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main.cpp
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main.cpp
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/*
* Vulkan physical based rendering glTF 2.0 demo
*
* Copyright (C) 2018 by Sascha Willems - www.saschawillems.de
*
* This code is licensed under the MIT license (MIT) (http://opensource.org/licenses/MIT)
*/
// glTF format: https://github.com/KhronosGroup/glTF
// tinyglTF loader: https://github.com/syoyo/tinygltf
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <vector>
#include <chrono>
#include <map>
#include "algorithm"
#if defined(__ANDROID__)
#define TINYGLTF_ANDROID_LOAD_FROM_ASSETS
#endif
#include <vulkan/vulkan.h>
#include "VulkanExampleBase.h"
#include "VulkanTexture.hpp"
#include "VulkanglTFModel.hpp"
#include "VulkanUtils.hpp"
#include "ui.hpp"
#define GLM_FORCE_RADIANS
#define GLM_FORCE_DEPTH_ZERO_TO_ONE
#include <glm/glm.hpp>
#include <glm/gtc/matrix_transform.hpp>
/*
PBR example main class
*/
class VulkanExample : public VulkanExampleBase
{
public:
struct Textures {
vks::TextureCubeMap environmentCube;
vks::Texture2D empty;
vks::Texture2D lutBrdf;
vks::TextureCubeMap irradianceCube;
vks::TextureCubeMap prefilteredCube;
} textures;
struct Models {
vkglTF::Model scene;
vkglTF::Model skybox;
} models;
struct UniformBufferSet {
Buffer scene;
Buffer skybox;
Buffer params;
};
struct UBOMatrices {
glm::mat4 projection;
glm::mat4 model;
glm::mat4 view;
glm::vec3 camPos;
} shaderValuesScene, shaderValuesSkybox;
struct shaderValuesParams {
glm::vec4 lightDir;
float exposure = 4.5f;
float gamma = 2.2f;
float prefilteredCubeMipLevels;
float scaleIBLAmbient = 1.0f;
float debugViewInputs = 0;
float debugViewEquation = 0;
} shaderValuesParams;
VkPipelineLayout pipelineLayout;
struct Pipelines {
VkPipeline skybox;
VkPipeline pbr;
VkPipeline pbrAlphaBlend;
} pipelines;
struct DescriptorSetLayouts {
VkDescriptorSetLayout scene;
VkDescriptorSetLayout material;
VkDescriptorSetLayout node;
} descriptorSetLayouts;
struct DescriptorSets {
VkDescriptorSet scene;
VkDescriptorSet skybox;
};
std::vector<DescriptorSets> descriptorSets;
std::vector<VkCommandBuffer> commandBuffers;
std::vector<UniformBufferSet> uniformBuffers;
std::vector<VkFence> waitFences;
std::vector<VkSemaphore> renderCompleteSemaphores;
std::vector<VkSemaphore> presentCompleteSemaphores;
const uint32_t renderAhead = 2;
uint32_t frameIndex = 0;
int32_t animationIndex = 0;
float animationTimer = 0.0f;
bool animate = true;
bool displayBackground = true;
struct LightSource {
glm::vec3 color = glm::vec3(1.0f);
glm::vec3 rotation = glm::vec3(75.0f, 40.0f, 0.0f);
} lightSource;
UI *ui;
#if defined(VK_USE_PLATFORM_ANDROID_KHR)
const std::string assetpath = "";
#else
const std::string assetpath = "./../data/";
#endif
bool rotateModel = false;
glm::vec3 modelrot = glm::vec3(0.0f);
glm::vec3 modelPos = glm::vec3(0.0f);
enum PBRWorkflows{ PBR_WORKFLOW_METALLIC_ROUGHNESS = 0, PBR_WORKFLOW_SPECULAR_GLOSINESS = 1 };
struct PushConstBlockMaterial {
glm::vec4 baseColorFactor;
glm::vec4 emissiveFactor;
glm::vec4 diffuseFactor;
glm::vec4 specularFactor;
float workflow;
int colorTextureSet;
int PhysicalDescriptorTextureSet;
int normalTextureSet;
int occlusionTextureSet;
int emissiveTextureSet;
float metallicFactor;
float roughnessFactor;
float alphaMask;
float alphaMaskCutoff;
} pushConstBlockMaterial;
std::map<std::string, std::string> environments;
std::string selectedEnvironment = "papermill";
#if !defined(_WIN32)
std::map<std::string, std::string> scenes;
std::string selectedScene = "DamagedHelmet";
#endif
int32_t debugViewInputs = 0;
int32_t debugViewEquation = 0;
VulkanExample() : VulkanExampleBase()
{
title = "Vulkan glTF 2.0 PBR - � Sascha Willems (www.saschawillems.de)";
#if defined(TINYGLTF_ENABLE_DRACO)
std::cout << "Draco mesh compression is enabled" << std::endl;
#endif
}
~VulkanExample()
{
vkDestroyPipeline(device, pipelines.skybox, nullptr);
vkDestroyPipeline(device, pipelines.pbr, nullptr);
vkDestroyPipeline(device, pipelines.pbrAlphaBlend, nullptr);
vkDestroyPipelineLayout(device, pipelineLayout, nullptr);
vkDestroyDescriptorSetLayout(device, descriptorSetLayouts.scene, nullptr);
vkDestroyDescriptorSetLayout(device, descriptorSetLayouts.material, nullptr);
vkDestroyDescriptorSetLayout(device, descriptorSetLayouts.node, nullptr);
models.scene.destroy(device);
models.skybox.destroy(device);
for (auto buffer : uniformBuffers) {
buffer.params.destroy();
buffer.scene.destroy();
buffer.skybox.destroy();
}
for (auto fence : waitFences) {
vkDestroyFence(device, fence, nullptr);
}
for (auto semaphore : renderCompleteSemaphores) {
vkDestroySemaphore(device, semaphore, nullptr);
}
for (auto semaphore : presentCompleteSemaphores) {
vkDestroySemaphore(device, semaphore, nullptr);
}
textures.environmentCube.destroy();
textures.irradianceCube.destroy();
textures.prefilteredCube.destroy();
textures.lutBrdf.destroy();
textures.empty.destroy();
delete ui;
}
void renderNode(vkglTF::Node *node, uint32_t cbIndex, vkglTF::Material::AlphaMode alphaMode) {
if (node->mesh) {
// Render mesh primitives
for (vkglTF::Primitive * primitive : node->mesh->primitives) {
if (primitive->material.alphaMode == alphaMode) {
const std::vector<VkDescriptorSet> descriptorsets = {
descriptorSets[cbIndex].scene,
primitive->material.descriptorSet,
node->mesh->uniformBuffer.descriptorSet,
};
vkCmdBindDescriptorSets(commandBuffers[cbIndex], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, static_cast<uint32_t>(descriptorsets.size()), descriptorsets.data(), 0, NULL);
// Pass material parameters as push constants
PushConstBlockMaterial pushConstBlockMaterial{};
pushConstBlockMaterial.emissiveFactor = primitive->material.emissiveFactor;
// To save push constant space, availabilty and texture coordiante set are combined
// -1 = texture not used for this material, >= 0 texture used and index of texture coordinate set
pushConstBlockMaterial.colorTextureSet = primitive->material.baseColorTexture != nullptr ? primitive->material.texCoordSets.baseColor : -1;
pushConstBlockMaterial.normalTextureSet = primitive->material.normalTexture != nullptr ? primitive->material.texCoordSets.normal : -1;
pushConstBlockMaterial.occlusionTextureSet = primitive->material.occlusionTexture != nullptr ? primitive->material.texCoordSets.occlusion : -1;
pushConstBlockMaterial.emissiveTextureSet = primitive->material.emissiveTexture != nullptr ? primitive->material.texCoordSets.emissive : -1;
pushConstBlockMaterial.alphaMask = static_cast<float>(primitive->material.alphaMode == vkglTF::Material::ALPHAMODE_MASK);
pushConstBlockMaterial.alphaMaskCutoff = primitive->material.alphaCutoff;
// TODO: glTF specs states that metallic roughness should be preferred, even if specular glosiness is present
if (primitive->material.pbrWorkflows.metallicRoughness) {
// Metallic roughness workflow
pushConstBlockMaterial.workflow = static_cast<float>(PBR_WORKFLOW_METALLIC_ROUGHNESS);
pushConstBlockMaterial.baseColorFactor = primitive->material.baseColorFactor;
pushConstBlockMaterial.metallicFactor = primitive->material.metallicFactor;
pushConstBlockMaterial.roughnessFactor = primitive->material.roughnessFactor;
pushConstBlockMaterial.PhysicalDescriptorTextureSet = primitive->material.metallicRoughnessTexture != nullptr ? primitive->material.texCoordSets.metallicRoughness : -1;
pushConstBlockMaterial.colorTextureSet = primitive->material.baseColorTexture != nullptr ? primitive->material.texCoordSets.baseColor : -1;
}
if (primitive->material.pbrWorkflows.specularGlossiness) {
// Specular glossiness workflow
pushConstBlockMaterial.workflow = static_cast<float>(PBR_WORKFLOW_SPECULAR_GLOSINESS);
pushConstBlockMaterial.PhysicalDescriptorTextureSet = primitive->material.extension.specularGlossinessTexture != nullptr ? primitive->material.texCoordSets.specularGlossiness : -1;
pushConstBlockMaterial.colorTextureSet = primitive->material.extension.diffuseTexture != nullptr ? primitive->material.texCoordSets.baseColor : -1;
pushConstBlockMaterial.diffuseFactor = primitive->material.extension.diffuseFactor;
pushConstBlockMaterial.specularFactor = glm::vec4(primitive->material.extension.specularFactor, 1.0f);
}
vkCmdPushConstants(commandBuffers[cbIndex], pipelineLayout, VK_SHADER_STAGE_FRAGMENT_BIT, 0, sizeof(PushConstBlockMaterial), &pushConstBlockMaterial);
if (primitive->hasIndices) {
vkCmdDrawIndexed(commandBuffers[cbIndex], primitive->indexCount, 1, primitive->firstIndex, 0, 0);
} else {
vkCmdDraw(commandBuffers[cbIndex], primitive->vertexCount, 1, 0, 0);
}
}
}
};
for (auto child : node->children) {
renderNode(child, cbIndex, alphaMode);
}
}
void recordCommandBuffers()
{
VkCommandBufferBeginInfo cmdBufferBeginInfo{};
cmdBufferBeginInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
VkClearValue clearValues[3];
if (settings.multiSampling) {
clearValues[0].color = { { 0.0f, 0.0f, 0.0f, 1.0f } };
clearValues[1].color = { { 0.0f, 0.0f, 0.0f, 1.0f } };
clearValues[2].depthStencil = { 1.0f, 0 };
}
else {
clearValues[0].color = { { 0.0f, 0.0f, 0.0f, 1.0f } };
clearValues[1].depthStencil = { 1.0f, 0 };
}
VkRenderPassBeginInfo renderPassBeginInfo{};
renderPassBeginInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
renderPassBeginInfo.renderPass = renderPass;
renderPassBeginInfo.renderArea.offset.x = 0;
renderPassBeginInfo.renderArea.offset.y = 0;
renderPassBeginInfo.renderArea.extent.width = width;
renderPassBeginInfo.renderArea.extent.height = height;
renderPassBeginInfo.clearValueCount = settings.multiSampling ? 3 : 2;
renderPassBeginInfo.pClearValues = clearValues;
for (size_t i = 0; i < commandBuffers.size(); ++i) {
renderPassBeginInfo.framebuffer = frameBuffers[i];
VkCommandBuffer currentCB = commandBuffers[i];
