From: Conor McCarthy cmccarthy@codeweavers.com
Reduces the cost of calling vkUpdateDescriptorSets() via winevulkan and its thunks. The performance gain can be as high as 20%. --- libs/vkd3d/resource.c | 201 +++++++++++++++++++++++++----------------- 1 file changed, 121 insertions(+), 80 deletions(-)
diff --git a/libs/vkd3d/resource.c b/libs/vkd3d/resource.c index b9de98d0..d12191a9 100644 --- a/libs/vkd3d/resource.c +++ b/libs/vkd3d/resource.c @@ -2158,73 +2158,91 @@ static inline void d3d12_desc_replace(struct d3d12_desc *dst, void *view, struct vkd3d_view_decref(view, device); }
+#define VKD3D_DESCRIPTOR_WRITE_BUFFER_SIZE 24 + +struct descriptor_writes +{ + VkDescriptorBufferInfo null_vk_cbv_info; + VkBufferView null_vk_buffer_view; + VkDescriptorImageInfo vk_image_infos[VKD3D_DESCRIPTOR_WRITE_BUFFER_SIZE]; + VkWriteDescriptorSet vk_descriptor_writes[VKD3D_DESCRIPTOR_WRITE_BUFFER_SIZE]; + void *held_refs[VKD3D_DESCRIPTOR_WRITE_BUFFER_SIZE]; + unsigned int count; + unsigned int held_ref_count; +}; + +static void descriptor_writes_free_object_refs(struct descriptor_writes *writes, struct d3d12_device *device) +{ + unsigned int i; + for (i = 0; i < writes->held_ref_count; ++i) + vkd3d_view_decref(writes->held_refs[i], device); + writes->held_ref_count = 0; +} + static void d3d12_desc_write_vk_heap_null_descriptor(struct d3d12_descriptor_heap *descriptor_heap, - uint32_t dst_array_element, struct d3d12_device *device) + uint32_t dst_array_element, struct descriptor_writes *writes, struct d3d12_device *device) { - VkWriteDescriptorSet vk_descriptor_writes[VKD3D_SET_INDEX_STORAGE_IMAGE + 1]; const struct vkd3d_vk_device_procs *vk_procs = &device->vk_procs; struct d3d12_descriptor_heap_vk_set *descriptor_set; - VkBufferView vk_buffer_view = VK_NULL_HANDLE; - VkDescriptorImageInfo vk_image_infos[2]; - enum vkd3d_vk_descriptor_set_index i; - VkDescriptorBufferInfo vk_cbv_info; - - vk_cbv_info.buffer = VK_NULL_HANDLE; - vk_cbv_info.offset = 0; - vk_cbv_info.range = VK_WHOLE_SIZE; - memset(vk_image_infos, 0, sizeof(vk_image_infos)); - vk_image_infos[0].imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL; - vk_image_infos[1].imageLayout = VK_IMAGE_LAYOUT_GENERAL; + enum vkd3d_vk_descriptor_set_index set; + unsigned int i = writes->count;
/* 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 (i = VKD3D_SET_INDEX_UNIFORM_BUFFER; i <= VKD3D_SET_INDEX_STORAGE_IMAGE; ++i) - { - descriptor_set = &descriptor_heap->vk_descriptor_sets[i]; - vk_descriptor_writes[i].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET; - vk_descriptor_writes[i].pNext = NULL; - vk_descriptor_writes[i].dstSet = descriptor_set->vk_set; - vk_descriptor_writes[i].dstBinding = 0; - vk_descriptor_writes[i].dstArrayElement = dst_array_element; - vk_descriptor_writes[i].descriptorCount = 1; - vk_descriptor_writes[i].descriptorType = descriptor_set->vk_type; - switch (i) + for (set = VKD3D_SET_INDEX_UNIFORM_BUFFER; set <= VKD3D_SET_INDEX_STORAGE_IMAGE; ++set) + { + descriptor_set = &descriptor_heap->vk_descriptor_sets[set]; + writes->vk_descriptor_writes[i].