ca884587a4
Move `data/shaders` to `data/shaders/glsl` Move `data/hlsl` to `data/shaders/hlsl` Fix up shader paths in the cpp files to point to the new glsl location. `data/shaders/hlsl/compile.py` still overwrites the glsl .spv files (for now). Issue: #723
614 lines
No EOL
22 KiB
C++
614 lines
No EOL
22 KiB
C++
/*
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* Vulkan Example - Instanced mesh rendering, uses a separate vertex buffer for instanced data
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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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#include <random>
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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 "vulkanexamplebase.h"
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#include "VulkanBuffer.hpp"
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#include "VulkanTexture.hpp"
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#include "VulkanModel.hpp"
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#define VERTEX_BUFFER_BIND_ID 0
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#define INSTANCE_BUFFER_BIND_ID 1
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#define ENABLE_VALIDATION false
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#if defined(__ANDROID__)
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#define INSTANCE_COUNT 4096
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#else
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#define INSTANCE_COUNT 8192
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#endif
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class VulkanExample : public VulkanExampleBase
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{
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public:
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struct {
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vks::Texture2DArray rocks;
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vks::Texture2D planet;
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} textures;
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// Vertex layout for the models
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vks::VertexLayout vertexLayout = vks::VertexLayout({
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vks::VERTEX_COMPONENT_POSITION,
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vks::VERTEX_COMPONENT_NORMAL,
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vks::VERTEX_COMPONENT_UV,
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vks::VERTEX_COMPONENT_COLOR,
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});
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struct {
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vks::Model rock;
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vks::Model planet;
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} models;
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// Per-instance data block
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struct InstanceData {
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glm::vec3 pos;
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glm::vec3 rot;
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float scale;
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uint32_t texIndex;
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};
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// Contains the instanced data
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struct InstanceBuffer {
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VkBuffer buffer = VK_NULL_HANDLE;
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VkDeviceMemory memory = VK_NULL_HANDLE;
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size_t size = 0;
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VkDescriptorBufferInfo descriptor;
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} instanceBuffer;
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struct UBOVS {
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glm::mat4 projection;
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glm::mat4 view;
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glm::vec4 lightPos = glm::vec4(0.0f, -5.0f, 0.0f, 1.0f);
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float locSpeed = 0.0f;
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float globSpeed = 0.0f;
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} uboVS;
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struct {
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vks::Buffer scene;
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} uniformBuffers;
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VkPipelineLayout pipelineLayout;
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struct {
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VkPipeline instancedRocks;
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VkPipeline planet;
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VkPipeline starfield;
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} pipelines;
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VkDescriptorSetLayout descriptorSetLayout;
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struct {
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VkDescriptorSet instancedRocks;
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VkDescriptorSet planet;
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} descriptorSets;
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VulkanExample() : VulkanExampleBase(ENABLE_VALIDATION)
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{
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title = "Instanced mesh rendering";
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camera.type = Camera::CameraType::lookat;
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camera.setPosition(glm::vec3(5.5f, -1.85f, -18.5f));
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camera.setRotation(glm::vec3(-17.2f, -4.7f, 0.0f));
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camera.setPerspective(60.0f, (float)width / (float)height, 1.0f, 256.0f);
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settings.overlay = true;
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}
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~VulkanExample()
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{
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vkDestroyPipeline(device, pipelines.instancedRocks, nullptr);
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vkDestroyPipeline(device, pipelines.planet, nullptr);
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vkDestroyPipeline(device, pipelines.starfield, nullptr);
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vkDestroyPipelineLayout(device, pipelineLayout, nullptr);
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vkDestroyDescriptorSetLayout(device, descriptorSetLayout, nullptr);
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vkDestroyBuffer(device, instanceBuffer.buffer, nullptr);
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vkFreeMemory(device, instanceBuffer.memory, nullptr);
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models.rock.destroy();
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models.planet.destroy();
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textures.rocks.destroy();
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textures.planet.destroy();
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uniformBuffers.scene.destroy();
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}
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// Enable physical device features required for this example
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virtual void getEnabledFeatures()
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{
