1196 lines
No EOL
39 KiB
C++
1196 lines
No EOL
39 KiB
C++
/*
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* Vulkan Example - Offscreen rendering using a separate framebuffer
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*
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* p - Toggle light source animation
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* l - Toggle between scene and light's POV
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* s - Toggle shadowmap display
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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_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 "vulkanMeshLoader.hpp"
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#define VERTEX_BUFFER_BIND_ID 0
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//#define USE_GLSL
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#define ENABLE_VALIDATION false
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// 16 bits of depth is enough for such a small scene
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#define DEPTH_FORMAT VK_FORMAT_D16_UNORM
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// Texture properties
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#define TEX_DIM 2048
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#define TEX_FILTER VK_FILTER_LINEAR
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// Offscreen frame buffer properties
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#define FB_DIM TEX_DIM
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#define FB_COLOR_FORMAT VK_FORMAT_R8G8B8A8_UNORM
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// Vertex layout for this example
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std::vector<vkMeshLoader::VertexLayout> vertexLayout =
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{
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vkMeshLoader::VERTEX_LAYOUT_POSITION,
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vkMeshLoader::VERTEX_LAYOUT_UV,
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vkMeshLoader::VERTEX_LAYOUT_COLOR,
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vkMeshLoader::VERTEX_LAYOUT_NORMAL
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};
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class VulkanExample : public VulkanExampleBase
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{
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public:
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bool displayShadowMap = true;
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bool lightPOV = false;
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// Keep depth range as small as possible
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// for better shadow map precision
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float zNear = 1.0f;
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float zFar = 96.0f;
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// Constant depth bias factor (always applied)
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float depthBiasConstant = 1.25f;
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// Slope depth bias factor, applied depending on polygon's slope
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float depthBiasSlope = 1.75f;
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glm::vec3 lightPos = glm::vec3();
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float lightFOV = 45.0f;
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struct {
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vkMeshLoader::MeshBuffer scene;
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vkMeshLoader::MeshBuffer quad;
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} meshes;
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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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vkTools::UniformData uniformDataVS, uniformDataOffscreenVS;
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struct {
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vkTools::UniformData scene;
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} uniformData;
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struct {
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glm::mat4 projection;
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glm::mat4 model;
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} uboVSquad;
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struct {
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glm::mat4 projection;
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glm::mat4 view;
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glm::mat4 model;
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glm::mat4 depthBiasMVP;
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glm::vec3 lightPos;
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} uboVSscene;
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struct {
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glm::mat4 depthMVP;
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} uboOffscreenVS;
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struct {
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VkPipeline quad;
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VkPipeline offscreen;
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VkPipeline scene;
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} pipelines;
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struct {
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VkPipelineLayout quad;
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VkPipelineLayout offscreen;
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} pipelineLayouts;
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struct {
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VkDescriptorSet offscreen;
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VkDescriptorSet scene;
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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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};
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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 color, depth;
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vkTools::VulkanTexture textureTarget;
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} offScreenFrameBuf;
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VkCommandBuffer offScreenCmdBuffer = VK_NULL_HANDLE;
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VulkanExample() : VulkanExampleBase(ENABLE_VALIDATION)
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{
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zoom = -20.0f;
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rotation = { -15.0f, -390.0f, 0.0f };
