source/gfx/prim.cpp

@@ -0,0 +1,159 @@
+///**********************/
+/*** Psx Prim Stuff ***/
+/**********************/
+
+#include "system\global.h"
+#include "gfx\TPage.h"
+#include "gfx\AnimTex.h"
+#include "gfx\Prim.h"
+#include "system\vid.h"
+
+/*****************************************************************************/
+sOT 		*OtList[2],*OtPtr;
+u32			DmaStart[2];
+u8			*PrimBuffer[2],*PrimListStart,*PrimListEnd;
+u8			*CurrPrim,*EndPrim;
+int			PrimFlipFlag;
+
+/*****************************************************************************/
+void	PrimInit()
+{
+// Alloc Lists
+	OtList[0]=(sOT*)MemAlloc(MAX_OT*2*sizeof(sOT), "-Ot-");
+	OtList[1]=OtList[0]+MAX_OT;
+	PrimBuffer[0]=(u8*)MemAlloc(PRIMPOOL_SIZE*2, "Prim");
+	PrimBuffer[1]=PrimBuffer[0]+(PRIMPOOL_SIZE);
+
+	PrimFlipFlag=0;
+	OtPtr=(sOT*)OtList[PrimFlipFlag];
+	CurrPrim=(u8*)PrimBuffer[PrimFlipFlag];
+	EndPrim=CurrPrim+(PRIMPOOL_SIZE);
+
+	PrimListStart=PrimBuffer[0];
+	PrimListEnd=PrimListStart+(PRIMPOOL_SIZE*2);
+
+	InitOTagR(OtList[0],MAX_OT);
+	InitOTagR(OtList[1],MAX_OT);
+}
+
+
+/*****************************************************************************/
+void	PrimDisplay()
+{
+	CAnimTex::AnimateTex();
+	UnlinkOTagR(OtPtr, MAX_OT, &DmaStart[PrimFlipFlag]);
+
+#ifdef	USE_NTAGS
+	DrawOTag((u32*)&DmaStart[PrimFlipFlag]);
+#else
+	DrawOTag(OtPtr+(MAX_OT-1));
+#endif
+
+	PrimFlipFlag^=1;
+	OtPtr=(sOT*)OtList[PrimFlipFlag];
+	CurrPrim=(u8*)PrimBuffer[PrimFlipFlag];
+	EndPrim=CurrPrim+(PRIMPOOL_SIZE);
+
+	ResetOTagR(OtPtr,MAX_OT);
+
+}
+
+
+/*** Clipping ****************************************************************/
+extern int FrameFlipFlag;
+void	PrimClip(RECT *R, u32 Depth)
+{
+DR_AREA 	*CPtr=(DR_AREA*)CurrPrim;
+RECT 		Real;
+sVidScreen	*Scr=VidGetDrawScreen();
+
+	Real=*R;
+	CurrPrim+=sizeof(DR_AREA);
+	Real.x+=Scr->Draw.clip.x;
+	Real.y+=Scr->Draw.clip.y;
+
+	int xLimit=512;
+	int yLimit=((FrameFlipFlag^1)+1)*256;
+	if(Real.x+Real.w>xLimit)Real.w=xLimit-Real.x;
+	if(Real.y+Real.h>yLimit)Real.h=yLimit-Real.y;
+
+	SetDrawArea(CPtr,&Real);
+	AddPrimToList(CPtr,Depth);
+};
+
+/*---------------------------------------------------------------------------*/
+void PrimFullScreen(int Depth)
+{
+RECT	FullScreenRect={0,0,VidGetScrW(),VidGetScrH()};
+		PrimClip(&FullScreenRect,Depth);
+}
+
+/*****************************************************************************/
+/*** NTag Functions **********************************************************/
+/*****************************************************************************/
+#ifdef	USE_NTAGS
+void 	ClearNTag(sOT *Ptr, long Count)
+{
+   for (; Count; Ptr++,Count--) Ptr->FirstPrim = NULL;
+}
+
+/*****************************************************************************/
+void 	UnlinkNTag(sOT *Ptr, long Count, u32 *StartOt)
+{
+u32 	*Tag;
+		for (; Count; Ptr++,Count--)
+			{
+			if ((Tag = Ptr->FirstPrim) == NULL) continue;
+			setaddr(StartOt, Tag);
+			StartOt = Ptr->LastPrim;
+			Ptr->FirstPrim = NULL;			// Reset while Im at it!
+			}
+		termPrim(StartOt);
+}
+
+/*****************************************************************************/
+void 	UnlinkNTagR(sOT *Ptr, long Count, u32 *StartOt)
+{
+u32 	*Tag;
+		Ptr+=Count-1;
+		for (; Count; Ptr--,Count--)
+			{
+			if ((Tag = Ptr->FirstPrim) == NULL) continue;
+			setaddr(StartOt, Tag);
+			StartOt = Ptr->LastPrim;
+			Ptr->FirstPrim = NULL;			// Reset while Im at it!
+			}
+		termPrim(StartOt);
+}
+
+
+/*****************************************************************************/
+LINE_F2		*DrawLine(int _x0,int _y0,int _x1,int _y1,int _r,int _g,int _b,int _ot)
+{
+	LINE_F2		*lf2=GetPrimLF2();
+	lf2->x0=_x0;
+	lf2->y0=_y0;
+	lf2->x1=_x1;
+	lf2->y1=_y1;
+	setRGB0(lf2,_r,_g,_b);
+	AddPrimToList(lf2,_ot);
+	return lf2;
+}
+
+/*****************************************************************************/
+LINE_G2		*DrawGLine(int _x0,int _y0,int _x1,int _y1,int _r1,int _g1,int _b1,int _r2,int _g2,int _b2,int _ot)
+{
+	LINE_G2		*lg2=GetPrimLG2();
+	lg2->x0=_x0;
+	lg2->y0=_y0;
+	lg2->x1=_x1;
+	lg2->y1=_y1;
+	setRGB0(lg2,_r1,_g1,_b1);
+	setRGB1(lg2,_r2,_g2,_b2);
+	AddPrimToList(lg2,_ot);
+	return lg2;
+}
+
+
+
+#endif