555 lines
23 KiB
C++
555 lines
23 KiB
C++
/*
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* Vulkan Example - Runtime mip map generation
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*
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* This samples shows how to generate a full mip-chain from a top-level image and how different sampling modes compare
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*
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* Copyright (C) 2016-2023 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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#include "vulkanexamplebase.h"
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#include "VulkanglTFModel.h"
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#include <ktx.h>
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#include <ktxvulkan.h>
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class VulkanExample : public VulkanExampleBase
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{
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public:
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struct Texture {
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VkImage image{ VK_NULL_HANDLE };
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VkDeviceMemory deviceMemory{ VK_NULL_HANDLE };
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VkImageView view{ VK_NULL_HANDLE };
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uint32_t width{ 0 };
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uint32_t height{ 0 };
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uint32_t mipLevels{ 0 };
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} texture;
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// To demonstrate mip mapping and filtering this example uses separate samplers
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std::vector<std::string> samplerNames{ "No mip maps" , "Mip maps (bilinear)" , "Mip maps (anisotropic)" };
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std::vector<VkSampler> samplers{};
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vkglTF::Model model;
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struct UniformData {
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glm::mat4 projection;
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glm::mat4 view;
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glm::mat4 model;
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glm::vec4 viewPos;
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float lodBias = 0.0f;
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int32_t samplerIndex = 2;
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} uniformData;
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vks::Buffer uniformBuffer;
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VkPipeline pipeline{ VK_NULL_HANDLE };
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VkPipelineLayout pipelineLayout{ VK_NULL_HANDLE };
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VkDescriptorSet descriptorSet{ VK_NULL_HANDLE };
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VkDescriptorSetLayout descriptorSetLayout{ VK_NULL_HANDLE };
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VulkanExample() : VulkanExampleBase()
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{
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title = "Runtime mip map generation";
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camera.type = Camera::CameraType::firstperson;
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camera.setPerspective(60.0f, (float)width / (float)height, 0.1f, 1024.0f);
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camera.setRotation(glm::vec3(0.0f, 90.0f, 0.0f));
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camera.setTranslation(glm::vec3(40.75f, 0.0f, 0.0f));
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camera.movementSpeed = 2.5f;
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camera.rotationSpeed = 0.5f;
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timerSpeed *= 0.05f;
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}
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~VulkanExample()
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{
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if (device) {
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destroyTextureImage(texture);
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vkDestroyPipeline(device, pipeline, nullptr);
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vkDestroyPipelineLayout(device, pipelineLayout, nullptr);
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vkDestroyDescriptorSetLayout(device, descriptorSetLayout, nullptr);
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uniformBuffer.destroy();
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for (auto sampler : samplers) {
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vkDestroySampler(device, sampler, nullptr);
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}
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}
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}
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virtual void getEnabledFeatures()
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{
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if (deviceFeatures.samplerAnisotropy) {
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enabledFeatures.samplerAnisotropy = VK_TRUE;
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}
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}
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// Loads a full sized image from disk, generates a Vulkan image (texture) from it and creates a full mip chain using blits
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void loadTextureAndGenerateMips(std::string filename, VkFormat format)
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{
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ktxResult result;
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ktxTexture* ktxTexture;
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#if defined(__ANDROID__)
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// Textures are stored inside the apk on Android (compressed)
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// So they need to be loaded via the asset manager