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title = "Vulkan Example - Projected shadow mapping";
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timerSpeed *= 0.5f;
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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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// Texture target
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textureLoader->destroyTexture(offScreenFrameBuf.textureTarget);
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// Frame buffer
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// Color attachment
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vkDestroyImageView(device, offScreenFrameBuf.color.view, nullptr);
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vkDestroyImage(device, offScreenFrameBuf.color.image, nullptr);
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vkFreeMemory(device, offScreenFrameBuf.color.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.quad, nullptr);
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vkDestroyPipeline(device, pipelines.offscreen, nullptr);
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vkDestroyPipelineLayout(device, pipelineLayouts.quad, 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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vkMeshLoader::freeMeshBufferResources(device, &meshes.scene);
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vkMeshLoader::freeMeshBufferResources(device, &meshes.quad);
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// Uniform buffers
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vkTools::destroyUniformData(device, &uniformDataVS);
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vkTools::destroyUniformData(device, &uniformDataOffscreenVS);
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vkFreeCommandBuffers(device, cmdPool, 1, &offScreenCmdBuffer);
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}
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// Preapre an empty texture as the blit target from
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// the offscreen framebuffer
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void prepareTextureTarget(uint32_t width, uint32_t height, VkFormat format)
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{
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createSetupCommandBuffer();
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VkResult err;
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// Get device properites for the requested texture format
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VkFormatProperties formatProperties;
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vkGetPhysicalDeviceFormatProperties(physicalDevice, format, &formatProperties);
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// Check if format is supported for optimal tiling
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assert(formatProperties.optimalTilingFeatures & VK_FORMAT_FEATURE_DEPTH_STENCIL_ATTACHMENT_BIT);
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// Prepare blit target texture
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offScreenFrameBuf.textureTarget.width = width;
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offScreenFrameBuf.textureTarget.height = height;
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VkImageCreateInfo imageCreateInfo = vkTools::initializers::imageCreateInfo();
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imageCreateInfo.imageType = VK_IMAGE_TYPE_2D;
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imageCreateInfo.format = format;
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imageCreateInfo.extent = { width, height, 1 };
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imageCreateInfo.mipLevels = 1;
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imageCreateInfo.arrayLayers = 1;
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imageCreateInfo.samples = VK_SAMPLE_COUNT_1_BIT;
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imageCreateInfo.tiling = VK_IMAGE_TILING_OPTIMAL;
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imageCreateInfo.usage = VK_IMAGE_USAGE_SAMPLED_BIT | VK_IMAGE_USAGE_TRANSFER_DST_BIT;
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imageCreateInfo.initialLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL;
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imageCreateInfo.flags = 0;
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imageCreateInfo.pQueueFamilyIndices = 0;
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imageCreateInfo.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
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VkMemoryAllocateInfo memAllocInfo = vkTools::initializers::memoryAllocateInfo();
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VkMemoryRequirements memReqs;
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err = vkCreateImage(device, &imageCreateInfo, nullptr, &offScreenFrameBuf.textureTarget.image);
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assert(!err);
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vkGetImageMemoryRequirements(device, offScreenFrameBuf.textureTarget.image, &memReqs);
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memAllocInfo.allocationSize = memReqs.size;
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getMemoryType(memReqs.memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, &memAllocInfo.memoryTypeIndex);
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err = vkAllocateMemory(device, &memAllocInfo, nullptr, &offScreenFrameBuf.textureTarget.deviceMemory);
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assert(!err);
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err = vkBindImageMemory(device, offScreenFrameBuf.textureTarget.image, offScreenFrameBuf.textureTarget.deviceMemory, 0);
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assert(!err);
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offScreenFrameBuf.textureTarget.imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
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vkTools::setImageLayout(
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setupCmdBuffer,
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offScreenFrameBuf.textureTarget.image,
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VK_IMAGE_ASPECT_DEPTH_BIT,
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VK_IMAGE_LAYOUT_UNDEFINED,
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offScreenFrameBuf.textureTarget.imageLayout);
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// Create sampler
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VkSamplerCreateInfo sampler = vkTools::initializers::samplerCreateInfo();
