diff --git a/rvk/bindings.h b/rvk/bindings.h
index 29e699e..2b49cf1 100644
--- a/rvk/bindings.h
+++ b/rvk/bindings.h
@@ -266,10 +266,11 @@ template<Region R>
 struct Make {
     template<Binding B>
     void apply() {
+        u64 idx = bindings.length();
         bindings.push(VkDescriptorSetLayoutBinding{
-            .binding = static_cast<u32>(bindings.length()),
+            .binding = static_cast<u32>(idx),
             .descriptorType = B::type,
-            .descriptorCount = 1,
+            .descriptorCount = counts.length() ? counts[idx] : 1,
             .stageFlags = B::stages,
             .pImmutableSamplers = null,
         });
@@ -277,6 +278,7 @@ struct Make {
     }
     Vec<VkDescriptorSetLayoutBinding, Mregion<R>>& bindings;
     Vec<VkDescriptorBindingFlags, Mregion<R>>& flags;
+    Slice<u32> counts;
 };
 
 template<Region R, Binding... Binds>
@@ -293,11 +295,13 @@ struct Write {
 struct Binder {
     template<Type_List L>
         requires(Reflect::All<rvk::Is_Binding, L>)
-    static Descriptor_Set_Layout make(Arc<rvk::impl::Device, Alloc> device) {
+    static Descriptor_Set_Layout make(Arc<rvk::impl::Device, Alloc> device, Slice<u32> counts) {
+        constexpr u64 N = Reflect::List_Length<L>;
+        assert(counts.length() == N || counts.length() == 0);
         Region(R) {
-            Vec<VkDescriptorSetLayoutBinding, Mregion<R>> bindings(Reflect::List_Length<L>);
-            Vec<VkDescriptorBindingFlags, Mregion<R>> flags(Reflect::List_Length<L>);
-            Reflect::Iter<Make<R>, L>::apply(Make<R>{bindings, flags});
+            Vec<VkDescriptorSetLayoutBinding, Mregion<R>> bindings(N);
+            Vec<VkDescriptorBindingFlags, Mregion<R>> flags(N);
+            Reflect::Iter<Make<R>, L>::apply(Make<R>{bindings, flags, counts});
             return Descriptor_Set_Layout{move(device), bindings.slice(), flags.slice()};
         }
     }
diff --git a/rvk/descriptors.cpp b/rvk/descriptors.cpp
index 1f3e890..4ee3911 100644
--- a/rvk/descriptors.cpp
+++ b/rvk/descriptors.cpp
@@ -59,17 +59,18 @@ void Descriptor_Pool::release(Descriptor_Set& set) {
 }
 
 Descriptor_Set Descriptor_Pool::make(Descriptor_Set_Layout& layout, u64 frames_in_flight,
-                                     Slice<u32> counts) {
-    assert(counts.length() == 0 || counts.length() == layout.flag_count);
+                                     u32 variable_count) {
 
-    Vec<VkDescriptorSet, Alloc> sets;
+    auto sets = Vec<VkDescriptorSet, Alloc>::make(frames_in_flight);
 
     Region(R) {
-
+        Vec<u32, Mregion<R>> counts(frames_in_flight);
         Vec<VkDescriptorSetLayout, Mregion<R>> layouts(frames_in_flight);
-        for(u64 i = 0; i < frames_in_flight; ++i) layouts.push(layout);
 
-        sets.resize(frames_in_flight);
+        for(u64 i = 0; i < frames_in_flight; ++i) {
+            counts.push(variable_count);
+            layouts.push(layout);
+        }
 
         VkDescriptorSetVariableDescriptorCountAllocateInfo variable_count_info = {
             .sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_VARIABLE_DESCRIPTOR_COUNT_ALLOCATE_INFO,
@@ -79,7 +80,7 @@ Descriptor_Set Descriptor_Pool::make(Descriptor_Set_Layout& layout, u64 frames_i
 
