1248 lines
No EOL
44 KiB
C++
1248 lines
No EOL
44 KiB
C++
/*
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* Vulkan glTF model and texture loading class based on tinyglTF (https://github.com/syoyo/tinygltf)
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*
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* Copyright (C) 2018 by Sascha Willems - www.saschawillems.de
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*
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* This code is licensed under the MIT license (MIT) (http://opensource.org/licenses/MIT)
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*/
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#pragma once
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#include <stdlib.h>
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#include <string>
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#include <fstream>
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#include <vector>
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#include "vulkan/vulkan.h"
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#include "VulkanDevice.hpp"
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#define GLM_FORCE_RADIANS
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#define GLM_FORCE_DEPTH_ZERO_TO_ONE
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#include <glm/glm.hpp>
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#include <glm/gtc/matrix_transform.hpp>
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#include <glm/gtc/type_ptr.hpp>
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#include <gli/gli.hpp>
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#define TINYGLTF_IMPLEMENTATION
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#define STB_IMAGE_IMPLEMENTATION
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#define TINYGLTF_NO_STB_IMAGE_WRITE
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#include "tiny_gltf.h"
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#if defined(__ANDROID__)
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#include <android/asset_manager.h>
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#endif
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namespace vkglTF
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{
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struct Node;
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/*
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glTF texture loading class
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*/
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struct Texture {
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vks::VulkanDevice *device;
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VkImage image;
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VkImageLayout imageLayout;
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VkDeviceMemory deviceMemory;
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VkImageView view;
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uint32_t width, height;
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uint32_t mipLevels;
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uint32_t layerCount;
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VkDescriptorImageInfo descriptor;
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VkSampler sampler;
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void updateDescriptor()
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{
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descriptor.sampler = sampler;
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descriptor.imageView = view;
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descriptor.imageLayout = imageLayout;
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}
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void destroy()
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{
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vkDestroyImageView(device->logicalDevice, view, nullptr);
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vkDestroyImage(device->logicalDevice, image, nullptr);
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vkFreeMemory(device->logicalDevice, deviceMemory, nullptr);
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vkDestroySampler(device->logicalDevice, sampler, nullptr);
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}
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/*
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Load a texture from a glTF image (stored as vector of chars loaded via stb_image)
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Also generates the mip chain as glTF images are stored as jpg or png without any mips
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*/
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void fromglTfImage(tinygltf::Image &gltfimage, vks::VulkanDevice *device, VkQueue copyQueue)
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{
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this->device = device;
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unsigned char* buffer = nullptr;
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VkDeviceSize bufferSize = 0;
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bool deleteBuffer = false;
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if (gltfimage.component == 3) {
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// Most devices don't support RGB only on Vulkan so convert if necessary
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// TODO: Check actual format support and transform only if required
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bufferSize = gltfimage.width * gltfimage.height * 4;
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buffer = new unsigned char[bufferSize];
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unsigned char* rgba = buffer;
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unsigned char* rgb = &gltfimage.image[0];
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for (size_t i = 0; i< gltfimage.width * gltfimage.height; ++i) {
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for (int32_t j = 0; j < 3; ++j) {
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rgba[j] = rgb[j];
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}
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rgba += 4;
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rgb += 3;
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}
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deleteBuffer = true;
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}
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else {
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buffer = &gltfimage.image[0];
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bufferSize = gltfimage.image.size();
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}
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VkFormat format = VK_FORMAT_R8G8B8A8_UNORM;
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VkFormatProperties formatProperties;
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width = gltfimage.width;
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height = gltfimage.height;
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mipLevels = static_cast<uint32_t>(floor(log2(std::max(width, height))) + 1.0);
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vkGetPhysicalDeviceFormatProperties(device->physicalDevice, format, &formatProperties);
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assert(formatProperties.optimalTilingFeatures & VK_FORMAT_FEATURE_BLIT_SRC_BIT);
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assert(formatProperties.optimalTilingFeatures & VK_FORMAT_FEATURE_BLIT_DST_BIT);
