[FIX] Temp Update on Material Assignment (#420)

* Temp Update on Material Assignment

Previously it was shader assignment by request or iterative order from URP to Unlit, but LLM usually assign Standard in a URP setting.

This small fix introduce the helper to resolve some of the conflicts, while give warnings in the log to show if the user is creating a shader in a non-compatible setting.

* Update RenderPipelineUtility.cs
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Shutong Wu 2025-12-03 00:39:38 -05:00 committed by GitHub
parent 84f7b855e8
commit eb9327c06a
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3 changed files with 223 additions and 10 deletions

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@ -0,0 +1,195 @@
using System;
using UnityEngine;
using UnityEngine.Rendering;
namespace MCPForUnity.Editor.Helpers
{
internal static class RenderPipelineUtility
{
internal enum PipelineKind
{
BuiltIn,
Universal,
HighDefinition,
Custom
}
private static readonly string[] BuiltInLitShaders = { "Standard", "Legacy Shaders/Diffuse" };
private static readonly string[] BuiltInUnlitShaders = { "Unlit/Color", "Unlit/Texture" };
private static readonly string[] UrpLitShaders = { "Universal Render Pipeline/Lit", "Universal Render Pipeline/Simple Lit" };
private static readonly string[] UrpUnlitShaders = { "Universal Render Pipeline/Unlit" };
private static readonly string[] HdrpLitShaders = { "HDRP/Lit", "High Definition Render Pipeline/Lit" };
private static readonly string[] HdrpUnlitShaders = { "HDRP/Unlit", "High Definition Render Pipeline/Unlit" };
internal static PipelineKind GetActivePipeline()
{
var asset = GraphicsSettings.currentRenderPipeline;
if (asset == null)
{
return PipelineKind.BuiltIn;
}
var typeName = asset.GetType().FullName ?? string.Empty;
if (typeName.IndexOf("HighDefinition", StringComparison.OrdinalIgnoreCase) >= 0 ||
typeName.IndexOf("HDRP", StringComparison.OrdinalIgnoreCase) >= 0)
{
return PipelineKind.HighDefinition;
}
if (typeName.IndexOf("Universal", StringComparison.OrdinalIgnoreCase) >= 0 ||
typeName.IndexOf("URP", StringComparison.OrdinalIgnoreCase) >= 0)
{
return PipelineKind.Universal;
}
return PipelineKind.Custom;
}
internal static Shader ResolveShader(string requestedNameOrAlias)
{
var pipeline = GetActivePipeline();
if (!string.IsNullOrWhiteSpace(requestedNameOrAlias))
{
var alias = requestedNameOrAlias.Trim();
var aliasMatch = ResolveAlias(alias, pipeline);
if (aliasMatch != null)
{
WarnIfPipelineMismatch(aliasMatch.name, pipeline);
return aliasMatch;
}
var direct = Shader.Find(alias);
if (direct != null)
{
WarnIfPipelineMismatch(direct.name, pipeline);
return direct;
}
McpLog.Warn($"Shader '{alias}' not found. Falling back to {pipeline} defaults.");
}
var fallback = ResolveDefaultLitShader(pipeline)
?? ResolveDefaultLitShader(PipelineKind.BuiltIn)
?? Shader.Find("Unlit/Color");
if (fallback != null)
{
WarnIfPipelineMismatch(fallback.name, pipeline);
}
return fallback;
}
internal static Shader ResolveDefaultLitShader(PipelineKind pipeline)
{
return pipeline switch
{
PipelineKind.HighDefinition => TryFindShader(HdrpLitShaders) ?? TryFindShader(UrpLitShaders),
PipelineKind.Universal => TryFindShader(UrpLitShaders) ?? TryFindShader(HdrpLitShaders),
PipelineKind.Custom => TryFindShader(BuiltInLitShaders) ?? TryFindShader(UrpLitShaders) ?? TryFindShader(HdrpLitShaders),
_ => TryFindShader(BuiltInLitShaders) ?? Shader.Find("Unlit/Color")
};
}
internal static Shader ResolveDefaultUnlitShader(PipelineKind pipeline)
{
return pipeline switch
{
PipelineKind.HighDefinition => TryFindShader(HdrpUnlitShaders) ?? TryFindShader(UrpUnlitShaders) ?? TryFindShader(BuiltInUnlitShaders),
PipelineKind.Universal => TryFindShader(UrpUnlitShaders) ?? TryFindShader(HdrpUnlitShaders) ?? TryFindShader(BuiltInUnlitShaders),
PipelineKind.Custom => TryFindShader(BuiltInUnlitShaders) ?? TryFindShader(UrpUnlitShaders) ?? TryFindShader(HdrpUnlitShaders),
_ => TryFindShader(BuiltInUnlitShaders)
};
}
private static Shader ResolveAlias(string alias, PipelineKind pipeline)
{
if (string.Equals(alias, "lit", StringComparison.OrdinalIgnoreCase) ||
string.Equals(alias, "default", StringComparison.OrdinalIgnoreCase) ||
string.Equals(alias, "default_lit", StringComparison.OrdinalIgnoreCase))
{
return ResolveDefaultLitShader(pipeline);
}
if (string.Equals(alias, "unlit", StringComparison.OrdinalIgnoreCase))
{
return ResolveDefaultUnlitShader(pipeline);
}
if (string.Equals(alias, "urp_lit", StringComparison.OrdinalIgnoreCase))
{
return TryFindShader(UrpLitShaders);
}
if (string.Equals(alias, "hdrp_lit", StringComparison.OrdinalIgnoreCase))
{
return TryFindShader(HdrpLitShaders);
}
if (string.Equals(alias, "built_in_lit", StringComparison.OrdinalIgnoreCase))
{
return TryFindShader(BuiltInLitShaders);
}
return null;
}
private static Shader TryFindShader(params string[] shaderNames)
{
foreach (var shaderName in shaderNames)
{
var shader = Shader.Find(shaderName);
if (shader != null)
{
return shader;
}
}
return null;
}
private static void WarnIfPipelineMismatch(string shaderName, PipelineKind activePipeline)
{
if (string.IsNullOrEmpty(shaderName))
{
return;
}
var lowerName = shaderName.ToLowerInvariant();
bool shaderLooksUrp = lowerName.Contains("universal render pipeline") || lowerName.Contains("urp/");
bool shaderLooksHdrp = lowerName.Contains("high definition render pipeline") || lowerName.Contains("hdrp/");
bool shaderLooksBuiltin = lowerName.Contains("standard") || lowerName.Contains("legacy shaders/");
bool shaderLooksSrp = shaderLooksUrp || shaderLooksHdrp;
switch (activePipeline)
{
case PipelineKind.HighDefinition:
if (shaderLooksUrp)
{
McpLog.Warn($"[RenderPipelineUtility] Active pipeline is HDRP but shader '{shaderName}' looks URP-based. Asset may appear incorrect.");
}
else if (shaderLooksBuiltin && !shaderLooksHdrp)
{
McpLog.Warn($"[RenderPipelineUtility] Active pipeline is HDRP but shader '{shaderName}' looks Built-in. Consider using an HDRP shader for correct results.");
}
break;
case PipelineKind.Universal:
if (shaderLooksHdrp)
{
McpLog.Warn($"[RenderPipelineUtility] Active pipeline is URP but shader '{shaderName}' looks HDRP-based. Asset may appear incorrect.");
}
else if (shaderLooksBuiltin && !shaderLooksUrp)
{
McpLog.Warn($"[RenderPipelineUtility] Active pipeline is URP but shader '{shaderName}' looks Built-in. Consider using a URP shader for correct results.");
}
break;
case PipelineKind.BuiltIn:
if (shaderLooksSrp)
{
McpLog.Warn($"[RenderPipelineUtility] Active pipeline is Built-in but shader '{shaderName}' targets URP/HDRP. Asset may not render as expected.");
}
break;
}
}
}
}

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@ -196,20 +196,26 @@ namespace MCPForUnity.Editor.Tools
}
else if (lowerAssetType == "material")
{
// Prefer provided shader; fall back to common pipelines
var requested = properties?["shader"]?.ToString();
Shader shader =
(!string.IsNullOrEmpty(requested) ? Shader.Find(requested) : null)
?? Shader.Find("Universal Render Pipeline/Lit")
?? Shader.Find("HDRP/Lit")
?? Shader.Find("Standard")
?? Shader.Find("Unlit/Color");
Shader shader = RenderPipelineUtility.ResolveShader(requested);
if (shader == null)
return new ErrorResponse($"Could not find a suitable shader (requested: '{requested ?? "none"}').");
return new ErrorResponse($"Could not find a project-compatible shader (requested: '{requested ?? "none"}'). Consider installing URP/HDRP or provide an explicit shader path.");
var mat = new Material(shader);
if (properties != null)
ApplyMaterialProperties(mat, properties);
{
JObject propertiesForApply = properties;
if (propertiesForApply["shader"] != null)
{
propertiesForApply = (JObject)properties.DeepClone();
propertiesForApply.Remove("shader");
}
if (propertiesForApply.HasValues)
{
ApplyMaterialProperties(mat, propertiesForApply);
}
}
AssetDatabase.CreateAsset(mat, fullPath);
newAsset = mat;
}
@ -901,7 +907,8 @@ namespace MCPForUnity.Editor.Tools
// Example: Set shader
if (properties["shader"]?.Type == JTokenType.String)
{
Shader newShader = Shader.Find(properties["shader"].ToString());
string shaderRequest = properties["shader"].ToString();
Shader newShader = RenderPipelineUtility.ResolveShader(shaderRequest);
if (newShader != null && mat.shader != newShader)
{
mat.shader = newShader;