📓Native Function Reference

Building Bridge Applications

The easiest way to build an application using the new Bridge SDK is to link against the headers and dynamic libraries included in the Bridge installation. Bridge installs header files and libraries alongside the driver executable. The default install locations are listed below for Bridge version 2.4.10.

MacOS

• Headers: /Applications/Looking Glass Bridge 2.4.10.app/Contents/runtime

• Libraries: /Applications/Looking Glass Bridge 2.4.10.app/Contents/MacOS

Windows

• Headers: C:\Program Files\Looking Glass\Looking Glass Bridge 2.4.10\runtime

• Libraries: C:\Program Files\Looking Glass\Looking Glass Bridge 2.4.10

Update your project build settings to use a compiler include directive for the headers and a library search path for the libraries. The libraries may be safely copied into a project and distributed with an application as well.

The bridge.h header exposes C functions and a C++ wrapper class to access Bridge SDK functionality. The C++ wrapper is even capable of searching for the Bridge dynamic libraries installed on host computers. The native function reference below is a complete list of functions in the SDK.

Lifecycle Functions

The lifecycle functions are generally required for a normal native application integration.

initialize_bridge

bool initialize_bridge(const char *app_name);

This function initializes the Bridge thread and allocates required resources.

Parameters

app_name - the C-string name to associate with this application instance

Returns

TRUE if successful, FALSE otherwise

Note: This function must be called prior to any other from the Bridge SDK.

See also

uninitialize_bridge

---

uninitialize_bridge

bool uninitialize_bridge();

This function uninitializes the Bridge thread and deallocates required resources.

Returns

always returns TRUE

See also

initialize_bridge

instance_window_gl

bool instance_window_gl(WINDOW_HANDLE *wnd, 
                        unsigned long display_index = -1);

Creates a new window using display parameters.

If the display_index parameter is not supplied, the Bridge SDK will search for the first display that matches a Looking Glass product and use that. The window position and size will match the selected display.

Parameters

wnd - the pointer used to store the platform-specific window handle

display_index - the optional index of the display to configure the window for. A value of -1 will select the first available Looking Glass display.

Returns

TRUE when a window was created, FALSE otherwise

Note: The window created is meant for use with OpenGL texture sharing

See also

instance_offscreen_window

instance_offscreen_window

bool instance_offscreen_window(WINDOW_HANDLE *wnd, 
                               unsigned long width,
                               unsigned long height,
                               const wchar_t* calibration_path);

Creates a new window using the input parameters.

The window width and height will match in the input parameters. The calibration parameters will be loaded from the input calibration_path parameter. This function is meant for automated rendering and does not require a display.

Parameters

wnd - the pointer used to store the platform-specific window handle

width - the desired width of the new window

height - the desired height of the new window

calibration_path - the filesystem path for a Looking Glass calibration file

Returns

TRUE when a window was created, FALSE otherwise

See also

instance_window_gl

---

draw_interop_quilt_texture_gl

bool draw_interop_quilt_texture_gl(WINDOW_HANDLE wnd, 
                                   unsigned long long texture, 
                                   PixelFormats format, 
                                   unsigned long width, 
                                   unsigned long height, 
                                   unsigned long vx, 
                                   unsigned long vy, 
                                   float aspect, 
                                   float zoom);

Triggers the Looking Glass optical transformation as a rendering post-processing step.

The texture width and height values may not be larger than the width and height values returned from get_max_texture_size. This function designates the input texture as the source of quilt views for which the optical transformation will be applied.

Parameters

wnd - the pointer used to store the platform-specific window handle

texture - the texture handle to be shared between rendering contexts

format - the pixel format of the supplied texture

width - the width of the supplied texture

height - the height of the supplied texture

vx - the horizontal count of quilt views (columns) rendered to the texture

vy - the vertical count of quilt views (rows) rendered to the texture

aspect - the aspect ratio of the views

zoom - the optional zoom to be applied

Returns

FALSE for invalid configurations, TRUE otherwise

---

Utility Functions

The utility functions are useful for handling operations like converting an RGBD asset to a Quilt asset or saving framebuffer textures to files for debugging purposes.

get_displays

bool get_displays(int* number_of_indices, unsigned long* indices);

Returns the display indices attached to the host.

