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/*
* 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 "light.hpp"
#include <array>
#include "core.hpp"
#include "uniform_data_object.hpp"
namespace
{
void
load_world_vert_uniform_buffer(void *obj)
{
auto self = static_cast<BluCat::Light*>(obj);
try
{
self->ub_world_vert.reserve(BluCat::core.vk_swapchain->images_count);
for(auto i{0}; i < BluCat::core.vk_swapchain->images_count; i++)
self->ub_world_vert.emplace_back(
BluCat::core.vk_device_with_swapchain, sizeof(BluCat::UDOWorld3D_Vert));
}
catch(const std::exception& e)
{
throw CommandError{e.what()};
}
}
void
unload_world_vert_uniform_buffer(void *obj)
{
auto self = static_cast<BluCat::Light*>(obj);
self->ub_world_vert.clear();
}
void
load_world_frag_uniform_buffer(void *obj)
{
auto self = static_cast<BluCat::Light*>(obj);
try
{
self->ub_world_frag.reserve(BluCat::core.vk_swapchain->images_count);
for(auto i{0}; i < BluCat::core.vk_swapchain->images_count; i++)
self->ub_world_frag.emplace_back(
BluCat::core.vk_device_with_swapchain, sizeof(BluCat::UDOWorld3D_Frag));
}
catch(const std::exception& e)
{
throw CommandError{e.what()};
}
}
void
unload_world_frag_uniform_buffer(void *obj)
{
auto self = static_cast<BluCat::Light*>(obj);
self->ub_world_frag.clear();
}
void
load_descriptor_pool(void *obj)
{
auto self = static_cast<BluCat::Light*>(obj);
uint32_t uniform_buffers_count =
self->ub_world_vert.size() + self->ub_world_vert.size();
VkDescriptorPoolSize descriptor_pool_size{};
descriptor_pool_size.type = VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER;
descriptor_pool_size.descriptorCount = uniform_buffers_count;
VkDescriptorPoolCreateInfo pool_info{};
pool_info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO;
pool_info.pNext = nullptr;
pool_info.flags = 0;
pool_info.maxSets = uniform_buffers_count;
pool_info.poolSizeCount = 1;
pool_info.pPoolSizes = &descriptor_pool_size;
if(vkCreateDescriptorPool(
BluCat::core.vk_device_with_swapchain->device, &pool_info, nullptr,
&self->descriptor_pool) != VK_SUCCESS)
throw CommandError{"Failed to create a Vulkan descriptor pool."};
}
void
unload_descriptor_pool(void *obj)
{
auto self = static_cast<BluCat::Light*>(obj);
vkDestroyDescriptorPool(
BluCat::core.vk_device_with_swapchain->device, self->descriptor_pool,
nullptr);
}
void
load_descriptor_sets_world(void *obj)
{
auto self = static_cast<BluCat::Light*>(obj);
std::vector<VkDescriptorSetLayout> layouts(
BluCat::core.vk_swapchain->images_count,
BluCat::core.vk_descriptor_set_layout->world);
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_world.resize(layouts.size());
if(vkAllocateDescriptorSets(
BluCat::core.vk_device_with_swapchain->device, &alloc_info,
self->descriptor_sets_world.data()) != VK_SUCCESS)
throw CommandError{"Failed to create Vulkan world descriptor set."};
}
void
load_resources_to_descriptor_sets(void *obj)
{
auto self = static_cast<BluCat::Light*>(obj);
for(auto i{0}; i < BluCat::core.vk_swapchain->images_count; i++)
{
VkDescriptorBufferInfo world_vert_info{};
world_vert_info.buffer = self->ub_world_vert[i].buffer;
world_vert_info.offset = 0;
world_vert_info.range = sizeof(BluCat::UDOWorld3D_Vert);
VkDescriptorBufferInfo world_frag_info{};
world_frag_info.buffer = self->ub_world_frag[i].buffer;
world_frag_info.offset = 0;
world_frag_info.range = sizeof(BluCat::UDOWorld3D_Frag);
std::array<VkWriteDescriptorSet, 2> write_descriptors{};
write_descriptors[0].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
write_descriptors[0].dstSet = self->descriptor_sets_world[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 = &world_vert_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->descriptor_sets_world[i];
write_descriptors[1].dstBinding = 1;
write_descriptors[1].dstArrayElement = 0;
write_descriptors[1].descriptorCount = 1;
write_descriptors[1].descriptorType = VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER;
write_descriptors[1].pBufferInfo = &world_frag_info;
write_descriptors[1].pImageInfo = nullptr;
write_descriptors[1].pTexelBufferView = nullptr;
vkUpdateDescriptorSets(
BluCat::core.vk_device_with_swapchain->device, write_descriptors.size(),
write_descriptors.data(), 0, nullptr);
}
}
const CommandChain loader{
{&load_world_vert_uniform_buffer, &unload_world_vert_uniform_buffer},
{&load_world_frag_uniform_buffer, &unload_world_frag_uniform_buffer},
{&load_descriptor_pool, &unload_descriptor_pool},
// By destroying the pool the sets are also destroyed.
{&load_descriptor_sets_world, nullptr},
{&load_resources_to_descriptor_sets, nullptr}
};
}
namespace BluCat
{
Light::Light()
{
loader.execute(this);
}
Light::~Light()
{
loader.revert(this);
}
}
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