360 lines
12 KiB
C
360 lines
12 KiB
C
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/******************************Module*Header*******************************\
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* Module Name: mcdhw.h
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*
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* Driver-specific structures and defines 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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#if DBG
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#define FASTCALL
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#else
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#ifdef _X86_
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#define FASTCALL __fastcall
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#else
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#define FASTCALL
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#endif
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#endif
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#define ASM_ACCEL 1 // Enable/disable asm code
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#define __MCD_USER_CLIP_MASK ((1 << MCD_MAX_USER_CLIP_PLANES) - 1)
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#define __MCD_CW 0
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#define __MCD_CCW 1
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#define __MCD_FRONTFACE MCDVERTEX_FRONTFACE
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#define __MCD_BACKFACE MCDVERTEX_BACKFACE
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#define __MCD_NOFACE -1
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#define __MCDENABLE_TWOSIDED 0x0001
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#define __MCDENABLE_Z 0x0002
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#define __MCDENABLE_SMOOTH 0x0004
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#define __MCDENABLE_GRAY_FOG 0x0008
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typedef LONG MCDFIXED;
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typedef struct _RGBACOLOR {
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MCDFIXED r, g, b, a;
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} RGBACOLOR;
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#define SWAP_COLOR(p)\
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{\
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MCDFLOAT tempR, tempG, tempB;\
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\
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tempR = (p)->colors[0].r;\
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(p)->colors[0].r = (p)->colors[1].r;\
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(p)->colors[1].r = tempR;\
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\
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tempG = (p)->colors[0].g;\
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(p)->colors[0].g = (p)->colors[1].g;\
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(p)->colors[1].g = tempG;\
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\
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tempB = (p)->colors[0].b;\
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(p)->colors[0].b = (p)->colors[1].b;\
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(p)->colors[1].b = tempB;\
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}
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#define SAVE_COLOR(temp, p)\
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{\
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temp.r = (p)->colors[0].r;\
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temp.g = (p)->colors[0].g;\
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temp.b = (p)->colors[0].b;\
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}
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#define RESTORE_COLOR(temp, p)\
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{\
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(p)->colors[0].r = temp.r;\
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(p)->colors[0].g = temp.g;\
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(p)->colors[0].b = temp.b;\
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}
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#define COPY_COLOR(pDst, pSrc)\
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{\
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pDst.r = pSrc.r;\
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pDst.g = pSrc.g;\
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pDst.b = pSrc.b;\
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}
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#define MCDCLAMPCOUNT(value) ((ULONG)(value) & 0x00007fff)
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#define MCDFIXEDRGB(fixColor, fltColor)\
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fixColor.r = (MCDFIXED)(fltColor.r * pRc->rScale);\
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fixColor.g = (MCDFIXED)(fltColor.g * pRc->gScale);\
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fixColor.b = (MCDFIXED)(fltColor.b * pRc->bScale);
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typedef struct _DRVPIXELFORMAT {
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UCHAR cColorBits;
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UCHAR rBits;
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UCHAR gBits;
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UCHAR bBits;
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UCHAR aBits;
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UCHAR rShift;
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UCHAR gShift;
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UCHAR bShift;
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UCHAR aShift;
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} DRVPIXELFORMAT;
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typedef struct _DEVWND {
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ULONG createFlags; // (RC) creation flags
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LONG iPixelFormat; // pixel format ID for this window