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// Enable anisotropic filtering if supported
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if (deviceFeatures.samplerAnisotropy) {
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enabledFeatures.samplerAnisotropy = VK_TRUE;
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}
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// Enable texture compression
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if (deviceFeatures.textureCompressionBC) {
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enabledFeatures.textureCompressionBC = VK_TRUE;
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}
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else if (deviceFeatures.textureCompressionASTC_LDR) {
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enabledFeatures.textureCompressionASTC_LDR = VK_TRUE;
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}
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else if (deviceFeatures.textureCompressionETC2) {
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enabledFeatures.textureCompressionETC2 = VK_TRUE;
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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 = { { 0.0f, 0.0f, 0.2f, 0.0f } };
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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.extent.width = width;
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renderPassBeginInfo.renderArea.extent.height = height;
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renderPassBeginInfo.clearValueCount = 2;
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renderPassBeginInfo.pClearValues = clearValues;
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for (int32_t i = 0; i < drawCmdBuffers.size(); ++i)
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{
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// Set target frame buffer
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renderPassBeginInfo.framebuffer = frameBuffers[i];
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VK_CHECK_RESULT(vkBeginCommandBuffer(drawCmdBuffers[i], &cmdBufInfo));
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vkCmdBeginRenderPass(drawCmdBuffers[i], &renderPassBeginInfo, VK_SUBPASS_CONTENTS_INLINE);
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VkViewport viewport = vks::initializers::viewport((float)width, (float)height, 0.0f, 1.0f);
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vkCmdSetViewport(drawCmdBuffers[i], 0, 1, &viewport);
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VkRect2D scissor = vks::initializers::rect2D(width, height, 0, 0);
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vkCmdSetScissor(drawCmdBuffers[i], 0, 1, &scissor);
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VkDeviceSize offsets[1] = { 0 };
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// Star field
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vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSets.planet, 0, NULL);
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vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.starfield);
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vkCmdDraw(drawCmdBuffers[i], 4, 1, 0, 0);
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// Planet
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vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSets.planet, 0, NULL);
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vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.planet);
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vkCmdBindVertexBuffers(drawCmdBuffers[i], VERTEX_BUFFER_BIND_ID, 1, &models.planet.vertices.buffer, offsets);
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vkCmdBindIndexBuffer(drawCmdBuffers[i], models.planet.indices.buffer, 0, VK_INDEX_TYPE_UINT32);
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vkCmdDrawIndexed(drawCmdBuffers[i], models.planet.indexCount, 1, 0, 0, 0);
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// Instanced rocks
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vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSets.instancedRocks, 0, NULL);
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vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.instancedRocks);
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// Binding point 0 : Mesh vertex buffer
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vkCmdBindVertexBuffers(drawCmdBuffers[i], VERTEX_BUFFER_BIND_ID, 1, &models.rock.vertices.buffer, offsets);
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// Binding point 1 : Instance data buffer
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vkCmdBindVertexBuffers(drawCmdBuffers[i], INSTANCE_BUFFER_BIND_ID, 1, &instanceBuffer.buffer, offsets);
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vkCmdBindIndexBuffer(drawCmdBuffers[i], models.rock.indices.buffer, 0, VK_INDEX_TYPE_UINT32);
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// Render instances
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vkCmdDrawIndexed(drawCmdBuffers[i], models.rock.indexCount, INSTANCE_COUNT, 0, 0, 0);
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drawUI(drawCmdBuffers[i]);
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vkCmdEndRenderPass(drawCmdBuffers[i]);
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VK_CHECK_RESULT(vkEndCommandBuffer(drawCmdBuffers[i]));
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}
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}
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void loadAssets()
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{
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models.rock.loadFromFile(getAssetPath() + "models/rock01.dae", vertexLayout, 0.1f, vulkanDevice, queue);
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models.planet.loadFromFile(getAssetPath() + "models/sphere.obj", vertexLayout, 0.2f, vulkanDevice, queue);
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// Textures
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std::string texFormatSuffix;
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VkFormat texFormat;
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// Get supported compressed texture format
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if (vulkanDevice->features.textureCompressionBC) {
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texFormatSuffix = "_bc3_unorm";
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texFormat = VK_FORMAT_BC3_UNORM_BLOCK;
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}
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else if (vulkanDevice->features.textureCompressionASTC_LDR) {
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texFormatSuffix = "_astc_8x8_unorm";
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texFormat = VK_FORMAT_ASTC_8x8_UNORM_BLOCK;
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}
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else if (vulkanDevice->features.textureCompressionETC2) {
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texFormatSuffix = "_etc2_unorm";
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texFormat = VK_FORMAT_ETC2_R8G8B8_UNORM_BLOCK;
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}
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else {
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vks::tools::exitFatal("Device does not support any compressed texture format!", VK_ERROR_FEATURE_NOT_PRESENT);
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}
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textures.rocks.loadFromFile(getAssetPath() + "textures/texturearray_rocks" + texFormatSuffix + ".ktx", texFormat, vulkanDevice, queue);
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textures.planet.loadFromFile(getAssetPath() + "textures/lavaplanet" + texFormatSuffix + ".ktx", texFormat, vulkanDevice, queue);
