Made an attempt for fixing an instability issue regarding animation

rendering.

RE_BlenderFrame() and RE_BlenderAnim() are Blender's internal
top-level rendering API functions for a single frame and a series of
frames, respectively.  These functions rely on global variables to
keep render pipeline states.  Freestyle's stroke rendering was also
using RE_BlenderFrame to render a temporary scene of stroke meshes.
These nested calls of the top-level rendering API functions were
causing broken render pipeline states and eventually led to a crash.

This commit is intended to fix the issue, by introducing an rendering
API function RE_RenderFreestyleStrokes specifically used for stroke
rendering in Freestyle.  The new function does not do anything with
regard to the global variables in the rendering API implementation.

1 files changed, 1 insertions, 1 deletions

diff --git a/source/blender/freestyle/intern/blender_interface/BlenderStrokeRenderer.cpp b/source/blender/freestyle/intern/blender_interface/BlenderStrokeRenderer.cpp
index 30577287b72..f6798384f0a 100644
--- a/source/blender/freestyle/intern/blender_interface/BlenderStrokeRenderer.cpp
+++ b/source/blender/freestyle/intern/blender_interface/BlenderStrokeRenderer.cpp
@@ -341,6 +341,6 @@ Render* BlenderStrokeRenderer::RenderScene( Render *re ) {
 	
 	Render *freestyle_render = RE_NewRender(freestyle_scene->id.name, RE_SLOT_DEFAULT);
 
-	RE_BlenderFrame( freestyle_render, freestyle_scene, NULL, 1);
+	RE_RenderFreestyleStrokes(freestyle_render, freestyle_scene);
 	return freestyle_render;
 }