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Diffstat (limited to 'src/vk/model.cpp')
| -rw-r--r-- | src/vk/model.cpp | 324 |
1 files changed, 324 insertions, 0 deletions
diff --git a/src/vk/model.cpp b/src/vk/model.cpp new file mode 100644 index 0000000..d47db8a --- /dev/null +++ b/src/vk/model.cpp @@ -0,0 +1,324 @@ +/* + * Copyright 2022 Frederico de Oliveira Linhares + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include "model.hpp" + +#include <array> +#include <fstream> + +#include "../command.hpp" +#include "../core.hpp" +#include "vertex.hpp" + +namespace +{ + +// Data that is only needed for the command chain but not for the Model goes +// here. +struct ModelBuilder +{ + std::string model_path; + VK::Model *model; + + ModelBuilder(VK::Model *m, std::string mp); + ModelBuilder(VK::Model *m, const char* mp); +}; + +ModelBuilder::ModelBuilder(VK::Model *m, std::string mp): + model{m}, + model_path{mp} +{ +} + +ModelBuilder::ModelBuilder(VK::Model *m, const char *mp): + ModelBuilder{m, std::string(mp)} +{ +} + +struct MeshData +{ + glm::vec3 color; + + uint32_t vertex_base; + uint32_t vertex_count; + uint32_t index_base; + uint32_t index_count; +}; + +uint32_t read_uint32_from_file(std::ifstream &input_file) +{ + uint32_t data{}; + input_file.read((char*)&data, sizeof(uint32_t)); + return data; +} + +glm::vec2 read_vec2_from_file(std::ifstream &input_file) +{ + glm::vec2 data{}; + input_file.read((char*)&data.x, sizeof(glm::vec2::value_type)); + input_file.read((char*)&data.y, sizeof(glm::vec2::value_type)); + return data; +} + +glm::vec3 read_vec3_from_file(std::ifstream &input_file) +{ + glm::vec3 data{}; + input_file.read((char*)&data.x, sizeof(glm::vec3::value_type)); + input_file.read((char*)&data.y, sizeof(glm::vec3::value_type)); + input_file.read((char*)&data.z, sizeof(glm::vec3::value_type)); + return data; +} + +void +load_mesh(void *obj) +{ + auto self = static_cast<ModelBuilder*>(obj); + + std::ifstream input_file{self->model_path}; + if(!input_file.is_open()) throw CommandError{"Failed to open file."}; + + std::vector<MeshData> meshes{}; + + self->model->queue_family = + cg_core.vk_device_with_swapchain->get_queue_family_with_graphics(); + VK::Queue transfer_queue{self->model->queue_family->get_queue()}; + + // Load meshes. + { + uint32_t meshes_count{read_uint32_from_file(input_file)}; + meshes.resize(meshes_count); + + for(uint32_t i{0}; i < meshes_count; i++) + { + meshes[i].color = read_vec3_from_file(input_file); + + meshes[i].vertex_base = read_uint32_from_file(input_file); + meshes[i].vertex_count = read_uint32_from_file(input_file); + meshes[i].index_base = read_uint32_from_file(input_file); + meshes[i].index_count = read_uint32_from_file(input_file); + } + } + + // Load vertexes. + { + uint32_t vertex_count{read_uint32_from_file(input_file)}; + std::vector<VK::Vertex> vertexes{vertex_count}; + + for(auto mesh: meshes) + { + for(uint32_t i{mesh.vertex_base}; i < mesh.vertex_count; i++) + { + vertexes[i].position = read_vec3_from_file(input_file); + vertexes[i].normal = read_vec3_from_file(input_file); + vertexes[i].texture_coord = read_vec2_from_file(input_file); + vertexes[i].color = mesh.color; + } + } + + void *vertexes_data{vertexes.data()}; + size_t vertexes_size = sizeof(vertexes[0]) * vertexes.size(); + self->model->source_vertex_buffer = new VK::SourceBuffer{ + self->model->queue_family->device, vertexes_data, vertexes_size}; + self->model->vertex_buffer = new VK::DestinationBuffer{ + self->model->queue_family, self->model->source_vertex_buffer, + VK_BUFFER_USAGE_VERTEX_BUFFER_BIT}; + } + + // Load indexes. + { + self->model->index_count = read_uint32_from_file(input_file); + std::vector<uint32_t> indexes(self->model->index_count); + + for(uint32_t i{0}; i < self->model->index_count; i++) + { + indexes[i] = read_uint32_from_file(input_file); + } + + void *indexes_data{indexes.data()}; + size_t indexes_size{sizeof(indexes[0]) * indexes.size()}; + VK::SourceBuffer source_index_buffer{ + self->model->queue_family->device, indexes_data, indexes_size}; + self->model->index_buffer = new VK::DestinationBuffer{ + self->model->queue_family, &source_index_buffer, + VK_BUFFER_USAGE_INDEX_BUFFER_BIT}; + } +} + +void +unload_mesh(void *obj) +{ + auto self = static_cast<ModelBuilder*>(obj); + + delete self->model->index_buffer; + delete self->model->vertex_buffer; + delete self->model->source_vertex_buffer; +} + +auto +load_uniform_buffers(void *obj) +{ + auto self = static_cast<ModelBuilder*>(obj); + + self->model->ub_model_instance.reserve(cg_core.vk_swapchain->images_count); + for(int i{0}; i < cg_core.vk_swapchain->images_count; i++) + self->model->ub_model_instance.emplace_back( + cg_core.vk_device_with_swapchain, sizeof(VK::UBOModelInstance)); +} + +void +unload_uniform_buffers(void *obj) +{ + auto self = static_cast<ModelBuilder*>(obj); + + self->model->ub_model_instance.clear(); +} + +void +load_descriptor_set_pool(void *obj) +{ + auto self = static_cast<ModelBuilder*>(obj); + + std::array<VkDescriptorPoolSize, 2> descriptor_pool_sizes{}; + descriptor_pool_sizes[0].type = VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER; + descriptor_pool_sizes[0].descriptorCount = + self->model->ub_model_instance.size(); + descriptor_pool_sizes[1].type = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER; + descriptor_pool_sizes[1].descriptorCount = + self->model->ub_model_instance.size(); + + VkDescriptorPoolCreateInfo pool_info{}; + pool_info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO; + pool_info.pNext = nullptr; + pool_info.flags = 0; + pool_info.maxSets = self->model->ub_model_instance.size(); + pool_info.poolSizeCount = descriptor_pool_sizes.size(); + pool_info.pPoolSizes = descriptor_pool_sizes.data(); + + if(vkCreateDescriptorPool( + self->model->queue_family->device->device, &pool_info, nullptr, + &self->model->descriptor_pool) != VK_SUCCESS) + throw CommandError{"Failed to create a Vulkan descriptor pool."}; +} + +void +unload_descriptor_set_pool(void *obj) +{ + auto self = static_cast<ModelBuilder*>(obj); + + vkDestroyDescriptorPool( + self->model->queue_family->device->device, self->model->descriptor_pool, + nullptr); +} + +void +load_descriptor_sets(void *obj) +{ + auto self = static_cast<ModelBuilder*>(obj); + + std::vector<VkDescriptorSetLayout> layouts( + cg_core.vk_swapchain->images_count, + cg_core.vk_graphics_pipeline->descriptor_set_layout_model_instance); + + VkDescriptorSetAllocateInfo alloc_info{}; + alloc_info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO; + alloc_info.descriptorPool = self->model->descriptor_pool; + alloc_info.descriptorSetCount = layouts.size(); + alloc_info.pSetLayouts = layouts.data(); + + self->model->descriptor_sets.resize(layouts.size()); + if(vkAllocateDescriptorSets( + self->model->queue_family->device->device, &alloc_info, + self->model->descriptor_sets.data()) != VK_SUCCESS) + CommandError{"Failed to create Vulkan descriptor set."}; +} + +void +load_buffers_to_descriptor_sets(void *obj) +{ + auto self = static_cast<ModelBuilder*>(obj); + + for(auto i{0}; i < self->model->ub_model_instance.size(); i++) + { + VkDescriptorBufferInfo buffer_info{}; + buffer_info.buffer = self->model->ub_model_instance[i].buffer; + buffer_info.offset = 0; + buffer_info.range = sizeof(VK::UBOModelInstance); + + VkDescriptorImageInfo image_info{}; + image_info.imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL; + image_info.imageView = self->model->texture->view; + image_info.sampler = self->model->texture->sampler; + + std::array<VkWriteDescriptorSet, 2> write_descriptors{}; + write_descriptors[0].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET; + write_descriptors[0].dstSet = self->model->descriptor_sets[i]; + write_descriptors[0].dstBinding = 0; + write_descriptors[0].dstArrayElement = 0; + write_descriptors[0].descriptorCount = 1; + write_descriptors[0].descriptorType = VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER; + write_descriptors[0].pBufferInfo = &buffer_info; + write_descriptors[0].pImageInfo = nullptr; + write_descriptors[0].pTexelBufferView = nullptr; + + write_descriptors[1].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET; + write_descriptors[1].dstSet = self->model->descriptor_sets[i]; + write_descriptors[1].dstBinding = 1; + write_descriptors[1].dstArrayElement = 0; + write_descriptors[1].descriptorCount = 1; + write_descriptors[1].descriptorType = + VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER; + write_descriptors[1].pBufferInfo = nullptr; + write_descriptors[1].pImageInfo = &image_info; + write_descriptors[1].pTexelBufferView = nullptr; + + vkUpdateDescriptorSets( + cg_core.vk_device_with_swapchain->device, write_descriptors.size(), + write_descriptors.data(), 0, nullptr); + } +} + +static const CommandChain loader{ + {&load_mesh, &unload_mesh}, + {&load_uniform_buffers, &unload_uniform_buffers}, + {&load_descriptor_set_pool, &unload_descriptor_set_pool}, + {&load_descriptor_sets, nullptr}, + {&load_buffers_to_descriptor_sets, nullptr}, +}; + +} + +namespace VK +{ + +Model::Model(std::string model_path, std::shared_ptr<Texture> texture): + texture{texture} +{ + ModelBuilder model_builder(this, model_path); + loader.execute(&model_builder); +} + +Model::Model(const char* model_path, std::shared_ptr<Texture> texture): + Model{std::string(model_path), texture} +{ +} + +Model::~Model() +{ + ModelBuilder model_builder(this, ""); + loader.revert(&model_builder); +} + +} |