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-rw-r--r--engine/render/vulkan/context.c217
1 files changed, 217 insertions, 0 deletions
diff --git a/engine/render/vulkan/context.c b/engine/render/vulkan/context.c
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index 0000000..1282706
--- /dev/null
+++ b/engine/render/vulkan/context.c
@@ -0,0 +1,217 @@
+/*
+ * Rune Game Engine
+ * Copyright 2024 Danny Holman <dholman@gymli.org>
+ *
+ * This software is provided 'as-is', without any express or implied
+ * warranty. In no event will the authors be held liable for any damages
+ * arising from the use of this software.
+ *
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
+ *
+ * 1. The origin of this software must not be misrepresented; you must not
+ * claim that you wrote the original software. If you use this software
+ * in a product, an acknowledgment in the product documentation would be
+ * appreciated but is not required.
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ * misrepresented as being the original software.
+ * 3. This notice may not be removed or altered from any source distribution.
+ */
+
+#include "context.h"
+#include "vkassert.h"
+#include <rune/core/logging.h>
+#include <rune/core/alloc.h>
+#include <rune/core/config.h>
+#include <stdlib.h>
+#include <string.h>
+
+VKAPI_ATTR VkBool32 VKAPI_CALL _vulkan_db_callback(
+ VkDebugUtilsMessageSeverityFlagBitsEXT message_severity,
+ VkDebugUtilsMessageTypeFlagsEXT message_types,
+ const VkDebugUtilsMessengerCallbackDataEXT *callback_data,
+ void *user_data) {
+ switch (message_severity) {
+ case VK_DEBUG_UTILS_MESSAGE_SEVERITY_ERROR_BIT_EXT:
+ log_output(LOG_ERROR, callback_data->pMessage);
+ break;
+ case VK_DEBUG_UTILS_MESSAGE_SEVERITY_WARNING_BIT_EXT:
+ log_output(LOG_WARN, callback_data->pMessage);
+ break;
+ case VK_DEBUG_UTILS_MESSAGE_SEVERITY_INFO_BIT_EXT:
+ log_output(LOG_INFO, callback_data->pMessage);
+ break;
+ case VK_DEBUG_UTILS_MESSAGE_SEVERITY_VERBOSE_BIT_EXT:
+ log_output(LOG_DEBUG, callback_data->pMessage);
+ break;
+ default:
+ break;
+ }
+ return VK_FALSE;
+}
+
+int _init_vkdebugger(vkcontext_t *context) {
+ log_output(LOG_INFO, "Initializing Vulkan debugger");
+
+ VkDebugUtilsMessengerCreateInfoEXT dbinfo;
+ dbinfo.sType = VK_STRUCTURE_TYPE_DEBUG_UTILS_MESSENGER_CREATE_INFO_EXT;
+ dbinfo.pNext = NULL;
+ dbinfo.flags = 0;
+ dbinfo.messageSeverity = VK_DEBUG_UTILS_MESSAGE_SEVERITY_ERROR_BIT_EXT |
+ VK_DEBUG_UTILS_MESSAGE_SEVERITY_WARNING_BIT_EXT |
+ VK_DEBUG_UTILS_MESSAGE_SEVERITY_INFO_BIT_EXT |
+ VK_DEBUG_UTILS_MESSAGE_SEVERITY_VERBOSE_BIT_EXT;
+ dbinfo.messageType = VK_DEBUG_UTILS_MESSAGE_TYPE_GENERAL_BIT_EXT |
+ VK_DEBUG_UTILS_MESSAGE_TYPE_PERFORMANCE_BIT_EXT |
+ VK_DEBUG_UTILS_MESSAGE_TYPE_VALIDATION_BIT_EXT;
+ dbinfo.pfnUserCallback = _vulkan_db_callback;
+ dbinfo.pUserData = NULL;
+
+ PFN_vkCreateDebugUtilsMessengerEXT func =
+ (PFN_vkCreateDebugUtilsMessengerEXT)
+ vkGetInstanceProcAddr(context->instance,
+ "vkCreateDebugUtilsMessengerEXT");
+
+ if (func == NULL) {
+ log_output(LOG_ERROR, "Failed to create Vulkan debugger");
+ return -1;
+ }
+
+ VkResult res;
+ res = func(context->instance, &dbinfo, NULL, &context->db_messenger);
+ if (res != VK_SUCCESS) {
+ char *err_str = get_vkerr_str(res);
+ log_output(LOG_ERROR, "Debug session error: %s", err_str);
+ free(err_str);
+ return -1;
+ }
+ return 0;
+}
+
+uint32_t _vertoi(const char *version) {
+ uint32_t major = 0;
+ uint32_t minor = 0;
+ uint32_t patch = 0;
+ char *version_copy = strdup(version);
+ char *token = strtok(version_copy, ".");
+ if (token != NULL)
+ major = (uint32_t)atoi(token);
+
+ token = strtok(NULL, ".");
+ if (token != NULL)
+ minor = (uint32_t)atoi(token);
+
+ token = strtok(NULL, ".");
+ if (token != NULL)
+ patch = (uint32_t)atoi(token);
+
+ free(version_copy);
+ return (major << 22) | (minor << 12) | patch;
+}
+
+vkcontext_t* create_vkcontext(vklayer_container_t *vklayers, ext_container_t *ext) {
+ vkcontext_t *ret = rune_calloc(0, sizeof(vkcontext_t));
+ ret->surface = rune_alloc(sizeof(vksurface_t));
+
+ VkApplicationInfo app_info;
+ app_info.sType = VK_STRUCTURE_TYPE_APPLICATION_INFO;
+ app_info.pNext = NULL;
+ app_info.apiVersion = VK_API_VERSION_1_2;
+ app_info.pApplicationName = rune_get_app_name();
+ const char *app_ver = rune_get_app_ver();
+ app_info.applicationVersion = _vertoi(app_ver);
+ app_info.pEngineName = "RuneEngine";
+ app_info.engineVersion = _vertoi(RUNE_VER);
+
+ VkInstanceCreateInfo cinfo;
+ cinfo.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO;
+ cinfo.pNext = NULL;
+ cinfo.flags = 0;
+ cinfo.pApplicationInfo = &app_info;
+ cinfo.enabledExtensionCount = ext->ext_count;
+ cinfo.ppEnabledExtensionNames = ext->extensions;
+ cinfo.pNext = NULL;
+
+ if (vklayers != NULL) {
+ log_output(LOG_INFO, "Validation layers enabled");
+ cinfo.enabledLayerCount = vklayers->vklayer_count;
+ cinfo.ppEnabledLayerNames = vklayers->vklayer_names;
+ } else {
+ log_output(LOG_INFO, "Validation layers disabled");
+ cinfo.enabledLayerCount = 0;
+ cinfo.ppEnabledLayerNames = NULL;
+ }
+
+ VkResult res;
+ res = vkCreateInstance(&cinfo, NULL, &ret->instance);
+ if (res != VK_SUCCESS) {
+ char *err_str = get_vkerr_str(res);
+ log_output(LOG_FATAL, "Cannot create a Vulkan instance: %s", err_str);
+ rune_abort();
+ }
+
+ if (vklayers != NULL)
+ _init_vkdebugger(ret);
+
+ return ret;
+}
+
+void destroy_vkcontext(vkcontext_t *context) {
+ log_output(LOG_DEBUG, "Closing Vulkan instance");
+ if (rune_get_vk_debug() == 1) {
+ PFN_vkDestroyDebugUtilsMessengerEXT func =
+ (PFN_vkDestroyDebugUtilsMessengerEXT)
+ vkGetInstanceProcAddr(context->instance,
+ "vkDestroyDebugUtilsMessengerEXT");
+ func(context->instance, context->db_messenger, NULL);
+ }
+ vkDestroySurfaceKHR(context->instance, context->surface->handle, NULL);
+ vkDestroyInstance(context->instance, NULL);
+ rune_free(context->surface);
+ rune_free(context);
+}
+
+vklayer_container_t* init_vklayers(ext_container_t *ext) {
+ ext->ext_count++;
+ const char** new_extensions = rune_alloc(sizeof(char*) * ext->ext_count);
+ if (new_extensions == NULL) {
+ log_output(LOG_FATAL, "Cannot allocate memory for debug extensions");
+ rune_abort();
+ }
+
+ for (uint32_t i = 0; i < ext->ext_count-1; i++)
+ new_extensions[i] = ext->extensions[i];
+ new_extensions[ext->ext_count-1] = VK_EXT_DEBUG_UTILS_EXTENSION_NAME;
+ ext->extensions = new_extensions;
+
+ uint32_t layer_count;
+ vkEnumerateInstanceLayerProperties(&layer_count, NULL);
+ VkLayerProperties layer_props[layer_count];
+ vkEnumerateInstanceLayerProperties(&layer_count, layer_props);
+
+ vklayer_container_t *ret = rune_alloc(sizeof(vklayer_container_t));
+ ret->vklayer_count = 1;
+ ret->vklayer_names = rune_alloc(sizeof(char*) * ret->vklayer_count);
+ ret->vklayer_names[0] = "VK_LAYER_KHRONOS_validation";
+
+ for (uint32_t i = 0; i < ret->vklayer_count; i++) {
+ log_output(LOG_DEBUG, "Searching for layer: %s", ret->vklayer_names[i]);
+ int found = 0;
+ for (uint32_t j = 0; j < layer_count; j++) {
+ if (strcmp(ret->vklayer_names[i], layer_props[j].layerName) == 0) {
+ found = 1;
+ break;
+ }
+ }
+ if (found == 0) {
+ log_output(LOG_WARN, "Required validation layer is missing: %s", ret->vklayer_names[i]);
+ rune_free(ret);
+ rune_free(ext->extensions);
+ return NULL;
+ }
+ }
+ log_output(LOG_INFO, "All prerequisite validation layers found");
+ rune_free(ext->extensions);
+ return ret;
+}
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