106 lines
3.8 KiB
C#
106 lines
3.8 KiB
C#
|
using System;
|
|||
|
|
using UnityEngine;
|
|||
|
|
using UnityEngine.Rendering;
|
|||
|
|
|
|||
|
|
namespace sc.terrain.proceduralpainter
|
|||
|
|
{
|
|||
|
|
[Serializable]
|
|||
|
|
public class Modifier : ScriptableObject
|
|||
|
|
{
|
|||
|
|
[HideInInspector]
|
|||
|
|
public bool enabled = true;
|
|||
|
|
[HideInInspector]
|
|||
|
|
public string label;
|
|||
|
|
[HideInInspector]
|
|||
|
|
public BlendMode blendMode;
|
|||
|
|
[HideInInspector]
|
|||
|
|
[Range(0f, 100f)]
|
|||
|
|
public float opacity = 100;
|
|||
|
|
|
|||
|
|
public enum FilterPass
|
|||
|
|
{
|
|||
|
|
Height,
|
|||
|
|
Slope,
|
|||
|
|
Curvature,
|
|||
|
|
TextureMask,
|
|||
|
|
Noise
|
|||
|
|
}
|
|||
|
|
[HideInInspector]
|
|||
|
|
public FilterPass passIndex;
|
|||
|
|
|
|||
|
|
public enum BlendMode
|
|||
|
|
{
|
|||
|
|
Multiply,
|
|||
|
|
Add,
|
|||
|
|
Subtract,
|
|||
|
|
Min,
|
|||
|
|
Max
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
private static int SrcFactorID = Shader.PropertyToID("_SrcFactor");
|
|||
|
|
private static int DstFactorID = Shader.PropertyToID("_DstFactor");
|
|||
|
|
private static int BlendOpID = Shader.PropertyToID("_BlendOp");
|
|||
|
|
private static int OpacityID = Shader.PropertyToID("_Opacity");
|
|||
|
|
|
|||
|
|
public static void SetBlendMode(Material mat, BlendMode mode)
|
|||
|
|
{
|
|||
|
|
//Note: The source is actually the current filter, destination the result from previous filters
|
|||
|
|
//Meaning operations are reversed
|
|||
|
|
|
|||
|
|
switch (mode)
|
|||
|
|
{
|
|||
|
|
case BlendMode.Multiply:
|
|||
|
|
{
|
|||
|
|
mat.SetInt(SrcFactorID, (int)UnityEngine.Rendering.BlendMode.DstColor);
|
|||
|
|
mat.SetInt(DstFactorID, (int)UnityEngine.Rendering.BlendMode.SrcColor);
|
|||
|
|
mat.SetInt(BlendOpID, (int)BlendOp.Multiply);
|
|||
|
|
} break;
|
|||
|
|
case BlendMode.Add:
|
|||
|
|
{
|
|||
|
|
mat.SetInt(SrcFactorID, (int)UnityEngine.Rendering.BlendMode.SrcColor);
|
|||
|
|
mat.SetInt(DstFactorID, (int)UnityEngine.Rendering.BlendMode.DstColor);
|
|||
|
|
mat.SetInt(BlendOpID, (int)BlendOp.Add);
|
|||
|
|
} break;
|
|||
|
|
case BlendMode.Subtract:
|
|||
|
|
{
|
|||
|
|
mat.SetInt(SrcFactorID, (int)UnityEngine.Rendering.BlendMode.SrcColor);
|
|||
|
|
mat.SetInt(DstFactorID, (int)UnityEngine.Rendering.BlendMode.DstColor);
|
|||
|
|
mat.SetInt(BlendOpID, (int)BlendOp.ReverseSubtract);
|
|||
|
|
} break;
|
|||
|
|
case BlendMode.Min:
|
|||
|
|
{
|
|||
|
|
mat.SetInt(SrcFactorID, (int)UnityEngine.Rendering.BlendMode.SrcColor);
|
|||
|
|
mat.SetInt(DstFactorID, (int)UnityEngine.Rendering.BlendMode.DstColor);
|
|||
|
|
mat.SetInt(BlendOpID, (int)BlendOp.Min);
|
|||
|
|
} break;
|
|||
|
|
case BlendMode.Max:
|
|||
|
|
{
|
|||
|
|
mat.SetInt(SrcFactorID, (int)UnityEngine.Rendering.BlendMode.SrcColor);
|
|||
|
|
mat.SetInt(DstFactorID, (int)UnityEngine.Rendering.BlendMode.DstColor);
|
|||
|
|
mat.SetInt(BlendOpID, (int)BlendOp.Max);
|
|||
|
|
} break;
|
|||
|
|
default:
|
|||
|
|
throw new ArgumentOutOfRangeException(nameof(mode), mode, null);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/// <summary>
|
|||
|
|
/// Set any material properties here. Base implementation must be called, it sets the blend mode and opacity
|
|||
|
|
/// </summary>
|
|||
|
|
public virtual void Configure(Material material)
|
|||
|
|
{
|
|||
|
|
SetBlendMode(material, blendMode);
|
|||
|
|
material.SetFloat(OpacityID, opacity * 0.01f);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
public virtual void Execute(RenderTexture target)
|
|||
|
|
{
|
|||
|
|
if (!enabled || opacity == 0) return;
|
|||
|
|
|
|||
|
|
//Debug.Log("<b>Executing:</b> " + this.name + ". SRC: <i>" + source.name + "</i> DEST: <i>" + destination.name + "</i>. Pass: " + passIndex);
|
|||
|
|
|
|||
|
|
Graphics.Blit(null, target, ModifierStack.filterMat, (int)passIndex);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|