
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*pPix = (BYTE)(color1 >> 8);
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#elif (BPP == 16)
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*((WORD *)pPix) = (WORD)color2;
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#elif (BPP == 24)
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*pPix = (BYTE)color2;
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*(pPix + 1) = (BYTE)(color2 >> 8);
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*(pPix + 2) = (BYTE)(color2 >> 16);
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#else
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*((DWORD *)pPix) = color2;
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#endif
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}
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pPix += (BPP / 8);
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if (--count <= 0)
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break;
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zAccum += zDelta;
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zbuf += 2;
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if ( ((__GLz16Value)(zAccum >> Z16_SHIFT)) <= *((__GLz16Value*)zbuf) ) {
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*((__GLz16Value*)zbuf) = ((__GLz16Value)(zAccum >> Z16_SHIFT));
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#if (BPP == 8)
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*pPix = (BYTE)(color1 >> 16);
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#elif (BPP == 16)
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*((WORD *)pPix) = (WORD)color3;
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#elif (BPP == 24)
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*pPix = (BYTE)color3;
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*(pPix + 1) = (BYTE)(color3 >> 8);
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*(pPix + 2) = (BYTE)(color3 >> 16);
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#else
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*((DWORD *)pPix) = color3;
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#endif
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}
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pPix += (BPP / 8);
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if (--count <= 0)
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break;
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zAccum += zDelta;
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zbuf += 2;
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if ( ((__GLz16Value)(zAccum >> Z16_SHIFT)) <= *((__GLz16Value*)zbuf) ) {
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*((__GLz16Value*)zbuf) = ((__GLz16Value)(zAccum >> Z16_SHIFT));
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#if (BPP == 8)
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*pPix = (BYTE)(color1 >> 24);
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#elif (BPP == 16)
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*((WORD *)pPix) = (WORD)color4;
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#elif (BPP == 24)
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*pPix = (BYTE)color4;
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*(pPix + 1) = (BYTE)(color4 >> 8);
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*(pPix + 2) = (BYTE)(color4 >> 16);
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#else
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*((DWORD *)pPix) = color4;
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#endif
