System Information
Ubuntu 18.04
Blender Version
2.75-2.79b
Short description of error
Since v2.75, Blender Internal + Freestyle produces unintentional translucent strokes if full sample AA is enabled.
Exact steps for others to reproduce the error
Attached .blend file.
Workaround
I found that the first sample render of Freestyle is never merged into full sample image.
diff --git a/source/blender/render/intern/source/pipeline.c b/source/blender/render/intern/source/pipeline.c index 97971030dfb..4f2f8d67f45 100644 --- a/source/blender/render/intern/source/pipeline.c +++ b/source/blender/render/intern/source/pipeline.c @@ -2454,6 +2454,13 @@ static void do_merge_fullsample(Render *re, bNodeTree *ntree) BLI_rw_mutex_unlock(&re->resultmutex); render_result_uncrop(re1); } +#ifdef WITH_FREESTYLE + else if (re1->r.mode & R_EDGE_FRS) { + BLI_rw_mutex_lock(&re->resultmutex, THREAD_LOCK_WRITE); + composite_freestyle_renders(re1, 0); + BLI_rw_mutex_unlock(&re->resultmutex); + } +#endif ntreeCompositTagRender(re1->scene); /* ensure node gets exec to put buffers on stack */ } }
Though I'm not sure if this is correct solution, I can obtain desired result.