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Drivers: ensure Python expressions are cached with copy-on-write. 

Store the compiled expressions on the original driver.

Ref T55442.
This commit is contained in:
Brecht Van Lommel 2018-06-11 20:00:03 +02:00
parent 2bbe0c4ef4
commit 3816502b7c
Notes: blender-bot 2024-03-25 12:30:38 +01:00 
Referenced by issue #55442, slow translate/rotate manipulator
7 changed files with 42 additions and 39 deletions
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6
source/blender/blenkernel/BKE_fcurve.h
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@ -108,7 +108,8 @@ bool driver_get_variable_property(
struct ChannelDriver *driver, struct DriverTarget *dtar,
struct PointerRNA *r_ptr, struct PropertyRNA **r_prop, int *r_index);
float evaluate_driver(struct PathResolvedRNA *anim_rna, struct ChannelDriver *driver, const float evaltime);
float evaluate_driver(struct PathResolvedRNA *anim_rna, struct ChannelDriver *driver,
struct ChannelDriver *driver_orig, const float evaltime);
/* ************** F-Curve Modifiers *************** */
@ -282,7 +283,8 @@ void correct_bezpart(float v1[2], float v2[2], float v3[2], float v4[2]);
/* evaluate fcurve */
float evaluate_fcurve(struct FCurve *fcu, float evaltime);
float evaluate_fcurve_driver(struct PathResolvedRNA *anim_rna, struct FCurve *fcu, float evaltime);
float evaluate_fcurve_driver(struct PathResolvedRNA *anim_rna, struct FCurve *fcu,
struct ChannelDriver *driver_orig, float evaltime);
/* evaluate fcurve and store value */
float calculate_fcurve(struct PathResolvedRNA *anim_rna, struct FCurve *fcu, float evaltime);

2
source/blender/blenkernel/intern/anim_sys.c
View File

@ -3017,7 +3017,7 @@ void BKE_animsys_eval_driver(Depsgraph *depsgraph,
PathResolvedRNA anim_rna;
if (animsys_store_rna_setting(&id_ptr, NULL, fcu->rna_path, fcu->array_index, &anim_rna)) {
const float ctime = DEG_get_ctime(depsgraph);
const float curval = calculate_fcurve(&anim_rna, fcu, ctime);
const float curval = evaluate_fcurve_driver(&anim_rna, fcu, driver_orig, ctime);
ok = animsys_write_rna_setting(&anim_rna, curval);
if (ok && DEG_is_active(depsgraph)) {
animsys_write_orig_anim_rna(&id_ptr, NULL, fcu, curval);

17
source/blender/blenkernel/intern/fcurve.c
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@ -1922,13 +1922,14 @@ float driver_get_variable_value(ChannelDriver *driver, DriverVar *dvar)
/* Evaluate an Channel-Driver to get a 'time' value to use instead of "evaltime"
* - "evaltime" is the frame at which F-Curve is being evaluated
* - has to return a float value
* - driver_orig is where we cache Python expressions, in case of COW
*/
float evaluate_driver(PathResolvedRNA *anim_rna, ChannelDriver *driver, const float evaltime)
float evaluate_driver(PathResolvedRNA *anim_rna, ChannelDriver *driver, ChannelDriver *driver_orig, const float evaltime)
{
DriverVar *dvar;
/* check if driver can be evaluated */
if (driver->flag & DRIVER_FLAG_INVALID)
if (driver_orig->flag & DRIVER_FLAG_INVALID)
return 0.0f;
switch (driver->type) {
@ -1998,8 +1999,8 @@ float evaluate_driver(PathResolvedRNA *anim_rna, ChannelDriver *driver, const fl
{
#ifdef WITH_PYTHON
/* check for empty or invalid expression */
if ( (driver->expression[0] == '\0') ||
(driver->flag & DRIVER_FLAG_INVALID) )
if ( (driver_orig->expression[0] == '\0') ||
(driver_orig->flag & DRIVER_FLAG_INVALID) )
{
driver->curval = 0.0f;
}
@ -2009,7 +2010,7 @@ float evaluate_driver(PathResolvedRNA *anim_rna, ChannelDriver *driver, const fl
*/
BLI_mutex_lock(&python_driver_lock);
driver->curval = BPY_driver_exec(anim_rna, driver, evaltime);
driver->curval = BPY_driver_exec(anim_rna, driver, driver_orig, evaltime);
BLI_mutex_unlock(&python_driver_lock);
}
@ -2705,7 +2706,7 @@ float evaluate_fcurve(FCurve *fcu, float evaltime)
return evaluate_fcurve_ex(fcu, evaltime, 0.0);
}
float evaluate_fcurve_driver(PathResolvedRNA *anim_rna, FCurve *fcu, float evaltime)
float evaluate_fcurve_driver(PathResolvedRNA *anim_rna, FCurve *fcu, ChannelDriver *driver_orig, float evaltime)
{
BLI_assert(fcu->driver != NULL);
float cvalue = 0.0f;
@ -2715,7 +2716,7 @@ float evaluate_fcurve_driver(PathResolvedRNA *anim_rna, FCurve *fcu, float evalt
*/
if (fcu->driver) {
/* evaltime now serves as input for the curve */
evaltime = evaluate_driver(anim_rna, fcu->driver, evaltime);
evaltime = evaluate_driver(anim_rna, fcu->driver, driver_orig, evaltime);
/* only do a default 1-1 mapping if it's unlikely that anything else will set a value... */
if (fcu->totvert == 0) {
@ -2762,7 +2763,7 @@ float calculate_fcurve(PathResolvedRNA *anim_rna, FCurve *fcu, float evaltime)
/* calculate and set curval (evaluates driver too if necessary) */
float curval;
if (fcu->driver) {
curval = evaluate_fcurve_driver(anim_rna, fcu, evaltime);
curval = evaluate_fcurve_driver(anim_rna, fcu, fcu->driver, evaltime);
}
else {
curval = evaluate_fcurve(fcu, evaltime);

2
source/blender/editors/animation/keyframing.c
View File

@ -954,7 +954,7 @@ bool insert_keyframe_direct(Depsgraph *depsgraph, ReportList *reports, PointerRN
if (RNA_path_resolved_create(&ptr, prop, fcu->array_index, &anim_rna)) {
/* for making it easier to add corrective drivers... */
cfra = evaluate_driver(&anim_rna, fcu->driver, cfra);
cfra = evaluate_driver(&anim_rna, fcu->driver, fcu->driver, cfra);
}
else {
cfra = 0.0f;

3
source/blender/python/BPY_extern.h
View File

@ -87,7 +87,8 @@ void BPY_modules_load_user(struct bContext *C);
void BPY_app_handlers_reset(const short do_all);
void BPY_driver_reset(void);
float BPY_driver_exec(struct PathResolvedRNA *anim_rna, struct ChannelDriver *driver, const float evaltime);
float BPY_driver_exec(struct PathResolvedRNA *anim_rna, struct ChannelDriver *driver,
struct ChannelDriver *driver_orig, const float evaltime);
void BPY_DECREF(void *pyob_ptr); /* Py_DECREF() */
void BPY_DECREF_RNA_INVALIDATE(void *pyob_ptr);