VK_CHECK_RESULT(vkBeginCommandBuffer(currentCB, &cmdBufferBeginInfo));
vkCmdBeginRenderPass(currentCB, &renderPassBeginInfo, VK_SUBPASS_CONTENTS_INLINE);
VkViewport viewport{};
viewport.width = (float)width;
viewport.height = (float)height;
viewport.minDepth = 0.0f;
viewport.maxDepth = 1.0f;
vkCmdSetViewport(currentCB, 0, 1, &viewport);
VkRect2D scissor{};
scissor.extent = { width, height };
vkCmdSetScissor(currentCB, 0, 1, &scissor);
VkDeviceSize offsets[1] = { 0 };
if (displayBackground) {
vkCmdBindDescriptorSets(currentCB, VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSets[i].skybox, 0, nullptr);
vkCmdBindPipeline(currentCB, VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.skybox);
models.skybox.draw(currentCB);
}
vkCmdBindPipeline(currentCB, VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.pbr);
vkglTF::Model &model = models.scene;
vkCmdBindVertexBuffers(currentCB, 0, 1, &model.vertices.buffer, offsets);
if (model.indices.buffer != VK_NULL_HANDLE) {
vkCmdBindIndexBuffer(currentCB, model.indices.buffer, 0, VK_INDEX_TYPE_UINT32);
}
// Opaque primitives first
for (auto node : model.nodes) {
renderNode(node, i, vkglTF::Material::ALPHAMODE_OPAQUE);
}
// Alpha masked primitives
for (auto node : model.nodes) {
renderNode(node, i, vkglTF::Material::ALPHAMODE_MASK);
}
// Transparent primitives
// TODO: Correct depth sorting
vkCmdBindPipeline(currentCB, VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.pbrAlphaBlend);
for (auto node : model.nodes) {
renderNode(node, i, vkglTF::Material::ALPHAMODE_BLEND);
}
// User interface
ui->draw(currentCB);
vkCmdEndRenderPass(currentCB);
VK_CHECK_RESULT(vkEndCommandBuffer(currentCB));
}
}
void loadScene(std::string filename)
{
std::cout << "Loading scene from " << filename << std::endl;
models.scene.destroy(device);
animationIndex = 0;
animationTimer = 0.0f;
models.scene.loadFromFile(filename, vulkanDevice, queue);
camera.setPosition({ 0.0f, 0.0f, 1.0f });
camera.setRotation({ 0.0f, 0.0f, 0.0f });
}
void loadEnvironment(std::string filename)
{
std::cout << "Loading environment from " << filename << std::endl;
if (textures.environmentCube.image) {
textures.environmentCube.destroy();
textures.irradianceCube.destroy();
textures.prefilteredCube.destroy();
}
textures.environmentCube.loadFromFile(filename, VK_FORMAT_R16G16B16A16_SFLOAT, vulkanDevice, queue);
generateCubemaps();
}
void loadAssets()
{
#if defined(VK_USE_PLATFORM_ANDROID_KHR)
tinygltf::asset_manager = androidApp->activity->assetManager;
readDirectory(assetpath + "models", "*.gltf", scenes, true);
#else
const std::string assetpath = "./../data/";
struct stat info;
if (stat(assetpath.c_str(), &info) != 0) {
std::string msg = "Could not locate asset path in \"" + assetpath + "\".\nMake sure binary is run from correct relative directory!";
std::cerr << msg << std::endl;
exit(-1);
}
#endif
readDirectory(assetpath + "environments", "*.ktx", environments, false);
textures.empty.loadFromFile(assetpath + "textures/empty.ktx", VK_FORMAT_R8G8B8A8_UNORM, vulkanDevice, queue);
std::string sceneFile = assetpath + "models/DamagedHelmet/glTF-Embedded/DamagedHelmet.gltf";
std::string envMapFile = assetpath + "environments/papermill.ktx";
for (size_t i = 0; i < args.size(); i++) {
if (std::string(args[i]).find(".gltf") != std::string::npos) {
std::ifstream file(args[i]);
if (file.good()) {
sceneFile = args[i];
} else {
std::cout << "could not load \"" << args[i] << "\"" << std::endl;
}
}
if (std::string(args[i]).find(".ktx") != std::string::npos) {
std::ifstream file(args[i]);
if (file.good()) {
envMapFile = args[i];
}
else {
std::cout << "could not load \"" << args[i] << "\"" << std::endl;
}
}
}
loadScene(sceneFile.c_str());
models.skybox.loadFromFile(assetpath + "models/Box/glTF-Embedded/Box.gltf", vulkanDevice, queue);
loadEnvironment(envMapFile.c_str());
}
void setupNodeDescriptorSet(vkglTF::Node *node) {
if (node->mesh) {
VkDescriptorSetAllocateInfo descriptorSetAllocInfo{};
descriptorSetAllocInfo.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO;
descriptorSetAllocInfo.descriptorPool = descriptorPool;
descriptorSetAllocInfo.pSetLayouts = &descriptorSetLayouts.node;
descriptorSetAllocInfo.descriptorSetCount = 1;
VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &descriptorSetAllocInfo, &node->mesh->uniformBuffer.descriptorSet));
VkWriteDescriptorSet writeDescriptorSet{};
writeDescriptorSet.sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
writeDescriptorSet.descriptorType = VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER;
writeDescriptorSet.descriptorCount = 1;
writeDescriptorSet.dstSet = node->mesh->uniformBuffer.descriptorSet;
writeDescriptorSet.dstBinding = 0;
writeDescriptorSet.pBufferInfo = &node->mesh->uniformBuffer.descriptor;
vkUpdateDescriptorSets(device, 1, &writeDescriptorSet, 0, nullptr);
}
for (auto& child : node->children) {
setupNodeDescriptorSet(child);
}
}
void setupDescriptors()
{
/*
Descriptor Pool
*/
uint32_t imageSamplerCount = 0;
uint32_t materialCount = 0;
uint32_t meshCount = 0;
// Environment samplers (radiance, irradiance, brdf lut)
imageSamplerCount += 3;
std::vector<vkglTF::Model*> modellist = { &models.skybox, &models.scene };
for (auto &model : modellist) {
for (auto &material : model->materials) {
imageSamplerCount += 5;
materialCount++;
}
for (auto node : model->linearNodes) {
if (node->mesh) {
meshCount++;
}
}
}
std::vector<VkDescriptorPoolSize> poolSizes = {
{ VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, (4 + meshCount) * swapChain.imageCount },
{ VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, imageSamplerCount * swapChain.imageCount }
};
VkDescriptorPoolCreateInfo descriptorPoolCI{};
descriptorPoolCI.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO;
descriptorPoolCI.poolSizeCount = 2;
descriptorPoolCI.pPoolSizes = poolSizes.data();
descriptorPoolCI.maxSets = (2 + materialCount + meshCount) * swapChain.imageCount;
VK_CHECK_RESULT(vkCreateDescriptorPool(device, &descriptorPoolCI, nullptr, &descriptorPool));
/*
Descriptor sets
*/
// Scene (matrices and environment maps)
{
std::vector<VkDescriptorSetLayoutBinding> setLayoutBindings = {
{ 0, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 1, VK_SHADER_STAGE_VERTEX_BIT | VK_SHADER_STAGE_FRAGMENT_BIT, nullptr },
{ 1, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 1, VK_SHADER_STAGE_FRAGMENT_BIT, nullptr },
{ 2, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1, VK_SHADER_STAGE_FRAGMENT_BIT, nullptr },
{ 3, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1, VK_SHADER_STAGE_FRAGMENT_BIT, nullptr },
{ 4, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1, VK_SHADER_STAGE_FRAGMENT_BIT, nullptr },
};
VkDescriptorSetLayoutCreateInfo descriptorSetLayoutCI{};
descriptorSetLayoutCI.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO;
descriptorSetLayoutCI.pBindings = setLayoutBindings.data();
descriptorSetLayoutCI.bindingCount = static_cast<uint32_t>(setLayoutBindings.size());
VK_CHECK_RESULT(vkCreateDescriptorSetLayout(device, &descriptorSetLayoutCI, nullptr, &descriptorSetLayouts.scene));
for (auto i = 0; i < descriptorSets.size(); i++) {
VkDescriptorSetAllocateInfo descriptorSetAllocInfo{};
descriptorSetAllocInfo.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO;
descriptorSetAllocInfo.descriptorPool = descriptorPool;
descriptorSetAllocInfo.pSetLayouts = &descriptorSetLayouts.scene;
descriptorSetAllocInfo.descriptorSetCount = 1;
VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &descriptorSetAllocInfo, &descriptorSets[i].scene));
std::array<VkWriteDescriptorSet, 5> writeDescriptorSets{};
writeDescriptorSets[0].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
writeDescriptorSets[0].descriptorType = VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER;
writeDescriptorSets[0].descriptorCount = 1;
writeDescriptorSets[0].dstSet = descriptorSets[i].scene;
writeDescriptorSets[0].dstBinding = 0;
writeDescriptorSets[0].pBufferInfo = &uniformBuffers[i].scene.descriptor;
writeDescriptorSets[1].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
writeDescriptorSets[1].descriptorType = VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER;
writeDescriptorSets[1].descriptorCount = 1;
writeDescriptorSets[1].dstSet = descriptorSets[i].scene;
writeDescriptorSets[1].dstBinding = 1;
writeDescriptorSets[1].pBufferInfo = &uniformBuffers[i].params.descriptor;
writeDescriptorSets[2].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
writeDescriptorSets[2].descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
writeDescriptorSets[2].descriptorCount = 1;
writeDescriptorSets[2].dstSet = descriptorSets[i].scene;
writeDescriptorSets[2].dstBinding = 2;
writeDescriptorSets[2].pImageInfo = &textures.irradianceCube.descriptor;
writeDescriptorSets[3].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
writeDescriptorSets[3].descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
writeDescriptorSets[3].descriptorCount = 1;
writeDescriptorSets[3].dstSet = descriptorSets[i].scene;
writeDescriptorSets[3].dstBinding = 3;
writeDescriptorSets[3].pImageInfo = &textures.prefilteredCube.descriptor;
writeDescriptorSets[4].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
writeDescriptorSets[4].descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
writeDescriptorSets[4].descriptorCount = 1;
writeDescriptorSets[4].dstSet = descriptorSets[i].scene;
writeDescriptorSets[4].dstBinding = 4;
writeDescriptorSets[4].pImageInfo = &textures.lutBrdf.descriptor;
vkUpdateDescriptorSets(device, static_cast<uint32_t>(writeDescriptorSets.size()), writeDescriptorSets.data(), 0, NULL);
}
}
// Material (samplers)
{
std::vector<VkDescriptorSetLayoutBinding> setLayoutBindings = {
{ 0, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1, VK_SHADER_STAGE_FRAGMENT_BIT, nullptr },
