596 lines
No EOL
18 KiB
C++
596 lines
No EOL
18 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 "vulkanbuffer.hpp"
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#define VERTEX_BUFFER_BIND_ID 0
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#define ENABLE_VALIDATION false
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// Vertex layout for this example
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std::vector<vkMeshLoader::VertexLayout> vertexLayout =
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{
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vkMeshLoader::VERTEX_LAYOUT_POSITION,
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vkMeshLoader::VERTEX_LAYOUT_UV,
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vkMeshLoader::VERTEX_LAYOUT_NORMAL,
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vkMeshLoader::VERTEX_LAYOUT_TANGENT,
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vkMeshLoader::VERTEX_LAYOUT_BITANGENT
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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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bool splitScreen = false;
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struct {
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vkTools::VulkanTexture colorMap;
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// Normals and height are combined in one texture (height = alpha channel)
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vkTools::VulkanTexture normalHeightMap;
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} textures;
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struct {
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VkPipelineVertexInputStateCreateInfo inputState;
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std::vector<VkVertexInputBindingDescription> bindingDescriptions;
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std::vector<VkVertexInputAttributeDescription> attributeDescriptions;
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} vertices;
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struct {
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vkMeshLoader::MeshBuffer quad;
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} meshes;
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struct {
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vk::Buffer vertexShader;
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vk::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 model;
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glm::mat4 normal;
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glm::vec4 lightPos = glm::vec4(0.0f);
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glm::vec4 cameraPos;
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} vertexShader;
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struct {
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// Scale and bias control the parallax offset effect
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// They need to be tweaked for each material
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// Getting them wrong destroys the depth effect
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float scale = 0.06f;
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float bias = -0.04f;
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float lightRadius = 1.0f;
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int32_t usePom = 1;
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int32_t displayNormalMap = 0;
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} fragmentShader;
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} ubos;
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struct {
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VkPipeline parallaxMapping;
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VkPipeline normalMapping;
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} pipelines;
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VkPipelineLayout pipelineLayout;
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VkDescriptorSet descriptorSet;
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VkDescriptorSetLayout descriptorSetLayout;
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VulkanExample() : VulkanExampleBase(ENABLE_VALIDATION)
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{
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zoom = -2.7f;
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rotation = glm::vec3(56.0f, 0.0f, 0.0f);
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rotationSpeed = 0.25f;
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enableTextOverlay = true;
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timerSpeed *= 0.25f;
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paused = true;
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title = "Vulkan Example - Parallax Mapping";
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}
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~VulkanExample()
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{
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// Clean up used Vulkan resources
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// Note : Inherited destructor cleans up resources stored in base class
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vkDestroyPipeline(device, pipelines.parallaxMapping, nullptr);
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vkDestroyPipeline(device, pipelines.normalMapping, nullptr);
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vkDestroyPipelineLayout(device, pipelineLayout, nullptr);
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vkDestroyDescriptorSetLayout(device, descriptorSetLayout, nullptr);
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vkMeshLoader::freeMeshBufferResources(device, &meshes.quad);
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uniformBuffers.vertexShader.destroy();
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uniformBuffers.fragmentShader.destroy();
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textureLoader->destroyTexture(textures.colorMap);
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textureLoader->destroyTexture(textures.normalHeightMap);
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}
