/// <summary>
/// Create a new managed `SwapChain` object. Native object will only be created with a call to the 'Create` method.
/// </summary>
/// <param name="_presentableQueue">Presentable queue.</param>
/// <param name="width">Swapchain x dimension.</param>
/// <param name="height">Swapchain y dimension.</param>
/// <param name="format">Swapchain's images format.</param>
/// <param name="presentMode">a present mode supported by the engine as returned by the `GetSurfacePresentModes` method of the `PhysicalDevice`</param>
public SwapChain(PresentQueue _presentableQueue, uint width = 800, uint height = 600, VkFormat format = VkFormat.B8g8r8a8Unorm,
VkPresentModeKHR presentMode = VkPresentModeKHR.FifoKHR)
: base(_presentableQueue.dev)
{
presentQueue = _presentableQueue;
createInfos = VkSwapchainCreateInfoKHR.New();
VkSurfaceFormatKHR[] formats = Dev.phy.GetSurfaceFormats(presentQueue.Surface);
for (int i = 0; i < formats.Length; i++)
{
if (formats[i].format == format)
{
createInfos.imageFormat = format;
createInfos.imageColorSpace = formats[i].colorSpace;
break;
}
}
if (createInfos.imageFormat == VkFormat.Undefined)
{
throw new Exception("Invalid format for swapchain: " + format);
}
VkPresentModeKHR[] presentModes = Dev.phy.GetSurfacePresentModes(presentQueue.Surface);
for (int i = 0; i < presentModes.Length; i++)
{
if (presentModes[i] == presentMode)
{
createInfos.presentMode = presentMode;
break;
}
}
if (createInfos.presentMode != presentMode)
{
throw new Exception("Invalid presentMode for swapchain: " + presentMode);
}
createInfos.surface = presentQueue.Surface;
createInfos.imageExtent = new VkExtent2D(width, height);
createInfos.imageArrayLayers = 1;
createInfos.imageUsage = IMAGES_USAGE;
createInfos.imageSharingMode = VkSharingMode.Exclusive;
createInfos.compositeAlpha = VkCompositeAlphaFlagsKHR.OpaqueKHR;
createInfos.presentMode = presentMode;
createInfos.clipped = 1;
}
/// <summary>
/// Override this method to create additional queue. Dedicated queue of the requested type will be selected first, created queues may excess
/// available physical queues.
/// </summary>
protected virtual void createQueues()
{
presentQueue = new PresentQueue(dev, VkQueueFlags.Graphics, hSurf);
}