Mercurial > games > semicongine

annotate src/vulkan_helpers.nim @ 479:16842d15319a

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add: basic vertex buffer functionality
author Sam <sam@basx.dev>
date Thu, 05 Jan 2023 01:16:48 +0700
parents 871ee602bf95
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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diff changeset
1 import std/tables
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2 import std/strutils
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3 import std/strformat
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4 import std/logging
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5 import std/macros
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6
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7 import ./vulkan
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8 import ./window
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9
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10
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11 const ENABLEVULKANVALIDATIONLAYERS* = not defined(release)
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12
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13
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14 template checkVkResult*(call: untyped) =
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15 when defined(release):
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16 discard call
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17 else:
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18 # yes, a bit cheap, but this is only for nice debug output
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19 var callstr = astToStr(call).replace("\n", "")
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20 while callstr.find(" ") >= 0:
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21 callstr = callstr.replace(" ", " ")
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22 debug "CALLING vulkan: ", callstr
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23 let value = call
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24 if value != VK_SUCCESS:
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25 error "Vulkan error: ", astToStr(call), " returned ", $value
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26 raise newException(Exception, "Vulkan error: " & astToStr(call) & " returned " & $value)
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27
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28 func addrOrNil[T](obj: var openArray[T]): ptr T =
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29 if obj.len > 0: addr(obj[0]) else: nil
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31 func VK_MAKE_API_VERSION*(variant: uint32, major: uint32, minor: uint32, patch: uint32): uint32 {.compileTime.} =
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32 (variant shl 29) or (major shl 22) or (minor shl 12) or patch
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33
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35 func filterForSurfaceFormat*(formats: seq[VkSurfaceFormatKHR]): seq[VkSurfaceFormatKHR] =
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36 for format in formats:
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37 if format.format == VK_FORMAT_B8G8R8A8_SRGB and format.colorSpace == VK_COLOR_SPACE_SRGB_NONLINEAR_KHR:
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38 result.add(format)
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39
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40 func getSuitableSurfaceFormat*(formats: seq[VkSurfaceFormatKHR]): VkSurfaceFormatKHR =
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41 let usableSurfaceFormats = filterForSurfaceFormat(formats)
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42 if len(usableSurfaceFormats) == 0:
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43 raise newException(Exception, "No suitable surface formats found")
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44 return usableSurfaceFormats[0]
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45
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46
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47 func cleanString*(str: openArray[char]): string =
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48 for i in 0 ..< len(str):
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49 if str[i] == char(0):
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50 result = join(str[0 ..< i])
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51 break
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52
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53 proc getInstanceExtensions*(): seq[string] =
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54 var extensionCount: uint32
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55 checkVkResult vkEnumerateInstanceExtensionProperties(nil, addr(extensionCount), nil)
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56 var extensions = newSeq[VkExtensionProperties](extensionCount)
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57 checkVkResult vkEnumerateInstanceExtensionProperties(nil, addr(extensionCount), addrOrNil(extensions))
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58
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59 for extension in extensions:
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60 result.add(cleanString(extension.extensionName))
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61
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62
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63 proc getDeviceExtensions*(device: VkPhysicalDevice): seq[string] =
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64 var extensionCount: uint32
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65 checkVkResult vkEnumerateDeviceExtensionProperties(device, nil, addr(extensionCount), nil)
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66 var extensions = newSeq[VkExtensionProperties](extensionCount)
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67 checkVkResult vkEnumerateDeviceExtensionProperties(device, nil, addr(extensionCount), addrOrNil(extensions))
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68
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69 for extension in extensions:
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70 result.add(cleanString(extension.extensionName))
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71
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72
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73 proc getValidationLayers*(): seq[string] =
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74 var n_layers: uint32
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75 checkVkResult vkEnumerateInstanceLayerProperties(addr(n_layers), nil)
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76 var layers = newSeq[VkLayerProperties](n_layers)
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77 checkVkResult vkEnumerateInstanceLayerProperties(addr(n_layers), addrOrNil(layers))
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78
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79 for layer in layers:
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80 result.add(cleanString(layer.layerName))
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81
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82
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83 proc getVulkanPhysicalDevices*(instance: VkInstance): seq[VkPhysicalDevice] =
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84 var n_devices: uint32
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85 checkVkResult vkEnumeratePhysicalDevices(instance, addr(n_devices), nil)
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86 result = newSeq[VkPhysicalDevice](n_devices)
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87 checkVkResult vkEnumeratePhysicalDevices(instance, addr(n_devices), addrOrNil(result))
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88
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89
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90 proc getQueueFamilies*(device: VkPhysicalDevice): seq[VkQueueFamilyProperties] =
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91 var n_queuefamilies: uint32
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92 vkGetPhysicalDeviceQueueFamilyProperties(device, addr(n_queuefamilies), nil)
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93 result = newSeq[VkQueueFamilyProperties](n_queuefamilies)
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94 vkGetPhysicalDeviceQueueFamilyProperties(device, addr(n_queuefamilies), addrOrNil(result))
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95
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96
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97 proc getDeviceSurfaceFormats*(device: VkPhysicalDevice, surface: VkSurfaceKHR): seq[VkSurfaceFormatKHR] =
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98 var n_formats: uint32
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99 checkVkResult vkGetPhysicalDeviceSurfaceFormatsKHR(device, surface, addr(n_formats), nil);
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100 result = newSeq[VkSurfaceFormatKHR](n_formats)
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101 checkVkResult vkGetPhysicalDeviceSurfaceFormatsKHR(device, surface, addr(n_formats), addrOrNil(result))
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102
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103
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104 proc getDeviceSurfacePresentModes*(device: VkPhysicalDevice, surface: VkSurfaceKHR): seq[VkPresentModeKHR] =
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105 var n_modes: uint32
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106 checkVkResult vkGetPhysicalDeviceSurfacePresentModesKHR(device, surface, addr(n_modes), nil);
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107 result = newSeq[VkPresentModeKHR](n_modes)
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108 checkVkResult vkGetPhysicalDeviceSurfacePresentModesKHR(device, surface, addr(n_modes), addrOrNil(result))
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109
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110
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111 proc getSwapChainImages*(device: VkDevice, swapChain: VkSwapchainKHR): seq[VkImage] =
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112 var n_images: uint32
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113 checkVkResult vkGetSwapchainImagesKHR(device, swapChain, addr(n_images), nil);
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114 result = newSeq[VkImage](n_images)
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115 checkVkResult vkGetSwapchainImagesKHR(device, swapChain, addr(n_images), addrOrNil(result));
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116
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117
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118 func getPresentMode*(modes: seq[VkPresentModeKHR]): VkPresentModeKHR =
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119 let preferredModes = [
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120 VK_PRESENT_MODE_MAILBOX_KHR, # triple buffering
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121 VK_PRESENT_MODE_FIFO_RELAXED_KHR, # double duffering
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122 VK_PRESENT_MODE_FIFO_KHR, # double duffering
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123 VK_PRESENT_MODE_IMMEDIATE_KHR, # single buffering
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124 ]
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125 for preferredMode in preferredModes:
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126 for mode in modes:
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127 if preferredMode == mode:
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128 return mode
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129 # should never be reached, but seems to be garuanteed by vulkan specs to always be available
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130 return VK_PRESENT_MODE_FIFO_KHR
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131
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132
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133 proc createVulkanInstance*(vulkanVersion: uint32): VkInstance =
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134
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135 var requiredExtensions = @["VK_KHR_surface".cstring]
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136 when defined(linux):
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137 requiredExtensions.add("VK_KHR_xlib_surface".cstring)
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138 when defined(windows):
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139 requiredExtensions.add("VK_KHR_win32_surface".cstring)
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140 when ENABLEVULKANVALIDATIONLAYERS:
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141 requiredExtensions.add("VK_EXT_debug_utils".cstring)
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142
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143 let availableExtensions = getInstanceExtensions()
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144 for extension in requiredExtensions:
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145 assert $extension in availableExtensions, $extension
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146
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147 let availableLayers = getValidationLayers()
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148 var usableLayers = newSeq[cstring]()
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149
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150 when ENABLEVULKANVALIDATIONLAYERS:
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151 const desiredLayers = ["VK_LAYER_KHRONOS_validation".cstring, "VK_LAYER_MESA_overlay".cstring]
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152 for layer in desiredLayers:
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153 if $layer in availableLayers:
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154 usableLayers.add(layer)
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155
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156 echo "Available validation layers: ", availableLayers
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157 echo "Using validation layers: ", usableLayers
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158 echo "Available extensions: ", availableExtensions
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159 echo "Using extensions: ", requiredExtensions
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160
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161 var appinfo = VkApplicationInfo(
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162 sType: VK_STRUCTURE_TYPE_APPLICATION_INFO,
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163 pApplicationName: "Hello Triangle",
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164 pEngineName: "Custom engine",
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165 apiVersion: vulkanVersion,
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166 )
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167 var createinfo = VkInstanceCreateInfo(
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168 sType: VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO,
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169 pApplicationInfo: addr(appinfo),
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170 enabledLayerCount: usableLayers.len.uint32,
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171 ppEnabledLayerNames: cast[ptr UncheckedArray[cstring]](addrOrNil(usableLayers)),
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172 enabledExtensionCount: requiredExtensions.len.uint32,
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173 ppEnabledExtensionNames: cast[ptr UncheckedArray[cstring]](addr(requiredExtensions[0]))
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174 )
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175 checkVkResult vkCreateInstance(addr(createinfo), nil, addr(result))
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176
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177 loadVK_KHR_surface()
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178 when defined(linux):
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179 loadVK_KHR_xlib_surface()
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180 when defined(windows):
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181 loadVK_KHR_win32_surface()
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182 loadVK_KHR_swapchain()
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183 when ENABLEVULKANVALIDATIONLAYERS:
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184 loadVK_EXT_debug_utils(result)
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185
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186
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187 proc getVulcanDevice*(
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188 physicalDevice: var VkPhysicalDevice,
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189 features: var VkPhysicalDeviceFeatures,
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190 graphicsQueueFamily: uint32,
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191 presentationQueueFamily: uint32,
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192 ): (VkDevice, VkQueue, VkQueue) =
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193 # setup queue and device
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194 # TODO: need check this, possibly wrong logic, see Vulkan tutorial
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195 var priority = 1.0'f32
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196 var queueCreateInfo = [
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197 VkDeviceQueueCreateInfo(
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198 sType: VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO,
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199 queueFamilyIndex: graphicsQueueFamily,
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200 queueCount: 1,
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201 pQueuePriorities: addr(priority),
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202 ),
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203 ]
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204
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205 var requiredExtensions = ["VK_KHR_swapchain".cstring]
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206 var deviceCreateInfo = VkDeviceCreateInfo(
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207 sType: VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO,
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208 queueCreateInfoCount: uint32(queueCreateInfo.len),
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209 pQueueCreateInfos: addrOrNil(queueCreateInfo),
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210 pEnabledFeatures: addr(features),
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211 enabledExtensionCount: requiredExtensions.len.uint32,
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212 ppEnabledExtensionNames: cast[ptr UncheckedArray[cstring]](addr(requiredExtensions))
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213 )
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214 checkVkResult vkCreateDevice(physicalDevice, addr(deviceCreateInfo), nil, addr(result[0]))
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215 vkGetDeviceQueue(result[0], graphicsQueueFamily, 0'u32, addr(result[1]));
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216 vkGetDeviceQueue(result[0], presentationQueueFamily, 0'u32, addr(result[2]));
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217
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218 proc debugCallback*(
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219 messageSeverity: VkDebugUtilsMessageSeverityFlagBitsEXT,
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220 messageTypes: VkDebugUtilsMessageTypeFlagsEXT,
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221 pCallbackData: VkDebugUtilsMessengerCallbackDataEXT,
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222 userData: pointer
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223 ): VkBool32 {.cdecl.} =
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224 echo &"{messageSeverity}: {VkDebugUtilsMessageTypeFlagBitsEXT(messageTypes)}: {pCallbackData.pMessage}"
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225 return VK_FALSE
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226
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227 proc getSurfaceCapabilities*(device: VkPhysicalDevice, surface: VkSurfaceKHR): VkSurfaceCapabilitiesKHR =
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228 checkVkResult device.vkGetPhysicalDeviceSurfaceCapabilitiesKHR(surface, addr(result))
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229
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230 when defined(linux):
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231 proc createVulkanSurface*(instance: VkInstance, window: NativeWindow): VkSurfaceKHR =
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232 var surfaceCreateInfo = VkXlibSurfaceCreateInfoKHR(
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233 sType: VK_STRUCTURE_TYPE_XLIB_SURFACE_CREATE_INFO_KHR,
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234 dpy: window.display,
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235 window: window.window,
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236 )
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237 checkVkResult vkCreateXlibSurfaceKHR(instance, addr(surfaceCreateInfo), nil, addr(result))
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238 when defined(windows):
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239 proc createVulkanSurface*(instance: VkInstance, window: NativeWindow): VkSurfaceKHR =
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240 var surfaceCreateInfo = VkWin32SurfaceCreateInfoKHR(
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241 sType: VK_STRUCTURE_TYPE_WIN32_SURFACE_CREATE_INFO_KHR,
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242 hinstance: window.hinstance,
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243 hwnd: window.hwnd,
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244 )
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245 checkVkResult vkCreateWin32SurfaceKHR(instance, addr(surfaceCreateInfo), nil, addr(result))