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/* Copyright (c) 2022-2024, NVIDIA CORPORATION. All rights reserved.
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 the "License";
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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* High dynamic range rendering, using vulkan.hpp
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*/
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#pragma once
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#include <hpp_api_vulkan_sample.h>
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class HPPHDR : public HPPApiVulkanSample
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{
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public:
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HPPHDR();
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~HPPHDR();
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private:
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struct Bloom
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{
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bool enabled = true;
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vk::DescriptorSetLayout descriptor_set_layout = {};
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vk::DescriptorSet descriptor_set;
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vk::PipelineLayout pipeline_layout;
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vk::Pipeline pipelines[2];
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void destroy(vk::Device device)
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{
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device.destroyPipeline(pipelines[0]);
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device.destroyPipeline(pipelines[1]);
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device.destroyPipelineLayout(pipeline_layout);
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device.destroyDescriptorSetLayout(descriptor_set_layout);
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// no need to free the descriptor_set, as it's implicitly free'd with the descriptor_pool
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}
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};
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struct Composition
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{
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vk::DescriptorSetLayout descriptor_set_layout = {};
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vk::DescriptorSet descriptor_set = {};
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vk::PipelineLayout pipeline_layout = {};
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vk::Pipeline pipeline = {};
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void destroy(vk::Device device)
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{
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device.destroyPipeline(pipeline);
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device.destroyPipelineLayout(pipeline_layout);
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device.destroyDescriptorSetLayout(descriptor_set_layout);
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// no need to free the descriptor_set, as it's implicitly free'd with the descriptor_pool
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}
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};
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// Framebuffer for offscreen rendering
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struct FramebufferAttachment
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{
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vk::Format format = {};
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vk::Image image = {};
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vk::DeviceMemory mem = {};
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vk::ImageView view = {};
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void destroy(vk::Device device)
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{
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device.destroyImageView(view);
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device.destroyImage(image);
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device.freeMemory(mem);
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}
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};
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struct FilterPass
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{
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vk::Extent2D extent = {};
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vk::Framebuffer framebuffer = {};
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FramebufferAttachment color = {};
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vk::RenderPass render_pass = {};
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vk::Sampler sampler = {};
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void destroy(vk::Device device)
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{
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device.destroySampler(sampler);
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device.destroyFramebuffer(framebuffer);
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device.destroyRenderPass(render_pass);
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color.destroy(device);
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}
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};
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struct Geometry
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{
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vk::DescriptorSet descriptor_set = {};
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vk::Pipeline pipeline = {};
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std::vector<std::unique_ptr<vkb::scene_graph::components::HPPSubMesh>> meshes = {};
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void destroy(vk::Device device, vk::DescriptorPool descriptor_pool)
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{
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// no need to free the descriptor_set, as it's implicitly free'd with the descriptor_pool
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device.destroyPipeline(pipeline);
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}
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};
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struct Models
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{
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vk::DescriptorSetLayout descriptor_set_layout = {};
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vk::PipelineLayout pipeline_layout = {};
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Geometry objects = {};
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Geometry skybox = {};
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std::vector<glm::mat4> transforms = {};
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int32_t object_index = 0;
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void destroy(vk::Device device, vk::DescriptorPool descriptor_pool)
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{
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objects.destroy(device, descriptor_pool);
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skybox.destroy(device, descriptor_pool);
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device.destroyPipelineLayout(pipeline_layout);
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device.destroyDescriptorSetLayout(descriptor_set_layout);
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}
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};
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struct Offscreen
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{
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vk::Extent2D extent = {};
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vk::Framebuffer framebuffer = {};
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FramebufferAttachment color[2] = {};
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FramebufferAttachment depth = {};
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vk::RenderPass render_pass = {};
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vk::Sampler sampler = {};
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void destroy(vk::Device device)
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{
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device.destroySampler(sampler);
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device.destroyFramebuffer(framebuffer);
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device.destroyRenderPass(render_pass);
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color[0].destroy(device);
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color[1].destroy(device);
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depth.destroy(device);
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}
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};
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struct Textures
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{
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HPPTexture envmap;
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void destroy(vk::Device device)
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{
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device.destroySampler(envmap.sampler);
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}
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};
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struct UBOMatrices
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{
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glm::mat4 projection;
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glm::mat4 modelview;
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glm::mat4 skybox_modelview;
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glm::mat4 inverse_modelview;
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float modelscale = 0.05f;
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};
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struct UBOParams
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{
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float exposure = 1.0f;
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};
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struct UniformBuffers
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{
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std::unique_ptr<vkb::core::BufferCpp> matrices;
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std::unique_ptr<vkb::core::BufferCpp> params;
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};
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private:
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// from vkb::Application
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virtual bool prepare(const vkb::ApplicationOptions &options) override;
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virtual bool resize(const uint32_t width, const uint32_t height) override;
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// from vkb::VulkanSample
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virtual void request_gpu_features(vkb::core::HPPPhysicalDevice &gpu) override;
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// from HPPApiVulkanSample
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virtual void build_command_buffers() override;
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virtual void on_update_ui_overlay(vkb::Drawer &drawer) override;
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virtual void render(float delta_time) override;
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vk::DeviceMemory allocate_memory(vk::Image image);
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FramebufferAttachment create_attachment(vk::Format format, vk::ImageUsageFlagBits usage);
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vk::DescriptorPool create_descriptor_pool();
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vk::Pipeline create_bloom_pipeline(uint32_t direction);
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vk::Pipeline create_composition_pipeline();
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vk::RenderPass create_filter_render_pass();
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vk::Image create_image(vk::Format format, vk::ImageUsageFlagBits usage);
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vk::Pipeline create_models_pipeline(uint32_t shaderType, vk::CullModeFlagBits cullMode, bool depthTestAndWrite);
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vk::RenderPass create_offscreen_render_pass();
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vk::RenderPass create_render_pass(std::vector<vk::AttachmentDescription> const &attachment_descriptions, vk::SubpassDescription const &subpass_description);
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void draw();
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void load_assets();
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void prepare_bloom();
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void prepare_camera();
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void prepare_composition();
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void prepare_models();
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void prepare_offscreen_buffer();
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void prepare_uniform_buffers();
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void update_composition_descriptor_set();
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void update_bloom_descriptor_set();
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void update_model_descriptor_set(vk::DescriptorSet descriptor_set);
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void update_params();
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void update_uniform_buffers();
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private:
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Bloom bloom;
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Composition composition;
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bool display_skybox = true;
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FilterPass filter_pass;
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Models models;
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std::vector<std::string> object_names;
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Offscreen offscreen;
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Textures textures;
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UBOMatrices ubo_matrices;
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UBOParams ubo_params;
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UniformBuffers uniform_buffers;
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};
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std::unique_ptr<vkb::Application> create_hpp_hdr();
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