865 lines
26 KiB
C++
865 lines
26 KiB
C++
/*
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* Vulkan Example - CPU based fire particle system
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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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#define VERTEX_BUFFER_BIND_ID 0
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#define ENABLE_VALIDATION false
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#define PARTICLE_COUNT 512
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#define PARTICLE_SIZE 10.0f
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#define FLAME_RADIUS 8.0f
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#define PARTICLE_TYPE_FLAME 0
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#define PARTICLE_TYPE_SMOKE 1
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struct Particle {
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glm::vec4 pos;
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glm::vec4 color;
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float alpha;
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float size;
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float rotation;
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uint32_t type;
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// Attributes not used in shader
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glm::vec4 vel;
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float rotationSpeed;
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};
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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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struct {
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struct {
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vkTools::VulkanTexture smoke;
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vkTools::VulkanTexture fire;
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// We use a custom sampler to change some sampler
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// attributes required for rotation the uv coordinates
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// inside the shader for alpha blended textures
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VkSampler sampler;
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} particles;
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struct {
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vkTools::VulkanTexture colorMap;
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vkTools::VulkanTexture normalMap;
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} floor;
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} textures;
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struct {
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vkMeshLoader::Mesh environment;
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} meshes;
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glm::vec3 emitterPos = glm::vec3(0.0f, -FLAME_RADIUS + 2.0f, 0.0f);
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glm::vec3 minVel = glm::vec3(-3.0f, 0.5f, -3.0f);
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glm::vec3 maxVel = glm::vec3(3.0f, 7.0f, 3.0f);
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struct {
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VkBuffer buffer;
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VkDeviceMemory memory;
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// Store the mapped address of the particle data for reuse
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void *mappedMemory;
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// Size of the particle buffer in bytes
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size_t size;
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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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} particles;
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struct {
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vkTools::UniformData fire;
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vkTools::UniformData environment;
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} uniformData;
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struct {
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glm::mat4 projection;
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glm::mat4 model;
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glm::vec2 viewportDim;
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float pointSize = PARTICLE_SIZE;
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} uboVS;
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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, 0.0f, 0.0f, 0.0f);
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glm::vec4 cameraPos;
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} uboEnv;
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struct {
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VkPipeline particles;
