77 lines
2.5 KiB
C#
77 lines
2.5 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 System;
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namespace AmplifyShaderEditor
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{
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[Serializable]
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[NodeAttributes( "Compute Screen Pos", "Camera And Screen", "Computes texture coordinate for doing a screenspace-mapped texture sample. Input is clip space position" )]
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public sealed class ComputeScreenPosHlpNode : HelperParentNode
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{
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[SerializeField]
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private bool m_normalize = false;
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private string NormalizeStr = "Normalize";
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private readonly string[] NormalizeOps =
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{ "{0} = {0} / {0}.w;",
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"{0}.z = ( UNITY_NEAR_CLIP_VALUE >= 0 ) ? {0}.z : {0}.z* 0.5 + 0.5;"
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};
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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 = "ComputeScreenPos";
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m_funcHDFormatOverride = "ComputeScreenPos( {0} , _ProjectionParams.x )";
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m_inputPorts[ 0 ].ChangeType( WirePortDataType.FLOAT4, false );
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m_outputPorts[ 0 ].ChangeType( WirePortDataType.FLOAT4, false );
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m_outputPorts[ 0 ].Name = "XYZW";
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m_autoWrapProperties = true;
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m_previewShaderGUID = "97bd4895d847d764eb21d2bf7aa13671";
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}
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public override void SetPreviewInputs()
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{
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base.SetPreviewInputs();
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m_previewMaterialPassId = m_normalize ? 1 : 0;
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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 = "computeScreenPos" + 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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m_normalize = EditorGUILayoutToggle( NormalizeStr, m_normalize );
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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 = base.GenerateShaderForOutput( outputId, ref dataCollector, ignoreLocalvar );
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if( m_normalize )
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{
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dataCollector.AddLocalVariable( UniqueId, string.Format( NormalizeOps[ 0 ], m_localVarName ) );
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dataCollector.AddLocalVariable( UniqueId, string.Format( NormalizeOps[ 1 ], m_localVarName ) );
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}
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return result;
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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_normalize );
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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() > 15404 )
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{
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m_normalize = Convert.ToBoolean( GetCurrentParam( ref nodeParams ) );
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}
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}
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}
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}
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