--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/video/cybergfx/SDL_cgxaccel.c	Thu Apr 26 16:45:43 2001 +0000
@@ -0,0 +1,237 @@
+#include "SDL_error.h"
+#include "SDL_endian.h"
+#include "SDL_sysvideo.h"
+#include "SDL_blit.h"
+#include "SDL_video.h"
+#include "SDL_cgxvideo.h"
+
+static int CGX_HWAccelBlit(SDL_Surface *src, SDL_Rect *srcrect,
+					SDL_Surface *dst, SDL_Rect *dstrect);
+
+// These are needed to avoid register troubles with gcc -O2!
+
+#if defined(__SASC) || defined(__PPC__)
+#define BMKBRP(a,b,c,d,e,f,g,h,i,j) BltMaskBitMapRastPort(a,b,c,d,e,f,g,h,i,j)
+#define	BBRP(a,b,c,d,e,f,g,h,i) BltBitMapRastPort(a,b,c,d,e,f,g,h,i)
+#define BBB(a,b,c,d,e,f,g,h,i,j,k) BltBitMap(a,b,c,d,e,f,g,h,i,j,k)
+#else
+void BMKBRP(struct BitMap *a,WORD b, WORD c,struct RastPort *d,WORD e,WORD f,WORD g,WORD h,UBYTE i,APTR j)
+{BltMaskBitMapRastPort(a,b,c,d,e,f,g,h,i,j);}
+
+void BBRP(struct BitMap *a,WORD b, WORD c,struct RastPort *d,WORD e,WORD f,WORD g,WORD h,UBYTE i) 
+{BltBitMapRastPort(a,b,c,d,e,f,g,h,i);}
+
+void BBB(struct BitMap *a,WORD b, WORD c,struct BitMap *d,WORD e,WORD f,WORD g,WORD h,UBYTE i,UBYTE j,UWORD *k) 
+{BltBitMap(a,b,c,d,e,f,g,h,i,j,k);}
+#endif
+
+int CGX_SetHWColorKey(_THIS,SDL_Surface *surface, Uint32 key)
+{
+	if(surface->hwdata)
+	{
+		if(surface->hwdata->mask)
+			free(surface->hwdata->mask);
+
+		if(surface->hwdata->mask=malloc(RASSIZE(surface->w,surface->h)))
+		{
+			Uint32 pitch,ok=0;
+			APTR lock;
+
+			memset(surface->hwdata->mask,255,RASSIZE(surface->w,surface->h));
+
+			D(bug("Costruisco colorkey: colore: %ld, size: %ld x %ld, %ld bytes...Bpp:%ld\n",key,surface->w,surface->h,RASSIZE(surface->w,surface->h),surface->format->BytesPerPixel));
+
+			if(lock=LockBitMapTags(surface->hwdata->bmap,LBMI_BASEADDRESS,(ULONG)&surface->pixels,
+					LBMI_BYTESPERROW,(ULONG)&pitch,TAG_DONE))
+			{
+				switch(surface->format->BytesPerPixel)
+				{
+					case 1:
+					{
+						unsigned char k=key;
+						register int i,j,t;
+						register unsigned char *dest=surface->hwdata->mask,*map=surface->pixels;
+
+						pitch-=surface->w;
+
+						for(i=0;i<surface->h;i++)
+						{
+							for(t=128,j=0;j<surface->w;j++)
+							{
+								if(*map==k)
+									*dest&=~t;	
+
+								t>>=1;
+
+								if(t==0)
+								{
+									dest++;
+									t=128;
+								}
+								map++;
+							}
+							map+=pitch;
+						}
+					}
+					break;
+					case 2:
+					{
+						Uint16 k=key,*mapw;
+						register int i,j,t;
+						register unsigned char *dest=surface->hwdata->mask,*map=surface->pixels;
+
+						for(i=surface->h;i;--i)
+						{
+							mapw=(Uint16 *)map;
+
+							for(t=128,j=surface->w;j;--j)
+							{
+								if(*mapw==k)
+									*dest&=~t;
+
+								t>>=1;
+
+								if(t==0)
+								{
+									dest++;
+									t=128;
+								}
+								mapw++;
+							}
+							map+=pitch;
+						}
+					}
+					break;
+					case 4:
+					{
+						Uint32 *mapl;
+						register int i,j,t;
+						register unsigned char *dest=surface->hwdata->mask,*map=surface->pixels;
