diff --git a/libs/vkd3d/command.c b/libs/vkd3d/command.c
index 6df00a22..4a69ff53 100644
--- a/libs/vkd3d/command.c
+++ b/libs/vkd3d/command.c
@@ -5427,6 +5427,13 @@ static const struct vkd3d_format *vkd3d_fixup_clear_uav_uint_colour(struct d3d12
                     | ((colour->uint32[3] & 0x1) << 15);
             return vkd3d_get_format(device, DXGI_FORMAT_R16_UINT, false);
 
+        case DXGI_FORMAT_B4G4R4A4_UNORM:
+            colour->uint32[0] = (colour->uint32[2] & 0xf)
+                    | ((colour->uint32[1] & 0xf) << 4)
+                    | ((colour->uint32[0] & 0xf) << 8)
+                    | ((colour->uint32[3] & 0xf) << 12);
+            return vkd3d_get_format(device, DXGI_FORMAT_R16_UINT, false);
+
         default:
             return NULL;
     }
diff --git a/libs/vkd3d/device.c b/libs/vkd3d/device.c
index 88bce198..a394e3f7 100644
--- a/libs/vkd3d/device.c
+++ b/libs/vkd3d/device.c
@@ -89,6 +89,7 @@ static const struct vkd3d_optional_extension_info optional_device_extensions[] =
     VK_EXTENSION(KHR_SAMPLER_MIRROR_CLAMP_TO_EDGE, KHR_sampler_mirror_clamp_to_edge),
     VK_EXTENSION(KHR_TIMELINE_SEMAPHORE, KHR_timeline_semaphore),
     /* EXT extensions */
+    VK_EXTENSION(EXT_4444_FORMATS, EXT_4444_formats),
     VK_EXTENSION(EXT_CALIBRATED_TIMESTAMPS, EXT_calibrated_timestamps),
     VK_EXTENSION(EXT_CONDITIONAL_RENDERING, EXT_conditional_rendering),
     VK_EXTENSION(EXT_DEBUG_MARKER, EXT_debug_marker),
@@ -810,6 +811,7 @@ struct vkd3d_physical_device_info
     VkPhysicalDeviceVertexAttributeDivisorFeaturesEXT vertex_divisor_features;
     VkPhysicalDeviceTimelineSemaphoreFeaturesKHR timeline_semaphore_features;
     VkPhysicalDeviceMutableDescriptorTypeFeaturesEXT mutable_features;
+    VkPhysicalDevice4444FormatsFeaturesEXT formats4444_features;
 
     VkPhysicalDeviceFeatures2 features2;
 };
@@ -833,6 +835,7 @@ static void vkd3d_physical_device_info_init(struct vkd3d_physical_device_info *i
     VkPhysicalDeviceMaintenance3Properties *maintenance3_properties;
     VkPhysicalDeviceTransformFeedbackPropertiesEXT *xfb_properties;
     VkPhysicalDevice physical_device = device->vk_physical_device;
+    VkPhysicalDevice4444FormatsFeaturesEXT *formats4444_features;
     VkPhysicalDeviceTransformFeedbackFeaturesEXT *xfb_features;
     struct vkd3d_vulkan_info *vulkan_info = &device->vk_info;
 
@@ -851,6 +854,7 @@ static void vkd3d_physical_device_info_init(struct vkd3d_physical_device_info *i
     vertex_divisor_properties = &info->vertex_divisor_properties;
     timeline_semaphore_features = &info->timeline_semaphore_features;
     mutable_features = &info->mutable_features;
+    formats4444_features = &info->formats4444_features;
     xfb_features = &info->xfb_features;
     xfb_properties = &info->xfb_properties;
 
@@ -878,6 +882,8 @@ static void vkd3d_physical_device_info_init(struct vkd3d_physical_device_info *i
     vk_prepend_struct(&info->features2, timeline_semaphore_features);
     mutable_features->sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_MUTABLE_DESCRIPTOR_TYPE_FEATURES_EXT;
     vk_prepend_struct(&info->features2, mutable_features);
+    formats4444_features->sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_4444_FORMATS_FEATURES_EXT;
+    vk_prepend_struct(&info->features2, formats4444_features);
 
     if (vulkan_info->KHR_get_physical_device_properties2)
         VK_CALL(vkGetPhysicalDeviceFeatures2KHR(physical_device, &info->features2));
@@ -1667,6 +1673,8 @@ static HRESULT vkd3d_init_device_caps(struct d3d12_device *device,
     if (!physical_device_info->timeline_semaphore_features.timelineSemaphore)
         vulkan_info->KHR_timeline_semaphore = false;
 
+    physical_device_info->formats4444_features.formatA4B4G4R4 = VK_FALSE;
+
     vulkan_info->texel_buffer_alignment_properties = physical_device_info->texel_buffer_alignment_properties;
 
     if (get_spec_version(vk_extensions, count, VK_EXT_VERTEX_ATTRIBUTE_DIVISOR_EXTENSION_NAME) >= 3)
diff --git a/libs/vkd3d/utils.c b/libs/vkd3d/utils.c
index 6796c08c..58747342 100644
--- a/libs/vkd3d/utils.c
+++ b/libs/vkd3d/utils.c
@@ -118,6 +118,9 @@ static const struct vkd3d_format vkd3d_formats[] =
     {DXGI_FORMAT_BC7_UNORM_SRGB,        VK_FORMAT_BC7_SRGB_BLOCK,           1,  4, 4, 16, COLOR, 1},
 };
 