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}
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pPix += (BPP / 8);
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if (--count <= 0)
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break;
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zAccum += zDelta;
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zbuf += 2;
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}
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#else //!DITHER
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for (; count; count--) {
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if ( ((__GLz16Value)(zAccum >> Z16_SHIFT)) <= *((__GLz16Value*)zbuf) ) {
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*((__GLz16Value*)zbuf) = ((__GLz16Value)(zAccum >> Z16_SHIFT));
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#if (BPP == 8)
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*pPix = (BYTE)color1;
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#elif (BPP == 16)
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*((WORD *)pPix) = (WORD)color1;
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#elif (BPP == 24)
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*pPix = (BYTE)color1;
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*(pPix + 1) = (BYTE)color2;
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*(pPix + 2) = (BYTE)color3;
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#else
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*((DWORD *)pPix) = color1;
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#endif //BPP
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}
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zAccum += zDelta;
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zbuf +=2 ;
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pPix += (BPP / 8);
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}
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#endif //!DITHER
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} else {
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#if DITHER
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for (;;) {
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if ( zAccum <= *((GLuint*)zbuf) ) {
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*((GLuint*)zbuf) = zAccum;
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#if (BPP == 8)
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*pPix = (BYTE)color1;
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|
|
#elif (BPP == 16)
|
||
|
|
*((WORD *)pPix) = (WORD)color1;
|
||
|
|
#elif (BPP == 24)
|
||
|
|
*pPix = (BYTE)color1;
|
||
|
|
*(pPix + 1) = (BYTE)(color1 >> 8);
|
||
|
|
*(pPix + 2) = (BYTE)(color1 >> 16);
|
||
|
|
#else
|
||
|
|
*((DWORD *)pPix) = color1;
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
pPix += (BPP / 8);
|
||
|
|
if (--count <= 0)
|
||
|
|
break;
|
||
|
|
|
||
|
|
zbuf+=4;
|
||
|
|
zAccum += zDelta;
|
||
|
|
if ( zAccum <= *((GLuint*)zbuf) ) {
|
||
|
|
*((GLuint*)zbuf) = zAccum;
|
||
|
|
|
||
|
|
#if (BPP == 8)
|
||
|
|
*pPix = (BYTE)(color1 >> 8);
|
||
|
|
#elif (BPP == 16)
|
||
|
|
*((WORD *)pPix) = (WORD)color2;
|
||
|
|
#elif (BPP == 24)
|
||
|
|
*pPix = (BYTE)color2;
|
||
|
|
*(pPix + 1) = (BYTE)(color2 >> 8);
|
||
|
|
*(pPix + 2) = (BYTE)(color2 >> 16);
|
||
|
|
#else
|
||
|
|
*((DWORD *)pPix) = color2;
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
pPix += (BPP / 8);
|
||
|
|
if (--count <= 0)
|
||
|
|
break;
|
||
|
|
|
||
|
|
zbuf+=4;
|
||
|
|
zAccum += zDelta;
|
||
|
|
if ( zAccum <= *((GLuint*)zbuf) ) {
|
||
|
|
*((GLuint*)zbuf) = zAccum;
|
||
|
|
|
||
|
|
#if (BPP == 8)
|
||
|
|