         VkDescriptorSetAllocateInfo alloc_info = {
             .sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO,
-            .pNext = counts.length() ? &variable_count_info : null,
+            .pNext = &variable_count_info,
             .descriptorPool = pool,
             .descriptorSetCount = static_cast<u32>(frames_in_flight),
             .pSetLayouts = layouts.data(),
@@ -121,7 +122,7 @@ void Descriptor_Set::write(u64 frame_index, Slice<VkWriteDescriptorSet> writes)
 Descriptor_Set_Layout::Descriptor_Set_Layout(Arc<Device, Alloc> D,
                                              Slice<VkDescriptorSetLayoutBinding> bindings,
                                              Slice<VkDescriptorBindingFlags> flags)
-    : device(move(D)), flag_count(flags.length()) {
+    : device(move(D)) {
 
     assert(bindings.length() == flags.length() || flags.length() == 0);
 
@@ -158,8 +159,6 @@ Descriptor_Set_Layout& Descriptor_Set_Layout::operator=(Descriptor_Set_Layout&&
     device = move(src.device);
     layout = src.layout;
     src.layout = null;
-    flag_count = src.flag_count;
-    src.flag_count = 0;
     return *this;
 }
 
diff --git a/rvk/descriptors.h b/rvk/descriptors.h
index 74347b6..f92820b 100644
--- a/rvk/descriptors.h
+++ b/rvk/descriptors.h
@@ -32,7 +32,6 @@ struct Descriptor_Set_Layout {
 
     Arc<Device, Alloc> device;
     VkDescriptorSetLayout layout = null;
-    u64 flag_count = 0;
 
     friend struct Compositor;
     friend struct Binder;
@@ -78,7 +77,7 @@ struct Descriptor_Pool {
         return pool;
     }
 
-    Descriptor_Set make(Descriptor_Set_Layout& layout, u64 frames_in_flight, Slice<u32> counts);
+    Descriptor_Set make(Descriptor_Set_Layout& layout, u64 frames_in_flight, u32 variable_count);
 
 private:
     explicit Descriptor_Pool(Arc<Device, Alloc> device, u32 bindings_per_type, bool ray_tracing);
diff --git a/rvk/device.cpp b/rvk/device.cpp
index 8bcbcb6..84a48a6 100644
--- a/rvk/device.cpp
+++ b/rvk/device.cpp
@@ -4,7 +4,7 @@
 #include "commands.h"
 #include "device.h"
 
-static VkPhysicalDeviceFeatures2* baseline_features(bool ray_tracing) {
+static VkPhysicalDeviceFeatures2* baseline_features(bool ray_tracing, bool robustness) {
 
     static VkPhysicalDeviceRayTracingPositionFetchFeaturesKHR ray_position_fetch_features = {};
     ray_position_fetch_features.sType =
@@ -49,7 +49,7 @@ static VkPhysicalDeviceFeatures2* baseline_features(bool ray_tracing) {
     static VkPhysicalDeviceVulkan13Features vk13_features = {};
     vk13_features.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_VULKAN_1_3_FEATURES;
     vk13_features.pNext = &shader_clock_features;
-    vk13_features.robustImageAccess = VK_TRUE;
+    vk13_features.robustImageAccess = robustness;
     vk13_features.synchronization2 = VK_TRUE;
     vk13_features.dynamicRendering = VK_TRUE;
     vk13_features.maintenance4 = VK_TRUE;
@@ -97,8 +97,8 @@ static VkPhysicalDeviceFeatures2* baseline_features(bool ray_tracing) {
     static VkPhysicalDeviceRobustness2FeaturesEXT robust_features = {};
     robust_features.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_ROBUSTNESS_2_FEATURES_EXT;
     robust_features.pNext = &vk11_features;
-    robust_features.robustBufferAccess2 = VK_TRUE;
-    robust_features.robustImageAccess2 = VK_TRUE;
+    robust_features.robustBufferAccess2 = robustness;
+    robust_features.robustImageAccess2 = robustness;
     robust_features.nullDescriptor = VK_TRUE;
 
