Dont draw blocks what are outside the the view. - massive speedup with complex sequence's

1 files changed, 19 insertions, 2 deletions

diff --git a/source/blender/src/drawseq.c b/source/blender/src/drawseq.c
index c215a256b4e..8a6e80d5f01 100644
--- a/source/blender/src/drawseq.c
+++ b/source/blender/src/drawseq.c
@@ -823,7 +823,15 @@ void drawseqspace(ScrArea *sa, void *spacedata)
 	if(ed) {
 		seq= ed->seqbasep->first;
 		while(seq) {
-			if(seq->flag & SELECT); else drawseq(seq);
+			if (seq->flag & SELECT ||
+					seq->start > G.v2d->cur.xmax ||
+					seq->start+seq->len < G.v2d->cur.xmin ||
+					seq->machine+1.0 < G.v2d->cur.ymin || seq->machine > G.v2d->cur.ymax)
+			{
+				/* do nothing */
+			} else {
+				drawseq(seq);
+			}
 			seq= seq->next;
 		}
 	}
@@ -831,7 +839,16 @@ void drawseqspace(ScrArea *sa, void *spacedata)
 	if(ed) {
 		seq= ed->seqbasep->first;
 		while(seq) {
-			if(seq->flag & SELECT) drawseq(seq);
+			if (!(seq->flag & SELECT) ||
+					seq->start > G.v2d->cur.xmax ||
+					seq->start+seq->len < G.v2d->cur.xmin ||
+					seq->machine+1.0 < G.v2d->cur.ymin ||
+					seq->machine > G.v2d->cur.ymax)
+			{
+				/* do nothing */
+			} else {
+				drawseq(seq);
+			}
 			seq= seq->next;
 		}
 	}