The caller is responsible for allocating the array of index values To get the array size, this function should be called twice. When called with the indices parameter set to nullptr, it will return the size of the indices array. When called with the indices parameter set to an array pointer, the display indices will be copied into the supplied array up to a limit supplied by number_of_indices.

Parameters

number_of_indices - the pointer to the returned size of the index array

indices - the pointer to the returned array of display indices

Returns

FALSE if number_of_indices is null, TRUE otherwise

---

get_bridge_version

bool get_bridge_version(unsigned long* major, 
                        unsigned long *minor,
                        unsigned long* build,
                        int* number_of_postfix_wchars,
                        wchar_t* postfix);

This function queries the Bridge SDK to get the version number.

The caller is responsible for allocating the postfix C-string buffer. To get the buffer size, this function should be called twice. When called with the postfix parameter set to nullptr, it will return the size of the postfix string.

When called with the postfix parameter set to a buffer pointer, the build hash postfix will be copied into the supplied buffer up to the length of characters specified in the number_of_postfix_wchars parameter.

Parameters

major - the pointer to the returned numeral representing the major version

minor - the pointer to the returned numeral representing the minor version

build - the pointer to the returned numeral representing the build (or patch) version

number_of_postfix_wchars - the pointer to the length of characters in the version postfix string

postfix - the pointer to the version postfix string

Returns

The semantic version of Bridge with build commit hash

---

get_display_for_window

bool get_display_for_window(WINDOW_HANDLE wnd, unsigned long* display_index);

Returns the display index used to render the window.

Parameters

wnd - the pointer used to store the platform-specific window handle

display_index - the zero-based index of the display

Returns

TRUE if successful, FALSE otherwise

---

get_max_texture_size

bool get_max_texture_size(WINDOW_HANDLE wnd, unsigned long* size);

returns the maximum texture size for rendering to the window

Parameters

wnd - the pointer used to store the platform-specific window handle

size - the pointer to the returned texture size

Returns

the maximum texture size dimension to be used for rendering to the window

See also

draw_interop_quilt_texture_gl

---

show_window

bool show_window(WINDOW_HANDLE wnd, bool flag);

shows or hides the rending window based upon the input flag

Parameters

wnd - the pointer used to store the platform-specific window handle

flag - the toggle to show or hide the window: FALSE=hide, TRUE=show

Returns

FALSE for an invalid window, TRUE otherwise

---

quiltify_rgbd

bool quiltify_rgbd(WINDOW_HANDLE wnd, 
                   unsigned long columns, 
                   unsigned long rows, 
                   unsigned long views, 
                   float aspect, 
                   float zoom, 
                   float cam_dist, 
                   float fov, 
                   float crop_pos_x, 
                   float crop_pos_y, 
                   unsigned long depth_inversion, 
                   unsigned long chroma_depth, 
                   unsigned long depth_loc, 
                   float depthiness, 
                   float depth_cutoff, 
                   float focus, 
                   const wchar_t* input_path, 
                   const wchar_t* output_path);

Converts an RGBD image into a quilt image using input parameters

Parameters

wnd - the pointer used to store the platform-specific window handle

columns - the desired output quilt columns

rows - the desired output quilt rows

views - the desired total number of views

aspect - the aspect ratio of the resulting quilt

zoom - the zoom applied to the RGBD input

cam_dist - the camera distance applied during RGBD rendering

fov - the field of view applied during RGBD rendering

crop_pos_x - the x coordinate offset applied during RGBD rendering

crop_pos_y - the y coordinate offset applied during RGBD rendering

depth_inversion - a toggle to invert the depth map: 0=FALSE, 1=TRUE

chroma_depth - a toggle to interpret the depth map using a full color spectrum: 0=FALSE, 1=TRUE

depth_loc - the location of the depth map within the image: 0=top, 1=bottom, 2=right, 3=left

