1192 lines
42 KiB
C++
1192 lines
42 KiB
C++
/*
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* Vulkan Example - Multi sampling with explicit resolve for deferred shading example
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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 "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 ENABLE_VALIDATION false
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class VulkanExample : public VulkanExampleBase
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{
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public:
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bool debugDisplay = false;
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bool useMSAA = true;
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bool useSampleShading = true;
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VkSampleCountFlagBits sampleCount = VK_SAMPLE_COUNT_1_BIT;
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struct {
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struct {
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vks::Texture2D colorMap;
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vks::Texture2D normalMap;
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} model;
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struct {
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vks::Texture2D colorMap;
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vks::Texture2D normalMap;
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} floor;
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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_UV,
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vks::VERTEX_COMPONENT_COLOR,
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vks::VERTEX_COMPONENT_NORMAL,
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vks::VERTEX_COMPONENT_TANGENT,
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});
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struct {
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vks::Model model;
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vks::Model floor;
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vks::Model quad;
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} models;
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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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glm::mat4 projection;
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glm::mat4 model;
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glm::mat4 view;
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glm::vec4 instancePos[3];
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} uboVS, uboOffscreenVS;
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struct Light {
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glm::vec4 position;
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glm::vec3 color;
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float radius;
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};
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struct {
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Light lights[6];
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glm::vec4 viewPos;
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glm::ivec2 windowSize;
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} uboFragmentLights;
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struct {
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vks::Buffer vsFullScreen;
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vks::Buffer vsOffscreen;
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vks::Buffer fsLights;
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} uniformBuffers;
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struct {
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VkPipeline deferred; // Deferred lighting calculation
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VkPipeline deferredNoMSAA; // Deferred lighting calculation with explicit MSAA resolve
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VkPipeline offscreen; // (Offscreen) scene rendering (fill G-Buffers)
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VkPipeline offscreenSampleShading; // (Offscreen) scene rendering (fill G-Buffers) with sample shading rate enabled
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VkPipeline debug; // G-Buffers debug display
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} pipelines;
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struct {
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VkPipelineLayout deferred;
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VkPipelineLayout offscreen;
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} pipelineLayouts;
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struct {
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VkDescriptorSet model;
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VkDescriptorSet floor;
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} descriptorSets;
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VkDescriptorSet descriptorSet;
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VkDescriptorSetLayout descriptorSetLayout;
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// Framebuffer for offscreen rendering
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struct FrameBufferAttachment {
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VkImage image;
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VkDeviceMemory mem;
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VkImageView view;
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VkFormat format;
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};
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struct FrameBuffer {
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int32_t width, height;
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VkFramebuffer frameBuffer;
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FrameBufferAttachment position, normal, albedo;
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FrameBufferAttachment depth;
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VkRenderPass renderPass;
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} offScreenFrameBuf;
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// One sampler for the frame buffer color attachments
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VkSampler colorSampler;
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VkCommandBuffer offScreenCmdBuffer = VK_NULL_HANDLE;
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// Semaphore used to synchronize between offscreen and final scene rendering
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VkSemaphore offscreenSemaphore = VK_NULL_HANDLE;
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VulkanExample() : VulkanExampleBase(ENABLE_VALIDATION)
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{
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title = "Multi sampled deferred shading";
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camera.type = Camera::CameraType::firstperson;
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camera.movementSpeed = 5.0f;
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#ifndef __ANDROID__
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camera.rotationSpeed = 0.25f;
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#endif