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VkPipeline environment;
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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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std::vector<Particle> particleBuffer;
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VulkanExample() : VulkanExampleBase(ENABLE_VALIDATION)
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{
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zoom = -90.0f;
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rotation = { -30.0f, 45.0f, 0.0f };
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title = "Vulkan Example - Particle system";
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zoomSpeed *= 1.5f;
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timerSpeed *= 8.0f;
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srand(time(NULL));
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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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textureLoader->destroyTexture(textures.particles.smoke);
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textureLoader->destroyTexture(textures.particles.fire);
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textureLoader->destroyTexture(textures.floor.colorMap);
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textureLoader->destroyTexture(textures.floor.normalMap);
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vkDestroyPipeline(device, pipelines.particles, nullptr);
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vkDestroyPipeline(device, pipelines.environment, nullptr);
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vkDestroyPipelineLayout(device, pipelineLayout, nullptr);
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vkDestroyDescriptorSetLayout(device, descriptorSetLayout, nullptr);
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vkUnmapMemory(device, particles.memory);
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vkDestroyBuffer(device, particles.buffer, nullptr);
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vkFreeMemory(device, particles.memory, nullptr);
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vkDestroyBuffer(device, uniformData.fire.buffer, nullptr);
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vkFreeMemory(device, uniformData.fire.memory, nullptr);
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vkMeshLoader::freeMeshBufferResources(device, &meshes.environment.buffers);
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vkDestroySampler(device, textures.particles.sampler, nullptr);
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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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VkResult err;
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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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err = vkBeginCommandBuffer(drawCmdBuffers[i], &cmdBufInfo);
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assert(!err);
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vkCmdBeginRenderPass(drawCmdBuffers[i], &renderPassBeginInfo, VK_SUBPASS_CONTENTS_INLINE);
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VkViewport viewport = vkTools::initializers::viewport(
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(float)width,
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(float)height,
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0.0f,
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1.0f);
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vkCmdSetViewport(drawCmdBuffers[i], 0, 1, &viewport);
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VkRect2D scissor = vkTools::initializers::rect2D(
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width,
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height,
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0,
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0);
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vkCmdSetScissor(drawCmdBuffers[i], 0, 1, &scissor);
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// Environment
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meshes.environment.drawIndexed(drawCmdBuffers[i]);
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// Particle system
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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, pipelines.particles);
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VkDeviceSize offsets[1] = { 0 };
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vkCmdBindVertexBuffers(drawCmdBuffers[i], VERTEX_BUFFER_BIND_ID, 1, &particles.buffer, offsets);
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vkCmdDraw(drawCmdBuffers[i], PARTICLE_COUNT, 1, 0, 0);
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vkCmdEndRenderPass(drawCmdBuffers[i]);
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err = vkEndCommandBuffer(drawCmdBuffers[i]);
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assert(!err);
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}
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}
