modules/pan: fmod the snapshot's dimensions

This assumption broke with the introduction of a default tile for
non-overlay mode.

1 files changed, 9 insertions, 4 deletions

diff --git a/src/modules/pan/pan.c b/src/modules/pan/pan.c
index ede0dff..d080366 100644
--- a/src/modules/pan/pan.c
+++ b/src/modules/pan/pan.c
@@ -76,16 +76,21 @@ static void pan_prepare_frame(til_module_context_t *context, til_stream_t *strea
 	pan_setup_t		*s = (pan_setup_t *)context->setup;
 	til_fb_fragment_t	*fragment = *fragment_ptr;
 	float			dt = (ticks - context->last_ticks) * .1f;
+	til_fb_fragment_t	*snapshot = &ctxt->tile;
+
+	if (fragment->cleared)
+		ctxt->snapshot = til_fb_fragment_snapshot(fragment_ptr, 0);
+
+	if (ctxt->snapshot)
+		snapshot = ctxt->snapshot;
 
 	ctxt->xoffset += dt * s->x;
-	ctxt->xoffset = fmodf(ctxt->xoffset, fragment->frame_width);
+	ctxt->xoffset = fmodf(ctxt->xoffset, snapshot->frame_width);
 	ctxt->yoffset += dt * s->y;
-	ctxt->yoffset = fmodf(ctxt->yoffset, fragment->frame_height);
+	ctxt->yoffset = fmodf(ctxt->yoffset, snapshot->frame_height);
 
 	*res_frame_plan = (til_frame_plan_t){ .fragmenter = til_fragmenter_slice_per_cpu_x16 };
 
-	if (fragment->cleared)
-		ctxt->snapshot = til_fb_fragment_snapshot(fragment_ptr, 0);
 }