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camera.position = { 2.15f, 0.3f, -8.75f };
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camera.setRotation(glm::vec3(-0.75f, 12.5f, 0.0f));
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camera.setPerspective(60.0f, (float)width / (float)height, 0.1f, 256.0f);
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paused = true;
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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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vkDestroySampler(device, colorSampler, nullptr);
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// Frame buffer
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// Color attachments
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vkDestroyImageView(device, offScreenFrameBuf.position.view, nullptr);
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vkDestroyImage(device, offScreenFrameBuf.position.image, nullptr);
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vkFreeMemory(device, offScreenFrameBuf.position.mem, nullptr);
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vkDestroyImageView(device, offScreenFrameBuf.normal.view, nullptr);
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vkDestroyImage(device, offScreenFrameBuf.normal.image, nullptr);
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vkFreeMemory(device, offScreenFrameBuf.normal.mem, nullptr);
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vkDestroyImageView(device, offScreenFrameBuf.albedo.view, nullptr);
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vkDestroyImage(device, offScreenFrameBuf.albedo.image, nullptr);
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vkFreeMemory(device, offScreenFrameBuf.albedo.mem, nullptr);
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// Depth attachment
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vkDestroyImageView(device, offScreenFrameBuf.depth.view, nullptr);
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vkDestroyImage(device, offScreenFrameBuf.depth.image, nullptr);
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vkFreeMemory(device, offScreenFrameBuf.depth.mem, nullptr);
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vkDestroyFramebuffer(device, offScreenFrameBuf.frameBuffer, nullptr);
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vkDestroyPipeline(device, pipelines.deferred, nullptr);
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vkDestroyPipeline(device, pipelines.deferredNoMSAA, nullptr);
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vkDestroyPipeline(device, pipelines.offscreen, nullptr);
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vkDestroyPipeline(device, pipelines.offscreenSampleShading, nullptr);
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vkDestroyPipeline(device, pipelines.debug, nullptr);
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vkDestroyPipelineLayout(device, pipelineLayouts.deferred, nullptr);
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vkDestroyPipelineLayout(device, pipelineLayouts.offscreen, nullptr);
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vkDestroyDescriptorSetLayout(device, descriptorSetLayout, nullptr);
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// Meshes
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models.model.destroy();
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models.floor.destroy();
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// Uniform buffers
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uniformBuffers.vsOffscreen.destroy();
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uniformBuffers.vsFullScreen.destroy();
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uniformBuffers.fsLights.destroy();
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vkDestroyRenderPass(device, offScreenFrameBuf.renderPass, nullptr);
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textures.model.colorMap.destroy();
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textures.model.normalMap.destroy();
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textures.floor.colorMap.destroy();
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textures.floor.normalMap.destroy();
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vkDestroySemaphore(device, offscreenSemaphore, nullptr);
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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 sample rate shading filtering if supported
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if (deviceFeatures.sampleRateShading) {
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enabledFeatures.sampleRateShading = VK_TRUE;
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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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// Create a frame buffer attachment
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void createAttachment(
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VkFormat format,
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VkImageUsageFlagBits usage,
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FrameBufferAttachment *attachment)
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{
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VkImageAspectFlags aspectMask = 0;
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VkImageLayout imageLayout;
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attachment->format = format;
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if (usage & VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT)
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{
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aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
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imageLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
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}
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if (usage & VK_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT)
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{
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aspectMask = VK_IMAGE_ASPECT_DEPTH_BIT | VK_IMAGE_ASPECT_STENCIL_BIT;
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imageLayout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
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}
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assert(aspectMask > 0);
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VkImageCreateInfo image = vks::initializers::imageCreateInfo();
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image.imageType = VK_IMAGE_TYPE_2D;
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image.format = format;
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image.extent.width = offScreenFrameBuf.width;
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image.extent.height = offScreenFrameBuf.height;
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image.extent.depth = 1;
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image.mipLevels = 1;
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image.arrayLayers = 1;
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image.samples = sampleCount;
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image.tiling = VK_IMAGE_TILING_OPTIMAL;
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image.usage = usage | VK_IMAGE_USAGE_SAMPLED_BIT;
