--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/svk/api.nim	Sat May 03 01:03:01 2025 +0700
@@ -0,0 +1,56 @@
+import std/strutils
+import std/logging
+
+include ./vkapi
+
+template checkVkResult*(call: untyped) =
+  when defined(release):
+    discard call
+  else:
+    # yes, a bit cheap, but this is only for nice debug output
+    var callstr = astToStr(call).replace("\n", "")
+    while callstr.find("  ") >= 0:
+      callstr = callstr.replace("  ", " ")
+    debug "Calling vulkan: ", callstr
+    let value = call
+    if value != VK_SUCCESS:
+      error "Vulkan error: ", astToStr(call), " returned ", $value
+      raise newException(
+        Exception, "Vulkan error: " & astToStr(call) & " returned " & $value
+      )
+
+type SVkInstance* = object
+  vkInstance: VkInstance
+
+proc `=copy`(a: var SVkInstance, b: SVkInstance) {.error.}
+
+proc `=destroy`(a: SVkInstance) =
+  if a.vkInstance.pointer != nil:
+    a.vkInstance.vkDestroyInstance(nil)
+
+proc svkCreateInstance*(
+    applicationName: string,
+    enabledLayers: openArray[string] = [],
+    enabledExtensions: openArray[string] = [],
+    engineName = "semicongine",
+    majorVersion = 1'u32,
+    minorVersion = 3'u32,
+): SVkInstance =
+  let
+    appinfo = VkApplicationInfo(
+      pApplicationName: applicationName,
+      pEngineName: engineName,
+      apiVersion: VK_MAKE_API_VERSION(0, majorVersion, minorVersion, 0),
+    )
+    layersC = enabledLayers.allocCStringArray()
+    extensionsC = enabledLayers.allocCStringArray()
+    createinfo = VkInstanceCreateInfo(
+      pApplicationInfo: addr appinfo,
+      enabledLayerCount: enabledLayers.len.uint32,
+      ppEnabledLayerNames: layersC,
+      enabledExtensionCount: enabledExtensions.len.uint32,
+      ppEnabledExtensionNames: extensionsC,
+    )
+  checkVkResult vkCreateInstance(addr createinfo, nil, addr result.vkInstance)
+  layersC.deallocCStringArray()
+  extensionsC.deallocCStringArray()