{ 1, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1, VK_SHADER_STAGE_FRAGMENT_BIT, nullptr },
{ 2, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1, VK_SHADER_STAGE_FRAGMENT_BIT, nullptr },
{ 3, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1, VK_SHADER_STAGE_FRAGMENT_BIT, nullptr },
{ 4, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1, VK_SHADER_STAGE_FRAGMENT_BIT, nullptr },
};
VkDescriptorSetLayoutCreateInfo descriptorSetLayoutCI{};
descriptorSetLayoutCI.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO;
descriptorSetLayoutCI.pBindings = setLayoutBindings.data();
descriptorSetLayoutCI.bindingCount = static_cast<uint32_t>(setLayoutBindings.size());
VK_CHECK_RESULT(vkCreateDescriptorSetLayout(device, &descriptorSetLayoutCI, nullptr, &descriptorSetLayouts.material));
// Per-Material descriptor sets
for (auto &material : models.scene.materials) {
VkDescriptorSetAllocateInfo descriptorSetAllocInfo{};
descriptorSetAllocInfo.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO;
descriptorSetAllocInfo.descriptorPool = descriptorPool;
descriptorSetAllocInfo.pSetLayouts = &descriptorSetLayouts.material;
descriptorSetAllocInfo.descriptorSetCount = 1;
VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &descriptorSetAllocInfo, &material.descriptorSet));
std::vector<VkDescriptorImageInfo> imageDescriptors = {
textures.empty.descriptor,
textures.empty.descriptor,
material.normalTexture ? material.normalTexture->descriptor : textures.empty.descriptor,
material.occlusionTexture ? material.occlusionTexture->descriptor : textures.empty.descriptor,
material.emissiveTexture ? material.emissiveTexture->descriptor : textures.empty.descriptor
};
// TODO: glTF specs states that metallic roughness should be preferred, even if specular glosiness is present
if (material.pbrWorkflows.metallicRoughness) {
if (material.baseColorTexture) {
imageDescriptors[0] = material.baseColorTexture->descriptor;
}
if (material.metallicRoughnessTexture) {
imageDescriptors[1] = material.metallicRoughnessTexture->descriptor;
}
}
if (material.pbrWorkflows.specularGlossiness) {
if (material.extension.diffuseTexture) {
imageDescriptors[0] = material.extension.diffuseTexture->descriptor;
}
if (material.extension.specularGlossinessTexture) {
imageDescriptors[1] = material.extension.specularGlossinessTexture->descriptor;
}
}
std::array<VkWriteDescriptorSet, 5> writeDescriptorSets{};
for (size_t i = 0; i < imageDescriptors.size(); i++) {
writeDescriptorSets[i].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
writeDescriptorSets[i].descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
writeDescriptorSets[i].descriptorCount = 1;
writeDescriptorSets[i].dstSet = material.descriptorSet;
writeDescriptorSets[i].dstBinding = static_cast<uint32_t>(i);
writeDescriptorSets[i].pImageInfo = &imageDescriptors[i];
}
vkUpdateDescriptorSets(device, static_cast<uint32_t>(writeDescriptorSets.size()), writeDescriptorSets.data(), 0, NULL);
}
// Model node (matrices)
{
std::vector<VkDescriptorSetLayoutBinding> setLayoutBindings = {
{ 0, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 1, VK_SHADER_STAGE_VERTEX_BIT, nullptr },
};
VkDescriptorSetLayoutCreateInfo descriptorSetLayoutCI{};
descriptorSetLayoutCI.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO;
descriptorSetLayoutCI.pBindings = setLayoutBindings.data();
descriptorSetLayoutCI.bindingCount = static_cast<uint32_t>(setLayoutBindings.size());
VK_CHECK_RESULT(vkCreateDescriptorSetLayout(device, &descriptorSetLayoutCI, nullptr, &descriptorSetLayouts.node));
// Per-Node descriptor set
for (auto &node : models.scene.nodes) {
setupNodeDescriptorSet(node);
}
}
}
// Skybox (fixed set)
for (auto i = 0; i < uniformBuffers.size(); i++) {
VkDescriptorSetAllocateInfo descriptorSetAllocInfo{};
descriptorSetAllocInfo.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO;
descriptorSetAllocInfo.descriptorPool = descriptorPool;
descriptorSetAllocInfo.pSetLayouts = &descriptorSetLayouts.scene;
descriptorSetAllocInfo.descriptorSetCount = 1;
VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &descriptorSetAllocInfo, &descriptorSets[i].skybox));
std::array<VkWriteDescriptorSet, 3> writeDescriptorSets{};
writeDescriptorSets[0].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
writeDescriptorSets[0].descriptorType = VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER;
writeDescriptorSets[0].descriptorCount = 1;
writeDescriptorSets[0].dstSet = descriptorSets[i].skybox;
writeDescriptorSets[0].dstBinding = 0;
writeDescriptorSets[0].pBufferInfo = &uniformBuffers[i].skybox.descriptor;
writeDescriptorSets[1].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
writeDescriptorSets[1].descriptorType = VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER;
writeDescriptorSets[1].descriptorCount = 1;