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VkMemoryAllocateInfo memAlloc = vks::initializers::memoryAllocateInfo();
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VkMemoryRequirements memReqs;
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VK_CHECK_RESULT(vkCreateImage(device, &image, nullptr, &attachment->image));
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vkGetImageMemoryRequirements(device, attachment->image, &memReqs);
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memAlloc.allocationSize = memReqs.size;
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memAlloc.memoryTypeIndex = vulkanDevice->getMemoryType(memReqs.memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);
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VK_CHECK_RESULT(vkAllocateMemory(device, &memAlloc, nullptr, &attachment->mem));
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VK_CHECK_RESULT(vkBindImageMemory(device, attachment->image, attachment->mem, 0));
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VkImageViewCreateInfo imageView = vks::initializers::imageViewCreateInfo();
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imageView.viewType = VK_IMAGE_VIEW_TYPE_2D;
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imageView.format = format;
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imageView.subresourceRange = {};
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imageView.subresourceRange.aspectMask = aspectMask;
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imageView.subresourceRange.baseMipLevel = 0;
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imageView.subresourceRange.levelCount = 1;
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imageView.subresourceRange.baseArrayLayer = 0;
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imageView.subresourceRange.layerCount = 1;
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imageView.image = attachment->image;
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VK_CHECK_RESULT(vkCreateImageView(device, &imageView, nullptr, &attachment->view));
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}
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// Prepare a new framebuffer for offscreen rendering
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// The contents of this framebuffer are then
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// blitted to our render target
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void prepareOffscreenFramebuffer()
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{
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offScreenFrameBuf.width = this->width;
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offScreenFrameBuf.height = this->height;
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//offScreenFrameBuf.width = FB_DIM;
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//offScreenFrameBuf.height = FB_DIM;
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// Color attachments
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// (World space) Positions
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createAttachment(
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VK_FORMAT_R16G16B16A16_SFLOAT,
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VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT,
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&offScreenFrameBuf.position);
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// (World space) Normals
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createAttachment(
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VK_FORMAT_R16G16B16A16_SFLOAT,
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VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT,
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&offScreenFrameBuf.normal);
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// Albedo (color)
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createAttachment(
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VK_FORMAT_R8G8B8A8_UNORM,
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VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT,
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&offScreenFrameBuf.albedo);
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// Depth attachment
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// Find a suitable depth format
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VkFormat attDepthFormat;
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VkBool32 validDepthFormat = vks::tools::getSupportedDepthFormat(physicalDevice, &attDepthFormat);
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assert(validDepthFormat);
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createAttachment(
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attDepthFormat,
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VK_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT,
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&offScreenFrameBuf.depth);
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// Set up separate renderpass with references
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// to the color and depth attachments
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std::array<VkAttachmentDescription, 4> attachmentDescs = {};
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// Init attachment properties
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for (uint32_t i = 0; i < 4; ++i)
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{
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attachmentDescs[i].samples = sampleCount;
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attachmentDescs[i].loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
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attachmentDescs[i].storeOp = VK_ATTACHMENT_STORE_OP_STORE;
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attachmentDescs[i].stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
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attachmentDescs[i].stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
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if (i == 3)
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{
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attachmentDescs[i].initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
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attachmentDescs[i].finalLayout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
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}
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else
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{
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attachmentDescs[i].initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
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attachmentDescs[i].finalLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
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}
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}
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// Formats
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attachmentDescs[0].format = offScreenFrameBuf.position.format;
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attachmentDescs[1].format = offScreenFrameBuf.normal.format;
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attachmentDescs[2].format = offScreenFrameBuf.albedo.format;
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attachmentDescs[3].format = offScreenFrameBuf.depth.format;