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET; + writes->vk_descriptor_writes[i].pNext = NULL; + writes->vk_descriptor_writes[i].dstSet = descriptor_set->vk_set; + writes->vk_descriptor_writes[i].dstBinding = 0; + writes->vk_descriptor_writes[i].dstArrayElement = dst_array_element; + writes->vk_descriptor_writes[i].descriptorCount = 1; + writes->vk_descriptor_writes[i].descriptorType = descriptor_set->vk_type; + switch (set) { case VKD3D_SET_INDEX_UNIFORM_BUFFER: - vk_descriptor_writes[i].pImageInfo = NULL; - vk_descriptor_writes[i].pBufferInfo = &vk_cbv_info; - vk_descriptor_writes[i].pTexelBufferView = NULL; + writes->vk_descriptor_writes[i].pImageInfo = NULL; + writes->vk_descriptor_writes[i].pBufferInfo = &writes->null_vk_cbv_info; + writes->vk_descriptor_writes[i].pTexelBufferView = NULL; break; case VKD3D_SET_INDEX_SAMPLED_IMAGE: case VKD3D_SET_INDEX_STORAGE_IMAGE: - vk_descriptor_writes[i].pImageInfo = &vk_image_infos[i == VKD3D_SET_INDEX_STORAGE_IMAGE]; - vk_descriptor_writes[i].pBufferInfo = NULL; - vk_descriptor_writes[i].pTexelBufferView = NULL; + writes->vk_descriptor_writes[i].pImageInfo = &writes->vk_image_infos[i]; + writes->vk_descriptor_writes[i].pBufferInfo = NULL; + writes->vk_descriptor_writes[i].pTexelBufferView = NULL; + writes->vk_image_infos[i].sampler = VK_NULL_HANDLE; + writes->vk_image_infos[i].imageView = VK_NULL_HANDLE; + writes->vk_image_infos[i].imageLayout = (set == VKD3D_SET_INDEX_STORAGE_IMAGE) + ? VK_IMAGE_LAYOUT_GENERAL : VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL; break; case VKD3D_SET_INDEX_UNIFORM_TEXEL_BUFFER: case VKD3D_SET_INDEX_STORAGE_TEXEL_BUFFER: - vk_descriptor_writes[i].pImageInfo = NULL; - vk_descriptor_writes[i].pBufferInfo = NULL; - vk_descriptor_writes[i].pTexelBufferView = &vk_buffer_view; + writes->vk_descriptor_writes[i].pImageInfo = NULL; + writes->vk_descriptor_writes[i].pBufferInfo = NULL; + writes->vk_descriptor_writes[i].pTexelBufferView = &writes->null_vk_buffer_view; break; default: assert(false); break; } + if (++i < ARRAY_SIZE(writes->vk_descriptor_writes) - 1) + continue; + VK_CALL(vkUpdateDescriptorSets(device->vk_device, i, writes->vk_descriptor_writes, 0, NULL)); + descriptor_writes_free_object_refs(writes, device); + i = 0; }
- VK_CALL(vkUpdateDescriptorSets(device->vk_device, i, vk_descriptor_writes, 0, NULL)); + writes->count = i; }
static void d3d12_desc_write_vk_heap(struct d3d12_descriptor_heap *descriptor_heap, unsigned int dst_array_element, - void *object, struct d3d12_device *device) + struct descriptor_writes *writes, void *object, struct d3d12_device *device) { struct d3d12_descriptor_heap_vk_set *descriptor_set; const struct vkd3d_vk_device_procs *vk_procs; - VkWriteDescriptorSet vk_descriptor_writes[2]; union d3d12_desc_object u = {object}; - VkDescriptorImageInfo vk_image_info; - unsigned int count = 1; + unsigned int i = writes->count; VkDescriptorType type; bool is_null = false;
@@ -2232,79 +2250,98 @@ static void d3d12_desc_write_vk_heap(struct d3d12_descriptor_heap *descriptor_he descriptor_set = &descriptor_heap->vk_descriptor_sets[vkd3d_vk_descriptor_set_index_from_vk_descriptor_type(type)]; vk_procs = &device->vk_procs;
- vk_descriptor_writes[0].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET; - vk_descriptor_writes[0].pNext = NULL; - vk_descriptor_writes[0].dstSet = descriptor_set->vk_set; - vk_descriptor_writes[0].dstBinding = 0; - vk_descriptor_writes[0].dstArrayElement = dst_array_element; - vk_descriptor_writes[0].descriptorCount = 1; - vk_descriptor_writes[0].descriptorType = type; + writes->vk_descriptor_writes[i].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET; + writes->vk_descriptor_writes[i].pNext = NULL; + writes->vk_descriptor_writes[i].dstSet = descriptor_set->vk_set; + writes->vk_descriptor_writes[i].dstBinding = 0; + writes->vk_descriptor_writes[i].dstArrayElement = dst_array_element; + writes->vk_descriptor_writes[i].descriptorCount = 1; + writes->vk_descriptor_writes[i].descriptorType = type; switch (type) { case VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER: - vk_descriptor_writes[0].pImageInfo = NULL; - vk_descriptor_writes[0].pBufferInfo = &u.cb_desc->vk_cbv_info; - vk_descriptor_writes[0].pTexelBufferView = NULL; + writes->vk_descriptor_writes[i].pImageInfo = NULL; + writes->vk_descriptor_writes[i].pBufferInfo = &u.cb_desc->vk_cbv_info; + writes->vk_descriptor_writes[i].pTexelBufferView = NULL; is_null = !u.cb_desc->vk_cbv_info.buffer; break; case VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE: case VK_DESCRIPTOR_TYPE_STORAGE_IMAGE: - vk_descriptor_writes[0].pImageInfo = &vk_image_info; - vk_descriptor_writes[0].pBufferInfo = NULL; - vk_descriptor_writes[0].pTexelBufferView = NULL; - vk_image_info.sampler = VK_NULL_HANDLE; - is_null = !(vk_image_info.imageView = u.view->v.u.vk_image_view); - vk_image_info.imageLayout = (type == VK_DESCRIPTOR_TYPE_STORAGE_IMAGE) + writes->vk_descriptor_writes[i].pImageInfo = &writes->vk_image_infos[i]; + writes->vk_descriptor_writes[i].pBufferInfo = NULL; + writes->vk_descriptor_writes[i].pTexelBufferView = NULL; + writes->vk_image_infos[i].sampler = VK_NULL_HANDLE; + is_null = !(writes->vk_image_infos[i].imageView = u.view->v.u.vk_image_view); + writes->vk_image_infos[i].imageLayout = (type == VK_DESCRIPTOR_TYPE_STORAGE_IMAGE) ? VK_IMAGE_LAYOUT_GENERAL : VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL; break; case VK_DESCRIPTOR_TYPE_UNIFORM_TEXEL_BUFFER: case VK_DESCRIPTOR_TYPE_STORAGE_TEXEL_BUFFER: - vk_descriptor_writes[0].pImageInfo = NULL; - vk_descriptor_writes[0].pBufferInfo = NULL; - vk_descriptor_writes[0].pTexelBufferView = &u.view->v.u.vk_buffer_view; + writes->vk_descriptor_writes[i].pImageInfo = NULL; + writes->vk_descriptor_writes[i].pBufferInfo = NULL; + writes->vk_descriptor_writes[i].pTexelBufferView = &u.view->v.u.vk_buffer_view; is_null = !u.view->v.u.vk_buffer_view; break; case VK_DESCRIPTOR_TYPE_SAMPLER: - vk_descriptor_writes[0].pImageInfo = &vk_image_info; - vk_descriptor_writes[0].pBufferInfo = NULL; - vk_descriptor_writes[0].pTexelBufferView = NULL; - vk_image_info.sampler = u.view->v.u.vk_sampler; - vk_image_info.imageView = VK_NULL_HANDLE; - vk_image_info.imageLayout = VK_IMAGE_LAYOUT_UNDEFINED; + writes->vk_descriptor_writes[i].pImageInfo = &writes->vk_image_infos[i]; + writes->vk_descriptor_writes[i].pBufferInfo = NULL; + writes->vk_descriptor_writes[i].pTexelBufferView = NULL; + writes->vk_image_infos[i].sampler = u.view->v.u.vk_sampler; + writes->vk_image_infos[i].imageView = VK_NULL_HANDLE; + writes->vk_image_infos[i].imageLayout = VK_IMAGE_LAYOUT_UNDEFINED; break; default: ERR("Unhandled descriptor type %#x.\n", type); break; } if (is_null && device->vk_info.EXT_robustness2) - return d3d12_desc_write_vk_heap_null_descriptor(descriptor_heap, dst_array_element, device); + return d3d12_desc_write_vk_heap_null_descriptor(descriptor_heap, dst_array_element, writes, device);
