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#include <cstring>
#include "dxvk_descriptor.h"
#include "dxvk_limits.h"
#include "dxvk_pipelayout.h"
namespace dxvk {
DxvkDescriptorSlotMapping:: DxvkDescriptorSlotMapping() { }
DxvkDescriptorSlotMapping::~DxvkDescriptorSlotMapping() { }
void DxvkDescriptorSlotMapping::defineSlot(
VkShaderStageFlagBits stage,
const DxvkResourceSlot& desc) {
uint32_t bindingId = this->getBindingId(desc.slot);
if (bindingId != InvalidBinding) {
m_descriptorSlots[bindingId].stages |= stage;
m_descriptorSlots[bindingId].access |= desc.access;
} else {
DxvkDescriptorSlot slotInfo;
slotInfo.slot = desc.slot;
slotInfo.type = desc.type;
slotInfo.view = desc.view;
slotInfo.stages = stage;
slotInfo.access = desc.access;
m_descriptorSlots.push_back(slotInfo);
}
}
void DxvkDescriptorSlotMapping::definePushConstRange(
VkShaderStageFlagBits stage,
uint32_t offset,
uint32_t size) {
m_pushConstRange.stageFlags |= stage;
m_pushConstRange.size = std::max(
m_pushConstRange.size, offset + size);
}
uint32_t DxvkDescriptorSlotMapping::getBindingId(uint32_t slot) const {
// This won't win a performance competition, but the number
// of bindings used by a shader is usually much smaller than
// the number of resource slots available to the system.
for (uint32_t i = 0; i < m_descriptorSlots.size(); i++) {
if (m_descriptorSlots[i].slot == slot)
return i;
}
return InvalidBinding;
}
void DxvkDescriptorSlotMapping::makeDescriptorsDynamic(
uint32_t uniformBuffers,
uint32_t storageBuffers) {
if (this->countDescriptors(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER) <= uniformBuffers)
this->replaceDescriptors(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER_DYNAMIC);
}
uint32_t DxvkDescriptorSlotMapping::countDescriptors(
VkDescriptorType type) const {
uint32_t count = 0;
for (const auto& slot : m_descriptorSlots)
count += slot.type == type ? 1 : 0;
return count;
}
void DxvkDescriptorSlotMapping::replaceDescriptors(
VkDescriptorType oldType,
VkDescriptorType newType) {
for (auto& slot : m_descriptorSlots) {
if (slot.type == oldType)
slot.type = newType;
}
}
DxvkPipelineLayout::DxvkPipelineLayout(
const Rc<vk::DeviceFn>& vkd,
const DxvkDescriptorSlotMapping& slotMapping,
VkPipelineBindPoint pipelineBindPoint)
: m_vkd (vkd),
m_pushConstRange(slotMapping.pushConstRange()),
m_bindingSlots (slotMapping.bindingCount()) {
auto bindingCount = slotMapping.bindingCount();
auto bindingInfos = slotMapping.bindingInfos();
if (bindingCount > MaxNumActiveBindings)
throw DxvkError(str::format("Too many active bindings in pipeline layout (", bindingCount, ")"));
for (uint32_t i = 0; i < bindingCount; i++)
m_bindingSlots[i] = bindingInfos[i];
std::vector<VkDescriptorSetLayoutBinding> bindings(bindingCount);
std::vector<VkDescriptorUpdateTemplateEntry> tEntries(bindingCount);
for (uint32_t i = 0; i < bindingCount; i++) {
bindings[i].binding = i;
bindings[i].descriptorType = bindingInfos[i].type;
bindings[i].descriptorCount = 1;
bindings[i].stageFlags = bindingInfos[i].stages;
bindings[i].pImmutableSamplers = nullptr;
tEntries[i].dstBinding = i;
tEntries[i].dstArrayElement = 0;
tEntries[i].descriptorCount = 1;
tEntries[i].descriptorType = bindingInfos[i].type;
tEntries[i].offset = sizeof(DxvkDescriptorInfo) * i;
tEntries[i].stride = 0;
if (bindingInfos[i].type == VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER_DYNAMIC)
m_dynamicSlots.push_back(i);
m_descriptorTypes.set(bindingInfos[i].type);
}
// Create descriptor set layout. We do not need to
// create one if there are no active resource bindings.