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VkMemoryAllocateInfo memAllocInfo{};
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memAllocInfo.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
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VkMemoryRequirements memReqs{};
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VkBuffer stagingBuffer;
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VkDeviceMemory stagingMemory;
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VkBufferCreateInfo bufferCreateInfo{};
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bufferCreateInfo.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
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bufferCreateInfo.size = bufferSize;
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bufferCreateInfo.usage = VK_BUFFER_USAGE_TRANSFER_SRC_BIT;
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bufferCreateInfo.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
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VK_CHECK_RESULT(vkCreateBuffer(device->logicalDevice, &bufferCreateInfo, nullptr, &stagingBuffer));
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vkGetBufferMemoryRequirements(device->logicalDevice, stagingBuffer, &memReqs);
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memAllocInfo.allocationSize = memReqs.size;
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memAllocInfo.memoryTypeIndex = device->getMemoryType(memReqs.memoryTypeBits, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT);
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VK_CHECK_RESULT(vkAllocateMemory(device->logicalDevice, &memAllocInfo, nullptr, &stagingMemory));
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VK_CHECK_RESULT(vkBindBufferMemory(device->logicalDevice, stagingBuffer, stagingMemory, 0));
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uint8_t *data;
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VK_CHECK_RESULT(vkMapMemory(device->logicalDevice, stagingMemory, 0, memReqs.size, 0, (void **)&data));
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memcpy(data, buffer, bufferSize);
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vkUnmapMemory(device->logicalDevice, stagingMemory);
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VkImageCreateInfo imageCreateInfo{};
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imageCreateInfo.sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO;
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imageCreateInfo.imageType = VK_IMAGE_TYPE_2D;
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imageCreateInfo.format = format;
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imageCreateInfo.mipLevels = mipLevels;
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imageCreateInfo.arrayLayers = 1;
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imageCreateInfo.samples = VK_SAMPLE_COUNT_1_BIT;
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imageCreateInfo.tiling = VK_IMAGE_TILING_OPTIMAL;
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imageCreateInfo.usage = VK_IMAGE_USAGE_SAMPLED_BIT;
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imageCreateInfo.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
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imageCreateInfo.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
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imageCreateInfo.extent = { width, height, 1 };
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imageCreateInfo.usage = VK_IMAGE_USAGE_TRANSFER_DST_BIT | VK_IMAGE_USAGE_TRANSFER_SRC_BIT | VK_IMAGE_USAGE_SAMPLED_BIT;
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VK_CHECK_RESULT(vkCreateImage(device->logicalDevice, &imageCreateInfo, nullptr, &image));
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vkGetImageMemoryRequirements(device->logicalDevice, image, &memReqs);
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memAllocInfo.allocationSize = memReqs.size;
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memAllocInfo.memoryTypeIndex = device->getMemoryType(memReqs.memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);
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VK_CHECK_RESULT(vkAllocateMemory(device->logicalDevice, &memAllocInfo, nullptr, &deviceMemory));
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VK_CHECK_RESULT(vkBindImageMemory(device->logicalDevice, image, deviceMemory, 0));
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VkCommandBuffer copyCmd = device->createCommandBuffer(VK_COMMAND_BUFFER_LEVEL_PRIMARY, true);
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VkImageSubresourceRange subresourceRange = {};
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subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
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subresourceRange.levelCount = 1;
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subresourceRange.layerCount = 1;
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{
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VkImageMemoryBarrier imageMemoryBarrier{};
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imageMemoryBarrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
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imageMemoryBarrier.oldLayout = VK_IMAGE_LAYOUT_UNDEFINED;
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imageMemoryBarrier.newLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL;
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imageMemoryBarrier.srcAccessMask = 0;
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imageMemoryBarrier.dstAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
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imageMemoryBarrier.image = image;
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imageMemoryBarrier.subresourceRange = subresourceRange;
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vkCmdPipelineBarrier(copyCmd, VK_PIPELINE_STAGE_ALL_COMMANDS_BIT, VK_PIPELINE_STAGE_ALL_COMMANDS_BIT, 0, 0, nullptr, 0, nullptr, 1, &imageMemoryBarrier);
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}
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VkBufferImageCopy bufferCopyRegion = {};
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bufferCopyRegion.imageSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
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bufferCopyRegion.imageSubresource.mipLevel = 0;
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bufferCopyRegion.imageSubresource.baseArrayLayer = 0;
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bufferCopyRegion.imageSubresource.layerCount = 1;
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bufferCopyRegion.imageExtent.width = width;
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bufferCopyRegion.imageExtent.height = height;
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bufferCopyRegion.imageExtent.depth = 1;
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vkCmdCopyBufferToImage(copyCmd, stagingBuffer, image, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, 1, &bufferCopyRegion);
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{
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VkImageMemoryBarrier imageMemoryBarrier{};
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imageMemoryBarrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
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imageMemoryBarrier.oldLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL;
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imageMemoryBarrier.newLayout = VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL;
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imageMemoryBarrier.srcAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
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imageMemoryBarrier.dstAccessMask = VK_ACCESS_TRANSFER_READ_BIT;