writeDescriptorSets[1].dstSet = descriptorSets[i].skybox;
writeDescriptorSets[1].dstBinding = 1;
writeDescriptorSets[1].pBufferInfo = &uniformBuffers[i].params.descriptor;
writeDescriptorSets[2].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
writeDescriptorSets[2].descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
writeDescriptorSets[2].descriptorCount = 1;
writeDescriptorSets[2].dstSet = descriptorSets[i].skybox;
writeDescriptorSets[2].dstBinding = 2;
writeDescriptorSets[2].pImageInfo = &textures.prefilteredCube.descriptor;
vkUpdateDescriptorSets(device, static_cast<uint32_t>(writeDescriptorSets.size()), writeDescriptorSets.data(), 0, nullptr);
}
}
void preparePipelines()
{
VkPipelineInputAssemblyStateCreateInfo inputAssemblyStateCI{};
inputAssemblyStateCI.sType = VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO;
inputAssemblyStateCI.topology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST;
VkPipelineRasterizationStateCreateInfo rasterizationStateCI{};
rasterizationStateCI.sType = VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO;
rasterizationStateCI.polygonMode = VK_POLYGON_MODE_FILL;
rasterizationStateCI.cullMode = VK_CULL_MODE_BACK_BIT;
rasterizationStateCI.frontFace = VK_FRONT_FACE_COUNTER_CLOCKWISE;
rasterizationStateCI.lineWidth = 1.0f;
VkPipelineColorBlendAttachmentState blendAttachmentState{};
blendAttachmentState.colorWriteMask = VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT;
blendAttachmentState.blendEnable = VK_FALSE;
VkPipelineColorBlendStateCreateInfo colorBlendStateCI{};
colorBlendStateCI.sType = VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO;
colorBlendStateCI.attachmentCount = 1;
colorBlendStateCI.pAttachments = &blendAttachmentState;
VkPipelineDepthStencilStateCreateInfo depthStencilStateCI{};
depthStencilStateCI.sType = VK_STRUCTURE_TYPE_PIPELINE_DEPTH_STENCIL_STATE_CREATE_INFO;
depthStencilStateCI.depthTestEnable = VK_FALSE;
depthStencilStateCI.depthWriteEnable = VK_FALSE;
depthStencilStateCI.depthCompareOp = VK_COMPARE_OP_LESS_OR_EQUAL;
depthStencilStateCI.front = depthStencilStateCI.back;
depthStencilStateCI.back.compareOp = VK_COMPARE_OP_ALWAYS;
VkPipelineViewportStateCreateInfo viewportStateCI{};
viewportStateCI.sType = VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO;
viewportStateCI.viewportCount = 1;
viewportStateCI.scissorCount = 1;
VkPipelineMultisampleStateCreateInfo multisampleStateCI{};
multisampleStateCI.sType = VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO;
if (settings.multiSampling) {
multisampleStateCI.rasterizationSamples = settings.sampleCount;
}
std::vector<VkDynamicState> dynamicStateEnables = {
VK_DYNAMIC_STATE_VIEWPORT,
VK_DYNAMIC_STATE_SCISSOR
};
VkPipelineDynamicStateCreateInfo dynamicStateCI{};
dynamicStateCI.sType = VK_STRUCTURE_TYPE_PIPELINE_DYNAMIC_STATE_CREATE_INFO;
dynamicStateCI.pDynamicStates = dynamicStateEnables.data();
dynamicStateCI.dynamicStateCount = static_cast<uint32_t>(dynamicStateEnables.size());
// Pipeline layout
const std::vector<VkDescriptorSetLayout> setLayouts = {
descriptorSetLayouts.scene, descriptorSetLayouts.material, descriptorSetLayouts.node
};
VkPipelineLayoutCreateInfo pipelineLayoutCI{};
pipelineLayoutCI.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO;
pipelineLayoutCI.setLayoutCount = static_cast<uint32_t>(setLayouts.size());
pipelineLayoutCI.pSetLayouts = setLayouts.data();
VkPushConstantRange pushConstantRange{};
pushConstantRange.size = sizeof(PushConstBlockMaterial);
pushConstantRange.stageFlags = VK_SHADER_STAGE_FRAGMENT_BIT;
pipelineLayoutCI.pushConstantRangeCount = 1;
pipelineLayoutCI.pPushConstantRanges = &pushConstantRange;
VK_CHECK_RESULT(vkCreatePipelineLayout(device, &pipelineLayoutCI, nullptr, &pipelineLayout));
// Vertex bindings an attributes
VkVertexInputBindingDescription vertexInputBinding = { 0, sizeof(vkglTF::Model::Vertex), VK_VERTEX_INPUT_RATE_VERTEX };
std::vector<VkVertexInputAttributeDescription> vertexInputAttributes = {
{ 0, 0, VK_FORMAT_R32G32B32_SFLOAT, 0 },
{ 1, 0, VK_FORMAT_R32G32B32_SFLOAT, sizeof(float) * 3 },
{ 2, 0, VK_FORMAT_R32G32_SFLOAT, sizeof(float) * 6 },
{ 3, 0, VK_FORMAT_R32G32_SFLOAT, sizeof(float) * 8 },
{ 4, 0, VK_FORMAT_R32G32B32A32_SFLOAT, sizeof(float) * 10 },
{ 5, 0, VK_FORMAT_R32G32B32A32_SFLOAT, sizeof(float) * 14 }
};
VkPipelineVertexInputStateCreateInfo vertexInputStateCI{};
vertexInputStateCI.sType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO;
vertexInputStateCI.vertexBindingDescriptionCount = 1;
vertexInputStateCI.pVertexBindingDescriptions = &vertexInputBinding;
vertexInputStateCI.vertexAttributeDescriptionCount = static_cast<uint32_t>(vertexInputAttributes.size());
vertexInputStateCI.pVertexAttributeDescriptions = vertexInputAttributes.data();
// Pipelines
std::array<VkPipelineShaderStageCreateInfo, 2> shaderStages;
VkGraphicsPipelineCreateInfo pipelineCI{};
