sdl_cgximage.c

Simple DirectMedia Layer - Simple DirectMedia Layer 是一个跨平台的多媒体库设计用来提供快速图形framebuffer和音频驱动。应用MPEG为软件

			}

			WLUT(this->screen->pixels,rects[i].x, rects[i].y,this->screen->pitch,
					SDL_RastPort,SDL_XPixels,SDL_Window->BorderLeft+rects[i].x,SDL_Window->BorderTop+rects[i].y,
					rects[i].w,rects[i].h,CTABFMT_XRGB8);
		}
#else
		unsigned char *bm_address;
		Uint32	destpitch;
		APTR handle;

		if(handle=LockBitMapTags(SDL_RastPort->BitMap,LBMI_BASEADDRESS,&bm_address,
								LBMI_BYTESPERROW,&destpitch,TAG_DONE))
		{
			int srcwidth;
			unsigned char *destbase;
			register int j,k,t;
			register unsigned char *mask,*dst;
			register unsigned char *src,*dest;

// Aggiungo il bordo della finestra se sono fullscreen.
			if(currently_fullscreen)
				destbase=bm_address;
			else
				destbase=bm_address+(SDL_Window->TopEdge+SDL_Window->BorderTop)*destpitch+(SDL_Window->BorderLeft+SDL_Window->LeftEdge)*this->hidden->BytesPerPixel;

			for ( i=0; i<numrects; ++i ) 
			{
				srcwidth=rects[i].w;

				if ( !srcwidth ) { /* Clipped? */
					continue;
				}

				dest=destbase+rects[i].x*this->hidden->BytesPerPixel;
				dest+=(rects[i].y*destpitch);
				src=((char *)(this->screen->pixels))+rects[i].x;
				src+=(rects[i].y*this->screen->pitch);
				
				for(j=rects[i].h;j;--j)
				{
					dst=dest;
// SLOW routine, used for 8->24 bit mapping
					for(k=0;k<srcwidth;k++)
					{
						mask=(unsigned char *)(&SDL_XPixels[src[k]]);
						for(t=0;t<bpp;t++)
						{
							dst[t]=mask[t];
						}
						dst+=bpp;
					}
					src+=this->screen->pitch;
					dest+=destpitch;
				}
			}
			UnLockBitMap(handle);
		}
	}
	else if (customroutine==3)
	{
		unsigned char *bm_address;
		Uint32	destpitch;
		APTR handle;

		if(handle=LockBitMapTags(SDL_RastPort->BitMap,LBMI_BASEADDRESS,&bm_address,
								LBMI_BYTESPERROW,&destpitch,TAG_DONE))
		{
			int srcwidth;
			unsigned char *destbase;
			register int j,k;
			register unsigned char *src,*dest;
			register Uint16 *destl,*srcl;

			if(currently_fullscreen)
				destbase=bm_address;
			else
				destbase=bm_address+(SDL_Window->TopEdge+SDL_Window->BorderTop)*destpitch+(SDL_Window->BorderLeft+SDL_Window->LeftEdge)*this->hidden->BytesPerPixel;

			for ( i=0; i<numrects; ++i ) 
			{
				srcwidth=rects[i].w;

				if ( !srcwidth ) { /* Clipped? */
					continue;
				}

				dest=destbase+rects[i].x*this->hidden->BytesPerPixel;
				dest+=(rects[i].y*destpitch);
				src=((char *)(this->screen->pixels))+rects[i].x;
				src+=(rects[i].y*this->screen->pitch);
				