if (bindingCount > 0) {
VkDescriptorSetLayoutCreateInfo dsetInfo;
dsetInfo.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO;
dsetInfo.pNext = nullptr;
dsetInfo.flags = 0;
dsetInfo.bindingCount = bindings.size();
dsetInfo.pBindings = bindings.data();
if (m_vkd->vkCreateDescriptorSetLayout(m_vkd->device(),
&dsetInfo, nullptr, &m_descriptorSetLayout) != VK_SUCCESS)
throw DxvkError("DxvkPipelineLayout: Failed to create descriptor set layout");
}
// Create pipeline layout with the given descriptor set layout
VkPipelineLayoutCreateInfo pipeInfo;
pipeInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO;
pipeInfo.pNext = nullptr;
pipeInfo.flags = 0;
pipeInfo.setLayoutCount = bindingCount > 0 ? 1 : 0;
pipeInfo.pSetLayouts = &m_descriptorSetLayout;
pipeInfo.pushConstantRangeCount = 0;
pipeInfo.pPushConstantRanges = nullptr;
if (m_pushConstRange.size) {
pipeInfo.pushConstantRangeCount = 1;
pipeInfo.pPushConstantRanges = &m_pushConstRange;
}
if (m_vkd->vkCreatePipelineLayout(m_vkd->device(),
&pipeInfo, nullptr, &m_pipelineLayout) != VK_SUCCESS) {
m_vkd->vkDestroyDescriptorSetLayout(m_vkd->device(), m_descriptorSetLayout, nullptr);
throw DxvkError("DxvkPipelineLayout: Failed to create pipeline layout");
}
// Create descriptor update template. If there are no active
// resource bindings, there won't be any descriptors to update.
if (bindingCount > 0) {
VkDescriptorUpdateTemplateCreateInfo templateInfo;
templateInfo.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_UPDATE_TEMPLATE_CREATE_INFO;
templateInfo.pNext = nullptr;
templateInfo.flags = 0;
templateInfo.descriptorUpdateEntryCount = tEntries.size();
templateInfo.pDescriptorUpdateEntries = tEntries.data();
templateInfo.templateType = VK_DESCRIPTOR_UPDATE_TEMPLATE_TYPE_DESCRIPTOR_SET;
templateInfo.descriptorSetLayout = m_descriptorSetLayout;
templateInfo.pipelineBindPoint = pipelineBindPoint;
templateInfo.pipelineLayout = m_pipelineLayout;
templateInfo.set = 0;
if (m_vkd->vkCreateDescriptorUpdateTemplate(
m_vkd->device(), &templateInfo, nullptr, &m_descriptorTemplate) != VK_SUCCESS) {
m_vkd->vkDestroyDescriptorSetLayout(m_vkd->device(), m_descriptorSetLayout, nullptr);
m_vkd->vkDestroyPipelineLayout(m_vkd->device(), m_pipelineLayout, nullptr);
throw DxvkError("DxvkPipelineLayout: Failed to create descriptor update template");
}
}
}
DxvkPipelineLayout::~DxvkPipelineLayout() {
m_vkd->vkDestroyDescriptorUpdateTemplate(
m_vkd->device(), m_descriptorTemplate, nullptr);
m_vkd->vkDestroyPipelineLayout(
m_vkd->device(), m_pipelineLayout, nullptr);
m_vkd->vkDestroyDescriptorSetLayout(
m_vkd->device(), m_descriptorSetLayout, nullptr);
}
}
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