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void draw()
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{
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VkResult err;
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// Get next image in the swap chain (back/front buffer)
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err = swapChain.acquireNextImage(semaphores.presentComplete, ¤tBuffer);
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assert(!err);
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submitPostPresentBarrier(swapChain.buffers[currentBuffer].image);
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// Command buffer to be sumitted to the queue
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submitInfo.commandBufferCount = 1;
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submitInfo.pCommandBuffers = &drawCmdBuffers[currentBuffer];
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// Submit to queue
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err = vkQueueSubmit(queue, 1, &submitInfo, VK_NULL_HANDLE);
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assert(!err);
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submitPrePresentBarrier(swapChain.buffers[currentBuffer].image);
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err = swapChain.queuePresent(queue, currentBuffer, semaphores.renderComplete);
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assert(!err);
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err = vkQueueWaitIdle(queue);
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assert(!err);
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}
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float rnd(float range)
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{
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return range * (rand() / double(RAND_MAX));
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}
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void initParticle(Particle *particle, glm::vec3 emitterPos)
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{
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particle->vel = glm::vec4(0.0f, minVel.y + rnd(maxVel.y - minVel.y), 0.0f, 0.0f);
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particle->alpha = rnd(0.75f);
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particle->size = 1.0f + rnd(0.5f);
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particle->color = glm::vec4(1.0f);
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particle->type = PARTICLE_TYPE_FLAME;
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particle->rotation = rnd(2.0f * M_PI);
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particle->rotationSpeed = rnd(2.0f) - rnd(2.0f);
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// Get random sphere point
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float theta = rnd(2 * M_PI);
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float phi = rnd(M_PI) - M_PI / 2;
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float r = rnd(FLAME_RADIUS);
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particle->pos.x = r * cos(theta) * cos(phi);
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particle->pos.y = r * sin(phi);
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particle->pos.z = r * sin(theta) * cos(phi);
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particle->pos += glm::vec4(emitterPos, 0.0f);
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}
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void transitionParticle(Particle *particle)
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{
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switch (particle->type)
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{
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case PARTICLE_TYPE_FLAME:
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// Flame particles have a chance of turning into smoke
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if (rnd(1.0f) < 0.05f)
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{
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particle->alpha = 0.0f;
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particle->color = glm::vec4(0.25f + rnd(0.25f));
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particle->pos.x *= 0.5f;
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particle->pos.z *= 0.5f;
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particle->vel = glm::vec4(rnd(1.0f) - rnd(1.0f), (minVel.y * 2) + rnd(maxVel.y - minVel.y), rnd(1.0f) - rnd(1.0f), 0.0f);
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particle->size = 1.0f + rnd(0.5f);
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particle->rotationSpeed = rnd(1.0f) - rnd(1.0f);
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particle->type = PARTICLE_TYPE_SMOKE;
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}
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else
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{
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initParticle(particle, emitterPos);
