1 | #include "graphics-pipeline_vulkan.hpp"
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2 |
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3 | #include <fstream>
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4 | #include <stdexcept>
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5 |
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6 | using namespace std;
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7 |
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8 | GraphicsPipeline_Vulkan::GraphicsPipeline_Vulkan(VkPhysicalDevice physicalDevice, VkDevice device,
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9 | VkRenderPass renderPass, Viewport viewport, int vertexSize) {
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10 | this->physicalDevice = physicalDevice;
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11 | this->device = device;
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12 | this->renderPass = renderPass;
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13 | this->viewport = viewport;
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14 |
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15 | // Since there is only one array of vertex data, we use binding = 0
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16 | // I'll probably do that for the foreseeable future
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17 | // I can calculate the stride myself given info about all the varying attributes
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18 | this->bindingDescription.binding = 0;
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19 | this->bindingDescription.stride = vertexSize;
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20 | this->bindingDescription.inputRate = VK_VERTEX_INPUT_RATE_VERTEX;
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21 | }
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22 |
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23 | GraphicsPipeline_Vulkan::~GraphicsPipeline_Vulkan() {
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24 | }
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25 |
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26 | void GraphicsPipeline_Vulkan::updateRenderPass(VkRenderPass renderPass) {
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27 | this->renderPass = renderPass;
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28 | }
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29 |
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30 | void GraphicsPipeline_Vulkan::createVertexBuffer(const void* bufferData, int vertexSize,
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31 | VkCommandPool commandPool, VkQueue graphicsQueue) {
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32 | VkDeviceSize bufferSize = numVertices * vertexSize;
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33 | VkDeviceSize bufferCapacity = vertexCapacity * vertexSize;
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34 |
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35 | VkBuffer stagingBuffer;
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36 | VkDeviceMemory stagingBufferMemory;
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37 | VulkanUtils::createBuffer(device, physicalDevice, bufferSize, VK_BUFFER_USAGE_TRANSFER_SRC_BIT,
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38 | VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
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39 | stagingBuffer, stagingBufferMemory);
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40 |
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41 | void* data;
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42 | vkMapMemory(device, stagingBufferMemory, 0, bufferSize, 0, &data);
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43 | memcpy(data, bufferData, (size_t) bufferSize);
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44 | vkUnmapMemory(device, stagingBufferMemory);
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45 |
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46 | VulkanUtils::createBuffer(device, physicalDevice, bufferCapacity,
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47 | VK_BUFFER_USAGE_TRANSFER_DST_BIT | VK_BUFFER_USAGE_VERTEX_BUFFER_BIT,
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48 | VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, vertexBuffer, vertexBufferMemory);
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49 |
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50 | VulkanUtils::copyBuffer(device, commandPool, stagingBuffer, vertexBuffer, 0, 0, bufferSize, graphicsQueue);
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51 |
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52 | vkDestroyBuffer(device, stagingBuffer, nullptr);
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53 | vkFreeMemory(device, stagingBufferMemory, nullptr);
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54 | }
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55 |
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56 | void GraphicsPipeline_Vulkan::createIndexBuffer(const void* bufferData, int indexSize,
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57 | VkCommandPool commandPool, VkQueue graphicsQueue) {
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58 | VkDeviceSize bufferSize = numIndices * indexSize;
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59 | VkDeviceSize bufferCapacity = indexCapacity * indexSize;
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60 |
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61 | VkBuffer stagingBuffer;
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62 | VkDeviceMemory stagingBufferMemory;
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63 | VulkanUtils::createBuffer(device, physicalDevice, bufferSize, VK_BUFFER_USAGE_TRANSFER_SRC_BIT,
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64 | VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
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65 | stagingBuffer, stagingBufferMemory);
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66 |
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67 | void* data;
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68 | vkMapMemory(device, stagingBufferMemory, 0, bufferSize, 0, &data);
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69 | memcpy(data, bufferData, (size_t) bufferSize);
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70 | vkUnmapMemory(device, stagingBufferMemory);
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71 |
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72 | VulkanUtils::createBuffer(device, physicalDevice, bufferCapacity,
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73 | VK_BUFFER_USAGE_TRANSFER_DST_BIT | VK_BUFFER_USAGE_INDEX_BUFFER_BIT,
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74 | VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, indexBuffer, indexBufferMemory);
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75 |
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76 | VulkanUtils::copyBuffer(device, commandPool, stagingBuffer, indexBuffer, 0, 0, bufferSize, graphicsQueue);
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77 |
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78 | vkDestroyBuffer(device, stagingBuffer, nullptr);
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79 | vkFreeMemory(device, stagingBufferMemory, nullptr);
