diff --git a/examples/glTFViewer/Camera.inl b/examples/glTFViewer/Camera.inl
index ace6e60eb7..62134f40b9 100644
--- a/examples/glTFViewer/Camera.inl
+++ b/examples/glTFViewer/Camera.inl
@@ -54,7 +54,7 @@ class Camera {
             eye4 = glm::rotate(glm::mat4(), _azimuth, glm::vec3(0, 1, 0)) * eye4;
             _eyeDir = glm::vec3(eye4);
 
-            _view = glm::lookAt(_center + _eyeDir * _radius, _center, glm::vec3(0, 1, 0));
+            _view = glm::lookAt(_center + _eyeDir * _radius, _center, glm::vec3(0, -1, 0));
             _dirty = false;
         }
         float _azimuth;
diff --git a/examples/glTFViewer/glTFViewer.cpp b/examples/glTFViewer/glTFViewer.cpp
index 8e73ff988b..7e24cc113c 100644
--- a/examples/glTFViewer/glTFViewer.cpp
+++ b/examples/glTFViewer/glTFViewer.cpp
@@ -274,7 +274,8 @@ namespace {
         nxt::BindGroupLayout bindGroupLayout = utils::MakeBindGroupLayout(
             device, {
                         {0, nxt::ShaderStageBit::Vertex, nxt::BindingType::UniformBuffer},
-                        {1, nxt::ShaderStageBit::Fragment, nxt::BindingType::Sampler},
+                        {1, hasTexture ? nxt::ShaderStageBit::Fragment : kNoStages,
+                         nxt::BindingType::Sampler},
                         {2, hasTexture ? nxt::ShaderStageBit::Fragment : kNoStages,
                          nxt::BindingType::SampledTexture},
                     });
@@ -608,7 +609,7 @@ namespace {
         if (buttons[2] || (buttons[0] && buttons[1])) {
             camera.pan(-dX * 0.002f, dY * 0.002f);
         } else if (buttons[0]) {
-            camera.rotate(dX * -0.01f, dY * 0.01f);
+            camera.rotate(dX * 0.01f, dY * 0.01f);
         } else if (buttons[1]) {
             camera.zoom(dY * -0.005f);
         }