44
source/blender/python/intern/bpy_driver.c
View File

@ -48,6 +48,8 @@
#include "bpy_driver.h"
#include "BPY_extern.h"
extern void BPY_update_rna_module(void);
#define USE_RNA_AS_PYOBJECT
@ -196,8 +198,12 @@ static void pydriver_error(ChannelDriver *driver)
* (new)note: checking if python is running is not threadsafe [#28114]
* now release the GIL on python operator execution instead, using
* PyEval_SaveThread() / PyEval_RestoreThread() so we don't lock up blender.
*
* For copy-on-write we always cache expressions and write errors in the
* original driver, otherwise these would get freed while editing. Due to
* the GIL this is thread-safe.
*/
float BPY_driver_exec(struct PathResolvedRNA *anim_rna, ChannelDriver *driver, const float evaltime)
float BPY_driver_exec(struct PathResolvedRNA *anim_rna, ChannelDriver *driver, ChannelDriver *driver_orig, const float evaltime)
{
PyObject *driver_vars = NULL;
PyObject *retval = NULL;
@ -213,7 +219,7 @@ float BPY_driver_exec(struct PathResolvedRNA *anim_rna, ChannelDriver *driver, c
int i;
/* get the py expression to be evaluated */
expr = driver->expression;
expr = driver_orig->expression;
if (expr[0] == '\0')
return 0.0f;
@ -249,47 +255,47 @@ float BPY_driver_exec(struct PathResolvedRNA *anim_rna, ChannelDriver *driver, c
/* update global namespace */
bpy_pydriver_namespace_update_frame(evaltime);
if (driver->flag & DRIVER_FLAG_USE_SELF) {
if (driver_orig->flag & DRIVER_FLAG_USE_SELF) {
bpy_pydriver_namespace_update_self(anim_rna);
}
else {
bpy_pydriver_namespace_clear_self();
}
if (driver->expr_comp == NULL)
driver->flag |= DRIVER_FLAG_RECOMPILE;
if (driver_orig->expr_comp == NULL)
driver_orig->flag |= DRIVER_FLAG_RECOMPILE;
/* compile the expression first if it hasn't been compiled or needs to be rebuilt */
if (driver->flag & DRIVER_FLAG_RECOMPILE) {
Py_XDECREF(driver->expr_comp);
driver->expr_comp = PyTuple_New(2);
if (driver_orig->flag & DRIVER_FLAG_RECOMPILE) {
Py_XDECREF(driver_orig->expr_comp);
driver_orig->expr_comp = PyTuple_New(2);
expr_code = Py_CompileString(expr, "<bpy driver>", Py_eval_input);
PyTuple_SET_ITEM(((PyObject *)driver->expr_comp), 0, expr_code);
PyTuple_SET_ITEM(((PyObject *)driver_orig->expr_comp), 0, expr_code);
driver->flag &= ~DRIVER_FLAG_RECOMPILE;
driver->flag |= DRIVER_FLAG_RENAMEVAR; /* maybe this can be removed but for now best keep until were sure */
driver_orig->flag &= ~DRIVER_FLAG_RECOMPILE;
driver_orig->flag |= DRIVER_FLAG_RENAMEVAR; /* maybe this can be removed but for now best keep until were sure */
}
else {
expr_code = PyTuple_GET_ITEM(((PyObject *)driver->expr_comp), 0);
expr_code = PyTuple_GET_ITEM(((PyObject *)driver_orig->expr_comp), 0);
}
if (driver->flag & DRIVER_FLAG_RENAMEVAR) {
if (driver_orig->flag & DRIVER_FLAG_RENAMEVAR) {
/* may not be set */
expr_vars = PyTuple_GET_ITEM(((PyObject *)driver->expr_comp), 1);
expr_vars = PyTuple_GET_ITEM(((PyObject *)driver_orig->expr_comp), 1);
Py_XDECREF(expr_vars);
expr_vars = PyTuple_New(BLI_listbase_count(&driver->variables));
PyTuple_SET_ITEM(((PyObject *)driver->expr_comp), 1, expr_vars);
expr_vars = PyTuple_New(BLI_listbase_count(&driver_orig->variables));
PyTuple_SET_ITEM(((PyObject *)driver_orig->expr_comp), 1, expr_vars);
for (dvar = driver->variables.first, i = 0; dvar; dvar = dvar->next) {
for (dvar = driver_orig->variables.first, i = 0; dvar; dvar = dvar->next) {
PyTuple_SET_ITEM(expr_vars, i++, PyUnicode_FromString(dvar->name));
}
driver->flag &= ~DRIVER_FLAG_RENAMEVAR;
driver_orig->flag &= ~DRIVER_FLAG_RENAMEVAR;
}
else {
expr_vars = PyTuple_GET_ITEM(((PyObject *)driver->expr_comp), 1);
expr_vars = PyTuple_GET_ITEM(((PyObject *)driver_orig->expr_comp), 1);
}
/* add target values to a dict that will be used as '__locals__' dict */

7
source/blender/python/intern/bpy_driver.h
View File

@ -27,14 +27,7 @@
#ifndef __BPY_DRIVER_H__
#define __BPY_DRIVER_H__
struct ChannelDriver;
struct PathResolvedRNA;
int bpy_pydriver_create_dict(void);
extern PyObject *bpy_pydriver_Dict;
/* externals */
float BPY_driver_exec(struct PathResolvedRNA *anim_rna, struct ChannelDriver *driver, const float evaltime);
void BPY_driver_reset(void);
#endif /* __BPY_DRIVER_H__ */