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Diffstat (limited to 'distrib/sdl-1.2.12/src/video/cybergfx/SDL_cgxaccel.c')
-rw-r--r--distrib/sdl-1.2.12/src/video/cybergfx/SDL_cgxaccel.c262
1 files changed, 262 insertions, 0 deletions
diff --git a/distrib/sdl-1.2.12/src/video/cybergfx/SDL_cgxaccel.c b/distrib/sdl-1.2.12/src/video/cybergfx/SDL_cgxaccel.c
new file mode 100644
index 0000000..24605e3
--- /dev/null
+++ b/distrib/sdl-1.2.12/src/video/cybergfx/SDL_cgxaccel.c
@@ -0,0 +1,262 @@
+/*
+ SDL - Simple DirectMedia Layer
+ Copyright (C) 1997-2006 Sam Lantinga
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+ Sam Lantinga
+ slouken@libsdl.org
+*/
+#include "SDL_config.h"
+
+#include "SDL_endian.h"
+#include "SDL_video.h"
+#include "../SDL_sysvideo.h"
+#include "../SDL_blit.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__) || defined(MORPHOS)
+#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)
+ SDL_free(surface->hwdata->mask);
+
+ if(surface->hwdata->mask=SDL_malloc(RASSIZE(surface->w,surface->h)))
+ {
+ Uint32 pitch,ok=0;
+ APTR lock;
+
+ SDL_memset(surface->hwdata->mask,255,RASSIZE(surface->w,surface->h));
+
+ D(bug("Building colorkey mask: color: %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..."));
+ SDL_free(surface->hwdata->mask);
+ surface->hwdata->mask=NULL;
+ ok=-1;
+ }
+ UnLockBitMap(lock);
+ D(bug("...Colorkey built!\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);
+
+ return 0;
+}
+
+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);
+ }
+ return 0;
+}
generated by cgit v1.1 at 2024-05-18 19:37:17 +0000