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1 import std/tables
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2 import std/strutils
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3 import std/logging
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4 import std/os
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5
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6 include ./vkapi
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7
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8 const VULKAN_VERSION = VK_MAKE_API_VERSION(0, 1, 3, 0)
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9
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10 template checkVkResult*(call: untyped) =
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11 when defined(release):
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12 discard call
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13 else:
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14 # yes, a bit cheap, but this is only for nice debug output
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15 var callstr = astToStr(call).replace("\n", "")
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16 while callstr.find(" ") >= 0:
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17 callstr = callstr.replace(" ", " ")
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18 debug "Calling vulkan: ", callstr
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19 let value = call
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20 if value != VK_SUCCESS:
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21 error "Vulkan error: ", astToStr(call), " returned ", $value
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22 raise newException(
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23 Exception, "Vulkan error: " & astToStr(call) & " returned " & $value
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24 )
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25
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26 type SVkInstance* = object
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27 vkInstance: VkInstance
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28 debugMessenger: VkDebugUtilsMessengerEXT
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29
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30 proc `=copy`(a: var SVkInstance, b: SVkInstance) {.error.}
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31
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32 proc `=destroy`(a: SVkInstance) =
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33 if a.vkInstance.pointer != nil:
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34 if a.debugMessenger.pointer != nil:
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35 vkDestroyDebugUtilsMessengerEXT(a.vkInstance, a.debugMessenger, nil)
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36 a.vkInstance.vkDestroyInstance(nil)
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37
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38 proc debugCallback(
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39 messageSeverity: VkDebugUtilsMessageSeverityFlagBitsEXT,
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40 messageTypes: VkDebugUtilsMessageTypeFlagsEXT,
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41 pCallbackData: ptr VkDebugUtilsMessengerCallbackDataEXT,
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42 userData: pointer,
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43 ): VkBool32 {.cdecl.} =
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44 const LOG_LEVEL_MAPPING = {
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45 VK_DEBUG_UTILS_MESSAGE_SEVERITY_VERBOSE_BIT_EXT: lvlDebug,
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46 VK_DEBUG_UTILS_MESSAGE_SEVERITY_INFO_BIT_EXT: lvlInfo,
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47 VK_DEBUG_UTILS_MESSAGE_SEVERITY_WARNING_BIT_EXT: lvlWarn,
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48 VK_DEBUG_UTILS_MESSAGE_SEVERITY_ERROR_BIT_EXT: lvlError,
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49 }.toTable
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50 log LOG_LEVEL_MAPPING[messageSeverity]
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51 if messageSeverity == VK_DEBUG_UTILS_MESSAGE_SEVERITY_ERROR_BIT_EXT:
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52 # stderr.write getStackTrace()
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53 # stderr.writeLine LOG_LEVEL_MAPPING[messageSeverity], &"{toEnums messageTypes}: {pCallbackData.pMessage}"
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54 let errorMsg = $pCallbackData.pMessage & ": " & getStackTrace()
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55 raise newException(Exception, errorMsg)
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56 return VK_FALSE
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57
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58 proc svkCreateInstance*(
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59 applicationName: string,
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60 enabledLayers: openArray[string] = [],
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61 enabledExtensions: openArray[string] =
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62 if defined(release):
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63 @["VK_KHR_surface"]
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64 else:
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65 @["VK_KHR_surface", "VK_EXT_debug_utils"],
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66 engineName = "semicongine",
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67 withSwapchain = true,
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68 ): SVkInstance =
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69 putEnv("VK_LOADER_LAYERS_ENABLE", "*validation")
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70 putEnv(
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71 "VK_LAYER_ENABLES",
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72 "VALIDATION_CHECK_ENABLE_VENDOR_SPECIFIC_AMD,VALIDATION_CHECK_ENABLE_VENDOR_SPECIFIC_NVIDIA,VK_VALIDATION_FEATURE_ENABLE_SYNCHRONIZATION_VALIDATION_EXTVK_VALIDATION_FEATURE_ENABLE_GPU_ASSISTED_EXT,VK_VALIDATION_FEATURE_ENABLE_SYNCHRONIZATION_VALIDATION_EXT",
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73 )
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74 initVulkanLoader()
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75
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76 let
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77 appinfo = VkApplicationInfo(
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78 pApplicationName: applicationName,
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79 pEngineName: engineName,
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80 apiVersion: VULKAN_VERSION,
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81 )
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82 enabledLayersC = allocCStringArray(enabledLayers)
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83 enabledExtensionsC = allocCStringArray(enabledExtensions)
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84 createinfo = VkInstanceCreateInfo(
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85 pApplicationInfo: addr appinfo,
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86 enabledLayerCount: enabledLayers.len.uint32,
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87 ppEnabledLayerNames: enabledLayersC,
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88 enabledExtensionCount: enabledExtensions.len.uint32,
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89 ppEnabledExtensionNames: enabledExtensionsC,
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90 )
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91 checkVkResult vkCreateInstance(addr createinfo, nil, addr result.vkInstance)
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92
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93 enabledLayersC.deallocCStringArray()
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94 enabledExtensionsC.deallocCStringArray()
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95
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96 load_VK_VERSION_1_0(result.vkInstance)
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97 load_VK_VERSION_1_1(result.vkInstance)
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98 load_VK_VERSION_1_2(result.vkInstance)
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99 load_VK_VERSION_1_3(result.vkInstance)
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100
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101 for extension in enabledExtensions:
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102 loadExtension(result.vkInstance, extension)
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103 if withSwapchain:
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104 load_VK_KHR_swapchain(result.vkInstance)
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105
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106 when not defined(release):
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107 var debugMessengerCreateInfo = VkDebugUtilsMessengerCreateInfoEXT(
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108 messageSeverity: VkDebugUtilsMessageSeverityFlagBitsEXT.items.toSeq.toBits,
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109 messageType: VkDebugUtilsMessageTypeFlagBitsEXT.items.toSeq.toBits,
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110 pfnUserCallback: debugCallback,
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111 )
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112 checkVkResult vkCreateDebugUtilsMessengerEXT(
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113 result.vkInstance, addr debugMessengerCreateInfo, nil, addr result.debugMessenger
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114 )
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