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DrawDifferedShaderPipeline.cpp
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DrawDifferedShaderPipeline.cpp
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#include "DrawDifferedShaderPipeline.h"
#include "DrawDifferedBuffer.h"
Shader::DrawDifferedShaderPipeline::DrawDifferedShaderPipeline(
const Asset::AssetLoader * asset,
const VulkanEngineApplication::VulkanData * vulkanData):
ShaderPipeline(vulkanData), uniformBufferData(nullptr), pushConstantBufferData(nullptr) {
pushConstantBufferData = std::shared_ptr<PushConstantBuffer>(new PushConstantBuffer());
descriptorSets.resize(2);
descriptorSetLayouts.resize(2);
}
Shader::DrawDifferedShaderPipeline::~DrawDifferedShaderPipeline() {
vkUnmapMemory(vulkanData->device, uniformBufferMemory);
vkDestroyBuffer(vulkanData->device, uniformBuffer, nullptr);
vkFreeMemory(vulkanData->device, uniformBufferMemory, nullptr);
}
void Shader::DrawDifferedShaderPipeline::initializeUniformBufferDescriptor(void) {
VkDescriptorBufferInfo bufferInfo = {};
bufferInfo.buffer = uniformBuffer;
bufferInfo.offset = 0;
bufferInfo.range = sizeof(Shader::DrawDifferedShaderPipeline::UniformBuffer);
std::array<VkWriteDescriptorSet, 1> writeDescriptors = {};
writeDescriptors[0].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
writeDescriptors[0].dstSet = getDescriptorSets()[0];
writeDescriptors[0].dstBinding = 0;
writeDescriptors[0].dstArrayElement = 0;
writeDescriptors[0].descriptorType = VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER;
writeDescriptors[0].descriptorCount = 1;
writeDescriptors[0].pBufferInfo = &bufferInfo;
writeDescriptors[0].pImageInfo = nullptr;
writeDescriptors[0].pTexelBufferView = nullptr;
vkUpdateDescriptorSets(vulkanData->device, static_cast<uint32_t>(writeDescriptors.size()), writeDescriptors.data(), 0, nullptr);
}
void Shader::DrawDifferedShaderPipeline::initializeUniformBuffer(void) {
VkDeviceSize uniformBufferSize = sizeof(Shader::DrawDifferedShaderPipeline::UniformBuffer);
VulkanInitialize::createBuffer(vulkanData, uniformBufferSize,
VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
VK_MEMORY_PROPERTY_HOST_COHERENT_BIT | VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT,
uniformBuffer, uniformBufferMemory);
vkMapMemory(vulkanData->device, uniformBufferMemory, 0, uniformBufferSize, 0, reinterpret_cast<void **>(&uniformBufferData));
}
void Shader::DrawDifferedShaderPipeline::initializePipelineLayout(void) {
std::array<VkPushConstantRange, 1> pushRange = {};
pushRange[0].stageFlags = VK_SHADER_STAGE_FRAGMENT_BIT;
pushRange[0].offset = 0;
pushRange[0].size = sizeof(Shader::DrawDifferedShaderPipeline::PushConstantBuffer);
VkPipelineLayoutCreateInfo mPipelineLayoutCreateInfo = {};
mPipelineLayoutCreateInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO;
mPipelineLayoutCreateInfo.setLayoutCount = static_cast<decltype(mPipelineLayoutCreateInfo.setLayoutCount)>(descriptorSetLayouts.size());
mPipelineLayoutCreateInfo.pSetLayouts = descriptorSetLayouts.data();
mPipelineLayoutCreateInfo.pushConstantRangeCount = static_cast<uint32_t>(pushRange.size());
mPipelineLayoutCreateInfo.pPushConstantRanges = pushRange.data();
VkResult res = vkCreatePipelineLayout(vulkanData->device, &mPipelineLayoutCreateInfo, nullptr, &pipelineLayout);
if (res != VK_SUCCESS) {
throw std::runtime_error("[DBG] Failed to create pipeline layout!");
}
}
void Shader::DrawDifferedShaderPipeline::initializeDescriptorPool(uint32_t texCount) {
std::vector<VkDescriptorPoolSize> poolSizes(1 + !!texCount);
poolSizes[0].descriptorCount = 1;
poolSizes[0].type = VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER;
if (texCount) {
poolSizes[1].descriptorCount = texCount;
poolSizes[1].type = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
}
VkDescriptorPoolCreateInfo poolInfo = {};
poolInfo.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO;
poolInfo.pNext = nullptr;
poolInfo.poolSizeCount = static_cast<uint32_t>(poolSizes.size());
poolInfo.pPoolSizes = poolSizes.data();
poolInfo.maxSets = static_cast<uint32_t>(descriptorSets.size());
if (vkCreateDescriptorPool(vulkanData->device, &poolInfo, nullptr, &descriptorPool) != VK_SUCCESS) {
throw std::runtime_error("[DBG] Failed creating descriptor pool");
}
}
void Shader::DrawDifferedShaderPipeline::initializeDescriptorSet(void) {
VkDescriptorSetAllocateInfo allocInfo = {};
allocInfo.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO;
allocInfo.pSetLayouts = descriptorSetLayouts.data();
allocInfo.descriptorPool = descriptorPool;
allocInfo.descriptorSetCount = static_cast<decltype(allocInfo.descriptorSetCount)>(descriptorSetLayouts.size());
if (vkAllocateDescriptorSets(vulkanData->device, &allocInfo, descriptorSets.data()) != VK_SUCCESS) {
throw std::runtime_error("Error allocate descriptor set");
}
}
void Shader::DrawDifferedShaderPipeline::initializeDescriptorSetLayout(VkShaderStageFlags shaderStage) {
VkDescriptorSetLayoutBinding layoutDescriptor = {};
layoutDescriptor.binding = 0;
layoutDescriptor.descriptorType = VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER;
layoutDescriptor.descriptorCount = 1;
layoutDescriptor.stageFlags = shaderStage;// VK_SHADER_STAGE_VERTEX_BIT | VK_SHADER_STAGE_TESSELLATION_EVALUATION_BIT | VK_SHADER_STAGE_GEOMETRY_BIT;
layoutDescriptor.pImmutableSamplers = nullptr;
std::array<VkDescriptorSetLayoutBinding, 1> bindings = { layoutDescriptor };
VkDescriptorSetLayoutCreateInfo descriptorSetInfo = {};
descriptorSetInfo.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO;
descriptorSetInfo.bindingCount = static_cast<uint32_t>(bindings.size());
descriptorSetInfo.pBindings = bindings.data();
if (vkCreateDescriptorSetLayout(vulkanData->device, &descriptorSetInfo, nullptr, &descriptorSetLayouts.data()[0]) != VK_SUCCESS) {
throw std::runtime_error("[DBG] Failed create descriptor set");
}
}
Shader::DrawDifferedShaderPipeline::UniformBuffer *Shader::DrawDifferedShaderPipeline::getUniformBuffer(void) {
return uniformBufferData;
}
std::shared_ptr<Shader::DrawDifferedShaderPipeline::PushConstantBuffer> &Shader::DrawDifferedShaderPipeline::getPushConstantBuffer(void) {
return pushConstantBufferData;
}
void Shader::DrawDifferedShaderPipeline::updateConstantBufferData(VkCommandBuffer commandBuffer) {
vkCmdPushConstants(commandBuffer, getPipelineLayout(), VK_SHADER_STAGE_FRAGMENT_BIT, 0,
sizeof(Shader::DrawDifferedShaderPipeline::PushConstantBuffer), pushConstantBufferData.get());
}