diff options
| author | Janne Karhu <jhkarh@gmail.com> | 2011-08-25 11:30:12 +0400 |
|---|---|---|
| committer | Janne Karhu <jhkarh@gmail.com> | 2011-08-25 11:30:12 +0400 |
| commit | 44f7a8aee2dcd664717b58f8e1265f832d67062d (patch) | |
| tree | 38f4e3f4fd53a183945057e07918ece822053c8a /source/blender/render/intern | |
| parent | 38398d200fd611d609a56933ec4406574f916855 (diff) | |
Fix for [#28239] Particles Billboard 3x3 Split Error.
* Patch by Alex Fraser.
Diffstat (limited to 'source/blender/render/intern')
| -rw-r--r-- | source/blender/render/intern/source/convertblender.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/source/blender/render/intern/source/convertblender.c b/source/blender/render/intern/source/convertblender.c index 7033ec27fc0..2f79560efd6 100644 --- a/source/blender/render/intern/source/convertblender.c +++ b/source/blender/render/intern/source/convertblender.c @@ -1345,8 +1345,11 @@ static void particle_billboard(Render *re, ObjectRen *obr, Material *ma, Particl VlakRen *vlr; MTFace *mtf; float xvec[3], yvec[3], zvec[3], bb_center[3]; + /* Number of tiles */ int totsplit = bb->uv_split * bb->uv_split; - float uvx = 0.0f, uvy = 0.0f, uvdx = 1.0f, uvdy = 1.0f, time = 0.0f; + int tile, x, y; + /* Tile offsets */ + float uvx = 0.0f, uvy = 0.0f, uvdx = 1.0f, uvdy = 1.0f, time = 0.0f; vlr= RE_findOrAddVlak(obr, obr->totvlak++); vlr->v1= RE_findOrAddVert(obr, obr->totvert++); @@ -1420,11 +1423,14 @@ static void particle_billboard(Render *re, ObjectRen *obr, Material *ma, Particl else if(bb->split_offset==PART_BB_OFF_RANDOM) time = (float)fmod(time + bb->random, 1.0f); - uvx = uvdx * floor((float)(bb->uv_split * bb->uv_split) * (float)fmod((double)time, (double)uvdx)); - uvy = uvdy * floor((1.0f - time) * (float)bb->uv_split); - - if(fmod(time, 1.0f / bb->uv_split) == 0.0f) - uvy -= uvdy; + /* Find the coordinates in tile space (integer), then convert to UV + * space (float). Note that Y is flipped. */ + tile = (int)((time + FLT_EPSILON10) * totsplit); + x = tile % bb->uv_split; + y = tile / bb->uv_split; + y = (bb->uv_split - 1) - y; + uvx = uvdx * x; + uvy = uvdy * y; } /* normal UVs */ |