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imageMemoryBarrier.image = image;
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imageMemoryBarrier.subresourceRange = subresourceRange;
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vkCmdPipelineBarrier(copyCmd, VK_PIPELINE_STAGE_ALL_COMMANDS_BIT, VK_PIPELINE_STAGE_ALL_COMMANDS_BIT, 0, 0, nullptr, 0, nullptr, 1, &imageMemoryBarrier);
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}
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device->flushCommandBuffer(copyCmd, copyQueue, true);
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vkFreeMemory(device->logicalDevice, stagingMemory, nullptr);
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vkDestroyBuffer(device->logicalDevice, stagingBuffer, nullptr);
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// Generate the mip chain (glTF uses jpg and png, so we need to create this manually)
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VkCommandBuffer blitCmd = device->createCommandBuffer(VK_COMMAND_BUFFER_LEVEL_PRIMARY, true);
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for (uint32_t i = 1; i < mipLevels; i++) {
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VkImageBlit imageBlit{};
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imageBlit.srcSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
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imageBlit.srcSubresource.layerCount = 1;
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imageBlit.srcSubresource.mipLevel = i - 1;
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imageBlit.srcOffsets[1].x = int32_t(width >> (i - 1));
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imageBlit.srcOffsets[1].y = int32_t(height >> (i - 1));
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imageBlit.srcOffsets[1].z = 1;
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imageBlit.dstSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
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imageBlit.dstSubresource.layerCount = 1;
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imageBlit.dstSubresource.mipLevel = i;
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imageBlit.dstOffsets[1].x = int32_t(width >> i);
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imageBlit.dstOffsets[1].y = int32_t(height >> i);
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imageBlit.dstOffsets[1].z = 1;
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VkImageSubresourceRange mipSubRange = {};
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mipSubRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
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mipSubRange.baseMipLevel = i;
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mipSubRange.levelCount = 1;
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mipSubRange.layerCount = 1;
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{
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VkImageMemoryBarrier imageMemoryBarrier{};
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imageMemoryBarrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
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imageMemoryBarrier.oldLayout = VK_IMAGE_LAYOUT_UNDEFINED;
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imageMemoryBarrier.newLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL;
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imageMemoryBarrier.srcAccessMask = 0;
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imageMemoryBarrier.dstAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
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imageMemoryBarrier.image = image;
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imageMemoryBarrier.subresourceRange = mipSubRange;
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vkCmdPipelineBarrier(blitCmd, VK_PIPELINE_STAGE_TRANSFER_BIT, VK_PIPELINE_STAGE_TRANSFER_BIT, 0, 0, nullptr, 0, nullptr, 1, &imageMemoryBarrier);
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}
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vkCmdBlitImage(blitCmd, image, VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL, image, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, 1, &imageBlit, VK_FILTER_LINEAR);
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{
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VkImageMemoryBarrier imageMemoryBarrier{};
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imageMemoryBarrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
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imageMemoryBarrier.oldLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL;
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imageMemoryBarrier.newLayout = VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL;
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imageMemoryBarrier.srcAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
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imageMemoryBarrier.dstAccessMask = VK_ACCESS_TRANSFER_READ_BIT;
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imageMemoryBarrier.image = image;
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imageMemoryBarrier.subresourceRange = mipSubRange;
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vkCmdPipelineBarrier(blitCmd, VK_PIPELINE_STAGE_TRANSFER_BIT, VK_PIPELINE_STAGE_TRANSFER_BIT, 0, 0, nullptr, 0, nullptr, 1, &imageMemoryBarrier);
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}
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}
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subresourceRange.levelCount = mipLevels;
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imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
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{
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VkImageMemoryBarrier imageMemoryBarrier{};
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imageMemoryBarrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
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imageMemoryBarrier.oldLayout = VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL;
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imageMemoryBarrier.newLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
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imageMemoryBarrier.srcAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
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imageMemoryBarrier.dstAccessMask = VK_ACCESS_TRANSFER_READ_BIT;
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imageMemoryBarrier.image = image;
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imageMemoryBarrier.subresourceRange = subresourceRange;
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vkCmdPipelineBarrier(blitCmd, VK_PIPELINE_STAGE_ALL_COMMANDS_BIT, VK_PIPELINE_STAGE_ALL_COMMANDS_BIT, 0, 0, nullptr, 0, nullptr, 1, &imageMemoryBarrier);
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}
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device->flushCommandBuffer(blitCmd, copyQueue, true);
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VkSamplerCreateInfo samplerInfo{};
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samplerInfo.sType = VK_STRUCTURE_TYPE_SAMPLER_CREATE_INFO;
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samplerInfo.magFilter = VK_FILTER_LINEAR;
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samplerInfo.minFilter = VK_FILTER_LINEAR;
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samplerInfo.mipmapMode = VK_SAMPLER_MIPMAP_MODE_LINEAR;
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samplerInfo.addressModeU = VK_SAMPLER_ADDRESS_MODE_MIRRORED_REPEAT;
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samplerInfo.addressModeV = VK_SAMPLER_ADDRESS_MODE_MIRRORED_REPEAT;
