New version of the samples and tutorials based on KHR_ray_tracing
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mklefrancois
parent
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commit
b6402f0c09
271 changed files with 134108 additions and 2 deletions
594
ray_tracing__advance/hello_vulkan.cpp
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594
ray_tracing__advance/hello_vulkan.cpp
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/* Copyright (c) 2014-2018, NVIDIA CORPORATION. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of NVIDIA CORPORATION nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sstream>
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#include <vulkan/vulkan.hpp>
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extern std::vector<std::string> defaultSearchPaths;
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#define STB_IMAGE_IMPLEMENTATION
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#include "fileformats/stb_image.h"
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#include "obj_loader.h"
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#include "hello_vulkan.h"
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#include "nvh//cameramanipulator.hpp"
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#include "nvvkpp/descriptorsets_vkpp.hpp"
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#include "nvvkpp/pipeline_vkpp.hpp"
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#include "nvh/fileoperations.hpp"
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#include "nvvkpp/commands_vkpp.hpp"
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#include "nvvkpp/renderpass_vkpp.hpp"
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#include "nvvkpp/utilities_vkpp.hpp"
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// Holding the camera matrices
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struct CameraMatrices
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{
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nvmath::mat4f view;
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nvmath::mat4f proj;
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nvmath::mat4f viewInverse;
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// #VKRay
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nvmath::mat4f projInverse;
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};
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//--------------------------------------------------------------------------------------------------
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// Keep the handle on the device
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// Initialize the tool to do all our allocations: buffers, images
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//
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void HelloVulkan::setup(const vk::Device& device,
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const vk::PhysicalDevice& physicalDevice,
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uint32_t queueFamily)
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{
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AppBase::setup(device, physicalDevice, queueFamily);
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#if defined(ALLOC_DEDICATED)
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m_alloc.init(device, physicalDevice);
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#elif defined(ALLOC_DMA)
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m_memAllocator.init(device, physicalDevice);
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m_memAllocator.setAllocateFlags(VK_MEMORY_ALLOCATE_DEVICE_ADDRESS_BIT_KHR, true);
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m_alloc.init(device, &m_memAllocator);
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#elif defined(ALLOC_VMA)
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VmaAllocatorCreateInfo allocatorInfo = {};
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allocatorInfo.physicalDevice = physicalDevice;
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allocatorInfo.device = device;
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allocatorInfo.flags |=
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VMA_ALLOCATOR_CREATE_KHR_DEDICATED_ALLOCATION_BIT | VMA_ALLOCATOR_CREATE_KHR_BIND_MEMORY2_BIT;
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vmaCreateAllocator(&allocatorInfo, &m_memAllocator);
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m_alloc.init(device, m_memAllocator);
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#endif
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m_debug.setup(m_device);
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m_offscreen.setup(device, m_memAllocator, queueFamily);
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m_raytrace.setup(device, physicalDevice, m_memAllocator, queueFamily);
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}
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//--------------------------------------------------------------------------------------------------
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// Called at each frame to update the camera matrix
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//
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void HelloVulkan::updateUniformBuffer()
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{
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const float aspectRatio = m_size.width / static_cast<float>(m_size.height);
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CameraMatrices ubo = {};
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ubo.view = CameraManip.getMatrix();
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ubo.proj = nvmath::perspectiveVK(CameraManip.getFov(), aspectRatio, 0.1f, 1000.0f);
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// ubo.proj[1][1] *= -1; // Inverting Y for Vulkan
