diff options
Diffstat (limited to 'src/blu_cat/gra/skeletal_model.cpp')
| -rw-r--r-- | src/blu_cat/gra/skeletal_model.cpp | 239 |
1 files changed, 239 insertions, 0 deletions
diff --git a/src/blu_cat/gra/skeletal_model.cpp b/src/blu_cat/gra/skeletal_model.cpp new file mode 100644 index 0000000..b58982d --- /dev/null +++ b/src/blu_cat/gra/skeletal_model.cpp @@ -0,0 +1,239 @@ +/* + * Copyright 2022-2024 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 "skeletal_model.hpp" + +#include "../int/core.hpp" +#include "uniform_data_object.hpp" + +namespace +{ + +void +load_uniform_buffers(void *obj) +{ + auto self = static_cast<BluCat::GRA::SkeletalModel*>(obj); + + try + { + self->uniform_buffers.reserve(BluCat::INT::core.vk_swapchain->images_count); + for(auto i{0}; i < BluCat::INT::core.vk_swapchain->images_count; i++) + self->uniform_buffers.emplace_back( + BluCat::INT::core.vk_device_with_swapchain, + sizeof(BluCat::GRA::UDOSkeletalModel)); + } + catch(const std::exception& e) + { + throw CommandError{e.what()}; + } +} + +void +unload_uniform_buffers(void *obj) +{ + auto self = static_cast<BluCat::GRA::SkeletalModel*>(obj); + + self->uniform_buffers.clear(); +} + +void +load_descriptor_set_pool(void *obj) +{ + auto self = static_cast<BluCat::GRA::SkeletalModel*>(obj); + + std::array<VkDescriptorPoolSize, 1> descriptor_pool_sizes{}; + descriptor_pool_sizes[0].type = VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER; + descriptor_pool_sizes[0].descriptorCount = + self->uniform_buffers.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->uniform_buffers.size(); + pool_info.poolSizeCount = descriptor_pool_sizes.size(); + pool_info.pPoolSizes = descriptor_pool_sizes.data(); + + if(vkCreateDescriptorPool( + self->skeletal_mesh->queue_family->device->device, &pool_info, nullptr, + &self->descriptor_pool) != VK_SUCCESS) + throw CommandError{"Failed to create a Vulkan descriptor pool."}; +} + +void +unload_descriptor_set_pool(void *obj) +{ + auto self = static_cast<BluCat::GRA::SkeletalModel*>(obj); + + vkDestroyDescriptorPool( + self->skeletal_mesh->queue_family->device->device, self->descriptor_pool, + nullptr); +} + +void +load_descriptor_sets(void *obj) +{ + auto self = static_cast<BluCat::GRA::SkeletalModel*>(obj); + + std::vector<VkDescriptorSetLayout> layouts( + BluCat::INT::core.vk_swapchain->images_count, + BluCat::INT::core.vk_descriptor_set_layout->model); + + VkDescriptorSetAllocateInfo alloc_info{}; + alloc_info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO; + alloc_info.descriptorPool = self->descriptor_pool; + alloc_info.descriptorSetCount = layouts.size(); + alloc_info.pSetLayouts = layouts.data(); + + self->descriptor_sets.resize(layouts.size()); + if(vkAllocateDescriptorSets( + self->skeletal_mesh->queue_family->device->device, &alloc_info, + self->descriptor_sets.data()) != VK_SUCCESS) + CommandError{"Failed to create Vulkan descriptor set."}; +} + +void +load_buffers_to_descriptor_sets(void *obj) +{ + auto self = static_cast<BluCat::GRA::SkeletalModel*>(obj); + + for(auto i{0}; i < self->uniform_buffers.size(); i++) + { + VkDescriptorBufferInfo buffer_info{}; + buffer_info.buffer = self->uniform_buffers[i].buffer; + buffer_info.offset = 0; + buffer_info.range = sizeof(BluCat::GRA::UDOSkeletalModel); + + std::array<VkWriteDescriptorSet, 1> write_descriptors{}; + write_descriptors[0].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET; + write_descriptors[0].dstSet = self->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; + + vkUpdateDescriptorSets( + BluCat::INT::core.vk_device_with_swapchain->device, write_descriptors.size(), + write_descriptors.data(), 0, nullptr); + } +} + +static const CommandChain loader{ + {&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 BluCat::GRA +{ + +SkeletalModel::SkeletalModel( + std::shared_ptr<SkeletalMesh> skeletal_mesh, + std::shared_ptr<Texture> texture, std::shared_ptr<glm::vec3> position, + std::shared_ptr<glm::quat> orientation): + skeletal_mesh{skeletal_mesh}, + texture{texture}, + position{position}, + orientation{orientation}, + animation_index{0}, + animation_time{0.0f}, + bone_transforms(SKELETAL_MESH_MAX_NUM_OF_BONES) +{ + loader.execute(this); + + for(int i{0}; i < skeletal_mesh->bones.size(); i++) + this->bone_transforms[i] = skeletal_mesh->bones[i].offset_matrix; +} + +SkeletalModel::~SkeletalModel() +{ + loader.revert(this); +} + +void +SkeletalModel::tick(float delta) +{ + BluCat::GRA::Animation *current_animation = + &this->skeletal_mesh->animations[this->animation_index]; + + { // update time + this->animation_time += delta; + if(this->animation_time > current_animation->final_time) + { + this->animation_time -= current_animation->final_time; + for(BluCat::GRA::BoneTransform &bone_transform: + current_animation->bone_transforms) + { + bone_transform.positions.current_index = 0; + bone_transform.rotations.current_index = 0; + bone_transform.scales.current_index = 0; + } + } + } + + for(int i{0}; i < current_animation->bone_transforms.size(); i++) + { + BluCat::GRA::BoneTransform *bone_transform = ¤t_animation->bone_transforms[i]; + + auto position{bone_transform->positions.interpolate( + this->animation_time, + [](glm::vec3 frame) + { + return glm::translate(glm::mat4(1.0f), frame); + }, + [](glm::vec3 previous_frame, glm::vec3 next_frame, float scale_factor) + { + glm::vec3 final_position{glm::mix( + previous_frame, next_frame, scale_factor)}; + return glm::translate(glm::mat4(1.0f), final_position); + })}; + + auto rotation{bone_transform->rotations.interpolate( + this->animation_time, + [](glm::quat frame) + { + return glm::toMat4(glm::normalize(frame)); + }, + [](glm::quat previous_frame, glm::quat next_frame, float scale_factor) + { + return glm::toMat4(glm::slerp( + previous_frame, next_frame, scale_factor)); + })}; + + auto scale{bone_transform->scales.interpolate( + this->animation_time, + [](glm::vec3 frame) + { + return glm::scale(glm::mat4(1.0f), frame); + }, + [](glm::vec3 previous_frame, glm::vec3 next_frame, float scale_factor) + { + glm::vec3 scale{glm::mix( + previous_frame, next_frame, scale_factor)}; + return glm::scale(glm::mat4(1.0f), scale); + })}; + + this->bone_transforms[i] = position * rotation * scale; + } +} + +} |