Moved example source files into sub folder
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saschawillems
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69 changed files with 685 additions and 164 deletions
375
examples/gears/gears.cpp
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375
examples/gears/gears.cpp
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/*
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* Vulkan Example - Animated gears using multiple uniform buffers
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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 <vulkan/vulkan.h>
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#include "vulkangear.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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class VulkanExample : public VulkanExampleBase
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{
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public:
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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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VkPipeline solid;
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} pipelines;
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std::vector<VulkanGear*> gears;
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VkPipelineLayout pipelineLayout;
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VkDescriptorSetLayout descriptorSetLayout;
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VulkanExample() : VulkanExampleBase(ENABLE_VALIDATION)
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{
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zoom = -16.0f;
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rotation = glm::vec3(-23.75f, 41.25f, 21.0f);
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timerSpeed *= 0.25f;
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title = "Rotating gears";
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settings.overlay = true;
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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.solid, nullptr);
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vkDestroyPipelineLayout(device, pipelineLayout, nullptr);
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vkDestroyDescriptorSetLayout(device, descriptorSetLayout, nullptr);
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for (auto& gear : gears)
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{
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delete(gear);
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}
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}
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void buildCommandBuffers()
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{
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VkCommandBufferBeginInfo cmdBufInfo = vks::initializers::commandBufferBeginInfo();
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VkClearValue clearValues[2];
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clearValues[0].color = defaultClearColor;
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clearValues[1].depthStencil = { 1.0f, 0 };
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VkRenderPassBeginInfo renderPassBeginInfo = vks::initializers::renderPassBeginInfo();
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renderPassBeginInfo.renderPass = renderPass;
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renderPassBeginInfo.renderArea.offset.x = 0;
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renderPassBeginInfo.renderArea.offset.y = 0;
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renderPassBeginInfo.renderArea.extent.width = width;
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renderPassBeginInfo.renderArea.extent.height = height;
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renderPassBeginInfo.clearValueCount = 2;
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renderPassBeginInfo.pClearValues = clearValues;
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for (int32_t i = 0; i < drawCmdBuffers.size(); ++i)
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{
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renderPassBeginInfo.framebuffer = frameBuffers[i];
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VK_CHECK_RESULT(vkBeginCommandBuffer(drawCmdBuffers[i], &cmdBufInfo));
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vkCmdBeginRenderPass(drawCmdBuffers[i], &renderPassBeginInfo, VK_SUBPASS_CONTENTS_INLINE);
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VkViewport viewport = vks::initializers::viewport((float)width, (float)height, 0.0f, 1.0f);
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vkCmdSetViewport(drawCmdBuffers[i], 0, 1, &viewport);
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VkRect2D scissor = vks::initializers::rect2D(width, height, 0, 0);
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vkCmdSetScissor(drawCmdBuffers[i], 0, 1, &scissor);
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vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.solid);
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for (auto& gear : gears)
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{
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gear->draw(drawCmdBuffers[i], pipelineLayout);
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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 prepareVertices()
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{
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// Gear definitions
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std::vector<float> innerRadiuses = { 1.0f, 0.5f, 1.3f };
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std::vector<float> outerRadiuses = { 4.0f, 2.0f, 2.0f };
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std::vector<float> widths = { 1.0f, 2.0f, 0.5f };
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std::vector<int32_t> toothCount = { 20, 10, 10 };
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std::vector<float> toothDepth = { 0.7f, 0.7f, 0.7f };
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std::vector<glm::vec3> colors = {
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glm::vec3(1.0f, 0.0f, 0.0f),
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glm::vec3(0.0f, 1.0f, 0.2f),
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glm::vec3(0.0f, 0.0f, 1.0f)
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};
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std::vector<glm::vec3> positions = {
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glm::vec3(-3.0, 0.0, 0.0),
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glm::vec3(3.1, 0.0, 0.0),
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glm::vec3(-3.1, -6.2, 0.0)
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};
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std::vector<float> rotationSpeeds = { 1.0f, -2.0f, -2.0f };
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std::vector<float> rotationOffsets = { 0.0f, -9.0f, -30.0f };
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gears.resize(positions.size());
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for (int32_t i = 0; i < gears.size(); ++i)
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{
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GearInfo gearInfo = {};
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gearInfo.innerRadius = innerRadiuses[i];
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gearInfo.outerRadius = outerRadiuses[i];
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gearInfo.width = widths[i];
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gearInfo.numTeeth = toothCount[i];
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gearInfo.toothDepth = toothDepth[i];
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gearInfo.color = colors[i];
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gearInfo.pos = positions[i];
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gearInfo.rotSpeed = rotationSpeeds[i];
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gearInfo.rotOffset = rotationOffsets[i];
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gears[i] = new VulkanGear(vulkanDevice);
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gears[i]->generate(&gearInfo, queue);
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}
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// Binding and attribute descriptions are shared across all gears
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vertices.bindingDescriptions.resize(1);
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vertices.bindingDescriptions[0] =
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vks::initializers::vertexInputBindingDescription(
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VERTEX_BUFFER_BIND_ID,
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sizeof(Vertex),
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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(3);
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// Location 0 : Position
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vertices.attributeDescriptions[0] =
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vks::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 : Normal
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vertices.attributeDescriptions[1] =
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vks::initializers::vertexInputAttributeDescription(
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VERTEX_BUFFER_BIND_ID,
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1,
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VK_FORMAT_R32G32B32_SFLOAT,
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sizeof(float) * 3);
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// Location 2 : Color
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vertices.attributeDescriptions[2] =
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vks::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) * 6);
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vertices.inputState = vks::initializers::pipelineVertexInputStateCreateInfo();
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vertices.inputState.vertexBindingDescriptionCount = static_cast<uint32_t>(vertices.bindingDescriptions.size());
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vertices.inputState.pVertexBindingDescriptions = vertices.bindingDescriptions.data();
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vertices.inputState.vertexAttributeDescriptionCount = static_cast<uint32_t>(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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// One UBO for each gear
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std::vector<VkDescriptorPoolSize> poolSizes =
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{
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vks::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 3),
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};
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VkDescriptorPoolCreateInfo descriptorPoolInfo =
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vks::initializers::descriptorPoolCreateInfo(
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static_cast<uint32_t>(poolSizes.size()),
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poolSizes.data(),
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// Three descriptor sets (for each gear)
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3);
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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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vks::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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};
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VkDescriptorSetLayoutCreateInfo descriptorLayout =
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vks::initializers::descriptorSetLayoutCreateInfo(
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setLayoutBindings.data(),
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static_cast<uint32_t>(setLayoutBindings.size()));
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VK_CHECK_RESULT(vkCreateDescriptorSetLayout(device, &descriptorLayout, nullptr, &descriptorSetLayout));
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VkPipelineLayoutCreateInfo pPipelineLayoutCreateInfo =
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vks::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 setupDescriptorSets()
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{
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for (auto& gear : gears)
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{
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gear->setupDescriptorSet(descriptorPool, descriptorSetLayout);
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}
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}
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void preparePipelines()
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{
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VkPipelineInputAssemblyStateCreateInfo inputAssemblyState =
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vks::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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vks::initializers::pipelineRasterizationStateCreateInfo(
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VK_POLYGON_MODE_FILL,
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VK_CULL_MODE_BACK_BIT,
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VK_FRONT_FACE_CLOCKWISE,
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0);
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VkPipelineColorBlendAttachmentState blendAttachmentState =
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vks::initializers::pipelineColorBlendAttachmentState(
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0xf,
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VK_FALSE);
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VkPipelineColorBlendStateCreateInfo colorBlendState =
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vks::initializers::pipelineColorBlendStateCreateInfo(
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1,
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&blendAttachmentState);
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VkPipelineDepthStencilStateCreateInfo depthStencilState =
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vks::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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vks::initializers::pipelineViewportStateCreateInfo(1, 1, 0);
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VkPipelineMultisampleStateCreateInfo multisampleState =
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vks::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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vks::initializers::pipelineDynamicStateCreateInfo(
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dynamicStateEnables.data(),
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static_cast<uint32_t>(dynamicStateEnables.size()),
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0);
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// Solid rendering 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/gears/gears.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
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shaderStages[1] = loadShader(getAssetPath() + "shaders/gears/gears.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
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VkGraphicsPipelineCreateInfo pipelineCreateInfo =
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vks::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 = static_cast<uint32_t>(shaderStages.size());
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pipelineCreateInfo.pStages = shaderStages.data();
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VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCreateInfo, nullptr, &pipelines.solid));
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}
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void updateUniformBuffers()
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{
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glm::mat4 perspective = glm::perspective(glm::radians(60.0f), (float)width / (float)height, 0.001f, 256.0f);
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for (auto& gear : gears)
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{
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gear->updateUniformBuffer(perspective, rotation, zoom, timer * 360.0f);
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}
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}
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void draw()
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{
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VulkanExampleBase::prepareFrame();
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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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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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prepareVertices();
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setupDescriptorSetLayout();
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preparePipelines();
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setupDescriptorPool();
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setupDescriptorSets();
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updateUniformBuffers();
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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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vkDeviceWaitIdle(device);
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draw();
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vkDeviceWaitIdle(device);
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if (!paused)
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{
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updateUniformBuffers();
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}
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}
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virtual void viewChanged()
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{
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updateUniformBuffers();
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}
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};
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VULKAN_EXAMPLE_MAIN()
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