652 lines
25 KiB
C++
652 lines
25 KiB
C++
/*
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* Vulkan Example - 3D texture loading (and generation using perlin noise) example
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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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// Vertex layout for this example
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struct Vertex {
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float pos[3];
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float uv[2];
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float normal[3];
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};
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// Translation of Ken Perlin's JAVA implementation (http://mrl.nyu.edu/~perlin/noise/)
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template <typename T>
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class PerlinNoise
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{
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private:
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uint32_t permutations[512];
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T fade(T t)
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{
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return t * t * t * (t * (t * (T)6 - (T)15) + (T)10);
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}
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T lerp(T t, T a, T b)
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{
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return a + t * (b - a);
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}
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T grad(int hash, T x, T y, T z)
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{
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// Convert LO 4 bits of hash code into 12 gradient directions
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int h = hash & 15;
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T u = h < 8 ? x : y;
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T v = h < 4 ? y : h == 12 || h == 14 ? x : z;
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return ((h & 1) == 0 ? u : -u) + ((h & 2) == 0 ? v : -v);
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}
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public:
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PerlinNoise()
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{
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// Generate random lookup for permutations containing all numbers from 0..255
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std::vector<uint8_t> plookup;
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plookup.resize(256);
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std::iota(plookup.begin(), plookup.end(), 0);
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std::default_random_engine rndEngine(std::random_device{}());
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std::shuffle(plookup.begin(), plookup.end(), rndEngine);
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for (uint32_t i = 0; i < 256; i++)
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{
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permutations[i] = permutations[256 + i] = plookup[i];
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}
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}
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T noise(T x, T y, T z)
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{
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// Find unit cube that contains point
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int32_t X = (int32_t)floor(x) & 255;
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int32_t Y = (int32_t)floor(y) & 255;
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int32_t Z = (int32_t)floor(z) & 255;
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// Find relative x,y,z of point in cube
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x -= floor(x);
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y -= floor(y);
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z -= floor(z);
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// Compute fade curves for each of x,y,z
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T u = fade(x);
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T v = fade(y);
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T w = fade(z);
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// Hash coordinates of the 8 cube corners
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uint32_t A = permutations[X] + Y;
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uint32_t AA = permutations[A] + Z;
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uint32_t AB = permutations[A + 1] + Z;
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uint32_t B = permutations[X + 1] + Y;
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uint32_t BA = permutations[B] + Z;
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uint32_t BB = permutations[B + 1] + Z;
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// And add blended results for 8 corners of the cube;
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T res = lerp(w, lerp(v,
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lerp(u, grad(permutations[AA], x, y, z), grad(permutations[BA], x - 1, y, z)), lerp(u, grad(permutations[AB], x, y - 1, z), grad(permutations[BB], x - 1, y - 1, z))),
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lerp(v, lerp(u, grad(permutations[AA + 1], x, y, z - 1), grad(permutations[BA + 1], x - 1, y, z - 1)), lerp(u, grad(permutations[AB + 1], x, y - 1, z - 1), grad(permutations[BB + 1], x - 1, y - 1, z - 1))));
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return res;
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}
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};
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// Fractal noise generator based on perlin noise above
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template <typename T>
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class FractalNoise
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{
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private:
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PerlinNoise<float> perlinNoise;
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uint32_t octaves;
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T frequency;
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T amplitude;
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T persistence;