depthiness - the amount of z-scaling applied to the RGBD input

depth_cutoff - a z-depth threshold value applied to the RGBD input

focus - the z-depth value representing the focal plane of the resulting quilt

input_path - the local filesystem path to the input RGBD image

output_path - the local filesystem path for the desired output quilt image

Returns

TRUE when successful, FALSE otherwise

save_texture_to_file_gl

bool save_texture_to_file_gl(WINDOW_HANDLE wnd, 
                             char* filename,
                             unsigned long long texture,
                             PixelFormats format,
                             unsigned long width,
                             unsigned long height);

saves the input OpenGL texture to a file

Parameters

wnd - the pointer used to store the platform-specific window handle

filename - the filesystem path for the saved image

texture - the texture handle to be saved to disk

format - the pixel format of the supplied texture

width - the width of the supplied texture

height - the height of the supplied texture

Returns

TRUE if successful, FALSE otherwise

See also

save_image_to_file

---

save_image_to_file

bool save_image_to_file(WINDOW_HANDLE wnd, 
                        char* filename, 
                        void* image,
                        PixelFormats format,
                        unsigned long width,
                        unsigned long height);

saves the raw image buffer to a file

Parameters

wnd - the pointer used to store the platform-specific window handle

filename - the filesystem path for the saved image

image - the raw image buffer to be saved

format - the pixel format of the supplied image

width - the width of the supplied image

height - the height of the supplied image

Returns

TRUE if successful, FALSE otherwise

See also

save_texture_to_file_gl

---

Window Query Functions

The following functions assume that a Looking Glass window was created for a connected Looking Glass display using instance_window_gl. This window is a required input parameter for getting additional device info.

The legacy Looking Glass Core SDK assumed that only a single Looking Glass device would be used. If multiple devices are connected to a computer then it was quite difficult to render to them both simultaneously. The new Bridge SDK provides support for developers using multiple Looking Glass displays and for easily exporting images rendered using 3rd party engines.

get_window_dimensions

bool get_window_dimensions(WINDOW_HANDLE wnd, 
                           unsigned long* width, 
                           unsigned long* height);

returns with size dimensions of the input window

Parameters

wnd - the pointer used to store the platform-specific window handle

width - the pointer to the returned width value

height - the pointer to the returned height value

Returns

width and height for the input window

See also

get_window_position

get_dimensions_for_display

---

get_window_position

bool get_window_position(WINDOW_HANDLE wnd, long* x, long* y);

returns with position of the input window

Parameters

wnd - the pointer used to store the platform-specific window handle

x - the pointer to the returned x coordinate value

y - the pointer to the returned y coordinate value

Returns

the x and y coordinates for the input window

See also

get_window_dimensions

---

get_calibration

bool get_calibration(WINDOW_HANDLE wnd,
	             float* center,
	             float *pitch,
	             float *slope,
	             int* width,
	             int* height,
	             float* dpi,
	             float* flip_x,
	             int *invView,
	             float *viewcone,
	             float *fringe,
	             int* cell_pattern_mode,
	             int* number_of_cells,
	             CalibrationSubpixelCell* cells);

Returns the calibration values for the given window.

The calibration parameters assocaited with the input window will be returned as parameter values. If the cells pointer is null, it will be ignored. Any other parameters with null values will be considered invalid.

Parameters

wnd - the pointer used to store the platform-specific window handle

center - the pointer to the returned center value

pitch - the pointer to the returned pitch value

slope - the pointer to the returned slope value

width - the pointer to the returned width value

height - the pointer to the returned height value

dpi - the pointer to the returned DPI value

flip_x - the pointer to the returned horizontal flip toggle. 0=FALSE, 1=TRUE

invView - the pointer to the returned inverted views toggle. 0=FALSE, 1=TRUE

viewcone - the pointer to the returned viewcone value

fringe - the pointer to the returned fringe value

cell_pattern_mode - the pointer to the returned cell pattern mode

number_of_cells - the pointer to the returned cell count

cells - the pointer to the returned cell pattern struct

Returns

FALSE for invalid input parameters, TRUE otherwise

See also

get_calibration_for_display

---

get_device_name

bool get_device_name(WINDOW_HANDLE wnd, 
                     int* number_of_device_name_wchars, 
                     wchar_t* device_name);

Returns the device name for the given window.

