adding D3D11 base, working on Vulkan backend

.gitignore

@@ -6,6 +6,7 @@
 !xmake.lua
 !/Includes/
 !/Sources/
+!/Tests/
 !/.github/
 *.o
 *.swp

Includes/Pulse.h

@@ -16,7 +16,7 @@ extern "C" {
 
 #include "PulseProfile.h"
 
-#define PULSE_VERSION PULSE_MAKE_VERSION(1, 0, 0)
+#define PULSE_VERSION PULSE_MAKE_VERSION(0, 0, 1)
 
 // Types
 typedef uint64_t PulseDeviceSize;
@@ -35,7 +35,9 @@ PULSE_DEFINE_NULLABLE_HANDLE(PulseImage);
 typedef enum PulseBackendBits
 {
 	PULSE_BACKEND_INVALID = PULSE_BIT(1),
-	PULSE_BACKEND_VULKAN = PULSE_BIT(2),
+	PULSE_BACKEND_ANY = PULSE_BIT(2),
+	PULSE_BACKEND_VULKAN = PULSE_BIT(3),
+	PULSE_BACKEND_D3D11 = PULSE_BIT(4),
 	// More to come
 } PulseBackendBits;
 typedef PulseFlags PulseBackendFlags;
@@ -65,13 +67,30 @@ typedef PulseFlags PulseImageUsageFlags;
 
 typedef enum PulseShaderFormatsBits
 {
-	PULSE_SHADER_FORMAT_INVALID_BIT = PULSE_BIT(1),
-	PULSE_SHADER_FORMAT_SPIRV_BIT   = PULSE_BIT(2),
+	PULSE_SHADER_FORMAT_SPIRV_BIT   = PULSE_BIT(1), // Can be used by Vulkan | D3D11 backends
+	PULSE_SHADER_FORMAT_DXBC_BIT    = PULSE_BIT(2), // Can be used by D3D11 backend only
 	// More to come
 } PulseShaderFormatsBits;
 typedef PulseFlags PulseShaderFormatsFlags;
 
 // Enums
+typedef enum PulseDebugLevel
+{
+	PULSE_NO_DEBUG,
+	PULSE_LOW_DEBUG,
+	PULSE_HIGH_DEBUG,
+	PULSE_PARANOID_DEBUG // Causes every warning to be treated as error
+} PulseDebugLevel;
+
+typedef enum PulseErrorType
+{
+	PULSE_ERROR_NONE,
+
+	PULSE_ERROR_BACKENDS_CANDIDATES_SHADER_FORMAT_MISMATCH,
+	PULSE_ERROR_INITIALIZATION_FAILED,
+	PULSE_ERROR_INVALID_HANDLE,
+} PulseErrorType;
+
 typedef enum PulseImageType
 {
 	PULSE_IMAGE_TYPE_2D,
@@ -180,7 +199,6 @@ typedef struct PulseComputePipelineCreateInfo
 	const uint8_t* code;
 	const char* entrypoint;
 	PulseShaderFormatsFlags format;
-	uint32_t num_samplers;
 	uint32_t num_readonly_storage_images;
 	uint32_t num_readonly_storage_buffers;
 	uint32_t num_readwrite_storage_images;
@@ -230,10 +248,14 @@ typedef struct PulseImageRegion
 } PulseImageRegion;
 
 // Functions
-PULSE_API PulseDevice PulseCreateDevice(PulseBackendFlags backend_candidates, PulseShaderFormatsFlags shader_formats_used);
+PULSE_API PulseDevice PulseCreateDevice(PulseBackendFlags backend_candidates, PulseShaderFormatsFlags shader_formats_used, PulseDebugLevel debug_level);
 PULSE_API void PulseDestroyDevice(PulseDevice device);
 PULSE_API PulseBackendBits PulseGetBackendInUseByDevice(PulseDevice device);
 PULSE_API bool PulseSupportsBackend(PulseBackendFlags backend_candidates, PulseShaderFormatsFlags shader_formats_used);
+PULSE_API bool PulseDeviceSupportsSahderFormats(PulseDevice device, PulseShaderFormatsFlags shader_formats_used);
+
+PULSE_API PulseErrorType PulseGetLastErrorType(); // /!\ Warning /!\ Call to this function resets the internal last error variable
+PULSE_API const char* PulseVerbaliseErrorType(PulseErrorType error);
 
 #ifdef __cplusplus
 }

Includes/PulseProfile.h

@@ -7,6 +7,8 @@
 #ifndef PULSE_PROFILE_H_
 #define PULSE_PROFILE_H_
 
+#include <stdlib.h>
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -76,6 +78,42 @@ extern "C" {
 	#define PULSE_API
 #endif
 
+#ifndef __cplusplus // if we compile in C
+	#ifdef __STDC__
+		#ifdef __STDC_VERSION__
+			#if __STDC_VERSION__ == 199409L
+				#define PULSE_C_VERSION 1994
+			#elif __STDC_VERSION__ == 199901L
+				#define PULSE_C_VERSION 1999
+			#elif __STDC_VERSION__ == 201112L
+				#define PULSE_C_VERSION 2011
+			#elif __STDC_VERSION__ == 201710L
+				#define PULSE_C_VERSION 2017
+			#elif __STDC_VERSION__ == 202311L
+				#define PULSE_C_VERSION 2023
+			#else
+				#define PULSE_C_VERSION 0
+			#endif
+		#else
+			#define PULSE_C_VERSION 0
+		#endif
+	#else
+		#define PULSE_C_VERSION 0
+	#endif
+#else
+	#define PULSE_C_VERSION 0
+#endif
+
+#if PULSE_C_VERSION >= 2023
+	#if defined(PULSE_COMPILER_GCC) || defined(PULSE_COMPILER_CLANG) // for now only GCC and Clang supports nullptr
+		#define PULSE_NULLPTR nullptr
+	#else
+		#define PULSE_NULLPTR NULL
+	#endif
+#else
+	#define PULSE_NULLPTR NULL
+#endif
+
 #define PULSE_DEFINE_NULLABLE_HANDLE(object) typedef struct object##Handler* object
 
 #if (defined(__cplusplus) && (__cplusplus >= 201103L)) || (defined(_MSVC_LANG) && (_MSVC_LANG >= 201103L))

Sources/Backends/D3D11/D3D11.c

@@ -4,7 +4,8 @@
 
 #include <Pulse.h>
 
-typedef struct PulseDeviceHandler
-{
+#ifdef PULSE_ENABLE_D3D11_BACKEND
 
-} PulseDeviceHandler;
+
+
+#endif // PULSE_ENABLE_D3D11_BACKEND

Sources/Backends/Vulkan/Vulkan.c

@@ -0,0 +1,30 @@
+// Copyright (C) 2024 kanel
+// This file is part of "Pulse"
+// For conditions of distribution and use, see copyright notice in LICENSE
+
+#include <Pulse.h>
+#include "../../PulseInternal.h"
+
+#include "Vulkan.h"
+#include "VulkanLoader.h"
+
+VulkanGlobal* VulkanGetGlobal()
+{
+	static VulkanGlobal vulkan = { 0 };
+	return &vulkan;
+}
+
+bool VulkanLoadBackend()
+{
+	if(!VulkanInitLoader())
+		return false;
+
+	return true;
+}
+
+PulseBackendLoader VulkanDriver = {
+	.PFN_LoadBackend = VulkanLoadBackend,
+	.PFN_CreateDevice = PULSE_NULLPTR,
+	.backend = PULSE_BACKEND_VULKAN,
+	.supported_shader_formats = PULSE_SHADER_FORMAT_SPIRV_BIT
+};

Sources/Backends/Vulkan/Vulkan.h

@@ -0,0 +1,32 @@
+// Copyright (C) 2024 kanel
+// This file is part of "Pulse"
+// For conditions of distribution and use, see copyright notice in LICENSE
+
+#ifdef PULSE_ENABLE_VULKAN_BACKEND
+
+#ifndef PULSE_VULKAN_H_
+#define PULSE_VULKAN_H_
+
+#include <vulkan/vulkan_core.h>
+
+#include "VulkanDevice.h"
+#include "VulkanInstance.h"
+
+typedef struct VulkanGlobal
+{
+	#define PULSE_VULKAN_GLOBAL_FUNCTION(fn) PFN_##fn fn;
+		#include "VulkanGlobalPrototypes.h"
+	#undef PULSE_VULKAN_GLOBAL_FUNCTION
+} VulkanGlobal;
+
+typedef struct VulkanContext
+{
+	VulkanInstance instance;
+	VulkanDevice device;
+} VulkanContext;
+
+VulkanGlobal* VulkanGetGlobal();
+
+#endif // PULSE_VULKAN_H_
+
+#endif // PULSE_ENABLE_VULKAN_BACKEND

Sources/Backends/Vulkan/VulkanDevice.h

@@ -0,0 +1,35 @@
+// Copyright (C) 2024 kanel
+// This file is part of "Pulse"
+// For conditions of distribution and use, see copyright notice in LICENSE
+
+#ifdef PULSE_ENABLE_VULKAN_BACKEND
+
+#ifndef PULSE_VULKAN_DEVICE_H_
+#define PULSE_VULKAN_DEVICE_H_
+
+#include <vulkan/vulkan_core.h>
+
+#define VMA_STATIC_VULKAN_FUNCTIONS 0
+#define VMA_DYNAMIC_VULKAN_FUNCTIONS 0
+#define VMA_VULKAN_VERSION 1000000
+#include <vk_mem_alloc.h>
+
+typedef struct VulkanDevice
+{
+	VkPhysicalDeviceFeatures features;
+	VkPhysicalDeviceMemoryProperties memory_properties;
+	VkPhysicalDeviceProperties properties;
+	VkPhysicalDevice physical;
+
+	VkDevice device;
+
+	VmaAllocator allocator;
+
+	#define PULSE_VULKAN_DEVICE_FUNCTION(fn) PFN_##fn fn;
+		#include "VulkanDevicePrototypes.h"
+	#undef PULSE_VULKAN_DEVICE_FUNCTION
+} VulkanDevice;
+
+#endif // PULSE_VULKAN_DEVICE_H_
+
+#endif // PULSE_ENABLE_VULKAN_BACKEND

Sources/Backends/Vulkan/VulkanDevicePrototypes.h

@@ -0,0 +1,75 @@
+// Copyright (C) 2024 kanel
+// This file is part of "Pulse"
+// For conditions of distribution and use, see copyright notice in LICENSE
+
+// No header guard
+
+#ifndef PULSE_VULKAN_DEVICE_FUNCTION
+	#error "You must define PULSE_VULKAN_DEVICE_FUNCTION before including this file"
+#endif
+
+#ifdef VK_VERSION_1_0
+	PULSE_VULKAN_DEVICE_FUNCTION(vkAllocateCommandBuffers)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkAllocateDescriptorSets)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkAllocateMemory)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkBeginCommandBuffer)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkBindBufferMemory)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkBindImageMemory)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkCmdBindDescriptorSets)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkCmdBindPipeline)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkCmdCopyBuffer)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkCmdDispatch)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkCmdDispatchIndirect)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkCmdExecuteCommands)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkCmdFillBuffer)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkCmdPipelineBarrier)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkCmdPushConstants)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkCmdUpdateBuffer)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkCreateBuffer)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkCreateBufferView)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkCreateCommandPool)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkCreateComputePipelines)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkCreateDescriptorPool)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkCreateDescriptorSetLayout)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkCreateFence)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkCreateImage)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkCreatePipelineCache)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkCreatePipelineLayout)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkCreateSemaphore)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkCreateShaderModule)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkDestroyBuffer)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkDestroyBufferView)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkDestroyCommandPool)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkDestroyDescriptorPool)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkDestroyDescriptorSetLayout)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkDestroyDevice)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkDestroyFence)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkDestroyImage)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkDestroyPipeline)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkDestroyPipelineCache)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkDestroyPipelineLayout)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkDestroySemaphore)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkDestroyShaderModule)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkDeviceWaitIdle)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkEndCommandBuffer)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkFlushMappedMemoryRanges)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkFreeCommandBuffers)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkFreeMemory)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkGetBufferMemoryRequirements)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkGetDeviceMemoryCommitment)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkGetDeviceQueue)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkGetFenceStatus)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkGetImageMemoryRequirements)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkInvalidateMappedMemoryRanges)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkMapMemory)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkMergePipelineCaches)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkQueueSubmit)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkQueueWaitIdle)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkResetCommandBuffer)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkResetCommandPool)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkResetDescriptorPool)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkResetFences)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkUnmapMemory)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkUpdateDescriptorSets)
+	PULSE_VULKAN_DEVICE_FUNCTION(vkWaitForFences)
+#endif

Sources/Backends/Vulkan/VulkanGlobalPrototypes.h

@@ -0,0 +1,16 @@
+// Copyright (C) 2024 kanel
+// This file is part of "Pulse"
+// For conditions of distribution and use, see copyright notice in LICENSE
+
+// No header guard
+
+#ifndef PULSE_VULKAN_GLOBAL_FUNCTION
+	#error "You must define PULSE_VULKAN_GLOBAL_FUNCTION before including this file"
+#endif
+
+#ifdef VK_VERSION_1_0
+	PULSE_VULKAN_GLOBAL_FUNCTION(vkCreateInstance)
+	PULSE_VULKAN_GLOBAL_FUNCTION(vkEnumerateInstanceExtensionProperties)
+	PULSE_VULKAN_GLOBAL_FUNCTION(vkEnumerateInstanceLayerProperties)
+	PULSE_VULKAN_GLOBAL_FUNCTION(vkGetInstanceProcAddr)
+#endif

Sources/Backends/Vulkan/VulkanInstance.h

@@ -0,0 +1,23 @@
+// Copyright (C) 2024 kanel
+// This file is part of "Pulse"
+// For conditions of distribution and use, see copyright notice in LICENSE
+
+#ifdef PULSE_ENABLE_VULKAN_BACKEND
+
+#ifndef PULSE_VULKAN_INSTANCE_H_
+#define PULSE_VULKAN_INSTANCE_H_
+
+#include <vulkan/vulkan_core.h>
+
+typedef struct VulkanInstance
+{
+	VkInstance instance;
+
+	#define PULSE_VULKAN_INSTANCE_FUNCTION(fn) PFN_##fn fn;
+		#include "VulkanInstancePrototypes.h"
+	#undef PULSE_VULKAN_INSTANCE_FUNCTION
+} VulkanInstance;
+
+#endif // PULSE_VULKAN_INSTANCE_H_
+
+#endif // PULSE_ENABLE_VULKAN_BACKEND

Sources/Backends/Vulkan/VulkanInstancePrototypes.h

@@ -0,0 +1,23 @@
+// Copyright (C) 2024 kanel
+// This file is part of "Pulse"
+// For conditions of distribution and use, see copyright notice in LICENSE
+
+// No header guard
+
+#ifndef PULSE_VULKAN_INSTANCE_FUNCTION
+	#error "You must define PULSE_VULKAN_INSTANCE_FUNCTION before including this file"
+#endif
+
+#ifdef VK_VERSION_1_0
+	PULSE_VULKAN_INSTANCE_FUNCTION(vkCreateDevice)
+	PULSE_VULKAN_INSTANCE_FUNCTION(vkDestroyInstance)
+	PULSE_VULKAN_INSTANCE_FUNCTION(vkEnumerateDeviceExtensionProperties)
+	PULSE_VULKAN_INSTANCE_FUNCTION(vkEnumeratePhysicalDevices)
+	PULSE_VULKAN_INSTANCE_FUNCTION(vkGetDeviceProcAddr)
+	PULSE_VULKAN_INSTANCE_FUNCTION(vkGetPhysicalDeviceFeatures)
+	PULSE_VULKAN_INSTANCE_FUNCTION(vkGetPhysicalDeviceFormatProperties)
+	PULSE_VULKAN_INSTANCE_FUNCTION(vkGetPhysicalDeviceImageFormatProperties)
+	PULSE_VULKAN_INSTANCE_FUNCTION(vkGetPhysicalDeviceMemoryProperties)
+	PULSE_VULKAN_INSTANCE_FUNCTION(vkGetPhysicalDeviceProperties)
+	PULSE_VULKAN_INSTANCE_FUNCTION(vkGetPhysicalDeviceQueueFamilyProperties)
+#endif

Sources/Backends/Vulkan/VulkanLoader.c

@@ -0,0 +1,169 @@
+// Copyright (C) 2024 kanel
+// This file is part of "Pulse"
+// For conditions of distribution and use, see copyright notice in LICENSE
+
+#include <vulkan/vulkan_core.h>
+
+#include <Pulse.h>
+#include "../../PulseInternal.h"
+
+#include "Vulkan.h"
+#include "VulkanDevice.h"
+#include "VulkanInstance.h"
+
+#ifdef PULSE_PLAT_MACOS
+	#include <stdlib.h> // getenv
+#endif
+
+#ifdef PULSE_PLAT_WINDOWS
+	typedef const char* LPCSTR;
+	typedef struct HINSTANCE__* HINSTANCE;
+	typedef HINSTANCE HMODULE;
+	#if defined(_MINWINDEF_)
+		/* minwindef.h defines FARPROC, and attempting to redefine it may conflict with -Wstrict-prototypes */
+	#elif defined(_WIN64)
+		typedef __int64 (__stdcall* FARPROC)(void);
+	#else
+		typedef int (__stdcall* FARPROC)(void);
+	#endif
+#endif
+
+#ifdef PULSE_PLAT_WINDOWS
+	__declspec(dllimport) HMODULE __stdcall LoadLibraryA(LPCSTR);
+	__declspec(dllimport) FARPROC __stdcall GetProcAddress(HMODULE, LPCSTR);
+	__declspec(dllimport) int __stdcall FreeLibrary(HMODULE);
+	typedef HMODULE LibModule;
+#else
+	#include <dlfcn.h>
+	typedef void* LibModule;
+#endif
+
+static LibModule vulkan_lib_module = PULSE_NULLPTR;
+
+static void VulkanLoadGlobalFunctions(void* context, PFN_vkVoidFunction (*load)(void*, const char*));
+static void VulkanLoadInstanceFunctions(VulkanInstance* instance, PFN_vkVoidFunction (*load)(void*, const char*));
+static void VulkanLoadDeviceFunctions(VulkanInstance* instance, VulkanDevice* device, PFN_vkVoidFunction (*load)(VulkanInstance*, void*, const char*));
+
+static inline PFN_vkVoidFunction vkGetInstanceProcAddrStub(void* context, const char* name)
+{
+	PFN_vkVoidFunction fn = VulkanGetGlobal()->vkGetInstanceProcAddr((VkInstance)context, name);
+	if(!fn)
+		PulseSetInternalError(PULSE_ERROR_INITIALIZATION_FAILED);
+	return fn;
+}
+
+static inline PFN_vkVoidFunction vkGetDeviceProcAddrStub(VulkanInstance* instance, void* context, const char* name)
+{
+	PFN_vkVoidFunction fn = instance->vkGetDeviceProcAddr((VkDevice)context, name);
+	if(!fn)
+		PulseSetInternalError(PULSE_ERROR_INITIALIZATION_FAILED);
+	return fn;
+}
+
+static inline LibModule LoadLibrary(const char* libname)
+{
+	#ifdef PULSE_PLAT_WINDOWS
+		return LoadLibraryA(libname);
+	#else
+		return dlopen(libname, RTLD_NOW | RTLD_LOCAL);
+	#endif
+}
+
+static inline void* GetSymbol(LibModule module, const char* name)
+{
+	#ifdef PULSE_PLAT_WINDOWS
+		return (void*)(void(*)(void))GetProcAddress(module, name);
+	#else
+		return dlsym(module, name);
+	#endif
+}
+
+static inline void UnloadLibrary(LibModule lib)
+{
+	#ifdef PULSE_PLAT_WINDOWS
+		FreeLibrary(lib);
+	#else
+		dlclose(lib);
+	#endif
+}
+
+bool VulkanInitLoader()
+{
+	#if defined(PULSE_PLAT_WINDOWS)
+		const char* libnames[] = {
+			"vulkan-1.dll"
+		};
+	#elif defined(PULSE_PLAT_MACOS)
+		const char* libnames[] = {
+			"libvulkan.dylib",
+			"libvulkan.1.dylib",
+			"libMoltenVK.dylib",
+			"vulkan.framework/vulkan",
+			"MoltenVK.framework/MoltenVK",
+			"/usr/local/lib/libvulkan.dylib",
+		};
+	#else
+		const char* libnames[] = {
+			"libvulkan.so.1",
+			"libvulkan.so"
+		};
+	#endif
+
+	for(size_t i = 0; i < sizeof(libnames) / sizeof(const char*); i++)
+	{
+		vulkan_lib_module = LoadLibrary(libnames[i]);
+		if(vulkan_lib_module)
+		{
+			VulkanGetGlobal()->vkGetInstanceProcAddr = (PFN_vkGetInstanceProcAddr)GetSymbol(vulkan_lib_module, "vkGetInstanceProcAddr");
+			if(VulkanGetGlobal()->vkGetInstanceProcAddr == PULSE_NULLPTR)
+			{
+				UnloadLibrary(vulkan_lib_module);
+				vulkan_lib_module = PULSE_NULLPTR;
+			}
+		}
+	}
+	if(!vulkan_lib_module)
+	{
+		PulseSetInternalError(PULSE_ERROR_INITIALIZATION_FAILED);
+		return false;
+	}
+	VulkanLoadGlobalFunctions(PULSE_NULLPTR, vkGetInstanceProcAddrStub);
+	return true;
+}
+
+void VulkanLoadInstance(VulkanInstance* instance)
+{
+	VulkanLoadInstanceFunctions(instance, vkGetInstanceProcAddrStub);
+}
+
+void VulkanLoadDevice(VulkanInstance* instance, VulkanDevice* device)
+{
+	VulkanLoadDeviceFunctions(instance, device, vkGetDeviceProcAddrStub);
+}
+
+void VulkanLoaderShutdown()
+{
+	UnloadLibrary(vulkan_lib_module);
+	vulkan_lib_module = PULSE_NULLPTR;
+}
+
+static void VulkanLoadGlobalFunctions(void* context, PFN_vkVoidFunction (*load)(void*, const char*))
+{
+	#define PULSE_VULKAN_GLOBAL_FUNCTION(func) VulkanGetGlobal()->func = (PFN_##func)load(context, #func);
+		#include "VulkanGlobalPrototypes.h"
+	#undef PULSE_VULKAN_GLOBAL_FUNCTION
+}
+
+static void VulkanLoadInstanceFunctions(VulkanInstance* instance, PFN_vkVoidFunction (*load)(void*, const char*))
+{
+	#define PULSE_VULKAN_INSTANCE_FUNCTION(func) instance->func = (PFN_##func)load(instance->instance, #func);
+		#include "VulkanInstancePrototypes.h"
+	#undef PULSE_VULKAN_INSTANCE_FUNCTION
+}
+
+static void VulkanLoadDeviceFunctions(VulkanInstance* instance, VulkanDevice* device, PFN_vkVoidFunction (*load)(VulkanInstance*, void*, const char*))
+{
+	#define PULSE_VULKAN_DEVICE_FUNCTION(func) device->func = (PFN_##func)load(instance, device->device, #func);
+		#include "VulkanDevicePrototypes.h"
+	#undef PULSE_VULKAN_DEVICE_FUNCTION
+}

Sources/Backends/Vulkan/VulkanLoader.h

@@ -0,0 +1,22 @@
+// Copyright (C) 2024 kanel
+// This file is part of "Pulse"
+// For conditions of distribution and use, see copyright notice in LICENSE
+
+#ifdef PULSE_ENABLE_VULKAN_BACKEND
+
+#ifndef PULSE_VULKAN_LOADER_H_
+#define PULSE_VULKAN_LOADER_H_
+
+#include <stdbool.h>
+
+typedef struct VulkanInstance VulkanInstance;
+typedef struct VulkanDevice VulkanDevice;
+
+bool VulkanInitLoader();
+bool VulkanLoadInstance(VulkanInstance* instance);
+bool VulkanLoadDevice(VulkanInstance* instance, VulkanDevice* device);
+void VulkanLoaderShutdown();
+
+#endif // PULSE_VULKAN_LOADER_H_
+
+#endif // PULSE_ENABLE_VULKAN_BACKEND

Sources/Backends/Vulkan/VulkanMemoryAllocatorImplementation.cpp

@@ -2,5 +2,5 @@
 // This file is part of "Pulse"
 // For conditions of distribution and use, see copyright notice in LICENSE
 
-#include <Pulse.h>
-
+#define VMA_IMPLEMENTATION
+#include <vk_mem_alloc.h>

Sources/PulseDevice.c

@@ -3,19 +3,122 @@
 // For conditions of distribution and use, see copyright notice in LICENSE
 
 #include <Pulse.h>
+#include "PulseInternal.h"
 
-PULSE_API PulseDevice PulseCreateDevice(PulseBackendFlags backend_candidates, PulseShaderFormatsFlags shader_formats_used)
+#define PULSE_CHECK_HANDLE_RETVAL(handle, retval) \
+	do { \
+		if(handle == PULSE_NULL_HANDLE) \
+		{ \
+			PulseSetInternalError(PULSE_ERROR_INVALID_HANDLE); \
+			return retval; \
+		} \
+	} while(0); \
+
+#define PULSE_CHECK_HANDLE(handle) PULSE_CHECK_HANDLE_RETVAL(handle, )
+
+// Ordered by default preference
+static const PulseBackendLoader* backends[] = {
+	#ifdef PULSE_ENABLE_VULKAN_BACKEND
+		&VulkanDriver,
+	#endif
+	#ifdef PULSE_ENABLE_D3D11_BACKEND
+		&D3D11Driver,
+	#endif
+	PULSE_NULLPTR
+};
+
+static PulseErrorType last_error = PULSE_ERROR_NONE;
+
+void PulseSetInternalError(PulseErrorType error)
 {
+	last_error = error;
+}
+
+static const PulseBackendLoader* PulseSelectBackend(PulseBackendFlags backend_candidates, PulseShaderFormatsFlags shader_formats_used)
+{
+	if((backend_candidates & PULSE_BACKEND_INVALID) != 0)
+	{
+		PulseSetInternalError(PULSE_ERROR_INITIALIZATION_FAILED);
+		return PULSE_NULLPTR;
+	}
+	for(int i = 0; backends[i] != PULSE_NULLPTR; i++)
+	{
+		if(backend_candidates != PULSE_BACKEND_ANY && (backend_candidates & backends[i]->backend) == 0)
+			continue;
+		if((shader_formats_used & backends[i]->supported_shader_formats) == 0)
+		{
+			PulseSetInternalError(PULSE_ERROR_BACKENDS_CANDIDATES_SHADER_FORMAT_MISMATCH);
+			return PULSE_NULLPTR;
+		}
+		if(backends[i]->PFN_LoadBackend())
+			return backends[i];
+	}
+	PulseSetInternalError(PULSE_ERROR_INITIALIZATION_FAILED);
+	return PULSE_NULLPTR;
+}
+
+PULSE_API PulseDevice PulseCreateDevice(PulseBackendFlags backend_candidates, PulseShaderFormatsFlags shader_formats_used, PulseDebugLevel debug_level)
+{
+	const PulseBackendLoader* backend = PulseSelectBackend(backend_candidates, shader_formats_used);
+	if(backend == PULSE_NULLPTR) // Error code already set by PulseSelectBackend
+		return PULSE_NULL_HANDLE;
+
+	PulseDevice device = backend->PFN_CreateDevice(debug_level);
+	if(device == PULSE_NULL_HANDLE)
+		PulseSetInternalError(PULSE_ERROR_INITIALIZATION_FAILED);
+	return device;
 }
 
 PULSE_API void PulseDestroyDevice(PulseDevice device)
 {
+	PULSE_CHECK_HANDLE(device);
+	device->PFN_DestroyDevice(device);
 }
 
 PULSE_API PulseBackendBits PulseGetBackendInUseByDevice(PulseDevice device)
 {
+	PULSE_CHECK_HANDLE_RETVAL(device, PULSE_BACKEND_INVALID);
+	return device->backend;
 }
 
 PULSE_API bool PulseSupportsBackend(PulseBackendFlags backend_candidates, PulseShaderFormatsFlags shader_formats_used)
 {
+	if((backend_candidates & PULSE_BACKEND_INVALID) != 0)
+		return false;
+	if((backend_candidates & PULSE_BACKEND_ANY) != 0)
+		return true;
+	for(int i = 0; backends[i] != PULSE_NULLPTR; i++)
+	{
+		if((backend_candidates & backends[i]->backend) == 0)
+			continue;
+		if((shader_formats_used & backends[i]->supported_shader_formats) != 0)
+			return true;
+	}
+	return false;
+}
+
+PULSE_API bool PulseDeviceSupportsSahderFormats(PulseDevice device, PulseShaderFormatsFlags shader_formats_used)
+{
+	PULSE_CHECK_HANDLE_RETVAL(device, false);
+	return (device->supported_shader_formats & shader_formats_used) != 0;
+}
+
+PULSE_API PulseErrorType PulseGetLastErrorType()
+{
+	PulseErrorType error = last_error;
+	last_error = PULSE_ERROR_NONE;
+	return error;
+}
+
+PULSE_API const char* PulseVerbaliseErrorType(PulseErrorType error)
+{
+	switch(error)
+	{
+		case PULSE_ERROR_NONE:                                       return "no error";
+		case PULSE_ERROR_BACKENDS_CANDIDATES_SHADER_FORMAT_MISMATCH: return "no backend candidates support the required shader formats";
+		case PULSE_ERROR_INITIALIZATION_FAILED:                      return "initialization of an object could not be completed for implementation-specific reasons";
+
+		default: return "invalid error type";
+	};
+	return PULSE_NULLPTR; // To avoid warnings, should be unreachable
 }

Sources/PulseInternal.h

@@ -0,0 +1,58 @@
+// Copyright (C) 2024 kanel
+// This file is part of "Pulse"
+// For conditions of distribution and use, see copyright notice in LICENSE
+
+#ifndef PULSE_INTERNAL_H_
+#define PULSE_INTERNAL_H_
+
+#include <Pulse.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef bool (*PulseLoadBackendPFN)(void);
+typedef PulseDevice (*PulseCreateDevicePFN)(PulseDebugLevel);
+
+typedef void (*PulseDestroyDevicePFN)(PulseDevice);
+
+typedef struct PulseDeviceHandler
+{
+	// PFNs
+	PulseDestroyDevicePFN PFN_DestroyDevice;
+
+	// Attributes
+	PulseBackendFlags backend;
+	PulseShaderFormatsFlags supported_shader_formats;
+	PulseDebugLevel debug_level;
+} PulseDeviceHandler;
+
+typedef struct PulseBackendLoader
+{
+	// PFNs
+	PulseLoadBackendPFN PFN_LoadBackend;
+	PulseCreateDevicePFN PFN_CreateDevice;
+
+	// Attributes
+	PulseBackendFlags backend;
+	PulseShaderFormatsFlags supported_shader_formats;
+} PulseBackendLoader;
+
+void PulseSetInternalError(PulseErrorType error);
+
+#define PULSE_LOAD_DRIVER_DEVICE_FUNCTION(fn, _namespace) device->PFN_##fn = _namespace##fn;
+#define PULSE_LOAD_DRIVER_DEVICE(_namespace) \
+	PULSE_LOAD_DRIVER_DEVICE_FUNCTION(DestroyDevice, _namespace) \
+
+#ifdef PULSE_ENABLE_VULKAN_BACKEND
+	extern PulseBackendLoader VulkanDriver;
+#endif // PULSE_ENABLE_VULKAN_BACKEND
+#ifdef PULSE_ENABLE_D3D11_BACKEND
+	extern PulseBackendLoader D3D11Driver;
+#endif // PULSE_ENABLE_D3D11_BACKEND
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // PULSE_INTERNAL_H_

Tests/LoadingPulse/main.c

@@ -0,0 +1,15 @@
+#include <Pulse.h>
+
+#include <stdio.h>
+
+int main(void)
+{
+	PulseDevice device = PulseCreateDevice(PULSE_BACKEND_ANY, PULSE_SHADER_FORMAT_SPIRV_BIT, PULSE_NO_DEBUG);
+	if(device == PULSE_NULL_HANDLE)
+	{
+		fprintf(stderr, "Error while loading Pulse: %s", PulseVerbaliseErrorType(PulseGetLastErrorType()));
+		return 1;
+	}
+	PulseDestroyDevice(device);
+	return 0;
+}

Tests/LoadingPulse/xmake.lua

@@ -0,0 +1,8 @@
+target("LoadingPulse")
+	add_deps("pulse_gpu")
+	if is_plat("linux") then
+		set_extension(".x86_64")
+	end
+	add_files("main.c")
+	set_targetdir("build/")
+target_end()

Tests/xmake.lua

@@ -0,0 +1,6 @@
+option("tests", { description = "Build tests", default = true })
+
+if has_config("tests") then
+	set_group("Tests")
+	includes("*/xmake.lua")
+end

xmake.lua

@@ -2,6 +2,23 @@
 -- This file is part of "Pulse"
 -- For conditions of distribution and use, see copyright notice in LICENSE
 
+local backends = {
+	Vulkan = {
+		option = "vulkan",
+		default = true,
+		has_cpp_files = true,
+		packages = { "vulkan-headers", "vulkan-memory-allocator" },
+		custom = function()
+			add_defines("VK_NO_PROTOTYPES")
+		end
+	},
+	D3D11 = {
+		option = "d3d11",
+		default = is_plat("windows", "mingw"),
+		has_cpp_files = false,
+	}
+}
+
 local sanitizers = {
 	asan = "address",
 	lsan = "leak",
@@ -15,10 +32,18 @@ for opt, policy in table.orderpairs(sanitizers) do
 	end
 end
 
+for name, module in table.orderpairs(backends) do
+	if module.option then
+		option(module.option, { description = "Enables the " .. name .. " backend", default = module.default })
+	end
+end
+
 add_rules("mode.debug", "mode.release")
 
 add_includedirs("Includes")
 set_languages("c99", "cxx20")
+set_encodings("utf-8")
+set_warnings("allextra")
 
 set_objectdir("build/Objs/$(os)_$(arch)")
 set_targetdir("build/Bin/$(os)_$(arch)")
@@ -27,17 +52,54 @@ set_dependir("build/.deps")
 
 set_optimize("fastest")
 
+for name, module in pairs(backends) do
+	if has_config(module.option) then
+		if module.packages then
+			add_requires(table.unpack(module.packages))
+		end
+	end
+end
+
 target("pulse_gpu")
 	set_kind("$(kind)")
 	add_defines("PULSE_BUILD")
 	add_headerfiles("Includes/*.hpp)")
-	add_headerfiles("Sources/**.h", { prefixdir = "private", install = false })
-	add_headerfiles("Sources/**.inl", { prefixdir = "private", install = false })
-	add_files("Sources/**.c")
-	add_files("Sources/**.cpp")
+	add_headerfiles("Sources/*.h", { prefixdir = "private", install = false })
+	add_headerfiles("Sources/*.inl", { prefixdir = "private", install = false })
+	
+	add_files("Sources/*.c")
+
+	for name, module in pairs(backends) do
+		if not has_config(module.option) then
+			goto continue
+		end
+
+		if module.packages then
+			add_packages(table.unpack(module.packages))
+		end
+
+		add_defines("PULSE_ENABLE_" .. name:upper() .. "_BACKEND")
+
+		add_headerfiles("Sources/Backends/" .. name .. "/**.h", { prefixdir = "private", install = false })
+		add_headerfiles("Sources/Backends/" .. name .. "/*.inl", { prefixdir = "private", install = false })
+
+		add_files("Sources/Backends/" .. name .. "/**.c")
+		if module.has_cpp_files then
+			add_files("Sources/Backends/" .. name .. "/**.cpp")
+		end
+
+		if module.custom then
+			module.custom()
+		end
+
+		::continue::
+	end
+
 	on_load(function(target)
 		if target:kind() == "static" then
 			target:add("defines", "PULSE_STATIC", { public = true })
 		end
 	end)
 target_end()
+
+includes("Tests/*.lua")