1020 lines
36 KiB
C++
1020 lines
36 KiB
C++
/*
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* Vulkan Example - Shadow mapping for directional light sources
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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 "vulkanMeshLoader.hpp"
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#define VERTEX_BUFFER_BIND_ID 0
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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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// Shadowmap properties
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#if defined(__ANDROID__)
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#define SHADOWMAP_DIM 1024
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#else
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#define SHADOWMAP_DIM 2048
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#endif
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#define SHADOWMAP_FILTER VK_FILTER_LINEAR
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// Offscreen frame buffer properties
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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 = false;
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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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// Depth bias (and slope) are used to avoid shadowing artefacts
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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;
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struct {
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vkTools::UniformData scene;
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vkTools::UniformData offscreen;
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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 OffscreenPass {
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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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VkRenderPass renderPass;
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VkSampler depthSampler;
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VkDescriptorImageInfo descriptor;
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VkCommandBuffer commandBuffer = VK_NULL_HANDLE;
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// Semaphore used to synchronize between offscreen and final scene render pass
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VkSemaphore semaphore = VK_NULL_HANDLE;
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} offscreenPass;
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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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enableTextOverlay = true;
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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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// Frame buffer
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vkDestroySampler(device, offscreenPass.depthSampler, nullptr);
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// Color attachment
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vkDestroyImageView(device, offscreenPass.color.view, nullptr);
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vkDestroyImage(device, offscreenPass.color.image, nullptr);
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vkFreeMemory(device, offscreenPass.color.mem, nullptr);
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// Depth attachment
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vkDestroyImageView(device, offscreenPass.depth.view, nullptr);
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vkDestroyImage(device, offscreenPass.depth.image, nullptr);
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vkFreeMemory(device, offscreenPass.depth.mem, nullptr);
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vkDestroyFramebuffer(device, offscreenPass.frameBuffer, nullptr);
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vkDestroyRenderPass(device, offscreenPass.renderPass, nullptr);
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vkDestroyPipeline(device, pipelines.quad, nullptr);
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vkDestroyPipeline(device, pipelines.offscreen, nullptr);
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vkDestroyPipeline(device, pipelines.scene, 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, &uniformData.offscreen);
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vkTools::destroyUniformData(device, &uniformData.scene);
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vkFreeCommandBuffers(device, cmdPool, 1, &offscreenPass.commandBuffer);
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vkDestroySemaphore(device, offscreenPass.semaphore, nullptr);
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}
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// Set up a separate render pass for the offscreen frame buffer
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// This is necessary as the offscreen frame buffer attachments use formats different to those from the example render pass
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void prepareOffscreenRenderpass()
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{
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// todo: no color attachment required
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VkAttachmentDescription attDesc[2];