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samplerInfo.addressModeW = VK_SAMPLER_ADDRESS_MODE_MIRRORED_REPEAT;
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samplerInfo.compareOp = VK_COMPARE_OP_NEVER;
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samplerInfo.borderColor = VK_BORDER_COLOR_FLOAT_OPAQUE_WHITE;
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samplerInfo.maxAnisotropy = 1.0;
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samplerInfo.anisotropyEnable = VK_FALSE;
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samplerInfo.maxLod = (float)mipLevels;
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samplerInfo.maxAnisotropy = 8.0f;
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samplerInfo.anisotropyEnable = VK_TRUE;
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VK_CHECK_RESULT(vkCreateSampler(device->logicalDevice, &samplerInfo, nullptr, &sampler));
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VkImageViewCreateInfo viewInfo{};
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viewInfo.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
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viewInfo.image = image;
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viewInfo.viewType = VK_IMAGE_VIEW_TYPE_2D;
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viewInfo.format = format;
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viewInfo.components = { VK_COMPONENT_SWIZZLE_R, VK_COMPONENT_SWIZZLE_G, VK_COMPONENT_SWIZZLE_B, VK_COMPONENT_SWIZZLE_A };
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viewInfo.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
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viewInfo.subresourceRange.layerCount = 1;
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viewInfo.subresourceRange.levelCount = mipLevels;
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VK_CHECK_RESULT(vkCreateImageView(device->logicalDevice, &viewInfo, nullptr, &view));
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descriptor.sampler = sampler;
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descriptor.imageView = view;
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descriptor.imageLayout = imageLayout;
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}
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};
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/*
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glTF material class
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*/
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// TODO: Base class and inheritance
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struct Material {
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enum AlphaMode{ ALPHAMODE_OPAQUE, ALPHAMODE_MASK, ALPHAMODE_BLEND };
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AlphaMode alphaMode = ALPHAMODE_OPAQUE;
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float alphaCutoff = 1.0f;
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float metallicFactor = 1.0f;
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float roughnessFactor = 1.0f;
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glm::vec4 baseColorFactor = glm::vec4(1.0f);
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vkglTF::Texture *baseColorTexture;
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vkglTF::Texture *metallicRoughnessTexture;
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vkglTF::Texture *normalTexture;
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vkglTF::Texture *occlusionTexture;
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vkglTF::Texture *emissiveTexture;
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vkglTF::Texture *specularGlossinessTexture;
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vkglTF::Texture *diffuseTexture;
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VkDescriptorSet descriptorSet = VK_NULL_HANDLE;
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};
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/*
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glTF primitive
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*/
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struct Primitive {
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uint32_t firstIndex;
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uint32_t indexCount;
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Material &material;
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struct Dimensions {
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glm::vec3 min = glm::vec3(FLT_MAX);
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glm::vec3 max = glm::vec3(-FLT_MAX);
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glm::vec3 size;
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glm::vec3 center;
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float radius;
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} dimensions;
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void setDimensions(glm::vec3 min, glm::vec3 max) {
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dimensions.min = min;
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dimensions.max = max;
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dimensions.size = max - min;
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dimensions.center = (min + max) / 2.0f;
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dimensions.radius = glm::distance(min, max) / 2.0f;
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}
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Primitive(uint32_t firstIndex, uint32_t indexCount, Material &material) : firstIndex(firstIndex), indexCount(indexCount), material(material) {};
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};
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/*
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glTF mesh
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*/
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struct Mesh {
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vks::VulkanDevice *device;
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std::vector<Primitive*> primitives;
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std::string name;
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struct UniformBuffer {
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VkBuffer buffer;
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VkDeviceMemory memory;
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VkDescriptorBufferInfo descriptor;
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VkDescriptorSet descriptorSet = VK_NULL_HANDLE;
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void *mapped;
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} uniformBuffer;
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struct UniformBlock {
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glm::mat4 matrix;
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glm::mat4 jointMatrix[64]{};
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float jointcount{ 0 };
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} uniformBlock;
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Mesh(vks::VulkanDevice *device, glm::mat4 matrix) {
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this->device = device;
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this->uniformBlock.matrix = matrix;
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VK_CHECK_RESULT(device->createBuffer(
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VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
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VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
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sizeof(uniformBlock),
