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PARSEC_VDD_SPECS.md

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Parsec VDD Specs

This document provides detailed specifications for the Parsec Virtual Display Driver (VDD). It includes information about the preset display modes, adapter, monitor and common usage scenarios.

Preset display modes

All of the following display modes are set by driver default.

Resolution Common Name Aspect Ratio Refresh Rates (Hz)
4096 x 2160 DCI 4K 1.90:1 (256:135) 24/30/60/144/240
3840 x 2160 4K UHD 16:9 24/30/60/144/240
3840 x 1600 UltraWide 24:10 24/30/60/144/240
3840 x 1080 UltraWide 32:9 (2x 16:9 FHD) 24/30/60/144/240
3440 x 1440 21.5:9 (43:18) 24/30/60/144/240
3240 x 2160 3:2 60
3200 x 1800 3K 16:9 24/30/60/144/240
3000 x 2000 3:2 60
2880 x 1800 2.8K 16:10 60
2880 x 1620 2.8K 16:9 24/30/60/144/240
2736 x 1824 60
2560 x 1600 2K 16:10 24/30/60/144/240
2560 x 1440 2K 16:9 24/30/60/144/240
2560 x 1080 UltraWide 21:9 24/30/60/144/240
2496 x 1664 60
2256 x 1504 60
2048 x 1152 60/144/240
1920 x 1200 FHD 16:10 60/144/240
1920 x 1080 FHD 16:9 24/30/60/144/240
1800 x 1200 FHD 3:2 60
1680 x 1050 HD+ 16:10 60/144/240
1600 x 1200 HD+ 4:3 24/30/60/144/240
1600 x 900 HD+ 16:9 60/144/240
1440 x 900 HD 16:10 60/144/240
1366 x 768 60/144/240
1280 x 800 HD 16:10 60/144/240
1280 x 720 HD 16:9 60/144/240

Notes:

  • Default display mode is 1920 x 1080 @ 60 Hz.
  • All resolutions are compatible with 60 Hz.
  • Low GPU such as GTX 1650 may get bugged when streaming in DCI 4K.

To add more display modes (up to 5), check out this official guide from Parsec.

Driver implementation

  • Type: user mode
  • IddCx version: 1.4 or 1.5
  • IO control codes:
// add monitor
CTL_CODE(FILE_DEVICE_UNKNOWN, 0x800 + 1, METHOD_BUFFERED, FILE_READ_ACCESS | FILE_WRITE_ACCESS)
// remove monitor
CTL_CODE(FILE_DEVICE_UNKNOWN, 0x800 + 2, METHOD_BUFFERED, FILE_WRITE_ACCESS)
// update timing
CTL_CODE(FILE_DEVICE_UNKNOWN, 0x800 + 3, METHOD_BUFFERED, FILE_WRITE_ACCESS)
// query version
CTL_CODE(FILE_DEVICE_UNKNOWN, 0x800 + 4, METHOD_BUFFERED, FILE_READ_ACCESS | FILE_WRITE_ACCESS)
// set preferred adapter LUID
CTL_CODE(FILE_DEVICE_UNKNOWN, 0x800 + 5, METHOD_BUFFERED, FILE_WRITE_ACCESS)

Adapter info

Property Value
Name Parsec Virtual Display Adapter
Hardware ID Root\Parsec\VDA
Class GUID {4d36e968-e325-11ce-bfc1-08002be10318}
Adapter GUID {00b41627-04c4-429e-a26e-0265cf50c8fa}

Monitor info

Property Value
ID PSCCDD0
Name ParsecVDA
EDID (see the hex code below) 
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

Notes: