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// Copyright 2021 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <cstddef>
#include <boost/container/small_vector.hpp>
#include "common/assert.h"
#include "common/common_types.h"
#include "shader_recompiler/shader_info.h"
#include "video_core/renderer_vulkan/vk_texture_cache.h"
#include "video_core/renderer_vulkan/vk_update_descriptor.h"
#include "video_core/texture_cache/texture_cache.h"
#include "video_core/texture_cache/types.h"
#include "video_core/textures/texture.h"
#include "video_core/vulkan_common/vulkan_device.h"
namespace Vulkan {
constexpr size_t MAX_RESCALING_WORDS = 4;
class DescriptorLayoutBuilder {
public:
DescriptorLayoutBuilder(const Device& device_) : device{&device_} {}
bool CanUsePushDescriptor() const noexcept {
return device->IsKhrPushDescriptorSupported() &&
num_descriptors <= device->MaxPushDescriptors();
}
vk::DescriptorSetLayout CreateDescriptorSetLayout(bool use_push_descriptor) const {
if (bindings.empty()) {
return nullptr;
}
const VkDescriptorSetLayoutCreateFlags flags =
use_push_descriptor ? VK_DESCRIPTOR_SET_LAYOUT_CREATE_PUSH_DESCRIPTOR_BIT_KHR : 0;
return device->GetLogical().CreateDescriptorSetLayout({
.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO,
.pNext = nullptr,
.flags = flags,
.bindingCount = static_cast<u32>(bindings.size()),
.pBindings = bindings.data(),
});
}
vk::DescriptorUpdateTemplateKHR CreateTemplate(VkDescriptorSetLayout descriptor_set_layout,
VkPipelineLayout pipeline_layout,
bool use_push_descriptor) const {
if (entries.empty()) {
return nullptr;
}
const VkDescriptorUpdateTemplateType type =
use_push_descriptor ? VK_DESCRIPTOR_UPDATE_TEMPLATE_TYPE_PUSH_DESCRIPTORS_KHR
: VK_DESCRIPTOR_UPDATE_TEMPLATE_TYPE_DESCRIPTOR_SET_KHR;
return device->GetLogical().CreateDescriptorUpdateTemplateKHR({
.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_UPDATE_TEMPLATE_CREATE_INFO_KHR,
.pNext = nullptr,
.flags = 0,
.descriptorUpdateEntryCount = static_cast<u32>(entries.size()),
.pDescriptorUpdateEntries = entries.data(),
.templateType = type,
.descriptorSetLayout = descriptor_set_layout,
.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS,
.pipelineLayout = pipeline_layout,
.set = 0,
});
}
vk::PipelineLayout CreatePipelineLayout(VkDescriptorSetLayout descriptor_set_layout) const {
const VkPushConstantRange range{
.stageFlags = static_cast<VkShaderStageFlags>(
is_compute ? VK_SHADER_STAGE_COMPUTE_BIT : VK_SHADER_STAGE_ALL_GRAPHICS),
.offset = 0,
.size = (is_compute ? 0 : sizeof(f32)) + sizeof(std::array<u32, MAX_RESCALING_WORDS>),
};
return device->GetLogical().CreatePipelineLayout({
.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO,
.pNext = nullptr,
.flags = 0,
.setLayoutCount = descriptor_set_layout ? 1U : 0U,
.pSetLayouts = bindings.empty() ? nullptr : &descriptor_set_layout,
.pushConstantRangeCount = 1,
.pPushConstantRanges = &range,
});
}
void Add(const Shader::Info& info, VkShaderStageFlags stage) {
is_compute |= (stage & VK_SHADER_STAGE_COMPUTE_BIT) != 0;
Add(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, stage, info.constant_buffer_descriptors);
Add(VK_DESCRIPTOR_TYPE_STORAGE_BUFFER, stage, info.storage_buffers_descriptors);
Add(VK_DESCRIPTOR_TYPE_UNIFORM_TEXEL_BUFFER, stage, info.texture_buffer_descriptors);
Add(VK_DESCRIPTOR_TYPE_STORAGE_TEXEL_BUFFER, stage, info.image_buffer_descriptors);
Add(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, stage, info.texture_descriptors);
Add(VK_DESCRIPTOR_TYPE_STORAGE_IMAGE, stage, info.image_descriptors);
}
private:
template <typename Descriptors>
void Add(VkDescriptorType type, VkShaderStageFlags stage, const Descriptors& descriptors) {
const size_t num{descriptors.size()};
for (size_t i = 0; i < num; ++i) {
bindings.push_back({
.binding = binding,
.descriptorType = type,
.descriptorCount = descriptors[i].count,
.stageFlags = stage,
.pImmutableSamplers = nullptr,
});
entries.push_back({
.dstBinding = binding,
.dstArrayElement = 0,
.descriptorCount = descriptors[i].count,
.descriptorType = type,
.offset = offset,
.stride = sizeof(DescriptorUpdateEntry),
});
++binding;
num_descriptors += descriptors[i].count;
offset += sizeof(DescriptorUpdateEntry);
}
}
const Device* device{};
bool is_compute{};
boost::container::small_vector<VkDescriptorSetLayoutBinding, 32> bindings;
boost::container::small_vector<VkDescriptorUpdateTemplateEntryKHR, 32> entries;
u32 binding{};
u32 num_descriptors{};
size_t offset{};
};
class RescalingPushConstant {
public:
explicit RescalingPushConstant(u32 num_textures) noexcept {}
void PushTexture(bool is_rescaled) noexcept {
*texture_ptr |= is_rescaled ? texture_bit : 0;
texture_bit <<= 1;
if (texture_bit == 0) {
texture_bit = 1u;
++texture_ptr;
}
}
const std::array<u32, MAX_RESCALING_WORDS>& Data() const noexcept {
return words;
}
private:
std::array<u32, MAX_RESCALING_WORDS> words{};
u32* texture_ptr{words.data()};
u32 texture_bit{1u};
};
inline void PushImageDescriptors(TextureCache& texture_cache,
VKUpdateDescriptorQueue& update_descriptor_queue,
const Shader::Info& info, RescalingPushConstant& rescaling,
const VkSampler*& samplers,
const VideoCommon::ImageViewInOut*& views) {
views += Shader::NumDescriptors(info.texture_buffer_descriptors);
views += Shader::NumDescriptors(info.image_buffer_descriptors);
for (const auto& desc : info.texture_descriptors) {
for (u32 index = 0; index < desc.count; ++index) {
const VideoCommon::ImageViewId image_view_id{(views++)->id};
const VkSampler sampler{*(samplers++)};
ImageView& image_view{texture_cache.GetImageView(image_view_id)};
const VkImageView vk_image_view{image_view.Handle(desc.type)};
update_descriptor_queue.AddSampledImage(vk_image_view, sampler);
rescaling.PushTexture(texture_cache.IsRescaling(image_view));
}
}
for (const auto& desc : info.image_descriptors) {
for (u32 index = 0; index < desc.count; ++index) {
ImageView& image_view{texture_cache.GetImageView((views++)->id)};
if (desc.is_written) {
texture_cache.MarkModification(image_view.image_id);
}
const VkImageView vk_image_view{image_view.StorageView(desc.type, desc.format)};
update_descriptor_queue.AddImage(vk_image_view);
}
}
}
} // namespace Vulkan
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