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ubo.viewInverse = nvmath::invert(ubo.view);
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// #VKRay
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ubo.projInverse = nvmath::invert(ubo.proj);
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#if defined(ALLOC_DEDICATED)
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void* data = m_device.mapMemory(m_cameraMat.allocation, 0, sizeof(CameraMatrices));
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memcpy(data, &ubo, sizeof(ubo));
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m_device.unmapMemory(m_cameraMat.allocation);
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#elif defined(ALLOC_DMA)
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void* data = m_memAllocator.map(m_cameraMat.allocation);
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memcpy(data, &ubo, sizeof(ubo));
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m_memAllocator.unmap(m_cameraMat.allocation);
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#elif defined(ALLOC_VMA)
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void* data;
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vmaMapMemory(m_memAllocator, m_cameraMat.allocation, &data);
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memcpy(data, &ubo, sizeof(ubo));
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vmaUnmapMemory(m_memAllocator, m_cameraMat.allocation);
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#endif
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}
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//--------------------------------------------------------------------------------------------------
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// Describing the layout pushed when rendering
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//
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void HelloVulkan::createDescriptorSetLayout()
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{
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using vkDS = vk::DescriptorSetLayoutBinding;
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using vkDT = vk::DescriptorType;
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using vkSS = vk::ShaderStageFlagBits;
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uint32_t nbTxt = static_cast<uint32_t>(m_textures.size());
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uint32_t nbObj = static_cast<uint32_t>(m_objModel.size());
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// Camera matrices (binding = 0)
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m_descSetLayoutBind.emplace_back(
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vkDS(0, vkDT::eUniformBuffer, 1, vkSS::eVertex | vkSS::eRaygenKHR));
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// Materials (binding = 1)
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m_descSetLayoutBind.emplace_back(
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vkDS(1, vkDT::eStorageBuffer, nbObj + 1, // Adding Implicit mat too
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vkSS::eVertex | vkSS::eFragment | vkSS::eClosestHitKHR | vkSS::eAnyHitKHR));
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// Scene description (binding = 2)
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m_descSetLayoutBind.emplace_back( //
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vkDS(2, vkDT::eStorageBuffer, 1,
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vkSS::eVertex | vkSS::eFragment | vkSS::eClosestHitKHR | vkSS::eAnyHitKHR));
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// Textures (binding = 3)
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m_descSetLayoutBind.emplace_back(
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vkDS(3, vkDT::eCombinedImageSampler, nbTxt, vkSS::eFragment | vkSS::eClosestHitKHR));
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// Materials (binding = 4)
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m_descSetLayoutBind.emplace_back(vkDS(4, vkDT::eStorageBuffer, nbObj,
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vkSS::eFragment | vkSS::eClosestHitKHR | vkSS::eAnyHitKHR));
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// Storing vertices (binding = 5)
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m_descSetLayoutBind.emplace_back( //
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vkDS(5, vkDT::eStorageBuffer, nbObj, vkSS::eClosestHitKHR | vkSS::eAnyHitKHR));
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// Storing indices (binding = 6)
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m_descSetLayoutBind.emplace_back( //
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vkDS(6, vkDT::eStorageBuffer, nbObj, vkSS::eClosestHitKHR | vkSS::eAnyHitKHR));
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// Storing implicit obj (binding = 7)
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m_descSetLayoutBind.emplace_back( //
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vkDS(7, vkDT::eStorageBuffer, 1,
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vkSS::eClosestHitKHR | vkSS::eIntersectionKHR | vkSS::eAnyHitKHR));
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m_descSetLayout = nvvkpp::util::createDescriptorSetLayout(m_device, m_descSetLayoutBind);
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m_descPool = nvvkpp::util::createDescriptorPool(m_device, m_descSetLayoutBind, 1);
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m_descSet = nvvkpp::util::createDescriptorSet(m_device, m_descPool, m_descSetLayout);
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}
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//--------------------------------------------------------------------------------------------------
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// Setting up the buffers in the descriptor set
