563 lines
16 KiB
C++
563 lines
16 KiB
C++
/*
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* Vulkan Example - Instanced mesh rendering
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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 <time.h>
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#include <vector>
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#define GLM_FORCE_RADIANS
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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 "vulkanexamplebase.h"
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#define VERTEX_BUFFER_BIND_ID 0
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//#define USE_GLSL
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#define ENABLE_VALIDATION false
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#define INSTANCING_RANGE 3
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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_NORMAL,
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vkMeshLoader::VERTEX_LAYOUT_UV,
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vkMeshLoader::VERTEX_LAYOUT_COLOR
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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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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 example;
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} meshes;
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// Number of mesh instances to be rendered
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uint32_t instanceCount;
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struct UboInstanceData{
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// Model matrix for each instance
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glm::mat4 model;
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// Color for each instance
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// vec4 is used due to memory alignment
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// GPU aligns at 16 bytes
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glm::vec4 color;
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};
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struct {
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// Global matrices
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struct {
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glm::mat4 projection;
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glm::mat4 view;
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} matrices;
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// Seperate data for each instance
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UboInstanceData *instance;
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} uboVS;
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struct {
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vkTools::UniformData vsScene;
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} uniformData;
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struct {
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VkPipeline solid;
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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 = -36.0f;
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rotationSpeed = 0.15f;
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rotation = glm::vec3(-20.0f, 45.0f, 0.0f);
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title = "Vulkan Example - Instanced mesh rendering";
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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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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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// Meshes
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vkMeshLoader::freeMeshBufferResources(device, &meshes.example);
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// Uniform buffers
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vkTools::destroyUniformData(device, &uniformData.vsScene);
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delete[] uboVS.instance;
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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 = { { 0.0f, 0.0f, 0.0f, 0.0f } };
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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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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.solid);
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VkDeviceSize offsets[1] = { 0 };
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vkCmdBindVertexBuffers(drawCmdBuffers[i], VERTEX_BUFFER_BIND_ID, 1, &meshes.example.vertices.buf, offsets);
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vkCmdBindIndexBuffer(drawCmdBuffers[i], meshes.example.indices.buf, 0, VK_INDEX_TYPE_UINT32);
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// Render instances
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vkCmdDrawIndexed(drawCmdBuffers[i], meshes.example.indexCount, instanceCount, 0, 0, 0);
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vkCmdEndRenderPass(drawCmdBuffers[i]);
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VkImageMemoryBarrier prePresentBarrier = vkTools::prePresentBarrier(swapChain.buffers[i].image);
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vkCmdPipelineBarrier(
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drawCmdBuffers[i],
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VK_PIPELINE_STAGE_ALL_COMMANDS_BIT,
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VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT,
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VK_FLAGS_NONE,
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0, nullptr,
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0, nullptr,
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1, &prePresentBarrier);
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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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VkSemaphore presentCompleteSemaphore;
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VkSemaphoreCreateInfo presentCompleteSemaphoreCreateInfo = vkTools::initializers::semaphoreCreateInfo();
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err = vkCreateSemaphore(device, &presentCompleteSemaphoreCreateInfo, nullptr, &presentCompleteSemaphore);
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assert(!err);
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// Get next image in the swap chain (back/front buffer)
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err = swapChain.acquireNextImage(presentCompleteSemaphore, ¤tBuffer);
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assert(!err);
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VkSubmitInfo submitInfo = vkTools::initializers::submitInfo();
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submitInfo.waitSemaphoreCount = 1;
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submitInfo.pWaitSemaphores = &presentCompleteSemaphore;
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submitInfo.commandBufferCount = 1;
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submitInfo.pCommandBuffers = &drawCmdBuffers[currentBuffer];
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// Submit draw command buffer
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err = vkQueueSubmit(queue, 1, &submitInfo, VK_NULL_HANDLE);
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assert(!err);
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err = swapChain.queuePresent(queue, currentBuffer);
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assert(!err);
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vkDestroySemaphore(device, presentCompleteSemaphore, nullptr);
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submitPostPresentBarrier(swapChain.buffers[currentBuffer].image);
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err = vkQueueWaitIdle(queue);
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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/angryteapot.X", &meshes.example, vertexLayout, 0.05f);
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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(4);
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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 : Normal
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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_R32G32B32_SFLOAT,
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sizeof(float) * 3);
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// Location 2 : Texture coordinates
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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_R32G32_SFLOAT,
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sizeof(float) * 6);
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// Location 3 : Color
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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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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 one ubo
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std::vector<VkDescriptorPoolSize> poolSizes =
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{
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vkTools::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 1),