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AAsset* asset = AAssetManager_open(androidApp->activity->assetManager, filename.c_str(), AASSET_MODE_STREAMING);
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if (!asset) {
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vks::tools::exitFatal("Could not load texture from " + filename + "\n\nMake sure the assets submodule has been checked out and is up-to-date.", -1);
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}
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size_t size = AAsset_getLength(asset);
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assert(size > 0);
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ktx_uint8_t *textureData = new ktx_uint8_t[size];
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AAsset_read(asset, textureData, size);
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AAsset_close(asset);
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result = ktxTexture_CreateFromMemory(textureData, size, KTX_TEXTURE_CREATE_LOAD_IMAGE_DATA_BIT, &ktxTexture);
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delete[] textureData;
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#else
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if (!vks::tools::fileExists(filename)) {
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vks::tools::exitFatal("Could not load texture from " + filename + "\n\nMake sure the assets submodule has been checked out and is up-to-date.", -1);
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}
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result = ktxTexture_CreateFromNamedFile(filename.c_str(), KTX_TEXTURE_CREATE_LOAD_IMAGE_DATA_BIT, &ktxTexture);
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#endif
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assert(result == KTX_SUCCESS);
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texture.width = ktxTexture->baseWidth;
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texture.height = ktxTexture->baseHeight;
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ktx_uint8_t *ktxTextureData = ktxTexture_GetData(ktxTexture);
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ktx_size_t ktxTextureSize = ktxTexture_GetImageSize(ktxTexture, 0);
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// calculate num of mip maps
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// numLevels = 1 + floor(log2(max(w, h, d)))
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// Calculated as log2(max(width, height, depth))c + 1 (see specs)
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texture.mipLevels = static_cast<uint32_t>(floor(log2(std::max(texture.width, texture.height))) + 1);
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// Get device properties for the requested texture format
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VkFormatProperties formatProperties;
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vkGetPhysicalDeviceFormatProperties(physicalDevice, format, &formatProperties);
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// Mip-chain generation requires support for blit source and destination
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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 = vks::initializers::memoryAllocateInfo();
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VkMemoryRequirements memReqs = {};
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// Create a host-visible staging buffer that contains the raw image data
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VkBuffer stagingBuffer;
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VkDeviceMemory stagingMemory;
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VkBufferCreateInfo bufferCreateInfo = vks::initializers::bufferCreateInfo();
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bufferCreateInfo.size = ktxTextureSize;
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// This buffer is used as a transfer source for the buffer copy
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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, &bufferCreateInfo, nullptr, &stagingBuffer));
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vkGetBufferMemoryRequirements(device, stagingBuffer, &memReqs);
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memAllocInfo.allocationSize = memReqs.size;
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memAllocInfo.memoryTypeIndex = vulkanDevice->getMemoryType(memReqs.memoryTypeBits, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT);
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VK_CHECK_RESULT(vkAllocateMemory(device, &memAllocInfo, nullptr, &stagingMemory));
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VK_CHECK_RESULT(vkBindBufferMemory(device, stagingBuffer, stagingMemory, 0));
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// Copy texture data into staging buffer
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uint8_t *data;
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VK_CHECK_RESULT(vkMapMemory(device, stagingMemory, 0, memReqs.size, 0, (void **)&data));
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memcpy(data, ktxTextureData, ktxTextureSize);
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vkUnmapMemory(device, stagingMemory);
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// Create optimal tiled target image
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VkImageCreateInfo imageCreateInfo = vks::initializers::imageCreateInfo();
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imageCreateInfo.imageType = VK_IMAGE_TYPE_2D;
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imageCreateInfo.format = format;
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imageCreateInfo.mipLevels = texture.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.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
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imageCreateInfo.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
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imageCreateInfo.extent = { texture.width, texture.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, &imageCreateInfo, nullptr, &texture.image));
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vkGetImageMemoryRequirements(device, texture.image, &memReqs);