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sampler.magFilter = TEX_FILTER;
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sampler.minFilter = TEX_FILTER;
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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 = 0;
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sampler.minLod = 0.0f;
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sampler.maxLod = 0.0f;
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sampler.borderColor = VK_BORDER_COLOR_FLOAT_OPAQUE_WHITE;
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err = vkCreateSampler(device, &sampler, nullptr, &offScreenFrameBuf.textureTarget.sampler);
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assert(!err);
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// Create image view
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VkImageViewCreateInfo view = {};
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view.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
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view.pNext = NULL;
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view.viewType = VK_IMAGE_VIEW_TYPE_2D;
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view.format = format;
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view.components = { VK_COMPONENT_SWIZZLE_R, VK_COMPONENT_SWIZZLE_G, VK_COMPONENT_SWIZZLE_B, VK_COMPONENT_SWIZZLE_A };
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view.subresourceRange = { VK_IMAGE_ASPECT_DEPTH_BIT, 0, 1, 0, 1 };
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view.image = offScreenFrameBuf.textureTarget.image;
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err = vkCreateImageView(device, &view, nullptr, &offScreenFrameBuf.textureTarget.view);
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assert(!err);
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flushSetupCommandBuffer();
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}
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void prepareOffscreenFramebuffer()
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{
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createSetupCommandBuffer();
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offScreenFrameBuf.width = FB_DIM;
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offScreenFrameBuf.height = FB_DIM;
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VkFormat fbColorFormat = FB_COLOR_FORMAT;
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VkResult err;
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// Color attachment
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VkImageCreateInfo image = vkTools::initializers::imageCreateInfo();
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image.imageType = VK_IMAGE_TYPE_2D;
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image.format = fbColorFormat;
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image.extent.width = offScreenFrameBuf.width;
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image.extent.height = offScreenFrameBuf.height;
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image.mipLevels = 1;
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image.arrayLayers = 1;
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image.samples = VK_SAMPLE_COUNT_1_BIT;
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image.tiling = VK_IMAGE_TILING_OPTIMAL;
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// Image of the framebuffer is blit source
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image.usage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT | VK_IMAGE_USAGE_TRANSFER_SRC_BIT;
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image.flags = 0;
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VkMemoryAllocateInfo memAlloc = vkTools::initializers::memoryAllocateInfo();
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VkImageViewCreateInfo colorImageView = vkTools::initializers::imageViewCreateInfo();
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colorImageView.viewType = VK_IMAGE_VIEW_TYPE_2D;
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colorImageView.format = fbColorFormat;
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colorImageView.flags = 0;
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colorImageView.subresourceRange = {};
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colorImageView.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
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colorImageView.subresourceRange.baseMipLevel = 0;
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colorImageView.subresourceRange.levelCount = 1;
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colorImageView.subresourceRange.baseArrayLayer = 0;
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colorImageView.subresourceRange.layerCount = 1;
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VkMemoryRequirements memReqs;
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err = vkCreateImage(device, &image, nullptr, &offScreenFrameBuf.color.image);
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assert(!err);
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vkGetImageMemoryRequirements(device, offScreenFrameBuf.color.image, &memReqs);
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memAlloc.allocationSize = memReqs.size;
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getMemoryType(memReqs.memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, &memAlloc.memoryTypeIndex);
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err = vkAllocateMemory(device, &memAlloc, nullptr, &offScreenFrameBuf.color.mem);
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assert(!err);
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err = vkBindImageMemory(device, offScreenFrameBuf.color.image, offScreenFrameBuf.color.mem, 0);
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assert(!err);
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vkTools::setImageLayout(
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setupCmdBuffer,
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offScreenFrameBuf.color.image,
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VK_IMAGE_ASPECT_COLOR_BIT,
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VK_IMAGE_LAYOUT_UNDEFINED,
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VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL);
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colorImageView.image = offScreenFrameBuf.color.image;
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err = vkCreateImageView(device, &colorImageView, nullptr, &offScreenFrameBuf.color.view);
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assert(!err);
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// Depth stencil attachment
