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2025-09-04 10:54:47 +08:00
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+/* Copyright (c) 2024, Sascha Willems
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * 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.
+ */
+
+#pragma once
+
+#include <ktx.h>
+
+#include "api_vulkan_sample.h"
+
+class HostImageCopy : public ApiVulkanSample
+{
+  public:
+	// Contains all Vulkan objects that are required to store and use a texture
+	// 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
+	struct Texture
+	{
+		VkSampler      sampler;
+		VkImage        image;
+		VkDeviceMemory device_memory;
+		VkImageView    view;
+		uint32_t       width, height;
+		uint32_t       mip_levels;
+	} texture{};
+
+	std::unique_ptr<vkb::sg::SubMesh> cube;
+
+	struct
+	{
+		glm::mat4 projection{1.0f};
+		glm::mat4 model{1.0f};
+		glm::vec4 view_pos{0.0f};
+		float     lod_bias = 0.0f;
+	} ubo_vs;
+
+	std::unique_ptr<vkb::core::BufferC> uniform_buffer_vs;
+
+	VkPipeline            pipeline{VK_NULL_HANDLE};
+	VkPipelineLayout      pipeline_layout{VK_NULL_HANDLE};
+	VkDescriptorSet       descriptor_set{VK_NULL_HANDLE};
+	VkDescriptorSetLayout descriptor_set_layout{VK_NULL_HANDLE};
+
+	HostImageCopy();
+	~HostImageCopy();
+	virtual void request_gpu_features(vkb::PhysicalDevice &gpu) override;
+	void         load_texture();
+	void         load_assets();
+	void         destroy_texture(Texture texture);
+	void         build_command_buffers() override;
+	void         draw();
+	void         setup_descriptor_pool();
+	void         setup_descriptor_set_layout();
+	void         setup_descriptor_set();
+	void         prepare_pipelines();
+	void         prepare_uniform_buffers();
+	void         update_uniform_buffers();
+	bool         prepare(const vkb::ApplicationOptions &options) override;
+	virtual void render(float delta_time) override;
+	virtual void view_changed() override;
+	virtual void on_update_ui_overlay(vkb::Drawer &drawer) override;
+};
+
+std::unique_ptr<vkb::VulkanSampleC> create_host_image_copy();