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void loadTextures()
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{
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textureLoader->loadTexture(
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getAssetPath() + "textures/rocks_color_bc3.dds",
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VK_FORMAT_BC3_UNORM_BLOCK,
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&textures.colorMap);
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textureLoader->loadTexture(
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getAssetPath() + "textures/rocks_normal_height_rgba.dds",
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VK_FORMAT_R8G8B8A8_UNORM,
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&textures.normalHeightMap);
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}
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void reBuildCommandBuffers()
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{
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if (!checkCommandBuffers())
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{
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destroyCommandBuffers();
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createCommandBuffers();
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}
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buildCommandBuffers();
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}
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void buildCommandBuffers()
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{
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VkCommandBufferBeginInfo cmdBufInfo = vkTools::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 = vkTools::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 = vkTools::initializers::viewport((splitScreen) ? (float)width / 2.0f : (float)width, (float)height, 0.0f, 1.0f);
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vkCmdSetViewport(drawCmdBuffers[i], 0, 1, &viewport);
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VkRect2D scissor = vkTools::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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VkDeviceSize offsets[1] = { 0 };
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vkCmdBindVertexBuffers(drawCmdBuffers[i], VERTEX_BUFFER_BIND_ID, 1, &meshes.quad.vertices.buf, offsets);
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vkCmdBindIndexBuffer(drawCmdBuffers[i], meshes.quad.indices.buf, 0, VK_INDEX_TYPE_UINT32);
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// Parallax enabled
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vkCmdSetViewport(drawCmdBuffers[i], 0, 1, &viewport);
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vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.parallaxMapping);
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vkCmdDrawIndexed(drawCmdBuffers[i], meshes.quad.indexCount, 1, 0, 0, 1);
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// Normal mapping
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if (splitScreen)
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{
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viewport.x = (float)width / 2.0f;
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vkCmdSetViewport(drawCmdBuffers[i], 0, 1, &viewport);
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vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.normalMapping);
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vkCmdDrawIndexed(drawCmdBuffers[i], meshes.quad.indexCount, 1, 0, 0, 1);
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}
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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 loadMeshes()
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{
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loadMesh(getAssetPath() + "models/plane_z.obj", &meshes.quad, vertexLayout, 0.1f);
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}
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void setupVertexDescriptions()
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{
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// Binding description
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vertices.bindingDescriptions.resize(1);
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vertices.bindingDescriptions[0] =
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vkTools::initializers::vertexInputBindingDescription(
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VERTEX_BUFFER_BIND_ID,
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vkMeshLoader::vertexSize(vertexLayout),
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VK_VERTEX_INPUT_RATE_VERTEX);
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// Attribute descriptions
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// Describes memory layout and shader positions
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vertices.attributeDescriptions.resize(5);
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// Location 0 : Position
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vertices.attributeDescriptions[0] =
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vkTools::initializers::vertexInputAttributeDescription(
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VERTEX_BUFFER_BIND_ID,
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0,
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VK_FORMAT_R32G32B32_SFLOAT,
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0);
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// Location 1 : Texture coordinates
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vertices.attributeDescriptions[1] =
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vkTools::initializers::vertexInputAttributeDescription(
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VERTEX_BUFFER_BIND_ID,
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1,
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VK_FORMAT_R32G32_SFLOAT,
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sizeof(float) * 3);
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// Location 2 : Normal
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vertices.attributeDescriptions[2] =