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image.format = DEPTH_FORMAT;
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image.usage = VK_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT | VK_IMAGE_USAGE_TRANSFER_SRC_BIT;
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VkImageViewCreateInfo depthStencilView = vkTools::initializers::imageViewCreateInfo();
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depthStencilView.viewType = VK_IMAGE_VIEW_TYPE_2D;
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depthStencilView.format = DEPTH_FORMAT;
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depthStencilView.flags = 0;
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depthStencilView.subresourceRange = {};
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depthStencilView.subresourceRange.aspectMask = VK_IMAGE_ASPECT_DEPTH_BIT;
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depthStencilView.subresourceRange.baseMipLevel = 0;
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depthStencilView.subresourceRange.levelCount = 1;
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depthStencilView.subresourceRange.baseArrayLayer = 0;
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depthStencilView.subresourceRange.layerCount = 1;
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err = vkCreateImage(device, &image, nullptr, &offScreenFrameBuf.depth.image);
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assert(!err);
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vkGetImageMemoryRequirements(device, offScreenFrameBuf.depth.image, &memReqs);
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memAlloc.allocationSize = memReqs.size;
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getMemoryType(memReqs.memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, &memAlloc.memoryTypeIndex);
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err = vkAllocateMemory(device, &memAlloc, nullptr, &offScreenFrameBuf.depth.mem);
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assert(!err);
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err = vkBindImageMemory(device, offScreenFrameBuf.depth.image, offScreenFrameBuf.depth.mem, 0);
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assert(!err);
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vkTools::setImageLayout(
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setupCmdBuffer,
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offScreenFrameBuf.depth.image,
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VK_IMAGE_ASPECT_DEPTH_BIT,
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VK_IMAGE_LAYOUT_UNDEFINED,
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VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL);
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depthStencilView.image = offScreenFrameBuf.depth.image;
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err = vkCreateImageView(device, &depthStencilView, nullptr, &offScreenFrameBuf.depth.view);
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assert(!err);
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VkImageView attachments[2];
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attachments[0] = offScreenFrameBuf.color.view;
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attachments[1] = 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 = renderPass;
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fbufCreateInfo.attachmentCount = 2;
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fbufCreateInfo.pAttachments = attachments;
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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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err = vkCreateFramebuffer(device, &fbufCreateInfo, nullptr, &offScreenFrameBuf.frameBuffer);
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assert(!err);
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flushSetupCommandBuffer();
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}
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void buildOffscreenCommandBuffer()
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{
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VkResult err;
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// Create separate command buffer for offscreen
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// rendering
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if (offScreenCmdBuffer == VK_NULL_HANDLE)
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{
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VkCommandBufferAllocateInfo cmd = vkTools::initializers::commandBufferAllocateInfo(
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cmdPool,
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VK_COMMAND_BUFFER_LEVEL_PRIMARY,
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1);
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VkResult vkRes = vkAllocateCommandBuffers(device, &cmd, &offScreenCmdBuffer);
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assert(!vkRes);
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}
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VkCommandBufferBeginInfo cmdBufInfo = vkTools::initializers::commandBufferBeginInfo();
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VkClearValue clearValues[2];
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clearValues[0].color = { { 0.0f, 0.0f, 0.0f, 1.0f } };
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clearValues[1].depthStencil = { 1.0f, 0 };
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VkRenderPassBeginInfo renderPassBeginInfo = {};
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renderPassBeginInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
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renderPassBeginInfo.pNext = NULL;
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renderPassBeginInfo.renderPass = renderPass;
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renderPassBeginInfo.framebuffer = offScreenFrameBuf.frameBuffer;
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renderPassBeginInfo.renderArea.offset.x = 0;
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renderPassBeginInfo.renderArea.offset.y = 0;
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renderPassBeginInfo.renderArea.extent.width = offScreenFrameBuf.width;
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renderPassBeginInfo.renderArea.extent.height = offScreenFrameBuf.height;
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renderPassBeginInfo.clearValueCount = 2;
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renderPassBeginInfo.pClearValues = clearValues;
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err = vkBeginCommandBuffer(offScreenCmdBuffer, &cmdBufInfo);
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assert(!err);