The caller is responsible for allocating the device_name C-string buffer. To get the buffer size, this function should be called twice. When called with the device_name parameter set to nullptr, it will return the size of the device_name string.

When called with the device_name parameter set to a buffer pointer, the device name will be copied into the supplied buffer up to the length of characters specified in the number_of_device_name_wchars parameter.

The size of the buffer is returned as a count of wide string characters. In practice, wchar is 32 bits on Linux and MacOS but 16 bits on Windows.

Parameters

wnd - the pointer used to store the platform-specific window handle

number_of_device_name_wchars - the pointer to the returned size of the C-string buffer

device_name - the pointer to the returned size device name C-string buffer

Returns

FALSE if number_of_device_name_wchars is null, TRUE otherwise

See also

get_device_name_for_display

---

get_device_serial

bool get_device_serial(WINDOW_HANDLE wnd, 
                       int* number_of_serial_wchars, 
                       wchar_t* serial);

Returns the device serial number for the given window.

The caller is responsible for allocating the serial number C-string buffer. To get the buffer size, this function should be called twice. When called with the serial parameter set to nullptr, it will return the size of the serial string.

When called with the serial parameter set to a buffer pointer, the device serial will be copied into the supplied buffer up to the length of characters specified in the number_of_serial_wchars parameter.

The size of the buffer is returned as a count of wide string characters. In practice, wchar is 32 bits on Linux and MacOS but 16 bits on Windows.

Parameters

wnd - the pointer used to store the platform-specific window handle

number_of_serial_wchars - the pointer to the returned size of the C-string buffer

serial - the pointer to the returned size device serial C-string buffer

Returns

FALSE if number_of_serial_wchars is null, TRUE otherwise

See also

get_device_serial_for_display

---

get_default_quilt_settings

bool get_default_quilt_settings(WINDOW_HANDLE wnd, 
                                float* aspect, 
                                int* quilt_width, 
                                int* quilt_height, 
                                int* quilt_columns, 
                                int* quilt_rows);

Returns the ideal quilt settings for the given window. The ideal quilt settings are aset of heuristics defined by Looking Glass for each display product.

Parameters

wnd - the pointer used to store the platform-specific window handle

aspect - the pointer to the returned aspect value

quilt_width - the pointer to the returned width value

quilt_height - the pointer to the returned height value

quilt_columns - the pointer to the returned quilt columns value

quilt_rows - the pointer to the returned quilt rows value

Returns

FALSE if number_of_serial_wchars is null, TRUE otherwise

See also

get_default_quilt_settings_for_display

---

get_device_type

bool get_device_type(WINDOW_HANDLE wnd, int* hw_enum);

returns the type of display product to render the window

Parameters

wnd - the pointer used to store the platform-specific window handle

hw_enum - the display enum value

Returns

TRUE if successful, FALSE otherwise

See also

get_device_type_for_display

---

get_viewcone

bool get_viewcone(WINDOW_HANDLE wnd, float* viewcone);

returns the viewcone value for the display product that renders the window

Parameters

wnd - the pointer used to store the platform-specific window handle

viewcone - the pointer to the returned viewcone value

Returns

TRUE if successful, FALSE otherwise

See also

get_viewcone_for_display

---

get_invview

bool get_invview(WINDOW_HANDLE wnd, int* invview);

returns the inverted views toggle for the given window

Parameters

wnd - the pointer used to store the platform-specific window handle

invview - the pointer to the returned inverted views toggle. 0=FALSE, 1=TRUE

Returns

TRUE if successful, FALSE otherwise

See also

get_calibration

---

get_ri

bool get_ri(WINDOW_HANDLE wnd, int* ri);

returns the red index for the display used with the given window

Parameters

wnd - the pointer used to store the platform-specific window handle

ri - the pointer to the returned red index value (0 or 2)

Returns

TRUE if successful, FALSE otherwise

Note: This function is meant only to provide compatibility with HoloPlay Core SDK

See also

get_calibration

---

get_bi

bool get_bi(WINDOW_HANDLE wnd, int *bi);

Returns the blue index for the display used with the given window.

