[PATCH v3 0/1] MR523: vkd3d: Use mutable descriptors if available.

[Conor McCarthy (＠cmccarthy)]

--
  v3: vkd3d: Use mutable descriptors if available.
 
https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/523

[PATCH v3 1/1] vkd3d: Use mutable descriptors if available.

[Conor McCarthy]

From: Conor McCarthy <cmccarthy(a)codeweavers.com>

The mutable descriptor type allows six descriptor sets to be replaced
with one set for CBV/SRV/UAV heaps.
---
 libs/vkd3d/command.c       |  3 ++-
 libs/vkd3d/device.c        | 40 +++++++++++++++++++++++++++++++++++++-
 libs/vkd3d/resource.c      | 22 +++++++++++++++++----
 libs/vkd3d/state.c         | 15 +++++++++++++-
 libs/vkd3d/vkd3d_private.h |  1 +
 5 files changed, 74 insertions(+), 7 deletions(-)

diff --git a/libs/vkd3d/command.c b/libs/vkd3d/command.c
index 15c8317b1..e9477c957 100644
--- a/libs/vkd3d/command.c
+++ b/libs/vkd3d/command.c
@@ -3266,7 +3266,8 @@ static void d3d12_command_list_bind_descriptor_heap(struct d3d12_command_list *l
     {
         VkDescriptorSet vk_descriptor_set = heap->vk_descriptor_sets[set].vk_set;
 
-        if (!vk_descriptor_set)
+        /* Null vk_set_layout means set 0 uses mutable descriptors, and this set is unused. */
+        if (!vk_descriptor_set || !list->device->vk_descriptor_heap_layouts[set].vk_set_layout)
             continue;
 
         VK_CALL(vkCmdBindDescriptorSets(list->vk_command_buffer, bindings->vk_bind_point, rs->vk_pipeline_layout,
diff --git a/libs/vkd3d/device.c b/libs/vkd3d/device.c
index 5c801ca46..799133af4 100644
--- a/libs/vkd3d/device.c
+++ b/libs/vkd3d/device.c
@@ -94,6 +94,7 @@ static const struct vkd3d_optional_extension_info optional_device_extensions[] =
     VK_EXTENSION(EXT_DEBUG_MARKER, EXT_debug_marker),
     VK_EXTENSION(EXT_DEPTH_CLIP_ENABLE, EXT_depth_clip_enable),
     VK_EXTENSION(EXT_DESCRIPTOR_INDEXING, EXT_descriptor_indexing),
+    VK_EXTENSION(EXT_MUTABLE_DESCRIPTOR_TYPE, EXT_mutable_descriptor_type),
     VK_EXTENSION(EXT_ROBUSTNESS_2, EXT_robustness2),
     VK_EXTENSION(EXT_SHADER_DEMOTE_TO_HELPER_INVOCATION, EXT_shader_demote_to_helper_invocation),
     VK_EXTENSION(EXT_SHADER_STENCIL_EXPORT, EXT_shader_stencil_export),
@@ -106,13 +107,32 @@ static HRESULT vkd3d_create_vk_descriptor_heap_layout(struct d3d12_device *devic
 {
     const struct vkd3d_vk_device_procs *vk_procs = &device->vk_procs;
     VkDescriptorSetLayoutBindingFlagsCreateInfoEXT flags_info;
+    VkMutableDescriptorTypeCreateInfoEXT mutable_info;
+    VkMutableDescriptorTypeListEXT type_list;
     VkDescriptorSetLayoutCreateInfo set_desc;
     VkDescriptorBindingFlagsEXT set_flags;
     VkDescriptorSetLayoutBinding binding;
     VkResult vr;
 
+    static const VkDescriptorType descriptor_types[] =
+    {
+        VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
+        VK_DESCRIPTOR_TYPE_UNIFORM_TEXEL_BUFFER,
+        VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE,
+        VK_DESCRIPTOR_TYPE_STORAGE_TEXEL_BUFFER,
+        VK_DESCRIPTOR_TYPE_STORAGE_IMAGE,
+    };
+
+    if (device->vk_info.EXT_mutable_descriptor_type && index && index != VKD3D_SET_INDEX_UAV_COUNTER
+            && device->vk_descriptor_heap_layouts[index].applicable_heap_type == D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV)
+    {
+        device->vk_descriptor_heap_layouts[index].vk_set_layout = VK_NULL_HANDLE;
+        return S_OK;
+    }
+
     binding.binding = 0;
-    binding.descriptorType = device->vk_descriptor_heap_layouts[index].type;
+    binding.descriptorType = (device->vk_info.EXT_mutable_descriptor_type && !index)
+            ? VK_DESCRIPTOR_TYPE_MUTABLE_EXT : device->vk_descriptor_heap_layouts[index].type;
     binding.descriptorCount = device->vk_descriptor_heap_layouts[index].count;
     binding.stageFlags = VK_SHADER_STAGE_ALL;
     binding.pImmutableSamplers = NULL;
@@ -132,6 +152,17 @@ static HRESULT vkd3d_create_vk_descriptor_heap_layout(struct d3d12_device *devic
     flags_info.bindingCount = 1;
     flags_info.pBindingFlags = &set_flags;
 