+
+						for(i=surface->h;i;--i)
+						{
+							mapl=(Uint32 *)map;
+
+							for(t=128,j=surface->w;j;--j)
+							{
+								if(*mapl==key)
+									*dest&=~t;
+
+								t>>=1;
+
+								if(t==0)
+								{
+									dest++;
+									t=128;
+								}
+								mapl++;
+							}
+							map+=pitch;
+						}
+
+					}
+					break;
+					default:
+						D(bug("Pixel mode non supported for color key..."));
+						free(surface->hwdata->mask);
+						surface->hwdata->mask=NULL;
+						ok=-1;
+				}
+				UnLockBitMap(lock);
+				D(bug("...Colorkey costruito!\n"));
+				return ok;
+			}
+		}
+	}
+	D(bug("HW colorkey not supported for this depth\n"));
+
+	return -1;
+}
+
+int CGX_CheckHWBlit(_THIS,SDL_Surface *src,SDL_Surface *dst)
+{
+// Doesn't support yet alpha blitting
+
+	if(src->hwdata&& !(src->flags & (SDL_SRCALPHA)))
+	{
+		D(bug("CheckHW blit... OK!\n"));
+
+		if ( (src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY ) {
+			if ( CGX_SetHWColorKey(this, src, src->format->colorkey) < 0 ) {
+				src->flags &= ~SDL_HWACCEL;
+				return -1;
+			}
+		}
+
+		src->flags|=SDL_HWACCEL;
+		src->map->hw_blit = CGX_HWAccelBlit;
+		return 1;
+	}
+	else
+		src->flags &= ~SDL_HWACCEL;
+
+	D(bug("CheckHW blit... NO!\n"));
+
+	return 0;
+}
+
+static int temprp_init=0;
+static struct RastPort temprp;
+
+static int CGX_HWAccelBlit(SDL_Surface *src, SDL_Rect *srcrect,
+					SDL_Surface *dst, SDL_Rect *dstrect)
+{
+	struct SDL_VideoDevice *this=src->hwdata->videodata;
+
+//	D(bug("Accel blit!\n"));
+
+	if(src->flags&SDL_SRCCOLORKEY && src->hwdata->mask)
+	{
+		if(dst==SDL_VideoSurface)
+		{
+			BMKBRP(src->hwdata->bmap,srcrect->x,srcrect->y,
+						SDL_RastPort,dstrect->x+SDL_Window->BorderLeft,dstrect->y+SDL_Window->BorderTop,
+						srcrect->w,srcrect->h,0xc0,src->hwdata->mask);
+		}
+		else if(dst->hwdata)
+		{
+			if(!temprp_init)
+			{
+				InitRastPort(&temprp);
+				temprp_init=1;
+			}
+			temprp.BitMap=(struct BitMap *)dst->hwdata->bmap;
+
+			BMKBRP(src->hwdata->bmap,srcrect->x,srcrect->y,
+						&temprp,dstrect->x,dstrect->y,
+						srcrect->w,srcrect->h,0xc0,src->hwdata->mask);
+			
+		}
+	}
+	else if(dst==SDL_VideoSurface)
+	{
+		BBRP(src->hwdata->bmap,srcrect->x,srcrect->y,SDL_RastPort,dstrect->x+SDL_Window->BorderLeft,dstrect->y+SDL_Window->BorderTop,srcrect->w,srcrect->h,0xc0);
+	}
+	else if(dst->hwdata)
+		BBB(src->hwdata->bmap,srcrect->x,srcrect->y,dst->hwdata->bmap,dstrect->x,dstrect->y,srcrect->w,srcrect->h,0xc0,0xff,NULL);
+}
+
+int CGX_FillHWRect(_THIS,SDL_Surface *dst,SDL_Rect *dstrect,Uint32 color)
+{
+	if(dst==SDL_VideoSurface)
+	{
+		FillPixelArray(SDL_RastPort,dstrect->x+SDL_Window->BorderLeft,dstrect->y+SDL_Window->BorderTop,dstrect->w,dstrect->h,color);
+	}
+	else if(dst->hwdata)
+	{
+		if(!temprp_init)
+		{
+			InitRastPort(&temprp);
+			temprp_init=1;
+		}
+
+		temprp.BitMap=(struct BitMap *)dst->hwdata->bmap;
+
+		FillPixelArray(&temprp,dstrect->x,dstrect->y,dstrect->w,dstrect->h,color);
+	}
+}