// This is the fast, well not too slow, remapping code for 16bit displays

				for(j=rects[i].h;j;--j)
				{
					destl=(Uint16 *)dest;

					for(k=0;k<srcwidth;k++)
					{
						srcl=(Uint16 *)&SDL_XPixels[src[k]];
						*destl=*srcl;
						destl++;
					}
					src+=this->screen->pitch;
					dest+=destpitch;
				}
			}
			UnLockBitMap(handle);
		}
	}
	else if (customroutine==4)
	{
		unsigned char *bm_address;
		Uint32	destpitch;
		APTR handle;

		if(handle=LockBitMapTags(SDL_RastPort->BitMap,LBMI_BASEADDRESS,&bm_address,
								LBMI_BYTESPERROW,&destpitch,TAG_DONE))
		{
			int srcwidth;
			unsigned char *destbase;
			register int j,k;
			register unsigned char *src,*dest;
			register Uint32 *destl,*srcl;

			if(currently_fullscreen)
				destbase=bm_address;
			else
				destbase=bm_address+(SDL_Window->TopEdge+SDL_Window->BorderTop)*destpitch+(SDL_Window->BorderLeft+SDL_Window->LeftEdge)*this->hidden->BytesPerPixel;

			for ( i=0; i<numrects; ++i ) 
			{
				srcwidth=rects[i].w;

				if ( !srcwidth ) { /* Clipped? */
					continue;
				}

				dest=destbase+rects[i].x*this->hidden->BytesPerPixel;
				dest+=(rects[i].y*destpitch);
				src=((char *)(this->screen->pixels))+rects[i].x;
				src+=(rects[i].y*this->screen->pitch);
				
// This is the fast, well not too slow, remapping code for 32bit displays

				for(j=rects[i].h;j;--j)
				{
					destl=(Uint32 *)dest;

					for(k=0;k<srcwidth;k++)
					{
						srcl=(Uint32 *)&SDL_XPixels[src[k]];
						*destl=*srcl;
						destl++;
					}
					src+=this->screen->pitch;
					dest+=destpitch;
				}
			}
			UnLockBitMap(handle);
		}
#endif
	}
	else if(customroutine)
	{
		unsigned char *bm_address;
		Uint32	destpitch;
		APTR handle;

//		D(bug("Using customroutine!\n"));

		if(handle=LockBitMapTags(SDL_RastPort->BitMap,LBMI_BASEADDRESS,(ULONG)&bm_address,
								LBMI_BYTESPERROW,(ULONG)&destpitch,TAG_DONE))
		{
			unsigned char *destbase;
			register int j,srcwidth;
			register unsigned char *src,*dest;

// Aggiungo il bordo della finestra se sono fullscreen.
			if(currently_fullscreen)
				destbase=bm_address;
			else
				destbase=bm_address+(SDL_Window->TopEdge+SDL_Window->BorderTop)*destpitch+(SDL_Window->BorderLeft+SDL_Window->LeftEdge)*this->screen->format->BytesPerPixel;

			for ( i=0; i<numrects; ++i ) 
			{
				srcwidth=rects[i].w;

				if ( !srcwidth ) { /* Clipped? */
					continue;
				}

				dest=destbase+rects[i].x*this->screen->format->BytesPerPixel;
				dest+=(rects[i].y*destpitch);
				src=((char *)(this->screen->pixels))+rects[i].x*this->screen->format->BytesPerPixel;
				src+=(rects[i].y*this->screen->pitch);
				
				srcwidth*=this->screen->format->BytesPerPixel;

//				D(bug("Rects: %ld,%ld %ld,%ld Src:%lx Dest:%lx\n",rects[i].x,rects[i].y,rects[i].w,rects[i].h,src,dest));

				for(j=rects[i].h;j;--j)
				{
					memcpy(dest,src,srcwidth);
					src+=this->screen->pitch;
					dest+=destpitch;
				}
			}
			UnLockBitMap(handle);
//			D(bug("Rectblit addr: %lx pitch: %ld rects:%ld srcptr: %lx srcpitch: %ld\n",bm_address,destpitch,numrects,this->screen->pixels,this->screen->pitch));
		}
	}
	else
	{
		for ( i=0; i<numrects; ++i ) {
			if ( ! rects[i].w ) { /* Clipped? */
				continue;
			}
			USE_WPA(this->screen->pixels,rects[i].x, rects[i].y,this->screen->pitch,
					SDL_RastPort,SDL_Window->BorderLeft+rects[i].x,SDL_Window->BorderTop+rects[i].y,
					rects[i].w,rects[i].h,format);
		}
	}
}