pipelineCI.sType = VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO;
pipelineCI.layout = pipelineLayout;
pipelineCI.renderPass = renderPass;
pipelineCI.pInputAssemblyState = &inputAssemblyStateCI;
pipelineCI.pVertexInputState = &vertexInputStateCI;
pipelineCI.pRasterizationState = &rasterizationStateCI;
pipelineCI.pColorBlendState = &colorBlendStateCI;
pipelineCI.pMultisampleState = &multisampleStateCI;
pipelineCI.pViewportState = &viewportStateCI;
pipelineCI.pDepthStencilState = &depthStencilStateCI;
pipelineCI.pDynamicState = &dynamicStateCI;
pipelineCI.stageCount = static_cast<uint32_t>(shaderStages.size());
pipelineCI.pStages = shaderStages.data();
if (settings.multiSampling) {
multisampleStateCI.rasterizationSamples = settings.sampleCount;
}
// Skybox pipeline (background cube)
shaderStages = {
loadShader(device, "skybox.vert.spv", VK_SHADER_STAGE_VERTEX_BIT),
loadShader(device, "skybox.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT)
};
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCI, nullptr, &pipelines.skybox));
for (auto shaderStage : shaderStages) {
vkDestroyShaderModule(device, shaderStage.module, nullptr);
}
// PBR pipeline
shaderStages = {
loadShader(device, "pbr.vert.spv", VK_SHADER_STAGE_VERTEX_BIT),
loadShader(device, "pbr_khr.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT)
};
depthStencilStateCI.depthWriteEnable = VK_TRUE;
depthStencilStateCI.depthTestEnable = VK_TRUE;
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCI, nullptr, &pipelines.pbr));
rasterizationStateCI.cullMode = VK_CULL_MODE_NONE;
blendAttachmentState.blendEnable = VK_TRUE;
blendAttachmentState.colorWriteMask = VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT;
blendAttachmentState.srcColorBlendFactor = VK_BLEND_FACTOR_SRC_ALPHA;
blendAttachmentState.dstColorBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA;
blendAttachmentState.colorBlendOp = VK_BLEND_OP_ADD;
blendAttachmentState.srcAlphaBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA;
blendAttachmentState.dstAlphaBlendFactor = VK_BLEND_FACTOR_ZERO;
blendAttachmentState.alphaBlendOp = VK_BLEND_OP_ADD;
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCI, nullptr, &pipelines.pbrAlphaBlend));
for (auto shaderStage : shaderStages) {
vkDestroyShaderModule(device, shaderStage.module, nullptr);
}
}
/*
Generate a BRDF integration map storing roughness/NdotV as a look-up-table
*/
void generateBRDFLUT()
{
auto tStart = std::chrono::high_resolution_clock::now();
const VkFormat format = VK_FORMAT_R16G16_SFLOAT;
const int32_t dim = 512;
// Image
VkImageCreateInfo imageCI{};
imageCI.sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO;
imageCI.imageType = VK_IMAGE_TYPE_2D;
imageCI.format = format;
imageCI.extent.width = dim;
imageCI.extent.height = dim;
imageCI.extent.depth = 1;
imageCI.mipLevels = 1;
imageCI.arrayLayers = 1;
imageCI.samples = VK_SAMPLE_COUNT_1_BIT;
imageCI.tiling = VK_IMAGE_TILING_OPTIMAL;
imageCI.usage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT | VK_IMAGE_USAGE_SAMPLED_BIT;
VK_CHECK_RESULT(vkCreateImage(device, &imageCI, nullptr, &textures.lutBrdf.image));
VkMemoryRequirements memReqs;
vkGetImageMemoryRequirements(device, textures.lutBrdf.image, &memReqs);
VkMemoryAllocateInfo memAllocInfo{};
memAllocInfo.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
memAllocInfo.allocationSize = memReqs.size;
memAllocInfo.memoryTypeIndex = vulkanDevice->getMemoryType(memReqs.memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);
VK_CHECK_RESULT(vkAllocateMemory(device, &memAllocInfo, nullptr, &textures.lutBrdf.deviceMemory));
VK_CHECK_RESULT(vkBindImageMemory(device, textures.lutBrdf.image, textures.lutBrdf.deviceMemory, 0));
// View
VkImageViewCreateInfo viewCI{};
viewCI.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
viewCI.viewType = VK_IMAGE_VIEW_TYPE_2D;
viewCI.format = format;
viewCI.subresourceRange = {};
viewCI.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
viewCI.subresourceRange.levelCount = 1;
viewCI.subresourceRange.layerCount = 1;
viewCI.image = textures.lutBrdf.image;
VK_CHECK_RESULT(vkCreateImageView(device, &viewCI, nullptr, &textures.lutBrdf.view));
// Sampler
VkSamplerCreateInfo samplerCI{};
samplerCI.sType = VK_STRUCTURE_TYPE_SAMPLER_CREATE_INFO;
samplerCI.magFilter = VK_FILTER_LINEAR;
samplerCI.minFilter = VK_FILTER_LINEAR;
samplerCI.mipmapMode = VK_SAMPLER_MIPMAP_MODE_LINEAR;
samplerCI.addressModeU = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
samplerCI.addressModeV = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
samplerCI.addressModeW = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
samplerCI.minLod = 0.0f;
samplerCI.maxLod = 1.0f;
samplerCI.maxAnisotropy = 1.0f;
samplerCI.borderColor = VK_BORDER_COLOR_FLOAT_OPAQUE_WHITE;
VK_CHECK_RESULT(vkCreateSampler(device, &samplerCI, nullptr, &textures.lutBrdf.sampler));
// FB, Att, RP, Pipe, etc.
