158 lines
4.5 KiB
C
158 lines
4.5 KiB
C
/******************************Module*Header*******************************\
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* Module Name: mcdpoint.c
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*
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* Contains the point-rendering routines for the Millenium MCD driver.
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*
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* Copyright (c) 1996 Microsoft Corporation
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\**************************************************************************/
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#include "precomp.h"
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#include "mcdhw.h"
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#include "mcdutil.h"
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#include "mcdmath.h"
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#define TRUNCCOORD(value, intValue)\
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intValue = __MCD_VERTEX_FIXED_TO_INT(__MCD_VERTEX_FLOAT_TO_FIXED(value))
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VOID FASTCALL __MCDPointBegin(DEVRC *pRc)
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{
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BYTE *pjBase = ((PDEV *)pRc->ppdev)->pjBase;
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if ((pRc->pEnumClip->c) <= 1) {
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CHECK_FIFO_FREE(pjBase, pRc->cFifo, 1);
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CP_WRITE(pjBase, DWG_DWGCTL, pRc->hwLineFunc);
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} else {
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CHECK_FIFO_FREE(pjBase, pRc->cFifo, 9);
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CP_WRITE(pjBase, DWG_DWGCTL, pRc->hwLineFunc);
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// ?? Theoretically just need to clear y deltas, not both:
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CP_WRITE(pjBase, DWG_DR6, 0);
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CP_WRITE(pjBase, DWG_DR7, 0);
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CP_WRITE(pjBase, DWG_DR10, 0);
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CP_WRITE(pjBase, DWG_DR11, 0);
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CP_WRITE(pjBase, DWG_DR14, 0);
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CP_WRITE(pjBase, DWG_DR15, 0);
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CP_WRITE(pjBase, DWG_DR2, 0);
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CP_WRITE(pjBase, DWG_DR3, 0);
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}
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}
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VOID FASTCALL __MCDRenderPoint(DEVRC *pRc, MCDVERTEX *a)
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{
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PDEV *ppdev = pRc->ppdev;
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BYTE *pjBase = ppdev->pjBase;
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LONG ix, iy;
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LONG iRStart, iGStart, iBStart;
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LARGE_INTEGER iZStart;
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ULONG clipNum;
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RECTL *pClip;
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MCDCOLOR *ac;
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if ((clipNum = pRc->pEnumClip->c) > 1) {
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pClip = &pRc->pEnumClip->arcl[0];
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(*pRc->HWSetupClipRect)(pRc, pClip++);
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}
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if (pRc->privateEnables & __MCDENABLE_Z) {
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#if _X86_ && ASM_ACCEL
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_asm {
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mov ecx, a
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mov edx, pRc
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lea eax, [OFFSET(MCDVERTEX.colors) + ecx]
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fld DWORD PTR [OFFSET(DEVRC.rScale)][edx]
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fmul DWORD PTR [OFFSET(MCDCOLOR.r)][eax]
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fld DWORD PTR [OFFSET(DEVRC.gScale)][edx]
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fmul DWORD PTR [OFFSET(MCDCOLOR.g)][eax]
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fld DWORD PTR [OFFSET(DEVRC.bScale)][edx]
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fmul DWORD PTR [OFFSET(MCDCOLOR.b)][eax]
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fld DWORD PTR [OFFSET(MCDVERTEX.windowCoord.z)][ecx]
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fmul DWORD PTR [OFFSET(DEVRC.zScale)][edx] // z b g r
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fxch ST(3) // r b g z
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fistp iRStart
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fistp iBStart
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fistp iGStart
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fistp iZStart
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}
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#else
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ac = &a->colors[0];
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iRStart = FTOL(ac->r * pRc->rScale);
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iGStart = FTOL(ac->g * pRc->gScale);
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iBStart = FTOL(ac->b * pRc->bScale);
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iZStart.LowPart = FTOL(a->windowCoord.z * pRc->zScale);
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#endif
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CHECK_FIFO_FREE(pjBase, pRc->cFifo, 6);
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CP_WRITE(pjBase, DWG_DR0, iZStart.LowPart);
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} else {
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#if _X86_ && ASM_ACCEL
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_asm{
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mov eax, a
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mov edx, pRc
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lea eax, [OFFSET(MCDVERTEX.colors) + eax]
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fld DWORD PTr [OFFSET(DEVRC.rScale)][edx]
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fmul DWORD PTR [OFFSET(MCDCOLOR.r)][eax]
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fld DWORD PTr [OFFSET(DEVRC.gScale)][edx]
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fmul DWORD PTR [OFFSET(MCDCOLOR.g)][eax]
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fld DWORD PTr [OFFSET(DEVRC.bScale)][edx] // b g r
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fmul DWORD PTR [OFFSET(MCDCOLOR.b)][eax]
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fxch ST(2) // r g b
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fistp iRStart
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fistp iGStart
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fistp iBStart
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}
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#else
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ac = &a->colors[0];
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iRStart = FTOL(ac->r * pRc->rScale);
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iGStart = FTOL(ac->g * pRc->gScale);
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iBStart = FTOL(ac->b * pRc->bScale);
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#endif
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CHECK_FIFO_FREE(pjBase, pRc->cFifo, 5);
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}
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TRUNCCOORD(a->windowCoord.x, ix);
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TRUNCCOORD(a->windowCoord.y, iy);
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CP_WRITE(pjBase, DWG_XDST, (ix + pRc->xOffset) & 0xffff);
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CP_WRITE(pjBase, DWG_YDSTLEN, ((iy + pRc->yOffset) << 16) + 1);
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CP_WRITE(pjBase, DWG_DR4, iRStart);
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CP_WRITE(pjBase, DWG_DR8, iGStart);
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CP_START(pjBase, DWG_DR12, iBStart);
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while (--clipNum) {
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(*pRc->HWSetupClipRect)(pRc, pClip++);
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CHECK_FIFO_FREE(pjBase, pRc->cFifo, 2);
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CP_WRITE(pjBase, DWG_XDST, (ix + pRc->xOffset) & 0xffff);
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CP_START(pjBase, DWG_YDSTLEN, ((iy + pRc->yOffset) << 16) + 1);
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}
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}
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VOID FASTCALL __MCDRenderGenPoint(DEVRC *pRc, MCDVERTEX *pv)
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{
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MCDBG_PRINT("__MCDRenderGenPoint");
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}
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VOID FASTCALL __MCDRenderFogPoint(DEVRC *pRc, MCDVERTEX *pv)
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{
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MCDCOLOR c;
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c = pv->colors[0];
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__MCDCalcFogColor(pRc, pv, &pv->colors[0], &c);
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(*pRc->renderPointX)(pRc, pv);
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pv->colors[0] = c;
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}
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