/* $XConsortium: mpblend.c,v 1.5 94/04/17 20:35:12 rws Exp $ */ /**** module mpblend.c ****/ /****************************************************************************** Copyright (c) 1993, 1994 X Consortium Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. Except as contained in this notice, the name of the X Consortium shall not be used in advertising or otherwise to promote the sale, use or other dealings in this Software without prior written authorization from the X Consortium. NOTICE This software is being provided by AGE Logic, Inc. under the following license. By obtaining, using and/or copying this software, you agree that you have read, understood, and will comply with these terms and conditions: Permission to use, copy, modify, distribute and sell this software and its documentation for any purpose and without fee or royalty and to grant others any or all rights granted herein is hereby granted, provided that you agree to comply with the following copyright notice and statements, including the disclaimer, and that the same appears on all copies and derivative works of the software and documentation you make. "Copyright 1993, 1994 by AGE Logic, Inc." THIS SOFTWARE IS PROVIDED "AS IS". AGE LOGIC MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED. By way of example, but not limitation, AGE LOGIC MAKE NO REPRESENTATIONS OR WARRANTIES OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE OR THAT THE SOFTWARE DOES NOT INFRINGE THIRD-PARTY PROPRIETARY RIGHTS. AGE LOGIC SHALL BEAR NO LIABILITY FOR ANY USE OF THIS SOFTWARE. IN NO EVENT SHALL EITHER PARTY BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOSS OF PROFITS, REVENUE, DATA OR USE, INCURRED BY EITHER PARTY OR ANY THIRD PARTY, WHETHER IN AN ACTION IN CONTRACT OR TORT OR BASED ON A WARRANTY, EVEN IF AGE LOGIC LICENSEES HEREUNDER HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. The name of AGE Logic, Inc. may not be used in advertising or publicity pertaining to this software without specific, written prior permission from AGE Logic. Title to this software shall at all times remain with AGE Logic, Inc. ***************************************************************************** mpblend.c -- DDXIE Blend element Dean Verheiden -- AGE Logic, Inc. June, 1993 *****************************************************************************/ #define _XIEC_MPBLEND #define _XIEC_PBLEND /* * Include files */ #include /* * Core X Includes */ #include #include /* * XIE Includes */ #include #include /* * more X server includes. */ #include #include /* * Server XIE Includes */ #include #include #include #include typedef float BlendFloat; /* * routines referenced by other DDXIE modules */ int miAnalyzeBlend(); /* * routines used internal to this module */ static int CreateBlend(); static int ResetBlend(); static int DestroyBlend(); static int InitializeMonoBlend(); static int InitializeDualBlend(); static int InitializeMonoAlphaBlend(); static int InitializeDualAlphaBlend(); static int MonoBlend(); static int DualBlend(); static int MonoAlphaBlend(); static int DualAlphaBlend(); /* * DDXIE Blend entry points */ static ddElemVecRec BlendVec = { CreateBlend, (xieIntProc)NULL, (xieIntProc)NULL, (xieIntProc)NULL, ResetBlend, DestroyBlend }; /* * Local Declarations. */ typedef struct _mpblenddef { void (*action) (); } mpBlendPvtRec, *mpBlendPvtPtr; /*------------------------------------------------------------------------ ------------------- see if we can handle this element -------------------- ------------------------------------------------------------------------*/ int miAnalyzeBlend(flo,ped) floDefPtr flo; peDefPtr ped; { xieFloBlend *raw = (xieFloBlend *)ped->elemRaw; pBlendDefPtr pvt = (pBlendDefPtr)ped->elemPvt; CARD16 aindex = pvt->aindex; /* for now just stash our entry point vector in the peDef */ ped->ddVec = BlendVec; if (aindex) { if (raw->src2) { ped->ddVec.initialize = InitializeDualAlphaBlend; ped->ddVec.activate = DualAlphaBlend; } else { ped->ddVec.initialize = InitializeMonoAlphaBlend; ped->ddVec.activate = MonoAlphaBlend; } } else { if (raw->src2) { ped->ddVec.initialize = InitializeDualBlend; ped->ddVec.activate = DualBlend; } else { ped->ddVec.initialize = InitializeMonoBlend; ped->ddVec.activate = MonoBlend; } } return(TRUE); } /* end miAnalyzeBlend */ /*------------------------------------------------------------------------ ---------------------------- create peTex . . . -------------------------- ------------------------------------------------------------------------*/ static int CreateBlend(flo,ped) floDefPtr flo; peDefPtr ped; { int auxsize = xieValMaxBands * sizeof(mpBlendPvtRec); /* always force syncing between inputs (is nop if only one input) */ return MakePETex(flo, ped, auxsize, SYNC , NO_SYNC); } /* end CreateBlend */ static void MonoR(), MonoQ(), MonoP(), MonoB(); /*------------------------------------------------------------------------ ---------------------------- initialize peTex . . . ---------------------- ------------------------------------------------------------------------*/ static int InitializeMonoBlend(flo,ped) floDefPtr flo; peDefPtr ped; { xieFloBlend *raw = (xieFloBlend *)ped->elemRaw; CARD8 msk = raw->bandMask; peTexPtr pet = ped->peTex; receptorPtr rcp = pet->receptor; mpBlendPvtPtr pvt = (mpBlendPvtPtr) pet->private; int band, nbands; bandPtr iband; /* If processing domain, allow replication */ if (raw->domainPhototag) pet->receptor[ped->inCnt-1].band[0].replicate = msk; if (!(InitReceptor(flo,ped,&rcp[SRCt1],NO_DATAMAP,1,msk,~msk) && InitProcDomain(flo, ped, raw->domainPhototag, raw->domainOffsetX, raw->domainOffsetY) && InitEmitter(flo,ped,NO_DATAMAP,SRCt1))) return (FALSE); /* Figure out the appropriate action vector */ nbands = pet->receptor[SRCtag].inFlo->bands; iband = &(pet->receptor[SRCtag].band[0]); for(band = 0; band < nbands; band++, pvt++, iband++) { switch (iband->format->class) { case UNCONSTRAINED: pvt->action = MonoR; break; case QUAD_PIXEL: pvt->action = MonoQ; break; case PAIR_PIXEL: pvt->action = MonoP; break; case BYTE_PIXEL: pvt->action = MonoB; break; case BIT_PIXEL: default: ImplementationError(flo, ped, return(FALSE)); break; } } return( TRUE ); } /* end InitializeMonoBlend */ static void DualR(), DualQ(), DualP(), DualB(); /*------------------------------------------------------------------------ ---------------------------- initialize peTex . . . ---------------------- ------------------------------------------------------------------------*/ static int InitializeDualBlend(flo,ped) floDefPtr flo; peDefPtr ped; { xieFloBlend *raw = (xieFloBlend *)ped->elemRaw; peTexPtr pet = ped->peTex; CARD8 msk = raw->bandMask; receptorPtr rcp = pet->receptor; mpBlendPvtPtr pvt = (mpBlendPvtPtr) pet->private; int band, nbands; bandPtr iband; /* If processing domain, allow replication */ if (raw->domainPhototag) pet->receptor[ped->inCnt-1].band[0].replicate = msk; if (!