diff options
author | Campbell Barton <ideasman42@gmail.com> | 2010-06-29 17:20:11 +0400 |
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committer | Campbell Barton <ideasman42@gmail.com> | 2010-06-29 17:20:11 +0400 |
commit | 0795d1cccb1e0dcff59847523e6a57a299853bc8 (patch) | |
tree | 1da5a3ac60b026e0814126276900cc63910e9ef8 /source/blender/editors | |
parent | f48556f236b707b9f5f319d72ac630dc718ce1e3 (diff) |
image re-projection wasnt changing alpha values.
Diffstat (limited to 'source/blender/editors')
-rw-r--r-- | source/blender/editors/sculpt_paint/paint_image.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/source/blender/editors/sculpt_paint/paint_image.c b/source/blender/editors/sculpt_paint/paint_image.c index 6269b9c5e09..41908bbe388 100644 --- a/source/blender/editors/sculpt_paint/paint_image.c +++ b/source/blender/editors/sculpt_paint/paint_image.c @@ -3552,16 +3552,18 @@ static void blend_color_mix_float(float *cp, const float *cp1, const float *cp2, cp[3]= mfac*cp1[3] + fac*cp2[3]; } -static void blend_color_mix_rgb(unsigned char *cp, const unsigned char *cp1, const unsigned char *cp2, const int fac) +static void blend_color_mix_accum(unsigned char *cp, const unsigned char *cp1, const unsigned char *cp2, const int fac) { /* this and other blending modes previously used >>8 instead of /255. both are not equivalent (>>8 is /256), and the former results in rounding errors that can turn colors black fast after repeated blending */ const int mfac= 255-fac; + const int alpha= cp1[3] + ((fac * cp2[3]) / 255); cp[0]= (mfac*cp1[0]+fac*cp2[0])/255; cp[1]= (mfac*cp1[1]+fac*cp2[1])/255; cp[2]= (mfac*cp1[2]+fac*cp2[2])/255; + cp[3]= alpha > 255 ? 255 : alpha; } static void do_projectpaint_clone(ProjPaintState *ps, ProjPixel *projPixel, float *rgba, float alpha, float mask) @@ -3732,7 +3734,8 @@ static void *do_projectpaint_thread(void *ph_v) bicubic_interpolation_color(ps->reproject_ibuf, projPixel->newColor.ch, NULL, projPixel->projCoSS[0], projPixel->projCoSS[1]); if(projPixel->newColor.ch[3]) { mask = ((float)projPixel->mask)/65535.0f; - blend_color_mix_rgb(projPixel->pixel.ch_pt, projPixel->origColor.ch, projPixel->newColor.ch, (mask*projPixel->newColor.ch[3])); + blend_color_mix_accum(projPixel->pixel.ch_pt, projPixel->origColor.ch, projPixel->newColor.ch, (mask*projPixel->newColor.ch[3])); + } } } |