implemented vulkan instance creation

vk/instance.c

@@ -0,0 +1,106 @@
+#include "instance.h"
+#include "../core/log.h"
+#define RGFW_VULKAN
+#include "../rgfw.h"
+#include "vk.h"
+
+const char *extensions[] = {
+#ifdef PLATFORM_MACOS
+	VK_KHR_PORTABILITY_ENUMERATION_EXTENSION_NAME,
+	VK_KHR_GET_PHYSICAL_DEVICE_PROPERTIES_2_EXTENSION_NAME
+#endif
+};
+
+#ifdef DEBUG
+const char *layers[] = {
+	"VK_LAYER_KHRONOS_validation"
+};
+#define LAYER_COUNT (sizeof(layers)/sizeof(layers[0]))
+#else
+#define LAYER_COUNT 0
+const char *layers[] = {NULL};
+#endif
+
+/*
+ * Vulkan is modular by design. This means that
+ * some features that might not be always needed
+ * are not enabled by default. To enable those
+ * features (like macOS platform compatibility
+ * or windowing) extensions are needed. This
+ * function checks which extensions are required
+ * by RGFW and adds extensions required by the
+ * game itself.
+ */
+const char **vk_instance_extensions(usize *count)
+{
+	usize rgfw_extension_count = 0;
+	const char **rgfw_extensions = RGFW_getRequiredInstanceExtensions_Vulkan(&rgfw_extension_count);
+
+	usize extension_count = sizeof(extensions)/sizeof(extensions[0]);
+	*count = rgfw_extension_count + extension_count;
+	const char **instance_extensions = malloc(*count * sizeof(char *));
+
+	#ifdef DEBUG
+	log_info("Required Vulkan extensions: ");
+	#endif
+
+	for (usize i = 0; i < rgfw_extension_count; i++) {
+		#ifdef DEBUG
+		printf("%s ", rgfw_extensions[i]);
+		#endif
+		instance_extensions[i] = rgfw_extensions[i];
+	}
+
+	for (usize i = 0; i < extension_count; i++) {
+		#ifdef DEBUG
+		printf("%s ", extensions[i]);
+		#endif
+		instance_extensions[rgfw_extension_count + i] = extensions[i];
+	}
+
+	#ifdef DEBUG
+	printf("\n");
+	#endif
+
+	return instance_extensions;
+}
+
+void vk_instance_init(struct renderer_context *context)
+{
+	VkApplicationInfo application_info = {
+		.sType = VK_STRUCTURE_TYPE_APPLICATION_INFO,
+		.pApplicationName = "topaz",
+		.applicationVersion = 0,
+		.pEngineName = "topaz",
+		.engineVersion = 0,
+		.apiVersion = VK_API_VERSION_1_4
+	};
+
+	usize extension_count = 0;
+	const char **extension_names = vk_instance_extensions(&extension_count);
+
+	VkInstanceCreateInfo instance_info = {
+		.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO,
+		.pApplicationInfo = &application_info,
+		.flags = VK_INSTANCE_CREATE_ENUMERATE_PORTABILITY_BIT_KHR,
+		.enabledLayerCount = LAYER_COUNT,
+		.ppEnabledLayerNames = layers,
+		.enabledExtensionCount = extension_count,
+		.ppEnabledExtensionNames = extension_names,
+	};
+
+	VkResult result = vkCreateInstance(&instance_info, NULL, &context->instance);
+	switch(result) {
+	case VK_ERROR_INCOMPATIBLE_DRIVER:
+		fatal("Incompatible driver.\n");
+	case VK_ERROR_LAYER_NOT_PRESENT:
+		fatal("Requested vulkan layers are not present.\n");
+	case VK_SUCCESS:
+		log_info("Vulkan instance created.\n");
+		break;
+	default:
+		fatal("Can't create Vulkan instance.\n");
+	}
+
+	free(extension_names);
+}

vk/instance.h

@@ -0,0 +1,8 @@
+#ifndef INSTANCE_H
+#define INSTANCE_H
+
+#include "../rendering/renderer.h"
+
+void vk_instance_init(struct renderer_context *context);
+
+#endif

vk/platform.c

@@ -0,0 +1,41 @@
+// SPDX-License-Identifier: BSD-3-Clause
+
+#define RGFW_VULKAN
+#define RGFW_IMPLEMENTATION
+#include "../rgfw.h"
+#include <vulkan/vulkan.h>
+#include "../core/log.h"
+
+#ifdef PLATFORM_MACOS
+#include <vulkan/vulkan_macos.h>
+#include <vulkan/vulkan_metal.h>
+#endif
+
+#include "../rendering/renderer.h"
+
+/*
+ * This function is the entrypoint for the whole
+ * game. Its role is to initialize Vulkan, create
+ * the renderer and start the game loop.
+ */
+int platform_run(i32 argc, u8 **argv)
+{
+	(void) argc;
+	(void) argv;
+
+	log_info("Using Vulkan as rendering backend.\n");
+
+	RGFW_window* win = RGFW_createWindow("topaz", 0, 0, 800, 600, RGFW_windowCenter | RGFW_windowNoResize | RGFW_windowHide);
+	RGFW_window_show(win);
+	RGFW_window_setExitKey(win, RGFW_escape);
+
+	struct renderer_context *context = renderer_context_init();
+
+	while (RGFW_window_shouldClose(win) == RGFW_FALSE) {
+		RGFW_event event;
+		while (RGFW_window_checkEvent(win, &event));
+	}
+
+	RGFW_window_close(win);
+	return 0;
+}

vk/renderer.c

@@ -0,0 +1,29 @@
+// SPDX-License-Identifier: BSD-3-Clause
+#include "../rendering/renderer.h"
+#include <vulkan/vulkan.h>
+#include "instance.h"
+#include "vk.h"
+#include <stdlib.h>
+
+struct renderer_context *renderer_context_init(void)
+{
+	struct renderer_context *context = (struct renderer_context *) malloc(sizeof(struct renderer_context));
+
+	vk_instance_init(context);
+	return context;
+}
+
+struct mesh *renderer_build_chunk_mesh(void)
+{
+	return NULL;
+}
+
+void renderer_draw_mesh(struct mesh mesh)
+{
+	(void) mesh;
+}
+
+void renderer_draw_chunk(struct mesh mesh)
+{
+	(void) mesh;
+}

vk/vk.h

@@ -0,0 +1,10 @@
+#ifndef VK_H
+#define VK_H
+
+#include <vulkan/vulkan.h>
+struct renderer_context {
+	VkInstance instance;
+	VkPhysicalDevice physical_device;
+};
+
+#endif