(InitReceptor(flo,ped,&rcp[SRCt1],NO_DATAMAP,1,msk,~msk) && InitReceptor(flo,ped,&rcp[SRCt2],NO_DATAMAP,1,msk,NO_BANDS) && InitProcDomain(flo, ped, raw->domainPhototag, raw->domainOffsetX, raw->domainOffsetY) && InitEmitter(flo,ped,0,SRCt1))) return (FALSE); /* Figure out the appropriate action vector */ nbands = pet->receptor[SRCtag].inFlo->bands; iband = &(pet->receptor[SRCtag].band[0]); for(band = 0; band < nbands; band++, pvt++, iband++) { switch (iband->format->class) { case UNCONSTRAINED: pvt->action = DualR; break; case QUAD_PIXEL: pvt->action = DualQ; break; case PAIR_PIXEL: pvt->action = DualP; break; case BYTE_PIXEL: pvt->action = DualB; break; case BIT_PIXEL: default: ImplementationError(flo, ped, return(FALSE)); break; } } return( TRUE ); } /* end InitializeDualBlend */ static void MonoAlphaRQ(), MonoAlphaQQ(), MonoAlphaPQ(), MonoAlphaBQ(); static void MonoAlphaRP(), MonoAlphaQP(), MonoAlphaPP(), MonoAlphaBP(); static void MonoAlphaRB(), MonoAlphaQB(), MonoAlphaPB(), MonoAlphaBB(); /*------------------------------------------------------------------------ ---------------------------- initialize peTex . . . ---------------------- ------------------------------------------------------------------------*/ static int InitializeMonoAlphaBlend(flo,ped) floDefPtr flo; peDefPtr ped; { peTexPtr pet = ped->peTex; xieFloBlend *raw = (xieFloBlend *)ped->elemRaw; CARD8 msk = raw->bandMask; receptorPtr rcp = pet->receptor; CARD16 aindex = ((pBlendDefPtr)ped->elemPvt)->aindex; bandPtr ab = &pet->receptor[aindex].band[0]; CARD8 nbands = pet->receptor[SRCtag].inFlo->bands; CARD8 abands = pet->receptor[aindex].inFlo->bands; mpBlendPvtPtr pvt = (mpBlendPvtPtr) pet->private; int band; bandPtr iband; /* Replicate the alpha plane to all active bands */ if (nbands == 3 && abands == 1) ab->replicate = msk; /* If processing domain, allow replication */ if (raw->domainPhototag) pet->receptor[ped->inCnt-1].band[0].replicate = msk; if (!(InitReceptor(flo,ped,&rcp[SRCt1],NO_DATAMAP,1,msk,~msk) && InitReceptor(flo,ped,&rcp[aindex],NO_DATAMAP,1,1,NO_BANDS) && InitProcDomain(flo, ped, raw->domainPhototag, raw->domainOffsetX, raw->domainOffsetY) && InitEmitter(flo,ped,0,SRCt1))) return (FALSE); /* Figure out the appropriate action vector based on src and alpha plane */ iband = &(pet->receptor[SRCtag].band[0]); for(band = 0; band < nbands; band++, pvt++, iband++) { switch (iband->format->class) { case UNCONSTRAINED: switch (ab->format->class) { case QUAD_PIXEL: pvt->action = MonoAlphaRQ; break; case PAIR_PIXEL: pvt->action = MonoAlphaRP; break; case BYTE_PIXEL: pvt->action = MonoAlphaRB; break; case BIT_PIXEL: default: ImplementationError(flo, ped, return(FALSE)); break; } break; case QUAD_PIXEL: switch (ab->format->class) { case QUAD_PIXEL: pvt->action = MonoAlphaQQ; break; case PAIR_PIXEL: pvt->action = MonoAlphaQP; break; case BYTE_PIXEL: pvt->action = MonoAlphaQB; break; case BIT_PIXEL: default: ImplementationError(flo, ped, return(FALSE)); break; } break; case PAIR_PIXEL: switch (ab->format->class) { case QUAD_PIXEL: pvt->action = MonoAlphaPQ; break; case PAIR_PIXEL: pvt->action = MonoAlphaPP; break; case BYTE_PIXEL: pvt->action = MonoAlphaPB; break; case