parsec-vdd/README.md

parsec-vdd

Standalone ParsecVDD, create virtual display without Parsec, upto 4K 2160p@240hz.

Notice: this is an exploit, tools used: IDA Pro and API Monitor v2.

Getting started

Download and install ParsecVDD:

• https://builds.parsec.app/vdd/parsec-vdd-0.38.0.0.exe

Use this interface GUID to get device handle.

const GUID PARSEC_VDD_DEVINTERFACE = \
  { 0x00b41627, 0x04c4, 0x429e, { 0xa2, 0x6e, 0x02, 0x65, 0xcf, 0x50, 0xc8, 0xfa } };
  
HANDLE device = OpenDeviceHandle(PARSEC_VDD_DEVINTERFACE);

• Try this function to create OpenDeviceHandle(GUID): https://github.com/fufesou/RustDeskIddDriver/blob/fc152f4282cc167b0bb32aa12c97c90788f32c3d/RustDeskIddApp/IddController.c#L722
• Or hard code 😀 with this file path \\?\root#display#%(DISPLAY_INDEX)#{00b41627-04c4-429e-a26e-0265cf50c8fa}

Let's create a virtual monitor.

void CreateMonitor(HANDLE device) {
  uint8_t InBuffer[32]{};
  int OutBuffer;
  DWORD NumberOfBytesTransferred = 0;
  OVERLAPPED Overlapped{};
  
  Overlapped.hEvent = CreateEventW(0, 0, 0, 0);
  DeviceIoControl(device, 0x22E004, InBuffer, sizeof(InBuffer), &OutBuffer, sizeof(OutBuffer), 0, &Overlapped);
  GetOverlappedResult(device, &Overlapped, &NumberOfBytesTransferred, 1);
  if (Overlapped.hEvent) CloseHandle(Overlapped.hEvent);
}

Call this update function to keep up the refresh rate.

void UpdateMonitor() {
  uint8_t InBuffer[32];
  DWORD NumberOfBytesTransferred = 0;
  OVERLAPPED Overlapped{};
  
  Overlapped.hEvent = CreateEventW(0, 0, 0, 0);
  DeviceIoControl(device, 0x0022A00, InBuffer, sizeof(InBuffer), 0, 0, 0, &Overlapped);
  GetOverlappedResult(device, &Overlapped, &NumberOfBytesTransferred, 1);
  if (Overlapped.hEvent) CloseHandle(Overlapped.hEvent);
}

long ticks = 0; // milliseconds
while (!done) {
  Sleep(100);
  if (getTick() - ticks > 200) {
    UpdateMonitor();
    ticks = getTicks();
  }
}

Finally, close the device handle to destroy monitor:

CloseHandle(device);

Supported resolutions

Resolution	Name	Notes
4096 x 2160	DCI 4K	some GPUs may not support, e.g GTX 1650
3840 x 2160	4K UHD
3840 x 1600	UltraWide 24:10
3840 x 1080	UltraWide 32:9
3440 x 1440
3240 x 2160
3200 x 1800	3K 16:9
3000 x 2000
2880 x 1800	2.8K 16:10
2880 x 1620	2.8K 16:9
2736 x 1824
2560 x 1600	2K 16:10
2560 x 1440	2K 16:9
2560 x 1080	UltraWide 21:9
2496 x 1664
2256 x 1504
2048 x 1152
1920 x 1200	FHD 16:10
1920 x 1080	FHD 16:9
1800 x 1200	FHD 3:2
1680 x 1050	HD+ 16:10
1600 x 1200	HD+ 4:3
1600 x 900	HD+ 16:9
1440 x 900	HD 16:10
1366 x 768
1280 x 800	HD 16:10
1280 x 720	HD 16:9

ParsecVDD

Name: Parsec Virtual Display Adapter
Hardware ID: Root\Parsec\VDA
Adapter GUID: {00b41627-04c4-429e-a26e-0265cf50c8fa}
EDID:

00 FF FF FF FF FF FF 00  42 63 D0 CD ED 5F 84 00
11 1E 01 04 A5 35 1E 78  3B 57 E0 A5 54 4F 9D 26
12 50 54 27 CF 00 71 4F  81 80 81 40 81 C0 81 00
95 00 B3 00 01 01 86 6F  80 A0 70 38 40 40 30 20
35 00 E0 0E 11 00 00 1A  00 00 00 FD 00 30 A5 C1
C1 29 01 0A 20 20 20 20  20 20 00 00 00 FC 00 50
61 72 73 65 63 56 44 41  0A 20 20 20 00 00 00 10
00 00 00 00 00 00 00 00  00 00 00 00 00 00 01 C6
02 03 10 00 4B 90 05 04  03 02 01 11 12 13 14 1F
8A 4D 80 A0 70 38 2C 40  30 20 35 00 E0 0E 11 00
00 1A FE 5B 80 A0 70 38  35 40 30 20 35 00 E0 0E
11 00 00 1A FC 7E 80 88  70 38 12 40 18 20 35 00
E0 0E 11 00 00 1E A4 9C  80 A0 70 38 59 40 30 20
35 00 E0 0E 11 00 00 1A  02 3A 80 18 71 38 2D 40
58 2C 45 00 E0 0E 11 00  00 1E 00 00 00 00 00 00
00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 A6

Visit http://www.edidreader.com/ to check online or use AW EDID Editor