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memAllocInfo.allocationSize = memReqs.size;
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memAllocInfo.memoryTypeIndex = vulkanDevice->getMemoryType(memReqs.memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);
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VK_CHECK_RESULT(vkAllocateMemory(device, &memAllocInfo, nullptr, &texture.deviceMemory));
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VK_CHECK_RESULT(vkBindImageMemory(device, texture.image, texture.deviceMemory, 0));
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VkCommandBuffer copyCmd = vulkanDevice->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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// Optimal image will be used as destination for the copy, so we must transfer from our initial undefined image layout to the transfer destination layout
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vks::tools::insertImageMemoryBarrier(
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copyCmd,
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texture.image,
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0,
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VK_ACCESS_TRANSFER_WRITE_BIT,
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VK_IMAGE_LAYOUT_UNDEFINED,
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VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL,
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VK_PIPELINE_STAGE_TRANSFER_BIT,
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VK_PIPELINE_STAGE_TRANSFER_BIT,
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subresourceRange);
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// Copy the first mip of the chain, remaining mips will be generated
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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 = texture.width;
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bufferCopyRegion.imageExtent.height = texture.height;
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bufferCopyRegion.imageExtent.depth = 1;
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vkCmdCopyBufferToImage(copyCmd, stagingBuffer, texture.image, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, 1, &bufferCopyRegion);
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// Transition first mip level to transfer source for read during blit
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vks::tools::insertImageMemoryBarrier(
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copyCmd,
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texture.image,
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VK_ACCESS_TRANSFER_WRITE_BIT,
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VK_ACCESS_TRANSFER_READ_BIT,
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VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL,
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VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL,
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VK_PIPELINE_STAGE_TRANSFER_BIT,
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VK_PIPELINE_STAGE_TRANSFER_BIT,
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subresourceRange);
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vulkanDevice->flushCommandBuffer(copyCmd, queue, true);
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// Clean up staging resources
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vkFreeMemory(device, stagingMemory, nullptr);
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vkDestroyBuffer(device, stagingBuffer, nullptr);
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ktxTexture_Destroy(ktxTexture);
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// Generate the mip chain
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// ---------------------------------------------------------------
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// We copy down the whole mip chain doing a blit from mip-1 to mip
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// An alternative way would be to always blit from the first mip level and sample that one down
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VkCommandBuffer blitCmd = vulkanDevice->createCommandBuffer(VK_COMMAND_BUFFER_LEVEL_PRIMARY, true);
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// Copy down mips from n-1 to n
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for (uint32_t i = 1; i < texture.mipLevels; i++)
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{
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VkImageBlit imageBlit{};
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// Source
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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(texture.width >> (i - 1));
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imageBlit.srcOffsets[1].y = int32_t(texture.height >> (i - 1));
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imageBlit.srcOffsets[1].z = 1;
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// Destination
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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(texture.width >> i);
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imageBlit.dstOffsets[1].y = int32_t(texture.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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// Prepare current mip level as image blit destination
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vks::tools::insertImageMemoryBarrier(
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blitCmd,
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texture.image,
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0,
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VK_ACCESS_TRANSFER_WRITE_BIT,
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VK_IMAGE_LAYOUT_UNDEFINED,
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VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL,
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VK_PIPELINE_STAGE_TRANSFER_BIT,
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VK_PIPELINE_STAGE_TRANSFER_BIT,
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mipSubRange);
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// Blit from previous level