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&uniformBuffer.buffer,
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&uniformBuffer.memory,
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&uniformBlock));
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VK_CHECK_RESULT(vkMapMemory(device->logicalDevice, uniformBuffer.memory, 0, sizeof(uniformBlock), 0, &uniformBuffer.mapped));
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uniformBuffer.descriptor = { uniformBuffer.buffer, 0, sizeof(uniformBlock) };
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};
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~Mesh() {
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vkDestroyBuffer(device->logicalDevice, uniformBuffer.buffer, nullptr);
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vkFreeMemory(device->logicalDevice, uniformBuffer.memory, nullptr);
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}
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};
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/*
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glTF skin
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*/
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struct Skin {
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std::string name;
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Node *skeletonRoot = nullptr;
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std::vector<glm::mat4> inverseBindMatrices;
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std::vector<Node*> joints;
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};
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/*
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glTF node
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*/
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struct Node {
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Node *parent;
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uint32_t index;
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std::vector<Node*> children;
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glm::mat4 matrix;
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std::string name;
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Mesh *mesh;
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Skin *skin;
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int32_t skinIndex = -1;
|
|
glm::vec3 translation{};
|
|
glm::vec3 scale{ 1.0f };
|
|
glm::quat rotation{};
|
|
|
|
glm::mat4 localMatrix() {
|
|
return glm::translate(glm::mat4(1.0f), translation) * glm::mat4(rotation) * glm::scale(glm::mat4(1.0f), scale) * matrix;
|
|
}
|
|
|
|
glm::mat4 getMatrix() {
|
|
glm::mat4 m = localMatrix();
|
|
vkglTF::Node *p = parent;
|
|
while (p) {
|
|
m = p->localMatrix() * m;
|
|
p = p->parent;
|
|
}
|
|
return m;
|
|
}
|
|
|
|
void update() {
|
|
if (mesh) {
|
|
glm::mat4 m = getMatrix();
|
|
if (skin) {
|
|
mesh->uniformBlock.matrix = m;
|
|
// Update join matrices
|
|
glm::mat4 inverseTransform = glm::inverse(m);
|
|
for (size_t i = 0; i < skin->joints.size(); i++) {
|
|
vkglTF::Node *jointNode = skin->joints[i];
|
|
glm::mat4 jointMat = jointNode->getMatrix() * skin->inverseBindMatrices[i];
|
|
jointMat = inverseTransform * jointMat;
|
|
mesh->uniformBlock.jointMatrix[i] = jointMat;
|
|
}
|
|
mesh->uniformBlock.jointcount = (float)skin->joints.size();
|
|
memcpy(mesh->uniformBuffer.mapped, &mesh->uniformBlock, sizeof(mesh->uniformBlock));
|
|
} else {
|
|
memcpy(mesh->uniformBuffer.mapped, &m, sizeof(glm::mat4));
|
|
}
|
|
}
|
|
|
|
for (auto& child : children) {
|
|
child->update();
|
|
}
|
|
}
|
|
|
|
~Node() {
|
|
if (mesh) {
|
|
delete mesh;
|
|
}
|
|
for (auto& child : children) {
|
|
delete child;
|
|
}
|
|
}
|
|
};
|
|
|
|
/*
|
|
glTF animation channel
|
|
*/
|
|
struct AnimationChannel {
|
|
enum PathType { TRANSLATION, ROTATION, SCALE };
|
|
PathType path;
|
|
Node *node;
|
|
uint32_t samplerIndex;
|
|
};
|
|
|
|
/*
|
|
glTF animation sampler
|
|
*/
|
|
struct AnimationSampler {
|
|
enum InterpolationType { LINEAR, STEP, CUBICSPLINE };
|
|
InterpolationType interpolation;
|
|
std::vector<float> inputs;
|
|
std::vector<glm::vec4> outputsVec4;
|
|
};
|
|
|
|
/*
|
|
glTF animation
|
|
*/
|
|
struct Animation {
|
|
std::string name;
|
|
std::vector<AnimationSampler> samplers;
|
|
std::vector<AnimationChannel> channels;
|
|
float start = std::numeric_limits<float>::max();
|
|
float end = std::numeric_limits<float>::min();
|
|
};
|
|
|
|
/*
|
|
glTF model loading and rendering class
|
|
*/
|
|
struct Model {
|
|
|
|
vks::VulkanDevice *device;
|
|
VkDescriptorPool descriptorPool;
|
|
VkDescriptorSetLayout descriptorSetLayout;
|
|
|
|
struct Vertex {
|
|
glm::vec3 pos;
|
|
glm::vec3 normal;
|
|
glm::vec2 uv;
|
|
glm::vec4 joint0;
|
|
glm::vec4 weight0;
|
|
};
|
|
|
|
struct Vertices {
|
|
VkBuffer buffer;
|
|
VkDeviceMemory memory;
|
|
} vertices;
|
|
struct Indices {
|
|
int count;
|
|
VkBuffer buffer;
|
|
VkDeviceMemory memory;
|
|
} indices;
|
|
|
|
std::vector<Node*> nodes;
|
|
std::vector<Node*> linearNodes;
|
|
|
|
std::vector<Skin*> skins;
|
|
|
|
std::vector<Texture> textures;
|
|
std::vector<Material> materials;
|
|
std::vector<Animation> animations;
|
|
|
|
struct Dimensions {
|
|
glm::vec3 min = glm::vec3(FLT_MAX);
|
|
glm::vec3 max = glm::vec3(-FLT_MAX);
|
|
glm::vec3 size;
|
|
glm::vec3 center;
|
|
float radius;
|
|
} dimensions;
|
|
|
|
bool metallicRoughnessWorkflow = true;
|
|
|
|
Model() {};
|
|
|
|
~Model()
|
|
{
|
|
vkDestroyBuffer(device->logicalDevice, vertices.buffer, nullptr);
|
|
vkFreeMemory(device->logicalDevice, vertices.memory, nullptr);
|
|
vkDestroyBuffer(device->logicalDevice, indices.buffer, nullptr);
|
|
vkFreeMemory(device->logicalDevice, indices.memory, nullptr);
|
|
for (auto texture : textures) {
|
|
texture.destroy();
|
|
}
|
|
for (auto node : nodes) {
|
|
delete node;
|
|
}
|
|
vkDestroyDescriptorSetLayout(device->logicalDevice, descriptorSetLayout, nullptr);
|
|
vkDestroyDescriptorPool(device->logicalDevice, descriptorPool, nullptr);
|
|
}
|
|
|
|
void loadNode(vkglTF::Node *parent, const tinygltf::Node &node, uint32_t nodeIndex, const tinygltf::Model &model, std::vector<uint32_t>& indexBuffer, std::vector<Vertex>& vertexBuffer, float globalscale)
|
|
{
|
|
vkglTF::Node *newNode = new Node{};
|
|
newNode->index = nodeIndex;
|
|
newNode->parent = parent;
|
|
newNode->name = node.name;
|
|
newNode->skinIndex = node.skin;
|
|
newNode->matrix = glm::mat4(1.0f);
|
|
|
|
// Generate local node matrix
|
|
glm::vec3 translation = glm::vec3(0.0f);
|
|
if (node.translation.size() == 3) {
|
|
translation = glm::make_vec3(node.translation.data());
|
|
newNode->translation = translation;
|
|
}
|
|
glm::mat4 rotation = glm::mat4(1.0f);
|
|
if (node.rotation.size() == 4) {
|
|
glm::quat q = glm::make_quat(node.rotation.data());
|
|
newNode->rotation = glm::mat4(q);
|
|
}
|
|
glm::vec3 scale = glm::vec3(1.0f);
|
|
if (node.scale.size() == 3) {
|
|
scale = glm::make_vec3(node.scale.data());
|
|
newNode->scale = scale;
|
|
}
|
|
if (node.matrix.size() == 16) {
|
|
newNode->matrix = glm::make_mat4x4(node.matrix.data());
|
|
if (globalscale != 1.0f) {
|
|
//newNode->matrix = glm::scale(newNode->matrix, glm::vec3(globalscale));
|
|
}
|
|
};
|
|
|
|
// Node with children
|
|
if (node.children.size() > 0) {
|
|
for (auto i = 0; i < node.children.size(); i++) {
|
|
loadNode(newNode, model.nodes[node.children[i]], node.children[i], model, indexBuffer, vertexBuffer, globalscale);
|
|
}
|
|
}
|
|
|
|
// Node contains mesh data
|
|
if (node.mesh > -1) {
|
|
const tinygltf::Mesh mesh = model.meshes[node.mesh];
|
|
Mesh *newMesh = new Mesh(device, newNode->matrix);
|
|
newMesh->name = mesh.name;
|
|
for (size_t j = 0; j < mesh.primitives.size(); j++) {
|
|
const tinygltf::Primitive &primitive = mesh.primitives[j];
|
|
if (primitive.indices < 0) {
|
|
continue;
|
|
}