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80 | }
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81 |
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82 | void GraphicsPipeline_Vulkan::addAttribute(VkFormat format, size_t offset) {
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83 | VkVertexInputAttributeDescription attributeDesc = {};
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84 |
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85 | attributeDesc.binding = 0;
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86 | attributeDesc.location = this->attributeDescriptions.size();
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87 | attributeDesc.format = format;
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88 | attributeDesc.offset = offset;
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89 |
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90 | this->attributeDescriptions.push_back(attributeDesc);
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91 | }
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92 |
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93 | void GraphicsPipeline_Vulkan::addDescriptorInfo(VkDescriptorType type, VkShaderStageFlags stageFlags, vector<VkDescriptorBufferInfo>* bufferData) {
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94 | this->descriptorInfoList.push_back({ type, stageFlags, bufferData, nullptr });
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95 | }
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96 |
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97 | void GraphicsPipeline_Vulkan::addDescriptorInfo(VkDescriptorType type, VkShaderStageFlags stageFlags, VkDescriptorImageInfo* imageData) {
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98 | this->descriptorInfoList.push_back({ type, stageFlags, nullptr, imageData });
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99 | }
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100 |
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101 | void GraphicsPipeline_Vulkan::createPipeline(string vertShaderFile, string fragShaderFile) {
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102 | vector<char> vertShaderCode = readFile(vertShaderFile);
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103 | vector<char> fragShaderCode = readFile(fragShaderFile);
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104 |
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105 | VkShaderModule vertShaderModule = createShaderModule(vertShaderCode);
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106 | VkShaderModule fragShaderModule = createShaderModule(fragShaderCode);
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107 |
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108 | VkPipelineShaderStageCreateInfo vertShaderStageInfo = {};
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109 | vertShaderStageInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO;
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110 | vertShaderStageInfo.stage = VK_SHADER_STAGE_VERTEX_BIT;
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111 | vertShaderStageInfo.module = vertShaderModule;
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112 | vertShaderStageInfo.pName = "main";
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113 |
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114 | VkPipelineShaderStageCreateInfo fragShaderStageInfo = {};
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115 | fragShaderStageInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO;
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116 | fragShaderStageInfo.stage = VK_SHADER_STAGE_FRAGMENT_BIT;
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117 | fragShaderStageInfo.module = fragShaderModule;
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118 | fragShaderStageInfo.pName = "main";
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119 |
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120 | VkPipelineShaderStageCreateInfo shaderStages[] = { vertShaderStageInfo, fragShaderStageInfo };
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121 |
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122 | VkPipelineVertexInputStateCreateInfo vertexInputInfo = {};
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123 | vertexInputInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO;
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124 |
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125 | vertexInputInfo.vertexBindingDescriptionCount = 1;
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126 | vertexInputInfo.vertexAttributeDescriptionCount = static_cast<uint32_t>(this->attributeDescriptions.size());
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127 | vertexInputInfo.pVertexBindingDescriptions = &this->bindingDescription;
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128 | vertexInputInfo.pVertexAttributeDescriptions = this->attributeDescriptions.data();
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129 |
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130 | VkPipelineInputAssemblyStateCreateInfo inputAssembly = {};
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131 | inputAssembly.sType = VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO;
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132 | inputAssembly.topology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST;
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133 | inputAssembly.primitiveRestartEnable = VK_FALSE;
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134 |
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135 | VkViewport viewport = {};
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136 | viewport.x = (float)this->viewport.x;
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137 | viewport.y = (float)this->viewport.y;
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138 | viewport.width = (float)this->viewport.width;
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139 | viewport.height = (float)this->viewport.height;
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140 | viewport.minDepth = 0.0f;
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141 | viewport.maxDepth = 1.0f;
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142 |
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143 | VkRect2D scissor = {};
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144 | scissor.offset = { 0, 0 };
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145 | scissor.extent = { (uint32_t)this->viewport.width, (uint32_t)this->viewport.height };
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146 |
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147 | VkPipelineViewportStateCreateInfo viewportState = {};
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148 | viewportState.sType = VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO;
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149 | viewportState.viewportCount = 1;
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150 | viewportState.pViewports = &viewport;
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151 | viewportState.scissorCount = 1;
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152 | viewportState.pScissors = &scissor;
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153 |
