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Added some null checks #4

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23 changes: 16 additions & 7 deletions ShaderStripperVariantCollection.cs
Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
#if UNITY_2018_2_OR_NEWER
#if UNITY_2018_2_OR_NEWER
using System.Collections;
using System.Collections.Generic;
using System.Collections.ObjectModel;
Expand Down Expand Up @@ -82,6 +82,7 @@ void ReplaceOverwrittenCollections(){
bool ShaderVariantsEqual(ShaderVariantCollection.ShaderVariant a, ShaderVariantCollection.ShaderVariant b){
if (a.shader != b.shader || a.passType != b.passType) return false;
if ((a.keywords == null) != (b.keywords == null)) return false;
if (a.keywords == null && b.keywords == null) return true;
if (a.keywords.Length != b.keywords.Length) return false;
_tempCompareShaderVariants.Clear();
_tempCompareShaderVariants.AddRange(a.keywords);
Expand Down Expand Up @@ -410,22 +411,30 @@ protected override bool StripCustom(Shader shader, ShaderSnippetData passData, I

// Loop over cached variants
foreach (var collectedVariant in collectedPassVariants){

// Must match ALL keywords
_tempRequestedKeywordsToMatch.Clear();
_tempRequestedKeywordsToMatch.AddRange(_tempRequestedKeywordsToMatchCached);

// Early out (no match) if keyword counts don't match
if (_tempRequestedKeywordsToMatch.Count != collectedVariant.keywords.Length) continue;

// Early out (match) if both have no keywords
if (_tempRequestedKeywordsToMatch.Count == 0 && collectedVariant.keywords.Length == 0){
if (_tempRequestedKeywordsToMatch.Count == 0 && (collectedVariant.keywords == null || collectedVariant.keywords.Length == 0))
{
variantMatched = true;
break;
}

// No match
if (collectedVariant.keywords == null)
continue;

// Early out (no match) if keyword counts don't match
if (_tempRequestedKeywordsToMatch.Count != collectedVariant.keywords.Length)
continue;

// Check all keywords
_tempCollectedKeywordsSorted.Clear();
_tempCollectedKeywordsSorted.AddRange(collectedVariant.keywords);
if (collectedVariant.keywords != null)
_tempCollectedKeywordsSorted.AddRange(collectedVariant.keywords);
_tempCollectedKeywordsSorted.Sort((a,b)=>{return string.CompareOrdinal(a,b);});
foreach (var k in _tempCollectedKeywordsSorted){
bool keywordMatched = _tempRequestedKeywordsToMatch.Remove(k);
Expand Down Expand Up @@ -483,4 +492,4 @@ public override void OnGUI(){
#endif
}
}
#endif
#endif