|
|
uint32_t indexStart = static_cast<uint32_t>(indexBuffer.size());
|
|
uint32_t vertexStart = static_cast<uint32_t>(vertexBuffer.size());
|
|
uint32_t indexCount = 0;
|
|
glm::vec3 posMin{};
|
|
glm::vec3 posMax{};
|
|
bool hasSkin = false;
|
|
// Vertices
|
|
{
|
|
const float *bufferPos = nullptr;
|
|
const float *bufferNormals = nullptr;
|
|
const float *bufferTexCoords = nullptr;
|
|
const uint16_t *bufferJoints = nullptr;
|
|
const float *bufferWeights = nullptr;
|
|
|
|
// Position attribute is required
|
|
assert(primitive.attributes.find("POSITION") != primitive.attributes.end());
|
|
|
|
const tinygltf::Accessor &posAccessor = model.accessors[primitive.attributes.find("POSITION")->second];
|
|
const tinygltf::BufferView &posView = model.bufferViews[posAccessor.bufferView];
|
|
bufferPos = reinterpret_cast<const float *>(&(model.buffers[posView.buffer].data[posAccessor.byteOffset + posView.byteOffset]));
|
|
posMin = glm::vec3(posAccessor.minValues[0], posAccessor.minValues[1], posAccessor.minValues[2]);
|
|
posMax = glm::vec3(posAccessor.maxValues[0], posAccessor.maxValues[1], posAccessor.maxValues[2]);
|
|
|
|
if (primitive.attributes.find("NORMAL") != primitive.attributes.end()) {
|
|
const tinygltf::Accessor &normAccessor = model.accessors[primitive.attributes.find("NORMAL")->second];
|
|
const tinygltf::BufferView &normView = model.bufferViews[normAccessor.bufferView];
|
|
bufferNormals = reinterpret_cast<const float *>(&(model.buffers[normView.buffer].data[normAccessor.byteOffset + normView.byteOffset]));
|
|
}
|
|
|
|
if (primitive.attributes.find("TEXCOORD_0") != primitive.attributes.end()) {
|
|
const tinygltf::Accessor &uvAccessor = model.accessors[primitive.attributes.find("TEXCOORD_0")->second];
|
|
const tinygltf::BufferView &uvView = model.bufferViews[uvAccessor.bufferView];
|
|
bufferTexCoords = reinterpret_cast<const float *>(&(model.buffers[uvView.buffer].data[uvAccessor.byteOffset + uvView.byteOffset]));
|
|
}
|
|
|
|
// Skinning
|
|
// Joints
|
|
if (primitive.attributes.find("JOINTS_0") != primitive.attributes.end()) {
|
|
const tinygltf::Accessor &jointAccessor = model.accessors[primitive.attributes.find("JOINTS_0")->second];
|
|
const tinygltf::BufferView &jointView = model.bufferViews[jointAccessor.bufferView];
|
|
bufferJoints = reinterpret_cast<const uint16_t *>(&(model.buffers[jointView.buffer].data[jointAccessor.byteOffset + jointView.byteOffset]));
|
|
}
|
|
|
|
if (primitive.attributes.find("WEIGHTS_0") != primitive.attributes.end()) {
|
|
const tinygltf::Accessor &uvAccessor = model.accessors[primitive.attributes.find("WEIGHTS_0")->second];
|
|
const tinygltf::BufferView &uvView = model.bufferViews[uvAccessor.bufferView];
|
|
bufferWeights = reinterpret_cast<const float *>(&(model.buffers[uvView.buffer].data[uvAccessor.byteOffset + uvView.byteOffset]));
|
|
}
|
|
|
|
hasSkin = (bufferJoints && bufferWeights);
|
|
|
|
for (size_t v = 0; v < posAccessor.count; v++) {
|
|
Vertex vert{};
|
|
vert.pos = glm::vec4(glm::make_vec3(&bufferPos[v * 3]), 1.0f);
|
|
vert.normal = glm::normalize(glm::vec3(bufferNormals ? glm::make_vec3(&bufferNormals[v * 3]) : glm::vec3(0.0f)));
|
|
vert.uv = bufferTexCoords ? glm::make_vec2(&bufferTexCoords[v * 2]) : glm::vec3(0.0f);
|
|
|
|
vert.joint0 = hasSkin ? glm::vec4(glm::make_vec4(&bufferJoints[v * 4])) : glm::vec4(0.0f);
|
|
vert.weight0 = hasSkin ? glm::make_vec4(&bufferWeights[v * 4]) : glm::vec4(0.0f);
|
|
vertexBuffer.push_back(vert);
|
|
}
|
|
}
|
|
// Indices
|
|
{
|
|
const tinygltf::Accessor &accessor = model.accessors[primitive.indices];
|
|
const tinygltf::BufferView &bufferView = model.bufferViews[accessor.bufferView];
|
|
const tinygltf::Buffer &buffer = model.buffers[bufferView.buffer];
|
|
|
|
indexCount = static_cast<uint32_t>(accessor.count);
|
|
|
|
switch (accessor.componentType) {
|
|
case TINYGLTF_PARAMETER_TYPE_UNSIGNED_INT: {
|
|
uint32_t *buf = new uint32_t[accessor.count];
|
|
memcpy(buf, &buffer.data[accessor.byteOffset + bufferView.byteOffset], accessor.count * sizeof(uint32_t));
|
|
for (size_t index = 0; index < accessor.count; index++) {
|
|
indexBuffer.push_back(buf[index] + vertexStart);
|
|
}
|
|
break;
|
|
}
|
|
case TINYGLTF_PARAMETER_TYPE_UNSIGNED_SHORT: {
|
|
uint16_t *buf = new uint16_t[accessor.count];
|
|
memcpy(buf, &buffer.data[accessor.byteOffset + bufferView.byteOffset], accessor.count * sizeof(uint16_t));
|
|
for (size_t index = 0; index < accessor.count; index++) {
|
|
indexBuffer.push_back(buf[index] + vertexStart);
|
|
}
|
|
break;
|
|
}
|
|
case TINYGLTF_PARAMETER_TYPE_UNSIGNED_BYTE: {
|
|
uint8_t *buf = new uint8_t[accessor.count];
|
|
memcpy(buf, &buffer.data[accessor.byteOffset + bufferView.byteOffset], accessor.count * sizeof(uint8_t));
|
|
for (size_t index = 0; index < accessor.count; index++) {
|
|
indexBuffer.push_back(buf[index] + vertexStart);
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
std::cerr << "Index component type " << accessor.componentType << " not supported!" << std::endl;
|
|
return;
|
|
}
|
|
}
|
|
Primitive *newPrimitive = new Primitive(indexStart, indexCount, materials[primitive.material]);
|
|
newPrimitive->setDimensions(posMin, posMax);
|
|
newMesh->primitives.push_back(newPrimitive);
|
|
}
|
|
newNode->mesh = newMesh;
|
|
}
|
|
if (parent) {
|
|
parent->children.push_back(newNode);
|
|
} else {
|
|
nodes.push_back(newNode);
|
|
}
|
|
linearNodes.push_back(newNode);
|
|
}
|
|
|
|
void loadSkins(tinygltf::Model &gltfModel)
|
|
{
|
|
for (tinygltf::Skin &source : gltfModel.skins) {
|
|
Skin *newSkin = new Skin{};
|
|
newSkin->name = source.name;
|
|
|
|
// Find skeleton root node
|
|
if (source.skeleton > -1) {
|
|
newSkin->skeletonRoot = nodeFromIndex(source.skeleton);
|
|
}
|
|
|
|
// Find joint nodes
|
|
for (int jointIndex : source.joints) {
|
|
Node* node = nodeFromIndex(jointIndex);
|
|
if (node) {
|
|
newSkin->joints.push_back(nodeFromIndex(jointIndex));
|
|
}
|
|
}
|
|
|
|
// Get inverse bind matrices from buffer
|
|
if (source.inverseBindMatrices > -1) {
|
|
const tinygltf::Accessor &accessor = gltfModel.accessors[source.inverseBindMatrices];
|
|
const tinygltf::BufferView &bufferView = gltfModel.bufferViews[accessor.bufferView];
|
|
const tinygltf::Buffer &buffer = gltfModel.buffers[bufferView.buffer];
|
|
newSkin->inverseBindMatrices.resize(accessor.count);
|
|
memcpy(newSkin->inverseBindMatrices.data(), &buffer.data[accessor.byteOffset + bufferView.byteOffset], accessor.count * sizeof(glm::mat4));
|
|
}
|
|
|
|
skins.push_back(newSkin);
|
|
}
|
|
}
|
|
|
|
void loadImages(tinygltf::Model &gltfModel, vks::VulkanDevice *device, VkQueue transferQueue)
|
|
{
|
|
for (tinygltf::Image &image : gltfModel.images) {
|
|
vkglTF::Texture texture;
|
|
texture.fromglTfImage(image, device, transferQueue);
|
|
textures.push_back(texture);
|
|
}
|
|
}
|
|
|
|
void loadMaterials(tinygltf::Model &gltfModel)
|
|
{
|
|
for (tinygltf::Material &mat : gltfModel.materials) {
|
|
vkglTF::Material material{};
|
|
if (mat.values.find("baseColorTexture") != mat.values.end()) {
|
|
material.baseColorTexture = &textures[gltfModel.textures[mat.values["baseColorTexture"].TextureIndex()].source];
|
|
}
|
|
// Metallic roughness workflow
|
|
if (mat.values.find("metallicRoughnessTexture") != mat.values.end()) {
|
|
material.metallicRoughnessTexture = &textures[gltfModel.textures[mat.values["metallicRoughnessTexture"].TextureIndex()].source];
|
|
}
|
|
if (mat.values.find("roughnessFactor") != mat.values.end()) {
|
|
material.roughnessFactor = static_cast<float>(mat.values["roughnessFactor"].Factor());
|
|
}
|
|
if (mat.values.find("metallicFactor") != mat.values.end()) {
|
|
material.metallicFactor = static_cast<float>(mat.values["metallicFactor"].Factor());
|
|
}
|
|
if (mat.values.find("baseColorFactor") != mat.values.end()) {
|
|
material.baseColorFactor = glm::make_vec4(mat.values["baseColorFactor"].ColorFactor().data());
|
|
}
|
|
if (mat.additionalValues.find("normalTexture") != mat.additionalValues.end()) {