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VkViewport viewport = vkTools::initializers::viewport(
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(float)offScreenFrameBuf.width,
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(float)offScreenFrameBuf.height,
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0.0f,
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1.0f);
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vkCmdSetViewport(offScreenCmdBuffer, 0, 1, &viewport);
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VkRect2D scissor = vkTools::initializers::rect2D(
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offScreenFrameBuf.width,
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offScreenFrameBuf.height,
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0,
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0);
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vkCmdSetScissor(offScreenCmdBuffer, 0, 1, &scissor);
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// Set depth bias (aka "Polygon offset")
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vkCmdSetDepthBias(
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offScreenCmdBuffer,
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depthBiasConstant,
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0.0f,
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depthBiasSlope);
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vkCmdBeginRenderPass(offScreenCmdBuffer, &renderPassBeginInfo, VK_SUBPASS_CONTENTS_INLINE);
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vkCmdBindPipeline(offScreenCmdBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.offscreen);
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vkCmdBindDescriptorSets(offScreenCmdBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayouts.offscreen, 0, 1, &descriptorSets.offscreen, 0, NULL);
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VkDeviceSize offsets[1] = { 0 };
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vkCmdBindVertexBuffers(offScreenCmdBuffer, VERTEX_BUFFER_BIND_ID, 1, &meshes.scene.vertices.buf, offsets);
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vkCmdBindIndexBuffer(offScreenCmdBuffer, meshes.scene.indices.buf, 0, VK_INDEX_TYPE_UINT32);
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vkCmdDrawIndexed(offScreenCmdBuffer, meshes.scene.indexCount, 1, 0, 0, 0);
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vkCmdEndRenderPass(offScreenCmdBuffer);
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updateTexture();
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err = vkEndCommandBuffer(offScreenCmdBuffer);
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assert(!err);
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}
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|
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void buildCommandBuffers()
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|
{
|
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VkCommandBufferBeginInfo cmdBufInfo = vkTools::initializers::commandBufferBeginInfo();
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|
|
VkClearValue clearValues[2];
|
|
clearValues[0].color = defaultClearColor;
|
|
clearValues[1].depthStencil = { 1.0f, 0 };
|
|
|
|
VkRenderPassBeginInfo renderPassBeginInfo = vkTools::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;
|
|
|
|
VkResult err;
|
|
|
|
for (int32_t i = 0; i < drawCmdBuffers.size(); ++i)
|
|
{
|
|
// Set target frame buffer
|
|
renderPassBeginInfo.framebuffer = frameBuffers[i];
|
|
|
|
err = vkBeginCommandBuffer(drawCmdBuffers[i], &cmdBufInfo);
|
|
assert(!err);
|
|
|
|
vkCmdBeginRenderPass(drawCmdBuffers[i], &renderPassBeginInfo, VK_SUBPASS_CONTENTS_INLINE);
|
|
|
|
VkViewport viewport = vkTools::initializers::viewport((float)width, (float)height, 0.0f, 1.0f);
|
|
vkCmdSetViewport(drawCmdBuffers[i], 0, 1, &viewport);
|
|
|
|
VkRect2D scissor = vkTools::initializers::rect2D(width, height, 0, 0);
|
|
vkCmdSetScissor(drawCmdBuffers[i], 0, 1, &scissor);
|
|
|
|
VkDeviceSize offsets[1] = { 0 };
|
|
|
|
vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayouts.quad, 0, 1, &descriptorSet, 0, NULL);
|
|
vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.quad);
|
|
|
|
// Visualize shadow map
|
|
if (displayShadowMap)
|
|
{
|
|
vkCmdBindVertexBuffers(drawCmdBuffers[i], VERTEX_BUFFER_BIND_ID, 1, &meshes.quad.vertices.buf, offsets);
|
|
vkCmdBindIndexBuffer(drawCmdBuffers[i], meshes.quad.indices.buf, 0, VK_INDEX_TYPE_UINT32);
|
|
vkCmdDrawIndexed(drawCmdBuffers[i], meshes.quad.indexCount, 1, 0, 0, 0);
|
|
}
|
|
|
|
// 3D scene
|
|
vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayouts.quad, 0, 1, &descriptorSets.scene, 0, NULL);
|
|
vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.scene);
|
|
|
|
vkCmdBindVertexBuffers(drawCmdBuffers[i], VERTEX_BUFFER_BIND_ID, 1, &meshes.scene.vertices.buf, offsets);
|
|
vkCmdBindIndexBuffer(drawCmdBuffers[i], meshes.scene.indices.buf, 0, VK_INDEX_TYPE_UINT32);
|
|
vkCmdDrawIndexed(drawCmdBuffers[i], meshes.scene.indexCount, 1, 0, 0, 0);
|
|
|
|
vkCmdEndRenderPass(drawCmdBuffers[i]);
|
|
|
|
err = vkEndCommandBuffer(drawCmdBuffers[i]);
|
|
assert(!err);
|
|
}
|
|
}
|
|
|
|
void draw()
|
|
{
|
|
VkResult err;
|
|
VkSemaphore presentCompleteSemaphore;
|
|
VkSemaphoreCreateInfo presentCompleteSemaphoreCreateInfo =
|
|
vkTools::initializers::semaphoreCreateInfo(VK_FLAGS_NONE);
|
|
|
|
err = vkCreateSemaphore(device, &presentCompleteSemaphoreCreateInfo, nullptr, &presentCompleteSemaphore);
|
|
assert(!err);
|
|
|
|
// Get next image in the swap chain (back/front buffer)
|
|
err = swapChain.acquireNextImage(presentCompleteSemaphore, ¤tBuffer);
|
|
assert(!err);
|
|
|
|
// Gather command buffers to be sumitted to the queue
|
|
std::vector<VkCommandBuffer> submitCmdBuffers = {
|
|
offScreenCmdBuffer,
|
|
drawCmdBuffers[currentBuffer],
|
|
};
|
|
|
|
VkSubmitInfo submitInfo = vkTools::initializers::submitInfo();
|
|
submitInfo.waitSemaphoreCount = 1;
|
|
submitInfo.pWaitSemaphores = &presentCompleteSemaphore;
|
|
submitInfo.commandBufferCount = submitCmdBuffers.size();
|
|
submitInfo.pCommandBuffers = submitCmdBuffers.data();
|
|
|
|
// Submit draw command buffer
|
|
err = vkQueueSubmit(queue, 1, &submitInfo, VK_NULL_HANDLE);
|
|
assert(!err);
|
|
|
|
submitPrePresentBarrier(swapChain.buffers[currentBuffer].image);
|
|
|
|
err = swapChain.queuePresent(queue, currentBuffer);
|
|
assert(!err);
|
|
|
|
vkDestroySemaphore(device, presentCompleteSemaphore, nullptr);
|
|
|
|
submitPostPresentBarrier(swapChain.buffers[currentBuffer].image);
|
|
|
|
err = vkQueueWaitIdle(queue);
|
|
assert(!err);
|
|
}
|
|
|
|
void loadMeshes()
|
|
{
|
|
loadMesh("./../data/models/vulkanscene_shadow.dae", &meshes.scene, vertexLayout, 4.0f);
|
|
}
|
|
|
|
void generateQuad()
|
|
{
|
|