VkAttachmentDescription attDesc{};
// Color attachment
attDesc.format = format;
attDesc.samples = VK_SAMPLE_COUNT_1_BIT;
attDesc.loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
attDesc.storeOp = VK_ATTACHMENT_STORE_OP_STORE;
attDesc.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
attDesc.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
attDesc.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
attDesc.finalLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
VkAttachmentReference colorReference = { 0, VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL };
VkSubpassDescription subpassDescription{};
subpassDescription.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
subpassDescription.colorAttachmentCount = 1;
subpassDescription.pColorAttachments = &colorReference;
// Use subpass dependencies for layout transitions
std::array<VkSubpassDependency, 2> dependencies;
dependencies[0].srcSubpass = VK_SUBPASS_EXTERNAL;
dependencies[0].dstSubpass = 0;
dependencies[0].srcStageMask = VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT;
dependencies[0].dstStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
dependencies[0].srcAccessMask = VK_ACCESS_MEMORY_READ_BIT;
dependencies[0].dstAccessMask = VK_ACCESS_COLOR_ATTACHMENT_READ_BIT | VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
dependencies[0].dependencyFlags = VK_DEPENDENCY_BY_REGION_BIT;
dependencies[1].srcSubpass = 0;
dependencies[1].dstSubpass = VK_SUBPASS_EXTERNAL;
dependencies[1].srcStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
dependencies[1].dstStageMask = VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT;
dependencies[1].srcAccessMask = VK_ACCESS_COLOR_ATTACHMENT_READ_BIT | VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
dependencies[1].dstAccessMask = VK_ACCESS_MEMORY_READ_BIT;
dependencies[1].dependencyFlags = VK_DEPENDENCY_BY_REGION_BIT;
// Create the actual renderpass
VkRenderPassCreateInfo renderPassCI{};
renderPassCI.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
renderPassCI.attachmentCount = 1;
renderPassCI.pAttachments = &attDesc;
renderPassCI.subpassCount = 1;
renderPassCI.pSubpasses = &subpassDescription;
renderPassCI.dependencyCount = 2;
renderPassCI.pDependencies = dependencies.data();
VkRenderPass renderpass;
VK_CHECK_RESULT(vkCreateRenderPass(device, &renderPassCI, nullptr, &renderpass));
VkFramebufferCreateInfo framebufferCI{};
framebufferCI.sType = VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO;
framebufferCI.renderPass = renderpass;
framebufferCI.attachmentCount = 1;
framebufferCI.pAttachments = &textures.lutBrdf.view;
framebufferCI.width = dim;
framebufferCI.height = dim;
framebufferCI.layers = 1;
VkFramebuffer framebuffer;
VK_CHECK_RESULT(vkCreateFramebuffer(device, &framebufferCI, nullptr, &framebuffer));
// Desriptors
VkDescriptorSetLayout descriptorsetlayout;
VkDescriptorSetLayoutCreateInfo descriptorSetLayoutCI{};
descriptorSetLayoutCI.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO;
VK_CHECK_RESULT(vkCreateDescriptorSetLayout(device, &descriptorSetLayoutCI, nullptr, &descriptorsetlayout));
// Pipeline layout
VkPipelineLayout pipelinelayout;
VkPipelineLayoutCreateInfo pipelineLayoutCI{};
pipelineLayoutCI.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO;
pipelineLayoutCI.setLayoutCount = 1;
pipelineLayoutCI.pSetLayouts = &descriptorsetlayout;
VK_CHECK_RESULT(vkCreatePipelineLayout(device, &pipelineLayoutCI, nullptr, &pipelinelayout));
// Pipeline
VkPipelineInputAssemblyStateCreateInfo inputAssemblyStateCI{};
inputAssemblyStateCI.sType = VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO;
inputAssemblyStateCI.topology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST;
VkPipelineRasterizationStateCreateInfo rasterizationStateCI{};
rasterizationStateCI.sType = VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO;
rasterizationStateCI.polygonMode = VK_POLYGON_MODE_FILL;
rasterizationStateCI.cullMode = VK_CULL_MODE_NONE;
rasterizationStateCI.frontFace = VK_FRONT_FACE_COUNTER_CLOCKWISE;
rasterizationStateCI.lineWidth = 1.0f;
VkPipelineColorBlendAttachmentState blendAttachmentState{};
blendAttachmentState.colorWriteMask = VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT;
blendAttachmentState.blendEnable = VK_FALSE;
VkPipelineColorBlendStateCreateInfo colorBlendStateCI{};
colorBlendStateCI.sType = VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO;
colorBlendStateCI.attachmentCount = 1;
colorBlendStateCI.pAttachments = &blendAttachmentState;
VkPipelineDepthStencilStateCreateInfo depthStencilStateCI{};
depthStencilStateCI.sType = VK_STRUCTURE_TYPE_PIPELINE_DEPTH_STENCIL_STATE_CREATE_INFO;
depthStencilStateCI.depthTestEnable = VK_FALSE;
depthStencilStateCI.depthWriteEnable = VK_FALSE;
depthStencilStateCI.depthCompareOp = VK_COMPARE_OP_LESS_OR_EQUAL;
depthStencilStateCI.front = depthStencilStateCI.back;
depthStencilStateCI.back.compareOp = VK_COMPARE_OP_ALWAYS;
VkPipelineViewportStateCreateInfo viewportStateCI{};
viewportStateCI.sType = VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO;
viewportStateCI.viewportCount = 1;
viewportStateCI.scissorCount = 1;
VkPipelineMultisampleStateCreateInfo multisampleStateCI{};
multisampleStateCI.sType = VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO;
multisampleStateCI.rasterizationSamples = VK_SAMPLE_COUNT_1_BIT;
std::vector<VkDynamicState> dynamicStateEnables = { VK_DYNAMIC_STATE_VIEWPORT, VK_DYNAMIC_STATE_SCISSOR };
VkPipelineDynamicStateCreateInfo dynamicStateCI{};
dynamicStateCI.sType = VK_STRUCTURE_TYPE_PIPELINE_DYNAMIC_STATE_CREATE_INFO;
dynamicStateCI.pDynamicStates = dynamicStateEnables.data();
dynamicStateCI.dynamicStateCount = static_cast<uint32_t>(dynamicStateEnables.size());
VkPipelineVertexInputStateCreateInfo emptyInputStateCI{};
emptyInputStateCI.sType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO;
std::array<VkPipelineShaderStageCreateInfo, 2> shaderStages;
VkGraphicsPipelineCreateInfo pipelineCI{};
pipelineCI.sType = VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO;
pipelineCI.layout = pipelinelayout;
pipelineCI.renderPass = renderpass;
pipelineCI.pInputAssemblyState = &inputAssemblyStateCI;