123 lines
4.5 KiB
C#
123 lines
4.5 KiB
C#
// Amplify Shader Editor - Visual Shader Editing Tool
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// Copyright (c) Amplify Creations, Lda <info@amplify.pt>
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using UnityEngine;
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using UnityEditor;
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using System;
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namespace AmplifyShaderEditor
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{
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[Serializable]
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[NodeAttributes( "Gamma To Linear", "Image Effects", "Converts color from gamma space to linear space" )]
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public sealed class GammaToLinearNode : HelperParentNode
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{
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public readonly static string[] ModeListStr = { "Fast sRGB to Linear", "Exact sRGB to Linear" };
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public readonly static int[] ModeListInt = { 0, 1 };
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public readonly static string[] ModeListStrLW = { "Fast sRGB to Linear", "Exact sRGB to Linear", "Gamma 2.0 to Linear", "Gamma 2.2 to Linear" };
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public readonly static int[] ModeListIntLW = { 0, 1, 2, 3 };
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[SerializeField]
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public int m_selectedMode = 0;
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protected override void CommonInit( int uniqueId )
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{
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base.CommonInit( uniqueId );
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m_funcType = "GammaToLinearSpace";
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m_inputPorts[ 0 ].ChangeType( WirePortDataType.FLOAT3, false );
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m_inputPorts[ 0 ].Name = "RGB";
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m_outputPorts[ 0 ].ChangeType( WirePortDataType.FLOAT3, false );
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m_autoWrapProperties = true;
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m_previewShaderGUID = "e82a888a6ebdb1443823aafceaa051b9";
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m_textLabelWidth = 120;
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}
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protected override void OnUniqueIDAssigned()
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{
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base.OnUniqueIDAssigned();
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m_localVarName = "gammaToLinear" + OutputId;
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}
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public override void DrawProperties()
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{
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base.DrawProperties();
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if( ContainerGraph.IsSRP )
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{
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m_selectedMode = EditorGUILayoutIntPopup( "Mode", m_selectedMode, ModeListStrLW, ModeListIntLW );
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EditorGUILayout.HelpBox( "Fast sRGB: fast approximation from sRGB to Linear\n\nExact sRGB: a more expensive but exact calculation from sRGB to Linear.\n\nGamma 2.0: crude approximation from Gamma to Linear using a power of 2.0 gamma value\n\nGamma 2.2: an approximation from Gamma to Linear using a power of 2.2 gamma value", MessageType.None );
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}
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else
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{
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m_selectedMode = EditorGUILayoutIntPopup( "Mode", m_selectedMode, ModeListStr, ModeListInt );
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EditorGUILayout.HelpBox( "Fast sRGB: fast approximation from sRGB to Linear\n\nExact sRGB: a more expensive but exact calculation from sRGB to Linear.", MessageType.None );
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}
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}
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public override string GenerateShaderForOutput( int outputId, ref MasterNodeDataCollector dataCollector, bool ignoreLocalvar )
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{
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string result = m_inputPorts[ 0 ].GeneratePortInstructions( ref dataCollector );
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if( !dataCollector.IsSRP )
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{
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m_selectedMode = Mathf.Min( m_selectedMode, 1 );
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if( m_selectedMode == 1 )
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{
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dataCollector.AddLocalVariable( UniqueId, "half3 " + m_localVarName + " = " + result + ";" );
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dataCollector.AddLocalVariable( UniqueId, m_localVarName + " = half3( GammaToLinearSpaceExact(" + m_localVarName + ".r), GammaToLinearSpaceExact(" + m_localVarName + ".g), GammaToLinearSpaceExact(" + m_localVarName + ".b) );" );
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return m_localVarName;
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}
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return base.GenerateShaderForOutput( outputId, ref dataCollector, ignoreLocalvar );
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}
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else
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{
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dataCollector.AddToIncludes( UniqueId, TemplateHelperFunctions.CoreCommonLib );
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dataCollector.AddToIncludes( UniqueId, TemplateHelperFunctions.CoreColorLib );
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switch( m_selectedMode )
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{
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default:
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case 0:
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m_funcLWFormatOverride = "FastSRGBToLinear( {0} )";
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m_funcHDFormatOverride = "FastSRGBToLinear( {0} )";
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break;
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case 1:
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m_funcLWFormatOverride = "SRGBToLinear( {0} )";
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m_funcHDFormatOverride = "SRGBToLinear( {0} )";
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break;
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case 2:
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m_funcLWFormatOverride = "Gamma20ToLinear( {0} )";
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m_funcHDFormatOverride = "Gamma20ToLinear( {0} )";
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break;
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case 3:
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m_funcLWFormatOverride = "Gamma22ToLinear( {0} )";
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m_funcHDFormatOverride = "Gamma22ToLinear( {0} )";
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break;
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}
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return base.GenerateShaderForOutput( outputId, ref dataCollector, ignoreLocalvar );
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}
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}
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public override void WriteToString( ref string nodeInfo, ref string connectionsInfo )
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{
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base.WriteToString( ref nodeInfo, ref connectionsInfo );
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IOUtils.AddFieldValueToString( ref nodeInfo, m_selectedMode );
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}
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public override void ReadFromString( ref string[] nodeParams )
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{
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base.ReadFromString( ref nodeParams );
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if( UIUtils.CurrentShaderVersion() > 11003 && UIUtils.CurrentShaderVersion() <= 14503 )
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{
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bool fast = Convert.ToBoolean( GetCurrentParam( ref nodeParams ) );
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if( fast )
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m_selectedMode = 1;
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}
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if( UIUtils.CurrentShaderVersion() > 14503 )
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{
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m_selectedMode = Convert.ToInt32( GetCurrentParam( ref nodeParams ) );
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}
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}
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}
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}
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