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}
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break;
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case PARTICLE_TYPE_SMOKE:
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// Respawn at end of life
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initParticle(particle, emitterPos);
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break;
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}
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}
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void prepareParticles()
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{
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particleBuffer.resize(PARTICLE_COUNT);
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for (auto& particle : particleBuffer)
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{
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initParticle(&particle, emitterPos);
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particle.alpha = 1.0f - (abs(particle.pos.y) / (FLAME_RADIUS * 2.0f));
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}
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particles.size = particleBuffer.size() * sizeof(Particle);
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createBuffer(
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VK_BUFFER_USAGE_VERTEX_BUFFER_BIT,
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particles.size,
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particleBuffer.data(),
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&particles.buffer,
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&particles.memory);
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// Map the memory and store the pointer for reuse
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VkResult err = vkMapMemory(device, particles.memory, 0, particles.size, 0, &particles.mappedMemory);
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assert(!err);
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}
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void updateParticles()
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{
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float particleTimer = frameTimer * 0.45f;
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for (auto& particle : particleBuffer)
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{
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switch (particle.type)
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{
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case PARTICLE_TYPE_FLAME:
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particle.pos.y -= particle.vel.y * particleTimer * 3.5f;
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particle.alpha += particleTimer * 2.5f;
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particle.size -= particleTimer * 0.5f;
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break;
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case PARTICLE_TYPE_SMOKE:
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particle.pos -= particle.vel * frameTimer * 1.0f;
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particle.alpha += particleTimer * 1.25f;
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particle.size += particleTimer * 0.125f;
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particle.color -= particleTimer * 0.05f;
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break;
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}
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particle.rotation += particleTimer * particle.rotationSpeed;
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// Transition particle state
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if (particle.alpha > 2.0f)
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{
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transitionParticle(&particle);
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}
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}
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size_t size = particleBuffer.size() * sizeof(Particle);
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memcpy(particles.mappedMemory, particleBuffer.data(), size);
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}
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void loadTextures()
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{
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// Particles
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textureLoader->loadTexture(
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"./../data/textures/particle_smoke.ktx",
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VK_FORMAT_BC3_UNORM_BLOCK,
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&textures.particles.smoke);
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textureLoader->loadTexture(
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"./../data/textures/particle_fire.ktx",
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VK_FORMAT_BC3_UNORM_BLOCK,