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154 | VkPipelineRasterizationStateCreateInfo rasterizer = {};
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155 | rasterizer.sType = VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO;
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156 | rasterizer.depthClampEnable = VK_FALSE;
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157 | rasterizer.rasterizerDiscardEnable = VK_FALSE;
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158 | rasterizer.polygonMode = VK_POLYGON_MODE_FILL;
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159 | rasterizer.lineWidth = 1.0f;
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160 | rasterizer.cullMode = VK_CULL_MODE_BACK_BIT;
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161 | rasterizer.frontFace = VK_FRONT_FACE_COUNTER_CLOCKWISE;
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162 | rasterizer.depthBiasEnable = VK_FALSE;
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163 |
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164 | VkPipelineMultisampleStateCreateInfo multisampling = {};
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165 | multisampling.sType = VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO;
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166 | multisampling.sampleShadingEnable = VK_FALSE;
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167 | multisampling.rasterizationSamples = VK_SAMPLE_COUNT_1_BIT;
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168 |
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169 | VkPipelineColorBlendAttachmentState colorBlendAttachment = {};
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170 | colorBlendAttachment.colorWriteMask = VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT;
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171 | colorBlendAttachment.blendEnable = VK_TRUE;
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172 | colorBlendAttachment.colorBlendOp = VK_BLEND_OP_ADD;
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173 | colorBlendAttachment.srcColorBlendFactor = VK_BLEND_FACTOR_SRC_ALPHA;
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174 | colorBlendAttachment.dstColorBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA;
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175 | colorBlendAttachment.alphaBlendOp = VK_BLEND_OP_ADD;
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176 | colorBlendAttachment.srcAlphaBlendFactor = VK_BLEND_FACTOR_SRC_ALPHA;
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177 | colorBlendAttachment.dstAlphaBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA;
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178 |
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179 | VkPipelineColorBlendStateCreateInfo colorBlending = {};
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180 | colorBlending.sType = VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO;
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181 | colorBlending.logicOpEnable = VK_FALSE;
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182 | colorBlending.logicOp = VK_LOGIC_OP_COPY;
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183 | colorBlending.attachmentCount = 1;
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184 | colorBlending.pAttachments = &colorBlendAttachment;
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185 | colorBlending.blendConstants[0] = 0.0f;
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186 | colorBlending.blendConstants[1] = 0.0f;
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187 | colorBlending.blendConstants[2] = 0.0f;
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188 | colorBlending.blendConstants[3] = 0.0f;
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189 |
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190 | VkPipelineDepthStencilStateCreateInfo depthStencil = {};
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191 | depthStencil.sType = VK_STRUCTURE_TYPE_PIPELINE_DEPTH_STENCIL_STATE_CREATE_INFO;
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192 | depthStencil.depthTestEnable = VK_TRUE;
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193 | depthStencil.depthWriteEnable = VK_TRUE;
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194 | depthStencil.depthCompareOp = VK_COMPARE_OP_LESS;
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195 | depthStencil.depthBoundsTestEnable = VK_FALSE;
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196 | depthStencil.minDepthBounds = 0.0f;
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197 | depthStencil.maxDepthBounds = 1.0f;
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198 | depthStencil.stencilTestEnable = VK_FALSE;
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199 | depthStencil.front = {};
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200 | depthStencil.back = {};
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201 |
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202 | VkPipelineLayoutCreateInfo pipelineLayoutInfo = {};
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203 | pipelineLayoutInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO;
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204 | pipelineLayoutInfo.setLayoutCount = 1;
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205 | pipelineLayoutInfo.pSetLayouts = &this->descriptorSetLayout;
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206 | pipelineLayoutInfo.pushConstantRangeCount = 0;
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207 |
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208 | if (vkCreatePipelineLayout(this->device, &pipelineLayoutInfo, nullptr, &this->pipelineLayout) != VK_SUCCESS) {
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209 | throw runtime_error("failed to create pipeline layout!");
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210 | }
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211 |
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212 | VkGraphicsPipelineCreateInfo pipelineInfo = {};
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213 | pipelineInfo.sType = VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO;
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214 | pipelineInfo.stageCount = 2;
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215 | pipelineInfo.pStages = shaderStages;
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216 | pipelineInfo.pVertexInputState = &vertexInputInfo;
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217 | pipelineInfo.pInputAssemblyState = &inputAssembly;
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218 | pipelineInfo.pViewportState = &viewportState;
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219 | pipelineInfo.pRasterizationState = &rasterizer;
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220 | pipelineInfo.pMultisampleState = &multisampling;
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221 | pipelineInfo.pDepthStencilState = &depthStencil;
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222 | pipelineInfo.pColorBlendState = &colorBlending;
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223 | pipelineInfo.pDynamicState = nullptr;
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224 | pipelineInfo.layout = this->pipelineLayout;
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225 | pipelineInfo.renderPass = this->renderPass;