void CGX_RefreshDisplay(_THIS)
{
	int format,customroutine=0;
#ifndef USE_CGX_WRITELUTPIXEL
	int bpp;
#endif
	/* Don't refresh a display that doesn't have an image (like GL) */
	if ( ! SDL_Ximage ) {
		return;
	}

	if(this->hidden->same_format && !use_picasso96)
	{
		format=RECTFMT_RAW;
	}
	else switch(this->screen->format->BytesPerPixel)
	{
		case 4:
			format=RECTFMT_RGBA;
			break;
		case 3:
			format=RECTFMT_RGB;
			break;
		case 2:
			customroutine=1;
			break;
		case 1:
//			D(bug("soft depth: 8 hardbpp: %ld\n",this->hidden->depth));
			if(this->hidden->depth>8)
			{
#ifndef USE_CGX_WRITELUTPIXEL
				if(this->hidden->depth>32)
					customroutine=4;
				else if(this->hidden->depth>16)
				{
					bpp=this->hidden->BytesPerPixel; // That one is the only one that needs bpp
					customroutine=2; // The slow one!
				}
				else
					customroutine=3;
#else

				customroutine=2;
#endif
//				format=RECTFMT_LUT8;
			}
			else
				customroutine=1;
			break;

	}

		/* Check for endian-swapped X server, swap if necessary */
	if ( swap_pixels &&
	     ((this->screen->format->BytesPerPixel%2) == 0) ) {
		CGX_SwapAllPixels(this->screen);
		USE_WPA(this->screen->pixels,0,0,this->screen->pitch,
				SDL_RastPort,SDL_Window->BorderLeft,SDL_Window->BorderTop,
				this->screen->w,this->screen->h,format);
		CGX_SwapAllPixels(this->screen);
	}
	else if (customroutine==2)
	{
#ifdef USE_CGX_WRITELUTPIXEL
		WLUT(this->screen->pixels,0,0,this->screen->pitch,
					SDL_RastPort,SDL_XPixels,SDL_Window->BorderLeft,SDL_Window->BorderTop,
					this->screen->w,this->screen->h,CTABFMT_XRGB8);
#else
		unsigned char *bm_address;
		Uint32	destpitch;
		APTR handle;

		if(handle=LockBitMapTags(SDL_RastPort->BitMap,LBMI_BASEADDRESS,(ULONG)&bm_address,
								LBMI_BYTESPERROW,(ULONG)&destpitch,TAG_DONE))
		{
			register int j,k,t;
			register unsigned char *mask,*dst;
			register unsigned char *src,*dest;

// Aggiungo il bordo della finestra se sono fullscreen.
			if(!currently_fullscreen)
				dest=bm_address+(SDL_Window->TopEdge+SDL_Window->BorderTop)*destpitch+(SDL_Window->BorderLeft+SDL_Window->LeftEdge)*this->hidden->BytesPerPixel;
			else
				dest=bm_address;

			src=this->screen->pixels;
				
			for(j=this->screen->h;j;--j)
			{
				dst=dest;
// SLOW routine, used for 8->24 bit mapping
				for(k=0;k<this->screen->w;k++)
				{
					mask=(unsigned char *)(&SDL_XPixels[src[k]]);
					for(t=0;t<bpp;t++)
					{
						dst[t]=mask[t];
					}
					dst+=bpp;
				}
				src+=this->screen->pitch;
				dest+=destpitch;
			}
			UnLockBitMap(handle);
		}
	}
	else if (customroutine==3)
	{
		unsigned char *bm_address;
		Uint32	destpitch;
		APTR handle;