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vkCmdBlitImage(
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blitCmd,
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texture.image,
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VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL,
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texture.image,
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VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL,
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1,
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&imageBlit,
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VK_FILTER_LINEAR);
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// Prepare current mip level as image blit source for next level
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vks::tools::insertImageMemoryBarrier(
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blitCmd,
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texture.image,
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VK_ACCESS_TRANSFER_WRITE_BIT,
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VK_ACCESS_TRANSFER_READ_BIT,
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VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL,
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VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL,
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VK_PIPELINE_STAGE_TRANSFER_BIT,
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VK_PIPELINE_STAGE_TRANSFER_BIT,
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mipSubRange);
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}
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// After the loop, all mip layers are in TRANSFER_SRC layout, so transition all to SHADER_READ
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subresourceRange.levelCount = texture.mipLevels;
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vks::tools::insertImageMemoryBarrier(
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blitCmd,
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texture.image,
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VK_ACCESS_TRANSFER_READ_BIT,
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VK_ACCESS_SHADER_READ_BIT,
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VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL,
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VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL,
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VK_PIPELINE_STAGE_TRANSFER_BIT,
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VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT,
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subresourceRange);
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vulkanDevice->flushCommandBuffer(blitCmd, queue, true);
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// ---------------------------------------------------------------
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// Create some samplers with different settings that can be selected via the UI
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samplers.resize(3);
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VkSamplerCreateInfo sampler = vks::initializers::samplerCreateInfo();
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sampler.magFilter = VK_FILTER_LINEAR;
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sampler.minFilter = VK_FILTER_LINEAR;
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sampler.mipmapMode = VK_SAMPLER_MIPMAP_MODE_LINEAR;
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sampler.addressModeU = VK_SAMPLER_ADDRESS_MODE_MIRRORED_REPEAT;
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sampler.addressModeV = VK_SAMPLER_ADDRESS_MODE_MIRRORED_REPEAT;
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sampler.addressModeW = VK_SAMPLER_ADDRESS_MODE_MIRRORED_REPEAT;
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sampler.mipLodBias = 0.0f;
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sampler.compareOp = VK_COMPARE_OP_NEVER;
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sampler.minLod = 0.0f;
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sampler.maxLod = 0.0f;
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sampler.borderColor = VK_BORDER_COLOR_FLOAT_OPAQUE_WHITE;
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sampler.maxAnisotropy = 1.0;
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sampler.anisotropyEnable = VK_FALSE;
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// Without mip mapping
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VK_CHECK_RESULT(vkCreateSampler(device, &sampler, nullptr, &samplers[0]));
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// With mip mapping
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sampler.maxLod = (float)texture.mipLevels;
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VK_CHECK_RESULT(vkCreateSampler(device, &sampler, nullptr, &samplers[1]));
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// With mip mapping and anisotropic filtering
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if (vulkanDevice->features.samplerAnisotropy)
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{
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sampler.maxAnisotropy = vulkanDevice->properties.limits.maxSamplerAnisotropy;
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sampler.anisotropyEnable = VK_TRUE;
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}
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VK_CHECK_RESULT(vkCreateSampler(device, &sampler, nullptr, &samplers[2]));
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// Create image view
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VkImageViewCreateInfo view = vks::initializers::imageViewCreateInfo();
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view.image = texture.image;
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view.viewType = VK_IMAGE_VIEW_TYPE_2D;
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view.format = format;
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view.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
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view.subresourceRange.baseMipLevel = 0;
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view.subresourceRange.baseArrayLayer = 0;
