Commands/Shaders/Get-OBSAspectRatioShader.ps1

function Get-OBSAspectRatioShader {

[Alias('Set-OBSAspectRatioShader','Add-OBSAspectRatioShader')]
param(
# Set the ViewProj of OBSAspectRatioShader
[ComponentModel.DefaultBindingProperty('ViewProj')]
[Single[][]]
$ViewProj,
# Set the image of OBSAspectRatioShader
[ComponentModel.DefaultBindingProperty('image')]
[String]
$Image,
# Set the elapsed_time of OBSAspectRatioShader
[Alias('elapsed_time')]
[ComponentModel.DefaultBindingProperty('elapsed_time')]
[Single]
$ElapsedTime,
# Set the uv_offset of OBSAspectRatioShader
[Alias('uv_offset')]
[ComponentModel.DefaultBindingProperty('uv_offset')]
[Single[]]
$UvOffset,
# Set the uv_scale of OBSAspectRatioShader
[Alias('uv_scale')]
[ComponentModel.DefaultBindingProperty('uv_scale')]
[Single[]]
$UvScale,
# Set the uv_pixel_interval of OBSAspectRatioShader
[Alias('uv_pixel_interval')]
[ComponentModel.DefaultBindingProperty('uv_pixel_interval')]
[Single[]]
$UvPixelInterval,
# Set the rand_f of OBSAspectRatioShader
[Alias('rand_f')]
[ComponentModel.DefaultBindingProperty('rand_f')]
[Single]
$RandF,
# Set the uv_size of OBSAspectRatioShader
[Alias('uv_size')]
[ComponentModel.DefaultBindingProperty('uv_size')]
[Single[]]
$UvSize,
# Set the borderColor of OBSAspectRatioShader
[ComponentModel.DefaultBindingProperty('borderColor')]
[String]
$BorderColor,
# Set the notes of OBSAspectRatioShader
[ComponentModel.DefaultBindingProperty('notes')]
[String]
$Notes,
# The name of the source. This must be provided when adding an item for the first time
[Parameter(ValueFromPipelineByPropertyName)]
[Alias('SceneItemName')]
[String]
$SourceName,
# The name of the filter. If this is not provided, this will default to the shader name.
[Parameter(ValueFromPipelineByPropertyName)]
[String]
$FilterName,
# The inline value of the shader. This will normally be provided as a default parameter, based off of the name.
[Alias('ShaderContent')]
[String]
$ShaderText,
# If set, will force the recreation of a shader that already exists
[Management.Automation.SwitchParameter]
$Force,
# If set, will pass thru the commands that would be sent to OBS (these can be sent at any time with Send-OBS)
[Management.Automation.SwitchParameter]
$PassThru,
# If set, will not wait for a response from OBS (this will be faster, but will not return anything)
[Management.Automation.SwitchParameter]
$NoResponse,
# If set, use the shader elapsed time, instead of the OBS system elapsed time
[ComponentModel.DefaultBindingProperty('use_shader_elapsed_time')]
[Management.Automation.SwitchParameter]
$UseShaderTime
)


process {
$shaderName = 'aspect_ratio'
$ShaderNoun = 'OBSAspectRatioShader'
if (-not $psBoundParameters['ShaderText']) {    
    $psBoundParameters['ShaderText'] = $ShaderText = '
//Converted to OpenGL by Q-mii & Exeldro March 8, 2022 - DO NOT USE THIS IT WAS NEVER COMPLETED
uniform float4x4 ViewProj;
uniform texture2d image;

uniform float elapsed_time;
uniform float2 uv_offset;
uniform float2 uv_scale;
uniform float2 uv_pixel_interval;
uniform float rand_f;
uniform float2 uv_size;


// variables
uniform float4 borderColor = {0,0,0,0};
float targetaspect = 1.7777777777777777777777f; //16.0f / 9.0f;
uniform string notes;

sampler_state textureSampler {
    Filter = Linear;
    AddressU = Border;
    AddressV = Border;
    BorderColor = 00000000;
};

struct VertData {
    float4 pos : POSITION;
    float2 uv : TEXCOORD0;
};

VertData mainTransform(VertData v_in)
{
    VertData vert_out;
    
    vert_out.pos = mul(float4(v_in.pos.xyz, 1.0), ViewProj);
    vert_out.uv = v_in.uv * uv_scale + uv_offset;

    float2 hw = uv_scale;
    // determine the game window''s current aspect ratio
    float windowaspect = hw.x / hw.y;

    // current viewport height should be scaled by this amount
    float scaleheight = windowaspect / targetaspect;