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attDesc[0].format = FB_COLOR_FORMAT;
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attDesc[0].samples = VK_SAMPLE_COUNT_1_BIT;
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attDesc[0].loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
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attDesc[0].storeOp = VK_ATTACHMENT_STORE_OP_DONT_CARE; // We won't sample from color, so throw away
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attDesc[0].stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
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attDesc[0].stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
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attDesc[0].initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
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attDesc[0].finalLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
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attDesc[0].flags = VK_FLAGS_NONE;
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attDesc[1].format = DEPTH_FORMAT;
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attDesc[1].samples = VK_SAMPLE_COUNT_1_BIT;
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attDesc[1].loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
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attDesc[1].storeOp = VK_ATTACHMENT_STORE_OP_STORE; // We will read from depth, so it's important to store the depth attachment results
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attDesc[1].stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
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attDesc[1].stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
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attDesc[1].initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
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attDesc[1].finalLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
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attDesc[1].flags = VK_FLAGS_NONE;
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VkAttachmentReference colorReference = {};
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colorReference.attachment = 0;
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colorReference.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
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VkAttachmentReference depthReference = {};
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depthReference.attachment = 1;
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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.colorAttachmentCount = 1;
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subpass.pColorAttachments = &colorReference;
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subpass.pDepthStencilAttachment = &depthReference;
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// Use subpass dependencies for layout 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 renderPassCreateInfo = vkTools::initializers::renderPassCreateInfo();
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renderPassCreateInfo.attachmentCount = 2;
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renderPassCreateInfo.pAttachments = attDesc;
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renderPassCreateInfo.subpassCount = 1;
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renderPassCreateInfo.pSubpasses = &subpass;
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renderPassCreateInfo.dependencyCount = static_cast<uint32_t>(dependencies.size());
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renderPassCreateInfo.pDependencies = dependencies.data();
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VK_CHECK_RESULT(vkCreateRenderPass(device, &renderPassCreateInfo, nullptr, &offscreenPass.renderPass));
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}
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// Setup the offscreen framebuffer for rendering the scene from light's point-of-view to
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// The depth attachment of this framebuffer will then be used to sample from in the fragment shader of the shadowing pass
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void prepareOffscreenFramebuffer()
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{
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offscreenPass.width = SHADOWMAP_DIM;
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offscreenPass.height = SHADOWMAP_DIM;
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VkFormat fbColorFormat = FB_COLOR_FORMAT;
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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 = offscreenPass.width;
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image.extent.height = offscreenPass.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 = 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;
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VkMemoryAllocateInfo memAlloc = vkTools::initializers::memoryAllocateInfo();
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VkMemoryRequirements memReqs;
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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.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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VK_CHECK_RESULT(vkCreateImage(device, &image, nullptr, &offscreenPass.color.image));
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vkGetImageMemoryRequirements(device, offscreenPass.color.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, &offscreenPass.color.mem));
