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main.cpp
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#define GLFW_INCLUDE_VULKAN
#include <GLFW/glfw3.h>
//#define GLM_FORCE_DEFAULT_ALIGNED_GENTYPES
#include <iostream>
#include <stdexcept>
#include <cstdlib>
#include <cstdio>
#include <optional>
#include <set>
#include <limits>
#include <algorithm>
#include <fstream>
#include <chrono>
#include <array>
#include "ansi.h"
#include <vulkan/vk_enum_string_helper.h>
#include "worldgenerator.h"
#include "fontrenderer.h"
static bool platformIsLittleEndian() {
unsigned int t = 1;
return (reinterpret_cast<char*>(&t))[0] == 1;
}
struct Camera {
alignas(16) glm::vec3 position = glm::vec3(0, 0, 10.0);
alignas(16) glm::vec3 forward = glm::vec3(0, 1, 0);
alignas(16) glm::vec3 up = glm::vec3(0, 0, 1);
alignas(16) glm::vec3 right = glm::vec3(1, 0, 0);
alignas(4) float cur_time = 0.0f;
alignas(16) glm::vec3 sunDirection = glm::vec3(-1, -1, -1);
};
static VkVertexInputBindingDescription getVertexBindingDescription() {
VkVertexInputBindingDescription bindingDescription {};
bindingDescription.binding = 0;
bindingDescription.stride = sizeof(Vertex);
bindingDescription.inputRate = VK_VERTEX_INPUT_RATE_VERTEX;
return bindingDescription;
}
static std::array<VkVertexInputAttributeDescription, 2> getVertexAttributeDescriptions() {
std::array<VkVertexInputAttributeDescription, 2> attributeDescriptions {};
attributeDescriptions[0].binding = 0;
attributeDescriptions[0].location = 0;
attributeDescriptions[0].format = VK_FORMAT_R32G32_SFLOAT;
attributeDescriptions[0].offset = offsetof(Vertex, pos);
attributeDescriptions[1].binding = 0;
attributeDescriptions[1].location = 1;
attributeDescriptions[1].format = VK_FORMAT_R32G32_SFLOAT;
attributeDescriptions[1].offset = offsetof(Vertex, texCoord);
return attributeDescriptions;
}
/* Vertex arrays for framebuffer quad */
const std::vector<Vertex> vertices = {
{{-1.0f, -1.0f}, {0.0f, 0.0f}},
{{1.0f, -1.0f}, {1.0f, 0.0f}},
{{1.0f, 1.0f}, {1.0f, 1.0f}},
{{-1.0f, 1.0f}, {0.0f, 1.0f}}
};
const std::vector<uint16_t> indices = {
0, 1, 2, 2, 3, 0
};
const uint32_t WIDTH = 1920;
const uint32_t HEIGHT = 1080;
const uint32_t RENDER_SCALE = 2;
struct UniformBufferObject {
alignas(16) glm::mat4 model;
alignas(16) glm::mat4 view;
alignas(16) glm::mat4 proj;
};
struct DistancesPushConstants {
alignas(16) glm::ivec3 curVoxelOffset;
};
const int MAX_FRAMES_IN_FLIGHT = 2;
uint32_t currentFrame = 0;
uint64_t frameCounter = 0;
const std::vector<const char*> validationLayers = {
"VK_LAYER_KHRONOS_validation"
};
const std::vector<const char*> deviceExtensions = {
VK_KHR_SWAPCHAIN_EXTENSION_NAME,
VK_KHR_8BIT_STORAGE_EXTENSION_NAME,
VK_KHR_SHADER_FLOAT16_INT8_EXTENSION_NAME
};
#define NDEBUG
#ifdef NDEBUG
const bool enableValidationLayers = false;
#else
const bool enableValidationLayers = true;
#endif // NDEBUG
static std::vector<char> readFile(const std::string& filename) {
std::ifstream file(filename, std::ios::ate | std::ios::binary);
if (!file.is_open()) {
throw std::runtime_error("failed to open file!");
}
size_t fileSize = (size_t) file.tellg();
std::vector<char> buffer(fileSize);
file.seekg(0);
file.read(buffer.data(), fileSize);
file.close();
return buffer;
}
VkResult CreateDebugUtilsMessengerEXT(VkInstance instance,
const VkDebugUtilsMessengerCreateInfoEXT* pCreateInfo,
const VkAllocationCallbacks* pAllocator,
VkDebugUtilsMessengerEXT* pDebugMessenger) {
auto func = (PFN_vkCreateDebugUtilsMessengerEXT) vkGetInstanceProcAddr(instance, "vkCreateDebugUtilsMessengerEXT");
if (func != nullptr) {
return func(instance, pCreateInfo, pAllocator, pDebugMessenger);
} else {
return VK_ERROR_EXTENSION_NOT_PRESENT;
}
}
void DestroyDebugUtilsMessengerEXT(VkInstance instance, VkDebugUtilsMessengerEXT debugMessenger,
const VkAllocationCallbacks* pAllocator) {
auto func = (PFN_vkDestroyDebugUtilsMessengerEXT) vkGetInstanceProcAddr(instance, "vkDestroyDebugUtilsMessengerEXT");
if (func != nullptr) {
func(instance, debugMessenger, pAllocator);
}
}
class Game {
public:
void run() {
littleEndian = platformIsLittleEndian();
console.setGameInstance(this);
initWindow();
initVulkan();
mainLoop();
cleanup();
}
private:
/** Console class **/
static constexpr int MAX_LINE = 256;
static constexpr int MAX_OUTPUT_LINES = 16;
class Console
{
public:
Console() {
clearInput();
clearOutput();
}
~Console() {}
void setGameInstance(Game* g) {
instance = g;
}
void enterCharacter(char c) {
if (commandCursor < (MAX_LINE - 2)) {
commandBuf[commandCursor] = c;
commandCursor++;
_latestTextRendered = false;
}
}
void deleteCharacter() {
if (commandCursor > 1) {
commandCursor--;
commandBuf[commandCursor] = '\0';
_latestTextRendered = false;
}
}
void runCommand() {
if (hasInput()) {
if (strcmp(commandBuf + 1, "help") == 0) {
snprintf(scratch, sizeof(scratch), "Valid commands:\n"
"%s: shows this message.\n"
"%s: print a message.\n"
"%s: quit the game.\n"
"%s: get current position\n"
"%s: set position",
"help", "echo <message>", "exit/quit", "getpos", "setpos x,y,z");
strcpy(output, scratch);
} else if (strncmp(commandBuf + 1, "echo ", 5) == 0) {
strcpy(output, commandBuf + 6);
} else if (strcmp(commandBuf + 1, "exit") == 0 || strcmp(commandBuf + 1, "quit") == 0) {
instance->shouldQuit = true;
} else if (strcmp(commandBuf + 1, "getpos") == 0) {
snprintf(scratch, sizeof(scratch), "(%f, %f, %f)", instance->camera.position.x, instance->camera.position.y, instance->camera.position.z);
strcpy(output, scratch);
} else if (strncmp(commandBuf + 1, "setpos ", 6) == 0) {
float readPositions[3] = {0.0f, 0.0f, 0.0f};
int matched = sscanf(commandBuf + 8, "%f,%f,%f", &readPositions[0], &readPositions[1], &readPositions[2]);
if (matched == 3) {
instance->camera.position = glm::vec3(readPositions[0], readPositions[1], readPositions[2]);
} else {
strcpy(output, "Invalid position.");
}
} else {
strcpy(output, "Invalid command.");
}
clearInput();
_latestTextRendered = false;
}
}
void toggle() { enabled = !enabled; }
bool isEnabled() { return enabled; }
bool hasOutput() { return output[0] != '\0'; }
bool hasInput() { return commandBuf[1] != '\0'; }
const char* getCommandBuf() { return commandBuf; }
const char* getOutputBuf() { return output; }
bool latestTextRendered() { return _latestTextRendered; }
void setRenderedText() { _latestTextRendered = true; }
private:
void clearOutput() {
output[0] = '\0';
}
void clearInput() {
memset(commandBuf, '\0', MAX_LINE);
commandBuf[0] = '>';
commandCursor = 1;
}
bool enabled = false;
bool _latestTextRendered = false;
char commandBuf[MAX_LINE];
int commandCursor = 0;
char output[MAX_OUTPUT_LINES * MAX_LINE];
char scratch[MAX_OUTPUT_LINES * MAX_LINE];
Game* instance;
};
/** Variables **/
bool littleEndian;
GLFWwindow* window;
VkInstance instance;
VkPhysicalDevice physicalDevice = VK_NULL_HANDLE;
VkDevice device;
VkQueue graphicsQueue;
VkQueue presentQueue;
VkQueue computeQueue;
VkSurfaceKHR surface;
VkSwapchainKHR swapChain;
std::vector<VkImage> swapChainImages;
VkFormat swapChainImageFormat;
VkExtent2D swapChainExtent;
std::vector<VkImageView> swapChainImageViews;
VkRenderPass renderPass;
VkDescriptorPool descriptorPool;
std::vector<VkDescriptorSet> descriptorSets;
VkDescriptorSetLayout descriptorSetLayout;
VkPipelineLayout pipelineLayout;
VkPipeline graphicsPipeline;
std::vector<VkFramebuffer> swapChainFramebuffers;
VkCommandPool commandPool;
std::vector<VkCommandBuffer> commandBuffers;
std::vector<VkCommandBuffer> computeCommandBuffers;
std::vector<VkCommandBuffer> computeDistancesCommandBuffers;
std::vector<VkSemaphore> imageAvailableSemaphores;
std::vector<VkSemaphore> computeFinishedSemaphores;
std::vector<VkSemaphore> renderFinishedSemaphores;
std::vector<VkFence> inFlightFences;
std::vector<VkFence> computeFinishedFences;
VkBuffer vertexBuffer;
VkDeviceMemory vertexBufferMemory;
VkBuffer indexBuffer;
VkDeviceMemory indexBufferMemory;
std::vector<VkBuffer> uniformBuffers;
std::vector<VkDeviceMemory> uniformBuffersMemory;
std::vector<void*> uniformBuffersMapped;
std::vector<VkImage> renderImages;
std::vector<VkDeviceMemory> renderImagesMemory;
std::vector<VkImageView> renderImageViews;
VkSampler textureSampler;
/* Font rendering */
FontRenderer fontRenderer;
FontMesh renderedFont;
FontMesh renderedFpsCounter;
VkImage fontImage;
VkDeviceMemory fontImageMemory;
VkImageView fontImageView;
VkSampler fontSampler;
VkBuffer textBuffer;
VkDeviceMemory textBufferMemory;
VkBuffer textIndexBuffer;
VkDeviceMemory textIndexBufferMemory;
VkBuffer fpsCounterBuffer;
VkDeviceMemory fpsCounterMemory;
VkBuffer fpsCounterIndexBuffer;
VkDeviceMemory fpsCounterIndexMemory;
std::vector<VkDescriptorSet> fontDescriptorSets;
/* Console */
Console console;
/* Compute pipeline */
VkDescriptorSetLayout computeDescriptorSetLayout;
VkDescriptorPool computeDescriptorPool;
std::vector<VkDescriptorSet> computeDescriptorSets;
VkPipeline computePipeline;
VkPipelineLayout computePipelineLayout;
/*
std::vector<VkBuffer> computeUniformBuffers;
std::vector<VkDeviceMemory> computeUniformsMemory;
std::vector<void*> computeUniformsMapped;
*/
std::vector<VkBuffer> voxelBuffers;
std::vector<VkDeviceMemory> voxelBuffersMemory;
/* Compute - calculating distance field */
VkDescriptorSetLayout computeDistancesSetLayout;
VkDescriptorPool computeDistancesPool;
std::vector<VkDescriptorSet> computeDistancesDescriptorSets;
VkPipeline computeDistancesPipeline;
VkPipelineLayout computeDistancesPipelineLayout;
/* Debug messenger */
VkDebugUtilsMessengerEXT debugMessenger;
/* Voxels */
LoadedChunks* chunks = nullptr;
/* Camera / player */
Camera camera;
glm::ivec2 lastUpdatePlayerChunk;
bool keyPressed[GLFW_KEY_LAST+1];
double cursorX;
double cursorY;
double cursorLastX;
double cursorLastY;
double cameraRotY = 0;
double cameraRotZ = 0;
static constexpr double minPitch = -1.5;
static constexpr double maxPitch = 1.5;
static constexpr double sensitivity = 2.0;
std::chrono::time_point<std::chrono::high_resolution_clock> lastFrameStart;
bool framebufferResized = false;
bool shouldQuit = false;
double lastFrameFps = 0.0;
bool fpsCounterEnabled = false;
FontMesh getMeshForFpsCounter(double fps) {
FontMesh result;
char scratch[64];
snprintf(scratch, 64, "%.0f @ %dx%d", fps, swapChainExtent.width / RENDER_SCALE, swapChainExtent.height / RENDER_SCALE);
scratch[63] = '\0';
glm::vec2 cursor(-1.0, -1.0);
/* Title text */
const char* titleText = "voxel renderer";
double labelWidth = fontRenderer.getGlyphWidthScreen() * strlen(titleText) + CONSOLE_MARGIN * 2.0;
double labelHeight = fontRenderer.getGlyphHeightScreen() + CONSOLE_MARGIN * 2.0;
fontRenderer.addMeshForBG(result, FONT_BG2_UV, cursor, {-1.0 + labelWidth, cursor.y + labelHeight});
fontRenderer.addMeshForLabel(result, titleText, {cursor.x + CONSOLE_MARGIN, cursor.y + CONSOLE_MARGIN});
cursor.y += labelHeight;
/* FPS counter */
labelWidth = fontRenderer.getGlyphWidthScreen() * strlen(scratch) + CONSOLE_MARGIN * 2.0;
fontRenderer.addMeshForBG(result, FONT_BG2_UV, cursor, {-1.0 + labelWidth, cursor.y + labelHeight});
fontRenderer.addMeshForLabel(result, scratch, {cursor.x + CONSOLE_MARGIN, cursor.y + CONSOLE_MARGIN});
cursor.y += labelHeight;
/* Position display */
snprintf(scratch, 64, "(%.2f, %.2f, %.2f)", camera.position.x, camera.position.y, camera.position.z);
labelWidth = fontRenderer.getGlyphWidthScreen() * strlen(scratch) + CONSOLE_MARGIN * 2.0;
fontRenderer.addMeshForBG(result, FONT_BG2_UV, cursor, {-1.0 + labelWidth, cursor.y + labelHeight});
fontRenderer.addMeshForLabel(result, scratch, {cursor.x + CONSOLE_MARGIN, cursor.y + CONSOLE_MARGIN});
cursor.y += labelHeight;
/* Chunk display */
snprintf(scratch, 64, "Chunk: (%d, %d)", lastUpdatePlayerChunk.x, lastUpdatePlayerChunk.y);
labelWidth = fontRenderer.getGlyphWidthScreen() * strlen(scratch) + CONSOLE_MARGIN * 2.0;
fontRenderer.addMeshForBG(result, FONT_BG2_UV, cursor, {-1.0 + labelWidth, cursor.y + labelHeight});
fontRenderer.addMeshForLabel(result, scratch, {cursor.x + CONSOLE_MARGIN, cursor.y + CONSOLE_MARGIN});
return result;
}
FontMesh getMeshForConsole() {
FontMesh result;
/* Command buffer */
glm::vec2 cursor(-1.0 + CONSOLE_MARGIN, -1.0 + (fontRenderer.getGlyphHeightScreen() + 2.0 * CONSOLE_MARGIN) * 4.0);
fontRenderer.addMeshForBG(result, FONT_BG2_UV, {-1.0, cursor.y + fontRenderer.getGlyphHeightScreen()},
{1.0, cursor.y});
fontRenderer.addMeshForLabel(result, console.getCommandBuf(), cursor);
cursor.y += fontRenderer.getGlyphHeightScreen();
/* Output buffer */
if (console.hasOutput()) {
int numLines = 1;
int outputLength = strlen(console.getOutputBuf());
for (int i = 0; i < outputLength; i++) {
if (console.getOutputBuf()[i] == '\n') {
numLines++;
}
}
double outputHeight = fontRenderer.getGlyphHeightScreen() * double(numLines);
fontRenderer.addMeshForBG(result, FONT_BG2_UV, {-1.0, cursor.y},
{1.0, cursor.y + outputHeight});
fontRenderer.addMeshForLabel(result, console.getOutputBuf(), cursor);
}
return result;
}
/*
UTF-32 text input
Just used for ASCII input to console
*/
static void charCallback(GLFWwindow* window, unsigned int codepoint) {
Game* app = reinterpret_cast<Game*>(glfwGetWindowUserPointer(window));
if (app->console.isEnabled()) {
char c;
if (app->littleEndian) {
c = (reinterpret_cast<char *>(&codepoint))[0];
} else {
c = (reinterpret_cast<char *>(&codepoint))[3];
}
if (isPrintableAscii(c) && c != '`') {
app->console.enterCharacter(c);
}
}
}
static void keyCallback(GLFWwindow* window, int key, int scancode, int action, int mods) {
Game* app = reinterpret_cast<Game*>(glfwGetWindowUserPointer(window));
if (key <= GLFW_KEY_LAST && key >= 0) {
switch(action) {
case GLFW_PRESS:
if (key == GLFW_KEY_GRAVE_ACCENT) {
app->console.toggle();
} else if (!app->console.isEnabled() && (key == GLFW_KEY_Q)) {
app->shouldQuit = true;
} else if (app->console.isEnabled()) {
if (key == GLFW_KEY_ENTER) {
app->console.runCommand();
} else if (key == GLFW_KEY_BACKSPACE) {
app->console.deleteCharacter();
}
} else if (key == GLFW_KEY_F1) {
app->fpsCounterEnabled = !app->fpsCounterEnabled;
}
app->keyPressed[key] = true;
break;
case GLFW_RELEASE:
app->keyPressed[key] = false;
break;
case GLFW_REPEAT:
default:
break;
}
}
}
static void cursorPosCallback(GLFWwindow* window, double xpos, double ypos) {
Game* app = reinterpret_cast<Game*>(glfwGetWindowUserPointer(window));
app->cursorLastX = app->cursorX;
app->cursorLastY = app->cursorY;
app->cursorX = xpos;
app->cursorY = ypos;
}
static VKAPI_ATTR VkBool32 VKAPI_CALL debugCallback(
VkDebugUtilsMessageSeverityFlagBitsEXT messageSeverity,
VkDebugUtilsMessageTypeFlagsEXT messageType,
const VkDebugUtilsMessengerCallbackDataEXT* pCallbackData,
void *pUserData) {
std::stringstream ss;
switch (messageSeverity) {
case VK_DEBUG_UTILS_MESSAGE_SEVERITY_VERBOSE_BIT_EXT:
ss << "[Verbose] " << ANSI::escape(pCallbackData->pMessage, FAINT, FG_DEFAULT);
break;
case VK_DEBUG_UTILS_MESSAGE_SEVERITY_INFO_BIT_EXT:
ss << "[Info] " << ANSI::escape(pCallbackData->pMessage, FAINT, FG_DEFAULT);
break;
case VK_DEBUG_UTILS_MESSAGE_SEVERITY_WARNING_BIT_EXT:
ss << "[Warning] " << ANSI::escape(pCallbackData->pMessage, FG_DEFAULT, FG_YELLOW);
break;
case VK_DEBUG_UTILS_MESSAGE_SEVERITY_ERROR_BIT_EXT:
ss << ANSI::escape("[ERROR] ", BOLD, FG_RED) << ANSI::escape(pCallbackData->pMessage, BOLD, FG_RED);
break;
default:
break;
}
std::cout << ss.str() << std::endl;
return VK_FALSE;
}
void initWindow() {
glfwInit();
glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);
window = glfwCreateWindow(WIDTH, HEIGHT, "renderer", glfwGetPrimaryMonitor(), nullptr);
glfwSetWindowUserPointer(window, this);
glfwSetFramebufferSizeCallback(window, framebufferResizeCallback);
for (int i = 0; i < GLFW_KEY_LAST; i++) {
keyPressed[i] = false;
}
glfwSetCharCallback(window, charCallback);
glfwSetKeyCallback(window, keyCallback);
glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_DISABLED);
if (glfwRawMouseMotionSupported())
glfwSetInputMode(window, GLFW_RAW_MOUSE_MOTION, GLFW_TRUE);
glfwGetCursorPos(window, &cursorX, &cursorY);
cursorLastX = cursorX;
cursorLastY = cursorY;
//glfwSetCursorPosCallback(window, cursorPosCallback);
}
static void framebufferResizeCallback(GLFWwindow* window, int width, int height) {
auto app = reinterpret_cast<Game*>(glfwGetWindowUserPointer(window));
app->framebufferResized = true;
}
void initVulkan() {
createInstance();
setupDebugMessenger();
createSurface();
pickPhysicalDevice();
createLogicalDevice();
createSwapChain();
createImageViews();
createRenderPass();
createDescriptorSetLayout();
createGraphicsPipeline();
createFramebuffers();
createCommandPool();
createTextureSampler();
loadFont();
createFontImageView();
createFontSampler();
createVertexBuffer();
createIndexBuffer();
createTextBuffers();
createFpsCounterBuffers();
createUniformBuffers();
createVoxelBuffers();
createRenderImages();
createRenderImageViews();
createDescriptorPool();
createDescriptorSets();
createFontDescriptorSets();
createCommandBuffers();
createSyncObjects();
createComputeDescriptorSetLayout();
createComputePipeline();
createComputeDescriptorPool();
createComputeDescriptorSets();
// Compute distances
createComputeDistancesLayout();
createComputeDistancesPipeline();
createComputeDistancesPool();
createComputeDistancesDescriptorSets();
// Compute actual distances...
//computeVoxelDistances();
}
void populateDebugMessengerCreateInfo(VkDebugUtilsMessengerCreateInfoEXT& createInfo) {
createInfo = {};
createInfo.sType = VK_STRUCTURE_TYPE_DEBUG_UTILS_MESSENGER_CREATE_INFO_EXT;
createInfo.messageSeverity = VK_DEBUG_UTILS_MESSAGE_SEVERITY_VERBOSE_BIT_EXT |
VK_DEBUG_UTILS_MESSAGE_SEVERITY_WARNING_BIT_EXT |
VK_DEBUG_UTILS_MESSAGE_SEVERITY_ERROR_BIT_EXT;
createInfo.messageType = VK_DEBUG_UTILS_MESSAGE_TYPE_GENERAL_BIT_EXT |
VK_DEBUG_UTILS_MESSAGE_TYPE_VALIDATION_BIT_EXT |
VK_DEBUG_UTILS_MESSAGE_TYPE_PERFORMANCE_BIT_EXT;
createInfo.pfnUserCallback = debugCallback;
createInfo.pUserData = nullptr;
}
void setupDebugMessenger() {
if (!enableValidationLayers) return;
VkDebugUtilsMessengerCreateInfoEXT createInfo {};
populateDebugMessengerCreateInfo(createInfo);
if (CreateDebugUtilsMessengerEXT(instance, &createInfo, nullptr, &debugMessenger) != VK_SUCCESS) {
throw std::runtime_error("failed to set up debug messenger!");
}
}
void computeVoxelDistances() {
VkFence computeDistanceFence;
VkFenceCreateInfo computeFenceInfo {};
computeFenceInfo.sType = VK_STRUCTURE_TYPE_FENCE_CREATE_INFO;
computeFenceInfo.flags = 0;
if (vkCreateFence(device, &computeFenceInfo, nullptr, &computeDistanceFence) != VK_SUCCESS) {
throw std::runtime_error("Failed to create compute distance fences!");
}
const int workgroupSizeX = 8;
const int workgroupSizeY = 8;
const int workgroupSizeZ = 16;
VkCommandBufferBeginInfo beginInfo {};
beginInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
if (vkBeginCommandBuffer(computeDistancesCommandBuffers[0], &beginInfo) != VK_SUCCESS)
{
throw std::runtime_error("Failed to begin recording compute command buffer!");
}
vkCmdBindPipeline(computeDistancesCommandBuffers[0], VK_PIPELINE_BIND_POINT_COMPUTE, computeDistancesPipeline);
vkCmdBindDescriptorSets(computeDistancesCommandBuffers[0], VK_PIPELINE_BIND_POINT_COMPUTE, computeDistancesPipelineLayout,
0, 1, &computeDistancesDescriptorSets[0], 0, nullptr);
vkCmdDispatch(computeDistancesCommandBuffers[0], CHUNK_WIDTH_VOXELS / workgroupSizeX, CHUNK_WIDTH_VOXELS / workgroupSizeY, CHUNK_HEIGHT_VOXELS / workgroupSizeZ);
if (vkEndCommandBuffer(computeDistancesCommandBuffers[0]) != VK_SUCCESS)
{
throw std::runtime_error("Failed to record compute distances command buffer!");
}
VkSubmitInfo computeDistancesSubmitInfo {};
computeDistancesSubmitInfo.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
computeDistancesSubmitInfo.waitSemaphoreCount = 0;
computeDistancesSubmitInfo.pWaitSemaphores = nullptr;
computeDistancesSubmitInfo.pWaitDstStageMask = nullptr;
computeDistancesSubmitInfo.commandBufferCount = 1;
computeDistancesSubmitInfo.pCommandBuffers = &computeDistancesCommandBuffers[0];
computeDistancesSubmitInfo.signalSemaphoreCount = 0;
computeDistancesSubmitInfo.pSignalSemaphores = nullptr;
VkResult result;
if ((result = vkQueueSubmit(computeQueue, 1, &computeDistancesSubmitInfo, computeDistanceFence)) != VK_SUCCESS)
{
std::cerr << string_VkResult(result) << std::endl;
throw std::runtime_error("Failed to submit compute distances command buffer");
}
if ((result = vkWaitForFences(device, 1, &computeDistanceFence, VK_TRUE, UINT64_MAX)) != VK_SUCCESS)
{
std::cerr << "Error waiting for fence: " << string_VkResult(result) << std::endl;
throw std::runtime_error("Failed to wait for compute distances fence!");
}
vkDestroyFence(device, computeDistanceFence, nullptr);
for (int i = 1; i < MAX_FRAMES_IN_FLIGHT; i++) {
copyBuffer(voxelBuffers[0], voxelBuffers[i], sizeof(LoadedChunks));
}
}
void createComputeDistancesLayout() {
std::array<VkDescriptorSetLayoutBinding, 1> layoutBindings {};
layoutBindings[0].binding = 0;
layoutBindings[0].descriptorType = VK_DESCRIPTOR_TYPE_STORAGE_BUFFER;
layoutBindings[0].descriptorCount = 1;
layoutBindings[0].stageFlags = VK_SHADER_STAGE_COMPUTE_BIT;
layoutBindings[0].pImmutableSamplers = nullptr;
VkDescriptorSetLayoutCreateInfo layoutInfo {};
layoutInfo.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO;
layoutInfo.bindingCount = static_cast<uint32_t>(layoutBindings.size());
layoutInfo.pBindings = layoutBindings.data();
if (vkCreateDescriptorSetLayout(device, &layoutInfo, nullptr, &computeDistancesSetLayout) != VK_SUCCESS) {
throw std::runtime_error("Failed to create compute distance descriptor set layout!");
}
}
void createComputeDistancesPipeline() {
VkPipelineLayoutCreateInfo pipelineLayoutInfo {};
pipelineLayoutInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO;
pipelineLayoutInfo.setLayoutCount = 1;
pipelineLayoutInfo.pSetLayouts = &computeDistancesSetLayout;
// Push constant
/*
VkPushConstantRange pushConstantRange {};
pushConstantRange.offset = 0;
pushConstantRange.size = sizeof(DistancesPushConstants);
pushConstantRange.stageFlags = VK_SHADER_STAGE_COMPUTE_BIT;
pipelineLayoutInfo.pushConstantRangeCount = 1;
pipelineLayoutInfo.pPushConstantRanges = &pushConstantRange;
*/
if (vkCreatePipelineLayout(device, &pipelineLayoutInfo, nullptr, &computeDistancesPipelineLayout) != VK_SUCCESS) {
throw std::runtime_error("Failed to create compute distances pipeline layout!");
}
auto computeDistancesShaderCode = readFile("shaders/compute_distances.spv");
VkShaderModule computeDistancesShaderModule = createShaderModule(computeDistancesShaderCode);
VkPipelineShaderStageCreateInfo computeDistancesShaderStageInfo {};
computeDistancesShaderStageInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO;
computeDistancesShaderStageInfo.stage = VK_SHADER_STAGE_COMPUTE_BIT;
computeDistancesShaderStageInfo.module = computeDistancesShaderModule;
computeDistancesShaderStageInfo.pName = "main";
VkComputePipelineCreateInfo pipelineInfo {};
pipelineInfo.sType = VK_STRUCTURE_TYPE_COMPUTE_PIPELINE_CREATE_INFO;
pipelineInfo.layout = computeDistancesPipelineLayout;
pipelineInfo.stage = computeDistancesShaderStageInfo;
if (vkCreateComputePipelines(device, VK_NULL_HANDLE, 1, &pipelineInfo, nullptr,
&computeDistancesPipeline) != VK_SUCCESS) {
throw std::runtime_error("Failed to create compute distances pipeline!");
}
vkDestroyShaderModule(device, computeDistancesShaderModule, nullptr);
}
void createComputeDistancesPool() {
std::array<VkDescriptorPoolSize, 1> poolSizes {};
poolSizes[0].type = VK_DESCRIPTOR_TYPE_STORAGE_BUFFER;
poolSizes[0].descriptorCount = static_cast<uint32_t>(MAX_FRAMES_IN_FLIGHT);
VkDescriptorPoolCreateInfo poolInfo {};
poolInfo.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO;
poolInfo.poolSizeCount = static_cast<uint32_t>(poolSizes.size());
poolInfo.pPoolSizes = poolSizes.data();
poolInfo.maxSets = static_cast<uint32_t>(MAX_FRAMES_IN_FLIGHT);
poolInfo.flags = 0;
if (vkCreateDescriptorPool(device, &poolInfo, nullptr, &computeDistancesPool) != VK_SUCCESS) {
throw std::runtime_error("Failed to create compute distances descriptor pool!");
}
}
void createComputeDistancesDescriptorSets() {
std::vector<VkDescriptorSetLayout> layouts(MAX_FRAMES_IN_FLIGHT, computeDistancesSetLayout);
VkDescriptorSetAllocateInfo allocInfo {};
allocInfo.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO;
allocInfo.descriptorPool = computeDistancesPool;
allocInfo.descriptorSetCount = static_cast<uint32_t>(MAX_FRAMES_IN_FLIGHT);
allocInfo.pSetLayouts = layouts.data();
computeDistancesDescriptorSets.resize(MAX_FRAMES_IN_FLIGHT);
VkResult result = vkAllocateDescriptorSets(device, &allocInfo, computeDistancesDescriptorSets.data());
if (result != VK_SUCCESS) {
throw std::runtime_error("Failed to allocate compute distances descriptor sets!");
}
for (size_t i = 0; i < MAX_FRAMES_IN_FLIGHT; i++) {
VkDescriptorBufferInfo bufferInfo {};
bufferInfo.buffer = voxelBuffers[i];
bufferInfo.offset = 0;
bufferInfo.range = VK_WHOLE_SIZE;
std::array<VkWriteDescriptorSet, 1> descriptorWrites {};
descriptorWrites[0].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
descriptorWrites[0].dstSet = computeDistancesDescriptorSets[i];
descriptorWrites[0].dstBinding = 0;
descriptorWrites[0].dstArrayElement = 0;
descriptorWrites[0].descriptorType = VK_DESCRIPTOR_TYPE_STORAGE_BUFFER;
descriptorWrites[0].descriptorCount = 1;
descriptorWrites[0].pBufferInfo = &bufferInfo;
vkUpdateDescriptorSets(device, static_cast<uint32_t>(descriptorWrites.size()),
descriptorWrites.data(), 0, nullptr);
}
}
/*
void createComputeUniformBuffers() {
VkDeviceSize bufferSize = sizeof(Camera);
computeUniformBuffers.resize(MAX_FRAMES_IN_FLIGHT);
computeUniformsMemory.resize(MAX_FRAMES_IN_FLIGHT);
computeUniformsMapped.resize(MAX_FRAMES_IN_FLIGHT);
for (size_t i = 0; i < MAX_FRAMES_IN_FLIGHT; i++) {
createBuffer(bufferSize, VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
computeUniformBuffers[i], computeUniformsMemory[i]);
vkMapMemory(device, computeUniformsMemory[i], 0, bufferSize, 0, &computeUniformsMapped[i]);
}
}
*/
void createComputeDescriptorPool() {
std::array<VkDescriptorPoolSize, 2> poolSizes {};
poolSizes[0].type = VK_DESCRIPTOR_TYPE_STORAGE_IMAGE;
poolSizes[0].descriptorCount = static_cast<uint32_t>(MAX_FRAMES_IN_FLIGHT);
poolSizes[1].type = VK_DESCRIPTOR_TYPE_STORAGE_BUFFER;
poolSizes[1].descriptorCount = static_cast<uint32_t>(MAX_FRAMES_IN_FLIGHT);
VkDescriptorPoolCreateInfo poolInfo {};
poolInfo.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO;
poolInfo.poolSizeCount = static_cast<uint32_t>(poolSizes.size());
poolInfo.pPoolSizes = poolSizes.data();
poolInfo.maxSets = static_cast<uint32_t>(MAX_FRAMES_IN_FLIGHT);
poolInfo.flags = 0;
if (vkCreateDescriptorPool(device, &poolInfo, nullptr, &computeDescriptorPool) != VK_SUCCESS) {
throw std::runtime_error("failed to create compute descriptor pool!");
}
}
void createComputeDescriptorSets() {
std::vector<VkDescriptorSetLayout> layouts(MAX_FRAMES_IN_FLIGHT, computeDescriptorSetLayout);
VkDescriptorSetAllocateInfo allocInfo {};
allocInfo.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO;
allocInfo.descriptorPool = computeDescriptorPool;
allocInfo.descriptorSetCount = static_cast<uint32_t>(MAX_FRAMES_IN_FLIGHT);
allocInfo.pSetLayouts = layouts.data();
computeDescriptorSets.resize(MAX_FRAMES_IN_FLIGHT);
VkResult result = vkAllocateDescriptorSets(device, &allocInfo, computeDescriptorSets.data());
if (result != VK_SUCCESS) {
std::cout << string_VkResult(result) << std::endl;
throw std::runtime_error("failed to allocate compute descriptor sets!");
}
for (size_t i = 0; i < MAX_FRAMES_IN_FLIGHT; i++) {
VkDescriptorImageInfo outputImageInfo {};
outputImageInfo.sampler = textureSampler;
outputImageInfo.imageView = renderImageViews[i];
outputImageInfo.imageLayout = VK_IMAGE_LAYOUT_GENERAL;
VkDescriptorBufferInfo voxelBufferInfo {};
voxelBufferInfo.buffer = voxelBuffers[i];
voxelBufferInfo.offset = 0;
voxelBufferInfo.range = VK_WHOLE_SIZE;
std::array<VkWriteDescriptorSet, 2> descriptorWrites {};
descriptorWrites[0].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
descriptorWrites[0].dstSet = computeDescriptorSets[i];
descriptorWrites[0].dstBinding = 0;
descriptorWrites[0].dstArrayElement = 0;
descriptorWrites[0].descriptorType = VK_DESCRIPTOR_TYPE_STORAGE_IMAGE;
descriptorWrites[0].descriptorCount = 1;
descriptorWrites[0].pImageInfo = &outputImageInfo;
descriptorWrites[1].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
descriptorWrites[1].dstSet = computeDescriptorSets[i];
descriptorWrites[1].dstBinding = 1;
descriptorWrites[1].dstArrayElement = 0;
descriptorWrites[1].descriptorType = VK_DESCRIPTOR_TYPE_STORAGE_BUFFER;
descriptorWrites[1].descriptorCount = 1;
descriptorWrites[1].pBufferInfo = &voxelBufferInfo;
vkUpdateDescriptorSets(device, static_cast<uint32_t>(descriptorWrites.size()),
descriptorWrites.data(), 0, nullptr);
}
}
void updateComputeDescriptorSets() {
for (size_t i = 0; i < MAX_FRAMES_IN_FLIGHT; i++) {
VkDescriptorImageInfo outputImageInfo {};
outputImageInfo.sampler = textureSampler;
outputImageInfo.imageView = renderImageViews[i];
outputImageInfo.imageLayout = VK_IMAGE_LAYOUT_GENERAL;
VkWriteDescriptorSet descriptorWrite {};
descriptorWrite.sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
descriptorWrite.dstSet = computeDescriptorSets[i];
descriptorWrite.dstBinding = 0;
descriptorWrite.dstArrayElement = 0;
descriptorWrite.descriptorType = VK_DESCRIPTOR_TYPE_STORAGE_IMAGE;
descriptorWrite.descriptorCount = 1;
descriptorWrite.pImageInfo = &outputImageInfo;
vkUpdateDescriptorSets(device, 1, &descriptorWrite, 0, nullptr);
}
}
void updateDescriptorSets() {
for (size_t i = 0; i < MAX_FRAMES_IN_FLIGHT; i++) {
VkDescriptorImageInfo inputImageInfo {};
inputImageInfo.sampler = textureSampler;
inputImageInfo.imageView = renderImageViews[i];
inputImageInfo.imageLayout = VK_IMAGE_LAYOUT_GENERAL;
VkWriteDescriptorSet descriptorWrite {};
descriptorWrite.sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
descriptorWrite.dstSet = descriptorSets[i];
descriptorWrite.dstBinding = 1;
descriptorWrite.dstArrayElement = 0;
descriptorWrite.descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
descriptorWrite.descriptorCount = 1;
descriptorWrite.pImageInfo = &inputImageInfo;
vkUpdateDescriptorSets(device, 1, &descriptorWrite, 0, nullptr);
}
}
void createComputeDescriptorSetLayout() {
std::array<VkDescriptorSetLayoutBinding, 2> layoutBindings {};
layoutBindings[0].binding = 0;
layoutBindings[0].descriptorCount = 1;
layoutBindings[0].descriptorType = VK_DESCRIPTOR_TYPE_STORAGE_IMAGE;
layoutBindings[0].pImmutableSamplers = nullptr;
layoutBindings[0].stageFlags = VK_SHADER_STAGE_COMPUTE_BIT;
layoutBindings[1].binding = 1;
layoutBindings[1].descriptorCount = 1;
layoutBindings[1].descriptorType = VK_DESCRIPTOR_TYPE_STORAGE_BUFFER;
layoutBindings[1].pImmutableSamplers = nullptr;
layoutBindings[1].stageFlags = VK_SHADER_STAGE_COMPUTE_BIT;
VkDescriptorSetLayoutCreateInfo layoutInfo {};
layoutInfo.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO;
layoutInfo.bindingCount = static_cast<uint32_t>(layoutBindings.size());
layoutInfo.pBindings = layoutBindings.data();
if (vkCreateDescriptorSetLayout(device, &layoutInfo, nullptr, &computeDescriptorSetLayout) != VK_SUCCESS) {
throw std::runtime_error("failed to create compute descriptor set layout!");
}
}
void createComputePipeline() {
/* Pipeline layout */
VkPipelineLayoutCreateInfo pipelineLayoutInfo {};
pipelineLayoutInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO;
pipelineLayoutInfo.setLayoutCount = 1;
pipelineLayoutInfo.pSetLayouts = &computeDescriptorSetLayout;
// Push constant
VkPushConstantRange pushConstantRange {};
pushConstantRange.offset = 0;
pushConstantRange.size = sizeof(Camera);
pushConstantRange.stageFlags = VK_SHADER_STAGE_COMPUTE_BIT;
pipelineLayoutInfo.pushConstantRangeCount = 1;
pipelineLayoutInfo.pPushConstantRanges = &pushConstantRange;
if (vkCreatePipelineLayout(device, &pipelineLayoutInfo, nullptr, &computePipelineLayout) != VK_SUCCESS) {
throw std::runtime_error("failed to create compute pipeline layout!");
}
/* Shader stage */
auto computeShaderCode = readFile("shaders/compute.spv");
VkShaderModule computeShaderModule = createShaderModule(computeShaderCode);
VkPipelineShaderStageCreateInfo computeShaderStageInfo {};
computeShaderStageInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO;
computeShaderStageInfo.stage = VK_SHADER_STAGE_COMPUTE_BIT;
computeShaderStageInfo.module = computeShaderModule;
computeShaderStageInfo.pName = "main";
/* Pipeline */
VkComputePipelineCreateInfo pipelineInfo {};
pipelineInfo.sType = VK_STRUCTURE_TYPE_COMPUTE_PIPELINE_CREATE_INFO;
pipelineInfo.layout = computePipelineLayout;
pipelineInfo.stage = computeShaderStageInfo;
if (vkCreateComputePipelines(device, VK_NULL_HANDLE, 1, &pipelineInfo, nullptr,
&computePipeline) != VK_SUCCESS) {
throw std::runtime_error("failed to create compute pipeline!");