107 lines
3.2 KiB
C++
107 lines
3.2 KiB
C++
/* Copyright (c) 2021-2024, 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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* Texture loading (and display) example (including mip maps), 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 HPPTextureLoading : public HPPApiVulkanSample
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{
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public:
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HPPTextureLoading();
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~HPPTextureLoading();
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private:
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// Contains all Vulkan objects that are required to store and use a texture
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// Note that this repository contains a texture class (vulkan_texture.h) that encapsulates texture loading functionality in a class that is used in subsequent demos
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struct Texture
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{
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vk::DeviceMemory device_memory;
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vk::Image image;
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vk::ImageLayout image_layout;
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vk::ImageView image_view;
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vk::Sampler sampler;
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vk::Extent2D extent;
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uint32_t mip_levels;
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void destroy(vk::Device device)
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{
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device.destroyImageView(image_view);
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device.destroyImage(image);
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device.destroySampler(sampler);
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device.freeMemory(device_memory);
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}
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};
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// Vertex layout for this example
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struct Vertex
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{
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float pos[3];
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float uv[2];
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float normal[3];
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};
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struct VertexShaderData
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{
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glm::mat4 projection;
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glm::mat4 model;
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glm::vec4 view_pos;
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float lod_bias = 0.0f;
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};
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private:
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// from vkb::Application
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bool prepare(const vkb::ApplicationOptions &options) override;
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// from vkb::VulkanSample
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void request_gpu_features(vkb::core::HPPPhysicalDevice &gpu) override;
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// from HPPApiVulkanSample
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void build_command_buffers() override;
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void on_update_ui_overlay(vkb::Drawer &drawer) override;
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void render(float delta_time) override;
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void view_changed() override;
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vk::DescriptorPool create_descriptor_pool();
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vk::DescriptorSetLayout create_descriptor_set_layout();
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vk::Pipeline create_pipeline();
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void draw();
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void generate_quad();
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void load_texture();
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void prepare_uniform_buffers();
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void update_descriptor_set();
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void update_uniform_buffers();
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private:
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vk::DescriptorSet descriptor_set;
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vk::DescriptorSetLayout descriptor_set_layout;
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std::unique_ptr<vkb::core::BufferCpp> index_buffer;
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uint32_t index_count;
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vk::Pipeline pipeline;
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vk::PipelineLayout pipeline_layout;
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Texture texture;
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std::unique_ptr<vkb::core::BufferCpp> vertex_buffer;
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VertexShaderData vertex_shader_data;
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std::unique_ptr<vkb::core::BufferCpp> vertex_shader_data_buffer;
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};
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std::unique_ptr<vkb::Application> create_hpp_texture_loading();
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