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view.subresourceRange.layerCount = 1;
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view.subresourceRange.levelCount = texture.mipLevels;
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VK_CHECK_RESULT(vkCreateImageView(device, &view, nullptr, &texture.view));
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}
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// Free all Vulkan resources used a texture object
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void destroyTextureImage(Texture texture)
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{
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vkDestroyImageView(device, texture.view, nullptr);
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vkDestroyImage(device, texture.image, nullptr);
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vkFreeMemory(device, texture.deviceMemory, nullptr);
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}
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void buildCommandBuffers()
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{
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VkCommandBufferBeginInfo cmdBufInfo = vks::initializers::commandBufferBeginInfo();
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VkClearValue clearValues[2];
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clearValues[0].color = defaultClearColor;
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clearValues[1].depthStencil = { 1.0f, 0 };
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VkRenderPassBeginInfo renderPassBeginInfo = vks::initializers::renderPassBeginInfo();
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renderPassBeginInfo.renderPass = renderPass;
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renderPassBeginInfo.renderArea.offset.x = 0;
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renderPassBeginInfo.renderArea.offset.y = 0;
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renderPassBeginInfo.renderArea.extent.width = width;
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renderPassBeginInfo.renderArea.extent.height = height;
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renderPassBeginInfo.clearValueCount = 2;
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renderPassBeginInfo.pClearValues = clearValues;
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for (int32_t i = 0; i < drawCmdBuffers.size(); ++i)
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{
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renderPassBeginInfo.framebuffer = frameBuffers[i];
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VK_CHECK_RESULT(vkBeginCommandBuffer(drawCmdBuffers[i], &cmdBufInfo));
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vkCmdBeginRenderPass(drawCmdBuffers[i], &renderPassBeginInfo, VK_SUBPASS_CONTENTS_INLINE);
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VkViewport viewport = vks::initializers::viewport((float)width, (float)height, 0.0f, 1.0f);
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vkCmdSetViewport(drawCmdBuffers[i], 0, 1, &viewport);
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VkRect2D scissor = vks::initializers::rect2D(width, height, 0, 0);
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vkCmdSetScissor(drawCmdBuffers[i], 0, 1, &scissor);
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vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSet, 0, NULL);
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vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline);
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model.draw(drawCmdBuffers[i]);
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drawUI(drawCmdBuffers[i]);
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vkCmdEndRenderPass(drawCmdBuffers[i]);
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VK_CHECK_RESULT(vkEndCommandBuffer(drawCmdBuffers[i]));
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}
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}
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void loadAssets()
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{
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model.loadFromFile(getAssetPath() + "models/tunnel_cylinder.gltf", vulkanDevice, queue, vkglTF::FileLoadingFlags::PreTransformVertices | vkglTF::FileLoadingFlags::FlipY);
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loadTextureAndGenerateMips(getAssetPath() + "textures/metalplate_nomips_rgba.ktx", VK_FORMAT_R8G8B8A8_UNORM);
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}
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void setupDescriptors()
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{
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// Pool
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std::vector<VkDescriptorPoolSize> poolSizes = {
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vks::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 1),
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vks::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE, 1),
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vks::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_SAMPLER, 3),
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|
};
|
|
VkDescriptorPoolCreateInfo descriptorPoolInfo = vks::initializers::descriptorPoolCreateInfo(poolSizes, 1);
|
|
VK_CHECK_RESULT(vkCreateDescriptorPool(device, &descriptorPoolInfo, nullptr, &descriptorPool));
|
|
|
|
// Layout
|
|
std::vector<VkDescriptorSetLayoutBinding> setLayoutBindings = {
|
|
// Binding 0: Vertex shader uniform buffer
|
|
vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, VK_SHADER_STAGE_VERTEX_BIT | VK_SHADER_STAGE_FRAGMENT_BIT, 0),
|
|
// Binding 1: Sampled image
|
|
vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE, VK_SHADER_STAGE_FRAGMENT_BIT, 1),
|
|
// Binding 2: Array with 3 samplers
|
|
vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_SAMPLER, VK_SHADER_STAGE_FRAGMENT_BIT, 2, 3),
|
|
};
|
|
VkDescriptorSetLayoutCreateInfo descriptorLayout = vks::initializers::descriptorSetLayoutCreateInfo(setLayoutBindings);
|
|
VK_CHECK_RESULT(vkCreateDescriptorSetLayout(device, &descriptorLayout, nullptr, &descriptorSetLayout));
|
|
|
|
// Sets
|
|
