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/*
* 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 "view_2d.hpp"
#include <array>
#include "../core.hpp"
#include "uniform_buffer_object.hpp"
namespace
{
void
load_2d_uniform_buffer(void *obj)
{
auto self = static_cast<VK::View2D*>(obj);
try
{
self->ub_2d.reserve(cg_core.vk_swapchain->images_count);
for(auto i{0}; i < cg_core.vk_swapchain->images_count; i++)
self->ub_2d.emplace_back(
cg_core.vk_device_with_swapchain, sizeof(VK::UBOView2D));
}
catch(const std::exception& e)
{
throw CommandError{e.what()};
}
}
void
unload_2d_uniform_buffer(void *obj)
{
auto self = static_cast<VK::View2D*>(obj);
self->ub_2d.clear();
}
void
load_descriptor_sets_2d(void *obj)
{
auto self = static_cast<VK::View2D*>(obj);
std::vector<VkDescriptorSetLayout> layouts(
cg_core.vk_swapchain->images_count,
cg_core.vk_graphics_pipeline_2d_solid_layout->descriptor_set_view);
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_2d.resize(layouts.size());
if(vkAllocateDescriptorSets(
cg_core.vk_device_with_swapchain->device, &alloc_info,
self->descriptor_sets_2d.data()) != VK_SUCCESS)
throw CommandError{"Failed to create Vulkan descriptor sets for view."};
}
void
load_resources_to_descriptor_sets_2d(void *obj)
{
auto self = static_cast<VK::View2D*>(obj);
for(auto i{0}; i < self->ub_2d.size(); i++)
{
VkDescriptorBufferInfo view_2d_info{};
view_2d_info.buffer = self->ub_2d[i].buffer;
view_2d_info.offset = 0;
view_2d_info.range = sizeof(VK::UBOView2D);
std::array<VkWriteDescriptorSet, 1> write_descriptors{};
write_descriptors[0].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
write_descriptors[0].dstSet = self->descriptor_sets_2d[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 = &view_2d_info;
write_descriptors[0].pImageInfo = nullptr;
write_descriptors[0].pTexelBufferView = nullptr;
vkUpdateDescriptorSets(
cg_core.vk_device_with_swapchain->device, write_descriptors.size(),
write_descriptors.data(), 0, nullptr);
VK::UBOView2D ubo_view_2d;
ubo_view_2d.proj = glm::ortho(
0.0f, self->projection_width,
0.0f, self->projection_height,
0.0f, 100.0f);
self->ub_2d[i].copy_data(&ubo_view_2d);
}
}
}
namespace VK
{
const CommandChain View2D::loader{
{&load_2d_uniform_buffer, &unload_2d_uniform_buffer}
};
const CommandChain View2D::descriptor_sets_loader{
{&load_descriptor_sets_2d, nullptr},
{&load_resources_to_descriptor_sets_2d, nullptr}
};
View2D::View2D(
glm::vec4 region, float projection_width, float projection_height):
projection_width{projection_width},
projection_height{projection_height},
region{region},
descriptor_pool{VK_NULL_HANDLE},
rectangles_to_draw{cg_core.vk_swapchain->images_count},
sprites_to_draw{cg_core.vk_swapchain->images_count}
{
loader.execute(this);
}
View2D::~View2D()
{
loader.revert(this);
}
void
View2D::load_descriptor_sets(VkDescriptorPool descriptor_pool)
{
if(this->descriptor_pool != VK_NULL_HANDLE) return;
this->descriptor_pool = descriptor_pool;
descriptor_sets_loader.execute(this);
}
void
View2D::unload_descriptor_sets()
{
if(this->descriptor_pool == VK_NULL_HANDLE) return;
this->descriptor_pool = VK_NULL_HANDLE;
descriptor_sets_loader.revert(this);
}
}
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