+static const struct vkd3d_format format_b4g4r4a4 =
+    {DXGI_FORMAT_B4G4R4A4_UNORM,        VK_FORMAT_A4R4G4B4_UNORM_PACK16_EXT, 2,  1, 1,  1, COLOR, 1};
+
 /* Each depth/stencil format is only compatible with itself in Vulkan. */
 static const struct vkd3d_format vkd3d_depth_stencil_formats[] =
 {
@@ -451,6 +454,11 @@ const struct vkd3d_format *vkd3d_get_format(const struct d3d12_device *device,
             return &vkd3d_formats[i];
     }
 
+    /* Do not check VkPhysicalDevice4444FormatsFeaturesEXT because apps
+     * should query format support, which returns more detailed info. */
+    if (dxgi_format == format_b4g4r4a4.dxgi_format && device->vk_info.EXT_4444_formats)
+        return &format_b4g4r4a4;
+
     return NULL;
 }
 
diff --git a/libs/vkd3d/vkd3d_private.h b/libs/vkd3d/vkd3d_private.h
index 43a4acfa..9e7d70c3 100644
--- a/libs/vkd3d/vkd3d_private.h
+++ b/libs/vkd3d/vkd3d_private.h
@@ -128,6 +128,7 @@ struct vkd3d_vulkan_info
     bool KHR_sampler_mirror_clamp_to_edge;
     bool KHR_timeline_semaphore;
     /* EXT device extensions */
+    bool EXT_4444_formats;
     bool EXT_calibrated_timestamps;
     bool EXT_conditional_rendering;
     bool EXT_debug_marker;
diff --git a/tests/d3d12.c b/tests/d3d12.c
index 319b4594..4d4de0ff 100644
--- a/tests/d3d12.c
+++ b/tests/d3d12.c
@@ -542,7 +542,6 @@ static bool is_typed_uav_format_supported(ID3D12Device *device, DXGI_FORMAT form
     format_support.Format = format;
     hr = ID3D12Device_CheckFeatureSupport(device, D3D12_FEATURE_FORMAT_SUPPORT,
             &format_support, sizeof(format_support));
-    todo
     ok(hr == S_OK, "Got unexpected hr %#x.\n", hr);
 
     return format_support.Support1 & D3D12_FORMAT_SUPPORT1_TYPED_UNORDERED_ACCESS_VIEW;
@@ -955,7 +954,7 @@ static void test_check_feature_support(void)
                 || format == DXGI_FORMAT_R8G8_B8G8_UNORM
                 || format == DXGI_FORMAT_G8R8_G8B8_UNORM
                 || format == DXGI_FORMAT_R10G10B10_XR_BIAS_A2_UNORM
-                || (DXGI_FORMAT_AYUV <= format && format <= DXGI_FORMAT_B4G4R4A4_UNORM);
+                || (DXGI_FORMAT_AYUV <= format && format <= DXGI_FORMAT_A8P8);
 
         memset(&format_info, 0, sizeof(format_info));
         format_info.Format = format;
@@ -5750,7 +5749,7 @@ static void test_clear_unordered_access_view_image(void)
         {DXGI_FORMAT_R11G11B10_FLOAT, 1, 1, 0, 0, 1, 0, {}, {1,       2, 3, 4}, 0x00c01001},
         {DXGI_FORMAT_B5G6R5_UNORM,    1, 1, 0, 0, 1, 0, {}, {1,       2, 3, 4}, 0x00000843},
         {DXGI_FORMAT_B5G5R5A1_UNORM,  1, 1, 0, 0, 1, 0, {}, {1,       2, 3, 1}, 0x00008443},
-        {DXGI_FORMAT_B4G4R4A4_UNORM,  1, 1, 0, 0, 1, 0, {}, {1,       2, 3, 1}, 0x00001123, false, true, true},
+        {DXGI_FORMAT_B4G4R4A4_UNORM,  1, 1, 0, 0, 1, 0, {}, {1,       2, 3, 1}, 0x00001123, false, false, true},
         /* Test float clears with formats. */
         {DXGI_FORMAT_R16G16_UNORM,    1, 1, 0, 0, 1, 0, {},
                 {0x3e800000 /* 0.25f */, 0x3f800000 /* 1.0f */, 0, 0}, 0xffff4000, true},
@@ -5771,7 +5770,7 @@ static void test_clear_unordered_access_view_image(void)
                 0xc104, true},
         {DXGI_FORMAT_B4G4R4A4_UNORM,  1, 1, 0, 0, 1, 0, {},
                 {0x3f000000 /* 0.5f */, 0x3f800000 /* 1.0f */, 0x40000000 /* 2.0f */, 0x40000000 /* -1.0f */},
-                0xf8ff, true, true, true},
+                0xf8ff, true, false, true},
     };
 
     static const struct