1 files changed, 6 insertions, 0 deletions
diff --git a/mg2d.c b/mg2d.c
index 58886cd..dec0c18 100644
--- a/mg2d.c
+++ b/mg2d.c
@@ -1495,6 +1495,12 @@ static int mg_levels_alloc(MG2DContext *ctx)
 
     int ret = 0;
 
+    if (ctx->adaptive_step) {
+        mg2di_log(&priv->logger, MG2D_LOG_ERROR,
+                  "Adaptive stepping not supported.\n");
+        return -EINVAL;
+    }
+
     /* compute the levels geometries/partitioning */
     ret = mg_dh_init(&priv->dh, priv->dg, ctx->step, ctx->max_levels);
     if (ret < 0) {