public IMgLogicalDevice CreateDevice(IMgPhysicalDevice gpu, IMgSurfaceKHR presentationSurface, MgQueueAllocation requestCount, MgQueueFlagBits requestedQueueType, string[] enabledExtensions)
{
// Find a queue that supports graphics operations
MgQueueFamilyProperties[] queueProps;
gpu.GetPhysicalDeviceQueueFamilyProperties(out queueProps);
Debug.Assert(queueProps != null);
Debug.Assert(queueProps.Length >= 1);
uint queueFamilyIndex = 0;
queueFamilyIndex = presentationSurface != null
? FindAppropriateQueueFamilyForSurface(gpu, presentationSurface, queueProps, requestedQueueType)
: FindAppropriateQueueFamily(queueProps, requestedQueueType);
uint noOfQueues = (requestCount == MgQueueAllocation.One) ? 1 : queueProps [queueFamilyIndex].QueueCount;
var queuePriorities = new float[noOfQueues];
for (uint i = 0; i < noOfQueues; ++i)
{
queuePriorities [i] = 0f;
}
var queueCreateInfo = new MgDeviceQueueCreateInfo {
QueueFamilyIndex = queueFamilyIndex,
QueueCount = noOfQueues,
QueuePriorities = queuePriorities,
};
return(CreateDevice(gpu, queueCreateInfo, enabledExtensions));
}
public IMgLogicalDevice CreateLogicalDevice(
IMgSurfaceKHR presentationSurface,
MgDeviceExtensionOptions option,
MgQueueAllocation allocationUsage,
MgQueueFlagBits deviceUsage)
{
string[] extensions = null;
IMgPhysicalDevice[] physicalDevices;
var errorCode = mInstance.EnumeratePhysicalDevices(out physicalDevices);
Debug.Assert(errorCode == Result.SUCCESS, errorCode + " != Result.SUCCESS");
IMgPhysicalDevice firstPhysicalDevice = physicalDevices[0];
if (option == MgDeviceExtensionOptions.ALL)
{
MgExtensionProperties[] extensionProperties;
var err = firstPhysicalDevice.EnumerateDeviceExtensionProperties(null, out extensionProperties);
Debug.Assert(err == Result.SUCCESS, err + " != Result.SUCCESS");
var enabledExtensions = new List <string>();
if (extensionProperties != null)
{
foreach (var ext in extensionProperties)
{
enabledExtensions.Add(ext.ExtensionName);
}
}
extensions = enabledExtensions.ToArray();
}
return(CreateDevice(firstPhysicalDevice, presentationSurface, allocationUsage, deviceUsage, extensions));
}
static uint FindAppropriateQueueFamilyForSurface(
IMgPhysicalDevice gpu,
IMgSurfaceKHR presentationSurface,
MgQueueFamilyProperties[] queueProps,
MgQueueFlagBits requestedQueueType)
{
bool[] supportsPresent = new bool[queueProps.Length];
// Iterate over each queue to learn whether it supports presenting:
for (UInt32 i = 0; i < queueProps.Length; ++i)
{
gpu.GetPhysicalDeviceSurfaceSupportKHR(i, presentationSurface, ref supportsPresent [i]);
}
// Search for a graphics and a present queue in the array of queue
// families, try to find one that supports both
UInt32 requestedQueueNodeIndex = UInt32.MaxValue;
UInt32 presentQueueNodeIndex = UInt32.MaxValue;
for (UInt32 i = 0; i < queueProps.Length; i++)
{
var queue = queueProps [i];
if ((queue.QueueFlags & requestedQueueType) != 0)
{
if (requestedQueueNodeIndex == UInt32.MaxValue)
{
requestedQueueNodeIndex = i;
}
if (supportsPresent [i])
{
requestedQueueNodeIndex = i;
presentQueueNodeIndex = i;
break;
}
}
}
if (presentQueueNodeIndex == UInt32.MaxValue)
{
// If didn't find a queue that supports both graphics and present, then
// find a separate present queue.
for (UInt32 i = 0; i < queueProps.Length; ++i)
{
if (supportsPresent [i])
{
presentQueueNodeIndex = i;
break;
}
}
}
if (requestedQueueNodeIndex == UInt32.MaxValue)
{
throw new Exception("Could not find queue of requested queue type");
}
// Generate error if could not find both a graphics and a present queue
if (presentQueueNodeIndex == UInt32.MaxValue)
{
throw new Exception("Could not find a presentation queue");
}
// VERBATIM from cube.c
// TODO: Add support for separate queues, including presentation,
// synchronization, and appropriate tracking for QueueSubmit.