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public:
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FractalNoise(const PerlinNoise<T> &perlinNoise)
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{
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this->perlinNoise = perlinNoise;
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octaves = 6;
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persistence = (T)0.5;
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}
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T noise(T x, T y, T z)
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{
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T sum = 0;
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T frequency = (T)1;
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T amplitude = (T)1;
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T max = (T)0;
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for (uint32_t i = 0; i < octaves; i++)
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{
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sum += perlinNoise.noise(x * frequency, y * frequency, z * frequency) * amplitude;
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max += amplitude;
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amplitude *= persistence;
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frequency *= (T)2;
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}
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sum = sum / max;
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return (sum + (T)1.0) / (T)2.0;
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}
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};
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class VulkanExample : public VulkanExampleBase
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{
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public:
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// Contains all Vulkan objects that are required to store and use a 3D texture
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struct Texture {
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VkSampler sampler = VK_NULL_HANDLE;
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VkImage image = VK_NULL_HANDLE;
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VkImageLayout imageLayout;
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VkDeviceMemory deviceMemory = VK_NULL_HANDLE;
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VkImageView view = VK_NULL_HANDLE;
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VkDescriptorImageInfo descriptor;
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VkFormat format;
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uint32_t width{ 0 };
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uint32_t height{ 0 };
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uint32_t depth{ 0 };
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uint32_t mipLevels{ 0 };
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} texture;
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vks::Buffer vertexBuffer;
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vks::Buffer indexBuffer;
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uint32_t indexCount{ 0 };
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struct UniformData {
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glm::mat4 projection;
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glm::mat4 modelView;
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glm::vec4 viewPos;
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// The current depth level of the texture to display
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// This is animated
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float depth = 0.0f;
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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 = "3D textures";
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camera.type = Camera::CameraType::lookat;
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camera.setPosition(glm::vec3(0.0f, 0.0f, -2.5f));
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camera.setRotation(glm::vec3(0.0f, 15.0f, 0.0f));
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camera.setPerspective(60.0f, (float)width / (float)height, 0.1f, 256.0f);
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srand((unsigned int)time(NULL));
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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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vertexBuffer.destroy();
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indexBuffer.destroy();
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uniformBuffer.destroy();
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}
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}
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// Prepare all Vulkan resources for the 3D texture (including descriptors)
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// Does not fill the texture with data
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void prepareNoiseTexture(uint32_t width, uint32_t height, uint32_t depth)
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{
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// A 3D texture is described as width x height x depth
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texture.width = width;
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texture.height = height;
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texture.depth = depth;
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texture.mipLevels = 1;
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texture.format = VK_FORMAT_R8_UNORM;
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// Format support check
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// 3D texture support in Vulkan is mandatory (in contrast to OpenGL) so no need to check if it's supported
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VkFormatProperties formatProperties;
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vkGetPhysicalDeviceFormatProperties(physicalDevice, texture.format, &formatProperties);
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// Check if format supports transfer
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if (!(formatProperties.optimalTilingFeatures & VK_FORMAT_FEATURE_TRANSFER_DST_BIT))
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{
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std::cout << "Error: Device does not support flag TRANSFER_DST for selected texture format!" << std::endl;