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226 | pipelineInfo.subpass = 0;
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227 | pipelineInfo.basePipelineHandle = VK_NULL_HANDLE;
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228 | pipelineInfo.basePipelineIndex = -1;
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229 |
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230 | if (vkCreateGraphicsPipelines(this->device, VK_NULL_HANDLE, 1, &pipelineInfo, nullptr, &this->pipeline) != VK_SUCCESS) {
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231 | throw runtime_error("failed to create graphics pipeline!");
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232 | }
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233 |
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234 | vkDestroyShaderModule(this->device, vertShaderModule, nullptr);
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235 | vkDestroyShaderModule(this->device, fragShaderModule, nullptr);
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236 | }
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237 |
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238 | void GraphicsPipeline_Vulkan::createDescriptorSetLayout() {
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239 | vector<VkDescriptorSetLayoutBinding> bindings(this->descriptorInfoList.size());
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240 |
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241 | for (size_t i = 0; i < bindings.size(); i++) {
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242 | bindings[i].binding = i;
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243 | bindings[i].descriptorCount = 1;
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244 | bindings[i].descriptorType = this->descriptorInfoList[i].type;
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245 | bindings[i].stageFlags = this->descriptorInfoList[i].stageFlags;
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246 | bindings[i].pImmutableSamplers = nullptr;
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247 | }
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248 |
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249 | VkDescriptorSetLayoutCreateInfo layoutInfo = {};
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250 | layoutInfo.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO;
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251 | layoutInfo.bindingCount = static_cast<uint32_t>(bindings.size());
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252 | layoutInfo.pBindings = bindings.data();
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253 |
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254 | if (vkCreateDescriptorSetLayout(this->device, &layoutInfo, nullptr, &this->descriptorSetLayout) != VK_SUCCESS) {
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255 | throw runtime_error("failed to create descriptor set layout!");
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256 | }
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257 | }
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258 |
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259 | void GraphicsPipeline_Vulkan::createDescriptorPool(vector<VkImage>& swapChainImages) {
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260 | vector<VkDescriptorPoolSize> poolSizes(this->descriptorInfoList.size());
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261 |
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262 | for (size_t i = 0; i < poolSizes.size(); i++) {
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263 | poolSizes[i].type = this->descriptorInfoList[i].type;
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264 | poolSizes[i].descriptorCount = static_cast<uint32_t>(swapChainImages.size());
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265 | }
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266 |
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267 | VkDescriptorPoolCreateInfo poolInfo = {};
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268 | poolInfo.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO;
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269 | poolInfo.poolSizeCount = static_cast<uint32_t>(poolSizes.size());
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270 | poolInfo.pPoolSizes = poolSizes.data();
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271 | poolInfo.maxSets = static_cast<uint32_t>(swapChainImages.size());
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272 |
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273 | if (vkCreateDescriptorPool(this->device, &poolInfo, nullptr, &this->descriptorPool) != VK_SUCCESS) {
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274 | throw runtime_error("failed to create descriptor pool!");
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275 | }
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276 | }
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277 |
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278 | void GraphicsPipeline_Vulkan::createDescriptorSets(vector<VkImage>& swapChainImages) {
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279 | vector<VkDescriptorSetLayout> layouts(swapChainImages.size(), this->descriptorSetLayout);
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280 |
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281 | VkDescriptorSetAllocateInfo allocInfo = {};
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282 | allocInfo.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO;
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283 | allocInfo.descriptorPool = this->descriptorPool;
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284 | allocInfo.descriptorSetCount = static_cast<uint32_t>(swapChainImages.size());
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285 | allocInfo.pSetLayouts = layouts.data();
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286 |
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287 | this->descriptorSets.resize(swapChainImages.size());
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288 | if (vkAllocateDescriptorSets(device, &allocInfo, this->descriptorSets.data()) != VK_SUCCESS) {
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289 | throw runtime_error("failed to allocate descriptor sets!");
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290 | }
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291 |
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292 | for (size_t i = 0; i < swapChainImages.size(); i++) {
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293 | vector<VkWriteDescriptorSet> descriptorWrites(this->descriptorInfoList.size());
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294 |
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295 | for (size_t j = 0; j < descriptorWrites.size(); j++) {
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296 | descriptorWrites[j].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
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297 | descriptorWrites[j].dstSet = this->descriptorSets[i];
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298 | descriptorWrites[j].dstBinding = j;
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299 | descriptorWrites[j].dstArrayElement = 0;
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300 | descriptorWrites[j].descriptorType = this->descriptorInfoList[j].type;
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301 | descriptorWrites[j].descriptorCount = 1;
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302 | descriptorWrites[j].pBufferInfo = nullptr;
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303 | descriptorWrites[j].pImageInfo = nullptr;
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304 | descriptorWrites[j].pTexelBufferView = nullptr;
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305 |
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306 | switch (descriptorWrites[j].descriptorType) {
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307 | case VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER:
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308 | descriptorWrites[j].pBufferInfo = &(*this->descriptorInfoList[j].bufferDataList)[i];
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309 | break;
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310 | case VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER:
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311 | descriptorWrites[j].pImageInfo = this->descriptorInfoList[j].imageData;
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312 | break;
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313 | default:
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314 | throw runtime_error("Unknown descriptor type: " + to_string(descriptorWrites[j].descriptorType));
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315 | }
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316 | }
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317 |
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318 | vkUpdateDescriptorSets(this->device, static_cast<uint32_t>(descriptorWrites.size()), descriptorWrites.data(), 0, nullptr);
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319 | }
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320 | }
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321 |
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322 | void GraphicsPipeline_Vulkan::createRenderCommands(VkCommandBuffer& commandBuffer, uint32_t currentImage) {
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323 | vkCmdBindPipeline(commandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline);
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324 | vkCmdBindDescriptorSets(commandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1,
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325 | &descriptorSets[currentImage], 0, nullptr);
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326 |
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327 | VkBuffer vertexBuffers[] = { vertexBuffer };
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328 | VkDeviceSize offsets[] = { 0 };
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329 | vkCmdBindVertexBuffers(commandBuffer, 0, 1, vertexBuffers, offsets);
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330 |
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331 | vkCmdBindIndexBuffer(commandBuffer, indexBuffer, 0, VK_INDEX_TYPE_UINT16);
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332 |
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333 | vkCmdDrawIndexed(commandBuffer, static_cast<uint32_t>(numIndices), 1, 0, 0, 0);
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334 | }
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335 |
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336 | VkShaderModule GraphicsPipeline_Vulkan::createShaderModule(const vector<char>& code) {
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337 | VkShaderModuleCreateInfo createInfo = {};
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338 | createInfo.sType = VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO;
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339 | createInfo.codeSize = code.size();
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340 | createInfo.pCode = reinterpret_cast<const uint32_t*>(code.data());
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341 |
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342 | VkShaderModule shaderModule;
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343 | if (vkCreateShaderModule(this->device, &createInfo, nullptr, &shaderModule) != VK_SUCCESS) {
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344 | throw runtime_error("failed to create shader module!");
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345 | }
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346 |
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347 | return shaderModule;
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348 | }
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349 |
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350 | vector<char> GraphicsPipeline_Vulkan::readFile(const string& filename) {
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351 | ifstream file(filename, ios::ate | ios::binary);
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352 |
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353 | if (!file.is_open()) {
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354 | throw runtime_error("failed to open file!");
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355 | }
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356 |
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357 | size_t fileSize = (size_t)file.tellg();
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358 | vector<char> buffer(fileSize);
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359 |
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360 | file.seekg(0);
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361 | file.read(buffer.data(), fileSize);
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362 |
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363 | file.close();
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364 |
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365 | return buffer;
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366 | }
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367 |
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368 | void GraphicsPipeline_Vulkan::cleanup() {
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369 | vkDestroyPipeline(device, pipeline, nullptr);
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370 | vkDestroyDescriptorPool(device, descriptorPool, nullptr);
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371 | vkDestroyPipelineLayout(device, pipelineLayout, nullptr);
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372 | }
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373 |
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374 | void GraphicsPipeline_Vulkan::cleanupBuffers() {
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375 | vkDestroyDescriptorSetLayout(device, descriptorSetLayout, nullptr);
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376 |
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377 | vkDestroyBuffer(device, vertexBuffer, nullptr);
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378 | vkFreeMemory(device, vertexBufferMemory, nullptr);
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379 | vkDestroyBuffer(device, indexBuffer, nullptr);
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380 | vkFreeMemory(device, indexBufferMemory, nullptr);
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381 | }
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