    // if scaled height is less than current height, add letterbox
    if (scaleheight < 1.0f)
    {
        Rect rect = camera.rect;

        rect.width = 1.0f;
        rect.height = scaleheight;
        rect.x = 0;
        rect.y = (1.0f - scaleheight) / 2.0f;

        camera.rect = rect;
    }
    else // add pillarbox
    {
        float scalewidth = 1.0f / scaleheight;

        Rect rect = camera.rect;

        rect.width = scalewidth;
        rect.height = 1.0f;
        rect.x = (1.0f - scalewidth) / 2.0f;
        rect.y = 0;

        camera.rect = rect;
    }
    return vert_out;
}

float4 mainImage(VertData v_in) : TARGET
{
    if (v_in.uv.x < 0 || v_in.uv.x > 1 || v_in.uv.y < 0 || v_in.uv.y > 1)
    {
        return borderColor;
    }
    else
    {
        return image.Sample(textureSampler, v_in.uv);
    }
}

technique Draw
{
    pass
    {
        vertex_shader = mainTransform(v_in);
        pixel_shader = mainImage(v_in);
    }
}

'

}
$MyVerb, $myNoun = $MyInvocation.InvocationName -split '-',2
if (-not $myNoun) {
    $myNoun = $myVerb
    $myVerb = 'Get'    
}
switch -regex ($myVerb) {
    Get {
        $FilterNamePattern = "(?>$(
            if ($FilterName) {
                [Regex]::Escape($FilterName)
            }
            else {
                [Regex]::Escape($ShaderNoun -replace '^OBS' -replace 'Shader$'),[Regex]::Escape($shaderName) -join '|'
            }
        ))"

        if ($SourceName) {
            Get-OBSInput | 
                Where-Object InputName -eq $SourceName |
                Get-OBSSourceFilterList |
                Where-Object FilterName -Match $FilterNamePattern
        } else {
            $obs.Inputs |
                Get-OBSSourceFilterList |
                Where-Object FilterName -Match $FilterNamePattern
        }        
    }
    'Remove' {
        if ($SourceName) {
            Get-OBSInput | 
                Where-Object InputName -eq $SourceName |
                Get-OBSSourceFilterList |
                Where-Object FilterName -Match $FilterNamePattern |
                Remove-OBSSourceFilter
        }
    }
    '(?>Add|Set)' {
        $ShaderSettings = [Ordered]@{}
        :nextParameter foreach ($parameterMetadata in $MyInvocation.MyCommand.Parameters[@($psBoundParameters.Keys)]) {
            foreach ($parameterAttribute in $parameterMetadata.Attributes) {
                if ($parameterAttribute -isnot [ComponentModel.DefaultBindingPropertyAttribute]) { continue }
                $ShaderSettings[$parameterAttribute.Name] = $PSBoundParameters[$parameterMetadata.Name]
                if ($ShaderSettings[$parameterAttribute.Name] -is [switch]) {
                    $ShaderSettings[$parameterAttribute.Name] = $ShaderSettings[$parameterAttribute.Name] -as [bool]
                }
                continue nextParameter
            }            
        }

        if (-not $PSBoundParameters['FilterName']) {
            $filterName = $PSBoundParameters['FilterName'] = $shaderName
        }

        $ShaderFilterSplat = [Ordered]@{
            ShaderSetting = $ShaderSettings
            FilterName = $FilterName
            SourceName = $SourceName
        }        

        foreach ($CarryOnParameter in "PassThru", "NoResponse","Force") {
            if ($PSBoundParameters.ContainsKey($CarryOnParameter)) {
                $ShaderFilterSplat[$CarryOnParameter] = $PSBoundParameters[$CarryOnParameter]
            }
        }

        if (-not $script:CachedShaderFilesFromCommand) {
            $script:CachedShaderFilesFromCommand = @{}
        }

        if ($Home -and -not $script:CachedShaderFilesFromCommand[$shaderName]) {
            $MyObsPowerShellPath = Join-Path $home ".obs-powershell"
            $ThisShaderPath = Join-Path $MyObsPowerShellPath "$shaderName.shader"
            $shaderText | Set-Content -LiteralPath $ThisShaderPath
            $script:CachedShaderFilesFromCommand[$shaderName] = Get-Item -LiteralPath $ThisShaderPath
        }
        if ($script:CachedShaderFilesFromCommand[$shaderName]) {
            $ShaderFilterSplat.ShaderFile = $script:CachedShaderFilesFromCommand[$shaderName].FullName
        } else {
            $ShaderFilterSplat.ShaderText = $shaderText
        }        

        if ($myVerb -eq 'Add') {                        
            Add-OBSShaderFilter @ShaderFilterSplat
        } else {
            Set-OBSShaderFilter @ShaderFilterSplat
        }
    }
}

}


}