317 lines
No EOL
12 KiB
C++
317 lines
No EOL
12 KiB
C++
/*
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* Vulkan Example - Parallax Mapping
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*
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* Copyright (C) 2016 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 <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <assert.h>
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#include <vector>
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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/matrix_inverse.hpp>
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#include <vulkan/vulkan.h>
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#include "vulkanexamplebase.h"
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#include "VulkanTexture.hpp"
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#include "VulkanglTFModel.h"
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#define ENABLE_VALIDATION false
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class VulkanExample : public VulkanExampleBase
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{
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public:
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struct {
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vks::Texture2D colorMap;
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// Normals and height are combined into one texture (height = alpha channel)
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vks::Texture2D normalHeightMap;
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} textures;
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vkglTF::Model plane;
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struct {
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vks::Buffer vertexShader;
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vks::Buffer fragmentShader;
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} uniformBuffers;
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struct {
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struct {
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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 lightPos = glm::vec4(0.0f, -2.0f, 0.0f, 1.0f);
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glm::vec4 cameraPos;
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} vertexShader;
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struct {
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float heightScale = 0.1f;
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// Basic parallax mapping needs a bias to look any good (and is hard to tweak)
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float parallaxBias = -0.02f;
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// Number of layers for steep parallax and parallax occlusion (more layer = better result for less performance)
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float numLayers = 48.0f;
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// (Parallax) mapping mode to use
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int32_t mappingMode = 4;
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} fragmentShader;
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} ubos;
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VkPipelineLayout pipelineLayout;
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VkPipeline pipeline;
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VkDescriptorSetLayout descriptorSetLayout;
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VkDescriptorSet descriptorSet;
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const std::vector<std::string> mappingModes = {
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"Color only",
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"Normal mapping",
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"Parallax mapping",
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"Steep parallax mapping",
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"Parallax occlusion mapping",
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};
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VulkanExample() : VulkanExampleBase(ENABLE_VALIDATION)
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{
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title = "Parallax Mapping";
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timerSpeed *= 0.5f;
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camera.type = Camera::CameraType::firstperson;
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camera.setPosition(glm::vec3(0.0f, 1.25f, -1.5f));
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camera.setRotation(glm::vec3(-45.0f, 0.0f, 0.0f));
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camera.setPerspective(60.0f, (float)width / (float)height, 0.1f, 256.0f);
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settings.overlay = true;
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}
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~VulkanExample()
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{
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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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uniformBuffers.vertexShader.destroy();
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uniformBuffers.fragmentShader.destroy();
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textures.colorMap.destroy();
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textures.normalHeightMap.destroy();
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}
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void loadAssets()
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{
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const uint32_t glTFLoadingFlags = vkglTF::FileLoadingFlags::PreTransformVertices | vkglTF::FileLoadingFlags::PreMultiplyVertexColors | vkglTF::FileLoadingFlags::FlipY;
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plane.loadFromFile(getAssetPath() + "models/plane.gltf", vulkanDevice, queue, glTFLoadingFlags);
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textures.normalHeightMap.loadFromFile(getAssetPath() + "textures/rocks_normal_height_rgba.ktx", VK_FORMAT_R8G8B8A8_UNORM, vulkanDevice, queue);
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textures.colorMap.loadFromFile(getAssetPath() + "textures/rocks_color_rgba.ktx", VK_FORMAT_R8G8B8A8_UNORM, vulkanDevice, queue);
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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);
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plane.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 setupDescriptorPool()
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{
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// Example uses two ubos and two image sampler
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std::vector<VkDescriptorPoolSize> poolSizes =