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return;
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}
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// Check if GPU supports requested 3D texture dimensions
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uint32_t maxImageDimension3D(vulkanDevice->properties.limits.maxImageDimension3D);
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if (width > maxImageDimension3D || height > maxImageDimension3D || depth > maxImageDimension3D)
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{
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std::cout << "Error: Requested texture dimensions is greater than supported 3D texture dimension!" << std::endl;
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return;
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}
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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_3D;
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imageCreateInfo.format = texture.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.extent.width = texture.width;
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imageCreateInfo.extent.height = texture.height;
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imageCreateInfo.extent.depth = texture.depth;
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// Set initial layout of the image to undefined
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imageCreateInfo.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
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imageCreateInfo.usage = VK_IMAGE_USAGE_TRANSFER_DST_BIT | VK_IMAGE_USAGE_SAMPLED_BIT;
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VK_CHECK_RESULT(vkCreateImage(device, &imageCreateInfo, nullptr, &texture.image));
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// Device local memory to back up image
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VkMemoryAllocateInfo memAllocInfo = vks::initializers::memoryAllocateInfo();
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VkMemoryRequirements memReqs = {};
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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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// Create sampler
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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_CLAMP_TO_EDGE;
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sampler.addressModeV = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
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sampler.addressModeW = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
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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.maxAnisotropy = 1.0;
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sampler.anisotropyEnable = VK_FALSE;
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sampler.borderColor = VK_BORDER_COLOR_FLOAT_OPAQUE_WHITE;
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VK_CHECK_RESULT(vkCreateSampler(device, &sampler, nullptr, &texture.sampler));
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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_3D;
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view.format = texture.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 = 1;
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VK_CHECK_RESULT(vkCreateImageView(device, &view, nullptr, &texture.view));
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// Fill image descriptor image info to be used descriptor set setup
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texture.descriptor.imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
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texture.descriptor.imageView = texture.view;
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texture.descriptor.sampler = texture.sampler;
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updateNoiseTexture();
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}
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// Generate randomized noise and upload it to the 3D texture using staging
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void updateNoiseTexture()
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{
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const uint32_t texMemSize = texture.width * texture.height * texture.depth;
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uint8_t *data = new uint8_t[texMemSize];
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memset(data, 0, texMemSize);
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// Generate perlin based noise
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std::cout << "Generating " << texture.width << " x " << texture.height << " x " << texture.depth << " noise texture..." << std::endl;
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auto tStart = std::chrono::high_resolution_clock::now();
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PerlinNoise<float> perlinNoise;
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FractalNoise<float> fractalNoise(perlinNoise);
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const float noiseScale = static_cast<float>(rand() % 10) + 4.0f;
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#pragma omp parallel for
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for (int32_t z = 0; z < static_cast<int32_t>(texture.depth); z++)
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{
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for (int32_t y = 0; y < static_cast<int32_t>(texture.height); y++)
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{
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for (int32_t x = 0; x < static_cast<int32_t>(texture.width); x++)
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{
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float nx = (float)x / (float)texture.width;
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float ny = (float)y / (float)texture.height;
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float nz = (float)z / (float)texture.depth;
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float n = fractalNoise.noise(nx * noiseScale, ny * noiseScale, nz * noiseScale);
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n = n - floor(n);
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data[x + y * texture.width + z * texture.width * texture.height] = static_cast<uint8_t>(floor(n * 255));
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}
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}
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}
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auto tEnd = std::chrono::high_resolution_clock::now();
