Fix for bug #29046, the factor buffer input was not used correctly in curve nodes.

Curve Map exec function (for RGB curves) used a broken test condition for constant factor=1.0f eval. This must take the factor buffer into account, checking the factor vec for default value is not sufficient. These kinds of test should use a function interface, there are probably a lot more bugs like this hidden in the code.

1 files changed, 1 insertions, 1 deletions

diff --git a/source/blender/nodes/composite/nodes/node_composite_curves.c b/source/blender/nodes/composite/nodes/node_composite_curves.c
index 675710942fb..7faf10138ad 100644
--- a/source/blender/nodes/composite/nodes/node_composite_curves.c
+++ b/source/blender/nodes/composite/nodes/node_composite_curves.c
@@ -175,7 +175,7 @@ static void node_composit_exec_curve_rgb(void *UNUSED(data), bNode *node, bNodeS
 		
 		curvemapping_set_black_white(node->storage, in[2]->vec, in[3]->vec);
 		
-		if(in[0]->vec[0] == 1.0)
+		if(in[0]->data==NULL && in[0]->vec[0] == 1.0)
 			composit1_pixel_processor(node, stackbuf, in[1]->data, in[1]->vec, do_curves, CB_RGBA);
 		else
 			composit2_pixel_processor(node, stackbuf, in[1]->data, in[1]->vec, in[0]->data, in[0]->vec, do_curves_fac, CB_RGBA, CB_VAL);