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vkTools::initializers::vertexInputAttributeDescription(
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VERTEX_BUFFER_BIND_ID,
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2,
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VK_FORMAT_R32G32B32_SFLOAT,
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sizeof(float) * 5);
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// Location 3 : Tangent
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vertices.attributeDescriptions[3] =
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vkTools::initializers::vertexInputAttributeDescription(
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VERTEX_BUFFER_BIND_ID,
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3,
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VK_FORMAT_R32G32B32_SFLOAT,
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sizeof(float) * 8);
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// Location 4 : Bitangent
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vertices.attributeDescriptions[4] =
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vkTools::initializers::vertexInputAttributeDescription(
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VERTEX_BUFFER_BIND_ID,
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4,
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VK_FORMAT_R32G32B32_SFLOAT,
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sizeof(float) * 11);
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vertices.inputState = vkTools::initializers::pipelineVertexInputStateCreateInfo();
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vertices.inputState.vertexBindingDescriptionCount = vertices.bindingDescriptions.size();
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vertices.inputState.pVertexBindingDescriptions = vertices.bindingDescriptions.data();
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vertices.inputState.vertexAttributeDescriptionCount = vertices.attributeDescriptions.size();
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vertices.inputState.pVertexAttributeDescriptions = vertices.attributeDescriptions.data();
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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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vkTools::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 2),
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vkTools::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 2)
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};
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VkDescriptorPoolCreateInfo descriptorPoolInfo =
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vkTools::initializers::descriptorPoolCreateInfo(
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poolSizes.size(),
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poolSizes.data(),
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4);
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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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{
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// Binding 0 : Vertex shader uniform buffer
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vkTools::initializers::descriptorSetLayoutBinding(
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VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
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VK_SHADER_STAGE_VERTEX_BIT,
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0),
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// Binding 1 : Fragment shader color map image sampler
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vkTools::initializers::descriptorSetLayoutBinding(
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VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
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VK_SHADER_STAGE_FRAGMENT_BIT,
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1),
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// Binding 2 : Fragment combined normal and heightmap
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vkTools::initializers::descriptorSetLayoutBinding(
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VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
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VK_SHADER_STAGE_FRAGMENT_BIT,
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2),
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// Binding 3 : Fragment shader uniform buffer
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vkTools::initializers::descriptorSetLayoutBinding(
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VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
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VK_SHADER_STAGE_FRAGMENT_BIT,
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3)
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};
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VkDescriptorSetLayoutCreateInfo descriptorLayout =
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vkTools::initializers::descriptorSetLayoutCreateInfo(
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setLayoutBindings.data(),
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setLayoutBindings.size());
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VK_CHECK_RESULT(vkCreateDescriptorSetLayout(device, &descriptorLayout, nullptr, &descriptorSetLayout));
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VkPipelineLayoutCreateInfo pPipelineLayoutCreateInfo =
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vkTools::initializers::pipelineLayoutCreateInfo(
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&descriptorSetLayout,
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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 =
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vkTools::initializers::descriptorSetAllocateInfo(
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descriptorPool,
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&descriptorSetLayout,
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1);
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VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &allocInfo, &descriptorSet));
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std::vector<VkWriteDescriptorSet> writeDescriptorSets =