		if(handle=LockBitMapTags(SDL_RastPort->BitMap,LBMI_BASEADDRESS,(ULONG)&bm_address,
								LBMI_BYTESPERROW,(ULONG)&destpitch,TAG_DONE))
		{
			register int j,k;
			register unsigned char *src,*dest;
			register Uint16 *destl,*srcl;

			if(!currently_fullscreen)
				dest=bm_address+(SDL_Window->TopEdge+SDL_Window->BorderTop)*destpitch+(SDL_Window->BorderLeft+SDL_Window->LeftEdge)*this->hidden->BytesPerPixel;
			else
				dest=bm_address;

			src=this->screen->pixels;
				
// This is the fast, well not too slow, remapping code for 16bit displays

			for(j=this->screen->h;j;--j)
			{
				destl=(Uint16 *)dest;

				for(k=0;k<this->screen->w;k++)
				{
					srcl=(Uint16 *)&SDL_XPixels[src[k]];
					*destl=*srcl;
					destl++;
				}
				src+=this->screen->pitch;
				dest+=destpitch;
			}
			UnLockBitMap(handle);
		}
	}
	else if (customroutine==4)
	{
		unsigned char *bm_address;
		Uint32	destpitch;
		APTR handle;

		if(handle=LockBitMapTags(SDL_RastPort->BitMap,LBMI_BASEADDRESS,(ULONG)&bm_address,
								LBMI_BYTESPERROW,(ULONG)&destpitch,TAG_DONE))
		{
			register int j,k;
			register unsigned char *src,*dest;
			register Uint32 *destl,*srcl;

			if(!currently_fullscreen)
				dest=bm_address+(SDL_Window->TopEdge+SDL_Window->BorderTop)*destpitch+(SDL_Window->BorderLeft+SDL_Window->LeftEdge)*this->hidden->BytesPerPixel;
			else
				dest=bm_address;

			src=this->screen->pixels;
				
// This is the fast, well not too slow, remapping code for 32bit displays

			for(j=this->screen->h;j;--j)
			{
				destl=(Uint32 *)dest;

				for(k=0;k<this->screen->w;k++)
				{
					srcl=(Uint32 *)&SDL_XPixels[src[k]];
					*destl=*srcl;
					destl++;
				}
				src+=this->screen->pitch;
				dest+=destpitch;
			}
			UnLockBitMap(handle);
		}
#endif
	}
	else if(customroutine)
	{
		unsigned char *bm_address;
		Uint32	destpitch;
		APTR handle;

		if(handle=LockBitMapTags(SDL_RastPort->BitMap,
					LBMI_BASEADDRESS,(ULONG)&bm_address,
					LBMI_BYTESPERROW,(ULONG)&destpitch,TAG_DONE))
		{
			register int j;
			register unsigned char *src,*dest;

			if(!currently_fullscreen)
				dest=bm_address+(SDL_Window->TopEdge+SDL_Window->BorderTop)*destpitch+(SDL_Window->BorderLeft+SDL_Window->LeftEdge)*this->screen->format->BytesPerPixel;
			else
				dest=bm_address;

			src=this->screen->pixels;
				
//			D(bug("addr: %lx pitch: %ld src:%lx srcpitch: %ld\n",dest,destpitch,this->screen->pixels,this->screen->pitch));

			if(this->screen->pitch==destpitch)
			{
				memcpy(dest,src,this->screen->pitch*this->screen->h);
			}
			else
			{
				for(j=this->screen->h;j;--j)
				{
					memcpy(dest,src,this->screen->pitch);
					src+=this->screen->pitch;
					dest+=destpitch;
				}
			}

			UnLockBitMap(handle);
		}
	}
	else
	{
		USE_WPA(this->screen->pixels,0,0,this->screen->pitch,
				SDL_RastPort,SDL_Window->BorderLeft,SDL_Window->BorderTop,
				this->screen->w,this->screen->h,format);
	}

}