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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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vks::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 2),
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vks::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 2),
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};
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VkDescriptorPoolCreateInfo descriptorPoolInfo =
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vks::initializers::descriptorPoolCreateInfo(
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poolSizes.size(),
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poolSizes.data(),
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2);
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VK_CHECK_RESULT(vkCreateDescriptorPool(device, &descriptorPoolInfo, nullptr, &descriptorPool));
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}
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void setupDescriptorSetLayout()
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{
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std::vector<VkDescriptorSetLayoutBinding> setLayoutBindings =
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{
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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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// Binding 1 : Fragment shader combined sampler
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vks::initializers::descriptorSetLayoutBinding(
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VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
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VK_SHADER_STAGE_FRAGMENT_BIT,
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1),
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};
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VkDescriptorSetLayoutCreateInfo descriptorLayout =
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vks::initializers::descriptorSetLayoutCreateInfo(
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setLayoutBindings.data(),
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setLayoutBindings.size());
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VK_CHECK_RESULT(vkCreateDescriptorSetLayout(device, &descriptorLayout, nullptr, &descriptorSetLayout));
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VkPipelineLayoutCreateInfo pPipelineLayoutCreateInfo =
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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 setupDescriptorSet()
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{
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VkDescriptorSetAllocateInfo descripotrSetAllocInfo;
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std::vector<VkWriteDescriptorSet> writeDescriptorSets;
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descripotrSetAllocInfo = vks::initializers::descriptorSetAllocateInfo(descriptorPool, &descriptorSetLayout, 1);;
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// Instanced rocks
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VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &descripotrSetAllocInfo, &descriptorSets.instancedRocks));
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writeDescriptorSets = {
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vks::initializers::writeDescriptorSet(descriptorSets.instancedRocks, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 0, &uniformBuffers.scene.descriptor), // Binding 0 : Vertex shader uniform buffer
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vks::initializers::writeDescriptorSet(descriptorSets.instancedRocks, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1, &textures.rocks.descriptor) // Binding 1 : Color map
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};
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vkUpdateDescriptorSets(device, writeDescriptorSets.size(), writeDescriptorSets.data(), 0, NULL);
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// Planet
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VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &descripotrSetAllocInfo, &descriptorSets.planet));
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writeDescriptorSets = {
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vks::initializers::writeDescriptorSet(descriptorSets.planet, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 0, &uniformBuffers.scene.descriptor), // Binding 0 : Vertex shader uniform buffer
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vks::initializers::writeDescriptorSet(descriptorSets.planet, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1, &textures.planet.descriptor) // Binding 1 : Color map
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};
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vkUpdateDescriptorSets(device, writeDescriptorSets.size(), writeDescriptorSets.data(), 0, NULL);
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}
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void preparePipelines()
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{
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VkPipelineInputAssemblyStateCreateInfo inputAssemblyState =
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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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dynamicStateEnables.size(),
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0);
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// Load shaders
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std::array<VkPipelineShaderStageCreateInfo, 2> shaderStages;
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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.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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// This example uses two different input states, one for the instanced part and one for non-instanced rendering
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VkPipelineVertexInputStateCreateInfo inputState = vks::initializers::pipelineVertexInputStateCreateInfo();
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std::vector<VkVertexInputBindingDescription> bindingDescriptions;
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std::vector<VkVertexInputAttributeDescription> attributeDescriptions;
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// Vertex input bindings
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// The instancing pipeline uses a vertex input state with two bindings
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bindingDescriptions = {
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// Binding point 0: Mesh vertex layout description at per-vertex rate
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vks::initializers::vertexInputBindingDescription(VERTEX_BUFFER_BIND_ID, vertexLayout.stride(), VK_VERTEX_INPUT_RATE_VERTEX),
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// Binding point 1: Instanced data at per-instance rate
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vks::initializers::vertexInputBindingDescription(INSTANCE_BUFFER_BIND_ID, sizeof(InstanceData), VK_VERTEX_INPUT_RATE_INSTANCE)
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};
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// Vertex attribute bindings
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// Note that the shader declaration for per-vertex and per-instance attributes is the same, the different input rates are only stored in the bindings:
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// instanced.vert:
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// layout (location = 0) in vec3 inPos; Per-Vertex
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// ...
