Refactoring

ray_tracing_motionblur/hello_vulkan.h

@@ -0,0 +1,156 @@
+/*
+ * Copyright (c) 2014-2021, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * 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.
+ *
+ * SPDX-FileCopyrightText: Copyright (c) 2014-2021 NVIDIA CORPORATION
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#pragma once
+
+#include "nvvk/appbase_vk.hpp"
+#include "nvvk/debug_util_vk.hpp"
+#include "nvvk/descriptorsets_vk.hpp"
+#include "nvvk/memallocator_dma_vk.hpp"
+#include "nvvk/resourceallocator_vk.hpp"
+#include "shaders/host_device.h"
+
+// #VKRay
+#include "nvvk/raytraceKHR_vk.hpp"
+
+//--------------------------------------------------------------------------------------------------
+// Simple rasterizer of OBJ objects
+// - Each OBJ loaded are stored in an `ObjModel` and referenced by a `ObjInstance`
+// - It is possible to have many `ObjInstance` referencing the same `ObjModel`
+// - Rendering is done in an offscreen framebuffer
+// - The image of the framebuffer is displayed in post-process in a full-screen quad
+//
+class HelloVulkan : public nvvk::AppBaseVk
+{
+public:
+  void setup(const VkInstance& instance, const VkDevice& device, const VkPhysicalDevice& physicalDevice, uint32_t queueFamily) override;
+  void createDescriptorSetLayout();
+  void createGraphicsPipeline();
+  void loadModel(const std::string& filename, nvmath::mat4f transform = nvmath::mat4f(1));
+  void updateDescriptorSet();
+  void createUniformBuffer();
+  void createObjDescriptionBuffer();
+  void createTextureImages(const VkCommandBuffer& cmdBuf, const std::vector<std::string>& textures);
+  void updateUniformBuffer(const VkCommandBuffer& cmdBuf);
+  void onResize(int /*w*/, int /*h*/) override;
+  void destroyResources();
+  void rasterize(const VkCommandBuffer& cmdBuff);
+
+  // The OBJ model
+  struct ObjModel
+  {
+    uint32_t     nbIndices{0};
+    uint32_t     nbVertices{0};
+    nvvk::Buffer vertexBuffer;    // Device buffer of all 'Vertex'
+    nvvk::Buffer indexBuffer;     // Device buffer of the indices forming triangles
+    nvvk::Buffer matColorBuffer;  // Device buffer of array of 'Wavefront material'
+    nvvk::Buffer matIndexBuffer;  // Device buffer of array of 'Wavefront material'
+  };
+
+  // Instance of the OBJ
+  struct ObjInstance
+  {
+    nvmath::mat4f transform;    // Matrix of the instance
+    uint32_t      objIndex{0};  // Model index reference
+  };
+
+
+  // Information pushed at each draw call
+  PushConstantRaster m_pcRaster{
+      {1},                  // Identity matrix
+      {9.5f, 5.5f, -6.5f},  // light position
+      0,                    // instance Id
+      100.f,                // light intensity
+      0                     // light type
+  };
+
+  // Array of objects and instances in the scene
+  std::vector<ObjModel>    m_objModel;   // Model on host
+  std::vector<ObjDesc>     m_objDesc;    // Model description for device access
+  std::vector<ObjInstance> m_instances;  // Scene model instances
+
+
+  // Graphic pipeline
+  VkPipelineLayout            m_pipelineLayout;
+  VkPipeline                  m_graphicsPipeline;
+  nvvk::DescriptorSetBindings m_descSetLayoutBind;
+  VkDescriptorPool            m_descPool;
+  VkDescriptorSetLayout       m_descSetLayout;
+  VkDescriptorSet             m_descSet;
+
+  nvvk::Buffer m_bGlobals;  // Device-Host of the camera matrices
+  nvvk::Buffer m_bObjDesc;  // Device buffer of the OBJ descriptions
+
+  std::vector<nvvk::Texture> m_textures;  // vector of all textures of the scene
+
+
+  nvvk::ResourceAllocatorDma m_alloc;  // Allocator for buffer, images, acceleration structures
+  nvvk::DebugUtil            m_debug;  // Utility to name objects
+
+
+  // #Post - Draw the rendered image on a quad using a tonemapper
+  void createOffscreenRender();
+  void createPostPipeline();
+  void createPostDescriptor();
+  void updatePostDescriptorSet();
+  void drawPost(VkCommandBuffer cmdBuf);
+
+  nvvk::DescriptorSetBindings m_postDescSetLayoutBind;
+  VkDescriptorPool            m_postDescPool{VK_NULL_HANDLE};
+  VkDescriptorSetLayout       m_postDescSetLayout{VK_NULL_HANDLE};
+  VkDescriptorSet             m_postDescSet{VK_NULL_HANDLE};
+  VkPipeline                  m_postPipeline{VK_NULL_HANDLE};
+  VkPipelineLayout            m_postPipelineLayout{VK_NULL_HANDLE};
+  VkRenderPass                m_offscreenRenderPass{VK_NULL_HANDLE};
+  VkFramebuffer               m_offscreenFramebuffer{VK_NULL_HANDLE};
+  nvvk::Texture               m_offscreenColor;
+  nvvk::Texture               m_offscreenDepth;
+  VkFormat                    m_offscreenColorFormat{VK_FORMAT_R32G32B32A32_SFLOAT};
+  VkFormat                    m_offscreenDepthFormat{VK_FORMAT_X8_D24_UNORM_PACK32};
+
+  // #VKRay
+  void initRayTracing();
+  auto objectToVkGeometryKHR(const ObjModel& model);
+  void createBottomLevelAS();
+  void createTopLevelAS();
+  void createRtDescriptorSet();
+  void updateRtDescriptorSet();
+  void createRtPipeline();
+  void createRtShaderBindingTable();
+  void raytrace(const VkCommandBuffer& cmdBuf, const nvmath::vec4f& clearColor);
+  void updateFrame();
+  void resetFrame();
+
+
+  VkPhysicalDeviceRayTracingPipelinePropertiesKHR m_rtProperties{VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_RAY_TRACING_PIPELINE_PROPERTIES_KHR};
+  nvvk::RaytracingBuilderKHR                      m_rtBuilder;
+  nvvk::DescriptorSetBindings                     m_rtDescSetLayoutBind;
+  VkDescriptorPool                                m_rtDescPool;
+  VkDescriptorSetLayout                           m_rtDescSetLayout;
+  VkDescriptorSet                                 m_rtDescSet;
+  std::vector<VkRayTracingShaderGroupCreateInfoKHR> m_rtShaderGroups;
+  VkPipelineLayout                                  m_rtPipelineLayout;
+  VkPipeline                                        m_rtPipeline;
+  nvvk::Buffer                                      m_rtSBTBuffer;
+
+  // Push constant for ray tracer
+  PushConstantRay m_pcRay{};
+
+  int m_maxFrames{1000};
+};