BIT_PIXEL: default: ImplementationError(flo, ped, return(FALSE)); break; } break; case BYTE_PIXEL: switch (ab->format->class) { case QUAD_PIXEL: pvt->action = MonoAlphaBQ; break; case PAIR_PIXEL: pvt->action = MonoAlphaBP; break; case BYTE_PIXEL: pvt->action = MonoAlphaBB; break; case BIT_PIXEL: default: ImplementationError(flo, ped, return(FALSE)); break; } break; case BIT_PIXEL: default: ImplementationError(flo, ped, return(FALSE)); break; } } return( TRUE ); } /* end InitializeMonoAlphaBlend */ static void DualAlphaRQ(), DualAlphaQQ(), DualAlphaPQ(), DualAlphaBQ(); static void DualAlphaRP(), DualAlphaQP(), DualAlphaPP(), DualAlphaBP(); static void DualAlphaRB(), DualAlphaQB(), DualAlphaPB(), DualAlphaBB(); /*------------------------------------------------------------------------ ---------------------------- initialize peTex . . . ---------------------- ------------------------------------------------------------------------*/ static int InitializeDualAlphaBlend(flo,ped) floDefPtr flo; peDefPtr ped; { peTexPtr pet = ped->peTex; xieFloBlend *raw = (xieFloBlend *)ped->elemRaw; CARD8 msk = raw->bandMask; receptorPtr rcp = pet->receptor; CARD16 aindex = ((pBlendDefPtr)ped->elemPvt)->aindex; bandPtr ab = &pet->receptor[aindex].band[0]; mpBlendPvtPtr pvt = (mpBlendPvtPtr) pet->private; CARD8 nbands = pet->receptor[SRCtag].inFlo->bands; CARD8 abands = pet->receptor[aindex].inFlo->bands; int band; bandPtr iband; /* Replicate the alpha plane to all active bands */ if (nbands == 3 && abands == 1) ab->replicate = msk; /* If processing domain, allow replication */ if (raw->domainPhototag) pet->receptor[ped->inCnt-1].band[0].replicate = msk; if (!(InitReceptor(flo,ped,&rcp[SRCt1],NO_DATAMAP,1,msk,~msk) && InitReceptor(flo,ped,&rcp[SRCt2],NO_DATAMAP,1,msk,NO_BANDS) && InitReceptor(flo,ped,&rcp[aindex],NO_DATAMAP,1,1,NO_BANDS) && InitProcDomain(flo, ped, raw->domainPhototag, raw->domainOffsetX, raw->domainOffsetY) && InitEmitter(flo,ped,0,SRCt1))) return (FALSE); /* Figure out the appropriate action vector based on src and alpha plane */ iband = &(pet->receptor[SRCtag].band[0]); for(band = 0; band < nbands; band++, pvt++, iband++) { switch (iband->format->class) { case UNCONSTRAINED: switch (ab->format->class) { case QUAD_PIXEL: pvt->action = DualAlphaRQ; break; case PAIR_PIXEL: pvt->action = DualAlphaRP; break; case BYTE_PIXEL: pvt->action = DualAlphaRB; break; case BIT_PIXEL: default: ImplementationError(flo, ped, return(FALSE)); break; } break; case QUAD_PIXEL: switch (ab->format->class) { case QUAD_PIXEL: pvt->action = DualAlphaQQ; break; case PAIR_PIXEL: pvt->action = DualAlphaQP; break; case BYTE_PIXEL: pvt->action = DualAlphaQB; break; case BIT_PIXEL: default: ImplementationError(flo, ped, return(FALSE)); break; } break; case PAIR_PIXEL: switch (ab->format->class) { case QUAD_PIXEL: pvt->action = DualAlphaPQ; break; case PAIR_PIXEL: pvt->action = DualAlphaPP; break; case BYTE_PIXEL: pvt->action = DualAlphaPB; break; case BIT_PIXEL: default: ImplementationError(flo, ped, return(FALSE)); break; } break; case BYTE_PIXEL: switch (ab->format->class) { case QUAD_PIXEL: pvt->action = DualAlphaBQ; break; case PAIR_PIXEL: pvt->action = DualAlphaBP; break; case BYTE_PIXEL: pvt->action = DualAlphaBB; break; case BIT_PIXEL: default: ImplementationError(flo, ped, return(FALSE)); break; } break; case BIT_PIXEL: default: ImplementationError(flo, ped, return(FALSE)); break; } } return( TRUE ); } /* end InitializeDualAlphaBlend */ /*------------------------------------------------------------------------ ------------------------ crank some single input data -------------------- ------------------------------------------------------------------------*/ static int MonoBlend(flo,ped,pet) floDefPtr flo; peDefPtr ped; peTexPtr pet; { pBlendDefPtr pvt = (pBlendDefPtr) ped->elemPvt; BlendFloat aconst1 = pvt->alphaConst; BlendFloat aconst2 = (BlendFloat)1.0 - aconst1; double *sconst = pvt->constant; receptorPtr rcp = pet->receptor; CARD32 bands = rcp[SRCt1].inFlo->bands; bandPtr sb1 = &rcp[SRCt1].band[0]; bandPtr bnd = &pet->emitter[0]; mpBlendPvtPtr mpvt = (mpBlendPvtPtr) pet->private; pointer sr1, dst; CARD32 b; for(b = 0; b < bands; b++, sb1++, bnd++, sconst++, mpvt++) { BlendFloat offset = *sconst * aconst1; /* get pointers to the initial src and dst scanlines */ sr1 = GetCurrentSrc(flo,pet,sb1); dst = GetCurrentDst(flo,pet,bnd); /* continue while all is well and we have pointers */ while(!ferrCode(flo) && sr1 && dst && SyncDomain(flo,ped,bnd,FLUSH)) { INT32 run, currentx = 0; if (sr1 != dst) memcpy (dst, sr1, bnd->pitch); while (run = GetRun(flo,pet,bnd)) { if (run > 0) { (*(mpvt->action)) (currentx,run,sr1,dst,aconst2,offset); currentx += run; } else currentx -= run; } /* get pointers to the next src and dst scanlines */ sr1 = GetNextSrc(flo,pet,sb1,TRUE); dst = GetNextDst(flo,pet,bnd,TRUE); } /* make sure the scheduler knows how much src we used */ FreeData(flo,pet,sb1,sb1->current); } return(TRUE); } /* end MonoBlend */ /*------------------------------------------------------------------------ -- Case with two inputs: src1, src2, no alpha plane --------------------- ------------------------------------------------------------------------*/ static int DualBlend(flo,ped,pet) floDefPtr flo; peDefPtr ped; peTexPtr pet; { BlendFloat aconst1 = ((pBlendDefPtr)ped->elemPvt)->alphaConst; BlendFloat aconst2 = 1.0 - aconst1; receptorPtr rcp = pet->receptor; CARD32 bands = rcp[SRCt1].inFlo->bands; bandPtr sb1 = &rcp[SRCt1].band[0]; bandPtr sb2 = &rcp[SRCt2].band[0]; bandPtr bnd = &pet->emitter[0]; mpBlendPvtPtr mpvt = (mpBlendPvtPtr) pet->private; pointer sr1, sr2, dst; CARD32 b, w; for(b = 0; b < bands; b++,sb1++,sb2++,bnd++,mpvt++) { /* Figure out if any data from the first band passes through unchanged */ if(sb1->format->width > sb2->format->width) w = sb2->format->width; else w = sb1->format->width; /* get pointers to the initial src-1, src-2, and dst scanlines */ sr1 = GetCurrentSrc(flo,pet,sb1); sr2 = GetCurrentSrc(flo,pet,sb2); dst = GetCurrentDst(flo,pet,bnd); /* continue while all is well and we have pointers */ while(!ferrCode(flo) && sr1 && sr2 && dst && SyncDomain(flo,ped,bnd,FLUSH)) { INT32 run, currentx = 0; if (sr1 != dst) memcpy (dst, sr1, bnd->pitch); while ((run = GetRun(flo,pet,bnd)) && currentx < w) { if (run > 0) { if (currentx + run > w) /* Yuck, have to clip */ run = w - currentx; (*(mpvt->action)) (currentx,run,sr1,sr2,dst,aconst1,aconst2); currentx += run; } else currentx -= run; } /* get pointers to the next src-1, src-2, and dst scanlines */ sr1 = GetNextSrc(flo,pet,sb1,TRUE); sr2 = GetNextSrc(flo,pet,sb2,TRUE); dst = GetNextDst(flo,pet,bnd,TRUE); } /* If src2 < sr1, pass remaining lines through untouched */ if(!sr1 && sb1->final) /* when sr1 runs out, we're done */ DisableSrc(flo,pet,sb2,FLUSH); else if(!sr2 && sb2->final) /* when sr2 runs out, pass-thru sr1 */ BypassSrc(flo,pet,sb1); else { /* both inputs still active, keep the scheduler up to date */ FreeData(flo,pet,sb1,sb1->current); FreeData(flo,pet,sb2,sb2->current); } } return(TRUE); } /* end DualBlend */ /*------------------------------------------------------------------------ -- Case with two inputs: src1, alpha plane, no src2 --------------------- ------------------------------------------------------------------------*/ static int MonoAlphaBlend(flo,ped,pet) floDefPtr flo; peDefPtr ped; peTexPtr pet; { pBlendDefPtr pvt = (pBlendDefPtr) ped->elemPvt; BlendFloat invaconst = 1/pvt->alphaConst; CARD16 aindex = pvt->aindex; receptorPtr rcp = pet->receptor; CARD32 bands = rcp[SRCt1].inFlo->bands; bandPtr sb1 = &rcp[SRCt1].band[0]; bandPtr aband = &rcp[aindex].band[0]; bandPtr bnd = &pet->emitter[0]; double *sconst = pvt->constant; mpBlendPvtPtr mpvt = (mpBlendPvtPtr) pet->private; pointer sr1, alpha, dst; CARD32 b, w; for(b = 0; b < bands; b++,sb1++,bnd++,sconst++, mpvt++, aband++) { BlendFloat scalefactor = *sconst * invaconst; /* Figure out if any data from the first band passes through unchanged */ if(sb1->format->width > aband->format->width) w = aband->format->width; else w = sb1->format->width; /* get pointers to the initial src-1, alpha, and dst scanlines */ sr1 = GetCurrentSrc(flo,pet,sb1); alpha = GetCurrentSrc(flo,pet,aband); dst = GetCurrentDst(flo,pet,bnd); /* continue while all is well and we have pointers */ while(!ferrCode(flo) && sr1 && alpha && dst && SyncDomain(flo,ped,bnd,FLUSH)) { INT32 run, currentx = 0; if (sr1 != dst) memcpy (dst, sr1, bnd->pitch); while ((run = GetRun(flo,pet,bnd)) && currentx < w ) { if (run > 0) { if (currentx + run > w ) /* Yuck, have to clip */ run = w - currentx; (*(mpvt->action))(currentx,run,sr1,alpha,dst,invaconst,scalefactor); currentx += run; } else currentx -= run; } /* get pointers to the next src-1 and dst scanlines */ sr1 = GetNextSrc(flo,pet,sb1,FLUSH); alpha = GetNextSrc(flo,pet,aband,FLUSH); dst = GetNextDst(flo,pet,bnd,FLUSH); } /* If alpha < sr1, pass remaining lines through untouched */ if(!sr1 && sb1->final) { /* when sr1 runs out, we're done */ } else if(!alpha && aband->final) { /* when alpha runs out, pass-thru sr1*/ pet->inSync = FALSE; /* No need to sync anymore */ BypassSrc(flo,pet,sb1); } else { /* both inputs still active, keep the scheduler up to date */ FreeData(flo,pet,sb1,sb1->current); FreeData(flo,pet,aband,aband->current); } } return(TRUE); } /* end MonoAlphaBlend */ /*------------------------------------------------------------------------ -- Case with three inputs: src1, src2, and alpha plane ------------------- ------------------------------------------------------------------------*/ static int DualAlphaBlend(flo,ped,pet) floDefPtr flo; peDefPtr ped; peTexPtr pet; { pBlendDefPtr pvt = (pBlendDefPtr)ped->elemPvt; BlendFloat invaconst = 1.0/pvt->alphaConst; CARD16 aindex = pvt->aindex; receptorPtr rcp = pet->receptor; CARD32 bands = rcp[SRCt1].inFlo->bands; bandPtr sb1 = &rcp[SRCt1].band[0]; bandPtr sb2 = &rcp[SRCt2].band[0]; bandPtr aband = &rcp[aindex].band[0]; bandPtr bnd = &pet->emitter[0]; mpBlendPvtPtr mpvt = (mpBlendPvtPtr) pet->private; pointer sr1, sr2, alpha, dst; CARD32 b, w; for(b = 0; b < bands; b++,sb1++,sb2++,bnd++,mpvt++,aband++) { /* Figure out if any data from the first band passes through unchanged */ /* Pass through if either sb2 or alpha runs out */ if(sb1->format->width > sb2->format->width || sb1->format->width > aband->format->width) w = (aband->format->width < sb2->format->width) ? aband->format->width : sb2->format->width; else w = sb1->format->width; /* get pointers to the initial src-1, src-2, and dst scanlines */ sr1 = GetCurrentSrc(flo,pet,sb1); sr2 = GetCurrentSrc(flo,pet,sb2); alpha = GetCurrentSrc(flo,pet,aband); dst = GetCurrentDst(flo,pet,bnd); /* continue while all is well and we have pointers */ while(!ferrCode(flo) && sr1 && sr2 && alpha && dst && SyncDomain(flo,ped,bnd,FLUSH)) { INT32 run, currentx = 0; if (sr1 != dst) memcpy (dst, sr1, bnd->pitch); while ((run = GetRun(flo,pet,bnd)) && currentx < w ) { if (run > 0) { if (currentx + run > w) /* Yuck, have to clip */ run = w - currentx; (*(mpvt->action)) (currentx,run,sr1,sr2,alpha,dst,invaconst); currentx += run; } else currentx -= run; } /* get pointers to the next src-1, src-2, and dst scanlines */ sr1 = GetNextSrc(flo,pet,sb1,FLUSH); sr2 = GetNextSrc(flo,pet,sb2,FLUSH); alpha = GetNextSrc(flo,pet,aband,FLUSH); dst = GetNextDst(flo,pet,bnd,FLUSH); } /* If alpha < sr1, pass remaining lines through untouched */ if(!sr1 && sb1->final) { /* when sr1 runs out, we're done */ DisableSrc(flo,pet,sb2,FLUSH); } else if( !sr2 && sb2->final || /* when other inputs out, pass sr1 */ !alpha && aband->final ) { pet->inSync = FALSE; /* No need to sync anymore */ if (sr2) { /* flush any remain sr2 */ DisableSrc(flo,pet,sb2,FLUSH); } BypassSrc(flo,pet,sb1); } else { /* both inputs still active, keep the scheduler up to date */ FreeData(flo,pet,sb1,sb1->current); FreeData(flo,pet,sb2,sb2->current); FreeData(flo,pet,aband,aband->current); } } return(TRUE); } /* end DualAlphaBlend */ /*------------------------------------------------------------------------ ------------------------ get rid of run-time stuff ----------------------- ------------------------------------------------------------------------*/ static int ResetBlend(flo,ped) floDefPtr flo; peDefPtr ped; { ResetReceptors(ped); ResetProcDomain(ped); ResetEmitter(ped); return(TRUE); } /* end ResetBlend */ /*------------------------------------------------------------------------ -------------------------- get rid of this element ----------------------- ------------------------------------------------------------------------*/ static int DestroyBlend(flo,ped) floDefPtr flo; peDefPtr ped; { /* get rid of the peTex structure */ if(ped->peTex) ped->peTex = (peTexPtr) XieFree(ped->peTex); /* zap this element's entry point vector */ ped->ddVec.create = (xieIntProc)NULL; ped->ddVec.initialize = (xieIntProc)NULL; ped->ddVec.activate = (xieIntProc)NULL; ped->ddVec.reset = (xieIntProc)NULL; ped->ddVec.destroy = (xieIntProc)NULL; return(TRUE); } /* end DestroyBlend */ /*------------------------------------------------------------------------ ------------------------MonoBlend action routines ---------------------- ------------------------------------------------------------------------*/ #define DOMono(fname,stype) \ static void fname(count,width,is,id,aconst2,offset) \ INT32 count, width; \ pointer is, id; \ BlendFloat aconst2, offset; \ { \ stype *sr1 = ((stype *)is) + count; \ stype *dst = ((stype *)id) + count; \ int i; \ for(i = 0; i < width; ++i) \ *dst++ = *sr1++ * aconst2 + offset; \ } DOMono(MonoR,RealPixel) DOMono(MonoQ,QuadPixel) DOMono(MonoP,PairPixel) DOMono(MonoB,BytePixel) /*------------------------------------------------------------------------ ------------------------DualBlend action routines ---------------------- ------------------------------------------------------------------------*/ #define DODual(fname,stype) \ static void fname(count,width,is1,is2,id,aconst1,aconst2) \ INT32 count,width; \ pointer is1, is2, id; \ BlendFloat aconst1, aconst2; \ { \ stype *sr1 = ((stype *)is1) + count; \ stype *sr2 = ((stype *)is2) + count; \ stype *dst = ((stype *)id) + count; \ int i; \ for(i = 0; i < width; ++i) \ *dst++ = *sr1++ * aconst2 + *sr2++ * aconst1; \ } DODual(DualR,RealPixel) DODual(DualQ,QuadPixel) DODual(DualP,PairPixel) DODual(DualB,BytePixel) /*------------------------------------------------------------------------ -------------------- MonoAlphaBlend action routines -------------------- ------------------------------------------------------------------------*/ #define DOMonoAlpha(fname,stype,atype) \ static void fname(count,width,is1,ia,id,iac,sf) \ INT32 count, width; \ pointer is1, ia, id; \ BlendFloat iac, sf; \ { \ stype *sr1 = ((stype *)is1) + count; \ stype *dst = ((stype *)id) + count; \ atype *alpha = ((atype *)ia) + count; \ int i; \ for(i = 0; i < width; ++i) { \ register BlendFloat ralpha = *alpha++; \ *dst++ = *sr1++ * ((BlendFloat)1.0 - ralpha * iac) + \ ralpha * sf; \ } \ } DOMonoAlpha(MonoAlphaRQ,RealPixel,QuadPixel) DOMonoAlpha(MonoAlphaRP,RealPixel,PairPixel) DOMonoAlpha(MonoAlphaRB,RealPixel,BytePixel) DOMonoAlpha(MonoAlphaQQ,QuadPixel,QuadPixel) DOMonoAlpha(MonoAlphaQP,QuadPixel,PairPixel) DOMonoAlpha(MonoAlphaQB,QuadPixel,BytePixel) DOMonoAlpha(MonoAlphaPQ,PairPixel,QuadPixel) DOMonoAlpha(MonoAlphaPP,PairPixel,PairPixel) DOMonoAlpha(MonoAlphaPB,PairPixel,BytePixel) DOMonoAlpha(MonoAlphaBQ,BytePixel,QuadPixel) DOMonoAlpha(MonoAlphaBP,BytePixel,PairPixel) DOMonoAlpha(MonoAlphaBB,BytePixel,BytePixel) /*------------------------------------------------------------------------ -------------------- DualAlphaBlend action routines -------------------- ------------------------------------------------------------------------*/ #define DODualAlpha(fname,stype,atype) \ static void fname(count,width,is1,is2,ia,id,iac) \ CARD32 count,width; \ pointer is1, is2, ia, id; \ BlendFloat iac; \ { \ stype *sr1 = ((stype *)is1) + count; \ stype *sr2 = ((stype *)is2) + count; \ atype *alpha = ((atype *)ia) + count; \ stype *dst = ((stype *)id) + count; \ int i; \ for(i = 0; i < width; ++i) { \ register BlendFloat ascale = *alpha++ * iac; \ *dst++ = *sr1++ * ((BlendFloat)1.0 - ascale) + \ *sr2++ * ascale; \ } \ } DODualAlpha(DualAlphaRQ,RealPixel,QuadPixel) DODualAlpha(DualAlphaRP,RealPixel,PairPixel) DODualAlpha(DualAlphaRB,RealPixel,BytePixel) DODualAlpha(DualAlphaQQ,QuadPixel,QuadPixel) DODualAlpha(DualAlphaQP,QuadPixel,PairPixel) DODualAlpha(DualAlphaQB,QuadPixel,BytePixel) DODualAlpha(DualAlphaPQ,PairPixel,QuadPixel) DODualAlpha(DualAlphaPP,PairPixel,PairPixel) DODualAlpha(DualAlphaPB,PairPixel,BytePixel) DODualAlpha(DualAlphaBQ,BytePixel,QuadPixel) DODualAlpha(DualAlphaBP,BytePixel,PairPixel) DODualAlpha(DualAlphaBB,BytePixel,BytePixel) /* end module mpblend.c */