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// layout (location = 4) in vec3 instancePos; Per-Instance
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attributeDescriptions = {
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// Per-vertex attributees
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// These are advanced for each vertex fetched by the vertex shader
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vks::initializers::vertexInputAttributeDescription(VERTEX_BUFFER_BIND_ID, 0, VK_FORMAT_R32G32B32_SFLOAT, 0), // Location 0: Position
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vks::initializers::vertexInputAttributeDescription(VERTEX_BUFFER_BIND_ID, 1, VK_FORMAT_R32G32B32_SFLOAT, sizeof(float) * 3), // Location 1: Normal
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vks::initializers::vertexInputAttributeDescription(VERTEX_BUFFER_BIND_ID, 2, VK_FORMAT_R32G32_SFLOAT, sizeof(float) * 6), // Location 2: Texture coordinates
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vks::initializers::vertexInputAttributeDescription(VERTEX_BUFFER_BIND_ID, 3, VK_FORMAT_R32G32B32_SFLOAT, sizeof(float) * 8), // Location 3: Color
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// Per-Instance attributes
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// These are fetched for each instance rendered
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vks::initializers::vertexInputAttributeDescription(INSTANCE_BUFFER_BIND_ID, 4, VK_FORMAT_R32G32B32_SFLOAT, 0), // Location 4: Position
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vks::initializers::vertexInputAttributeDescription(INSTANCE_BUFFER_BIND_ID, 5, VK_FORMAT_R32G32B32_SFLOAT, sizeof(float) * 3), // Location 5: Rotation
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vks::initializers::vertexInputAttributeDescription(INSTANCE_BUFFER_BIND_ID, 6, VK_FORMAT_R32_SFLOAT,sizeof(float) * 6), // Location 6: Scale
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vks::initializers::vertexInputAttributeDescription(INSTANCE_BUFFER_BIND_ID, 7, VK_FORMAT_R32_SINT, sizeof(float) * 7), // Location 7: Texture array layer index
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};
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inputState.pVertexBindingDescriptions = bindingDescriptions.data();
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inputState.pVertexAttributeDescriptions = attributeDescriptions.data();
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pipelineCreateInfo.pVertexInputState = &inputState;
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// Instancing pipeline
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shaderStages[0] = loadShader(getShadersPath() + "instancing/instancing.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
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shaderStages[1] = loadShader(getShadersPath() + "instancing/instancing.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
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// Use all input bindings and attribute descriptions
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inputState.vertexBindingDescriptionCount = static_cast<uint32_t>(bindingDescriptions.size());
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inputState.vertexAttributeDescriptionCount = static_cast<uint32_t>(attributeDescriptions.size());