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//
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void HelloVulkan::updateDescriptorSet()
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{
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std::vector<vk::WriteDescriptorSet> writes;
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// Camera matrices and scene description
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vk::DescriptorBufferInfo dbiUnif{m_cameraMat.buffer, 0, VK_WHOLE_SIZE};
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writes.emplace_back(nvvkpp::util::createWrite(m_descSet, m_descSetLayoutBind[0], &dbiUnif));
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vk::DescriptorBufferInfo dbiSceneDesc{m_sceneDesc.buffer, 0, VK_WHOLE_SIZE};
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writes.emplace_back(nvvkpp::util::createWrite(m_descSet, m_descSetLayoutBind[2], &dbiSceneDesc));
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// All material buffers, 1 buffer per OBJ
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std::vector<vk::DescriptorBufferInfo> dbiMat;
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std::vector<vk::DescriptorBufferInfo> dbiMatIdx;
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std::vector<vk::DescriptorBufferInfo> dbiVert;
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std::vector<vk::DescriptorBufferInfo> dbiIdx;
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for(auto& model : m_objModel)
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{
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dbiMat.emplace_back(model.matColorBuffer.buffer, 0, VK_WHOLE_SIZE);
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dbiMatIdx.emplace_back(model.matIndexBuffer.buffer, 0, VK_WHOLE_SIZE);
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dbiVert.emplace_back(model.vertexBuffer.buffer, 0, VK_WHOLE_SIZE);
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dbiIdx.emplace_back(model.indexBuffer.buffer, 0, VK_WHOLE_SIZE);
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}
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dbiMat.emplace_back(m_implObjects.implMatBuf.buffer, 0, VK_WHOLE_SIZE); // Adding implicit mat
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writes.emplace_back(nvvkpp::util::createWrite(m_descSet, m_descSetLayoutBind[1], dbiMat.data()));
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writes.emplace_back(
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nvvkpp::util::createWrite(m_descSet, m_descSetLayoutBind[4], dbiMatIdx.data()));
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writes.emplace_back(nvvkpp::util::createWrite(m_descSet, m_descSetLayoutBind[5], dbiVert.data()));
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writes.emplace_back(nvvkpp::util::createWrite(m_descSet, m_descSetLayoutBind[6], dbiIdx.data()));
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// All texture samplers
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std::vector<vk::DescriptorImageInfo> diit;
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for(auto& texture : m_textures)
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{
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diit.push_back(texture.descriptor);
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}
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writes.emplace_back(nvvkpp::util::createWrite(m_descSet, m_descSetLayoutBind[3], diit.data()));
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vk::DescriptorBufferInfo dbiImplDesc{m_implObjects.implBuf.buffer, 0, VK_WHOLE_SIZE};
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writes.emplace_back(nvvkpp::util::createWrite(m_descSet, m_descSetLayoutBind[7], &dbiImplDesc));
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// Writing the information
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m_device.updateDescriptorSets(static_cast<uint32_t>(writes.size()), writes.data(), 0, nullptr);
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}
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//--------------------------------------------------------------------------------------------------
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// Creating the pipeline layout
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//
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void HelloVulkan::createGraphicsPipeline()
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{
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using vkSS = vk::ShaderStageFlagBits;
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vk::PushConstantRange pushConstantRanges = {vkSS::eVertex | vkSS::eFragment, 0,
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sizeof(ObjPushConstants)};
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// Creating the Pipeline Layout
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vk::PipelineLayoutCreateInfo pipelineLayoutCreateInfo;
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vk::DescriptorSetLayout descSetLayout(m_descSetLayout);
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pipelineLayoutCreateInfo.setSetLayoutCount(1);
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pipelineLayoutCreateInfo.setPSetLayouts(&descSetLayout);
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pipelineLayoutCreateInfo.setPushConstantRangeCount(1);
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pipelineLayoutCreateInfo.setPPushConstantRanges(&pushConstantRanges);
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m_pipelineLayout = m_device.createPipelineLayout(pipelineLayoutCreateInfo);
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// Creating the Pipeline
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std::vector<std::string> paths = defaultSearchPaths;
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nvvkpp::GraphicsPipelineGenerator gpb(m_device, m_pipelineLayout, m_offscreen.renderPass());
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gpb.depthStencilState = {true};
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gpb.addShader(nvh::loadFile("shaders/vert_shader.vert.spv", true, paths), vkSS::eVertex);
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gpb.addShader(nvh::loadFile("shaders/frag_shader.frag.spv", true, paths), vkSS::eFragment);
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gpb.vertexInputState.bindingDescriptions = {{0, sizeof(VertexObj)}};
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gpb.vertexInputState.attributeDescriptions = {
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{0, 0, vk::Format::eR32G32B32Sfloat, offsetof(VertexObj, pos)},
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{1, 0, vk::Format::eR32G32B32Sfloat, offsetof(VertexObj, nrm)},
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{2, 0, vk::Format::eR32G32B32Sfloat, offsetof(VertexObj, color)},
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{3, 0, vk::Format::eR32G32Sfloat, offsetof(VertexObj, texCoord)}};
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m_graphicsPipeline = gpb.create();
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m_debug.setObjectName(m_graphicsPipeline, "Graphics");
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}
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//--------------------------------------------------------------------------------------------------
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// Loading the OBJ file and setting up all buffers
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//
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void HelloVulkan::loadModel(const std::string& filename, nvmath::mat4f transform)
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{
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using vkBU = vk::BufferUsageFlagBits;
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ObjLoader loader;
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loader.loadModel(filename);
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// Converting from Srgb to linear
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for(auto& m : loader.m_materials)
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{
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m.ambient = nvmath::pow(m.ambient, 2.2f);
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m.diffuse = nvmath::pow(m.diffuse, 2.2f);
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m.specular = nvmath::pow(m.specular, 2.2f);
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}
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ObjInstance instance;
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instance.objIndex = static_cast<uint32_t>(m_objModel.size());
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instance.transform = transform;
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instance.transformIT = nvmath::transpose(nvmath::invert(transform));
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instance.txtOffset = static_cast<uint32_t>(m_textures.size());
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ObjModel model;
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model.nbIndices = static_cast<uint32_t>(loader.m_indices.size());
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model.nbVertices = static_cast<uint32_t>(loader.m_vertices.size());
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// Create the buffers on Device and copy vertices, indices and materials
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nvvkpp::SingleCommandBuffer cmdBufGet(m_device, m_graphicsQueueIndex);
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vk::CommandBuffer cmdBuf = cmdBufGet.createCommandBuffer();
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model.vertexBuffer =
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m_alloc.createBuffer(cmdBuf, loader.m_vertices,
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vkBU::eVertexBuffer | vkBU::eStorageBuffer | vkBU::eShaderDeviceAddress);
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model.indexBuffer =
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m_alloc.createBuffer(cmdBuf, loader.m_indices,
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vkBU::eIndexBuffer | vkBU::eStorageBuffer | vkBU::eShaderDeviceAddress);
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model.matColorBuffer = m_alloc.createBuffer(cmdBuf, loader.m_materials, vkBU::eStorageBuffer);
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model.matIndexBuffer = m_alloc.createBuffer(cmdBuf, loader.m_matIndx, vkBU::eStorageBuffer);
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// Creates all textures found
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createTextureImages(cmdBuf, loader.m_textures);
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cmdBufGet.flushCommandBuffer(cmdBuf);
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m_alloc.flushStaging();
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std::string objNb = std::to_string(instance.objIndex);
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m_debug.setObjectName(model.vertexBuffer.buffer, (std::string("vertex_" + objNb).c_str()));
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m_debug.setObjectName(model.indexBuffer.buffer, (std::string("index_" + objNb).c_str()));
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m_debug.setObjectName(model.matColorBuffer.buffer, (std::string("mat_" + objNb).c_str()));
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m_debug.setObjectName(model.matIndexBuffer.buffer, (std::string("matIdx_" + objNb).c_str()));
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m_objModel.emplace_back(model);
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m_objInstance.emplace_back(instance);
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}
