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using System;
using UnityEngine;
using UnityEngine.Rendering;
namespace UniGLTF.UniUnlit
{
public enum UniUnlitRenderMode
{
Opaque = 0,
Cutout = 1,
Transparent = 2,
}
public enum UniUnlitCullMode
{
Off = 0,
// Front = 1,
Back = 2,
}
public enum UniUnlitVertexColorBlendOp
{
None = 0,
Multiply = 1,
}
public static class Utils
{
public const string ShaderName = "UniGLTF/UniUnlit";
public const string PropNameMainTex = "_MainTex";
public const string PropNameColor = "_Color";
public const string PropNameCutoff = "_Cutoff";
public const string PropNameBlendMode = "_BlendMode";
public const string PropNameCullMode = "_CullMode";
[Obsolete("Use PropNameVColBlendMode")]
public const string PropeNameVColBlendMode = PropNameVColBlendMode;
public const string PropNameVColBlendMode = "_VColBlendMode";
public const string PropNameSrcBlend = "_SrcBlend";
public const string PropNameDstBlend = "_DstBlend";
public const string PropNameZWrite = "_ZWrite";
public const string PropNameStandardShadersRenderMode = "_Mode";
public const string KeywordAlphaTestOn = "_ALPHATEST_ON";
public const string KeywordAlphaBlendOn = "_ALPHABLEND_ON";
public const string KeywordVertexColMul = "_VERTEXCOL_MUL";
public const string TagRenderTypeKey = "RenderType";
public const string TagRenderTypeValueOpaque = "Opaque";
public const string TagRenderTypeValueTransparentCutout = "TransparentCutout";
public const string TagRenderTypeValueTransparent = "Transparent";
public static void SetRenderMode(Material material, UniUnlitRenderMode mode)
{
material.SetInt(PropNameBlendMode, (int)mode);
}
public static void SetCullMode(Material material, UniUnlitCullMode mode)
{
material.SetInt(PropNameCullMode, (int)mode);
}
public static void SetVColBlendMode(Material material, UniUnlitVertexColorBlendOp mode)
{
material.SetInt(PropNameVColBlendMode, (int)mode);
}
public static UniUnlitRenderMode GetRenderMode(Material material)
{
return (UniUnlitRenderMode)material.GetInt(PropNameBlendMode);
}
public static UniUnlitCullMode GetCullMode(Material material)
{
return (UniUnlitCullMode)material.GetInt(PropNameCullMode);
}
public static UniUnlitVertexColorBlendOp GetVColBlendMode(Material material)
{
return (UniUnlitVertexColorBlendOp)material.GetInt(PropNameVColBlendMode);
}
/// <summary>
/// Validate target material's UniUnlitRenderMode, UniUnlitVertexColorBlendOp.
/// Set appropriate hidden properties & keywords.
/// This will change RenderQueue independent to UniUnlitRenderMode if isRenderModeChangedByUser is true.
/// </summary>
/// <param name="material">Target material</param>
/// <param name="isRenderModeChangedByUser">Is changed by user</param>
public static void ValidateProperties(Material material, bool isRenderModeChangedByUser = false)
{
SetupBlendMode(material, (UniUnlitRenderMode)material.GetFloat(PropNameBlendMode),
isRenderModeChangedByUser);
SetupVertexColorBlendOp(material, (UniUnlitVertexColorBlendOp)material.GetFloat(PropNameVColBlendMode));
}
private static void SetupBlendMode(Material material, UniUnlitRenderMode renderMode,
bool isRenderModeChangedByUser = false)
{
switch (renderMode)
{
case UniUnlitRenderMode.Opaque:
material.SetOverrideTag(TagRenderTypeKey, TagRenderTypeValueOpaque);
material.SetInt(PropNameSrcBlend, (int)BlendMode.One);
material.SetInt(PropNameDstBlend, (int)BlendMode.Zero);
material.SetInt(PropNameZWrite, 1);
SetKeyword(material, KeywordAlphaTestOn, false);
SetKeyword(material, KeywordAlphaBlendOn, false);
if (isRenderModeChangedByUser) material.renderQueue = -1;
break;
case UniUnlitRenderMode.Cutout:
material.SetOverrideTag(TagRenderTypeKey, TagRenderTypeValueTransparentCutout);
material.SetInt(PropNameSrcBlend, (int)BlendMode.One);
material.SetInt(PropNameDstBlend, (int)BlendMode.Zero);
material.SetInt(PropNameZWrite, 1);
SetKeyword(material, KeywordAlphaTestOn, true);
SetKeyword(material, KeywordAlphaBlendOn, false);
if (isRenderModeChangedByUser) material.renderQueue = (int)RenderQueue.AlphaTest;
break;
case UniUnlitRenderMode.Transparent:
material.SetOverrideTag(TagRenderTypeKey, TagRenderTypeValueTransparent);
material.SetInt(PropNameSrcBlend, (int)BlendMode.SrcAlpha);
material.SetInt(PropNameDstBlend, (int)BlendMode.OneMinusSrcAlpha);
material.SetInt(PropNameZWrite, 0);
SetKeyword(material, KeywordAlphaTestOn, false);
SetKeyword(material, KeywordAlphaBlendOn, true);
if (isRenderModeChangedByUser) material.renderQueue = (int)RenderQueue.Transparent;
break;
}
}
private static void SetupVertexColorBlendOp(Material material, UniUnlitVertexColorBlendOp vColBlendOp)
{
switch (vColBlendOp)
{
case UniUnlitVertexColorBlendOp.None:
SetKeyword(material, KeywordVertexColMul, false);
break;
case UniUnlitVertexColorBlendOp.Multiply:
SetKeyword(material, KeywordVertexColMul, true);
break;
}
}
private static void SetKeyword(Material mat, string keyword, bool required)
{
if (required)
mat.EnableKeyword(keyword);
else
mat.DisableKeyword(keyword);
}
}
}
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