+    if (binding.descriptorType == VK_DESCRIPTOR_TYPE_MUTABLE_EXT)
+    {
+        type_list.descriptorTypeCount = ARRAY_SIZE(descriptor_types);
+        type_list.pDescriptorTypes = descriptor_types;
+        mutable_info.sType = VK_STRUCTURE_TYPE_MUTABLE_DESCRIPTOR_TYPE_CREATE_INFO_EXT;
+        mutable_info.pNext = NULL;
+        mutable_info.mutableDescriptorTypeListCount = 1;
+        mutable_info.pMutableDescriptorTypeLists = &type_list;
+        flags_info.pNext = &mutable_info;
+    }
+
     if ((vr = VK_CALL(vkCreateDescriptorSetLayout(device->vk_device, &set_desc, NULL,
             &device->vk_descriptor_heap_layouts[index].vk_set_layout))) < 0)
     {
@@ -763,6 +794,7 @@ struct vkd3d_physical_device_info
     VkPhysicalDeviceTransformFeedbackFeaturesEXT xfb_features;
     VkPhysicalDeviceVertexAttributeDivisorFeaturesEXT vertex_divisor_features;
     VkPhysicalDeviceTimelineSemaphoreFeaturesKHR timeline_semaphore_features;
+    VkPhysicalDeviceMutableDescriptorTypeFeaturesEXT mutable_features;
 
     VkPhysicalDeviceFeatures2 features2;
 };
@@ -780,6 +812,7 @@ static void vkd3d_physical_device_info_init(struct vkd3d_physical_device_info *i
     VkPhysicalDeviceTexelBufferAlignmentFeaturesEXT *buffer_alignment_features;
     VkPhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT *demote_features;
     VkPhysicalDeviceTimelineSemaphoreFeaturesKHR *timeline_semaphore_features;
+    VkPhysicalDeviceMutableDescriptorTypeFeaturesEXT *mutable_features;
     VkPhysicalDeviceDepthClipEnableFeaturesEXT *depth_clip_features;
     VkPhysicalDeviceMaintenance3Properties *maintenance3_properties;
     VkPhysicalDeviceTransformFeedbackPropertiesEXT *xfb_properties;
@@ -800,6 +833,7 @@ static void vkd3d_physical_device_info_init(struct vkd3d_physical_device_info *i
     vertex_divisor_features = &info->vertex_divisor_features;
     vertex_divisor_properties = &info->vertex_divisor_properties;
     timeline_semaphore_features = &info->timeline_semaphore_features;
+    mutable_features = &info->mutable_features;
     xfb_features = &info->xfb_features;
     xfb_properties = &info->xfb_properties;
 
@@ -823,6 +857,8 @@ static void vkd3d_physical_device_info_init(struct vkd3d_physical_device_info *i
     vk_prepend_struct(&info->features2, vertex_divisor_features);
     timeline_semaphore_features->sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_TIMELINE_SEMAPHORE_FEATURES_KHR;
     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);
 
     if (vulkan_info->KHR_get_physical_device_properties2)
         VK_CALL(vkGetPhysicalDeviceFeatures2KHR(physical_device, &info->features2));
@@ -1594,6 +1630,8 @@ static HRESULT vkd3d_init_device_caps(struct d3d12_device *device,
         vulkan_info->EXT_shader_demote_to_helper_invocation = false;
     if (!physical_device_info->texel_buffer_alignment_features.texelBufferAlignment)
         vulkan_info->EXT_texel_buffer_alignment = false;
+    if (!physical_device_info->mutable_features.mutableDescriptorType)
+        vulkan_info->EXT_mutable_descriptor_type = false;
     if (!physical_device_info->timeline_semaphore_features.timelineSemaphore)
         vulkan_info->KHR_timeline_semaphore = false;
 
diff --git a/libs/vkd3d/resource.c b/libs/vkd3d/resource.c
index abbdfbe20..2f7a3d441 100644
--- a/libs/vkd3d/resource.c
+++ b/libs/vkd3d/resource.c
@@ -2470,12 +2470,14 @@ static void d3d12_desc_write_vk_heap_null_descriptor(struct d3d12_descriptor_hea
 {
     const struct vkd3d_vk_device_procs *vk_procs = &device->vk_procs;
     struct d3d12_descriptor_heap_vk_set *descriptor_set;
-    enum vkd3d_vk_descriptor_set_index set;
+    enum vkd3d_vk_descriptor_set_index set, end;
     unsigned int i = writes->count;
 