Parameters

wnd - the pointer used to store the platform-specific window handle

bi - the pointer to the returned blue index value (0 or 2)

Returns

TRUE if successful, FALSE otherwise

Note: This function is meant only to provide compatibility with HoloPlay Core SDK

See also

get_calibration

---

get_tilt

bool get_tilt(WINDOW_HANDLE wnd, float* tilt);

returns the tilt for the display used with the given window

Parameters

wnd - the pointer used to store the platform-specific window handle

tilt - the pointer to the returned tilt value

Returns

TRUE if successful, FALSE otherwise

Note: This function is meant only to provide compatibility with HoloPlay Core SDK

See also

get_calibration

---

get_displayaspect

bool get_displayaspect(WINDOW_HANDLE wnd, float* displayaspect);

returns the aspect ratio of the display used with the given window

Parameters

wnd - the pointer used to store the platform-specific window handle

displayaspect - the pointer to the returned aspect ratio

Returns

TRUE if successful, FALSE otherwise

Note: This function is meant only to provide compatibility with HoloPlay Core SDK

See also

get_calibration

---

get_fringe

bool get_fringe(WINDOW_HANDLE wnd, float* fringe);

returns the fringe value of the display used with the given window

Parameters

wnd - the pointer used to store the platform-specific window handle

fringe - the pointer to the returned fringe value

Returns

TRUE if successful, FALSE otherwise

Note: This function is meant only to provide compatibility with HoloPlay Core SDK

See also

get_calibration

---

get_subp

bool get_subp(WINDOW_HANDLE wnd, float* subp);

returns the subpixel size of the display used with the given window

Parameters

wnd - the pointer used to store the platform-specific window handle

subp - the pointer to the returned sub pixel size value

Returns

TRUE if successful, FALSE otherwise

---

get_pitch

bool get_pitch(WINDOW_HANDLE wnd, float* pitch);

returns the pitch of the display used with the given window

Parameters

wnd - the pointer used to store the platform-specific window handle

pitch - the pointer to the returned pitch value

Returns

TRUE if successful, FALSE otherwise

Note: This function is meant only to provide compatibility with HoloPlay Core SDK

See also

get_calibration

---

get_center

bool get_center(WINDOW_HANDLE wnd, float* center);

returns the center of the display used with the given window

Parameters

wnd - the pointer used to store the platform-specific window handle

center - the pointer to the returned center value

Returns

TRUE if successful, FALSE otherwise

Note: This function is meant only to provide compatibility with HoloPlay Core SDK

See also

get_calibration

---

Display Query Functions

The following functions require a display index parameter which corresponds to an index returned from the get_displays function. These functions may be called before any window is created to allow a developer to select a specific Looking Glass device if multiple devices are connected.

get_device_name_for_display

bool get_device_name_for_display(unsigned long display_index, 
                                 int* number_of_device_name_wchars, 
                                 wchar_t* device_name);

Returns the device name for the given display index.

The caller is responsible for allocating the device_name C-string buffer. To get the buffer size, this function should be called twice. When called with the device_name parameter set to nullptr, it will return the size of the device_name string.

When called with the device_name parameter set to a buffer pointer, the device name will be copied into the supplied buffer up to the length of characters specified in the number_of_device_name_wchars parameter.

The size of the buffer is returned as a count of wide string characters. In practice, wchar is 32 bits on Linux and MacOS but 16 bits on Windows.

Parameters

display_index - the index for the target Looking Glass display

number_of_device_name_wchars - the pointer to the returned size of the C-string buffer

device_name - the pointer to the returned size device name C-string buffer

Returns

FALSE if number_of_device_name_wchars is null, TRUE otherwise

See also

get_device_name

get_displays

---

get_device_serial_for_display

bool get_device_serial_for_display(unsigned long display_index, 
                                   int* number_of_serial_wchars, 
                                   wchar_t* serial);

Returns the device serial number for the given display index.