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//--------------------------------------------------------------------------------------------------
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// Creating the uniform buffer holding the camera matrices
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// - Buffer is host visible
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//
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void HelloVulkan::createUniformBuffer()
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{
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using vkBU = vk::BufferUsageFlagBits;
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using vkMP = vk::MemoryPropertyFlagBits;
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m_cameraMat = m_alloc.createBuffer(sizeof(CameraMatrices), vkBU::eUniformBuffer,
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vkMP::eHostVisible | vkMP::eHostCoherent);
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m_debug.setObjectName(m_cameraMat.buffer, "cameraMat");
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}
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//--------------------------------------------------------------------------------------------------
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// Create a storage buffer containing the description of the scene elements
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// - Which geometry is used by which instance
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// - Transformation
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// - Offset for texture
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//
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void HelloVulkan::createSceneDescriptionBuffer()
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{
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using vkBU = vk::BufferUsageFlagBits;
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nvvkpp::SingleCommandBuffer cmdGen(m_device, m_graphicsQueueIndex);
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auto cmdBuf = cmdGen.createCommandBuffer();
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m_sceneDesc = m_alloc.createBuffer(cmdBuf, m_objInstance, vkBU::eStorageBuffer);
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cmdGen.flushCommandBuffer(cmdBuf);
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m_alloc.flushStaging();
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m_debug.setObjectName(m_sceneDesc.buffer, "sceneDesc");
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}
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//--------------------------------------------------------------------------------------------------
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// Creating all textures and samplers
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//
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void HelloVulkan::createTextureImages(const vk::CommandBuffer& cmdBuf,
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const std::vector<std::string>& textures)
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{
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using vkIU = vk::ImageUsageFlagBits;
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vk::SamplerCreateInfo samplerCreateInfo{
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{}, vk::Filter::eLinear, vk::Filter::eLinear, vk::SamplerMipmapMode::eLinear};
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samplerCreateInfo.setMaxLod(FLT_MAX);
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vk::Format format = vk::Format::eR8G8B8A8Srgb;
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// If no textures are present, create a dummy one to accommodate the pipeline layout
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if(textures.empty() && m_textures.empty())
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{
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nvvkTexture texture;
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std::array<uint8_t, 4> color{255u, 255u, 255u, 255u};
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vk::DeviceSize bufferSize = sizeof(color);
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auto imgSize = vk::Extent2D(1, 1);
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auto imageCreateInfo = nvvkpp::image::create2DInfo(imgSize, format);
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// Creating the VKImage
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texture = m_alloc.createImage(cmdBuf, bufferSize, color.data(), imageCreateInfo);
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// Setting up the descriptor used by the shader
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texture.descriptor =
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nvvkpp::image::create2DDescriptor(m_device, texture.image, samplerCreateInfo, format);
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// The image format must be in VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL
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nvvkpp::image::setImageLayout(cmdBuf, texture.image, vk::ImageLayout::eUndefined,
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vk::ImageLayout::eShaderReadOnlyOptimal);
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m_textures.push_back(texture);
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}
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else
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{
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// Uploading all images
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for(const auto& texture : textures)
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{
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std::stringstream o;
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int texWidth, texHeight, texChannels;
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o << "media/textures/" << texture;