// Setup vertices for a single uv-mapped quad
|
|
struct Vertex {
|
|
float pos[3];
|
|
float uv[2];
|
|
float col[3];
|
|
float normal[3];
|
|
};
|
|
|
|
#define QUAD_COLOR_NORMAL { 1.0f, 1.0f, 1.0f }, { 0.0f, 0.0f, 1.0f }
|
|
std::vector<Vertex> vertexBuffer =
|
|
{
|
|
{ { 1.0f, 1.0f, 0.0f },{ 1.0f, 1.0f }, QUAD_COLOR_NORMAL },
|
|
{ { 0.0f, 1.0f, 0.0f },{ 0.0f, 1.0f }, QUAD_COLOR_NORMAL },
|
|
{ { 0.0f, 0.0f, 0.0f },{ 0.0f, 0.0f }, QUAD_COLOR_NORMAL },
|
|
{ { 1.0f, 0.0f, 0.0f },{ 1.0f, 0.0f }, QUAD_COLOR_NORMAL }
|
|
};
|
|
#undef QUAD_COLOR_NORMAL
|
|
|
|
createBuffer(
|
|
VK_BUFFER_USAGE_VERTEX_BUFFER_BIT,
|
|
vertexBuffer.size() * sizeof(Vertex),
|
|
vertexBuffer.data(),
|
|
&meshes.quad.vertices.buf,
|
|
&meshes.quad.vertices.mem);
|
|
|
|
// Setup indices
|
|
std::vector<uint32_t> indexBuffer = { 0,1,2, 2,3,0 };
|
|
meshes.quad.indexCount = indexBuffer.size();
|
|
|
|
createBuffer(
|
|
VK_BUFFER_USAGE_INDEX_BUFFER_BIT,
|
|
indexBuffer.size() * sizeof(uint32_t),
|
|
indexBuffer.data(),
|
|
&meshes.quad.indices.buf,
|
|
&meshes.quad.indices.mem);
|
|
}
|
|
|
|
void setupVertexDescriptions()
|
|
{
|
|
// Binding description
|
|
vertices.bindingDescriptions.resize(1);
|
|
vertices.bindingDescriptions[0] =
|
|
vkTools::initializers::vertexInputBindingDescription(
|
|
VERTEX_BUFFER_BIND_ID,
|
|
vkMeshLoader::vertexSize(vertexLayout),
|
|
VK_VERTEX_INPUT_RATE_VERTEX);
|
|
|
|
// Attribute descriptions
|
|
vertices.attributeDescriptions.resize(4);
|
|
// Location 0 : Position
|
|
vertices.attributeDescriptions[0] =
|
|
vkTools::initializers::vertexInputAttributeDescription(
|
|
VERTEX_BUFFER_BIND_ID,
|
|
0,
|
|
VK_FORMAT_R32G32B32_SFLOAT,
|
|
0);
|
|
// Location 1 : Texture coordinates
|
|
vertices.attributeDescriptions[1] =
|
|
vkTools::initializers::vertexInputAttributeDescription(
|
|
VERTEX_BUFFER_BIND_ID,
|
|
1,
|
|
VK_FORMAT_R32G32_SFLOAT,
|
|
sizeof(float) * 3);
|
|
// Location 2 : Color
|
|
vertices.attributeDescriptions[2] =
|
|
vkTools::initializers::vertexInputAttributeDescription(
|
|
VERTEX_BUFFER_BIND_ID,
|
|
2,
|
|
VK_FORMAT_R32G32B32_SFLOAT,
|
|
sizeof(float) * 5);
|
|
// Location 3 : Normal
|
|
vertices.attributeDescriptions[3] =
|
|
vkTools::initializers::vertexInputAttributeDescription(
|
|
VERTEX_BUFFER_BIND_ID,
|
|
3,
|
|
VK_FORMAT_R32G32B32_SFLOAT,
|
|
sizeof(float) * 8);
|
|
|
|
vertices.inputState = vkTools::initializers::pipelineVertexInputStateCreateInfo();
|
|
vertices.inputState.vertexBindingDescriptionCount = vertices.bindingDescriptions.size();
|
|
vertices.inputState.pVertexBindingDescriptions = vertices.bindingDescriptions.data();
|
|
vertices.inputState.vertexAttributeDescriptionCount = vertices.attributeDescriptions.size();
|
|
vertices.inputState.pVertexAttributeDescriptions = vertices.attributeDescriptions.data();
|
|
}
|
|
|
|
void setupDescriptorPool()
|
|
{
|
|
// Example uses three ubos and two image samplers
|
|
std::vector<VkDescriptorPoolSize> poolSizes =
|
|
{
|
|
vkTools::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 6),
|
|
vkTools::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 4)
|
|
};
|
|
|
|
VkDescriptorPoolCreateInfo descriptorPoolInfo =
|
|
vkTools::initializers::descriptorPoolCreateInfo(
|
|
poolSizes.size(),
|
|
poolSizes.data(),
|
|
3);
|
|
|
|
VkResult vkRes = vkCreateDescriptorPool(device, &descriptorPoolInfo, nullptr, &descriptorPool);
|
|
assert(!vkRes);
|
|
}
|
|
|
|
void setupDescriptorSetLayout()
|
|
{
|
|
// Textured quad pipeline layout
|
|
std::vector<VkDescriptorSetLayoutBinding> setLayoutBindings =
|
|
{
|
|
// Binding 0 : Vertex shader uniform buffer
|
|
vkTools::initializers::descriptorSetLayoutBinding(
|
|
VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
|
|
VK_SHADER_STAGE_VERTEX_BIT,
|
|
0),
|
|
// Binding 1 : Fragment shader image sampler
|
|
vkTools::initializers::descriptorSetLayoutBinding(
|
|
VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
|
|
VK_SHADER_STAGE_FRAGMENT_BIT,
|
|
1)
|
|
};
|
|
|
|
VkDescriptorSetLayoutCreateInfo descriptorLayout =
|
|
vkTools::initializers::descriptorSetLayoutCreateInfo(
|
|
setLayoutBindings.data(),
|
|
setLayoutBindings.size());
|
|
|
|
VkResult err = vkCreateDescriptorSetLayout(device, &descriptorLayout, nullptr, &descriptorSetLayout);
|
|
assert(!err);
|
|
|
|
VkPipelineLayoutCreateInfo pPipelineLayoutCreateInfo =
|
|
vkTools::initializers::pipelineLayoutCreateInfo(
|
|
&descriptorSetLayout,
|
|
1);
|
|
|
|
err = vkCreatePipelineLayout(device, &pPipelineLayoutCreateInfo, nullptr, &pipelineLayouts.quad);
|
|
assert(!err);
|
|
|
|
// Offscreen pipeline layout
|
|
err = vkCreatePipelineLayout(device, &pPipelineLayoutCreateInfo, nullptr, &pipelineLayouts.offscreen);
|
|
assert(!err);
|
|
}
|
|
|
|
void setupDescriptorSets()
|
|
{
|
|
// Textured quad descriptor set
|
|
VkDescriptorSetAllocateInfo allocInfo =
|
|
vkTools::initializers::descriptorSetAllocateInfo(
|
|
descriptorPool,
|
|
&descriptorSetLayout,
|
|
1);
|
|
|
|
VkResult vkRes = vkAllocateDescriptorSets(device, &allocInfo, &descriptorSet);
|
|
assert(!vkRes);
|
|
|
|
// Image descriptor for the shadow map texture
|
|
VkDescriptorImageInfo texDescriptor =
|
|
vkTools::initializers::descriptorImageInfo(
|
|
offScreenFrameBuf.textureTarget.sampler,
|
|
offScreenFrameBuf.textureTarget.view,
|
|
VK_IMAGE_LAYOUT_GENERAL);
|
|
|
|
std::vector<VkWriteDescriptorSet> writeDescriptorSets =
|
|
{
|
|
// Binding 0 : Vertex shader uniform buffer
|
|
vkTools::initializers::writeDescriptorSet(
|
|
descriptorSet,
|
|
VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
|
|
0,
|
|
&uniformDataVS.descriptor),
|
|
// Binding 1 : Fragment shader texture sampler
|
|
vkTools::initializers::writeDescriptorSet(
|
|
descriptorSet,
|
|
VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
|
|
1,
|
|
&texDescriptor)
|
|
};
|
|
|
|
vkUpdateDescriptorSets(device, writeDescriptorSets.size(), writeDescriptorSets.data(), 0, NULL);
|
|
|
|
// Offscreen
|
|
vkRes = vkAllocateDescriptorSets(device, &allocInfo, &descriptorSets.offscreen);
|
|
assert(!vkRes);
|
|
|
|
std::vector<VkWriteDescriptorSet> offScreenWriteDescriptorSets =
|
|
{
|
|
// Binding 0 : Vertex shader uniform buffer
|
|
vkTools::initializers::writeDescriptorSet(
|
|
descriptorSets.offscreen,
|
|
VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
|
|
0,
|
|
&uniformDataOffscreenVS.descriptor),
|
|
};
|
|
vkUpdateDescriptorSets(device, offScreenWriteDescriptorSets.size(), offScreenWriteDescriptorSets.data(), 0, NULL);
|
|
|
|
// 3D scene
|
|
vkRes = vkAllocateDescriptorSets(device, &allocInfo, &descriptorSets.scene);
|
|
assert(!vkRes);
|
|
|
|
// Image descriptor for the shadow map texture
|
|
texDescriptor.sampler = offScreenFrameBuf.textureTarget.sampler;
|
|
texDescriptor.imageView = offScreenFrameBuf.textureTarget.view;
|
|
|
|
std::vector<VkWriteDescriptorSet> sceneDescriptorSets =
|
|
{
|
|
// Binding 0 : Vertex shader uniform buffer
|
|
vkTools::initializers::writeDescriptorSet(