|
|
material.normalTexture = &textures[gltfModel.textures[mat.additionalValues["normalTexture"].TextureIndex()].source];
|
|
}
|
|
if (mat.additionalValues.find("emissiveTexture") != mat.additionalValues.end()) {
|
|
material.emissiveTexture = &textures[gltfModel.textures[mat.additionalValues["emissiveTexture"].TextureIndex()].source];
|
|
}
|
|
if (mat.additionalValues.find("occlusionTexture") != mat.additionalValues.end()) {
|
|
material.occlusionTexture = &textures[gltfModel.textures[mat.additionalValues["occlusionTexture"].TextureIndex()].source];
|
|
}
|
|
if (mat.additionalValues.find("alphaMode") != mat.additionalValues.end()) {
|
|
tinygltf::Parameter param = mat.additionalValues["alphaMode"];
|
|
if (param.string_value == "BLEND") {
|
|
material.alphaMode = Material::ALPHAMODE_BLEND;
|
|
}
|
|
if (param.string_value == "MASK") {
|
|
material.alphaMode = Material::ALPHAMODE_MASK;
|
|
}
|
|
}
|
|
if (mat.additionalValues.find("alphaCutoff") != mat.additionalValues.end()) {
|
|
material.alphaCutoff = static_cast<float>(mat.additionalValues["alphaCutoff"].Factor());
|
|
}
|
|
|
|
materials.push_back(material);
|
|
}
|
|
}
|
|
|
|
void loadAnimations(tinygltf::Model &gltfModel)
|
|
{
|
|
for (tinygltf::Animation &anim : gltfModel.animations) {
|
|
vkglTF::Animation animation{};
|
|
animation.name = anim.name;
|
|
if (anim.name.empty()) {
|
|
animation.name = std::to_string(animations.size());
|
|
}
|
|
|
|
// Samplers
|
|
for (auto &samp : anim.samplers) {
|
|
vkglTF::AnimationSampler sampler{};
|
|
|
|
if (samp.interpolation == "LINEAR") {
|
|
sampler.interpolation = AnimationSampler::InterpolationType::LINEAR;
|
|
}
|
|
if (samp.interpolation == "STEP") {
|
|
sampler.interpolation = AnimationSampler::InterpolationType::STEP;
|
|
}
|
|
if (samp.interpolation == "CUBICSPLINE") {
|
|
sampler.interpolation = AnimationSampler::InterpolationType::CUBICSPLINE;
|
|
}
|
|
|
|
// Read sampler input time values
|
|
{
|
|
const tinygltf::Accessor &accessor = gltfModel.accessors[samp.input];
|
|
const tinygltf::BufferView &bufferView = gltfModel.bufferViews[accessor.bufferView];
|
|
const tinygltf::Buffer &buffer = gltfModel.buffers[bufferView.buffer];
|
|
|
|
assert(accessor.componentType == TINYGLTF_COMPONENT_TYPE_FLOAT);
|
|
|
|
float *buf = new float[accessor.count];
|
|
memcpy(buf, &buffer.data[accessor.byteOffset + bufferView.byteOffset], accessor.count * sizeof(float));
|
|
for (size_t index = 0; index < accessor.count; index++) {
|
|
sampler.inputs.push_back(buf[index]);
|
|
}
|
|
|
|
for (auto input : sampler.inputs) {
|
|
if (input < animation.start) {
|
|
animation.start = input;
|
|
};
|
|
if (input > animation.end) {
|
|
animation.end = input;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Read sampler output T/R/S values
|
|
{
|
|
const tinygltf::Accessor &accessor = gltfModel.accessors[samp.output];
|
|
const tinygltf::BufferView &bufferView = gltfModel.bufferViews[accessor.bufferView];
|
|
const tinygltf::Buffer &buffer = gltfModel.buffers[bufferView.buffer];
|
|
|
|
assert(accessor.componentType == TINYGLTF_COMPONENT_TYPE_FLOAT);
|
|
|
|
switch (accessor.type) {
|
|
case TINYGLTF_TYPE_VEC3: {
|
|
glm::vec3 *buf = new glm::vec3[accessor.count];
|
|
memcpy(buf, &buffer.data[accessor.byteOffset + bufferView.byteOffset], accessor.count * sizeof(glm::vec3));
|
|
for (size_t index = 0; index < accessor.count; index++) {
|
|
sampler.outputsVec4.push_back(glm::vec4(buf[index], 0.0f));
|
|
}
|
|
break;
|
|
}
|
|
case TINYGLTF_TYPE_VEC4: {
|
|
glm::vec4 *buf = new glm::vec4[accessor.count];
|
|
memcpy(buf, &buffer.data[accessor.byteOffset + bufferView.byteOffset], accessor.count * sizeof(glm::vec4));
|
|
for (size_t index = 0; index < accessor.count; index++) {
|
|
sampler.outputsVec4.push_back(buf[index]);
|
|
}
|
|
break;
|
|
}
|
|
default: {
|
|
std::cout << "unknown type" << std::endl;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
animation.samplers.push_back(sampler);
|
|
}
|
|
|
|
// Channels
|
|
for (auto &source: anim.channels) {
|
|
vkglTF::AnimationChannel channel{};
|
|
|
|
if (source.target_path == "rotation") {
|
|
channel.path = AnimationChannel::PathType::ROTATION;
|
|
}
|
|
if (source.target_path == "translation") {
|
|
channel.path = AnimationChannel::PathType::TRANSLATION;
|
|
}
|
|
if (source.target_path == "scale") {
|
|
channel.path = AnimationChannel::PathType::SCALE;
|
|
}
|
|
if (source.target_path == "weights") {
|
|
std::cout << "weights not yet supported, skipping channel" << std::endl;
|
|
continue;
|
|
}
|
|
channel.samplerIndex = source.sampler;
|
|
channel.node = nodeFromIndex(source.target_node);
|
|
if (!channel.node) {
|
|
continue;
|
|
}
|
|
|
|
animation.channels.push_back(channel);
|
|
}
|
|
|
|
animations.push_back(animation);
|
|
}
|
|
}
|
|
|
|
void loadFromFile(std::string filename, vks::VulkanDevice *device, VkQueue transferQueue, float scale = 1.0f)
|
|
{
|
|
tinygltf::Model gltfModel;
|
|
tinygltf::TinyGLTF gltfContext;
|
|
std::string error, warning;
|
|
|
|
this->device = device;
|
|
|
|
#if defined(__ANDROID__)
|
|
AAsset* asset = AAssetManager_open(androidApp->activity->assetManager, filename.c_str(), AASSET_MODE_STREAMING);
|
|
assert(asset);
|
|
size_t size = AAsset_getLength(asset);
|
|
assert(size > 0);
|
|
char* fileData = new char[size];
|
|
AAsset_read(asset, fileData, size);
|
|
AAsset_close(asset);
|
|
std::string baseDir;
|
|
bool fileLoaded = gltfContext.LoadASCIIFromString(&gltfModel, &error, &warning, fileData, size, baseDir);
|
|
free(fileData);
|
|
#else
|
|
bool fileLoaded = gltfContext.LoadASCIIFromFile(&gltfModel, &error, &warning, filename);
|
|
#endif
|
|
std::vector<uint32_t> indexBuffer;
|
|
std::vector<Vertex> vertexBuffer;
|
|
|
|
if (fileLoaded) {
|
|
loadImages(gltfModel, device, transferQueue);
|
|
loadMaterials(gltfModel);
|
|
const tinygltf::Scene &scene = gltfModel.scenes[gltfModel.defaultScene > -1 ? gltfModel.defaultScene : 0];
|
|
for (size_t i = 0; i < scene.nodes.size(); i++) {
|
|
const tinygltf::Node node = gltfModel.nodes[scene.nodes[i]];
|
|
loadNode(nullptr, node, scene.nodes[i], gltfModel, indexBuffer, vertexBuffer, scale);
|
|
}
|
|
if (gltfModel.animations.size() > 0) {
|
|
loadAnimations(gltfModel);
|
|
}
|
|
loadSkins(gltfModel);
|
|
|
|
for (auto node : linearNodes) {
|
|
// Assign skins
|
|
if (node->skinIndex > -1) {
|
|
node->skin = skins[node->skinIndex];
|
|
}
|
|
// Initial pose
|
|
if (node->mesh) {
|
|
node->update();
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
// TODO: throw
|
|
std::cerr << "Could not load gltf file: " << error << std::endl;
|
|
return;
|
|
}
|
|
|
|
for (auto extension : gltfModel.extensionsUsed) {
|
|
if (extension == "KHR_materials_pbrSpecularGlossiness") {
|
|
std::cout << "Required extension: " << extension;
|
|
metallicRoughnessWorkflow = false;
|
|
}
|
|
}
|
|
|
|
size_t vertexBufferSize = vertexBuffer.size() * sizeof(Vertex);
|
|
size_t indexBufferSize = indexBuffer.size() * sizeof(uint32_t);
|
|
indices.count = static_cast<uint32_t>(indexBuffer.size());
|
|
|
|
assert((vertexBufferSize > 0) && (indexBufferSize > 0));
|
|
|
|
struct StagingBuffer {
|
|
VkBuffer buffer;
|
|
VkDeviceMemory memory;
|
|
} vertexStaging, indexStaging;
|
|
|
|
// Create staging buffers
|
|
// Vertex data
|
|
VK_CHECK_RESULT(device->createBuffer(
|
|
VK_BUFFER_USAGE_TRANSFER_SRC_BIT,
|
|
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
|
|
vertexBufferSize,
|
|
&vertexStaging.buffer,
|
|
&vertexStaging.memory,
|
|
vertexBuffer.data()));
|
|
// Index data
|
|
VK_CHECK_RESULT(device->createBuffer(
|
|
VK_BUFFER_USAGE_TRANSFER_SRC_BIT,
|
|
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
|
|
indexBufferSize,
|
|
&indexStaging.buffer,
|
|
&indexStaging.memory,
|
|
indexBuffer.data()));
|
|
|
|
// Create device local buffers
|
|
// Vertex buffer
|
|
VK_CHECK_RESULT(device->createBuffer(
|
|
VK_BUFFER_USAGE_VERTEX_BUFFER_BIT | VK_BUFFER_USAGE_TRANSFER_DST_BIT,