*pPix = (BYTE)(color1 >> 16);
|
||
|
|
#elif (BPP == 16)
|
||
|
|
*((WORD *)pPix) = (WORD)color3;
|
||
|
|
#elif (BPP == 24)
|
||
|
|
*pPix = (BYTE)color3;
|
||
|
|
*(pPix + 1) = (BYTE)(color3 >> 8);
|
||
|
|
*(pPix + 2) = (BYTE)(color3 >> 16);
|
||
|
|
#else
|
||
|
|
*((DWORD *)pPix) = color3;
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
pPix += (BPP / 8);
|
||
|
|
if (--count <= 0)
|
||
|
|
break;
|
||
|
|
|
||
|
|
zbuf+=4;
|
||
|
|
zAccum += zDelta;
|
||
|
|
if ( zAccum <= *((GLuint*)zbuf) ) {
|
||
|
|
*((GLuint*)zbuf) = zAccum;
|
||
|
|
|
||
|
|
#if (BPP == 8)
|
||
|
|
*pPix = (BYTE)(color1 >> 24);
|
||
|
|
#elif (BPP == 16)
|
||
|
|
*((WORD *)pPix) = (WORD)color4;
|
||
|
|
#elif (BPP == 24)
|
||
|
|
*pPix = (BYTE)color4;
|
||
|
|
*(pPix + 1) = (BYTE)(color4 >> 8);
|
||
|
|
*(pPix + 2) = (BYTE)(color4 >> 16);
|
||
|
|
#else
|
||
|
|
*((DWORD *)pPix) = color4;
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
pPix += (BPP / 8);
|
||
|
|
if (--count <= 0)
|
||
|
|
break;
|
||
|
|
zAccum += zDelta;
|
||
|
|
zbuf+=4;
|
||
|
|
}
|
||
|
|
#else //!DITHER
|
||
|
|
for (; count; count--) {
|
||
|
|
if ( zAccum <= *((GLuint*)zbuf) ) {
|
||
|
|
*((GLuint*)zbuf) = zAccum;
|
||
|
|
|
||
|
|
#if (BPP == 8)
|
||
|
|
*pPix = (BYTE)color1;
|
||
|
|
#elif (BPP == 16)
|
||
|
|
*((WORD *)pPix) = (WORD)color1;
|
||
|
|
#elif (BPP == 24)
|
||
|
|
*pPix = (BYTE)color1;
|
||
|
|
*(pPix + 1) = (BYTE)color2;
|
||
|
|
*(pPix + 2) = (BYTE)color3;
|
||
|
|
#else
|
||
|
|
*((DWORD *)pPix) = color1;
|
||
|
|
#endif //BPP
|
||
|
|
}
|
||
|
|
zbuf+=4;
|
||
|
|
zAccum += zDelta;
|
||
|
|
pPix += (BPP / 8);
|
||
|
|
}
|
||
|
|
#endif //!DITHER
|
||
|
|
}
|
||
|
|
} else { // !FASTZBUFFER
|
||
|
|
LONG totalCount;
|
||
|
|
ULONG *pMask = gengc->gc.polygon.shader.stipplePat;
|
||
|
|
|
||
|
|
for (totalCount = gengc->gc.polygon.shader.length; totalCount > 0; totalCount -= 32) {
|
||
|
|
ULONG mask;
|
||
|
|
ULONG maskTest;
|
||
|
|
|
||
|
|
if ((mask = *pMask++) == 0) {
|
||
|
|
pPix += (32 * (BPP / 8));
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
maskTest = 0x80000000;
|
||
|
|
|
||
|
|
if ((count = totalCount) > 32)
|
||
|
|
count = 32;
|
||
|
|
|
||
|
|
#if DITHER
|
||
|
|
for (;;) {
|
||
|
|
if (mask & maskTest) {
|
||
|
|
#if (BPP == 8)
|
||
|
|
*pPix = (BYTE)color1;
|
||
|
|
#elif (BPP == 16)
|
||
|
|
*((WORD *)pPix) = (WORD)color1;
|
||
|
|
#elif (BPP == 24)
|
||
|
|
*pPix = (BYTE)color1;
|
||
|
|
*(pPix + 1) = (BYTE)(color1 >> 8);
|
||
|
|
*(pPix + 2) = (BYTE)(color1 >> 16);
|
||
|
|
#else
|
||
|
|
*((DWORD *)pPix) = color1;
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
pPix += (BPP / 8);
|
||
|
|
if (--count <= 0)
|
||
|
|
break;
|
||
|
|
|
||
|
|
maskTest >>= 1;
|
||
|
|
if (mask & maskTest) {
|
||
|
|
#if (BPP == 8)
|
||
|
|
*pPix = (BYTE)(color1 >> 8);
|
||
|
|
#elif (BPP == 16)
|
||
|
|
*((WORD *)pPix) = (WORD)color2;
|
||
|
|
#elif (BPP == 24)
|
||
|
|
*pPix = (BYTE)color2;
|
||
|
|
*(pPix + 1) = (BYTE)(color2 >> 8);
|
||
|
|
*(pPix + 2) = (BYTE)(color2 >> 16);
|
||
|
|
#else
|
||
|
|
*((DWORD *)pPix) = color2;
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
pPix += (BPP / 8);
|
||
|
|
if (--count <= 0)
|
||
|
|
break;
|
||
|
|
|
||
|
|
maskTest >>= 1;
|
||
|
|
if (mask & maskTest) {
|
||
|
|
#if (BPP == 8)
|
||
|
|
*pPix = (BYTE)(color1 >> 16);
|
||
|
|
#elif (BPP == 16)
|
||
|
|
*((WORD *)pPix) = (WORD)color3;
|
||
|
|
#elif (BPP == 24)
|
||
|
|
*pPix = (BYTE)color3;
|
||
|
|
*(pPix + 1) = (BYTE)(color3 >> 8);
|
||
|
|
*(pPix + 2) = (BYTE)(color3 >> 16);
|
||
|
|
#else
|
||
|
|
*((DWORD *)pPix) = color3;
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
pPix += (BPP / 8);
|
||
|
|
if (--count <= 0)
|
||
|
|
break;
|
||
|
|
|
||
|
|