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{
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// Binding 0 : Vertex shader uniform buffer
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vkTools::initializers::writeDescriptorSet(
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descriptorSet,
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VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
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0,
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&uniformBuffers.vertexShader.descriptor),
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// Binding 1 : Fragment shader image sampler
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vkTools::initializers::writeDescriptorSet(
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descriptorSet,
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VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
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1,
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&textures.colorMap.descriptor),
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// Binding 2 : Combined normal and heightmap
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vkTools::initializers::writeDescriptorSet(
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descriptorSet,
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VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
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2,
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&textures.normalHeightMap.descriptor),
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// Binding 3 : Fragment shader uniform buffer
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vkTools::initializers::writeDescriptorSet(
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descriptorSet,
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VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
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3,
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&uniformBuffers.fragmentShader.descriptor)
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};
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vkUpdateDescriptorSets(device, 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 =
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vkTools::initializers::pipelineInputAssemblyStateCreateInfo(
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VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST,
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0,
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VK_FALSE);
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VkPipelineRasterizationStateCreateInfo rasterizationState =
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vkTools::initializers::pipelineRasterizationStateCreateInfo(
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VK_POLYGON_MODE_FILL,
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VK_CULL_MODE_NONE,
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VK_FRONT_FACE_COUNTER_CLOCKWISE,
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0);
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VkPipelineColorBlendAttachmentState blendAttachmentState =
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vkTools::initializers::pipelineColorBlendAttachmentState(
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0xf,
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VK_FALSE);
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VkPipelineColorBlendStateCreateInfo colorBlendState =
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vkTools::initializers::pipelineColorBlendStateCreateInfo(
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1,
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&blendAttachmentState);
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VkPipelineDepthStencilStateCreateInfo depthStencilState =
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vkTools::initializers::pipelineDepthStencilStateCreateInfo(
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VK_TRUE,
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VK_TRUE,
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VK_COMPARE_OP_LESS_OR_EQUAL);
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VkPipelineViewportStateCreateInfo viewportState =
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vkTools::initializers::pipelineViewportStateCreateInfo(1, 1, 0);
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VkPipelineMultisampleStateCreateInfo multisampleState =
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vkTools::initializers::pipelineMultisampleStateCreateInfo(
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VK_SAMPLE_COUNT_1_BIT,
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0);
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std::vector<VkDynamicState> dynamicStateEnables = {
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VK_DYNAMIC_STATE_VIEWPORT,
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VK_DYNAMIC_STATE_SCISSOR
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};
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VkPipelineDynamicStateCreateInfo dynamicState =
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vkTools::initializers::pipelineDynamicStateCreateInfo(
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dynamicStateEnables.data(),
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dynamicStateEnables.size(),
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0);
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// Parallax mapping pipeline
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// Load shaders
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std::array<VkPipelineShaderStageCreateInfo, 2> shaderStages;
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shaderStages[0] = loadShader(getAssetPath() + "shaders/parallax/parallax.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
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shaderStages[1] = loadShader(getAssetPath() + "shaders/parallax/parallax.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
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VkGraphicsPipelineCreateInfo pipelineCreateInfo =