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std::vector<VkAttachmentReference> colorReferences;
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colorReferences.push_back({ 0, VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL });
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colorReferences.push_back({ 1, VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL });
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colorReferences.push_back({ 2, VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL });
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VkAttachmentReference depthReference = {};
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depthReference.attachment = 3;
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depthReference.layout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
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VkSubpassDescription subpass = {};
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subpass.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
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subpass.pColorAttachments = colorReferences.data();
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subpass.colorAttachmentCount = static_cast<uint32_t>(colorReferences.size());
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subpass.pDepthStencilAttachment = &depthReference;
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// Use subpass dependencies for attachment layput transitions
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std::array<VkSubpassDependency, 2> dependencies;
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dependencies[0].srcSubpass = VK_SUBPASS_EXTERNAL;
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dependencies[0].dstSubpass = 0;
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dependencies[0].srcStageMask = VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT;
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dependencies[0].dstStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
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dependencies[0].srcAccessMask = VK_ACCESS_MEMORY_READ_BIT;
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dependencies[0].dstAccessMask = VK_ACCESS_COLOR_ATTACHMENT_READ_BIT | VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
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dependencies[0].dependencyFlags = VK_DEPENDENCY_BY_REGION_BIT;
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dependencies[1].srcSubpass = 0;
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dependencies[1].dstSubpass = VK_SUBPASS_EXTERNAL;
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dependencies[1].srcStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
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dependencies[1].dstStageMask = VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT;
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dependencies[1].srcAccessMask = VK_ACCESS_COLOR_ATTACHMENT_READ_BIT | VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
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dependencies[1].dstAccessMask = VK_ACCESS_MEMORY_READ_BIT;
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dependencies[1].dependencyFlags = VK_DEPENDENCY_BY_REGION_BIT;
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VkRenderPassCreateInfo renderPassInfo = {};
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renderPassInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
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renderPassInfo.pAttachments = attachmentDescs.data();
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renderPassInfo.attachmentCount = static_cast<uint32_t>(attachmentDescs.size());
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renderPassInfo.subpassCount = 1;
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renderPassInfo.pSubpasses = &subpass;
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renderPassInfo.dependencyCount = 2;
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renderPassInfo.pDependencies = dependencies.data();
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VK_CHECK_RESULT(vkCreateRenderPass(device, &renderPassInfo, nullptr, &offScreenFrameBuf.renderPass));
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std::array<VkImageView,4> attachments;
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attachments[0] = offScreenFrameBuf.position.view;
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attachments[1] = offScreenFrameBuf.normal.view;
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attachments[2] = offScreenFrameBuf.albedo.view;
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attachments[3] = offScreenFrameBuf.depth.view;
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VkFramebufferCreateInfo fbufCreateInfo = {};
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fbufCreateInfo.sType = VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO;
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fbufCreateInfo.pNext = NULL;
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fbufCreateInfo.renderPass = offScreenFrameBuf.renderPass;
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fbufCreateInfo.pAttachments = attachments.data();
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fbufCreateInfo.attachmentCount = static_cast<uint32_t>(attachments.size());
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fbufCreateInfo.width = offScreenFrameBuf.width;
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fbufCreateInfo.height = offScreenFrameBuf.height;
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fbufCreateInfo.layers = 1;
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VK_CHECK_RESULT(vkCreateFramebuffer(device, &fbufCreateInfo, nullptr, &offScreenFrameBuf.frameBuffer));
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// Create sampler to sample from the color attachments
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VkSamplerCreateInfo sampler = vks::initializers::samplerCreateInfo();
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sampler.magFilter = VK_FILTER_NEAREST;
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sampler.minFilter = VK_FILTER_NEAREST;
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sampler.mipmapMode = VK_SAMPLER_MIPMAP_MODE_LINEAR;
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sampler.addressModeU = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
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sampler.addressModeV = sampler.addressModeU;
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sampler.addressModeW = sampler.addressModeU;
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sampler.mipLodBias = 0.0f;
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sampler.maxAnisotropy = 1.0f;
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sampler.minLod = 0.0f;
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sampler.minLod = 0.0f;
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sampler.maxLod = 1.0f;
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sampler.borderColor = VK_BORDER_COLOR_FLOAT_OPAQUE_WHITE;
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VK_CHECK_RESULT(vkCreateSampler(device, &sampler, nullptr, &colorSampler));
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}
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// Build command buffer for rendering the scene to the offscreen frame buffer attachments
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void buildDeferredCommandBuffer()
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{
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if (offScreenCmdBuffer == VK_NULL_HANDLE) {
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offScreenCmdBuffer = vulkanDevice->createCommandBuffer(VK_COMMAND_BUFFER_LEVEL_PRIMARY, false);
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}
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// Create a semaphore used to synchronize offscreen rendering and usage
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if (offscreenSemaphore == VK_NULL_HANDLE) {
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VkSemaphoreCreateInfo semaphoreCreateInfo = vks::initializers::semaphoreCreateInfo();
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VK_CHECK_RESULT(vkCreateSemaphore(device, &semaphoreCreateInfo, nullptr, &offscreenSemaphore));
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}
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VkCommandBufferBeginInfo cmdBufInfo = vks::initializers::commandBufferBeginInfo();
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// Clear values for all attachments written in the fragment sahder
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std::array<VkClearValue,4> clearValues;
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clearValues[0].color = clearValues[1].color = { { 0.0f, 0.0f, 0.0f, 0.0f } };
|
|
clearValues[2].color = { { 0.0f, 0.0f, 0.0f, 0.0f } };
|
|
clearValues[3].depthStencil = { 1.0f, 0 };
|
|
|
|
VkRenderPassBeginInfo renderPassBeginInfo = vks::initializers::renderPassBeginInfo();
|
|
renderPassBeginInfo.renderPass = offScreenFrameBuf.renderPass;
|
|
renderPassBeginInfo.framebuffer = offScreenFrameBuf.frameBuffer;
|
|
renderPassBeginInfo.renderArea.extent.width = offScreenFrameBuf.width;
|
|
renderPassBeginInfo.renderArea.extent.height = offScreenFrameBuf.height;
|
|
renderPassBeginInfo.clearValueCount = static_cast<uint32_t>(clearValues.size());
|
|
renderPassBeginInfo.pClearValues = clearValues.data();
|
|
|
|
VK_CHECK_RESULT(vkBeginCommandBuffer(offScreenCmdBuffer, &cmdBufInfo));
|
|
|
|
vkCmdBeginRenderPass(offScreenCmdBuffer, &renderPassBeginInfo, VK_SUBPASS_CONTENTS_INLINE);
|
|
|
|
VkViewport viewport = vks::initializers::viewport((float)offScreenFrameBuf.width, (float)offScreenFrameBuf.height, 0.0f, 1.0f);
|
|
vkCmdSetViewport(offScreenCmdBuffer, 0, 1, &viewport);
|
|
|
|
VkRect2D scissor = vks::initializers::rect2D(offScreenFrameBuf.width, offScreenFrameBuf.height, 0, 0);
|
|
vkCmdSetScissor(offScreenCmdBuffer, 0, 1, &scissor);
|
|
|
|
vkCmdBindPipeline(offScreenCmdBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, useSampleShading ? pipelines.offscreenSampleShading : pipelines.offscreen);
|
|
|
|
VkDeviceSize offsets[1] = { 0 };
|
|
|
|
// Background
|
|
vkCmdBindDescriptorSets(offScreenCmdBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayouts.offscreen, 0, 1, &descriptorSets.floor, 0, NULL);
|
|
vkCmdBindVertexBuffers(offScreenCmdBuffer, VERTEX_BUFFER_BIND_ID, 1, &models.floor.vertices.buffer, offsets);
|
|
vkCmdBindIndexBuffer(offScreenCmdBuffer, models.floor.indices.buffer, 0, VK_INDEX_TYPE_UINT32);
|
|
vkCmdDrawIndexed(offScreenCmdBuffer, models.floor.indexCount, 1, 0, 0, 0);
|
|
|
|
// Object
|
|
vkCmdBindDescriptorSets(offScreenCmdBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayouts.offscreen, 0, 1, &descriptorSets.model, 0, NULL);
|
|
vkCmdBindVertexBuffers(offScreenCmdBuffer, VERTEX_BUFFER_BIND_ID, 1, &models.model.vertices.buffer, offsets);
|
|
vkCmdBindIndexBuffer(offScreenCmdBuffer, models.model.indices.buffer, 0, VK_INDEX_TYPE_UINT32);
|
|
vkCmdDrawIndexed(offScreenCmdBuffer, models.model.indexCount, 3, 0, 0, 0);
|
|
|
|
vkCmdEndRenderPass(offScreenCmdBuffer);
|
|
|
|
VK_CHECK_RESULT(vkEndCommandBuffer(offScreenCmdBuffer));
|
|
}
|
|
|
|
void buildCommandBuffers()
|
|
{
|
|
VkCommandBufferBeginInfo cmdBufInfo = vks::initializers::commandBufferBeginInfo();
|
|
|
|
VkClearValue clearValues[2];
|
|
clearValues[0].color = { { 1.0f, 1.0f, 1.0f, 0.0f } };
|
|
clearValues[1].depthStencil = { 1.0f, 0 };
|
|
|
|
VkRenderPassBeginInfo renderPassBeginInfo = vks::initializers::renderPassBeginInfo();
|
|
renderPassBeginInfo.renderPass = renderPass;
|
|
renderPassBeginInfo.renderArea.offset.x = 0;
|
|
renderPassBeginInfo.renderArea.offset.y = 0;
|
|
renderPassBeginInfo.renderArea.extent.width = width;
|
|
renderPassBeginInfo.renderArea.extent.height = height;
|
|
renderPassBeginInfo.clearValueCount = 2;
|
|
renderPassBeginInfo.pClearValues = clearValues;
|
|
|
|
for (int32_t i = 0; i < drawCmdBuffers.size(); ++i)
|
|
{
|
|
// Set target frame buffer
|
|
renderPassBeginInfo.framebuffer = frameBuffers[i];
|
|
|
|
VK_CHECK_RESULT(vkBeginCommandBuffer(drawCmdBuffers[i], &cmdBufInfo));
|
|
|
|
vkCmdBeginRenderPass(drawCmdBuffers[i], &renderPassBeginInfo, VK_SUBPASS_CONTENTS_INLINE);
|
|
|
|
VkViewport viewport = vks::initializers::viewport((float)width, (float)height, 0.0f, 1.0f);
|
|
vkCmdSetViewport(drawCmdBuffers[i], 0, 1, &viewport);
|
|
|
|
VkRect2D scissor = vks::initializers::rect2D(width, height, 0, 0);
|
|
vkCmdSetScissor(drawCmdBuffers[i], 0, 1, &scissor);
|
|
|
|
vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayouts.deferred, 0, 1, &descriptorSet, 0, NULL);
|
|
|
|
if (debugDisplay)
|
|
{
|
|
vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.debug);
|
|
vkCmdDraw(drawCmdBuffers[i], 3, 1, 0, 0);
|
|
// Move viewport to display final composition in lower right corner
|
|
viewport.x = viewport.width * 0.5f;
|
|
viewport.y = viewport.height * 0.5f;
|
|
viewport.width = (float)width * 0.5f;
|
|
viewport.height = (float)height * 0.5f;
|
|
vkCmdSetViewport(drawCmdBuffers[i], 0, 1, &viewport);
|
|
}
|
|
|
|
camera.updateAspectRatio((float)viewport.width / (float)viewport.height);
|
|
|
|
// Final composition as full screen quad
|
|
vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, useMSAA ? pipelines.deferred : pipelines.deferredNoMSAA);
|
|
vkCmdDraw(drawCmdBuffers[i], 3, 1, 0, 0);
|
|
|
|
drawUI(drawCmdBuffers[i]);
|
|
|
|
vkCmdEndRenderPass(drawCmdBuffers[i]);
|
|
|
|
VK_CHECK_RESULT(vkEndCommandBuffer(drawCmdBuffers[i]));
|
|
}
|
|
}
|
|
|
|
void loadAssets()
|
|
{
|
|
models.model.loadFromFile(getAssetPath() + "models/armor/armor.dae", vertexLayout, 1.0f, vulkanDevice, queue);
|
|
|
|
vks::ModelCreateInfo modelCreateInfo;
|
|
modelCreateInfo.scale = glm::vec3(15.0f);
|
|
modelCreateInfo.uvscale = glm::vec2(8.0f, 8.0f);
|
|
modelCreateInfo.center = glm::vec3(0.0f, 2.3f, 0.0f);
|
|
models.floor.loadFromFile(getAssetPath() + "models/openbox.dae", vertexLayout, &modelCreateInfo, vulkanDevice, queue);
|
|
|
|
// Textures
|
|
std::string texFormatSuffix;
|
|
VkFormat texFormat;
|
|
// Get supported compressed texture format
|
|
if (vulkanDevice->features.textureCompressionBC) {
|
|
texFormatSuffix = "_bc3_unorm";
|
|
texFormat = VK_FORMAT_BC3_UNORM_BLOCK;
|
|
}
|
|
else if (vulkanDevice->features.textureCompressionASTC_LDR) {
|
|
texFormatSuffix = "_astc_8x8_unorm";
|
|
texFormat = VK_FORMAT_ASTC_8x8_UNORM_BLOCK;
|
|
}
|
|
else if (vulkanDevice->features.textureCompressionETC2) {
|
|
texFormatSuffix = "_etc2_unorm";
|
|
texFormat = VK_FORMAT_ETC2_R8G8B8A8_UNORM_BLOCK;
|
|
}
|
|
else {
|
|
vks::tools::exitFatal("Device does not support any compressed texture format!", VK_ERROR_FEATURE_NOT_PRESENT);
|
|
}
|
|
|
|
textures.model.colorMap.loadFromFile(getAssetPath() + "models/armor/color" + texFormatSuffix + ".ktx", texFormat, vulkanDevice, queue);
|
|