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&textures.particles.fire);
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// Floor
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textureLoader->loadTexture(
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"./../data/textures/fireplace_colormap_bc3.ktx",
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VK_FORMAT_BC3_UNORM_BLOCK,
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&textures.floor.colorMap);
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textureLoader->loadTexture(
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"./../data/textures/fireplace_normalmap_bc3.ktx",
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VK_FORMAT_BC3_UNORM_BLOCK,
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&textures.floor.normalMap);
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// Create a custom sampler to be used with the particle textures
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// Create sampler
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VkSamplerCreateInfo samplerCreateInfo = vkTools::initializers::samplerCreateInfo();
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samplerCreateInfo.magFilter = VK_FILTER_LINEAR;
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samplerCreateInfo.minFilter = VK_FILTER_LINEAR;
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samplerCreateInfo.mipmapMode = VK_SAMPLER_MIPMAP_MODE_LINEAR;
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// Different address mode
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samplerCreateInfo.addressModeU = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_BORDER;
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samplerCreateInfo.addressModeV = samplerCreateInfo.addressModeU;
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samplerCreateInfo.addressModeW = samplerCreateInfo.addressModeU;
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samplerCreateInfo.mipLodBias = 0.0f;
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samplerCreateInfo.compareOp = VK_COMPARE_OP_NEVER;
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samplerCreateInfo.minLod = 0.0f;
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// Both particle textures have the same number of mip maps
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samplerCreateInfo.maxLod = textures.particles.fire.mipLevels;
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// Enable anisotropic filtering
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samplerCreateInfo.maxAnisotropy = 8;
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samplerCreateInfo.anisotropyEnable = VK_TRUE;
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// Use a different border color (than the normal texture loader) for additive blending
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samplerCreateInfo.borderColor = VK_BORDER_COLOR_FLOAT_TRANSPARENT_BLACK;
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VkResult err = vkCreateSampler(device, &samplerCreateInfo, nullptr, &textures.particles.sampler);
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assert(!err);
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}
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void loadMeshes()
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{
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loadMesh("./../data/models/fireplace.obj", &meshes.environment.buffers, vertexLayout, 10.0f);
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meshes.environment.setupVertexInputState(vertexLayout);
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}
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void setupVertexDescriptions()
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{
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// Binding description
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particles.bindingDescriptions.resize(1);
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particles.bindingDescriptions[0] =
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vkTools::initializers::vertexInputBindingDescription(
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VERTEX_BUFFER_BIND_ID,
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sizeof(Particle),
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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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// Location 0 : Position
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particles.attributeDescriptions.push_back(
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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_R32G32B32A32_SFLOAT,
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0));
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// Location 1 : Color
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particles.attributeDescriptions.push_back(
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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_R32G32B32A32_SFLOAT,
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sizeof(float) * 4));