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{
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vks::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 2),
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vks::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 2)
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};
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VkDescriptorPoolCreateInfo descriptorPoolInfo =
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vks::initializers::descriptorPoolCreateInfo(poolSizes, 2);
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VK_CHECK_RESULT(vkCreateDescriptorPool(device, &descriptorPoolInfo, nullptr, &descriptorPool));
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}
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void setupDescriptorSetLayout()
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{
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std::vector<VkDescriptorSetLayoutBinding> setLayoutBindings = {
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vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, VK_SHADER_STAGE_VERTEX_BIT, 0), // Binding 0: Vertex shader uniform buffer
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vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, VK_SHADER_STAGE_FRAGMENT_BIT, 1), // Binding 1: Fragment shader color map image sampler
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vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, VK_SHADER_STAGE_FRAGMENT_BIT, 2), // Binding 2: Fragment combined normal and heightmap
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vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, VK_SHADER_STAGE_FRAGMENT_BIT, 3), // Binding 3: Fragment shader uniform buffer
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};
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VkDescriptorSetLayoutCreateInfo descriptorLayout = vks::initializers::descriptorSetLayoutCreateInfo(setLayoutBindings);
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VK_CHECK_RESULT(vkCreateDescriptorSetLayout(device, &descriptorLayout, nullptr, &descriptorSetLayout));
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VkPipelineLayoutCreateInfo pPipelineLayoutCreateInfo = vks::initializers::pipelineLayoutCreateInfo(&descriptorSetLayout, 1);
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VK_CHECK_RESULT(vkCreatePipelineLayout(device, &pPipelineLayoutCreateInfo, nullptr, &pipelineLayout));
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}
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void setupDescriptorSet()
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{
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VkDescriptorSetAllocateInfo allocInfo = vks::initializers::descriptorSetAllocateInfo(descriptorPool, &descriptorSetLayout, 1);
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VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &allocInfo, &descriptorSet));
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std::vector<VkWriteDescriptorSet> writeDescriptorSets = {
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vks::initializers::writeDescriptorSet(descriptorSet, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 0, &uniformBuffers.vertexShader.descriptor), // Binding 0: Vertex shader uniform buffer
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vks::initializers::writeDescriptorSet(descriptorSet, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1, &textures.colorMap.descriptor), // Binding 1: Fragment shader image sampler
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vks::initializers::writeDescriptorSet(descriptorSet, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 2, &textures.normalHeightMap.descriptor), // Binding 2: Combined normal and heightmap
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vks::initializers::writeDescriptorSet(descriptorSet, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 3, &uniformBuffers.fragmentShader.descriptor), // Binding 3: Fragment shader uniform buffer
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};
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vkUpdateDescriptorSets(device, static_cast<uint32_t>(writeDescriptorSets.size()), writeDescriptorSets.data(), 0, NULL);
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}
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void preparePipelines()
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{
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VkPipelineInputAssemblyStateCreateInfo inputAssemblyState = vks::initializers::pipelineInputAssemblyStateCreateInfo(VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST, 0, VK_FALSE);
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VkPipelineRasterizationStateCreateInfo rasterizationState = vks::initializers::pipelineRasterizationStateCreateInfo(VK_POLYGON_MODE_FILL, VK_CULL_MODE_NONE, VK_FRONT_FACE_COUNTER_CLOCKWISE);
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VkPipelineColorBlendAttachmentState blendAttachmentState = vks::initializers::pipelineColorBlendAttachmentState(0xf, VK_FALSE);
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VkPipelineColorBlendStateCreateInfo colorBlendState = vks::initializers::pipelineColorBlendStateCreateInfo(1, &blendAttachmentState);
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VkPipelineDepthStencilStateCreateInfo depthStencilState = vks::initializers::pipelineDepthStencilStateCreateInfo(VK_TRUE, VK_TRUE, VK_COMPARE_OP_LESS_OR_EQUAL);
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VkPipelineViewportStateCreateInfo viewportState = vks::initializers::pipelineViewportStateCreateInfo(1, 1, 0);
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VkPipelineMultisampleStateCreateInfo multisampleState = vks::initializers::pipelineMultisampleStateCreateInfo(VK_SAMPLE_COUNT_1_BIT);
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std::vector<VkDynamicState> dynamicStateEnables = {VK_DYNAMIC_STATE_VIEWPORT, VK_DYNAMIC_STATE_SCISSOR};
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VkPipelineDynamicStateCreateInfo dynamicState = vks::initializers::pipelineDynamicStateCreateInfo(dynamicStateEnables);
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std::array<VkPipelineShaderStageCreateInfo, 2> shaderStages;
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VkGraphicsPipelineCreateInfo pipelineCI = vks::initializers::pipelineCreateInfo(pipelineLayout, renderPass);
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pipelineCI.pInputAssemblyState = &inputAssemblyState;
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pipelineCI.pRasterizationState = &rasterizationState;
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pipelineCI.pColorBlendState = &colorBlendState;
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pipelineCI.pMultisampleState = &multisampleState;
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pipelineCI.pViewportState = &viewportState;
