Fix crash on exit with Blender Internal baking and envmap render.

source/blender/render/intern/include/renderpipeline.h

@@ -41,6 +41,7 @@ struct RenderResult;
 struct RenderLayer *render_get_active_layer(struct Render *re, struct RenderResult *rr);
 float panorama_pixel_rot(struct Render *re);
 void render_update_anim_renderdata(struct Render *re, struct RenderData *rd);
+void render_copy_renderdata(struct RenderData *to, struct RenderData *from);
 
 #endif /* __RENDERPIPELINE_H__ */
 

source/blender/render/intern/source/convertblender.c

@@ -5871,11 +5871,7 @@ void RE_Database_Baking(Render *re, Main *bmain, Scene *scene, unsigned int lay,
 	re->lay= lay;
 
 	/* renderdata setup and exceptions */
-	BLI_freelistN(&re->r.layers);
-	BLI_freelistN(&re->r.views);
-	re->r = scene->r;
-	BLI_duplicatelist(&re->r.layers, &scene->r.layers);
-	BLI_duplicatelist(&re->r.views, &scene->r.views);
+	render_copy_renderdata(&re->r, &scene->r);
 
 	RE_init_threadcount(re);
 	

source/blender/render/intern/source/envmap.c

@@ -56,7 +56,8 @@
 /* this module */
 #include "render_types.h"
 #include "envmap.h"
-#include "renderdatabase.h" 
+#include "renderdatabase.h"
+#include "renderpipeline.h"
 #include "texture.h"
 #include "zbuf.h"
 
@@ -138,7 +139,7 @@ static Render *envmap_render_copy(Render *re, EnvMap *env)
 	envre->flag = re->flag;
 	
 	/* set up renderdata */
-	envre->r = re->r;
+	render_copy_renderdata(&envre->r, &re->r);
 	envre->r.mode &= ~(R_BORDER | R_PANORAMA | R_ORTHO | R_MBLUR);
 	BLI_listbase_clear(&envre->r.layers);
 	BLI_listbase_clear(&envre->r.views);

source/blender/render/intern/source/external_engine.c

@@ -452,18 +452,9 @@ RenderData *RE_engine_get_render_data(Render *re)
 /* Bake */
 void RE_bake_engine_set_engine_parameters(Render *re, Main *bmain, Scene *scene)
 {
-	curvemapping_free_data(&re->r.mblur_shutter_curve);
-
 	re->scene = scene;
 	re->main = bmain;
-	re->r = scene->r;
-
-	/* prevent crash when freeing the scene
-	 * but it potentially leaves unfreed memory blocks
-	 * not sure how to fix this yet -- dfelinto */
-	BLI_listbase_clear(&re->r.layers);
-	BLI_listbase_clear(&re->r.views);
-	curvemapping_copy_data(&re->r.mblur_shutter_curve, &scene->r.mblur_shutter_curve);
+	render_copy_renderdata(&re->r, &scene->r);
 }
 
 bool RE_bake_has_engine(Render *re)

source/blender/render/intern/source/pipeline.c

@@ -684,6 +684,19 @@ static void re_init_resolution(Render *re, Render *source,
 	re->clipcrop = 1.0f + 2.0f / (float)(re->winx > re->winy ? re->winy : re->winx);
 }
 
+void render_copy_renderdata(RenderData *to, RenderData *from)
+{
+	BLI_freelistN(&to->layers);
+	BLI_freelistN(&to->views);
+	curvemapping_free_data(&to->mblur_shutter_curve);
+
+	*to = *from;
+
+	BLI_duplicatelist(&to->layers, &from->layers);
+	BLI_duplicatelist(&to->views, &from->views);
+	curvemapping_copy_data(&to->mblur_shutter_curve, &from->mblur_shutter_curve);
+}
+
 /* what doesn't change during entire render sequence */
 /* disprect is optional, if NULL it assumes full window render */
 void RE_InitState(Render *re, Render *source, RenderData *rd,
@@ -697,13 +710,7 @@ void RE_InitState(Render *re, Render *source, RenderData *rd,
 	re->i.starttime = PIL_check_seconds_timer();
 
 	/* copy render data and render layers for thread safety */
-	BLI_freelistN(&re->r.layers);
-	BLI_freelistN(&re->r.views);
-	curvemapping_free_data(&re->r.mblur_shutter_curve);
-	re->r = *rd;
-	BLI_duplicatelist(&re->r.layers, &rd->layers);
-	BLI_duplicatelist(&re->r.views, &rd->views);
-	curvemapping_copy_data(&re->r.mblur_shutter_curve, &rd->mblur_shutter_curve);
+	render_copy_renderdata(&re->r, rd);
 
 	if (source) {
 		/* reuse border flags from source renderer */