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auto tDiff = std::chrono::duration<double, std::milli>(tEnd - tStart).count();
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std::cout << "Done in " << tDiff << "ms" << std::endl;
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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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// Buffer object
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VkBufferCreateInfo bufferCreateInfo = vks::initializers::bufferCreateInfo();
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bufferCreateInfo.size = texMemSize;
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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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// Allocate host visible memory for data upload
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VkMemoryAllocateInfo memAllocInfo = vks::initializers::memoryAllocateInfo();
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VkMemoryRequirements memReqs = {};
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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 *mapped;
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VK_CHECK_RESULT(vkMapMemory(device, stagingMemory, 0, memReqs.size, 0, (void **)&mapped));
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memcpy(mapped, data, texMemSize);
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vkUnmapMemory(device, stagingMemory);
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VkCommandBuffer copyCmd = vulkanDevice->createCommandBuffer(VK_COMMAND_BUFFER_LEVEL_PRIMARY, true);
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// The sub resource range describes the regions of the image we will be transitioned
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VkImageSubresourceRange subresourceRange = {};
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subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
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subresourceRange.baseMipLevel = 0;
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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
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// initial undefined image layout to the transfer destination layout
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vks::tools::setImageLayout(
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copyCmd,
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texture.image,
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VK_IMAGE_LAYOUT_UNDEFINED,
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VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL,
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subresourceRange);
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// Copy 3D noise data to texture
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// Setup buffer copy regions
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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 = texture.depth;
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vkCmdCopyBufferToImage(
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copyCmd,
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stagingBuffer,
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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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&bufferCopyRegion);
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// Change texture image layout to shader read after all mip levels have been copied
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texture.imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
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vks::tools::setImageLayout(
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copyCmd,
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texture.image,
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VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL,
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texture.imageLayout,
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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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delete[] data;
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vkFreeMemory(device, stagingMemory, nullptr);
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vkDestroyBuffer(device, stagingBuffer, nullptr);
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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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if (texture.view != VK_NULL_HANDLE)
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vkDestroyImageView(device, texture.view, nullptr);
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if (texture.image != VK_NULL_HANDLE)
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vkDestroyImage(device, texture.image, nullptr);
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if (texture.sampler != VK_NULL_HANDLE)
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vkDestroySampler(device, texture.sampler, nullptr);
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if (texture.deviceMemory != VK_NULL_HANDLE)
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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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// Set target frame buffer
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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);
|
|
|
|
VkDeviceSize offsets[1] = { 0 };
|
|
vkCmdBindVertexBuffers(drawCmdBuffers[i], 0, 1, &vertexBuffer.buffer, offsets);
|
|
vkCmdBindIndexBuffer(drawCmdBuffers[i], indexBuffer.buffer, 0, VK_INDEX_TYPE_UINT32);
|
|
vkCmdDrawIndexed(drawCmdBuffers[i], indexCount, 1, 0, 0, 0);
|
|
|
|
drawUI(drawCmdBuffers[i]);
|
|
|
|
vkCmdEndRenderPass(drawCmdBuffers[i]);
|
|
|
|
VK_CHECK_RESULT(vkEndCommandBuffer(drawCmdBuffers[i]));
|
|
}
|
|
}
|
|
|
|
// Creates a vertex and index buffer for a quad made of two triangles
|
|
// This is used to display the texture on
|
|
void generateQuad()
|
|
{
|
|
// Setup vertices for a single uv-mapped quad made from two triangles
|
|
std::vector<Vertex> vertices =
|
|
{
|
|
{ { 1.0f, 1.0f, 0.0f }, { 1.0f, 1.0f },{ 0.0f, 0.0f, 1.0f } },
|
|
{ { -1.0f, 1.0f, 0.0f }, { 0.0f, 1.0f },{ 0.0f, 0.0f, 1.0f } },
|
|
{ { -1.0f, -1.0f, 0.0f }, { 0.0f, 0.0f },{ 0.0f, 0.0f, 1.0f } },
|
|
{ { 1.0f, -1.0f, 0.0f }, { 1.0f, 0.0f },{ 0.0f, 0.0f, 1.0f } }
|
|
};
|
|
|
|
// Setup indices
|
|
std::vector<uint32_t> indices = { 0,1,2, 2,3,0 };
|
|
indexCount = static_cast<uint32_t>(indices.size());
|
|
|
|
// Create buffers and upload data to the GPU
|
|
struct StagingBuffers {
|
|
