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feat: add missing key for parent GPU, add Intel vendor

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- DisablePreferredRenderAdapterChange should be set to 0 when PreferredRenderAdapterVendorId is added
- Add 0x8086 for Intel GPU vendor
This commit is contained in:
Nguyen Duy
2026-05-14 15:08:43 +07:00
parent 8a03b13b25
commit f56ba3103d
1 changed files with 28 additions and 19 deletions
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app/Vdd/Utils.cs
+28 -19
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@@ -77,27 +77,34 @@ namespace ParsecVDisplay.Vdd
}
/// <summary>
/// DXGI adapter vendor ids for VDD parent GPU selection.
/// Ref: https://support.parsec.app/hc/en-us/articles/4423615425293-VDD-Advanced-Configuration#parent_gpu
/// </summary>
public enum ParentGPU
{
Auto = 0,
Auto = 0,
NVIDIA = 0x10DE,
AMD = 0x1002,
AMD = 0x1002,
Intel = 0x8086,
}
const string PARAMETERS_KEY =
"SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\WUDF\\Services\\ParsecVDA\\Parameters";
const string VALUE_VENDOR_ID = "PreferredRenderAdapterVendorId";
const string VALUE_DISABLE_CHANGE = "DisablePreferredRenderAdapterChange";
/// <summary>
/// Get parent GPU of VDD.
/// </summary>
public static ParentGPU GetParentGPU()
{
using (var parameters = Registry.LocalMachine.OpenSubKey(
"SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\WUDF\\Services\\ParsecVDA\\Parameters",
RegistryKeyPermissionCheck.ReadSubTree))
PARAMETERS_KEY, RegistryKeyPermissionCheck.ReadSubTree))
{
if (parameters != null)
{
object value = parameters.GetValue("PreferredRenderAdapterVendorId");
object value = parameters.GetValue(VALUE_VENDOR_ID);
if (value != null)
{
return (ParentGPU)Convert.ToInt32(value);
@@ -109,26 +116,28 @@ namespace ParsecVDisplay.Vdd
}
/// <summary>
/// Set parent GPU for VDD.
/// This function requires admin rights.
/// Set parent GPU for VDD. Requires admin rights.
/// The driver ships with <c>DisablePreferredRenderAdapterChange = 1</c> which
/// blocks any vendor preference, so we toggle that to 0 before writing the
/// vendor id, and restore it to 1 when switching back to Auto.
/// </summary>
public static void SetParentGPU(ParentGPU kind)
{
using (var parameters = Registry.LocalMachine.OpenSubKey(
"SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\WUDF\\Services\\ParsecVDA\\Parameters",
RegistryKeyPermissionCheck.ReadWriteSubTree))
PARAMETERS_KEY, RegistryKeyPermissionCheck.ReadWriteSubTree))
{
if (parameters != null)
if (parameters == null)
return;
if (kind == ParentGPU.Auto)
{
if (kind == ParentGPU.Auto)
{
parameters.DeleteValue("PreferredRenderAdapterVendorId", false);
}
else
{
parameters.SetValue("PreferredRenderAdapterVendorId",
(uint)kind, RegistryValueKind.DWord);
}
parameters.DeleteValue(VALUE_VENDOR_ID, false);
parameters.SetValue(VALUE_DISABLE_CHANGE, 1, RegistryValueKind.DWord);
}
else
{
parameters.SetValue(VALUE_DISABLE_CHANGE, 0, RegistryValueKind.DWord);
parameters.SetValue(VALUE_VENDOR_ID, (uint)kind, RegistryValueKind.DWord);
}
}
}