diff --git a/yt_idv/shaders/slice_sample.frag.glsl b/yt_idv/shaders/slice_sample.frag.glsl
index 84bbbb1b..99d25681 100644
--- a/yt_idv/shaders/slice_sample.frag.glsl
+++ b/yt_idv/shaders/slice_sample.frag.glsl
@@ -62,5 +62,5 @@ void main()
     float map_sample = texture(bitmap_tex, tex_curr_pos).r;
     if (!(map_sample > 0.0)) discard;
 
-    output_color = texture(ds_tex, tex_curr_pos);
+    output_color = texture(ds_tex[0], tex_curr_pos);
 }
diff --git a/yt_idv/tests/test_yt_idv.py b/yt_idv/tests/test_yt_idv.py
index ae53e016..54085cce 100644
--- a/yt_idv/tests/test_yt_idv.py
+++ b/yt_idv/tests/test_yt_idv.py
@@ -68,7 +68,12 @@ def test_snapshots(osmesa_fake_amr, image_store):
 
 def test_slice(osmesa_fake_amr, image_store):
     osmesa_fake_amr.scene.components[0].render_method = "slice"
-    image_store(osmesa_fake_amr)
+    osmesa_fake_amr.scene.components[0].slice_position = (0.5, 0.5, 0.5)
+    for ax in [0, 1, 2]:
+        normal = [0.0, 0.0, 0.0]
+        normal[ax] = 1.0
+        osmesa_fake_amr.scene.components[0].slice_normal = tuple(normal)
+        image_store(osmesa_fake_amr)
     osmesa_fake_amr.scene.components[0].slice_normal = (1.0, 1.0, 0.0)
     osmesa_fake_amr.scene.components[0].slice_position = (0.5, 0.25, 0.5)
     image_store(osmesa_fake_amr)