+ ++i; if (u.header->magic == VKD3D_DESCRIPTOR_MAGIC_UAV && u.view->v.vk_counter_view) { descriptor_set = &descriptor_heap->vk_descriptor_sets[VKD3D_SET_INDEX_UAV_COUNTER]; - vk_descriptor_writes[1].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET; - vk_descriptor_writes[1].pNext = NULL; - vk_descriptor_writes[1].dstSet = descriptor_set->vk_set; - vk_descriptor_writes[1].dstBinding = 0; - vk_descriptor_writes[1].dstArrayElement = dst_array_element; - vk_descriptor_writes[1].descriptorType = VK_DESCRIPTOR_TYPE_STORAGE_TEXEL_BUFFER; - vk_descriptor_writes[1].descriptorCount = 1; - vk_descriptor_writes[1].pImageInfo = NULL; - vk_descriptor_writes[1].pBufferInfo = NULL; - vk_descriptor_writes[1].pTexelBufferView = &u.view->v.vk_counter_view; - ++count; + writes->vk_descriptor_writes[i].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET; + writes->vk_descriptor_writes[i].pNext = NULL; + writes->vk_descriptor_writes[i].dstSet = descriptor_set->vk_set; + writes->vk_descriptor_writes[i].dstBinding = 0; + writes->vk_descriptor_writes[i].dstArrayElement = dst_array_element; + writes->vk_descriptor_writes[i].descriptorType = VK_DESCRIPTOR_TYPE_STORAGE_TEXEL_BUFFER; + writes->vk_descriptor_writes[i].descriptorCount = 1; + writes->vk_descriptor_writes[i].pImageInfo = NULL; + writes->vk_descriptor_writes[i].pBufferInfo = NULL; + writes->vk_descriptor_writes[i++].pTexelBufferView = &u.view->v.vk_counter_view; }
- VK_CALL(vkUpdateDescriptorSets(device->vk_device, count, vk_descriptor_writes, 0, NULL)); + if (i >= ARRAY_SIZE(writes->vk_descriptor_writes) - 1) + { + VK_CALL(vkUpdateDescriptorSets(device->vk_device, i, writes->vk_descriptor_writes, 0, NULL)); + descriptor_writes_free_object_refs(writes, device); + i = 0; + } + + writes->count = i; }
void d3d12_desc_flush_vk_heap_updates(struct d3d12_descriptor_heap *descriptor_heap, struct d3d12_device *device) { + const struct vkd3d_vk_device_procs *vk_procs = &device->vk_procs; struct d3d12_desc *descriptors, *src; + struct descriptor_writes writes; union d3d12_desc_object u; unsigned int i, next;
- i = vkd3d_atomic_exchange(&descriptor_heap->dirty_list_head, UINT_MAX); + if ((i = vkd3d_atomic_exchange(&descriptor_heap->dirty_list_head, UINT_MAX)) == UINT_MAX) + return; + + descriptors = (struct d3d12_desc *)descriptor_heap->descriptors; + + writes.null_vk_cbv_info.buffer = VK_NULL_HANDLE; + writes.null_vk_cbv_info.offset = 0; + writes.null_vk_cbv_info.range = VK_WHOLE_SIZE; + writes.null_vk_buffer_view = VK_NULL_HANDLE; + writes.count = 0; + writes.held_ref_count = 0;
descriptors = (struct d3d12_desc *)descriptor_heap->descriptors;
@@ -2321,12 +2358,16 @@ void d3d12_desc_flush_vk_heap_updates(struct d3d12_descriptor_heap *descriptor_h continue; }
- d3d12_desc_write_vk_heap(descriptor_heap, i, u.object, device); - - vkd3d_view_decref(u.object, device); + writes.held_refs[writes.held_ref_count++] = u.object; + d3d12_desc_write_vk_heap(descriptor_heap, i, &writes, u.object, device);
vkd3d_atomic_exchange(&src->next, 0); } + + /* Avoid thunk calls wherever possible. */ + if (writes.count) + VK_CALL(vkUpdateDescriptorSets(device->vk_device, writes.count, writes.vk_descriptor_writes, 0, NULL)); + descriptor_writes_free_object_refs(&writes, device); }
static void d3d12_desc_mark_as_modified(struct d3d12_desc *dst)