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// Location 2 : Alpha
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particles.attributeDescriptions.push_back(
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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_R32_SFLOAT,
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sizeof(float) * 8));
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// Location 3 : Size
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particles.attributeDescriptions.push_back(
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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_R32_SFLOAT,
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sizeof(float) * 9));
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// Location 4 : Rotation
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particles.attributeDescriptions.push_back(
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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_R32_SFLOAT,
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sizeof(float) * 10));
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// Location 5 : Type
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particles.attributeDescriptions.push_back(
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vkTools::initializers::vertexInputAttributeDescription(
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VERTEX_BUFFER_BIND_ID,
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5,
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VK_FORMAT_R32_SINT,
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sizeof(float) * 11));
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particles.inputState = vkTools::initializers::pipelineVertexInputStateCreateInfo();
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particles.inputState.vertexBindingDescriptionCount = particles.bindingDescriptions.size();
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particles.inputState.pVertexBindingDescriptions = particles.bindingDescriptions.data();
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particles.inputState.vertexAttributeDescriptionCount = particles.attributeDescriptions.size();
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particles.inputState.pVertexAttributeDescriptions = particles.attributeDescriptions.data();
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}
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void setupDescriptorPool()
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{
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// Example uses one ubo and one 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, 4)
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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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2);
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VkResult vkRes = vkCreateDescriptorPool(device, &descriptorPoolInfo, nullptr, &descriptorPool);
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assert(!vkRes);
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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,
|
|
0),
|
|
// Binding 1 : Fragment shader image sampler
|
|
vkTools::initializers::descriptorSetLayoutBinding(
|
|
VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
|
|
VK_SHADER_STAGE_FRAGMENT_BIT,
|
|
1),
|
|
// Binding 1 : Fragment shader image sampler
|
|
vkTools::initializers::descriptorSetLayoutBinding(
|
|
VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
|
|
VK_SHADER_STAGE_FRAGMENT_BIT,
|
|
2)
|
|
};
|
|
|
|
VkDescriptorSetLayoutCreateInfo descriptorLayout =
|
|
vkTools::initializers::descriptorSetLayoutCreateInfo(
|
|
setLayoutBindings.data(),
|
|
setLayoutBindings.size());
|
|
|
|
VkResult err = vkCreateDescriptorSetLayout(device, &descriptorLayout, nullptr, &descriptorSetLayout);
|
|
assert(!err);
|
|
|
|
VkPipelineLayoutCreateInfo pPipelineLayoutCreateInfo =
|
|
vkTools::initializers::pipelineLayoutCreateInfo(
|
|
&descriptorSetLayout,
|
|
1);
|
|
|
|
err = vkCreatePipelineLayout(device, &pPipelineLayoutCreateInfo, nullptr, &pipelineLayout);
|
|
assert(!err);
|
|
}
|
|
|
|
void setupDescriptorSets()
|
|
{
|
|
VkDescriptorSetAllocateInfo allocInfo =
|
|
vkTools::initializers::descriptorSetAllocateInfo(
|
|
descriptorPool,
|
|
&descriptorSetLayout,
|
|
1);
|
|
|
|
VkResult vkRes = vkAllocateDescriptorSets(device, &allocInfo, &descriptorSet);
|
|
assert(!vkRes);
|
|
|
|
// Image descriptor for the color map texture
|
|
VkDescriptorImageInfo texDescriptorSmoke =
|
|
vkTools::initializers::descriptorImageInfo(
|
|
textures.particles.sampler,
|
|
textures.particles.smoke.view,
|
|
VK_IMAGE_LAYOUT_GENERAL);
|
|
VkDescriptorImageInfo texDescriptorFire =
|
|
vkTools::initializers::descriptorImageInfo(
|
|
textures.particles.sampler,
|
|
textures.particles.fire.view,
|
|
VK_IMAGE_LAYOUT_GENERAL);
|
|
|
|
std::vector<VkWriteDescriptorSet> writeDescriptorSets =
|
|
{
|
|
// Binding 0 : Vertex shader uniform buffer
|
|
vkTools::initializers::writeDescriptorSet(
|
|
descriptorSet,
|
|
VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
|
|
0,
|
|
&uniformData.fire.descriptor),
|
|
// Binding 1 : Smoke texture
|
|
