diff options
Diffstat (limited to 'source/blender/imbuf/intern/filter.c')
| -rw-r--r-- | source/blender/imbuf/intern/filter.c | 174 |
1 files changed, 80 insertions, 94 deletions
diff --git a/source/blender/imbuf/intern/filter.c b/source/blender/imbuf/intern/filter.c index 76ed0e2c61f..3ee05da15c9 100644 --- a/source/blender/imbuf/intern/filter.c +++ b/source/blender/imbuf/intern/filter.c @@ -29,14 +29,13 @@ * $Id$ */ -#include "BLI_blenlib.h" +#include "BKE_utildefines.h" -#include "imbuf.h" -#include "imbuf_patch.h" #include "IMB_imbuf_types.h" #include "IMB_imbuf.h" #include "IMB_filter.h" +#include "imbuf.h" /************************************************************************/ /* FILTERS */ @@ -371,114 +370,101 @@ void IMB_filter_extend(struct ImBuf *ibuf, char *mask) } } -#if 0 void IMB_makemipmap(ImBuf *ibuf, int use_filter) { - ImBuf *hbuf= ibuf; - int minsize, curmap=0; - - minsize= ibuf->x<ibuf->y?ibuf->x:ibuf->y; - - while(minsize>10 && curmap<IB_MIPMAP_LEVELS) { + ImBuf *hbuf = ibuf; + int curmap = 0; + + ibuf->miptot= 1; + + while(curmap < IB_MIPMAP_LEVELS) { if(use_filter) { ImBuf *nbuf= IMB_allocImBuf(hbuf->x, hbuf->y, 32, IB_rect, 0); IMB_filterN(nbuf, hbuf); - ibuf->mipmap[curmap]= IMB_onehalf(nbuf); + ibuf->mipmap[curmap] = IMB_onehalf(nbuf); IMB_freeImBuf(nbuf); } - else { - ibuf->mipmap[curmap]= IMB_onehalf(hbuf); - } + else + ibuf->mipmap[curmap] = IMB_onehalf(hbuf); + + ibuf->miptot= curmap+2; hbuf= ibuf->mipmap[curmap]; - + hbuf->miplevel= curmap+1; + + if(!hbuf || (hbuf->x == 1 && hbuf->y == 1)) + break; + curmap++; - minsize= hbuf->x<hbuf->y?hbuf->x:hbuf->y; } } -#endif -void IMB_makemipmap(ImBuf *ibuf, int use_filter, int SAT) +ImBuf *IMB_getmipmap(ImBuf *ibuf, int level) { - if (SAT) { - // to maximize precision subtract image average, use intermediate double SAT, - // only convert to float at the end - const double dv = 1.0/255.0; - double avg[4] = {0, 0, 0, 0}; - const int x4 = ibuf->x << 2; - int x, y, i; - ImBuf* sbuf = IMB_allocImBuf(ibuf->x, ibuf->y, 32, IB_rectfloat, 0); - double *satp, *satbuf = MEM_callocN(sizeof(double)*ibuf->x*ibuf->y*4, "tmp SAT buf"); - const double mf = ibuf->x*ibuf->y; - float* fp; - ibuf->mipmap[0] = sbuf; - if (ibuf->rect_float) { - fp = ibuf->rect_float; - for (y=0; y<ibuf->y; ++y) - for (x=0; x<ibuf->x; ++x) { - avg[0] += *fp++; - avg[1] += *fp++; - avg[2] += *fp++; - avg[3] += *fp++; - } - } - else { - char* cp = (char*)ibuf->rect; - for (y=0; y<ibuf->y; ++y) - for (x=0; x<ibuf->x; ++x) { - avg[0] += *cp++ * dv; - avg[1] += *cp++ * dv; - avg[2] += *cp++ * dv; - avg[3] += *cp++ * dv; - } - } - avg[0] /= mf; - avg[1] /= mf; - avg[2] /= mf; - avg[3] /= mf; - for (y=0; y<ibuf->y; ++y) - for (x=0; x<ibuf->x; ++x) { - const unsigned int p = (x + y*ibuf->x) << 2; - char* cp = (char*)ibuf->rect + p; - fp = ibuf->rect_float + p; - satp = satbuf + p; - for (i=0; i<4; ++i, ++cp, ++fp, ++satp) { - double sv = (ibuf->rect_float ? (double)*fp : (double)(*cp)*dv) - avg[i]; - if (x > 0) sv += satp[-4]; - if (y > 0) sv += satp[-x4]; - if (x > 0 && y > 0) sv -= satp[-x4 - 4]; - *satp = sv; - } - } - fp = sbuf->rect_float; - satp = satbuf; - for (y=0; y<ibuf->y; ++y) - for (x=0; x<ibuf->x; ++x) { - *fp++ = (float)*satp++; - *fp++ = (float)*satp++; - *fp++ = (float)*satp++; - *fp++ = (float)*satp++; + CLAMP(level, 0, ibuf->miptot-1); + return (level == 0)? ibuf: ibuf->mipmap[level-1]; +} + +void IMB_premultiply_rect(unsigned int *rect, int depth, int w, int h) +{ + char *cp; + int x, y, val; + + if(depth == 24) { /* put alpha at 255 */ + cp= (char *)(rect); + + for(y=0; y<h; y++) + for(x=0; x<w; x++, cp+=4) + cp[3]= 255; + } + else { + cp= (char *)(rect); + + for(y=0; y<h; y++) { + for(x=0; x<w; x++, cp+=4) { + val= cp[3]; + cp[0]= (cp[0]*val)>>8; + cp[1]= (cp[1]*val)>>8; + cp[2]= (cp[2]*val)>>8; } - MEM_freeN(satbuf); - fp = &sbuf->rect_float[(sbuf->x - 1 + (sbuf->y - 1)*sbuf->x) << 2]; - fp[0] = avg[0]; - fp[1] = avg[1]; - fp[2] = avg[2]; - fp[3] = avg[3]; + } + } +} + +void IMB_premultiply_rect_float(float *rect_float, int depth, int w, int h) +{ + float val, *cp; + int x, y; + + if(depth==24) { /* put alpha at 1.0 */ + cp= rect_float; + + for(y=0; y<h; y++) + for(x=0; x<w; x++, cp+=4) + cp[3]= 1.0; } else { - ImBuf *hbuf = ibuf; - int curmap = 0; - while (curmap < IB_MIPMAP_LEVELS) { - if (use_filter) { - ImBuf *nbuf= IMB_allocImBuf(hbuf->x, hbuf->y, 32, IB_rect, 0); - IMB_filterN(nbuf, hbuf); - ibuf->mipmap[curmap] = IMB_onehalf(nbuf); - IMB_freeImBuf(nbuf); + cp= rect_float; + for(y=0; y<h; y++) { + for(x=0; x<w; x++, cp+=4) { + val= cp[3]; + cp[0]= cp[0]*val; + cp[1]= cp[1]*val; + cp[2]= cp[2]*val; } - else ibuf->mipmap[curmap] = IMB_onehalf(hbuf); - hbuf = ibuf->mipmap[curmap]; - if (hbuf->x == 1 && hbuf->y == 1) break; - curmap++; } } + } + +void IMB_premultiply_alpha(ImBuf *ibuf) +{ + if(ibuf==NULL) + return; + + if(ibuf->rect) + IMB_premultiply_rect(ibuf->rect, ibuf->depth, ibuf->x, ibuf->y); + + if(ibuf->rect_float) + IMB_premultiply_rect_float(ibuf->rect_float, ibuf->depth, ibuf->x, ibuf->y); +} + |