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std::string txtFile = nvh::findFile(o.str(), defaultSearchPaths);
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stbi_uc* pixels =
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stbi_load(txtFile.c_str(), &texWidth, &texHeight, &texChannels, STBI_rgb_alpha);
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// Handle failure
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if(!pixels)
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{
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texWidth = texHeight = 1;
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texChannels = 4;
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std::array<uint8_t, 4> color{255u, 0u, 255u, 255u};
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||||
pixels = reinterpret_cast<stbi_uc*>(color.data());
|
||||
}
|
||||
|
||||
vk::DeviceSize bufferSize = static_cast<uint64_t>(texWidth) * texHeight * sizeof(uint8_t) * 4;
|
||||
auto imgSize = vk::Extent2D(texWidth, texHeight);
|
||||
auto imageCreateInfo = nvvkpp::image::create2DInfo(imgSize, format, vkIU::eSampled, true);
|
||||
|
||||
{
|
||||
nvvkTexture texture;
|
||||
texture = m_alloc.createImage(cmdBuf, bufferSize, pixels, imageCreateInfo);
|
||||
|
||||
nvvkpp::image::generateMipmaps(cmdBuf, texture.image, format, imgSize,
|
||||
imageCreateInfo.mipLevels);
|
||||
texture.descriptor =
|
||||
nvvkpp::image::create2DDescriptor(m_device, texture.image, samplerCreateInfo, format);
|
||||
m_textures.push_back(texture);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
//--------------------------------------------------------------------------------------------------
|
||||
// Destroying all allocations
|
||||
//
|
||||
void HelloVulkan::destroyResources()
|
||||
{
|
||||
m_device.destroy(m_graphicsPipeline);
|
||||
m_device.destroy(m_pipelineLayout);
|
||||
m_device.destroy(m_descPool);
|
||||
m_device.destroy(m_descSetLayout);
|
||||
m_alloc.destroy(m_cameraMat);
|
||||
m_alloc.destroy(m_sceneDesc);
|
||||
m_alloc.destroy(m_implObjects.implBuf);
|
||||
m_alloc.destroy(m_implObjects.implMatBuf);
|
||||
|
||||
for(auto& m : m_objModel)
|
||||
{
|
||||
m_alloc.destroy(m.vertexBuffer);
|
||||
m_alloc.destroy(m.indexBuffer);
|
||||
m_alloc.destroy(m.matColorBuffer);
|
||||
m_alloc.destroy(m.matIndexBuffer);
|
||||
}
|
||||
|
||||
for(auto& t : m_textures)
|
||||
{
|
||||
m_alloc.destroy(t);
|
||||
}
|
||||
|
||||
//#Post
|
||||
m_offscreen.destroy();
|
||||
|
||||
// #VKRay
|
||||
m_raytrace.destroy();
|
||||
|
||||
m_memAllocator.deinit();
|
||||
}
|
||||
|
||||
//--------------------------------------------------------------------------------------------------
|
||||
// Drawing the scene in raster mode
|
||||
//
|
||||
void HelloVulkan::rasterize(const vk::CommandBuffer& cmdBuf)
|
||||
{
|
||||
using vkPBP = vk::PipelineBindPoint;
|
||||
using vkSS = vk::ShaderStageFlagBits;
|
||||
vk::DeviceSize offset{0};
|
||||
|
||||
m_debug.beginLabel(cmdBuf, "Rasterize");
|
||||
|
||||
// Dynamic Viewport
|
||||
cmdBuf.setViewport(0, {vk::Viewport(0, 0, (float)m_size.width, (float)m_size.height, 0, 1)});
|
||||
cmdBuf.setScissor(0, {{{0, 0}, {m_size.width, m_size.height}}});
|
||||
|
||||
// Drawing all triangles
|
||||
cmdBuf.bindPipeline(vkPBP::eGraphics, m_graphicsPipeline);
|
||||
cmdBuf.bindDescriptorSets(vkPBP::eGraphics, m_pipelineLayout, 0, {m_descSet}, {});
|
||||
for(int i = 0; i < m_objInstance.size(); ++i)
|
||||
{
|
||||
auto& inst = m_objInstance[i];
|
||||
auto& model = m_objModel[inst.objIndex];
|
||||
m_pushConstants.instanceId = i; // Telling which instance is drawn
|
||||
cmdBuf.pushConstants<ObjPushConstants>(m_pipelineLayout, vkSS::eVertex | vkSS::eFragment, 0,
|
||||
m_pushConstants);
|
||||
|
||||
cmdBuf.bindVertexBuffers(0, 1, &model.vertexBuffer.buffer, &offset);
|
||||
cmdBuf.bindIndexBuffer(model.indexBuffer.buffer, 0, vk::IndexType::eUint32);
|
||||
cmdBuf.drawIndexed(model.nbIndices, 1, 0, 0, 0);
|
||||
}
|
||||
m_debug.endLabel(cmdBuf);
|
||||
}
|
||||
|
||||
//--------------------------------------------------------------------------------------------------
|
||||
// Handling resize of the window
|
||||
//
|
||||
void HelloVulkan::onResize(int /*w*/, int /*h*/)
|
||||
{
|
||||
m_offscreen.createFramebuffer(m_size);
|
||||
m_offscreen.updateDescriptorSet();
|
||||
m_raytrace.updateRtDescriptorSet(m_offscreen.colorTexture().descriptor.imageView);
|
||||
}
|
||||
|
||||
//--------------------------------------------------------------------------------------------------
|
||||
// Initialize offscreen rendering
|
||||
//
|
||||
void HelloVulkan::initOffscreen()
|
||||
{
|
||||
m_offscreen.createFramebuffer(m_size);
|
||||
m_offscreen.createDescriptor();
|
||||
m_offscreen.createPipeline(m_renderPass);
|
||||
m_offscreen.updateDescriptorSet();
|
||||
}
|
||||
|
||||
//--------------------------------------------------------------------------------------------------
|
||||
// Initialize Vulkan ray tracing
|
||||
//
|
||||
void HelloVulkan::initRayTracing()
|
||||
{
|
||||
m_raytrace.createBottomLevelAS(m_objModel, m_implObjects);
|
||||
m_raytrace.createTopLevelAS(m_objInstance, m_implObjects);
|
||||
m_raytrace.createRtDescriptorSet(m_offscreen.colorTexture().descriptor.imageView);
|
||||
m_raytrace.createRtPipeline(m_descSetLayout);
|
||||
m_raytrace.createRtShaderBindingTable();
|
||||
}
|
||||
|
||||
//--------------------------------------------------------------------------------------------------
|
||||
// Ray trace the scene
|
||||
//
|
||||
void HelloVulkan::raytrace(const vk::CommandBuffer& cmdBuf, const nvmath::vec4f& clearColor)
|
||||
{
|
||||
updateFrame();
|
||||
if(m_pushConstants.frame >= m_maxFrames)
|
||||
return;
|
||||
|
||||
m_raytrace.raytrace(cmdBuf, clearColor, m_descSet, m_size, m_pushConstants);
|
||||
}
|
||||
|
||||
//--------------------------------------------------------------------------------------------------
|
||||
// If the camera matrix has changed, resets the frame.