|
|
descriptorSets.scene,
|
|
VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
|
|
0,
|
|
&uniformData.scene.descriptor),
|
|
// Binding 1 : Fragment shader shadow sampler
|
|
vkTools::initializers::writeDescriptorSet(
|
|
descriptorSets.scene,
|
|
VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
|
|
1,
|
|
&texDescriptor)
|
|
};
|
|
vkUpdateDescriptorSets(device, sceneDescriptorSets.size(), sceneDescriptorSets.data(), 0, NULL);
|
|
|
|
}
|
|
|
|
void preparePipelines()
|
|
{
|
|
VkPipelineInputAssemblyStateCreateInfo inputAssemblyState =
|
|
vkTools::initializers::pipelineInputAssemblyStateCreateInfo(
|
|
VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST,
|
|
0,
|
|
VK_FALSE);
|
|
|
|
VkPipelineRasterizationStateCreateInfo rasterizationState =
|
|
vkTools::initializers::pipelineRasterizationStateCreateInfo(
|
|
VK_POLYGON_MODE_FILL,
|
|
VK_CULL_MODE_FRONT_BIT,
|
|
VK_FRONT_FACE_CLOCKWISE,
|
|
0);
|
|
|
|
VkPipelineColorBlendAttachmentState blendAttachmentState =
|
|
vkTools::initializers::pipelineColorBlendAttachmentState(
|
|
0xf,
|
|
VK_FALSE);
|
|
|
|
VkPipelineColorBlendStateCreateInfo colorBlendState =
|
|
vkTools::initializers::pipelineColorBlendStateCreateInfo(
|
|
1,
|
|
&blendAttachmentState);
|
|
|
|
VkPipelineDepthStencilStateCreateInfo depthStencilState =
|
|
vkTools::initializers::pipelineDepthStencilStateCreateInfo(
|
|
VK_TRUE,
|
|
VK_TRUE,
|
|
VK_COMPARE_OP_LESS_OR_EQUAL);
|
|
|
|
VkPipelineViewportStateCreateInfo viewportState =
|
|
vkTools::initializers::pipelineViewportStateCreateInfo(1, 1, 0);
|
|
|
|
VkPipelineMultisampleStateCreateInfo multisampleState =
|
|
vkTools::initializers::pipelineMultisampleStateCreateInfo(
|
|
VK_SAMPLE_COUNT_1_BIT,
|
|
0);
|
|
|
|
std::vector<VkDynamicState> dynamicStateEnables = {
|
|
VK_DYNAMIC_STATE_VIEWPORT,
|
|
VK_DYNAMIC_STATE_SCISSOR
|
|
};
|
|
VkPipelineDynamicStateCreateInfo dynamicState =
|
|
vkTools::initializers::pipelineDynamicStateCreateInfo(
|
|
dynamicStateEnables.data(),
|
|
dynamicStateEnables.size(),
|
|
0);
|
|
|
|
// Solid rendering pipeline
|
|
// Load shaders
|
|
std::array<VkPipelineShaderStageCreateInfo, 2> shaderStages;
|
|
|
|
#ifdef USE_GLSL
|
|
shaderStages[0] = loadShaderGLSL("./../data/shaders/shadowmapping/quad.vert", VK_SHADER_STAGE_VERTEX_BIT);
|
|
shaderStages[1] = loadShaderGLSL("./../data/shaders/shadowmapping/quad.frag", VK_SHADER_STAGE_FRAGMENT_BIT);
|
|
#else
|
|
shaderStages[0] = loadShader("./../data/shaders/shadowmapping/quad.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
|
|
shaderStages[1] = loadShader("./../data/shaders/shadowmapping/quad.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
|
|
#endif
|
|
|
|
VkGraphicsPipelineCreateInfo pipelineCreateInfo =
|
|
vkTools::initializers::pipelineCreateInfo(
|
|
pipelineLayouts.quad,
|
|
renderPass,
|
|
0);
|
|
|
|
rasterizationState.cullMode = VK_CULL_MODE_NONE;
|
|
|
|
pipelineCreateInfo.pVertexInputState = &vertices.inputState;
|
|
pipelineCreateInfo.pInputAssemblyState = &inputAssemblyState;
|
|
pipelineCreateInfo.pRasterizationState = &rasterizationState;
|
|
pipelineCreateInfo.pColorBlendState = &colorBlendState;
|
|
pipelineCreateInfo.pMultisampleState = &multisampleState;
|
|
pipelineCreateInfo.pViewportState = &viewportState;
|
|
pipelineCreateInfo.pDepthStencilState = &depthStencilState;
|
|
pipelineCreateInfo.pDynamicState = &dynamicState;
|
|
pipelineCreateInfo.stageCount = shaderStages.size();
|
|
pipelineCreateInfo.pStages = shaderStages.data();
|
|
|
|
VkResult err = vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCreateInfo, nullptr, &pipelines.quad);
|
|
assert(!err);
|
|
|
|
// 3D scene
|
|
#ifdef USE_GLSL
|
|
shaderStages[0] = loadShaderGLSL("./../data/shaders/shadowmapping/scene.vert", VK_SHADER_STAGE_VERTEX_BIT);
|
|
shaderStages[1] = loadShaderGLSL("./../data/shaders/shadowmapping/scene.frag", VK_SHADER_STAGE_FRAGMENT_BIT);
|
|
#else
|
|
shaderStages[0] = loadShader("./../data/shaders/shadowmapping/scene.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
|
|
shaderStages[1] = loadShader("./../data/shaders/shadowmapping/scene.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
|
|
#endif
|
|
|
|
rasterizationState.cullMode = VK_CULL_MODE_NONE;
|
|
|
|
err = vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCreateInfo, nullptr, &pipelines.scene);
|
|
assert(!err);
|
|
|
|
// Offscreen pipeline
|
|
#ifdef USE_GLSL
|
|
shaderStages[0] = loadShaderGLSL("./../data/shaders/shadowmapping/offscreen.vert", VK_SHADER_STAGE_VERTEX_BIT);
|
|
shaderStages[1] = loadShaderGLSL("./../data/shaders/shadowmapping/offscreen.frag", VK_SHADER_STAGE_FRAGMENT_BIT);
|
|
#else
|
|
shaderStages[0] = loadShader("./../data/shaders/shadowmapping/offscreen.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
|
|
shaderStages[1] = loadShader("./../data/shaders/shadowmapping/offscreen.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
|
|
#endif
|
|
|
|
pipelineCreateInfo.layout = pipelineLayouts.offscreen;
|
|
|
|
// Cull front faces
|
|
depthStencilState.depthCompareOp = VK_COMPARE_OP_LESS_OR_EQUAL;
|
|
|
|
// Enable depth bias
|
|
rasterizationState.depthBiasEnable = VK_TRUE;
|
|
|
|
// Add depth bias to dynamic state, so we can change it at runtime
|
|
dynamicStateEnables.push_back(VK_DYNAMIC_STATE_DEPTH_BIAS);
|
|
dynamicState =
|
|
vkTools::initializers::pipelineDynamicStateCreateInfo(
|
|
dynamicStateEnables.data(),
|
|
dynamicStateEnables.size(),
|
|
0);
|
|
|
|
err = vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCreateInfo, nullptr, &pipelines.offscreen);
|
|
assert(!err);
|
|
}
|
|
|
|
// Prepare and initialize uniform buffer containing shader uniforms
|
|
void prepareUniformBuffers()
|
|
{
|
|
// Debug quad vertex shader uniform buffer block
|
|
createBuffer(
|
|
VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
|
|
sizeof(uboVSscene),
|
|
nullptr,
|
|
&uniformDataVS.buffer,
|
|
&uniformDataVS.memory,
|
|
&uniformDataVS.descriptor);
|
|
|
|
// Offsvreen vertex shader uniform buffer block
|
|
createBuffer(
|
|
VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
|
|
sizeof(uboOffscreenVS),
|
|
nullptr,
|
|
&uniformDataOffscreenVS.buffer,
|
|
&uniformDataOffscreenVS.memory,
|
|
&uniformDataOffscreenVS.descriptor);
|
|
|
|
// Scene vertex shader uniform buffer block
|
|
createBuffer(
|
|
VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
|
|
sizeof(uboVSscene),
|
|
nullptr,
|
|
&uniformData.scene.buffer,
|
|
&uniformData.scene.memory,
|
|
&uniformData.scene.descriptor);
|
|
|
|
updateLight();
|
|
updateUniformBufferOffscreen();
|
|
updateUniformBuffers();
|
|
}
|
|
|
|
void updateLight()
|
|
{
|
|
// Animate the light source
|
|
lightPos.x = cos(glm::radians(timer * 360.0f)) * 40.0f;
|
|
lightPos.y = -50.0f + sin(glm::radians(timer * 360.0f)) * 20.0f;
|
|
lightPos.z = 25.0f + sin(glm::radians(timer * 360.0f)) * 5.0f;
|
|
}
|
|
|
|
void updateUniformBuffers()
|
|
{
|
|
// Shadow map debug quad
|
|
