Device-Query-Functions

The following functions query per-device configuration parameters. They will return 0 if the device or calibration isn't found.
Returns
varies
Args
Device index.
A note on device indexing: HoloPlay Service assigns each connected device a persistent index, starting from 0. When a new device is connected, HoloPlay Service will assign it the lowest index available.
In certain situations, there may be no device present at a certain index. For instance, if two devices are connected, they will receive indices 0, then 1, respectively. If the device indexed 0 is disconnected, there will be a device present at index 1 but not at index 0. The next device to be connected will be assigned index 0.
hpc_GetDevicePropertyWinX
int hpc_GetDevicePropertyWinX(int dev_index)
Returns
X position of monitor, in window coordinates, reported by OS.
Args
Device Index
hpc_GetDevicePropertyWinY
int hpc_GetDevicePropertyWinY(int dev_index)
Returns
Y position of monitor, in window coordinates, reported by OS.
Args
Device Index
The following functions return values retrieved from the lenticular calibration file associated with the device and transmitted over USB. They should be loaded into the lenticular shader as uniform parameters of the same name and type.
hpc_GetDevicePropertyScreenW
int hpc_GetDevicePropertyScreenW(int dev_index)
Returns
Screen width in pixels.
Args
Device Index
hpc_GetDevicePropertyScreenH
int hpc_GetDevicePropertyScreenH(int dev_index)
Returns
Screen height in pixels.
Args
Device Index
hpc_GetDevicePropertyInvView
int hpc_GetDevicePropertyInvView(int dev_index)
Returns
Whether the lenticular shader should be inverted. (1 or 0)
Args
Device Index
hpc_GetDevicePropertyRi
int hpc_GetDevicePropertyRi(int dev_index)
Returns
'Red index' of each lenticular subpixel. (0 or 2)
Args
Device Index
hpc_GetDevicePropertyBi
int hpc_GetDevicePropertyBi(int dev_index)
Returns
'Blue index' of each lenticular subpixel. (0 or 2)
Args
Device Index
hpc_GetDevicePropertyPitch
float hpc_GetDevicePropertyPitch(int dev_index)
Returns
Lenticular lens pitch.
Args
Device Index
hpc_GetDevicePropertyCenter
float hpc_GetDevicePropertyCenter(int dev_index)
Returns
Lenticular center offset.
Args
Device Index
hpc_GetDevicePropertyTilt
float hpc_GetDevicePropertyTilt(int dev_index)
Returns
Lenticular tilt angle.
Args
Device Index
hpc_GetDevicePropertyAspect
float hpc_GetDevicePropertyAspect(int dev_index)
Returns
Display aspect ratio (Equal to ScreenW/ScreenH).
Args
Device Index
hpc_GetDevicePropertyFringe
float hpc_GetDevicePropertyFringe(int dev_index)
Returns
Display fringe correction uniform (currently only applicable to 15.6" Developer/Pro units).
Args
Device Index
hpc_GetDevicePropertySubp
float hpc_GetDevicePropertySubp(int dev_index)
Returns
Display subpixel size.
Args
Device Index

General-Query-Functions

libHoloPlayCore.h

Last modified 1yr ago

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Contents

hpc_GetDevicePropertyWinX

hpc_GetDevicePropertyWinY

hpc_GetDevicePropertyScreenW

hpc_GetDevicePropertyScreenH

hpc_GetDevicePropertyInvView

hpc_GetDevicePropertyRi

hpc_GetDevicePropertyBi

hpc_GetDevicePropertyPitch

hpc_GetDevicePropertyCenter

hpc_GetDevicePropertyTilt

hpc_GetDevicePropertyAspect

hpc_GetDevicePropertyFringe

hpc_GetDevicePropertySubp