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VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCreateInfo, nullptr, &pipelines.instancedRocks));
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// Planet rendering pipeline
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shaderStages[0] = loadShader(getShadersPath() + "instancing/planet.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
|
|
shaderStages[1] = loadShader(getShadersPath() + "instancing/planet.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
|
|
// Only use the non-instanced input bindings and attribute descriptions
|
|
inputState.vertexBindingDescriptionCount = 1;
|
|
inputState.vertexAttributeDescriptionCount = 4;
|
|
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCreateInfo, nullptr, &pipelines.planet));
|
|
|
|
// Star field pipeline
|
|
rasterizationState.cullMode = VK_CULL_MODE_NONE;
|
|
depthStencilState.depthWriteEnable = VK_FALSE;
|
|
shaderStages[0] = loadShader(getShadersPath() + "instancing/starfield.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
|
|
shaderStages[1] = loadShader(getShadersPath() + "instancing/starfield.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
|
|
// Vertices are generated in the vertex shader
|
|
inputState.vertexBindingDescriptionCount = 0;
|
|
inputState.vertexAttributeDescriptionCount = 0;
|
|
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCreateInfo, nullptr, &pipelines.starfield));
|
|
}
|
|
|
|
void prepareInstanceData()
|
|
{
|
|
std::vector<InstanceData> instanceData;
|
|
instanceData.resize(INSTANCE_COUNT);
|
|
|
|
std::default_random_engine rndGenerator(benchmark.active ? 0 : (unsigned)time(nullptr));
|
|
std::uniform_real_distribution<float> uniformDist(0.0, 1.0);
|
|
std::uniform_int_distribution<uint32_t> rndTextureIndex(0, textures.rocks.layerCount);
|
|
|
|
// Distribute rocks randomly on two different rings
|
|
for (auto i = 0; i < INSTANCE_COUNT / 2; i++) {
|
|
glm::vec2 ring0 { 7.0f, 11.0f };
|
|
glm::vec2 ring1 { 14.0f, 18.0f };
|
|
|
|
float rho, theta;
|
|
|
|
// Inner ring
|
|
rho = sqrt((pow(ring0[1], 2.0f) - pow(ring0[0], 2.0f)) * uniformDist(rndGenerator) + pow(ring0[0], 2.0f));
|
|
theta = 2.0 * M_PI * uniformDist(rndGenerator);
|
|
instanceData[i].pos = glm::vec3(rho*cos(theta), uniformDist(rndGenerator) * 0.5f - 0.25f, rho*sin(theta));
|
|
instanceData[i].rot = glm::vec3(M_PI * uniformDist(rndGenerator), M_PI * uniformDist(rndGenerator), M_PI * uniformDist(rndGenerator));
|
|
instanceData[i].scale = 1.5f + uniformDist(rndGenerator) - uniformDist(rndGenerator);
|
|
instanceData[i].texIndex = rndTextureIndex(rndGenerator);
|
|
instanceData[i].scale *= 0.75f;
|
|
|
|
// Outer ring
|
|
rho = sqrt((pow(ring1[1], 2.0f) - pow(ring1[0], 2.0f)) * uniformDist(rndGenerator) + pow(ring1[0], 2.0f));
|
|
theta = 2.0 * M_PI * uniformDist(rndGenerator);
|
|
instanceData[i + INSTANCE_COUNT / 2].pos = glm::vec3(rho*cos(theta), uniformDist(rndGenerator) * 0.5f - 0.25f, rho*sin(theta));
|
|
instanceData[i + INSTANCE_COUNT / 2].rot = glm::vec3(M_PI * uniformDist(rndGenerator), M_PI * uniformDist(rndGenerator), M_PI * uniformDist(rndGenerator));
|
|
instanceData[i + INSTANCE_COUNT / 2].scale = 1.5f + uniformDist(rndGenerator) - uniformDist(rndGenerator);
|
|
instanceData[i + INSTANCE_COUNT / 2].texIndex = rndTextureIndex(rndGenerator);
|
|
instanceData[i + INSTANCE_COUNT / 2].scale *= 0.75f;
