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#include "xe_pipeline.hpp"
#include <cstdint>
#include <fstream>
#include <stdexcept>
#include <vector>
#include <iostream>
#include <vulkan/vulkan_core.h>
#include <assert.h>
namespace xe {
Pipeline::Pipeline(
Device &device,
const std::string& vertFilepath,
const std::string& fragFilepath,
const PipelineConfigInfo& configInfo,
std::vector<VkVertexInputAttributeDescription> &attributeDescptions,
uint32_t vertexSize
) : xeDevice{device} {
createGraphicsPipeline(vertFilepath, fragFilepath, configInfo, attributeDescptions, vertexSize);
}
Pipeline::~Pipeline() {
vkDestroyShaderModule(xeDevice.device(), vertShaderModule, nullptr);
vkDestroyShaderModule(xeDevice.device(), fragShaderModule, nullptr);
vkDestroyPipeline(xeDevice.device(), graphicsPipeline, nullptr);
}
std::vector<char> Pipeline::readFile(const std::string& filepath) {
std::ifstream file{filepath, std::ios::ate | std::ios::binary};
if (!file.is_open()) {
throw std::runtime_error("faile to open file " + filepath);
}
size_t fileSize = static_cast<size_t>(file.tellg());
std::vector<char> buffer(fileSize);
file.seekg(0);
file.read(buffer.data(), fileSize);
file.close();
return buffer;
};
void Pipeline::createGraphicsPipeline(
const std::string& vertFilePath,
const std::string& fragFilepath,
const PipelineConfigInfo& configInfo,
std::vector<VkVertexInputAttributeDescription> &attributeDescptions,
uint32_t vertexSize
) {
assert(
configInfo.pipelineLayout != VK_NULL_HANDLE &&
"Cannot create graphics pipeline:: no pipelineLayout provided in configInfo");
assert(
configInfo.renderPass != VK_NULL_HANDLE &&
"Cannot create graphics pipeline:: no renderPass provided in configInfo");
auto vertCode = readFile(vertFilePath);
auto fragCode = readFile(fragFilepath);
createShaderModule(vertCode, &vertShaderModule);
createShaderModule(fragCode, &fragShaderModule);
VkPipelineShaderStageCreateInfo shaderStages[2];
shaderStages[0].sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO;
shaderStages[0].stage = VK_SHADER_STAGE_VERTEX_BIT;
shaderStages[0]. module = vertShaderModule;
shaderStages[0].pName = "main";
shaderStages[0].flags = 0;
shaderStages[0].pNext = nullptr;
shaderStages[0].pSpecializationInfo = nullptr;
shaderStages[1].sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO;
shaderStages[1].stage = VK_SHADER_STAGE_FRAGMENT_BIT;
shaderStages[1]. module = fragShaderModule;
shaderStages[1].pName = "main";
shaderStages[1].flags = 0;
shaderStages[1].pNext = nullptr;
shaderStages[1].pSpecializationInfo = nullptr;
VkVertexInputBindingDescription bindingDescription;
bindingDescription.binding = 0;
bindingDescription.stride = vertexSize;
bindingDescription.inputRate = VK_VERTEX_INPUT_RATE_VERTEX;
std::vector<VkVertexInputBindingDescription> bindingDescriptions{bindingDescription};
VkPipelineVertexInputStateCreateInfo vertexInputInfo{};
vertexInputInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO;
vertexInputInfo.vertexAttributeDescriptionCount = static_cast<uint32_t>(attributeDescptions.size());
vertexInputInfo.vertexBindingDescriptionCount = static_cast<uint32_t>(bindingDescriptions.size());
vertexInputInfo.pVertexAttributeDescriptions = attributeDescptions.data();
vertexInputInfo.pVertexBindingDescriptions = bindingDescriptions.data();
VkGraphicsPipelineCreateInfo pipelineInfo{};
pipelineInfo.sType = VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO;
pipelineInfo.stageCount = 2;
pipelineInfo.pStages = shaderStages;
pipelineInfo.pVertexInputState = &vertexInputInfo;
pipelineInfo.pInputAssemblyState = &configInfo.inputAssemblyInfo;
pipelineInfo.pViewportState = &configInfo.viewportInfo;
pipelineInfo.pRasterizationState = &configInfo.rasterizationInfo;
pipelineInfo.pMultisampleState = &configInfo.multisampleInfo;
pipelineInfo.pColorBlendState = &configInfo.colorBlendInfo;
pipelineInfo.pDepthStencilState = &configInfo.depthStencilInfo;
pipelineInfo.pDynamicState = &configInfo.dynamicStateInfo;
pipelineInfo.layout = configInfo.pipelineLayout;
pipelineInfo.renderPass = configInfo.renderPass;
pipelineInfo.subpass = configInfo.subpass;
pipelineInfo.basePipelineIndex = -1;
pipelineInfo.basePipelineHandle = VK_NULL_HANDLE;
if(vkCreateGraphicsPipelines(xeDevice.device(), VK_NULL_HANDLE, 1, &pipelineInfo, nullptr, &graphicsPipeline) != VK_SUCCESS){
throw std::runtime_error("failed to create graphics pipeline");
}
}
void Pipeline::createShaderModule(const std::vector<char>& code, VkShaderModule* shaderModule) {