The caller is responsible for allocating the serial number C-string buffer. To get the buffer size, this function should be called twice. When called with the serial parameter set to nullptr, it will return the size of the serial string.

When called with the serial parameter set to a buffer pointer, the device serial will be copied into the supplied buffer up to the length of characters specified in the number_of_serial_wchars parameter.

The size of the buffer is returned as a count of wide string characters. In practice, wchar is 32 bits on Linux and MacOS but 16 bits on Windows.

Parameters

display_index - the index for the target Looking Glass display

number_of_serial_wchars - the pointer to the returned size of the C-string buffer

serial - the pointer to the returned size device serial C-string buffer

Returns

FALSE if number_of_serial_wchars is null, TRUE otherwise

See also

get_device_serial

get_displays

---

get_dimensions_for_display

bool get_dimensions_for_display(unsigned long display_index, 
                                unsigned long* width, 
                                unsigned long* height);

returns with size dimensions of the given display index

Parameters

display_index - the index for the target Looking Glass display

width - the pointer to the returned width value

height - the pointer to the returned height value

Returns

width and height for the input window

See also

get_window_dimensions

get_displays

---

get_window_position_for_display

bool get_window_position_for_display(unsigned long display_index, long* x, long* y);

returns with position of the given display index

Parameters

display_index - the index for the target Looking Glass display

x - the pointer to the returned x coordinate value

y - the pointer to the returned y coordinate value

Returns

the x and y coordinates for the input window

See also

get_window_position

get_displays

---

get_device_type_for_display

bool get_device_type_for_display(unsigned long display_index, int* hw_enum);

returns the type of display product for the given display index

Parameters

display_index - the index for the target Looking Glass display

hw_enum - the display enum value

Returns

TRUE if successful, FALSE otherwise

See also

get_device_type

---

get_calibration_for_display

bool get_calibration_for_display(unsigned long display_index,
			         float* center,
			         float *pitch,
			         float *slope,
			         int* width,
			         int* height,
			         float* dpi,
			         float* flip_x,
			         int* invView,
			         float* viewcone,
			         float* fringe,
			         int* cell_pattern_mode,
			         int* number_of_cells,
			         CalibrationSubpixelCell* cells);

returns the calibration values for the given display index

Parameters

display_index - the index for the target Looking Glass display

center - the pointer to the returned center value

pitch - the pointer to the returned pitch value

slope - the pointer to the returned slope value

width - the pointer to the returned width value

height - the pointer to the returned height value

dpi - the pointer to the returned DPI value

flip_x - the pointer to the returned horizontal flip toggle. 0=FALSE, 1=TRUE

invView - the pointer to the returned inverted views toggle. 0=FALSE, 1=TRUE

viewcone - the pointer to the returned viewcone value

fringe - the pointer to the returned fringe value

cell_pattern_mode - the pointer to the returned cell pattern mode

number_of_cells - the pointer to the returned cell count

cells - the pointer to the returned cell pattern struct

Returns

FALSE for invalid input parameters, TRUE otherwise

See also

get_calibration

get_displays

---

get_invview_for_display

bool get_invview_for_display(unsigned long display_index, int* invview);

returns the inverted views toggle for the given display index

Parameters

display_index - the index for the target Looking Glass display

invview - the pointer to the returned inverted views toggle. 0=FALSE, 1=TRUE

Returns

TRUE if successful, FALSE otherwise

See also

get_invview

get_calibration_for_display

get_displays

---

get_ri_for_display

bool get_ri_for_display(unsigned long display_index, int* ri);

returns the red index for the display used with the given display index

Parameters

display_index - the index for the target Looking Glass display

ri - the pointer to the returned red index value (0 or 2)

Returns

TRUE if successful, FALSE otherwise

Note: This function is meant only to provide compatibility with HoloPlay Core SDK