float AR = (float)height / (float)width;
|
|
|
|
uboVSquad.projection = glm::ortho(0.0f, 2.5f / AR, 0.0f, 2.5f, -1.0f, 1.0f);
|
|
uboVSquad.model = glm::mat4();
|
|
|
|
uint8_t *pData;
|
|
VkResult err = vkMapMemory(device, uniformDataVS.memory, 0, sizeof(uboVSquad), 0, (void **)&pData);
|
|
assert(!err);
|
|
memcpy(pData, &uboVSquad, sizeof(uboVSquad));
|
|
vkUnmapMemory(device, uniformDataVS.memory);
|
|
|
|
// 3D scene
|
|
uboVSscene.projection = glm::perspective(glm::radians(45.0f), (float)width / (float)height, zNear, zFar);
|
|
|
|
uboVSscene.view = glm::translate(glm::mat4(), glm::vec3(0.0f, 0.0f, zoom));
|
|
uboVSscene.view = glm::rotate(uboVSscene.view, glm::radians(rotation.x), glm::vec3(1.0f, 0.0f, 0.0f));
|
|
uboVSscene.view = glm::rotate(uboVSscene.view, glm::radians(rotation.y), glm::vec3(0.0f, 1.0f, 0.0f));
|
|
uboVSscene.view = glm::rotate(uboVSscene.view, glm::radians(rotation.z), glm::vec3(0.0f, 0.0f, 1.0f));
|
|
|
|
uboVSscene.model = glm::mat4();
|
|
|
|
uboVSscene.lightPos = lightPos;
|
|
|
|
// Render scene from light's point of view
|
|
if (lightPOV)
|
|
{
|
|
uboVSscene.projection = glm::perspective(glm::radians(lightFOV), (float)width / (float)height, zNear, zFar);
|
|
uboVSscene.view = glm::lookAt(lightPos, glm::vec3(0.0f), glm::vec3(0, 1, 0));
|
|
}
|
|
|
|
|
|
uboVSscene.depthBiasMVP = uboOffscreenVS.depthMVP;
|
|
|
|
pData;
|
|
err = vkMapMemory(device, uniformData.scene.memory, 0, sizeof(uboVSscene), 0, (void **)&pData);
|
|
assert(!err);
|
|
memcpy(pData, &uboVSscene, sizeof(uboVSscene));
|
|
vkUnmapMemory(device, uniformData.scene.memory);
|
|
}
|
|
|
|
void updateUniformBufferOffscreen()
|
|
{
|
|
// Matrix from light's point of view
|
|
glm::mat4 depthProjectionMatrix = glm::perspective(glm::radians(lightFOV), 1.0f, zNear, zFar);
|
|
glm::mat4 depthViewMatrix = glm::lookAt(lightPos, glm::vec3(0, 0, 0), glm::vec3(0, 1, 0));
|
|
glm::mat4 depthModelMatrix = glm::mat4();
|
|
|
|
uboOffscreenVS.depthMVP = depthProjectionMatrix * depthViewMatrix * depthModelMatrix;
|
|
|
|
uint8_t *pData;
|
|
VkResult err = vkMapMemory(device, uniformDataOffscreenVS.memory, 0, sizeof(uboOffscreenVS), 0, (void **)&pData);
|
|
assert(!err);
|
|
memcpy(pData, &uboOffscreenVS, sizeof(uboOffscreenVS));
|
|
vkUnmapMemory(device, uniformDataOffscreenVS.memory);
|
|
}
|
|
|
|
// Copy offscreen depth frame buffer contents to the depth texture
|
|
void updateTexture()
|
|
{
|
|
// Make sure color writes to the framebuffer are finished before using it as transfer source
|
|
vkTools::setImageLayout(
|
|
offScreenCmdBuffer,
|
|
offScreenFrameBuf.depth.image,
|
|
VK_IMAGE_ASPECT_DEPTH_BIT,
|
|
VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL,
|
|
VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL);
|
|
|
|
// Transform texture target to transfer source
|
|
vkTools::setImageLayout(
|
|
offScreenCmdBuffer,
|
|
offScreenFrameBuf.textureTarget.image,
|
|
VK_IMAGE_ASPECT_DEPTH_BIT,
|
|
VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL,
|
|
VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL);
|
|
|
|
VkImageCopy imgCopy = {};
|
|
|
|
imgCopy.srcSubresource.aspectMask = VK_IMAGE_ASPECT_DEPTH_BIT;
|
|
imgCopy.srcSubresource.mipLevel = 0;
|
|
imgCopy.srcSubresource.baseArrayLayer = 0;
|
|
imgCopy.srcSubresource.layerCount = 1;
|
|
|
|
imgCopy.srcOffset = { 0, 0, 0 };
|
|
|
|
imgCopy.dstSubresource.aspectMask = VK_IMAGE_ASPECT_DEPTH_BIT;
|
|
imgCopy.dstSubresource.mipLevel = 0;
|
|
imgCopy.dstSubresource.baseArrayLayer = 0;
|
|
imgCopy.dstSubresource.layerCount = 1;
|
|
|
|
imgCopy.dstOffset = { 0, 0, 0 };
|
|
|
|
imgCopy.extent.width = TEX_DIM;
|
|
imgCopy.extent.height = TEX_DIM;
|
|
imgCopy.extent.depth = 1;
|
|
|
|
vkCmdCopyImage(
|
|
offScreenCmdBuffer,
|
|
offScreenFrameBuf.depth.image,
|
|
VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL,
|
|
offScreenFrameBuf.textureTarget.image,
|
|
VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL,
|
|
1,
|
|
&imgCopy);
|
|
|
|
// Transform framebuffer color attachment back
|
|
vkTools::setImageLayout(
|
|
offScreenCmdBuffer,
|
|
offScreenFrameBuf.depth.image,
|
|
VK_IMAGE_ASPECT_DEPTH_BIT,
|
|
VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL,
|
|
VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL);
|
|
|
|
// Transform texture target back to shader read
|
|
// Makes sure that writes to the textuer are finished before
|
|
// it's accessed in the shader
|
|
vkTools::setImageLayout(
|
|
offScreenCmdBuffer,
|
|
offScreenFrameBuf.textureTarget.image,
|
|
VK_IMAGE_ASPECT_DEPTH_BIT,
|
|
VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL,
|
|
VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL);
|
|
}
|
|
|
|
void prepare()
|
|
{
|
|
VulkanExampleBase::prepare();
|
|
generateQuad();
|
|
loadMeshes();
|
|
setupVertexDescriptions();
|
|
prepareUniformBuffers();
|
|
prepareTextureTarget(TEX_DIM, TEX_DIM, DEPTH_FORMAT);
|
|
setupDescriptorSetLayout();
|
|
preparePipelines();
|
|
setupDescriptorPool();
|
|
setupDescriptorSets();
|
|
prepareOffscreenFramebuffer();
|
|
buildCommandBuffers();
|
|
buildOffscreenCommandBuffer();
|
|
prepared = true;
|
|
}
|
|
|
|
virtual void render()
|
|
{
|
|
if (!prepared)
|
|
return;
|
|
vkDeviceWaitIdle(device);
|
|
draw();
|
|
vkDeviceWaitIdle(device);
|
|
if (!paused)
|
|
{
|
|
updateLight();
|
|
updateUniformBufferOffscreen();
|
|
updateUniformBuffers();
|
|
}
|
|
}
|
|
|
|
virtual void viewChanged()
|
|
{
|
|
updateUniformBufferOffscreen();
|
|
updateUniformBuffers();
|
|
}
|
|
|
|
void toggleShadowMapDisplay()
|
|
{
|
|
displayShadowMap = !displayShadowMap;
|
|
buildCommandBuffers();
|
|
}
|
|
|
|
void toogleLightPOV()
|
|
{
|
|
lightPOV = !lightPOV;
|
|
viewChanged();
|
|
}
|
|
};
|
|
|
|
VulkanExample *vulkanExample;
|
|
|
|
#ifdef _WIN32
|
|
|
|
LRESULT CALLBACK WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
|
|
{
|
|
if (vulkanExample != NULL)
|
|
{
|
|
vulkanExample->handleMessages(hWnd, uMsg, wParam, lParam);
|
|
if (uMsg == WM_KEYDOWN)
|
|
{
|
|
switch (wParam)
|
|
{
|
|
case 0x53:
|
|
vulkanExample->toggleShadowMapDisplay();
|
|
break;
|
|
case 0x4C:
|
|
vulkanExample->toogleLightPOV();
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return (DefWindowProc(hWnd, uMsg, wParam, lParam));
|
|
}
|
|
|
|
#else
|
|
|
|
static void handleEvent(const xcb_generic_event_t *event)
|
|
{
|
|
if (vulkanExample != NULL)
|
|
{
|
|
vulkanExample->handleEvent(event);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#ifdef _WIN32
|
|
int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR pCmdLine, int nCmdShow)
|
|
#else
|
|
int main(const int argc, const char *argv[])
|
|
#endif
|
|
{
|
|
vulkanExample = new VulkanExample();
|
|
#ifdef _WIN32
|
|
vulkanExample->setupWindow(hInstance, WndProc);
|
|
#else
|
|
vulkanExample->setupWindow();
|
|
#endif
|
|
vulkanExample->initSwapchain();
|
|
vulkanExample->prepare();
|
|
vulkanExample->renderLoop();
|
|
delete(vulkanExample);
|
|
return 0;
|
|
} |