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ULONG dispUnique; // display resolution uniqueness
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ULONG frontBufferPitch; // pitch in bytes
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ULONG allocatedBufferHeight; // Same for back and z on Millenium
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BOOL bValidBackBuffer; // back buffer validity
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ULONG backBufferBase; // byte offset to start of back buffer pool
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ULONG backBufferBaseY; // y value for start of back buffer pool
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ULONG backBufferOffset; // byte offset to start of back buffer
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ULONG backBufferY; // y value for start of active back buffer
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ULONG backBufferPitch; // back buffer pitch in bytes
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BOOL bValidZBuffer; // z buffer validity
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ULONG zBufferBase; // byte offset to start of z buffer pool
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ULONG zBufferBaseY; // y value for start of z buffer pool
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ULONG zBufferOffset; // byte offset to start of z buffer
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ULONG zPitch; // z buffer pitch in bytes
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ULONG numPadScans; // number of pad scan lines in buffers
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OH* pohBackBuffer; // ofscreen pools
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OH* pohZBuffer;
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} DEVWND;
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typedef struct _DEVRC DEVRC;
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typedef struct _DEVRC
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{
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MCDRENDERSTATE MCDState;
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MCDVIEWPORT MCDViewport;
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MCDSURFACE *pMCDSurface; // Valid for primitives only
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MCDRC *pMCDRc; // Valid for primitives only
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PDEV* ppdev; // Valid for primitives only
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ENUMRECTS *pEnumClip; // Valid for primitives only
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MCDVERTEX *pvProvoking; // provoking vertex
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UCHAR *pMemMax; // command-buffer memory bounds
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UCHAR *pMemMin;
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LONG iPixelFormat; // valid pixel format ID for this RC
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// storage and pointers for clip processing:
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MCDVERTEX clipTemp[6 + MCD_MAX_USER_CLIP_PLANES];
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MCDVERTEX *pNextClipTemp;
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VOID (FASTCALL *lineClipParam)(MCDVERTEX*, const MCDVERTEX*, const MCDVERTEX*, MCDFLOAT);
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VOID (FASTCALL *polyClipParam)(MCDVERTEX*, const MCDVERTEX*, const MCDVERTEX*, MCDFLOAT);
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// Rendering functions:
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VOID (FASTCALL *renderPoint)(DEVRC *pRc, MCDVERTEX *pv);
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VOID (FASTCALL *renderLine)(DEVRC *pRc, MCDVERTEX *pv1, MCDVERTEX *pv2, BOOL resetLine);
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VOID (FASTCALL *renderTri)(DEVRC *pRc, MCDVERTEX *pv1, MCDVERTEX *pv2, MCDVERTEX *pv3);
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VOID (FASTCALL *clipLine)(DEVRC *pRc, MCDVERTEX *pv1, MCDVERTEX *pv2, BOOL bResetLine);
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VOID (FASTCALL *clipTri)(DEVRC *pRc, MCDVERTEX *pv1, MCDVERTEX *pv2, MCDVERTEX *pv3, ULONG clipFlags);
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VOID (FASTCALL *clipPoly)(DEVRC *pRc, MCDVERTEX *pv, ULONG numVert);
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VOID (FASTCALL *doClippedPoly)(DEVRC *pRc, MCDVERTEX **pv, ULONG numVert, ULONG clipFlags);
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VOID (FASTCALL *renderPointX)(DEVRC *pRc, MCDVERTEX *pv);
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VOID (FASTCALL *renderLineX)(DEVRC *pRc, MCDVERTEX *pv1, MCDVERTEX *pv2, BOOL resetLine);
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VOID (FASTCALL *renderTriX)(DEVRC *pRc, MCDVERTEX *pv1, MCDVERTEX *pv2, MCDVERTEX *pv3);
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// Primitive-rendering function table:
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MCDCOMMAND * (FASTCALL *primFunc[10])(DEVRC *pRc, MCDCOMMAND *pCommand);
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// Internal table of rendering functions:
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VOID (FASTCALL *drawPoint)(DEVRC *pRc, MCDVERTEX *pv);
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VOID (FASTCALL *drawLine)(DEVRC *pRc, MCDVERTEX *pv1, MCDVERTEX *pv2, BOOL resetLine);
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VOID (FASTCALL *drawTri)(DEVRC *pRc, MCDVERTEX *pv1, MCDVERTEX *pv2, MCDVERTEX *pv3, BOOL bCCW);
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// Rendering helper functions:
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VOID (FASTCALL *HWSetupClipRect)(DEVRC *pRc, RECTL *pRect);
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VOID (FASTCALL *HWDrawTrap)(DEVRC *pRc, MCDFLOAT dxLeft, MCDFLOAT dxRight,
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LONG y, LONG dy);
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VOID (FASTCALL *HWSetupDeltas)(DEVRC *pRc);
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VOID (FASTCALL *beginLineDrawing)(DEVRC *pRc);
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VOID (FASTCALL *endLineDrawing)(DEVRC *pRc);