+    end = device->vk_info.EXT_mutable_descriptor_type ? VKD3D_SET_INDEX_UNIFORM_BUFFER
+            : VKD3D_SET_INDEX_STORAGE_IMAGE;
     /* Binding a shader with the wrong null descriptor type works in Windows.
      * To support that here we must write one to all applicable Vulkan sets. */
-    for (set = VKD3D_SET_INDEX_UNIFORM_BUFFER; set <= VKD3D_SET_INDEX_STORAGE_IMAGE; ++set)
+    for (set = VKD3D_SET_INDEX_UNIFORM_BUFFER; set <= end; ++set)
     {
         descriptor_set = &descriptor_heap->vk_descriptor_sets[set];
         writes->vk_descriptor_writes[i].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
@@ -4175,9 +4177,11 @@ static HRESULT d3d12_descriptor_heap_create_descriptor_pool(struct d3d12_descrip
 
     for (set = 0, pool_desc.poolSizeCount = 0; set < ARRAY_SIZE(device->vk_descriptor_heap_layouts); ++set)
     {
-        if (device->vk_descriptor_heap_layouts[set].applicable_heap_type == desc->Type)
+        if (device->vk_descriptor_heap_layouts[set].applicable_heap_type == desc->Type
+                && device->vk_descriptor_heap_layouts[set].vk_set_layout)
         {
-            pool_sizes[pool_desc.poolSizeCount].type = device->vk_descriptor_heap_layouts[set].type;
+            pool_sizes[pool_desc.poolSizeCount].type = (device->vk_info.EXT_mutable_descriptor_type && !set)
+                    ? VK_DESCRIPTOR_TYPE_MUTABLE_EXT : device->vk_descriptor_heap_layouts[set].type;
             pool_sizes[pool_desc.poolSizeCount++].descriptorCount = desc->NumDescriptors;
         }
     }
@@ -4203,6 +4207,16 @@ static HRESULT d3d12_descriptor_heap_create_descriptor_set(struct d3d12_descript
     VkDescriptorSetAllocateInfo set_desc;
     VkResult vr;
 
+    if (!device->vk_descriptor_heap_layouts[set].vk_set_layout)
+    {
+        /* Set 0 uses mutable descriptors, and this set is unused. */
+        if (!descriptor_heap->vk_descriptor_sets[0].vk_set)
+            d3d12_descriptor_heap_create_descriptor_set(descriptor_heap, device, 0);
+        descriptor_set->vk_set = descriptor_heap->vk_descriptor_sets[0].vk_set;
+        descriptor_set->vk_type = device->vk_descriptor_heap_layouts[set].type;
+        return S_OK;
+    }
+
     set_desc.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO;
     set_desc.pNext = &set_size;
     set_desc.descriptorPool = descriptor_heap->vk_descriptor_pool;
diff --git a/libs/vkd3d/state.c b/libs/vkd3d/state.c
index 9a039452c..3406da366 100644
--- a/libs/vkd3d/state.c
+++ b/libs/vkd3d/state.c
@@ -848,7 +848,20 @@ static void vkd3d_descriptor_heap_binding_from_descriptor_range(const struct d3d
     const struct vkd3d_device_descriptor_limits *descriptor_limits = &root_signature->device->vk_info.descriptor_limits;
     unsigned int descriptor_set_size;
 
-    switch (range->type)
+    if (root_signature->device->vk_info.EXT_mutable_descriptor_type)
+    {
+        if (range->type == VKD3D_SHADER_DESCRIPTOR_TYPE_SAMPLER)
+        {
+            binding->set = VKD3D_SET_INDEX_SAMPLER;
+            descriptor_set_size = descriptor_limits->sampler_max_descriptors;
+        }
+        else
+        {
+            binding->set = 0;
+            descriptor_set_size = descriptor_limits->sampled_image_max_descriptors;
+        }
+    }
+    else switch (range->type)
     {
         case VKD3D_SHADER_DESCRIPTOR_TYPE_SRV:
             binding->set = is_buffer ? VKD3D_SET_INDEX_UNIFORM_TEXEL_BUFFER : VKD3D_SET_INDEX_SAMPLED_IMAGE;
diff --git a/libs/vkd3d/vkd3d_private.h b/libs/vkd3d/vkd3d_private.h
index e0eb9f3d3..a07499913 100644
--- a/libs/vkd3d/vkd3d_private.h
+++ b/libs/vkd3d/vkd3d_private.h
@@ -133,6 +133,7 @@ struct vkd3d_vulkan_info
     bool EXT_debug_marker;
     bool EXT_depth_clip_enable;
     bool EXT_descriptor_indexing;
+    bool EXT_mutable_descriptor_type;
     bool EXT_robustness2;
     bool EXT_shader_demote_to_helper_invocation;
     bool EXT_shader_stencil_export;
-- 
GitLab

https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/523