textures.model.normalMap.loadFromFile(getAssetPath() + "models/armor/normal" + texFormatSuffix + ".ktx", texFormat, vulkanDevice, queue);
|
|
textures.floor.colorMap.loadFromFile(getAssetPath() + "textures/stonefloor02_color" + texFormatSuffix + ".ktx", texFormat, vulkanDevice, queue);
|
|
textures.floor.normalMap.loadFromFile(getAssetPath() + "textures/stonefloor02_normal" + texFormatSuffix + ".ktx", texFormat, vulkanDevice, queue);
|
|
}
|
|
|
|
void setupVertexDescriptions()
|
|
{
|
|
// Binding description
|
|
vertices.bindingDescriptions.resize(1);
|
|
vertices.bindingDescriptions[0] =
|
|
vks::initializers::vertexInputBindingDescription(
|
|
VERTEX_BUFFER_BIND_ID,
|
|
vertexLayout.stride(),
|
|
VK_VERTEX_INPUT_RATE_VERTEX);
|
|
|
|
// Attribute descriptions
|
|
vertices.attributeDescriptions.resize(5);
|
|
// Location 0: Position
|
|
vertices.attributeDescriptions[0] =
|
|
vks::initializers::vertexInputAttributeDescription(
|
|
VERTEX_BUFFER_BIND_ID,
|
|
0,
|
|
VK_FORMAT_R32G32B32_SFLOAT,
|
|
0);
|
|
// Location 1: Texture coordinates
|
|
vertices.attributeDescriptions[1] =
|
|
vks::initializers::vertexInputAttributeDescription(
|
|
VERTEX_BUFFER_BIND_ID,
|
|
1,
|
|
VK_FORMAT_R32G32_SFLOAT,
|
|
sizeof(float) * 3);
|
|
// Location 2: Color
|
|
vertices.attributeDescriptions[2] =
|
|
vks::initializers::vertexInputAttributeDescription(
|
|
VERTEX_BUFFER_BIND_ID,
|
|
2,
|
|
VK_FORMAT_R32G32B32_SFLOAT,
|
|
sizeof(float) * 5);
|
|
// Location 3: Normal
|
|
vertices.attributeDescriptions[3] =
|
|
vks::initializers::vertexInputAttributeDescription(
|
|
VERTEX_BUFFER_BIND_ID,
|
|
3,
|
|
VK_FORMAT_R32G32B32_SFLOAT,
|
|
sizeof(float) * 8);
|
|
// Location 4: Tangent
|
|
vertices.attributeDescriptions[4] =
|
|
vks::initializers::vertexInputAttributeDescription(
|
|
VERTEX_BUFFER_BIND_ID,
|
|
4,
|
|
VK_FORMAT_R32G32B32_SFLOAT,
|
|
sizeof(float) * 11);
|
|
|
|
vertices.inputState = vks::initializers::pipelineVertexInputStateCreateInfo();
|
|
vertices.inputState.vertexBindingDescriptionCount = static_cast<uint32_t>(vertices.bindingDescriptions.size());
|
|
vertices.inputState.pVertexBindingDescriptions = vertices.bindingDescriptions.data();
|
|
vertices.inputState.vertexAttributeDescriptionCount = static_cast<uint32_t>(vertices.attributeDescriptions.size());
|
|
vertices.inputState.pVertexAttributeDescriptions = vertices.attributeDescriptions.data();
|
|
}
|
|
|
|
void setupDescriptorPool()
|
|
{
|
|
std::vector<VkDescriptorPoolSize> poolSizes =
|
|
{
|
|
vks::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 8),
|
|
vks::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 9)
|
|
};
|
|
|
|
VkDescriptorPoolCreateInfo descriptorPoolInfo =
|
|
vks::initializers::descriptorPoolCreateInfo(
|
|
static_cast<uint32_t>(poolSizes.size()),
|
|
poolSizes.data(),
|
|
3);
|
|
|
|
VK_CHECK_RESULT(vkCreateDescriptorPool(device, &descriptorPoolInfo, nullptr, &descriptorPool));
|
|
}
|
|
|
|
void setupDescriptorSetLayout()
|
|
{
|
|
// Deferred shading layout
|
|
std::vector<VkDescriptorSetLayoutBinding> setLayoutBindings =
|
|
{
|
|
// Binding 0 : Vertex shader uniform buffer
|
|
vks::initializers::descriptorSetLayoutBinding(
|
|
VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
|
|
VK_SHADER_STAGE_VERTEX_BIT,
|
|
0),
|
|
// Binding 1 : Position texture target / Scene colormap
|
|
vks::initializers::descriptorSetLayoutBinding(
|
|
VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
|
|
VK_SHADER_STAGE_FRAGMENT_BIT,
|
|
1),
|
|
// Binding 2 : Normals texture target
|
|
vks::initializers::descriptorSetLayoutBinding(
|
|
VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
|
|
VK_SHADER_STAGE_FRAGMENT_BIT,
|
|
2),
|
|
// Binding 3 : Albedo texture target
|
|
vks::initializers::descriptorSetLayoutBinding(
|
|
VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
|
|
VK_SHADER_STAGE_FRAGMENT_BIT,
|
|
3),
|
|
// Binding 4 : Fragment shader uniform buffer
|
|
vks::initializers::descriptorSetLayoutBinding(
|
|
VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
|
|
VK_SHADER_STAGE_FRAGMENT_BIT,
|
|
4),
|
|
};
|
|
|
|
VkDescriptorSetLayoutCreateInfo descriptorLayout =
|
|
vks::initializers::descriptorSetLayoutCreateInfo(
|
|
setLayoutBindings.data(),
|
|
static_cast<uint32_t>(setLayoutBindings.size()));
|
|
|
|
VK_CHECK_RESULT(vkCreateDescriptorSetLayout(device, &descriptorLayout, nullptr, &descriptorSetLayout));
|
|
|
|
VkPipelineLayoutCreateInfo pPipelineLayoutCreateInfo =
|
|
vks::initializers::pipelineLayoutCreateInfo(
|
|
&descriptorSetLayout,
|
|
1);
|
|
|
|
VK_CHECK_RESULT(vkCreatePipelineLayout(device, &pPipelineLayoutCreateInfo, nullptr, &pipelineLayouts.deferred));
|
|
|
|
// Offscreen (scene) rendering pipeline layout
|
|
VK_CHECK_RESULT(vkCreatePipelineLayout(device, &pPipelineLayoutCreateInfo, nullptr, &pipelineLayouts.offscreen));
|
|
}
|
|
|
|
void setupDescriptorSet()
|
|
{
|
|
std::vector<VkWriteDescriptorSet> writeDescriptorSets;
|
|
|
|
// Textured quad descriptor set
|
|
VkDescriptorSetAllocateInfo allocInfo =
|
|
vks::initializers::descriptorSetAllocateInfo(
|
|
descriptorPool,
|
|
&descriptorSetLayout,
|
|
1);
|
|
|
|
VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &allocInfo, &descriptorSet));
|
|
|
|
// Image descriptors for the offscreen color attachments
|
|
VkDescriptorImageInfo texDescriptorPosition =
|
|
vks::initializers::descriptorImageInfo(
|
|
colorSampler,
|
|
offScreenFrameBuf.position.view,
|
|
VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL);
|
|
|
|
VkDescriptorImageInfo texDescriptorNormal =
|
|
vks::initializers::descriptorImageInfo(
|
|
colorSampler,
|
|
offScreenFrameBuf.normal.view,
|
|
VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL);
|
|
|
|
VkDescriptorImageInfo texDescriptorAlbedo =
|
|
vks::initializers::descriptorImageInfo(
|
|
colorSampler,
|
|
offScreenFrameBuf.albedo.view,
|
|
VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL);
|
|
|
|
writeDescriptorSets = {
|
|
// Binding 0 : Vertex shader uniform buffer
|
|
vks::initializers::writeDescriptorSet(
|
|
descriptorSet,
|
|
VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
|
|
0,
|
|
&uniformBuffers.vsFullScreen.descriptor),
|
|
// Binding 1 : Position texture target
|
|
vks::initializers::writeDescriptorSet(
|
|
descriptorSet,
|
|
VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
|
|
1,
|
|
&texDescriptorPosition),
|
|
// Binding 2 : Normals texture target
|
|
vks::initializers::writeDescriptorSet(
|
|
descriptorSet,
|
|
VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
|
|
2,
|
|
&texDescriptorNormal),
|
|
// Binding 3 : Albedo texture target
|
|
vks::initializers::writeDescriptorSet(
|
|
descriptorSet,
|
|
VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
|
|
3,
|
|
&texDescriptorAlbedo),
|
|
// Binding 4 : Fragment shader uniform buffer
|
|
vks::initializers::writeDescriptorSet(
|
|
descriptorSet,
|
|
VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
|
|
4,
|
|
&uniformBuffers.fsLights.descriptor),
|
|
};
|
|
|
|
vkUpdateDescriptorSets(device, static_cast<uint32_t>(writeDescriptorSets.size()), writeDescriptorSets.data(), 0, NULL);
|
|
|
|
// Offscreen (scene)
|
|
|
|
// Model
|
|
VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &allocInfo, &descriptorSets.model));
|
|
writeDescriptorSets =
|
|
{
|
|
// Binding 0: Vertex shader uniform buffer
|
|
vks::initializers::writeDescriptorSet(
|
|
descriptorSets.model,
|
|
VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
|
|
0,
|
|
&uniformBuffers.vsOffscreen.descriptor),
|
|
// Binding 1: Color map
|
|
vks::initializers::writeDescriptorSet(
|
|
descriptorSets.model,
|
|
VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