|
|
VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT,
|
|
vertexBufferSize,
|
|
&vertices.buffer,
|
|
&vertices.memory));
|
|
// Index buffer
|
|
VK_CHECK_RESULT(device->createBuffer(
|
|
VK_BUFFER_USAGE_INDEX_BUFFER_BIT | VK_BUFFER_USAGE_TRANSFER_DST_BIT,
|
|
VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT,
|
|
indexBufferSize,
|
|
&indices.buffer,
|
|
&indices.memory));
|
|
|
|
// Copy from staging buffers
|
|
VkCommandBuffer copyCmd = device->createCommandBuffer(VK_COMMAND_BUFFER_LEVEL_PRIMARY, true);
|
|
|
|
VkBufferCopy copyRegion = {};
|
|
|
|
copyRegion.size = vertexBufferSize;
|
|
vkCmdCopyBuffer(copyCmd, vertexStaging.buffer, vertices.buffer, 1, ©Region);
|
|
|
|
copyRegion.size = indexBufferSize;
|
|
vkCmdCopyBuffer(copyCmd, indexStaging.buffer, indices.buffer, 1, ©Region);
|
|
|
|
device->flushCommandBuffer(copyCmd, transferQueue, true);
|
|
|
|
vkDestroyBuffer(device->logicalDevice, vertexStaging.buffer, nullptr);
|
|
vkFreeMemory(device->logicalDevice, vertexStaging.memory, nullptr);
|
|
vkDestroyBuffer(device->logicalDevice, indexStaging.buffer, nullptr);
|
|
vkFreeMemory(device->logicalDevice, indexStaging.memory, nullptr);
|
|
|
|
getSceneDimensions();
|
|
|
|
// Setup descriptors
|
|
uint32_t uboCount{ 0 };
|
|
for (auto node : linearNodes) {
|
|
if (node->mesh) {
|
|
uboCount++;
|
|
}
|
|
}
|
|
std::vector<VkDescriptorPoolSize> poolSizes = {
|
|
vks::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, uboCount),
|
|
};
|
|
VkDescriptorPoolCreateInfo descriptorPoolCI = vks::initializers::descriptorPoolCreateInfo(static_cast<uint32_t>(poolSizes.size()), poolSizes.data(), uboCount);
|
|
VK_CHECK_RESULT(vkCreateDescriptorPool(device->logicalDevice, &descriptorPoolCI, nullptr, &descriptorPool));
|
|
|
|
std::vector<VkDescriptorSetLayoutBinding> setLayoutBindings = {
|
|
vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, VK_SHADER_STAGE_VERTEX_BIT, 0),
|
|
};
|
|
VkDescriptorSetLayoutCreateInfo descriptorLayoutCI{};
|
|
descriptorLayoutCI.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO;
|
|
descriptorLayoutCI.bindingCount = static_cast<uint32_t>(setLayoutBindings.size());
|
|
descriptorLayoutCI.pBindings = setLayoutBindings.data();
|
|
VK_CHECK_RESULT(vkCreateDescriptorSetLayout(device->logicalDevice, &descriptorLayoutCI, nullptr, &descriptorSetLayout));
|
|
for (auto node : nodes) {
|
|
prepareNodeDescriptor(node, descriptorSetLayout);
|
|
}
|
|
}
|
|
|
|
void drawNode(Node *node, VkCommandBuffer commandBuffer)
|
|
{
|
|
if (node->mesh) {
|
|
for (Primitive *primitive : node->mesh->primitives) {
|
|
vkCmdDrawIndexed(commandBuffer, primitive->indexCount, 1, primitive->firstIndex, 0, 0);
|
|
}
|
|
}
|
|
for (auto& child : node->children) {
|
|
drawNode(child, commandBuffer);
|
|
}
|
|
}
|
|
|
|
void draw(VkCommandBuffer commandBuffer)
|
|
{
|
|
const VkDeviceSize offsets[1] = { 0 };
|
|
vkCmdBindVertexBuffers(commandBuffer, 0, 1, &vertices.buffer, offsets);
|
|
vkCmdBindIndexBuffer(commandBuffer, indices.buffer, 0, VK_INDEX_TYPE_UINT32);
|
|
for (auto& node : nodes) {
|
|
drawNode(node, commandBuffer);
|
|
}
|
|
}
|
|
|
|
void getNodeDimensions(Node *node, glm::vec3 &min, glm::vec3 &max)
|
|
{
|
|
if (node->mesh) {
|
|
for (Primitive *primitive : node->mesh->primitives) {
|
|
glm::vec4 locMin = glm::vec4(primitive->dimensions.min, 1.0f) * node->getMatrix();
|
|
glm::vec4 locMax = glm::vec4(primitive->dimensions.max, 1.0f) * node->getMatrix();
|
|
if (locMin.x < min.x) { min.x = locMin.x; }
|
|
if (locMin.y < min.y) { min.y = locMin.y; }
|
|
if (locMin.z < min.z) { min.z = locMin.z; }
|
|
if (locMax.x > max.x) { max.x = locMax.x; }
|
|
if (locMax.y > max.y) { max.y = locMax.y; }
|
|
if (locMax.z > max.z) { max.z = locMax.z; }
|
|
}
|
|
}
|
|
for (auto child : node->children) {
|
|
getNodeDimensions(child, min, max);
|
|
}
|
|
}
|
|
|
|
void getSceneDimensions()
|
|
{
|
|
dimensions.min = glm::vec3(FLT_MAX);
|
|
dimensions.max = glm::vec3(-FLT_MAX);
|
|
for (auto node : nodes) {
|
|
getNodeDimensions(node, dimensions.min, dimensions.max);
|
|
}
|
|
dimensions.size = dimensions.max - dimensions.min;
|
|
dimensions.center = (dimensions.min + dimensions.max) / 2.0f;
|
|
dimensions.radius = glm::distance(dimensions.min, dimensions.max) / 2.0f;
|
|
}
|
|
|
|
void updateAnimation(uint32_t index, float time)
|
|
{
|
|
if (index > static_cast<uint32_t>(animations.size()) - 1) {
|
|
std::cout << "No animation with index " << index << std::endl;
|
|
return;
|
|
}
|
|
Animation &animation = animations[index];
|
|
|
|
bool updated = false;
|
|
for (auto& channel : animation.channels) {
|
|
vkglTF::AnimationSampler &sampler = animation.samplers[channel.samplerIndex];
|
|
if (sampler.inputs.size() > sampler.outputsVec4.size()) {
|
|
continue;
|
|
}
|
|
|
|
for (auto i = 0; i < sampler.inputs.size() - 1; i++) {
|
|
if ((time >= sampler.inputs[i]) && (time <= sampler.inputs[i + 1])) {
|
|
float u = std::max(0.0f, time - sampler.inputs[i]) / (sampler.inputs[i + 1] - sampler.inputs[i]);
|
|
if (u <= 1.0f) {
|
|
switch (channel.path) {
|
|
case vkglTF::AnimationChannel::PathType::TRANSLATION: {
|
|
glm::vec4 trans = glm::mix(sampler.outputsVec4[i], sampler.outputsVec4[i + 1], u);
|
|
channel.node->translation = glm::vec3(trans);
|
|
break;
|
|
}
|
|
case vkglTF::AnimationChannel::PathType::SCALE: {
|
|
glm::vec4 trans = glm::mix(sampler.outputsVec4[i], sampler.outputsVec4[i + 1], u);
|
|
channel.node->scale = glm::vec3(trans);
|
|
break;
|
|
}
|
|
case vkglTF::AnimationChannel::PathType::ROTATION: {
|
|
glm::quat q1;
|
|
q1.x = sampler.outputsVec4[i].x;
|
|
q1.y = sampler.outputsVec4[i].y;
|
|
q1.z = sampler.outputsVec4[i].z;
|
|
q1.w = sampler.outputsVec4[i].w;
|
|
glm::quat q2;
|
|
q2.x = sampler.outputsVec4[i + 1].x;
|
|
q2.y = sampler.outputsVec4[i + 1].y;
|
|
q2.z = sampler.outputsVec4[i + 1].z;
|
|
q2.w = sampler.outputsVec4[i + 1].w;
|
|
channel.node->rotation = glm::normalize(glm::slerp(q1, q2, u));
|
|
break;
|
|
}
|
|
}
|
|
updated = true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (updated) {
|
|
for (auto &node : nodes) {
|
|
node->update();
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
Helper functions
|
|
*/
|
|
Node* findNode(Node *parent, uint32_t index) {
|
|
Node* nodeFound = nullptr;
|
|
if (parent->index == index) {
|
|
return parent;
|
|
}
|
|
for (auto& child : parent->children) {
|
|
nodeFound = findNode(child, index);
|
|
if (nodeFound) {
|
|
break;
|
|
}
|
|
}
|
|
return nodeFound;
|
|
}
|
|
|
|
Node* nodeFromIndex(uint32_t index) {
|
|
Node* nodeFound = nullptr;
|
|
for (auto &node : nodes) {
|
|
nodeFound = findNode(node, index);
|
|
if (nodeFound) {
|
|
break;
|
|
}
|
|
}
|
|
return nodeFound;
|
|
}
|
|
|
|
void prepareNodeDescriptor(vkglTF::Node *node, VkDescriptorSetLayout descriptorSetLayout) {
|
|
if (node->mesh) {
|
|
VkDescriptorSetAllocateInfo descriptorSetAllocInfo{};
|
|
descriptorSetAllocInfo.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO;
|
|
descriptorSetAllocInfo.descriptorPool = descriptorPool;
|
|
descriptorSetAllocInfo.pSetLayouts = &descriptorSetLayout;
|
|
descriptorSetAllocInfo.descriptorSetCount = 1;
|
|
VK_CHECK_RESULT(vkAllocateDescriptorSets(device->logicalDevice, &descriptorSetAllocInfo, &node->mesh->uniformBuffer.descriptorSet));
|
|
|
|
VkWriteDescriptorSet writeDescriptorSet{};
|
|
writeDescriptorSet.sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
|
|
writeDescriptorSet.descriptorType = VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER;
|
|
writeDescriptorSet.descriptorCount = 1;
|
|
writeDescriptorSet.dstSet = node->mesh->uniformBuffer.descriptorSet;
|
|
writeDescriptorSet.dstBinding = 0;
|
|
writeDescriptorSet.pBufferInfo = &node->mesh->uniformBuffer.descriptor;
|
|
|
|
vkUpdateDescriptorSets(device->logicalDevice, 1, &writeDescriptorSet, 0, nullptr);
|
|
}
|
|
for (auto& child : node->children) {
|
|
prepareNodeDescriptor(child, descriptorSetLayout);
|
|
}
|
|
}
|
|
};
|
|
} |