maskTest >>= 1;
|
||
|
|
if (mask & maskTest) {
|
||
|
|
#if (BPP == 8)
|
||
|
|
*pPix = (BYTE)(color1 >> 24);
|
||
|
|
#elif (BPP == 16)
|
||
|
|
*((WORD *)pPix) = (WORD)color4;
|
||
|
|
#elif (BPP == 24)
|
||
|
|
*pPix = (BYTE)color4;
|
||
|
|
*(pPix + 1) = (BYTE)(color4 >> 8);
|
||
|
|
*(pPix + 2) = (BYTE)(color4 >> 16);
|
||
|
|
#else
|
||
|
|
*((DWORD *)pPix) = color4;
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
pPix += (BPP / 8);
|
||
|
|
if (--count <= 0)
|
||
|
|
break;
|
||
|
|
#if ZBUFFER
|
||
|
|
maskTest >>= 1;
|
||
|
|
#else
|
||
|
|
zAccum += zDelta;
|
||
|
|
zbuf++;
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
#else //!DITHER
|
||
|
|
#if (BPP == 8)
|
||
|
|
if (mask == 0xffffffff) {
|
||
|
|
RtlFillMemory(pPix, count, color1);
|
||
|
|
pPix += (32 * (BPP / 8));
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
#elif (BPP == 16)
|
||
|
|
if (mask == 0xffffffff) {
|
||
|
|
LONG ddCount;
|
||
|
|
|
||
|
|
if ((ULONG_PTR)pPix & 0x2) { // get odd-start pixel
|
||
|
|
*((WORD *)pPix)++ = (WORD)color1;
|
||
|
|
if (--count <= 0)
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (ddCount = (count & (~1)) << 1) { // fill DWORDs
|
||
|
|
RtlFillMemoryUlong(pPix, ddCount, color1);
|
||
|
|
pPix += ddCount;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (count & 1) // get odd-end pixel
|
||
|
|
*((WORD *)pPix)++ = (WORD)color1;
|
||
|
|
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
#elif (BPP == 24)
|
||
|
|
if (mask == 0xffffffff) {
|
||
|
|
ULONG colorShr = color1 >> 8;
|
||
|
|
LONG i;
|
||
|
|
|
||
|
|
for (i = 0; i < count; i++, pPix += 3) {
|
||
|
|
*pPix = (BYTE)color1;
|
||
|
|
*(pPix + 1) = (BYTE)color2;
|
||
|
|
*(pPix + 2) = (BYTE)color3;
|
||
|
|
}
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
#elif (BPP == 32)
|
||
|
|
if (mask == 0xffffffff) {
|
||
|
|
RtlFillMemoryUlong(pPix, count << 2, color1);
|
||
|
|
pPix += (32 * (BPP / 8));
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
#endif //BPP
|
||
|
|
|
||
|
|
for (; count; count--) {
|
||
|
|
if (mask & maskTest) {
|
||
|
|
#if (BPP == 8)
|
||
|
|
*pPix = (BYTE)color1;
|
||
|
|
#elif (BPP == 16)
|
||
|
|
*((WORD *)pPix) = (WORD)color1;
|
||
|
|
#elif (BPP == 24)
|
||
|
|
*pPix = (BYTE)color1;
|
||
|
|
*(pPix + 1) = (BYTE)color2;
|
||
|
|
*(pPix + 2) = (BYTE)color3;
|
||
|
|
#else
|
||
|
|
*((DWORD *)pPix) = color1;
|
||
|
|
#endif //BPP
|
||
|
|
}
|
||
|
|
maskTest >>= 1;
|
||
|
|
pPix += (BPP / 8);
|
||
|
|
}
|
||
|
|
#endif //!DITHER
|
||
|
|
}
|
||
|
|
}
|
||
|
|
#else // !ZBUFFER
|
||
|
|
{
|
||
|
|
LONG totalCount = gengc->gc.polygon.shader.length;
|
||
|
|
#if DITHER
|
||
|
|
#if (BPP == 8)
|
||
|
|
LONG i;
|
||
|
|
|
||
|
|
if (totalCount < 7) {
|
||
|
|
*pPix++ = (BYTE)color1;
|
||
|
|
if (--totalCount <= 0)
|
||
|
|
return;
|
||
|
|
*pPix++ = (BYTE)(color1 >> 8);
|
||
|
|
if (--totalCount <= 0)
|
||
|
|
return;
|
||
|
|
*pPix++ = (BYTE)(color1 >> 16);
|
||
|
|
if (--totalCount <= 0)
|
||
|
|
return;
|
||
|
|
*pPix++ = (BYTE)(color1 >> 24);
|
||
|
|
if (--totalCount <= 0)
|
||
|
|
return;
|
||
|
|
*pPix++ = (BYTE)color1;
|
||
|
|
if (--totalCount <= 0)
|
||
|
|
return;
|
||
|
|
*pPix = (BYTE)(color1 >> 8);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (i = (LONG)((ULONG_PTR)pPix & 0x3)) {
|
||
|
|
i = ditherShift = (4 - i);
|
||
|
|
|
||
|
|
totalCount -= i;
|
||
|
|
|
||
|
|
if (i--) {
|
||
|
|
*pPix++ = (BYTE)color1;
|
||
|
|
if (i--) {
|
||
|
|
*pPix++ = (BYTE)(color1 >> 8);
|
||
|
|
if (i--) {
|
||
|
|
*pPix++ = (BYTE)(color1 >> 16);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// re-align the dither colors for DWORD boundaries
|
||
|
|
|
||
|
|
ditherShift <<= 3;
|
||
|
|
|
||
|
|
color1 = (color1 >> ditherShift) |