|
|
1,
|
|
&textures.model.colorMap.descriptor),
|
|
// Binding 2: Normal map
|
|
vks::initializers::writeDescriptorSet(
|
|
descriptorSets.model,
|
|
VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
|
|
2,
|
|
&textures.model.normalMap.descriptor)
|
|
};
|
|
vkUpdateDescriptorSets(device, static_cast<uint32_t>(writeDescriptorSets.size()), writeDescriptorSets.data(), 0, NULL);
|
|
|
|
// Backbround
|
|
VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &allocInfo, &descriptorSets.floor));
|
|
writeDescriptorSets =
|
|
{
|
|
// Binding 0: Vertex shader uniform buffer
|
|
vks::initializers::writeDescriptorSet(
|
|
descriptorSets.floor,
|
|
VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
|
|
0,
|
|
&uniformBuffers.vsOffscreen.descriptor),
|
|
// Binding 1: Color map
|
|
vks::initializers::writeDescriptorSet(
|
|
descriptorSets.floor,
|
|
VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
|
|
1,
|
|
&textures.floor.colorMap.descriptor),
|
|
// Binding 2: Normal map
|
|
vks::initializers::writeDescriptorSet(
|
|
descriptorSets.floor,
|
|
VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
|
|
2,
|
|
&textures.floor.normalMap.descriptor)
|
|
};
|
|
vkUpdateDescriptorSets(device, static_cast<uint32_t>(writeDescriptorSets.size()), writeDescriptorSets.data(), 0, NULL);
|
|
}
|
|
|
|
void preparePipelines()
|
|
{
|
|
VkPipelineInputAssemblyStateCreateInfo inputAssemblyState =
|
|
vks::initializers::pipelineInputAssemblyStateCreateInfo(
|
|
VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST,
|
|
0,
|
|
VK_FALSE);
|
|
|
|
VkPipelineRasterizationStateCreateInfo rasterizationState =
|
|
vks::initializers::pipelineRasterizationStateCreateInfo(
|
|
VK_POLYGON_MODE_FILL,
|
|
VK_CULL_MODE_BACK_BIT,
|
|
VK_FRONT_FACE_CLOCKWISE,
|
|
0);
|
|
|
|
VkPipelineColorBlendAttachmentState blendAttachmentState =
|
|
vks::initializers::pipelineColorBlendAttachmentState(
|
|
0xf,
|
|
VK_FALSE);
|
|
|
|
VkPipelineColorBlendStateCreateInfo colorBlendState =
|
|
vks::initializers::pipelineColorBlendStateCreateInfo(
|
|
1,
|
|
&blendAttachmentState);
|
|
|
|
VkPipelineDepthStencilStateCreateInfo depthStencilState =
|
|
vks::initializers::pipelineDepthStencilStateCreateInfo(
|
|
VK_TRUE,
|
|
VK_TRUE,
|
|
VK_COMPARE_OP_LESS_OR_EQUAL);
|
|
|
|
VkPipelineViewportStateCreateInfo viewportState =
|
|
vks::initializers::pipelineViewportStateCreateInfo(1, 1, 0);
|
|
|
|
VkPipelineMultisampleStateCreateInfo multisampleState =
|
|
vks::initializers::pipelineMultisampleStateCreateInfo(
|
|
VK_SAMPLE_COUNT_1_BIT,
|
|
0);
|
|
|
|
std::vector<VkDynamicState> dynamicStateEnables = {
|
|
VK_DYNAMIC_STATE_VIEWPORT,
|
|
VK_DYNAMIC_STATE_SCISSOR
|
|
};
|
|
VkPipelineDynamicStateCreateInfo dynamicState =
|
|
vks::initializers::pipelineDynamicStateCreateInfo(
|
|
dynamicStateEnables.data(),
|
|
static_cast<uint32_t>(dynamicStateEnables.size()),
|
|
0);
|
|
|
|
// Final fullscreen pass pipeline
|
|
std::array<VkPipelineShaderStageCreateInfo, 2> shaderStages;
|
|
|
|
VkGraphicsPipelineCreateInfo pipelineCreateInfo =
|
|
vks::initializers::pipelineCreateInfo(
|
|
pipelineLayouts.deferred,
|
|
renderPass,
|
|
0);
|
|
|
|
pipelineCreateInfo.pInputAssemblyState = &inputAssemblyState;
|
|
pipelineCreateInfo.pRasterizationState = &rasterizationState;
|
|
pipelineCreateInfo.pColorBlendState = &colorBlendState;
|
|
pipelineCreateInfo.pMultisampleState = &multisampleState;
|
|
pipelineCreateInfo.pViewportState = &viewportState;
|
|
pipelineCreateInfo.pDepthStencilState = &depthStencilState;
|
|
pipelineCreateInfo.pDynamicState = &dynamicState;
|
|
pipelineCreateInfo.stageCount = static_cast<uint32_t>(shaderStages.size());
|
|
pipelineCreateInfo.pStages = shaderStages.data();
|
|
|
|
// Deferred
|
|
|
|
// Empty vertex input state, quads are generated by the vertex shader
|
|
VkPipelineVertexInputStateCreateInfo emptyInputState = vks::initializers::pipelineVertexInputStateCreateInfo();
|
|
pipelineCreateInfo.pVertexInputState = &emptyInputState;
|
|
pipelineCreateInfo.layout = pipelineLayouts.deferred;
|
|
|
|
// Use specialization constants to pass number of samples to the shader (used for MSAA resolve)
|
|
VkSpecializationMapEntry specializationEntry{};
|
|
specializationEntry.constantID = 0;
|
|
specializationEntry.offset = 0;
|
|
specializationEntry.size = sizeof(uint32_t);
|
|
|
|
uint32_t specializationData = sampleCount;
|
|
|
|
VkSpecializationInfo specializationInfo;
|
|
specializationInfo.mapEntryCount = 1;
|
|
specializationInfo.pMapEntries = &specializationEntry;
|
|
specializationInfo.dataSize = sizeof(specializationData);
|
|
specializationInfo.pData = &specializationData;
|
|
|
|
// With MSAA
|
|
shaderStages[0] = loadShader(getShadersPath() + "deferredmultisampling/deferred.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
|
|
shaderStages[1] = loadShader(getShadersPath() + "deferredmultisampling/deferred.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
|
|
shaderStages[1].pSpecializationInfo = &specializationInfo;
|
|
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCreateInfo, nullptr, &pipelines.deferred));
|
|
|
|
// No MSAA (1 sample)
|
|
specializationData = 1;
|
|
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCreateInfo, nullptr, &pipelines.deferredNoMSAA));
|
|
|
|
// Debug display pipeline
|
|
specializationData = sampleCount;
|
|
shaderStages[0] = loadShader(getShadersPath() + "deferredmultisampling/debug.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
|
|
shaderStages[1] = loadShader(getShadersPath() + "deferredmultisampling/debug.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
|
|
shaderStages[1].pSpecializationInfo = &specializationInfo;
|
|
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCreateInfo, nullptr, &pipelines.debug));
|
|
|
|
// Offscreen scene rendering pipeline
|
|
pipelineCreateInfo.pVertexInputState = &vertices.inputState;
|
|
|
|
shaderStages[0] = loadShader(getShadersPath() + "deferredmultisampling/mrt.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
|
|
shaderStages[1] = loadShader(getShadersPath() + "deferredmultisampling/mrt.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
|
|
|
|
//rasterizationState.polygonMode = VK_POLYGON_MODE_LINE;
|
|
//rasterizationState.lineWidth = 2.0f;
|
|
multisampleState.rasterizationSamples = sampleCount;
|
|
multisampleState.alphaToCoverageEnable = VK_TRUE;
|
|
|
|
// Separate render pass
|
|
pipelineCreateInfo.renderPass = offScreenFrameBuf.renderPass;
|
|
|
|
// Separate layout
|
|
pipelineCreateInfo.layout = pipelineLayouts.offscreen;
|
|
|
|
// Blend attachment states required for all color attachments
|
|
// This is important, as color write mask will otherwise be 0x0 and you
|
|
// won't see anything rendered to the attachment
|
|
std::array<VkPipelineColorBlendAttachmentState, 3> blendAttachmentStates = {
|
|
vks::initializers::pipelineColorBlendAttachmentState(0xf, VK_FALSE),
|
|
vks::initializers::pipelineColorBlendAttachmentState(0xf, VK_FALSE),
|
|
vks::initializers::pipelineColorBlendAttachmentState(0xf, VK_FALSE)
|
|
};
|
|
|
|
colorBlendState.attachmentCount = static_cast<uint32_t>(blendAttachmentStates.size());
|
|
colorBlendState.pAttachments = blendAttachmentStates.data();
|
|
|
|
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCreateInfo, nullptr, &pipelines.offscreen));
|
|
|
|
multisampleState.sampleShadingEnable = VK_TRUE;
|
|
multisampleState.minSampleShading = 0.25f;
|
|
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCreateInfo, nullptr, &pipelines.offscreenSampleShading));
|
|
}
|
|
|
|
// Prepare and initialize uniform buffer containing shader uniforms