VkDescriptorSetAllocateInfo allocInfo = vks::initializers::descriptorSetAllocateInfo(descriptorPool, &descriptorSetLayout, 1);
|
|
VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &allocInfo, &descriptorSet));
|
|
|
|
VkDescriptorImageInfo textureDescriptor = vks::initializers::descriptorImageInfo(VK_NULL_HANDLE, texture.view, VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL);
|
|
std::vector<VkWriteDescriptorSet> writeDescriptorSets = {
|
|
// Binding 0: Vertex shader uniform buffer
|
|
vks::initializers::writeDescriptorSet(descriptorSet, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 0, &uniformBuffer.descriptor),
|
|
// Binding 1: Sampled image
|
|
vks::initializers::writeDescriptorSet(descriptorSet, VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE, 1, &textureDescriptor)
|
|
};
|
|
|
|
// Binding 2: Contains an array of samplers that can be switched from the UI to demonstrate different filteirng modes
|
|
std::vector<VkDescriptorImageInfo> samplerDescriptors;
|
|
for (auto i = 0; i < samplers.size(); i++) {
|
|
samplerDescriptors.push_back(vks::initializers::descriptorImageInfo(samplers[i], VK_NULL_HANDLE, VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL));
|
|
}
|
|
VkWriteDescriptorSet samplerDescriptorWrite{};
|
|
samplerDescriptorWrite.sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
|
|
samplerDescriptorWrite.dstSet = descriptorSet;
|
|
samplerDescriptorWrite.descriptorType = VK_DESCRIPTOR_TYPE_SAMPLER;
|
|
samplerDescriptorWrite.descriptorCount = static_cast<uint32_t>(samplerDescriptors.size());
|
|
samplerDescriptorWrite.pImageInfo = samplerDescriptors.data();
|
|
samplerDescriptorWrite.dstBinding = 2;
|
|
samplerDescriptorWrite.dstArrayElement = 0;
|
|
writeDescriptorSets.push_back(samplerDescriptorWrite);
|
|
vkUpdateDescriptorSets(device, static_cast<uint32_t>(writeDescriptorSets.size()), writeDescriptorSets.data(), 0, nullptr);
|
|
}
|
|
|
|
void preparePipelines()
|
|
{
|
|
// Layout
|
|
VkPipelineLayoutCreateInfo pipelineLayoutCreateInfo = vks::initializers::pipelineLayoutCreateInfo(&descriptorSetLayout, 1);
|
|
VK_CHECK_RESULT(vkCreatePipelineLayout(device, &pipelineLayoutCreateInfo, nullptr, &pipelineLayout));
|
|
|
|
// Pipeline
|
|
VkPipelineInputAssemblyStateCreateInfo inputAssemblyState = vks::initializers::pipelineInputAssemblyStateCreateInfo(VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST, 0, VK_FALSE);
|
|
VkPipelineRasterizationStateCreateInfo rasterizationState = vks::initializers::pipelineRasterizationStateCreateInfo(VK_POLYGON_MODE_FILL, VK_CULL_MODE_BACK_BIT, VK_FRONT_FACE_COUNTER_CLOCKWISE, 0);
|
|
VkPipelineColorBlendAttachmentState blendAttachmentState = vks::initializers::pipelineColorBlendAttachmentState(0xf, VK_FALSE);
|
|
VkPipelineColorBlendStateCreateInfo colorBlendState = vks::initializers::pipelineColorBlendStateCreateInfo(1, &blendAttachmentState);
|
|
VkPipelineDepthStencilStateCreateInfo depthStencilState = vks::initializers::pipelineDepthStencilStateCreateInfo(VK_TRUE, VK_TRUE, VK_COMPARE_OP_LESS_OR_EQUAL);
|
|
VkPipelineViewportStateCreateInfo viewportState = vks::initializers::pipelineViewportStateCreateInfo(1, 1, 0);
|
|
VkPipelineMultisampleStateCreateInfo multisampleState = vks::initializers::pipelineMultisampleStateCreateInfo(VK_SAMPLE_COUNT_1_BIT, 0);
|
|
std::vector<VkDynamicState> dynamicStateEnables = { VK_DYNAMIC_STATE_VIEWPORT, VK_DYNAMIC_STATE_SCISSOR };
|
|
VkPipelineDynamicStateCreateInfo dynamicState = vks::initializers::pipelineDynamicStateCreateInfo(dynamicStateEnables);
|
|
std::array<VkPipelineShaderStageCreateInfo,2> shaderStages;
|
|
|
|
shaderStages[0] = loadShader(getShadersPath() + "texturemipmapgen/texture.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
|
|
shaderStages[1] = loadShader(getShadersPath() + "texturemipmapgen/texture.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
|
|
|
|
VkGraphicsPipelineCreateInfo pipelineCI = vks::initializers::pipelineCreateInfo(pipelineLayout, renderPass, 0);
|
|
pipelineCI.pInputAssemblyState = &inputAssemblyState;
|
|
pipelineCI.pRasterizationState = &rasterizationState;
|
|
pipelineCI.pColorBlendState = &colorBlendState;
|
|
pipelineCI.pMultisampleState = &multisampleState;
|
|
pipelineCI.pViewportState = &viewportState;
|
|
pipelineCI.pDepthStencilState = &depthStencilState;
|
|
pipelineCI.pDynamicState = &dynamicState;
|
|
pipelineCI.stageCount = static_cast<uint32_t>(shaderStages.size());
|
|
pipelineCI.pStages = shaderStages.data();
|
|
pipelineCI.pVertexInputState = vkglTF::Vertex::getPipelineVertexInputState({ vkglTF::VertexComponent::Position, vkglTF::VertexComponent::UV, vkglTF::VertexComponent::Normal });
|
|
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCI, nullptr, &pipeline));
|
|
}
|
|
|
|
// Prepare and initialize uniform buffer containing shader uniforms
|
|
void prepareUniformBuffers()
|
|
{
|
|
VK_CHECK_RESULT(vulkanDevice->createBuffer(VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT, &uniformBuffer, sizeof(UniformData), &uniformData));
|
|
VK_CHECK_RESULT(uniformBuffer.map());
|
|
}
|
|
|
|
void updateUniformBuffers()
|
|
{
|
|
uniformData.projection = camera.matrices.perspective;
|
|
uniformData.view = camera.matrices.view;
|
|
uniformData.model = glm::rotate(glm::mat4(1.0f), glm::radians(timer * 360.0f), glm::vec3(1.0f, 0.0f, 0.0f));
|
|
uniformData.viewPos = glm::vec4(camera.position, 0.0f) * glm::vec4(-1.0f);
|
|
memcpy(uniformBuffer.mapped, &uniformData, sizeof(uniformData));
|
|
}
|
|
|
|
void draw()
|
|
{
|
|
VulkanExampleBase::prepareFrame();
|
|
submitInfo.commandBufferCount = 1;
|
|
submitInfo.pCommandBuffers = &drawCmdBuffers[currentBuffer];
|
|
VK_CHECK_RESULT(vkQueueSubmit(queue, 1, &submitInfo, VK_NULL_HANDLE));
|
|
VulkanExampleBase::submitFrame();
|
|
}
|
|
|
|
void prepare()
|
|
{
|
|
VulkanExampleBase::prepare();
|
|
loadAssets();
|
|
prepareUniformBuffers();
|
|
setupDescriptors();
|
|
preparePipelines();
|
|
buildCommandBuffers();
|
|
prepared = true;
|
|
}
|
|
|
|
virtual void render()
|
|
{
|
|
if (!prepared)
|
|
return;
|
|
updateUniformBuffers();
|
|
draw();
|
|
}
|
|
|
|
virtual void OnUpdateUIOverlay(vks::UIOverlay *overlay)
|
|
{
|
|
if (overlay->header("Settings")) {
|
|
if (overlay->sliderFloat("LOD bias", &uniformData.lodBias, 0.0f, (float)texture.mipLevels)) {
|
|
updateUniformBuffers();
|
|
}
|
|
if (overlay->comboBox("Sampler type", &uniformData.samplerIndex, samplerNames)) {
|
|
updateUniformBuffers();
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
VULKAN_EXAMPLE_MAIN()
|