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VOID (FASTCALL *beginPointDrawing)(DEVRC *pRc);
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VOID (FASTCALL *calcDeltas)(DEVRC *pRc, MCDVERTEX *a, MCDVERTEX *b,
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MCDVERTEX *c);
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VOID (FASTCALL *adjustLeftEdge)(DEVRC *pRc, MCDVERTEX *p, MCDFLOAT dxLeft,
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MCDFLOAT dyLeft, MCDFLOAT xFrac, MCDFLOAT yFrac, MCDFLOAT xErr);
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VOID (FASTCALL *adjustRightEdge)(DEVRC *pRc, MCDVERTEX *p, MCDFLOAT dxRight,
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MCDFLOAT dyRight, MCDFLOAT xErr);
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BOOL bCheapFog;
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BOOL allPrimFail; // TRUE is the driver can't draw *any*
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// primitives for current state
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BOOL pickNeeded;
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BOOL resetLineStipple;
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RGBACOLOR fillColor;
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ULONG polygonFace[2]; // front/back face tables
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ULONG polygonMode[2];
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// Polygon-filling parameters and state:
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MCDFLOAT halfArea;
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MCDFLOAT invHalfArea;
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MCDFLOAT dxAC;
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MCDFLOAT dxAB;
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MCDFLOAT dxBC;
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MCDFLOAT dyAC;
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MCDFLOAT dyAB;
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MCDFLOAT dyBC;
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LONG cullFlag;
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MCDFLOAT drdx, drdy; // delta values
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MCDFLOAT dgdx, dgdy;
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MCDFLOAT dbdx, dbdy;
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MCDFLOAT dzdx, dzdy;
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MCDFIXED fxdrdx, fxdrdy; // fixed-point delta values
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MCDFIXED fxdgdx, fxdgdy;
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MCDFIXED fxdbdx, fxdbdy;
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MCDFIXED fxdzdx, fxdzdy;
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MCDFIXED rStart;
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MCDFIXED gStart;
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MCDFIXED bStart;
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ULONG ixLeft;
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ULONG ixRight;
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ULONG xOffset, yOffset;
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LONG viewportXAdjust;
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LONG viewportYAdjust;
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// Hardware-specific state and other information. Modifications will
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// not affect high-level code:
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LONG cFifo;
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BOOL bRGBMode;
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BOOL zBufEnabled;
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BOOL backBufEnabled;
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ULONG hwPlaneMask;
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ULONG hwZFunc;
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ULONG hwRop;
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ULONG ulAccess;
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ULONG hwStipple;
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ULONG hwLineFunc;
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ULONG hwIntLineFunc;
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ULONG hwTrapFunc;
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ULONG hwSpanFunc;
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ULONG hwSolidColor;
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ULONG hwPatternLength;
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ULONG hwPatternStart;
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ULONG hwPatternPos;
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ULONG hwBpp;
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LONG hwBufferYBias; // bias to convert window to buffer coord
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ULONG hwYOrgBias; // bias to convert window to 0-relative coord
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ULONG privateEnables;
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MCDFLOAT rScale;
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MCDFLOAT gScale;
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MCDFLOAT bScale;
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MCDFLOAT aScale;
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MCDFLOAT zScale;
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// shifts for converting to native bit depth
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ULONG rShift;
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ULONG gShift;
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ULONG bShift;
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ULONG aShift;
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// shifts for converting to hardware format
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ULONG hwRShift;
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ULONG hwGShift;
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ULONG hwBShift;
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ULONG hwAShift;
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// Not used in this driver, but good information to have around:
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ULONG hwZPitch;
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ULONG hwZBytesPerPixel;
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ULONG hwCPitch;
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ULONG hwCBytesPerPixel;
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MCDFLOAT zero;
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DRVPIXELFORMAT pixelFormat;
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} DEVRC;
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// External declarations
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MCDCOMMAND * FASTCALL __MCDPrimDrawPoints(DEVRC *pRc, MCDCOMMAND *pCmd);
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MCDCOMMAND * FASTCALL __MCDPrimDrawLines(DEVRC *pRc, MCDCOMMAND *pCmd);
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MCDCOMMAND * FASTCALL __MCDPrimDrawLineLoop(DEVRC *pRc, MCDCOMMAND *pCmd);
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MCDCOMMAND * FASTCALL __MCDPrimDrawLineStrip(DEVRC *pRc, MCDCOMMAND *pCmd);
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MCDCOMMAND * FASTCALL __MCDPrimDrawTriangles(DEVRC *pRc, MCDCOMMAND *pCmd);
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MCDCOMMAND * FASTCALL __MCDPrimDrawTriangleStrip(DEVRC *pRc, MCDCOMMAND *pCmd);
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MCDCOMMAND * FASTCALL __MCDPrimDrawTriangleFan(DEVRC *pRc, MCDCOMMAND *pCmd);
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MCDCOMMAND * FASTCALL __MCDPrimDrawQuads(DEVRC *pRc, MCDCOMMAND *pCmd);
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MCDCOMMAND * FASTCALL __MCDPrimDrawQuadStrip(DEVRC *pRc, MCDCOMMAND *pCmd);
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MCDCOMMAND * FASTCALL __MCDPrimDrawPolygon(DEVRC *pRc, MCDCOMMAND *_pCmd);
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// High-level rendering functions:
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VOID __MCDPickRenderingFuncs(DEVRC *pRc, DEVWND *pDevWnd);
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VOID FASTCALL __MCDRenderPoint(DEVRC *pRc, MCDVERTEX *pv);
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VOID FASTCALL __MCDRenderFogPoint(DEVRC *pRc, MCDVERTEX *pv);
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VOID FASTCALL __MCDRenderGenPoint(DEVRC *pRc, MCDVERTEX *pv);
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VOID FASTCALL __MCDRenderFlatLine(DEVRC *pRc, MCDVERTEX *pv1, MCDVERTEX *pv2, BOOL resetLine);
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VOID FASTCALL __MCDRenderFlatFogLine(DEVRC *pRc, MCDVERTEX *pv1, MCDVERTEX *pv2, BOOL resetLine);
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VOID FASTCALL __MCDRenderSmoothLine(DEVRC *pRc, MCDVERTEX *pv1, MCDVERTEX *pv2, BOOL resetLine);
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VOID FASTCALL __MCDRenderGenLine(DEVRC *pRc, MCDVERTEX *pv1, MCDVERTEX *pv2, BOOL resetLine);
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VOID FASTCALL __MCDRenderFlatTriangle(DEVRC *pRc, MCDVERTEX *pv1, MCDVERTEX *pv2, MCDVERTEX *pv3);
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VOID FASTCALL __MCDRenderFlatFogTriangle(DEVRC *pRc, MCDVERTEX *pv1, MCDVERTEX *pv2, MCDVERTEX *pv3);
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VOID FASTCALL __MCDRenderSmoothTriangle(DEVRC *pRc, MCDVERTEX *pv1, MCDVERTEX *pv2, MCDVERTEX *pv3);
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VOID FASTCALL __MCDRenderGenTriangle(DEVRC *pRc, MCDVERTEX *pv1, MCDVERTEX *pv2, MCDVERTEX *pv3);
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// Low-level drawing functions:
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VOID FASTCALL __MCDPointBegin(DEVRC *pRc);
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VOID FASTCALL __MCDLineBegin(DEVRC *pRc);
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VOID FASTCALL __MCDLineEnd(DEVRC *pRc);
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VOID FASTCALL __MCDFillTriangle(DEVRC *pRc, MCDVERTEX *pv1, MCDVERTEX *pv2,
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MCDVERTEX *pv3, BOOL bCCW);
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// Clipping functions:
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VOID FASTCALL __MCDPickClipFuncs(DEVRC *pRc);
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VOID FASTCALL __MCDClipLine(DEVRC *pRc, MCDVERTEX *a, MCDVERTEX *b,
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BOOL bResetLine);
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VOID FASTCALL __MCDClipTriangle(DEVRC *pRc, MCDVERTEX *a, MCDVERTEX *b,
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MCDVERTEX *c, ULONG orClipCode);
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VOID FASTCALL __MCDClipPolygon(DEVRC *pRc, MCDVERTEX *v0, ULONG nv);
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VOID FASTCALL __MCDDoClippedPolygon(DEVRC *pRc, MCDVERTEX **iv, ULONG nout,
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ULONG allClipCodes);
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VOID FASTCALL __HWAdjustLeftEdgeRGBZ(DEVRC *pRc, MCDVERTEX *p,
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MCDFLOAT fdxLeft, MCDFLOAT fdyLeft,
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MCDFLOAT xFrac, MCDFLOAT yFrac,
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MCDFLOAT xErr);
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VOID FASTCALL __HWAdjustRightEdge(DEVRC *pRc, MCDVERTEX *p,
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MCDFLOAT fdxRight, MCDFLOAT fdyRight,
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MCDFLOAT xErr);
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VOID FASTCALL __MCDCalcDeltaRGBZ(DEVRC *pRc, MCDVERTEX *a, MCDVERTEX *b,
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MCDVERTEX *c);
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MCDFLOAT FASTCALL __MCDGetZOffsetDelta(DEVRC *pRc);
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// Fog function
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VOID __MCDCalcFogColor(DEVRC *pRc, MCDVERTEX *a, MCDCOLOR *pResult, MCDCOLOR *pColor);
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