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vkTools::initializers::pipelineCreateInfo(
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pipelineLayout,
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renderPass,
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0);
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pipelineCreateInfo.pVertexInputState = &vertices.inputState;
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pipelineCreateInfo.pInputAssemblyState = &inputAssemblyState;
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pipelineCreateInfo.pRasterizationState = &rasterizationState;
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pipelineCreateInfo.pColorBlendState = &colorBlendState;
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pipelineCreateInfo.pMultisampleState = &multisampleState;
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pipelineCreateInfo.pViewportState = &viewportState;
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pipelineCreateInfo.pDepthStencilState = &depthStencilState;
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pipelineCreateInfo.pDynamicState = &dynamicState;
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pipelineCreateInfo.stageCount = shaderStages.size();
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pipelineCreateInfo.pStages = shaderStages.data();
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VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCreateInfo, nullptr, &pipelines.parallaxMapping));
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// Normal mapping (no parallax effect)
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shaderStages[0] = loadShader(getAssetPath() + "shaders/parallax/normalmap.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
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shaderStages[1] = loadShader(getAssetPath() + "shaders/parallax/normalmap.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
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VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCreateInfo, nullptr, &pipelines.normalMapping));
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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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glm::mat4 viewMatrix = glm::mat4();
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ubos.vertexShader.projection = glm::perspective(glm::radians(45.0f), (float)(width* ((splitScreen) ? 0.5f : 1.0f)) / (float)height, 0.001f, 256.0f);
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viewMatrix = glm::translate(viewMatrix, glm::vec3(0.0f, 0.0f, zoom));
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ubos.vertexShader.model = glm::mat4();
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ubos.vertexShader.model = viewMatrix * glm::translate(ubos.vertexShader.model, cameraPos);
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ubos.vertexShader.model = glm::rotate(ubos.vertexShader.model, glm::radians(rotation.x), glm::vec3(1.0f, 0.0f, 0.0f));
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ubos.vertexShader.model = glm::rotate(ubos.vertexShader.model, glm::radians(rotation.y), glm::vec3(0.0f, 1.0f, 0.0f));
|
|
ubos.vertexShader.model = glm::rotate(ubos.vertexShader.model, glm::radians(rotation.z), glm::vec3(0.0f, 0.0f, 1.0f));
|
|
|
|
ubos.vertexShader.normal = glm::inverseTranspose(ubos.vertexShader.model);
|
|
|
|
if (!paused)
|
|
{
|
|
ubos.vertexShader.lightPos.x = sin(glm::radians(timer * 360.0f)) * 0.5f;
|
|
ubos.vertexShader.lightPos.y = cos(glm::radians(timer * 360.0f)) * 0.5f;
|
|
}
|
|
|
|
ubos.vertexShader.cameraPos = glm::vec4(0.0, 0.0, zoom, 0.0);
|
|
|
|
memcpy(uniformBuffers.vertexShader.mapped, &ubos.vertexShader, sizeof(ubos.vertexShader));
|
|
|
|
// Fragment shader
|
|
memcpy(uniformBuffers.fragmentShader.mapped, &ubos.fragmentShader, sizeof(ubos.fragmentShader));
|
|
}
|
|
|
|
void draw()
|
|
{
|
|
VulkanExampleBase::prepareFrame();
|
|
|
|
// Command buffer to be sumitted to the queue
|
|
submitInfo.commandBufferCount = 1;
|
|
submitInfo.pCommandBuffers = &drawCmdBuffers[currentBuffer];
|
|
|
|
// Submit to queue
|
|
VK_CHECK_RESULT(vkQueueSubmit(queue, 1, &submitInfo, VK_NULL_HANDLE));
|
|
|
|
VulkanExampleBase::submitFrame();
|
|
}
|
|
|
|
void prepare()
|
|
{
|
|
VulkanExampleBase::prepare();
|
|
loadTextures();
|
|
loadMeshes();
|
|
setupVertexDescriptions();
|
|
prepareUniformBuffers();
|
|
setupDescriptorSetLayout();
|
|
preparePipelines();
|
|
setupDescriptorPool();
|
|
setupDescriptorSet();
|
|
buildCommandBuffers();
|
|
prepared = true;
|
|
}
|
|
|
|
virtual void render()
|
|
{
|
|
if (!prepared)
|
|
return;
|
|
draw();
|
|
if (!paused)
|
|
{
|
|
updateUniformBuffers();
|
|
}
|
|
}
|
|
|
|
virtual void viewChanged()
|
|
{
|
|
updateUniformBuffers();
|
|
}
|
|
|
|
void toggleParallaxOffset()
|
|
{
|
|
ubos.fragmentShader.usePom = !ubos.fragmentShader.usePom;
|
|
updateUniformBuffers();
|
|
}
|
|
|
|
void toggleNormalMapDisplay()
|
|
{
|
|
ubos.fragmentShader.displayNormalMap = !ubos.fragmentShader.displayNormalMap;
|
|
updateUniformBuffers();
|
|
}
|
|
|
|
void toggleSplitScreen()
|
|
{
|
|
splitScreen = !splitScreen;
|
|
updateUniformBuffers();
|
|
reBuildCommandBuffers();
|
|
}
|
|
|
|
virtual void keyPressed(uint32_t keyCode)
|
|
{
|
|
switch (keyCode)
|
|
{
|
|
case KEY_O:
|
|
case GAMEPAD_BUTTON_A:
|
|
toggleParallaxOffset();
|
|
break;
|
|
case KEY_N:
|
|
case GAMEPAD_BUTTON_X:
|
|
toggleNormalMapDisplay();
|
|
break;
|
|
case KEY_S:
|
|
case GAMEPAD_BUTTON_Y:
|
|
toggleSplitScreen();
|
|
break;
|
|
}
|
|
}
|
|
|
|
virtual void getOverlayText(VulkanTextOverlay *textOverlay)
|
|
{
|
|
#if defined(__ANDROID__)
|
|
textOverlay->addText("Press \"Button A\" to toggle parallax", 5.0f, 85.0f, VulkanTextOverlay::alignLeft);
|
|
textOverlay->addText("Press \"Button X\" to toggle normals", 5.0f, 100.0f, VulkanTextOverlay::alignLeft);
|
|
textOverlay->addText("Press \"Button Y\" to toggle splitscreen", 5.0f, 115.0f, VulkanTextOverlay::alignLeft);
|
|
#else
|
|
textOverlay->addText("Press \"o\" to toggle parallax", 5.0f, 85.0f, VulkanTextOverlay::alignLeft);
|
|
textOverlay->addText("Press \"n\" to toggle normals", 5.0f, 100.0f, VulkanTextOverlay::alignLeft);
|
|
textOverlay->addText("Press \"s\" to toggle splitscreen", 5.0f, 115.0f, VulkanTextOverlay::alignLeft);
|
|
#endif
|
|
}
|
|
};
|
|
|
|
VULKAN_EXAMPLE_MAIN() |