|
||||
// otherwise, increments frame.
|
||||
//
|
||||
void HelloVulkan::updateFrame()
|
||||
{
|
||||
static nvmath::mat4f refCamMatrix;
|
||||
|
||||
auto& m = CameraManip.getMatrix();
|
||||
if(memcmp(&refCamMatrix.a00, &m.a00, sizeof(nvmath::mat4f)) != 0)
|
||||
{
|
||||
resetFrame();
|
||||
refCamMatrix = m;
|
||||
}
|
||||
m_pushConstants.frame++;
|
||||
}
|
||||
|
||||
void HelloVulkan::resetFrame()
|
||||
{
|
||||
m_pushConstants.frame = -1;
|
||||
}
|
||||
|
||||
|
||||
void HelloVulkan::addImplSphere(nvmath::vec3f center, float radius, int matId)
|
||||
{
|
||||
ObjImplicit impl;
|
||||
impl.minimum = center - radius;
|
||||
impl.maximum = center + radius;
|
||||
impl.objType = EObjType::eSphere;
|
||||
impl.matId = matId;
|
||||
m_implObjects.objImpl.push_back(impl);
|
||||
}
|
||||
|
||||
void HelloVulkan::addImplCube(nvmath::vec3f minumum, nvmath::vec3f maximum, int matId)
|
||||
{
|
||||
ObjImplicit impl;
|
||||
impl.minimum = minumum;
|
||||
impl.maximum = maximum;
|
||||
impl.objType = EObjType::eCube;
|
||||
impl.matId = matId;
|
||||
m_implObjects.objImpl.push_back(impl);
|
||||
}
|
||||
|
||||
void HelloVulkan::addImplMaterial(const MaterialObj& mat)
|
||||
{
|
||||
m_implObjects.implMat.push_back(mat);
|
||||
}
|
||||
|
||||
//--------------------------------------------------------------------------------------------------
|
||||
// Create a storage buffer containing the description of the scene elements
|
||||
// - Which geometry is used by which instance
|
||||
// - Transformation
|
||||
// - Offset for texture
|
||||
//
|
||||
void HelloVulkan::createImplictBuffers()
|
||||
{
|
||||
using vkBU = vk::BufferUsageFlagBits;
|
||||
nvvkpp::SingleCommandBuffer cmdGen(m_device, m_graphicsQueueIndex);
|
||||
|
||||
// Not allowing empty buffers
|
||||
if(m_implObjects.objImpl.empty())
|
||||
m_implObjects.objImpl.push_back({});
|
||||
if(m_implObjects.implMat.empty())
|
||||
m_implObjects.implMat.push_back({});
|
||||
|
||||
auto cmdBuf = cmdGen.createCommandBuffer();
|
||||
m_implObjects.implBuf = m_alloc.createBuffer(cmdBuf, m_implObjects.objImpl,
|
||||
vkBU::eStorageBuffer | vkBU::eShaderDeviceAddress);
|
||||
m_implObjects.implMatBuf =
|
||||
m_alloc.createBuffer(cmdBuf, m_implObjects.implMat, vkBU::eStorageBuffer);
|
||||
cmdGen.flushCommandBuffer(cmdBuf);
|
||||
m_alloc.flushStaging();
|
||||
m_debug.setObjectName(m_implObjects.implBuf.buffer, "implicitObj");
|
||||
m_debug.setObjectName(m_implObjects.implMatBuf.buffer, "implicitMat");
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue