public static IntPtr vkGetInstanceProcAddr(IntPtr instance, string name)
{
int byteCount = Interop.GetMaxByteCount(name);
var stringPtr = stackalloc byte[byteCount];
Interop.StringToPointer(name, stringPtr, byteCount);
return(vkGetInstanceProcAddr(instance, stringPtr));
}
/// <summary>
/// Returns properties of available physical device extensions
/// </summary>
/// <param name="physicalDevice">The <see cref="VkPhysicalDevice"/> that will be queried.</param>
/// <param name="layerName">Is either null/empty or a string naming the layer to retrieve extensions from.</param>
/// <returns>A <see cref="ReadOnlySpan{VkExtensionProperties}"/>.</returns>
/// <exception cref="VkException">Vulkan returns an error code.</exception>
public static ReadOnlySpan <VkExtensionProperties> vkEnumerateDeviceExtensionProperties(VkPhysicalDevice physicalDevice, string layerName = "")
{
int dstLayerNameByteCount = Interop.GetMaxByteCount(layerName);
var dstLayerNamePtr = stackalloc byte[dstLayerNameByteCount];
Interop.StringToPointer(layerName, dstLayerNamePtr, dstLayerNameByteCount);
uint propertyCount = 0;
vkEnumerateDeviceExtensionProperties(physicalDevice, dstLayerNamePtr, &propertyCount, null).CheckResult();
ReadOnlySpan <VkExtensionProperties> properties = new VkExtensionProperties[propertyCount];
fixed(VkExtensionProperties *propertiesPtr = properties)
{
vkEnumerateDeviceExtensionProperties(physicalDevice, dstLayerNamePtr, &propertyCount, propertiesPtr).CheckResult();
}
return(properties);
}
/// <summary>
/// Returns up to requested number of global extension properties
/// </summary>
/// <param name="layerName">Is either null/empty or a string naming the layer to retrieve extensions from.</param>
/// <returns>A <see cref="ReadOnlySpan{VkExtensionProperties}"/> </returns>
/// <exception cref="VkException">Vulkan returns an error code.</exception>
public static unsafe ReadOnlySpan <VkExtensionProperties> vkEnumerateInstanceExtensionProperties(string?layerName = null)
{
int dstLayerNameByteCount = Interop.GetMaxByteCount(layerName);
byte *dstLayerNamePtr = stackalloc byte[dstLayerNameByteCount];
Interop.StringToPointer(layerName, dstLayerNamePtr, dstLayerNameByteCount);
uint count = 0;
vkEnumerateInstanceExtensionProperties(dstLayerNamePtr, &count, null).CheckResult();
ReadOnlySpan <VkExtensionProperties> properties = new VkExtensionProperties[count];
fixed(VkExtensionProperties *ptr = properties)
{
vkEnumerateInstanceExtensionProperties(dstLayerNamePtr, &count, ptr).CheckResult();
}
return(properties);
}