vks::Buffer vertices;
|
|
vks::Buffer indices;
|
|
} stagingBuffers;
|
|
|
|
// Host visible source buffers (staging)
|
|
VK_CHECK_RESULT(vulkanDevice->createBuffer(VK_BUFFER_USAGE_TRANSFER_SRC_BIT, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT, &stagingBuffers.vertices, vertices.size() * sizeof(Vertex), vertices.data()));
|
|
VK_CHECK_RESULT(vulkanDevice->createBuffer(VK_BUFFER_USAGE_TRANSFER_SRC_BIT, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT, &stagingBuffers.indices, indices.size() * sizeof(uint32_t), indices.data()));
|
|
|
|
// Device local destination buffers
|
|
VK_CHECK_RESULT(vulkanDevice->createBuffer(VK_BUFFER_USAGE_VERTEX_BUFFER_BIT | VK_BUFFER_USAGE_TRANSFER_DST_BIT, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, &vertexBuffer, vertices.size() * sizeof(Vertex)));
|
|
VK_CHECK_RESULT(vulkanDevice->createBuffer(VK_BUFFER_USAGE_INDEX_BUFFER_BIT | VK_BUFFER_USAGE_TRANSFER_DST_BIT, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, &indexBuffer, indices.size() * sizeof(uint32_t)));
|
|
|
|
// Copy from host do device
|
|
vulkanDevice->copyBuffer(&stagingBuffers.vertices, &vertexBuffer, queue);
|
|
vulkanDevice->copyBuffer(&stagingBuffers.indices, &indexBuffer, queue);
|
|
|
|
// Clean up
|
|
stagingBuffers.vertices.destroy();
|
|
stagingBuffers.indices.destroy();
|
|
}
|
|
|
|
void setupDescriptors()
|
|
{
|
|
// Pool
|
|
std::vector<VkDescriptorPoolSize> poolSizes = {
|
|
vks::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 1),
|
|
vks::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1)
|
|
};
|
|
VkDescriptorPoolCreateInfo descriptorPoolInfo = vks::initializers::descriptorPoolCreateInfo(poolSizes, 2);
|
|
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, 0),
|
|
// Binding 1 : Fragment shader image sampler
|
|
vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, VK_SHADER_STAGE_FRAGMENT_BIT, 1)
|
|
};
|
|
VkDescriptorSetLayoutCreateInfo descriptorLayout = vks::initializers::descriptorSetLayoutCreateInfo(setLayoutBindings);
|
|
VK_CHECK_RESULT(vkCreateDescriptorSetLayout(device, &descriptorLayout, nullptr, &descriptorSetLayout));
|
|
|
|
// Set
|
|
VkDescriptorSetAllocateInfo allocInfo = vks::initializers::descriptorSetAllocateInfo(descriptorPool, &descriptorSetLayout, 1);
|
|
VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &allocInfo, &descriptorSet));
|
|
|
|
// Image descriptor for the 3D texture
|
|
VkDescriptorImageInfo textureDescriptor =
|
|
vks::initializers::descriptorImageInfo(
|
|
texture.sampler,
|
|
texture.view,
|
|
texture.imageLayout);
|
|
|
|
std::vector<VkWriteDescriptorSet> writeDescriptorSets = {
|
|
// Binding 0 : Vertex shader uniform buffer
|
|
vks::initializers::writeDescriptorSet(descriptorSet, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 0, &uniformBuffer.descriptor),
|
|
// Binding 1 : Fragment shader texture sampler
|
|
vks::initializers::writeDescriptorSet(descriptorSet, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1, &textureDescriptor)
|
|
};
|
|
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_NONE, 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;
|
|
|
|
// Shaders
|
|
shaderStages[0] = loadShader(getShadersPath() + "texture3d/texture3d.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
|
|
shaderStages[1] = loadShader(getShadersPath() + "texture3d/texture3d.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
|
|
|
|
// Vertex input state
|
|
std::vector<VkVertexInputBindingDescription> vertexInputBindings = {
|
|
vks::initializers::vertexInputBindingDescription(0, sizeof(Vertex), VK_VERTEX_INPUT_RATE_VERTEX)
|
|
};
|
|
std::vector<VkVertexInputAttributeDescription> vertexInputAttributes = {
|
|
vks::initializers::vertexInputAttributeDescription(0, 0, VK_FORMAT_R32G32B32_SFLOAT, offsetof(Vertex, pos)),
|
|
vks::initializers::vertexInputAttributeDescription(0, 1, VK_FORMAT_R32G32_SFLOAT, offsetof(Vertex, uv)),
|
|
vks::initializers::vertexInputAttributeDescription(0, 2, VK_FORMAT_R32G32B32_SFLOAT, offsetof(Vertex, normal)),
|
|
};
|
|
VkPipelineVertexInputStateCreateInfo vertexInputState = vks::initializers::pipelineVertexInputStateCreateInfo();
|
|
vertexInputState.vertexBindingDescriptionCount = static_cast<uint32_t>(vertexInputBindings.size());
|
|
vertexInputState.pVertexBindingDescriptions = vertexInputBindings.data();
|
|
vertexInputState.vertexAttributeDescriptionCount = static_cast<uint32_t>(vertexInputAttributes.size());
|
|
vertexInputState.pVertexAttributeDescriptions = vertexInputAttributes.data();
|
|
|
|
VkGraphicsPipelineCreateInfo pipelineCreateInfo = vks::initializers::pipelineCreateInfo(pipelineLayout, renderPass, 0);
|
|
pipelineCreateInfo.pVertexInputState = &vertexInputState;
|
|
pipelineCreateInfo.pInputAssemblyState = &inputAssemblyState;
|
|
pipelineCreateInfo.pRasterizationState = &rasterizationState;
|
|
pipelineCreateInfo.pColorBlendState = &colorBlendState;
|
|
pipelineCreateInfo.pMultisampleState = &multisampleState;
|
|
pipelineCreateInfo.pViewportState = &viewportState;
|
|
pipelineCreateInfo.pDepthStencilState = &depthStencilState;
|
|
pipelineCreateInfo.pDynamicState = &dynamicState;
|
|
pipelineCreateInfo.stageCount = static_cast<uint32_t>(shaderStages.size());
|
|
pipelineCreateInfo.pStages = shaderStages.data();
|
|
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCreateInfo, nullptr, &pipeline));
|
|
}
|
|
|
|
// Prepare and initialize uniform buffer containing shader uniforms
|
|
void prepareUniformBuffers()
|
|
{
|
|
// Vertex shader uniform buffer block
|
|
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.modelView = camera.matrices.view;
|
|
uniformData.viewPos = camera.viewPos;
|
|
if (!paused) {
|
|
// Animate depth
|
|
uniformData.depth += frameTimer * 0.15f;
|
|
if (uniformData.depth > 1.0f) {
|
|
uniformData.depth = uniformData.depth - 1.0f;
|
|
}
|
|
}
|
|
memcpy(uniformBuffer.mapped, &uniformData, sizeof(UniformData));
|
|
}
|
|
|
|
void prepare()
|
|
{
|
|
VulkanExampleBase::prepare();
|
|
generateQuad();
|
|
prepareUniformBuffers();
|
|
prepareNoiseTexture(128, 128, 128);
|
|
setupDescriptors();
|
|
preparePipelines();
|
|
buildCommandBuffers();
|
|
prepared = true;
|
|
}
|
|
|
|
void draw()
|
|
{
|
|
VulkanExampleBase::prepareFrame();
|
|
submitInfo.commandBufferCount = 1;
|
|
submitInfo.pCommandBuffers = &drawCmdBuffers[currentBuffer];
|
|
VK_CHECK_RESULT(vkQueueSubmit(queue, 1, &submitInfo, VK_NULL_HANDLE));
|
|
VulkanExampleBase::submitFrame();
|
|
}
|
|
|
|
virtual void render()
|
|
{
|
|
if (!prepared)
|
|
return;
|
|
updateUniformBuffers();
|
|
draw();
|
|
}
|
|
|
|
virtual void OnUpdateUIOverlay(vks::UIOverlay *overlay)
|
|
{
|
|
if (overlay->header("Settings")) {
|
|
if (overlay->button("Generate new texture")) {
|
|
updateNoiseTexture();
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
VULKAN_EXAMPLE_MAIN()
|