Commands/Shaders/Get-OBSLuminanceAlphaShader.ps1
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function Get-OBSLuminanceAlphaShader { [Alias('Set-OBSLuminanceAlphaShader','Add-OBSLuminanceAlphaShader')] param( # Set the ViewProj of OBSLuminanceAlphaShader [ComponentModel.DefaultBindingProperty('ViewProj')] [Single[][]] $ViewProj, # Set the image of OBSLuminanceAlphaShader [ComponentModel.DefaultBindingProperty('image')] [String] $Image, # Set the elapsed_time of OBSLuminanceAlphaShader [Alias('elapsed_time')] [ComponentModel.DefaultBindingProperty('elapsed_time')] [Single] $ElapsedTime, # Set the uv_offset of OBSLuminanceAlphaShader [Alias('uv_offset')] [ComponentModel.DefaultBindingProperty('uv_offset')] [Single[]] $UvOffset, # Set the uv_scale of OBSLuminanceAlphaShader [Alias('uv_scale')] [ComponentModel.DefaultBindingProperty('uv_scale')] [Single[]] $UvScale, # Set the uv_pixel_interval of OBSLuminanceAlphaShader [Alias('uv_pixel_interval')] [ComponentModel.DefaultBindingProperty('uv_pixel_interval')] [Single[]] $UvPixelInterval, # Set the rand_f of OBSLuminanceAlphaShader [Alias('rand_f')] [ComponentModel.DefaultBindingProperty('rand_f')] [Single] $RandF, # Set the uv_size of OBSLuminanceAlphaShader [Alias('uv_size')] [ComponentModel.DefaultBindingProperty('uv_size')] [Single[]] $UvSize, # Set the color_matrix of OBSLuminanceAlphaShader [Alias('color_matrix')] [ComponentModel.DefaultBindingProperty('color_matrix')] [Single[][]] $ColorMatrix, # Set the color of OBSLuminanceAlphaShader [ComponentModel.DefaultBindingProperty('color')] [String] $Color, # Set the mul_val of OBSLuminanceAlphaShader [Alias('mul_val')] [ComponentModel.DefaultBindingProperty('mul_val')] [Single] $MulVal, # Set the add_val of OBSLuminanceAlphaShader [Alias('add_val')] [ComponentModel.DefaultBindingProperty('add_val')] [Single] $AddVal, # Set the level of OBSLuminanceAlphaShader [ComponentModel.DefaultBindingProperty('level')] [Single] $Level, # Set the invertAlphaChannel of OBSLuminanceAlphaShader [ComponentModel.DefaultBindingProperty('invertAlphaChannel')] [Management.Automation.SwitchParameter] $InvertAlphaChannel, # 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 = 'luminance_alpha' $ShaderNoun = 'OBSLuminanceAlphaShader' if (-not $psBoundParameters['ShaderText']) { $psBoundParameters['ShaderText'] = $ShaderText = ' // Luminance Alpha Effect By Charles Fettinger (https://github.com/Oncorporation) 2/2019 //Converted to OpenGL by Q-mii & Exeldro February 22, 2022 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; uniform float4x4 color_matrix; uniform float4 color; uniform float mul_val< string label = "Mulitply"; string widget_type = "slider"; float minimum = 0.0; float maximum = 10.0; float step = 0.001; > = 1.0; uniform float add_val< string label = "Add"; string widget_type = "slider"; float minimum = -10.0; float maximum = 10.0; float step = 0.001; > = 0.0; uniform float level< string label = "Level"; string widget_type = "slider"; float minimum = 0.0; float maximum = 10.0; float step = 0.001; > =1.0; uniform bool invertAlphaChannel; sampler_state textureSampler { Filter = Linear; AddressU = Border; AddressV = Border; BorderColor = 00000000; }; struct VertDataIn { float4 pos : POSITION; float2 uv : TEXCOORD0; }; struct VertDataOut { float4 pos : POSITION; float2 uv : TEXCOORD0; float2 uv2 : TEXCOORD1; }; VertDataOut mainTransform(VertDataIn v_in) { VertDataOut vert_out; vert_out.pos = mul(float4(v_in.pos.xyz, 1.0 ), ViewProj); vert_out.uv = v_in.uv * mul_val + add_val; vert_out.uv2 = v_in.uv ; return vert_out; } /*float3 GetLuminance(float4 rgba) { float red = rbga.r; float green = rgba.g; float blue = rgba.b; return (.299 * red) + (.587 * green) + (.114 * blue); }*/ float4 PSAlphaMaskRGBA(VertDataOut v_in) : TARGET { float4 rgba = image.Sample(textureSampler, v_in.uv) ; if (rgba.a > 0.0) { float intensity = rgba.r * color.r * 0.299 + rgba.g * color.g * 0.587 + rgba.b * color.b * 0.114; if (invertAlphaChannel) { intensity = 1.0 - intensity; } rgba *= color; rgba.a = clamp((intensity * level), 0.0, 1.0); } return rgba; } technique Draw { pass { vertex_shader = mainTransform(v_in); pixel_shader = PSAlphaMaskRGBA(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 } } } } } |