vkTools::initializers::writeDescriptorSet(
|
|
descriptorSet,
|
|
VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
|
|
1,
|
|
&texDescriptorSmoke),
|
|
// Binding 1 : Fire texture array
|
|
vkTools::initializers::writeDescriptorSet(
|
|
descriptorSet,
|
|
VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
|
|
2,
|
|
&texDescriptorFire)
|
|
};
|
|
|
|
vkUpdateDescriptorSets(device, writeDescriptorSets.size(), writeDescriptorSets.data(), 0, NULL);
|
|
|
|
// Environment
|
|
vkRes = vkAllocateDescriptorSets(device, &allocInfo, &meshes.environment.descriptorSet);
|
|
assert(!vkRes);
|
|
|
|
VkDescriptorImageInfo texDescriptorColorMap =
|
|
vkTools::initializers::descriptorImageInfo(
|
|
textures.floor.colorMap.sampler,
|
|
textures.floor.colorMap.view,
|
|
VK_IMAGE_LAYOUT_GENERAL);
|
|
VkDescriptorImageInfo texDescriptorNormalMap =
|
|
vkTools::initializers::descriptorImageInfo(
|
|
textures.floor.normalMap.sampler,
|
|
textures.floor.normalMap.view,
|
|
VK_IMAGE_LAYOUT_GENERAL);
|
|
|
|
writeDescriptorSets.clear();
|
|
|
|
// Binding 0 : Vertex shader uniform buffer
|
|
writeDescriptorSets.push_back(
|
|
vkTools::initializers::writeDescriptorSet(
|
|
meshes.environment.descriptorSet,
|
|
VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
|
|
0,
|
|
&uniformData.environment.descriptor));
|
|
// Binding 1 : Color map
|
|
writeDescriptorSets.push_back(
|
|
vkTools::initializers::writeDescriptorSet(
|
|
meshes.environment.descriptorSet,
|
|
VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
|
|
1,
|
|
&texDescriptorColorMap));
|
|
// Binding 2 : Normal map
|
|
writeDescriptorSets.push_back(
|
|
vkTools::initializers::writeDescriptorSet(
|
|
meshes.environment.descriptorSet,
|
|
VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
|
|
2,
|
|
&texDescriptorNormalMap));
|
|
|
|
vkUpdateDescriptorSets(device, writeDescriptorSets.size(), writeDescriptorSets.data(), 0, NULL);
|
|
}
|
|
|
|
void preparePipelines()
|
|
{
|
|
VkPipelineInputAssemblyStateCreateInfo inputAssemblyState =
|
|
vkTools::initializers::pipelineInputAssemblyStateCreateInfo(
|
|
VK_PRIMITIVE_TOPOLOGY_POINT_LIST,
|
|
0,
|
|
VK_FALSE);
|
|
|
|
VkPipelineRasterizationStateCreateInfo rasterizationState =
|
|
vkTools::initializers::pipelineRasterizationStateCreateInfo(
|
|
VK_POLYGON_MODE_FILL,
|
|
VK_CULL_MODE_BACK_BIT,
|
|
VK_FRONT_FACE_CLOCKWISE,
|
|
0);
|
|
|
|
VkPipelineColorBlendAttachmentState blendAttachmentState =
|
|
vkTools::initializers::pipelineColorBlendAttachmentState(
|
|
0xf,
|
|
VK_FALSE);
|
|
|
|
VkPipelineColorBlendStateCreateInfo colorBlendState =
|
|
vkTools::initializers::pipelineColorBlendStateCreateInfo(
|
|
1,
|
|
&blendAttachmentState);
|
|
|
|
VkPipelineDepthStencilStateCreateInfo depthStencilState =
|
|
vkTools::initializers::pipelineDepthStencilStateCreateInfo(
|
|
VK_TRUE,
|
|
VK_TRUE,
|
|
VK_COMPARE_OP_LESS_OR_EQUAL);
|
|
|
|
VkPipelineViewportStateCreateInfo viewportState =
|
|
vkTools::initializers::pipelineViewportStateCreateInfo(1, 1, 0);
|
|
|
|
VkPipelineMultisampleStateCreateInfo multisampleState =
|
|
vkTools::initializers::pipelineMultisampleStateCreateInfo(
|
|
VK_SAMPLE_COUNT_1_BIT,
|
|
0);
|
|
|
|
std::vector<VkDynamicState> dynamicStateEnables = {
|
|
VK_DYNAMIC_STATE_VIEWPORT,
|
|
VK_DYNAMIC_STATE_SCISSOR
|
|
};
|
|
VkPipelineDynamicStateCreateInfo dynamicState =
|
|
vkTools::initializers::pipelineDynamicStateCreateInfo(
|
|
dynamicStateEnables.data(),
|
|
dynamicStateEnables.size(),
|
|
0);
|
|
|
|
// Load shaders
|
|
std::array<VkPipelineShaderStageCreateInfo, 2> shaderStages;
|
|
|
|
shaderStages[0] = loadShader("./../data/shaders/particlefire/particle.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
|
|
shaderStages[1] = loadShader("./../data/shaders/particlefire/particle.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
|
|
|
|
VkGraphicsPipelineCreateInfo pipelineCreateInfo =
|
|
vkTools::initializers::pipelineCreateInfo(
|
|
pipelineLayout,
|
|
renderPass,
|
|
0);
|
|
|
|
pipelineCreateInfo.pVertexInputState = &particles.inputState;
|
|
pipelineCreateInfo.pInputAssemblyState = &inputAssemblyState;
|
|
pipelineCreateInfo.pRasterizationState = &rasterizationState;
|
|
pipelineCreateInfo.pColorBlendState = &colorBlendState;
|
|
pipelineCreateInfo.pMultisampleState = &multisampleState;
|
|
pipelineCreateInfo.pViewportState = &viewportState;
|
|
pipelineCreateInfo.pDepthStencilState = &depthStencilState;
|
|
pipelineCreateInfo.pDynamicState = &dynamicState;
|
|
pipelineCreateInfo.stageCount = shaderStages.size();
|
|
pipelineCreateInfo.pStages = shaderStages.data();
|
|
|
|
depthStencilState.depthWriteEnable = VK_FALSE;
|
|
|
|
// Premulitplied alpha
|
|
blendAttachmentState.blendEnable = VK_TRUE;
|
|
blendAttachmentState.srcColorBlendFactor = VK_BLEND_FACTOR_ONE;
|
|
blendAttachmentState.dstColorBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA;
|
|
blendAttachmentState.colorBlendOp = VK_BLEND_OP_ADD;
|
|
blendAttachmentState.srcAlphaBlendFactor = VK_BLEND_FACTOR_ONE;
|
|
blendAttachmentState.dstAlphaBlendFactor = VK_BLEND_FACTOR_ZERO;
|
|
blendAttachmentState.alphaBlendOp = VK_BLEND_OP_ADD;
|
|
blendAttachmentState.colorWriteMask = VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT;
|
|
|
|