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VK_CHECK_RESULT(vkBindImageMemory(device, offscreenPass.color.image, offscreenPass.color.mem, 0));
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colorImageView.image = offscreenPass.color.image;
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VK_CHECK_RESULT(vkCreateImageView(device, &colorImageView, nullptr, &offscreenPass.color.view));
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// Depth stencil attachment
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image.format = DEPTH_FORMAT;
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// We will sample directly from the depth attachment for the shadow mapping
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image.usage = VK_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT | VK_IMAGE_USAGE_SAMPLED_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.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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VK_CHECK_RESULT(vkCreateImage(device, &image, nullptr, &offscreenPass.depth.image));
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vkGetImageMemoryRequirements(device, offscreenPass.depth.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, &offscreenPass.depth.mem));
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VK_CHECK_RESULT(vkBindImageMemory(device, offscreenPass.depth.image, offscreenPass.depth.mem, 0));
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depthStencilView.image = offscreenPass.depth.image;
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VK_CHECK_RESULT(vkCreateImageView(device, &depthStencilView, nullptr, &offscreenPass.depth.view));
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// Create sampler to sample from to depth attachment
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// Used to sample in the fragment shader for shadowed rendering
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VkSamplerCreateInfo sampler = vkTools::initializers::samplerCreateInfo();
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sampler.magFilter = SHADOWMAP_FILTER;
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sampler.minFilter = SHADOWMAP_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 = 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, &offscreenPass.depthSampler));
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VkImageView attachments[2];
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attachments[0] = offscreenPass.color.view;
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attachments[1] = offscreenPass.depth.view;
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prepareOffscreenRenderpass();
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// Create frame buffer
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VkFramebufferCreateInfo fbufCreateInfo = vkTools::initializers::framebufferCreateInfo();
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fbufCreateInfo.renderPass = offscreenPass.renderPass;
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fbufCreateInfo.attachmentCount = 2;
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fbufCreateInfo.pAttachments = attachments;
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fbufCreateInfo.width = offscreenPass.width;
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fbufCreateInfo.height = offscreenPass.height;
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fbufCreateInfo.layers = 1;
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VK_CHECK_RESULT(vkCreateFramebuffer(device, &fbufCreateInfo, nullptr, &offscreenPass.frameBuffer));
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}
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void buildOffscreenCommandBuffer()
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{
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if (offscreenPass.commandBuffer == VK_NULL_HANDLE)
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{
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offscreenPass.commandBuffer = VulkanExampleBase::createCommandBuffer(VK_COMMAND_BUFFER_LEVEL_PRIMARY, false);
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}
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if (offscreenPass.semaphore == VK_NULL_HANDLE)
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{
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// Create a semaphore used to synchronize offscreen rendering and usage
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VkSemaphoreCreateInfo semaphoreCreateInfo = vkTools::initializers::semaphoreCreateInfo();
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VK_CHECK_RESULT(vkCreateSemaphore(device, &semaphoreCreateInfo, nullptr, &offscreenPass.semaphore));
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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 = vkTools::initializers::renderPassBeginInfo();
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renderPassBeginInfo.renderPass = offscreenPass.renderPass;
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renderPassBeginInfo.framebuffer = offscreenPass.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 = offscreenPass.width;
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renderPassBeginInfo.renderArea.extent.height = offscreenPass.height;
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renderPassBeginInfo.clearValueCount = 2;
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renderPassBeginInfo.pClearValues = clearValues;
