Bugfix #4535

A proper check for the error "No Camera" on rendering can only be made
after a renderwindow was initialized. The error menu then shows in the
render window, which appears to not work OK in windows ATI (again!).

So; I've moved the test to before the renderwindow is activated, this is
not a test checking on the entire render pipeline (like Composite nodes or
sequence strips). In case more complex setups cannot render, an error is
printed in the console only.

1 files changed, 9 insertions, 2 deletions

diff --git a/source/blender/render/intern/source/pipeline.c b/source/blender/render/intern/source/pipeline.c
index 74c92bcd30e..5de50c2f8c0 100644
--- a/source/blender/render/intern/source/pipeline.c
+++ b/source/blender/render/intern/source/pipeline.c
@@ -1458,9 +1458,9 @@ static void load_backbuffer(Render *re)
 /* main render routine, no compositing */
 static void do_render_fields_blur_3d(Render *re)
 {
-	/* only check for camera here */
+	/* also check for camera here */
 	if(re->scene->camera==NULL) {
-		re->error("No camera");
+		printf("ERROR: Cannot render, no camera\n");
 		G.afbreek= 1;
 		return;
 	}
@@ -1795,6 +1795,13 @@ static int is_rendering_allowed(Render *re)
 	if(re->scene->camera==NULL)
 		re->scene->camera= scene_find_camera(re->scene);
 	
+	if(!(re->r.scemode & (R_DOSEQ|R_DOCOMP))) {
+		if(re->scene->camera==NULL) {
+			re->error("No camera");
+			return 0;
+		}
+	}
+	
 	return 1;
 }