// NOTE: While it is possible for an application to use a separate graphics
// and a present queues, this demo program assumes it is only using
// one:
if (requestedQueueNodeIndex != presentQueueNodeIndex)
{
throw new Exception("Could not find an common queue");
}
return(requestedQueueNodeIndex);
}
public Result GetPhysicalDeviceSurfaceFormatsKHR(IMgSurfaceKHR surface, out MgSurfaceFormatKHR[] pSurfaceFormats)
{
throw new NotImplementedException();
}
public Result GetPhysicalDeviceSurfacePresentModesKHR(IMgSurfaceKHR surface, out MgPresentModeKHR[] pPresentModes)
{
throw new NotImplementedException();
}
public Result GetPhysicalDeviceSurfaceSupportKHR(uint queueFamilyIndex, IMgSurfaceKHR surface, ref bool pSupported)
{
throw new NotImplementedException();
}
public Result GetPhysicalDeviceSurfaceCapabilitiesKHR(IMgSurfaceKHR surface, out MgSurfaceCapabilitiesKHR pSurfaceCapabilities)
{
throw new NotImplementedException();
}
public Result CreateDisplayPlaneSurfaceKHR(MgDisplaySurfaceCreateInfoKHR createInfo, IMgAllocationCallbacks allocator, out IMgSurfaceKHR pSurface)
{
if (createInfo == null)
{
throw new ArgumentNullException(nameof(createInfo));
}
Debug.Assert(!mIsDisposed);
var bDisplayMode = (VkDisplayModeKHR)createInfo.DisplayMode;
Debug.Assert(bDisplayMode != null);
var pCreateInfo = new VkDisplaySurfaceCreateInfoKHR
{
sType = VkStructureType.StructureTypeDisplaySurfaceCreateInfoKhr,
pNext = IntPtr.Zero,
flags = createInfo.Flags,
displayMode = bDisplayMode.Handle,
planeIndex = createInfo.PlaneIndex,
planeStackIndex = createInfo.PlaneStackIndex,
transform = (VkSurfaceTransformFlagsKhr)createInfo.Transform,
globalAlpha = createInfo.GlobalAlpha,
alphaMode = (VkDisplayPlaneAlphaFlagsKhr)createInfo.AlphaMode,
imageExtent = createInfo.ImageExtent,
};
// MIGHT NEED GetInstanceProcAddr INSTEAD
var allocatorHandle = GetAllocatorHandle(allocator);
UInt64 handle = 0UL;
var result = Interops.vkCreateDisplayPlaneSurfaceKHR(Handle, ref pCreateInfo, allocatorHandle, ref handle);
pSurface = new VkSurfaceKHR(handle);
return(result);
}
public Result CreateWin32SurfaceKHR(MgWin32SurfaceCreateInfoKHR pCreateInfo, IMgAllocationCallbacks allocator, out IMgSurfaceKHR pSurface)
{
if (pCreateInfo == null)
{
throw new ArgumentNullException(nameof(pCreateInfo));
}
Debug.Assert(!mIsDisposed);
var allocatorHandle = GetAllocatorHandle(allocator);
var createInfo = new VkWin32SurfaceCreateInfoKHR
{
sType = VkStructureType.StructureTypeWin32SurfaceCreateInfoKhr,
pNext = IntPtr.Zero,
flags = pCreateInfo.Flags,
hinstance = pCreateInfo.Hinstance,
hwnd = pCreateInfo.Hwnd,
};
// TODO : MIGHT NEED GetInstanceProcAddr INSTEAD
var surfaceHandle = 0UL;
var result = Interops.vkCreateWin32SurfaceKHR(Handle, ref createInfo, allocatorHandle, ref surfaceHandle);
pSurface = new VkSurfaceKHR(surfaceHandle);
return(result);
}
public Result CreateAndroidSurfaceKHR(MgAndroidSurfaceCreateInfoKHR pCreateInfo, IMgAllocationCallbacks allocator, out IMgSurfaceKHR pSurface)
{
throw new NotImplementedException();
}
public void DestroySurfaceKHR(IMgSurfaceKHR surface, IMgAllocationCallbacks allocator)
{
throw new NotImplementedException();
}
public Result CreateDisplayPlaneSurfaceKHR(MgDisplaySurfaceCreateInfoKHR createInfo, IMgAllocationCallbacks allocator, out IMgSurfaceKHR pSurface)
{
throw new NotImplementedException();
}