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VK_CHECK_RESULT(vkBeginCommandBuffer(offscreenPass.commandBuffer, &cmdBufInfo));
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VkViewport viewport = vkTools::initializers::viewport((float)offscreenPass.width, (float)offscreenPass.height, 0.0f, 1.0f);
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vkCmdSetViewport(offscreenPass.commandBuffer, 0, 1, &viewport);
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VkRect2D scissor = vkTools::initializers::rect2D(offscreenPass.width, offscreenPass.height, 0, 0);
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vkCmdSetScissor(offscreenPass.commandBuffer, 0, 1, &scissor);
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// Set depth bias (aka "Polygon offset")
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// Required to avoid shadow mapping artefacts
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vkCmdSetDepthBias(
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offscreenPass.commandBuffer,
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depthBiasConstant,
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0.0f,
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depthBiasSlope);
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vkCmdBeginRenderPass(offscreenPass.commandBuffer, &renderPassBeginInfo, VK_SUBPASS_CONTENTS_INLINE);
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vkCmdBindPipeline(offscreenPass.commandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.offscreen);
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vkCmdBindDescriptorSets(offscreenPass.commandBuffer, 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(offscreenPass.commandBuffer, VERTEX_BUFFER_BIND_ID, 1, &meshes.scene.vertices.buf, offsets);
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vkCmdBindIndexBuffer(offscreenPass.commandBuffer, meshes.scene.indices.buf, 0, VK_INDEX_TYPE_UINT32);
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vkCmdDrawIndexed(offscreenPass.commandBuffer, meshes.scene.indexCount, 1, 0, 0, 0);
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vkCmdEndRenderPass(offscreenPass.commandBuffer);
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VK_CHECK_RESULT(vkEndCommandBuffer(offscreenPass.commandBuffer));
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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;
|
|
|
|
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 = 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]);
|
|
|
|
VK_CHECK_RESULT(vkEndCommandBuffer(drawCmdBuffers[i]));
|
|
}
|
|
}
|
|
|
|
void loadMeshes()
|
|
{
|
|
loadMesh(getAssetPath() + "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);
|
|
|
|
VK_CHECK_RESULT(vkCreateDescriptorPool(device, &descriptorPoolInfo, nullptr, &descriptorPool));
|
|
}
|
|
|
|
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());
|
|
|
|
VK_CHECK_RESULT(vkCreateDescriptorSetLayout(device, &descriptorLayout, nullptr, &descriptorSetLayout));
|
|
|
|
VkPipelineLayoutCreateInfo pPipelineLayoutCreateInfo =
|
|
vkTools::initializers::pipelineLayoutCreateInfo(
|
|
&descriptorSetLayout,
|
|
1);
|
|
|
|
VK_CHECK_RESULT(vkCreatePipelineLayout(device, &pPipelineLayoutCreateInfo, nullptr, &pipelineLayouts.quad));
|
|
|
|
// Offscreen pipeline layout
|
|
VK_CHECK_RESULT(vkCreatePipelineLayout(device, &pPipelineLayoutCreateInfo, nullptr, &pipelineLayouts.offscreen));
|
|
}
|
|
|
|
void setupDescriptorSets()
|
|
{
|
|
// Textured quad descriptor set
|
|
VkDescriptorSetAllocateInfo allocInfo =
|
|
vkTools::initializers::descriptorSetAllocateInfo(
|
|
descriptorPool,
|
|
&descriptorSetLayout,
|
|
1);
|
|
|
|
VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &allocInfo, &descriptorSet));
|
|
|
|
// Image descriptor for the shadow map attachment
|
|
VkDescriptorImageInfo texDescriptor =
|
|
vkTools::initializers::descriptorImageInfo(
|
|
offscreenPass.depthSampler,
|
|
offscreenPass.depth.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
|
|
VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &allocInfo, &descriptorSets.offscreen));
|
|
|
|
std::vector<VkWriteDescriptorSet> offScreenWriteDescriptorSets =
|
|
{
|
|
// Binding 0 : Vertex shader uniform buffer
|
|
vkTools::initializers::writeDescriptorSet(
|
|
descriptorSets.offscreen,
|
|
VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
|
|
0,
|
|
&uniformData.offscreen.descriptor),
|
|
};
|
|
vkUpdateDescriptorSets(device, offScreenWriteDescriptorSets.size(), offScreenWriteDescriptorSets.data(), 0, NULL);
|
|
|
|
// 3D scene
|
|
VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &allocInfo, &descriptorSets.scene));
|
|
|
|
// Image descriptor for the shadow map attachment
|
|
texDescriptor.sampler = offscreenPass.depthSampler;
|
|
texDescriptor.imageView = offscreenPass.depth.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_NONE,
|
|
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;
|
|
|
|
shaderStages[0] = loadShader(getAssetPath() + "shaders/shadowmapping/quad.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
|
|
shaderStages[1] = loadShader(getAssetPath() + "shaders/shadowmapping/quad.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
|
|
|
|
VkGraphicsPipelineCreateInfo pipelineCreateInfo =
|
|
vkTools::initializers::pipelineCreateInfo(
|
|
pipelineLayouts.quad,
|
|
renderPass,
|
|
0);
|
|
|
|
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();
|
|
|
|
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCreateInfo, nullptr, &pipelines.quad));
|
|
|
|
// 3D scene
|
|
shaderStages[0] = loadShader(getAssetPath() + "shaders/shadowmapping/scene.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
|
|
shaderStages[1] = loadShader(getAssetPath() + "shaders/shadowmapping/scene.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
|
|
rasterizationState.cullMode = VK_CULL_MODE_BACK_BIT;
|
|
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCreateInfo, nullptr, &pipelines.scene));
|
|
|
|
// Offscreen pipeline
|
|
shaderStages[0] = loadShader(getAssetPath() + "shaders/shadowmapping/offscreen.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
|
|
shaderStages[1] = loadShader(getAssetPath() + "shaders/shadowmapping/offscreen.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
|
|
// 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);
|
|
|
|
pipelineCreateInfo.layout = pipelineLayouts.offscreen;
|
|
pipelineCreateInfo.renderPass = offscreenPass.renderPass;
|
|
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCreateInfo, nullptr, &pipelines.offscreen));
|
|
}
|
|
|
|
// Prepare and initialize uniform buffer containing shader uniforms
|
|
void prepareUniformBuffers()
|
|
{
|
|
// Debug quad vertex shader uniform buffer block
|
|
createBuffer(
|
|
VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
|
|
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
|
|
sizeof(uboVSscene),
|
|
nullptr,
|
|
&uniformDataVS.buffer,
|
|
&uniformDataVS.memory,
|
|
&uniformDataVS.descriptor);
|
|
|
|
// Offscreen vertex shader uniform buffer block
|
|
createBuffer(
|
|
VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
|
|
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
|
|
sizeof(uboOffscreenVS),
|
|
nullptr,
|
|
&uniformData.offscreen.buffer,
|
|
&uniformData.offscreen.memory,
|
|
&uniformData.offscreen.descriptor);
|
|
|
|
// Scene vertex shader uniform buffer block
|
|
createBuffer(
|
|
VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
|
|
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_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(2.5f / AR, 0.0f, 0.0f, 2.5f, -1.0f, 1.0f);
|
|
uboVSquad.model = glm::mat4();
|
|
|
|
uint8_t *pData;
|
|
VK_CHECK_RESULT(vkMapMemory(device, uniformDataVS.memory, 0, sizeof(uboVSquad), 0, (void **)&pData));
|
|
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(0.0f, 1.0f, 0.0f));
|
|
}
|
|
|
|
uboVSscene.depthBiasMVP = uboOffscreenVS.depthMVP;
|
|
|
|
VK_CHECK_RESULT(vkMapMemory(device, uniformData.scene.memory, 0, sizeof(uboVSscene), 0, (void **)&pData));
|
|
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(0.0f), glm::vec3(0, 1, 0));
|
|
glm::mat4 depthModelMatrix = glm::mat4();
|
|
|
|
uboOffscreenVS.depthMVP = depthProjectionMatrix * depthViewMatrix * depthModelMatrix;
|
|
|
|
uint8_t *pData;
|
|
VK_CHECK_RESULT(vkMapMemory(device, uniformData.offscreen.memory, 0, sizeof(uboOffscreenVS), 0, (void **)&pData));
|
|
memcpy(pData, &uboOffscreenVS, sizeof(uboOffscreenVS));
|
|
vkUnmapMemory(device, uniformData.offscreen.memory);
|
|
}
|
|
|
|
void draw()
|
|
{
|
|
VulkanExampleBase::prepareFrame();
|
|
|
|
// The scene render command buffer has to wait for the offscreen rendering (and transfer) to be finished before using the shadow map
|
|
// Therefore we synchronize using an additional semaphore
|
|
|
|
// Offscreen rendering
|
|
|
|
// Wait for swap chain presentation to finish
|
|
submitInfo.pWaitSemaphores = &semaphores.presentComplete;
|
|
// Signal ready with offscreen semaphore
|
|
submitInfo.pSignalSemaphores = &offscreenPass.semaphore;
|
|
|
|
// Submit work
|
|
submitInfo.commandBufferCount = 1;
|
|
submitInfo.pCommandBuffers = &offscreenPass.commandBuffer;
|
|
VK_CHECK_RESULT(vkQueueSubmit(queue, 1, &submitInfo, VK_NULL_HANDLE));
|
|
|
|
// Scene rendering
|
|
|
|
// Wait for offscreen semaphore
|
|
submitInfo.pWaitSemaphores = &offscreenPass.semaphore;;
|
|
// 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();
|
|
generateQuad();
|
|
loadMeshes();
|
|
prepareOffscreenFramebuffer();
|
|
setupVertexDescriptions();
|
|
prepareUniformBuffers();
|
|
setupDescriptorSetLayout();
|
|
preparePipelines();
|
|
setupDescriptorPool();
|
|
setupDescriptorSets();
|
|
buildCommandBuffers();
|
|
buildOffscreenCommandBuffer();
|
|
prepared = true;
|
|
}
|
|
|
|
virtual void render()
|
|
{
|
|
if (!prepared)
|
|
return;
|
|
draw();
|
|
if (!paused)
|
|
{
|
|
updateLight();
|
|
updateUniformBufferOffscreen();
|
|
updateUniformBuffers();
|
|
}
|
|
}
|
|
|
|
virtual void viewChanged()
|
|
{
|
|
updateUniformBufferOffscreen();
|
|
updateUniformBuffers();
|
|
}
|
|
|
|
void toggleShadowMapDisplay()
|
|
{
|
|
displayShadowMap = !displayShadowMap;
|
|
buildCommandBuffers();
|
|
}
|
|
|
|
void toogleLightPOV()
|
|
{
|
|
lightPOV = !lightPOV;
|
|
viewChanged();
|
|
}
|
|
|
|
virtual void keyPressed(uint32_t keyCode)
|
|
{
|
|
switch (keyCode)
|
|
{
|
|
case KEY_S:
|
|
case GAMEPAD_BUTTON_A:
|
|
toggleShadowMapDisplay();
|
|
break;
|
|
case KEY_L:
|
|
case GAMEPAD_BUTTON_X:
|
|
toogleLightPOV();
|
|
break;
|
|
}
|
|
}
|
|
|
|
virtual void getOverlayText(VulkanTextOverlay *textOverlay)
|
|
{
|
|
#if defined(__ANDROID__)
|
|
textOverlay->addText("Press \"Button A\" to toggle shadow map", 5.0f, 85.0f, VulkanTextOverlay::alignLeft);
|
|
textOverlay->addText("Press \"Button X\" to toggle light's pov", 5.0f, 100.0f, VulkanTextOverlay::alignLeft);
|
|
#else
|
|
textOverlay->addText("Press \"s\" to toggle shadow map", 5.0f, 85.0f, VulkanTextOverlay::alignLeft);
|
|
textOverlay->addText("Press \"l\" to toggle light's pov", 5.0f, 100.0f, VulkanTextOverlay::alignLeft);
|
|
#endif
|
|
}
|
|
|
|
};
|
|
|
|
VULKAN_EXAMPLE_MAIN()
|