|
||
|
|
(color1 << (32 - ditherShift));
|
||
|
|
}
|
||
|
|
|
||
|
|
RtlFillMemoryUlong(pPix, totalCount, color1);
|
||
|
|
pPix += (totalCount & 0xfffffffc);
|
||
|
|
|
||
|
|
i = totalCount & 0x3;
|
||
|
|
|
||
|
|
if (i--) {
|
||
|
|
*pPix++ = (BYTE)color1;
|
||
|
|
if (i--) {
|
||
|
|
*pPix++ = (BYTE)(color1 >> 8);
|
||
|
|
if (i--) {
|
||
|
|
*pPix++ = (BYTE)(color1 >> 16);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return;
|
||
|
|
|
||
|
|
#elif (BPP == 16)
|
||
|
|
ULONG colorA, colorB;
|
||
|
|
LONG i;
|
||
|
|
|
||
|
|
if (totalCount < 3) {
|
||
|
|
*((WORD *)pPix)++ = (WORD)color1;
|
||
|
|
if (--totalCount <= 0)
|
||
|
|
return;
|
||
|
|
*((WORD *)pPix)++ = (WORD)color2;
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ((ULONG_PTR)pPix & 0x2) {
|
||
|
|
totalCount--;
|
||
|
|
|
||
|
|
*((WORD *)pPix)++ = (WORD)color1;
|
||
|
|
|
||
|
|
colorA = color2 | (color3 << 16);
|
||
|
|
colorB = color4 | (color1 << 16);
|
||
|
|
} else {
|
||
|
|
colorA = color1 | (color2 << 16);
|
||
|
|
colorB = color3 | (color4 << 16);
|
||
|
|
}
|
||
|
|
|
||
|
|
for (i = (totalCount >> 1);;) {
|
||
|
|
*((DWORD *)pPix)++ = colorA;
|
||
|
|
if (--i <= 0) {
|
||
|
|
if (totalCount & 1)
|
||
|
|
*((WORD *)pPix) = (WORD)colorB;
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
*((DWORD *)pPix)++ = colorB;
|
||
|
|
if (--i <= 0) {
|
||
|
|
if (totalCount & 1)
|
||
|
|
*((WORD *)pPix) = (WORD)colorA;
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#elif (BPP == 24)
|
||
|
|
for (;;pPix += 12) {
|
||
|
|
*pPix = (BYTE)color1;
|
||
|
|
*(pPix + 1) = (BYTE)(color1 >> 8);
|
||
|
|
*(pPix + 2) = (BYTE)(color1 >> 16);
|
||
|
|
if (--totalCount <= 0)
|
||
|
|
return;
|
||
|
|
*(pPix + 3) = (BYTE)color2;
|
||
|
|
*(pPix + 4) = (BYTE)(color2 >> 8);
|
||
|
|
*(pPix + 5) = (BYTE)(color2 >> 16);
|
||
|
|
if (--totalCount <= 0)
|
||
|
|
return;
|
||
|
|
*(pPix + 6) = (BYTE)color3;
|
||
|
|
*(pPix + 7) = (BYTE)(color3 >> 8);
|
||
|
|
*(pPix + 8) = (BYTE)(color3 >> 16);
|
||
|
|
if (--totalCount <= 0)
|
||
|
|
return;
|
||
|
|
*(pPix + 9) = (BYTE)color4;
|
||
|
|
*(pPix + 10) = (BYTE)(color4 >> 8);
|
||
|
|
*(pPix + 11) = (BYTE)(color4 >> 16);
|
||
|
|
if (--totalCount <= 0)
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
#elif (BPP == 32)
|
||
|
|
for (;;pPix += 16) {
|
||
|
|
*((DWORD *)pPix) = color1;
|
||
|
|
if (--totalCount <= 0)
|
||
|
|
return;
|
||
|
|
*((DWORD *)(pPix + 4)) = color2;
|
||
|
|
if (--totalCount <= 0)
|
||
|
|
return;
|
||
|
|
*((DWORD *)(pPix + 8)) = color3;
|
||
|
|
if (--totalCount <= 0)
|
||
|
|
return;
|
||
|
|
*((DWORD *)(pPix + 12)) = color4;
|
||
|
|
if (--totalCount <= 0)
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
#endif //BPP
|
||
|
|
#else //!DITHER
|
||
|
|
#if (BPP == 8)
|
||
|
|
RtlFillMemory(pPix, totalCount, color1);
|
||
|
|
return;
|
||
|
|
#elif (BPP == 16)
|
||
|
|
if ((ULONG_PTR)pPix & 0x2) { // get odd-start pixel
|
||
|
|
*((WORD *)pPix)++ = (WORD)color1;
|
||
|
|
if (--totalCount <= 0)
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
if (count = (totalCount & (~1)) << 1)
|
||
|
|
RtlFillMemoryUlong(pPix, count, color1);
|
||
|
|
if (totalCount & 1) // get odd-end pixel
|
||
|
|
*((WORD *)(pPix + count)) = (WORD)color1;
|
||
|
|
return;
|
||
|
|
#elif (BPP == 24)
|
||
|
|
LONG i;
|
||
|
|
|
||
|
|
for (i = 0; i < totalCount; i++, pPix += 3) {
|
||
|
|
*pPix = (BYTE)color1;
|
||
|
|
*(pPix + 1) = (BYTE)(color2);
|
||
|
|
*(pPix + 2) = (BYTE)(color3);
|
||
|
|
}
|
||
|
|
return;
|
||
|
|
#elif (BPP == 32)
|
||
|
|
RtlFillMemoryUlong(pPix, totalCount << 2, color1);
|
||
|
|
return;
|
||
|
|
#endif //BPP
|
||
|
|
#endif //!DITHER
|
||
|
|
}
|
||
|
|
#endif // !ZBUFFER
|
||
|
|
}
|