ICE can display its canvas, or parts of the canvas, on additional windows.
At some point you will want to route the Canvas from Igloo Core Engine out of your computer, ideally to a really big screen. This can be achieved by configuring one or more Screen windows, and optionally Warping and Blending the output within those windows.
Screen Window Settings
Window Settings are configured in the ScreenWindowSettings.xml, typically found at
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The height of the canvas subsection to be drawn into the window, in normalised coordinates i.e. 0-1
stereoFormat
The stereo output setting for individual windows, The possible values for this tag are:
0 : Top-Bottom
1 : Side-by-Side
2 : Left Eye Only
3 : Right Eye Only
Examples
This example assumes you have one 1920x1080 screen and you want to display the entire canvas on this screen.
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This example assumes you have two screens each 1920x1080, and you want to display the left half of the canvas on Screen 1 and the right half on Screen 2.
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Output Warp
Igloo Warper
The Igloo Warper application can be used to generate Warp & Blending files which are applied to ICE’s Igloo Core Engine’s Output windows.
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Requires Warper version 1.20.x + |
Within the Igloo Warper’s menu navigate to Config > High Performance Warping > ICE I C E > Export Warping file.
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The export may take some time depending on the number of displays and their resolution. Once finished, the Warping files are saved to C:\ProgramData\Igloo Vision\IglooCoreEngine\warping
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This file is not really a bitmap but lookup table for the X,Y coordinates of the warped image.
Screen-edgeBlend.bmp
Canvas Mask
When required, the Igloo Setup Tool will export an additional mask canvasMask.png which is applied to Canvas space rather than Screen space. This file should be moved to
C:\ProgramData\Igloo Vision\IglooCoreEngine\warping
See Igloo Setup for more info on the Igloo Setup tool
Edge Blend to Soften Aliasing
A small edge blend can be used counteract aliasing. Typically, you may see this on the top edge of the Warp after exporting for a cylindrical screen.
In the Warpers blend settings, set the Top Global Gamma to 0
Increase the Top Width setting until the blend covers between 1-5 pixels
Increase the Top Global Gamma until you see a smooth transition to black
Repeat for all Projectors
Scalable Warp & Blend
Igloo Core Engine supports warp and blend through the integration of the Scalable SDK. Scalable Display Technologies
Igloo Core Engine will load the Scalable calibration from the standard Scalable export location,
C:\ProgramData\Scalable Display\DEI\calibration