Commit: 322f86d6b330ebeb1da5c1f527714745dc901460
Author: Joshua Leung
Date: Thu Mar 24 13:02:22 2016 +1300
Branches: master
https://developer.blender.org/rB322f86d6b330ebeb1da5c1f527714745dc901460
Fix T47896: Scripted Expression string length limit is too short for some
autogenerated expressions
While most scripted expressions are quite short (e.g. "var" or "frame + 1"),
those that are autogenerated by scripts (to take into account a wide range of
factors)
may require a bit more headroom to operate in.
By doubling the maximum length here, we now make it possible to combine up to 38
3-letter variables in some linear combination (with all factors expressed to 4
dp).
That should be more than enough for anyone or anything for quite a while!
Unfortunately, this does increase memory consumption for drivers across the
board.
===================================================================
M source/blender/makesdna/DNA_anim_types.h
===================================================================
diff --git a/source/blender/makesdna/DNA_anim_types.h
b/source/blender/makesdna/DNA_anim_types.h
index e41ca93..d80b509 100644
--- a/source/blender/makesdna/DNA_anim_types.h
+++ b/source/blender/makesdna/DNA_anim_types.h
@@ -374,7 +374,7 @@ typedef struct ChannelDriver {
/* python expression to execute (may call functions defined in an
accessory file)
* which relates the target 'variables' in some way to yield a single
usable value
*/
- char expression[256]; /* expression to compile for evaluation */
+ char expression[512]; /* expression to compile for evaluation */
void *expr_comp; /* PyObject - compiled expression,
don't save this */
float curval; /* result of previous evaluation */
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