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pipelineCI.pDepthStencilState = &depthStencilState;
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pipelineCI.pDynamicState = &dynamicState;
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pipelineCI.stageCount = static_cast<uint32_t>(shaderStages.size());
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pipelineCI.pStages = shaderStages.data();
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pipelineCI.pVertexInputState = vkglTF::Vertex::getPipelineVertexInputState({ vkglTF::VertexComponent::Position, vkglTF::VertexComponent::UV, vkglTF::VertexComponent::Normal, vkglTF::VertexComponent::Tangent });
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// Parallax mapping modes pipeline
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shaderStages[0] = loadShader(getShadersPath() + "parallaxmapping/parallax.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
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shaderStages[1] = loadShader(getShadersPath() + "parallaxmapping/parallax.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
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VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCI, nullptr, &pipeline));
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}
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void prepareUniformBuffers()
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{
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// Vertex shader uniform buffer
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VK_CHECK_RESULT(vulkanDevice->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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&uniformBuffers.vertexShader,
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sizeof(ubos.vertexShader)));
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// Fragment shader uniform buffer
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VK_CHECK_RESULT(vulkanDevice->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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&uniformBuffers.fragmentShader,
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sizeof(ubos.fragmentShader)));
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// Map persistent
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VK_CHECK_RESULT(uniformBuffers.vertexShader.map());
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VK_CHECK_RESULT(uniformBuffers.fragmentShader.map());
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updateUniformBuffers();
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}
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void updateUniformBuffers()
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{
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// Vertex shader
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ubos.vertexShader.projection = camera.matrices.perspective;
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ubos.vertexShader.view = camera.matrices.view;
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ubos.vertexShader.model = glm::scale(glm::mat4(1.0f), glm::vec3(0.2f));
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if (!paused) {
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ubos.vertexShader.lightPos.x = sin(glm::radians(timer * 360.0f)) * 1.5f;
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ubos.vertexShader.lightPos.z = cos(glm::radians(timer * 360.0f)) * 1.5f;
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}
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ubos.vertexShader.cameraPos = glm::vec4(camera.position, -1.0f) * -1.0f;
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memcpy(uniformBuffers.vertexShader.mapped, &ubos.vertexShader, sizeof(ubos.vertexShader));
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// Fragment shader
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memcpy(uniformBuffers.fragmentShader.mapped, &ubos.fragmentShader, sizeof(ubos.fragmentShader));
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}
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void draw()
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{
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VulkanExampleBase::prepareFrame();
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submitInfo.commandBufferCount = 1;
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submitInfo.pCommandBuffers = &drawCmdBuffers[currentBuffer];
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VK_CHECK_RESULT(vkQueueSubmit(queue, 1, &submitInfo, VK_NULL_HANDLE));
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VulkanExampleBase::submitFrame();
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}
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void prepare()
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{
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VulkanExampleBase::prepare();
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loadAssets();
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prepareUniformBuffers();
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setupDescriptorSetLayout();
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preparePipelines();
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setupDescriptorPool();
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setupDescriptorSet();
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buildCommandBuffers();
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prepared = true;
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}
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virtual void render()
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{
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if (!prepared)
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return;
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draw();
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if (!paused || camera.updated)
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{
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updateUniformBuffers();
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}
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}
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virtual void OnUpdateUIOverlay(vks::UIOverlay *overlay)
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{
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if (overlay->header("Settings")) {
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if (overlay->comboBox("Mode", &ubos.fragmentShader.mappingMode, mappingModes)) {
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updateUniformBuffers();
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}
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}
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}
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};
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VULKAN_EXAMPLE_MAIN() |