VkShaderModuleCreateInfo createInfo{};
createInfo.sType = VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO;
createInfo.codeSize = code.size();
createInfo.pCode = reinterpret_cast<const uint32_t*>(code.data());
if(vkCreateShaderModule(xeDevice.device(), &createInfo, nullptr, shaderModule) != VK_SUCCESS) {
throw std::runtime_error("failed to create shader module");
}
}
void Pipeline::bind(VkCommandBuffer commandBuffer) {
vkCmdBindPipeline(commandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, graphicsPipeline);
}
void Pipeline::defaultPipelineConfigInfo(PipelineConfigInfo& configInfo, Device& device) {
configInfo.inputAssemblyInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO;
configInfo.inputAssemblyInfo.topology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST;
configInfo.inputAssemblyInfo.primitiveRestartEnable = VK_FALSE;
configInfo.viewportInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO;
configInfo.viewportInfo.viewportCount = 1;
configInfo.viewportInfo.pViewports = nullptr;
configInfo.viewportInfo.scissorCount = 1;
configInfo.viewportInfo.pScissors = nullptr;
configInfo.rasterizationInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO;
configInfo.rasterizationInfo.depthClampEnable = VK_FALSE;
configInfo.rasterizationInfo.rasterizerDiscardEnable = VK_FALSE;
configInfo.rasterizationInfo.polygonMode = VK_POLYGON_MODE_FILL;
configInfo.rasterizationInfo.lineWidth = 1.0f;
configInfo.rasterizationInfo.cullMode = VK_CULL_MODE_NONE;
configInfo.rasterizationInfo.frontFace = VK_FRONT_FACE_CLOCKWISE;
configInfo.rasterizationInfo.depthBiasEnable = VK_FALSE;
configInfo.rasterizationInfo.depthBiasConstantFactor = 0.0f;
configInfo.rasterizationInfo.depthBiasClamp = 0.0f;
configInfo.rasterizationInfo.depthBiasSlopeFactor = 0.0f;
configInfo.multisampleInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO;
configInfo.multisampleInfo.sampleShadingEnable = VK_FALSE;
configInfo.multisampleInfo.rasterizationSamples = device.getSamples();
configInfo.multisampleInfo.minSampleShading = 1.0f;
configInfo.multisampleInfo.pSampleMask = nullptr;
configInfo.multisampleInfo.alphaToCoverageEnable = VK_FALSE;
configInfo.multisampleInfo.alphaToOneEnable = VK_FALSE;
configInfo.colorBlendAttachment.colorWriteMask =
VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT |
VK_COLOR_COMPONENT_A_BIT;
configInfo.colorBlendAttachment.blendEnable = VK_FALSE;
configInfo.colorBlendAttachment.srcColorBlendFactor = VK_BLEND_FACTOR_ONE;
configInfo.colorBlendAttachment.dstColorBlendFactor = VK_BLEND_FACTOR_ZERO;
configInfo.colorBlendAttachment.colorBlendOp = VK_BLEND_OP_ADD;
configInfo.colorBlendAttachment.srcAlphaBlendFactor = VK_BLEND_FACTOR_ONE;
configInfo.colorBlendAttachment.dstAlphaBlendFactor = VK_BLEND_FACTOR_ZERO;
configInfo.colorBlendAttachment.alphaBlendOp = VK_BLEND_OP_ADD;
configInfo.colorBlendInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO;
configInfo.colorBlendInfo.logicOpEnable = VK_FALSE;
configInfo.colorBlendInfo.logicOp = VK_LOGIC_OP_COPY;
configInfo.colorBlendInfo.attachmentCount = 1;
configInfo.colorBlendInfo.pAttachments = &configInfo.colorBlendAttachment;
configInfo.colorBlendInfo.blendConstants[0] = 0.0f;
configInfo.colorBlendInfo.blendConstants[1] = 0.0f;
configInfo.colorBlendInfo.blendConstants[2] = 0.0f;
configInfo.colorBlendInfo.blendConstants[3] = 0.0f;
configInfo.depthStencilInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_DEPTH_STENCIL_STATE_CREATE_INFO;
configInfo.depthStencilInfo.depthTestEnable = VK_TRUE;
configInfo.depthStencilInfo.depthWriteEnable = VK_TRUE;
configInfo.depthStencilInfo.depthCompareOp = VK_COMPARE_OP_LESS;
configInfo.depthStencilInfo.depthBoundsTestEnable = VK_FALSE;
configInfo.depthStencilInfo.minDepthBounds = 0.0f;
configInfo.depthStencilInfo.maxDepthBounds = 1.0f;
configInfo.depthStencilInfo.stencilTestEnable = VK_FALSE;
configInfo.depthStencilInfo.front = {};
configInfo.depthStencilInfo.back = {};
configInfo.dynamicStateEnables = {VK_DYNAMIC_STATE_VIEWPORT, VK_DYNAMIC_STATE_SCISSOR};
configInfo.dynamicStateInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_DYNAMIC_STATE_CREATE_INFO;
configInfo.dynamicStateInfo.pDynamicStates = configInfo.dynamicStateEnables.data();
configInfo.dynamicStateInfo.dynamicStateCount =
static_cast<uint32_t>(configInfo.dynamicStateEnables.size());
configInfo.dynamicStateInfo.flags = 0;
}
}
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