     static VkPhysicalDeviceMemoryPriorityFeaturesEXT memory_features = {};
@@ -109,7 +109,7 @@ static VkPhysicalDeviceFeatures2* baseline_features(bool ray_tracing) {
     static VkPhysicalDeviceFeatures2 features2 = {};
     features2.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_FEATURES_2;
     features2.pNext = &memory_features;
-    features2.features.robustBufferAccess = VK_TRUE;
+    features2.features.robustBufferAccess = robustness;
     features2.features.imageCubeArray = VK_TRUE;
     features2.features.geometryShader = VK_TRUE;
     features2.features.tessellationShader = VK_TRUE;
@@ -338,7 +338,8 @@ void Physical_Device::imgui() {
     }
 }
 
-Device::Device(Arc<Physical_Device, Alloc> P, VkSurfaceKHR surface, bool ray_tracing)
+Device::Device(Arc<Physical_Device, Alloc> P, VkSurfaceKHR surface, bool ray_tracing,
+               bool robustness)
     : physical_device(move(P)) {
 
     Profile::Time_Point start = Profile::timestamp();
@@ -450,7 +451,7 @@ Device::Device(Arc<Physical_Device, Alloc> P, VkSurfaceKHR surface, bool ray_tra
 
             {
                 VkDeviceCreateInfo dev_info = {};
-                dev_info.pNext = baseline_features(ray_tracing);
+                dev_info.pNext = baseline_features(ray_tracing, robustness);
                 dev_info.sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO;
                 dev_info.queueCreateInfoCount = static_cast<u32>(queue_infos.length());
                 dev_info.pQueueCreateInfos = queue_infos.data();
diff --git a/rvk/device.h b/rvk/device.h
index 7cacdeb..330d359 100644
--- a/rvk/device.h
+++ b/rvk/device.h
@@ -120,7 +120,7 @@ struct Device {
 
 private:
     explicit Device(Arc<Physical_Device, Alloc> physical_device, VkSurfaceKHR surface,
-                    bool ray_tracing);
+                    bool ray_tracing, bool robustness);
     friend struct Arc<Device, Alloc>;
     friend struct Vk;
     friend struct Compositor;
diff --git a/rvk/execute.h b/rvk/execute.h
index 432a4c6..ddcd230 100644
--- a/rvk/execute.h
+++ b/rvk/execute.h
@@ -17,8 +17,8 @@ using namespace rpp;
 
 template<Type_List L>
     requires(Reflect::All<Is_Binding, L>)
-Descriptor_Set_Layout make_layout() {
-    return impl::Binder::template make<L>(impl::get_device());
+Descriptor_Set_Layout make_layout(Slice<u32> counts) {
+    return impl::Binder::template make<L>(impl::get_device(), counts);
 }
 
 template<Type_List L, Binding... Binds>
diff --git a/rvk/rvk.cpp b/rvk/rvk.cpp
index 81e51b0..c224a70 100644
--- a/rvk/rvk.cpp
+++ b/rvk/rvk.cpp
@@ -159,8 +159,8 @@ Vk::Vk(Config config) {
 
     physical_device = instance->physical_device(instance->surface(), config.ray_tracing);
 
-    device =
-        Arc<Device, Alloc>::make(physical_device.dup(), instance->surface(), config.ray_tracing);
+    device = Arc<Device, Alloc>::make(physical_device.dup(), instance->surface(),
+                                      config.ray_tracing, config.robust_accesses);
 
     host_memory = Arc<Device_Memory, Alloc>::make(physical_device, device.dup(), Heap::host,
                                                   config.host_heap);
@@ -595,9 +595,9 @@ Opt<Binding_Table> make_table(Commands& cmds, impl::Pipeline& pipeline,
     return impl::singleton->make_table(cmds, pipeline, mapping);
 }
 