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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,
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0),
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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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VkResult err = vkCreateDescriptorSetLayout(device, &descriptorLayout, nullptr, &descriptorSetLayout);
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assert(!err);
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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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err = vkCreatePipelineLayout(device, &pPipelineLayoutCreateInfo, nullptr, &pipelineLayout);
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assert(!err);
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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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VkResult vkRes = vkAllocateDescriptorSets(device, &allocInfo, &descriptorSet);
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assert(!vkRes);
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// Binding 0 : Vertex shader uniform buffer
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VkWriteDescriptorSet writeDescriptorSet =
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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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&uniformData.vsScene.descriptor);
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vkUpdateDescriptorSets(device, 1, &writeDescriptorSet, 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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// Instacing pipeline
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// Load shaders
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std::array<VkPipelineShaderStageCreateInfo, 2> shaderStages;
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#ifdef USE_GLSL
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shaderStages[0] = loadShaderGLSL("./../data/shaders/instancing/instancing.vert", VK_SHADER_STAGE_VERTEX_BIT);
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shaderStages[1] = loadShaderGLSL("./../data/shaders/instancing/instancing.frag", VK_SHADER_STAGE_FRAGMENT_BIT);
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#else
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shaderStages[0] = loadShader("./../data/shaders/instancing/instancing.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
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shaderStages[1] = loadShader("./../data/shaders/instancing/instancing.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
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#endif
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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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VkResult err = vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCreateInfo, nullptr, &pipelines.solid);
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assert(!err);
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}
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void prepareUniformBuffers()
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{
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instanceCount = pow((INSTANCING_RANGE * 2) + 1, 3);
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uboVS.instance = new UboInstanceData[instanceCount];
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VkResult err;
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// Vertex shader uniform buffer block
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uint32_t uboSize = sizeof(uboVS.matrices) + (instanceCount * sizeof(UboInstanceData));
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createBuffer(
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VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
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uboSize,
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nullptr,
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&uniformData.vsScene.buffer,
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&uniformData.vsScene.memory,
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&uniformData.vsScene.descriptor);
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VkBufferCreateInfo bufferInfo = vkTools::initializers::bufferCreateInfo(
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VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
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uboSize);
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// Colors and model matrices are fixed
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float offset = 5.0f;
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uint32_t index = 0;
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for (int32_t x = -INSTANCING_RANGE; x <= INSTANCING_RANGE; x++)
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{
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for (int32_t y = -INSTANCING_RANGE; y <= INSTANCING_RANGE; y++)
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{
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for (int32_t z = -INSTANCING_RANGE; z <= INSTANCING_RANGE; z++)
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{
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// Instance model matrix
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uboVS.instance[index].model = glm::translate(glm::mat4(), glm::vec3(x * offset, y * offset, z * offset));
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uboVS.instance[index].model = glm::rotate(uboVS.instance[index].model, deg_to_rad(-45.0f), glm::vec3(0.0f, 1.0f, 0.0f));
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// Instance color (randomized)
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uboVS.instance[index].color = glm::vec4((float)(rand() % 255) / 255.0f, (float)(rand() % 255) / 255.0f, (float)(rand() % 255) / 255.0f, 1.0);
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index++;
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}
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}
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}
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// Update instanced part of the uniform buffer
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uint8_t *pData;
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uint32_t dataOffset = sizeof(uboVS.matrices);
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uint32_t dataSize = instanceCount * sizeof(UboInstanceData);
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err = vkMapMemory(device, uniformData.vsScene.memory, dataOffset, dataSize, 0, (void **)&pData);
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assert(!err);
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memcpy(pData, uboVS.instance, dataSize);
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vkUnmapMemory(device, uniformData.vsScene.memory);
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updateUniformBufferMatrices();
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}
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void updateUniformBufferMatrices()
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{
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// Only updates the uniform buffer block part containing the global matrices
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// Projection
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uboVS.matrices.projection = glm::perspective(deg_to_rad(60.0f), (float)width / (float)height, 0.001f, 256.0f);
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// View
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uboVS.matrices.view = glm::translate(glm::mat4(), glm::vec3(0.0f, 0.0f, zoom));
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uboVS.matrices.view = glm::rotate(uboVS.matrices.view, deg_to_rad(rotation.x), glm::vec3(1.0f, 0.0f, 0.0f));
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uboVS.matrices.view = glm::rotate(uboVS.matrices.view, deg_to_rad(rotation.y), glm::vec3(0.0f, 1.0f, 0.0f));
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uboVS.matrices.view = glm::rotate(uboVS.matrices.view, deg_to_rad(rotation.z), glm::vec3(0.0f, 0.0f, 1.0f));
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// Only update the matrices part of the uniform buffer
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uint8_t *pData;
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VkResult err = vkMapMemory(device, uniformData.vsScene.memory, 0, sizeof(uboVS.matrices), 0, (void **)&pData);
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assert(!err);
|
|
memcpy(pData, &uboVS.matrices, sizeof(uboVS.matrices));
|
|
vkUnmapMemory(device, uniformData.vsScene.memory);
|
|
}
|
|
|
|
void prepare()
|
|
{
|
|
VulkanExampleBase::prepare();
|
|
loadMeshes();
|
|
setupVertexDescriptions();
|
|
prepareUniformBuffers();
|
|
setupDescriptorSetLayout();
|
|
preparePipelines();
|
|
setupDescriptorPool();
|
|
setupDescriptorSet();
|
|
buildCommandBuffers();
|
|
prepared = true;
|
|
}
|
|
|
|
virtual void render()
|
|
{
|
|
if (!prepared)
|
|
return;
|
|
vkDeviceWaitIdle(device);
|
|
draw();
|
|
vkDeviceWaitIdle(device);
|
|
}
|
|
|
|
virtual void viewChanged()
|
|
{
|
|
updateUniformBufferMatrices();
|
|
}
|
|
};
|
|
|
|
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;
|
|
}
|