|
|
void prepareUniformBuffers()
|
|
{
|
|
// Fullscreen vertex shader
|
|
VK_CHECK_RESULT(vulkanDevice->createBuffer(
|
|
VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
|
|
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
|
|
&uniformBuffers.vsFullScreen,
|
|
sizeof(uboVS)));
|
|
|
|
// Deferred vertex shader
|
|
VK_CHECK_RESULT(vulkanDevice->createBuffer(
|
|
VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
|
|
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
|
|
&uniformBuffers.vsOffscreen,
|
|
sizeof(uboOffscreenVS)));
|
|
|
|
// Deferred fragment shader
|
|
VK_CHECK_RESULT(vulkanDevice->createBuffer(
|
|
VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
|
|
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
|
|
&uniformBuffers.fsLights,
|
|
sizeof(uboFragmentLights)));
|
|
|
|
// Map persistent
|
|
VK_CHECK_RESULT(uniformBuffers.vsFullScreen.map());
|
|
VK_CHECK_RESULT(uniformBuffers.vsOffscreen.map());
|
|
VK_CHECK_RESULT(uniformBuffers.fsLights.map());
|
|
|
|
// Init some values
|
|
uboOffscreenVS.instancePos[0] = glm::vec4(0.0f);
|
|
uboOffscreenVS.instancePos[1] = glm::vec4(-4.0f, 0.0, -4.0f, 0.0f);
|
|
uboOffscreenVS.instancePos[2] = glm::vec4(4.0f, 0.0, -4.0f, 0.0f);
|
|
|
|
// Update
|
|
updateUniformBuffersScreen();
|
|
updateUniformBufferDeferredMatrices();
|
|
updateUniformBufferDeferredLights();
|
|
}
|
|
|
|
void updateUniformBuffersScreen()
|
|
{
|
|
if (debugDisplay)
|
|
{
|
|
uboVS.projection = glm::ortho(0.0f, 2.0f, 0.0f, 2.0f, -1.0f, 1.0f);
|
|
}
|
|
else
|
|
{
|
|
uboVS.projection = glm::ortho(0.0f, 1.0f, 0.0f, 1.0f, -1.0f, 1.0f);
|
|
}
|
|
uboVS.model = glm::mat4(1.0f);
|
|
|
|
memcpy(uniformBuffers.vsFullScreen.mapped, &uboVS, sizeof(uboVS));
|
|
}
|
|
|
|
void updateUniformBufferDeferredMatrices()
|
|
{
|
|
uboOffscreenVS.projection = camera.matrices.perspective;
|
|
uboOffscreenVS.view = camera.matrices.view;
|
|
uboOffscreenVS.model = glm::mat4(1.0f);
|
|
memcpy(uniformBuffers.vsOffscreen.mapped, &uboOffscreenVS, sizeof(uboOffscreenVS));
|
|
}
|
|
|
|
// Update fragment shader light position uniform block
|
|
void updateUniformBufferDeferredLights()
|
|
{
|
|
// White
|
|
uboFragmentLights.lights[0].position = glm::vec4(0.0f, 0.0f, 1.0f, 0.0f);
|
|
uboFragmentLights.lights[0].color = glm::vec3(1.5f);
|
|
uboFragmentLights.lights[0].radius = 15.0f * 0.25f;
|
|
// Red
|
|
uboFragmentLights.lights[1].position = glm::vec4(-2.0f, 0.0f, 0.0f, 0.0f);
|
|
uboFragmentLights.lights[1].color = glm::vec3(1.0f, 0.0f, 0.0f);
|
|
uboFragmentLights.lights[1].radius = 15.0f;
|
|
// Blue
|
|
uboFragmentLights.lights[2].position = glm::vec4(2.0f, 1.0f, 0.0f, 0.0f);
|
|
uboFragmentLights.lights[2].color = glm::vec3(0.0f, 0.0f, 2.5f);
|
|
uboFragmentLights.lights[2].radius = 5.0f;
|
|
// Yellow
|
|
uboFragmentLights.lights[3].position = glm::vec4(0.0f, 0.9f, 0.5f, 0.0f);
|
|
uboFragmentLights.lights[3].color = glm::vec3(1.0f, 1.0f, 0.0f);
|
|
uboFragmentLights.lights[3].radius = 2.0f;
|
|
// Green
|
|
uboFragmentLights.lights[4].position = glm::vec4(0.0f, 0.5f, 0.0f, 0.0f);
|
|
uboFragmentLights.lights[4].color = glm::vec3(0.0f, 1.0f, 0.2f);
|
|
uboFragmentLights.lights[4].radius = 5.0f;
|
|
// Yellow
|
|
uboFragmentLights.lights[5].position = glm::vec4(0.0f, 1.0f, 0.0f, 0.0f);
|
|
uboFragmentLights.lights[5].color = glm::vec3(1.0f, 0.7f, 0.3f);
|
|
uboFragmentLights.lights[5].radius = 25.0f;
|
|
|
|
uboFragmentLights.lights[0].position.x = sin(glm::radians(360.0f * timer)) * 5.0f;
|
|
uboFragmentLights.lights[0].position.z = cos(glm::radians(360.0f * timer)) * 5.0f;
|
|
|
|
uboFragmentLights.lights[1].position.x = -4.0f + sin(glm::radians(360.0f * timer) + 45.0f) * 2.0f;
|
|
uboFragmentLights.lights[1].position.z = 0.0f + cos(glm::radians(360.0f * timer) + 45.0f) * 2.0f;
|
|
|
|
uboFragmentLights.lights[2].position.x = 4.0f + sin(glm::radians(360.0f * timer)) * 2.0f;
|
|
uboFragmentLights.lights[2].position.z = 0.0f + cos(glm::radians(360.0f * timer)) * 2.0f;
|
|
|
|
uboFragmentLights.lights[4].position.x = 0.0f + sin(glm::radians(360.0f * timer + 90.0f)) * 5.0f;
|
|
uboFragmentLights.lights[4].position.z = 0.0f - cos(glm::radians(360.0f * timer + 45.0f)) * 5.0f;
|
|
|
|
uboFragmentLights.lights[5].position.x = 0.0f + sin(glm::radians(-360.0f * timer + 135.0f)) * 10.0f;
|
|
uboFragmentLights.lights[5].position.z = 0.0f - cos(glm::radians(-360.0f * timer - 45.0f)) * 10.0f;
|
|
|
|
// Current view position
|
|
uboFragmentLights.viewPos = glm::vec4(camera.position, 0.0f) * glm::vec4(-1.0f, 1.0f, -1.0f, 1.0f);
|
|
|
|
memcpy(uniformBuffers.fsLights.mapped, &uboFragmentLights, sizeof(uboFragmentLights));
|
|
}
|
|
|
|
void draw()
|
|
{
|
|
VulkanExampleBase::prepareFrame();
|
|
|
|
// Offscreen rendering
|
|
|
|
// Wait for swap chain presentation to finish
|
|
submitInfo.pWaitSemaphores = &semaphores.presentComplete;
|
|
// Signal ready with offscreen semaphore
|
|
submitInfo.pSignalSemaphores = &offscreenSemaphore;
|
|
|
|
// Submit work
|
|
submitInfo.commandBufferCount = 1;
|
|
submitInfo.pCommandBuffers = &offScreenCmdBuffer;
|
|
VK_CHECK_RESULT(vkQueueSubmit(queue, 1, &submitInfo, VK_NULL_HANDLE));
|
|
|
|
// Scene rendering
|
|
|
|
// Wait for offscreen semaphore
|
|
submitInfo.pWaitSemaphores = &offscreenSemaphore;
|
|
// Signal ready with render complete semaphpre
|
|
submitInfo.pSignalSemaphores = &semaphores.renderComplete;
|
|
|
|
// Submit work
|
|
submitInfo.pCommandBuffers = &drawCmdBuffers[currentBuffer];
|
|
VK_CHECK_RESULT(vkQueueSubmit(queue, 1, &submitInfo, VK_NULL_HANDLE));
|
|
|
|
VulkanExampleBase::submitFrame();
|
|
}
|
|
|
|
void prepare()
|
|
{
|
|
VulkanExampleBase::prepare();
|
|
sampleCount = getMaxUsableSampleCount();
|
|
loadAssets();
|
|
setupVertexDescriptions();
|
|
prepareOffscreenFramebuffer();
|
|
prepareUniformBuffers();
|
|
setupDescriptorSetLayout();
|
|
preparePipelines();
|
|
setupDescriptorPool();
|
|
setupDescriptorSet();
|
|
buildCommandBuffers();
|
|
buildDeferredCommandBuffer();
|
|
prepared = true;
|
|
}
|
|
|
|
virtual void render()
|
|
{
|
|
if (!prepared)
|
|
return;
|
|
draw();
|
|
updateUniformBufferDeferredLights();
|
|
}
|
|
|
|
virtual void viewChanged()
|
|
{
|
|
updateUniformBufferDeferredMatrices();
|
|
uboFragmentLights.windowSize = glm::ivec2(width, height);
|
|
}
|
|
|
|
virtual void OnUpdateUIOverlay(vks::UIOverlay *overlay)
|
|
{
|
|
if (overlay->header("Settings")) {
|
|
if (overlay->checkBox("Display render targets", &debugDisplay)) {
|
|
buildCommandBuffers();
|
|
updateUniformBuffersScreen();
|
|
}
|
|
if (overlay->checkBox("MSAA", &useMSAA)) {
|
|
buildCommandBuffers();
|
|
}
|
|
if (vulkanDevice->features.sampleRateShading) {
|
|
if (overlay->checkBox("Sample rate shading", &useSampleShading)) {
|
|
buildDeferredCommandBuffer();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Returns the maximum sample count usable by the platform
|
|
VkSampleCountFlagBits getMaxUsableSampleCount()
|
|
{
|
|
VkSampleCountFlags counts = std::min(deviceProperties.limits.framebufferColorSampleCounts, deviceProperties.limits.framebufferDepthSampleCounts);
|
|
if (counts & VK_SAMPLE_COUNT_64_BIT) { return VK_SAMPLE_COUNT_64_BIT; }
|
|
if (counts & VK_SAMPLE_COUNT_32_BIT) { return VK_SAMPLE_COUNT_32_BIT; }
|
|
if (counts & VK_SAMPLE_COUNT_16_BIT) { return VK_SAMPLE_COUNT_16_BIT; }
|
|
if (counts & VK_SAMPLE_COUNT_8_BIT) { return VK_SAMPLE_COUNT_8_BIT; }
|
|
if (counts & VK_SAMPLE_COUNT_4_BIT) { return VK_SAMPLE_COUNT_4_BIT; }
|
|
if (counts & VK_SAMPLE_COUNT_2_BIT) { return VK_SAMPLE_COUNT_2_BIT; }
|
|
return VK_SAMPLE_COUNT_1_BIT;
|
|
}
|
|
};
|
|
|
|
VULKAN_EXAMPLE_MAIN()
|