-Descriptor_Set make_set(Descriptor_Set_Layout& layout, Slice<u32> counts) {
+Descriptor_Set make_set(Descriptor_Set_Layout& layout, u32 variable_count) {
     return impl::singleton->descriptor_pool->make(layout, impl::singleton->state.frames_in_flight,
-                                                  counts);
+                                                  variable_count);
 }
 
 Box<Shader_Loader, Alloc> make_shader_loader() {
diff --git a/rvk/rvk.h b/rvk/rvk.h
index bf3dcda..9bdb50b 100644
--- a/rvk/rvk.h
+++ b/rvk/rvk.h
@@ -25,8 +25,10 @@ using Finalizer = FunctionN<16, void()>;
 
 struct Config {
     bool validation = true;
+    bool robust_accesses = true;
     bool ray_tracing = false;
     bool imgui = false;
+
     u32 frames_in_flight = 2;
     u32 descriptors_per_type = 128;
 
@@ -77,9 +79,9 @@ Opt<BLAS::Staged> make_blas(Buffer geometry, Vec<BLAS::Offsets, Alloc> offsets);
 
 template<Type_List L>
     requires(Reflect::All<Is_Binding, L>)
-Descriptor_Set_Layout make_layout();
+Descriptor_Set_Layout make_layout(Slice<u32> counts = Slice<u32>{});
 
-Descriptor_Set make_set(Descriptor_Set_Layout& layout, Slice<u32> counts = Slice<u32>{});
+Descriptor_Set make_set(Descriptor_Set_Layout& layout, u32 variable_count = 0);
 
 template<Type_List L, Binding... Binds>
     requires(Same<L, List<Binds...>>)
diff --git a/rvk/shader_loader.cpp b/rvk/shader_loader.cpp
index ca71e5b..7ea5804 100644
--- a/rvk/shader_loader.cpp
+++ b/rvk/shader_loader.cpp
@@ -80,6 +80,12 @@ void Shader_Loader::try_reload() {
     }
 }
 
+void Shader_Loader::trigger(Token token) {
+    assert(device.ok());
+    Thread::Lock lock{mutex};
+    callbacks.get(reloads.get(token))(*this);
+}
+
 void Shader_Loader::on_reload(Slice<Shader_Loader::Token> tokens,
                               FunctionN<16, void(Shader_Loader&)> callback) {
     assert(device.ok());
diff --git a/rvk/shader_loader.h b/rvk/shader_loader.h
index 404750e..96538cd 100644
--- a/rvk/shader_loader.h
+++ b/rvk/shader_loader.h
@@ -32,6 +32,7 @@ struct Shader_Loader {
 
     void try_reload();
     void on_reload(Slice<Token> shaders, FunctionN<16, void(Shader_Loader&)> callback);
+    void trigger(Token token);
 
 private:
     using Device = impl::Device;
diff --git a/rvk/swapchain.cpp b/rvk/swapchain.cpp
index 5052ecf..e019dd8 100644
--- a/rvk/swapchain.cpp
+++ b/rvk/swapchain.cpp
@@ -194,7 +194,7 @@ Compositor::Compositor(Arc<Device, Alloc> D, Arc<Swapchain, Alloc> S,
                        Arc<Descriptor_Pool, Alloc>& pool)
     : swapchain(move(S)), device(move(D)), v(compositor_v(device.dup())),
       f(compositor_f(device.dup())), ds_layout(device.dup(), compositor_ds_layout(), Slice<u32>{}),
-      ds(pool->make(ds_layout, swapchain->frame_count(), Slice<u32>{})),
+      ds(pool->make(ds_layout, swapchain->frame_count(), 0)),
       sampler(device.dup(), VK_FILTER_NEAREST, VK_FILTER_NEAREST),
       pipeline(Pipeline{device.dup(), compositor_pipeline_info(swapchain, ds_layout, v, f)}) {
     info("[rvk] Created compositor.");