|
|
}
|
|
|
|
instanceBuffer.size = instanceData.size() * sizeof(InstanceData);
|
|
|
|
// Staging
|
|
// Instanced data is static, copy to device local memory
|
|
// This results in better performance
|
|
|
|
struct {
|
|
VkDeviceMemory memory;
|
|
VkBuffer buffer;
|
|
} stagingBuffer;
|
|
|
|
VK_CHECK_RESULT(vulkanDevice->createBuffer(
|
|
VK_BUFFER_USAGE_TRANSFER_SRC_BIT,
|
|
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
|
|
instanceBuffer.size,
|
|
&stagingBuffer.buffer,
|
|
&stagingBuffer.memory,
|
|
instanceData.data()));
|
|
|
|
VK_CHECK_RESULT(vulkanDevice->createBuffer(
|
|
VK_BUFFER_USAGE_VERTEX_BUFFER_BIT | VK_BUFFER_USAGE_TRANSFER_DST_BIT,
|
|
VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT,
|
|
instanceBuffer.size,
|
|
&instanceBuffer.buffer,
|
|
&instanceBuffer.memory));
|
|
|
|
// Copy to staging buffer
|
|
VkCommandBuffer copyCmd = vulkanDevice->createCommandBuffer(VK_COMMAND_BUFFER_LEVEL_PRIMARY, true);
|
|
|
|
VkBufferCopy copyRegion = { };
|
|
copyRegion.size = instanceBuffer.size;
|
|
vkCmdCopyBuffer(
|
|
copyCmd,
|
|
stagingBuffer.buffer,
|
|
instanceBuffer.buffer,
|
|
1,
|
|
©Region);
|
|
|
|
vulkanDevice->flushCommandBuffer(copyCmd, queue, true);
|
|
|
|
instanceBuffer.descriptor.range = instanceBuffer.size;
|
|
instanceBuffer.descriptor.buffer = instanceBuffer.buffer;
|
|
instanceBuffer.descriptor.offset = 0;
|
|
|
|
// Destroy staging resources
|
|
vkDestroyBuffer(device, stagingBuffer.buffer, nullptr);
|
|
vkFreeMemory(device, stagingBuffer.memory, nullptr);
|
|
}
|
|
|
|
void prepareUniformBuffers()
|
|
{
|
|
VK_CHECK_RESULT(vulkanDevice->createBuffer(
|
|
VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
|
|
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
|
|
&uniformBuffers.scene,
|
|
sizeof(uboVS)));
|
|
|
|
// Map persistent
|
|
VK_CHECK_RESULT(uniformBuffers.scene.map());
|
|
|
|
updateUniformBuffer(true);
|
|
}
|
|
|
|
void updateUniformBuffer(bool viewChanged)
|
|
{
|
|
if (viewChanged)
|
|
{
|
|
uboVS.projection = camera.matrices.perspective;
|
|
uboVS.view = camera.matrices.view;
|
|
}
|
|
|
|
if (!paused)
|
|
{
|
|
uboVS.locSpeed += frameTimer * 0.35f;
|
|
uboVS.globSpeed += frameTimer * 0.01f;
|
|
}
|
|
|
|
memcpy(uniformBuffers.scene.mapped, &uboVS, sizeof(uboVS));
|
|
}
|
|
|
|
void draw()
|
|
{
|
|
VulkanExampleBase::prepareFrame();
|
|
|
|
// Command buffer to be sumitted to the queue
|
|
submitInfo.commandBufferCount = 1;
|
|
submitInfo.pCommandBuffers = &drawCmdBuffers[currentBuffer];
|
|
|
|
// Submit to queue
|
|
VK_CHECK_RESULT(vkQueueSubmit(queue, 1, &submitInfo, VK_NULL_HANDLE));
|
|
|
|
VulkanExampleBase::submitFrame();
|
|
}
|
|
|
|
void prepare()
|
|
{
|
|
VulkanExampleBase::prepare();
|
|
loadAssets();
|
|
prepareInstanceData();
|
|
prepareUniformBuffers();
|
|
setupDescriptorSetLayout();
|
|
preparePipelines();
|
|
setupDescriptorPool();
|
|
setupDescriptorSet();
|
|
buildCommandBuffers();
|
|
prepared = true;
|
|
}
|
|
|
|
virtual void render()
|
|
{
|
|
if (!prepared)
|
|
{
|
|
return;
|
|
}
|
|
draw();
|
|
if (!paused)
|
|
{
|
|
updateUniformBuffer(false);
|
|
}
|
|
}
|
|
|
|
virtual void viewChanged()
|
|
{
|
|
updateUniformBuffer(true);
|
|
}
|
|
|
|
virtual void OnUpdateUIOverlay(vks::UIOverlay *overlay)
|
|
{
|
|
if (overlay->header("Statistics")) {
|
|
overlay->text("Instances: %d", INSTANCE_COUNT);
|
|
}
|
|
}
|
|
};
|
|
|
|
VULKAN_EXAMPLE_MAIN() |