See also

get_ri

get_calibration_for_display

get_displays

---

get_bi_for_display

bool get_bi_for_display(unsigned long display_index, int *bi);

returns the blue index for the display used with the given display index

Parameters

display_index - the index for the target Looking Glass display

bi - the pointer to the returned blue index value (0 or 2)

Returns

TRUE if successful, FALSE otherwise

Note: This function is meant only to provide compatibility with HoloPlay Core SDK

See also

get_bi

get_calibration_for_display

get_displays

---

get_tilt_for_display

bool get_tilt_for_display(unsigned long display_index, float* tilt);

returns the tilt for the display used with the given display index

Parameters

display_index - the index for the target Looking Glass display

tilt - the pointer to the returned tilt value

Returns

TRUE if successful, FALSE otherwise

Note: This function is meant only to provide compatibility with HoloPlay Core SDK

See also

get_tilt

get_calibration_for_display

get_displays

---

get_displayaspect_for_display

bool get_displayaspect_for_display(unsigned long display_index, float* displayaspect);

returns the aspect ratio of the display used with the given display index

Parameters

display_index - the index for the target Looking Glass display

displayaspect - the pointer to the returned aspect ratio

Returns

TRUE if successful, FALSE otherwise

Note: This function is meant only to provide compatibility with HoloPlay Core SDK

See also

get_displayaspect

get_calibration_for_display

get_displays

---

get_fringe_for_display

bool get_fringe_for_display(unsigned long display_index, float* fringe);

returns the fringe value of the display used with the given display index

Parameters

display_index - the index for the target Looking Glass display

fringe - the pointer to the returned fringe value

Returns

TRUE if successful, FALSE otherwise

Note: this function is meant only to provide compatibility with HoloPlay Core SDK

See also

get_fringe

get_calibration_for_display

get_displays

---

get_subp_for_display

bool get_subp_for_display(unsigned long display_index, float* subp);

returns the subpixel size of the display used with the given display index

Parameters

display_index - the index for the target Looking Glass display

subp - the pointer to the returned sub pixel size value

Returns

TRUE if successful, FALSE otherwise

See also

get_subp

---

get_viewcone_for_display

bool get_viewcone_for_display(unsigned long display_index, float* viewcone);

returns the viewcone value for the display product with the given display index

Parameters

display_index - the index for the target Looking Glass display

viewcone - the pointer to the returned viewcone value

Returns

TRUE if successful, FALSE otherwise

See also

get_viewcone

---

get_pitch_for_display

bool get_pitch_for_display(unsigned long display_index, float* pitch);

returns the pitch of the display used with the given display index

Parameters

display_index - the index for the target Looking Glass display

pitch - the pointer to the returned pitch value

Returns

TRUE if successful, FALSE otherwise

Note: This function is meant only to provide compatibility with HoloPlay Core SDK

See also

get_pitch

get_calibration_for_display

get_displays

---

get_center_for_display

bool get_center_for_display(unsigned long display_index, float* center);

returns the center of the display used with the given display index

Parameters

display_index - the index for the target Looking Glass display

center - the pointer to the returned center value

Returns

TRUE if successful, FALSE otherwise

Note: This function is meant only to provide compatibility with HoloPlay Core SDK

See also

get_center

get_calibration_for_display

get_displays

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get_default_quilt_settings_for_display

bool get_default_quilt_settings_for_display(unsigned long display_index, 
                                            float* aspect,
                                            int* quilt_width,
                                            int* quilt_height,
                                            int* quilt_columns,
                                            int* quilt_rows);

Returns the ideal quilt settings for the given display index. The ideal quilt settings are aset of heuristics defined by Looking Glass for each display product.

Parameters

display_index - the index for the target Looking Glass display

aspect - the pointer to the returned aspect value

quilt_width - the pointer to the returned width value

quilt_height - the pointer to the returned height value

quilt_columns - the pointer to the returned quilt columns value

quilt_rows - the pointer to the returned quilt rows value

Returns

FALSE if number_of_serial_wchars is null, TRUE otherwise

See also

get_default_quilt_settings