VkResult err = vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCreateInfo, nullptr, &pipelines.particles);
|
|
assert(!err);
|
|
|
|
// Environment rendering pipeline (normal mapped)
|
|
shaderStages[0] = loadShader("./../data/shaders/particlefire/normalmap.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
|
|
shaderStages[1] = loadShader("./../data/shaders/particlefire/normalmap.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
|
|
pipelineCreateInfo.pVertexInputState = &meshes.environment.vertexInputState;
|
|
blendAttachmentState.blendEnable = VK_FALSE;
|
|
depthStencilState.depthWriteEnable = VK_TRUE;
|
|
inputAssemblyState.topology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST;
|
|
err = vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCreateInfo, nullptr, &pipelines.environment);
|
|
assert(!err);
|
|
meshes.environment.pipeline = pipelines.environment;
|
|
meshes.environment.pipelineLayout = pipelineLayout;
|
|
}
|
|
|
|
// Prepare and initialize uniform buffer containing shader uniforms
|
|
void prepareUniformBuffers()
|
|
{
|
|
// Vertex shader uniform buffer block
|
|
createBuffer(
|
|
VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
|
|
sizeof(uboVS),
|
|
&uboVS,
|
|
&uniformData.fire.buffer,
|
|
&uniformData.fire.memory,
|
|
&uniformData.fire.descriptor);
|
|
|
|
// Vertex shader uniform buffer block
|
|
createBuffer(
|
|
VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
|
|
sizeof(uboEnv),
|
|
&uboEnv,
|
|
&uniformData.environment.buffer,
|
|
&uniformData.environment.memory,
|
|
&uniformData.environment.descriptor);
|
|
|
|
updateUniformBuffers();
|
|
}
|
|
|
|
void updateUniformBufferLight()
|
|
{
|
|
// Environment
|
|
uboEnv.lightPos.x = sin(timer * 2 * M_PI) * 1.5f;
|
|
uboEnv.lightPos.y = 0.0f;
|
|
uboEnv.lightPos.z = cos(timer * 2 * M_PI) * 1.5f;
|
|
uint8_t *pData;
|
|
VkResult err = vkMapMemory(device, uniformData.environment.memory, 0, sizeof(uboEnv), 0, (void **)&pData);
|
|
assert(!err);
|
|
memcpy(pData, &uboEnv, sizeof(uboEnv));
|
|
vkUnmapMemory(device, uniformData.environment.memory);
|
|
}
|
|
|
|
void updateUniformBuffers()
|
|
{
|
|
// Vertex shader
|
|
glm::mat4 viewMatrix = glm::mat4();
|
|
uboVS.projection = glm::perspective(glm::radians(60.0f), (float)width / (float)height, 0.001f, 256.0f);
|
|
viewMatrix = glm::translate(viewMatrix, glm::vec3(0.0f, 0.0f, zoom));
|
|
|
|
uboVS.model = glm::mat4();
|
|
uboVS.model = viewMatrix * glm::translate(uboVS.model, glm::vec3(0.0f, 15.0f, 0.0f));
|
|
uboVS.model = glm::rotate(uboVS.model, glm::radians(rotation.x), glm::vec3(1.0f, 0.0f, 0.0f));
|
|
uboVS.model = glm::rotate(uboVS.model, glm::radians(rotation.y), glm::vec3(0.0f, 1.0f, 0.0f));
|
|
uboVS.model = glm::rotate(uboVS.model, glm::radians(rotation.z), glm::vec3(0.0f, 0.0f, 1.0f));
|
|
|
|
uboVS.viewportDim = glm::vec2((float)width, (float)height);
|
|
|
|
uint8_t *pData;
|
|
VkResult err = vkMapMemory(device, uniformData.fire.memory, 0, sizeof(uboVS), 0, (void **)&pData);
|
|
assert(!err);
|
|
memcpy(pData, &uboVS, sizeof(uboVS));
|
|
vkUnmapMemory(device, uniformData.fire.memory);
|
|
|
|
// Environment
|
|
uboEnv.projection = uboVS.projection;
|
|
uboEnv.model = uboVS.model;
|
|
uboEnv.normal = glm::inverseTranspose(uboEnv.model);
|
|
uboEnv.cameraPos = glm::vec4(0.0, 0.0, zoom, 0.0);
|
|
err = vkMapMemory(device, uniformData.environment.memory, 0, sizeof(uboEnv), 0, (void **)&pData);
|
|
assert(!err);
|
|
memcpy(pData, &uboEnv, sizeof(uboEnv));
|
|
vkUnmapMemory(device, uniformData.environment.memory);
|
|
}
|
|
|
|
void prepare()
|
|
{
|
|
VulkanExampleBase::prepare();
|
|
loadTextures();
|
|
prepareParticles();
|
|
setupVertexDescriptions();
|
|
prepareUniformBuffers();
|
|
setupDescriptorSetLayout();
|
|
loadMeshes();
|
|
preparePipelines();
|
|
setupDescriptorPool();
|
|
setupDescriptorSets();
|
|
buildCommandBuffers();
|
|
prepared = true;
|
|
}
|
|
|
|
virtual void render()
|
|
{
|
|
if (!prepared)
|
|
return;
|
|
vkDeviceWaitIdle(device);
|
|
draw();
|
|
vkDeviceWaitIdle(device);
|
|
if (!paused)
|
|
{
|
|
updateUniformBufferLight();
|
|
updateParticles();
|
|
}
|
|
}
|
|
|
|
virtual void viewChanged()
|
|
{
|
|
updateUniformBuffers();
|
|
}
|
|
};
|
|
|
|
VulkanExample *vulkanExample;
|
|
|
|
#ifdef _WIN32
|
|
|
|
LRESULT CALLBACK WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
|
|
{
|
|
if (vulkanExample != NULL)
|
|
{
|
|
vulkanExample->handleMessages(hWnd, uMsg, wParam, lParam);
|
|
}
|
|
return (DefWindowProc(hWnd, uMsg, wParam, lParam));
|
|
}
|
|
|
|
#else
|
|
|
|
static void handleEvent(const xcb_generic_event_t *event)
|
|
{
|
|
if (vulkanExample != NULL)
|
|
{
|
|
vulkanExample->handleEvent(event);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#ifdef _WIN32
|
|
int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR pCmdLine, int nCmdShow)
|
|
#else
|
|
int main(const int argc, const char *argv[])
|
|
#endif
|
|
{
|
|
vulkanExample = new VulkanExample();
|
|
#ifdef _WIN32
|
|
vulkanExample->setupWindow(hInstance, WndProc);
|
|
#else
|
|
vulkanExample->setupWindow();
|
|
#endif
|
|
vulkanExample->initSwapchain();
|
|
vulkanExample->prepare();
|
|
vulkanExample->renderLoop();
|
|
delete(vulkanExample);
|
|
return 0;
|
|
}
|