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mbucchiambucchia
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First version of the layer.
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‎.gitignore‎

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.vs/*
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packages/*
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x64/*
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*.vcxproj.user

‎Install-Layer.ps1‎

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$JsonPath = Join-Path "$PSScriptRoot" "XR_APILAYER_NOVENDOR_fov_modifier.json"
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reg ADD "HKLM\Software\Khronos\OpenXR\1\ApiLayers\Implicit" /v $JsonPath /f /t REG_DWORD /d 0

‎README.md‎

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# FOV modifier OpenXR API Layer
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## Setup
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1. Create a folder in `%ProgramFiles%`. It's important to make it in `%ProgramFiles%` so that UWP applications can access it! For example: `C:\Program Files\OpenXR-API-Layers`.
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2. Place `XR_APILAYER_NOVENDOR_fov_modifier.json`, `XR_APILAYER_NOVENDOR_fov_modifier.dll`, `Install-Layer.ps1` and `Uninstall-Layer.ps1` in the folder created above.
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3. Run the script `Install-Layer.ps1` **as Administrator**.
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4. Start the OpenXR Developer Tools for Windows Mixed Reality, under the *System Status* tab, scroll down to *API Layers*. A layer named `XR_APILAYER_NOVENDOR_fov_modifier` should be listed.
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## Removal
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1. Go to the folder where the API layer is installed. For example: `C:\Program Files\OpenXR-API-Layers`.
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2. Run the script `Uninstall-Layer.ps1` **as Administrator**.
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3. Start the OpenXR Developer Tools for Windows Mixed Reality, under the *System Status* tab, scroll down to *API Layers*. There should be no layer named `XR_APILAYER_NOVENDOR_fov_modifier`.
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## App configuration
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1. First, retrieve the name that the application passes to OpenXR. In order to do that, run the application while the API layer is enabled.
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2. Locate the log file for the layer. It will typically be `%LocalAppData%\XR_APILAYER_NOVENDOR_fov_modifier.log`.
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3. In the log file, search for the first line saying "Could not load config for ...":
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```
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dllHome is "C:\Program Files\OpenXR-API-Layers"
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XR_APILAYER_NOVENDOR_fov_modifier layer is active
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Could not load config for "FS2020"
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Could not load config for "Zouna"
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Using FOV for left 1.000 1.000 1.000 1.000 and right 1.000 1.000 1.000
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```
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4. In the same folder where `XR_APILAYER_NOVENDOR_fov_modifier.json` was copied during setup, create a file named after the application, and with the extension `.cfg`. For example `C:\Program Files\OpenXR-API-Layers\FS2020.cfg`.
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In this file, set the factor for each FOV angle that needs to be changed. The factor is equal to the percentage divided by 100. This means that 0.5 is 50%, and 1 is 100%.
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```
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left.up=0.95
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left.down=0.95
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left.right=0.9
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right.up=0.95
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right.down=0.95
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right.left=0.9
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```
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In the example above, `left.left` and `right.right` were left out and will assume their default value of 1 (100%).
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5. When running the application, the changes should take affect. Inspect the log file if it needs to be confirmed:
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```
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dllHome is "C:\Program Files\OpenXR-API-Layers"
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XR_APILAYER_NOVENDOR_fov_modifier layer is active
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Loading config for "FS2020"
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Using FOV for left 0.950 0.950 1.000 0.900 and right 0.950 0.950 0.900 1.000
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```

‎Uninstall-Layer.ps1‎

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$JsonPath = Join-Path "$PSScriptRoot" "XR_APILAYER_NOVENDOR_fov_modifier.json"
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reg DELETE "HKLM\Software\Khronos\OpenXR\1\ApiLayers\Implicit" /v "$JsonPath" /f

‎XR_APILAYER_NOVENDOR_fov_modifier.json‎

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{
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"file_format_version" : "1.0.0",
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"api_layer": {
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"name": "XR_APILAYER_NOVENDOR_fov_modifier",
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"library_path": ".\\XR_APILAYER_NOVENDOR_fov_modifier.dll",
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"api_version": "1.0",
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"implementation_version": "1",
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"description": "OpenXR FOV modifier API layer",
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"functions": {
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"xrNegotiateLoaderApiLayerInterface": "FOVModifier_xrNegotiateLoaderApiLayerInterface"
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},
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"disable_environment": "DISABLE_XR_APILAYER_NOVENDOR_FOV_MODIFIER"
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}
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}

‎XR_APILAYER_NOVENDOR_fov_modifier.sln‎

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Microsoft Visual Studio Solution File, Format Version 12.00
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# Visual Studio Version 16
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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GlobalSection(ProjectConfigurationPlatforms) = postSolution
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SolutionGuid = {0B3F51AB-1A6D-4C57-881A-12465ACE4E6A}
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‎XR_APILAYER_NOVENDOR_fov_modifier.vcxproj‎

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<?xml version="1.0" encoding="utf-8"?>
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<ProjectGuid>{92e50b91-2fa3-48a0-b7f7-e04d7790e15b}</ProjectGuid>
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<RootNamespace>XRAPILAYERNOVENDORfovmodifier</RootNamespace>
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‎XR_APILAYER_NOVENDOR_fov_modifier.vcxproj.filters‎

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