Bugfix (own discovery!), using sequencer to render a scene updated the

depsgraph 2 times to often, also confusing particle drawing when disp %
is set.

And: little cleanup in render code (move includes in order)

source/blender/render/intern/source/ray.c

@@ -1948,7 +1948,7 @@ static float *sphere_sampler(int type, int resol, int xs, int ys)
 	} 
 	else {
 		float *sphere;
-		float cosf, sinf, cost, sint;
+		float cosfi, sinfi, cost, sint;
 		float ang, *vec1;
 		int a;
 		
@@ -1958,15 +1958,15 @@ static float *sphere_sampler(int type, int resol, int xs, int ys)
 			
 			// random rotation
 			ang= BLI_thread_frand(ys & 1);
-			sinf= sin(ang); cosf= cos(ang);
+			sinfi= sin(ang); cosfi= cos(ang);
 			ang= BLI_thread_frand(ys & 1);
 			sint= sin(ang); cost= cos(ang);
 			
 			vec= R.wrld.aosphere;
 			vec1= sphere;
 			for (a=0; a<tot; a++, vec+=3, vec1+=3) {
-				vec1[0]= cost*cosf*vec[0] - sinf*vec[1] + sint*cosf*vec[2];
-				vec1[1]= cost*sinf*vec[0] + cosf*vec[1] + sint*sinf*vec[2];
+				vec1[0]= cost*cosfi*vec[0] - sinfi*vec[1] + sint*cosfi*vec[2];
+				vec1[1]= cost*sinfi*vec[0] + cosfi*vec[1] + sint*sinfi*vec[2];
 				vec1[2]= -sint*vec[0] + cost*vec[2];			
 			}
 		}

source/blender/render/intern/source/rendercore.c

@@ -30,6 +30,10 @@
  * ***** END GPL/BL DUAL LICENSE BLOCK *****
  */
 
+/* system includes */
+#include <math.h>
+#include <string.h>
+#include <stdlib.h>
 
 /* External modules: */
 #include "MEM_guardedalloc.h"
@@ -65,12 +69,6 @@
 #include "jitter.h"
 #include "texture.h"
 
-/* system includes */
-#include <math.h>
-#include <string.h>
-#include <stdlib.h>
-
-
 /* own include */
 #include "rendercore.h"
 

source/blender/src/sequence.c

@@ -1957,7 +1957,7 @@ void do_build_seqar_cfra(ListBase *seqbase, Sequence ***seqar, int cfra)
 						int redisplay= (!G.background && !(R.flag & R_RENDERING));
 						
 						oldsce= G.scene;
-						set_scene_bg(seq->scene);
+						if(seq->scene!=G.scene) set_scene_bg(seq->scene);	/* set_scene does full dep updates */
 
 						/* prevent eternal loop */
 						doseq= G.scene->r.scemode & R_DOSEQ;
@@ -2003,7 +2003,7 @@ void do_build_seqar_cfra(ListBase *seqbase, Sequence ***seqar, int cfra)
 						R.rectot= rectot;
 						R.rectx=oldx; R.recty=oldy;
 						G.scene->r.scemode |= doseq;
-						set_scene_bg(oldsce);
+						if(seq->scene!=oldsce) set_scene_bg(oldsce);	/* set_scene does full dep updates */
 
 						/* restore!! */
 						R.rectx= seqrectx;