Fixed race condition where the main thread can upload a texture while it's being loaded. Fixes #1011.

common/lc_texture.cpp

@@ -176,9 +176,13 @@ bool lcTexture::Load(const QString& FileName, int Flags)
 
 	if (!Image.FileLoad(FileName))
 		return false;
-
+	
+	mLoading = true;
+	
 	SetImage(std::move(Image), Flags);
 
+	mLoading = false;
+	
 	return true;
 }
 
@@ -188,9 +192,13 @@ bool lcTexture::Load(lcMemFile& File, int Flags)
 
 	if (!Image.FileLoad(File))
 		return false;
-
+	
+	mLoading = true;
+	
 	SetImage(std::move(Image), Flags);
-
+	
+	mLoading = false;
+	
 	return true;
 }
 

common/lc_texture.h

@@ -67,7 +67,7 @@ public:
 
 	bool NeedsUpload() const
 	{
-		return mTexture == 0 && !mImages.empty();
+		return !mLoading && mTexture == 0 && !mImages.empty();
 	}
 
 	int GetFlags() const
@@ -99,6 +99,7 @@ protected:
 	QAtomicInt mRefCount;
 	std::vector<Image> mImages;
 	int mFlags;
+	bool mLoading = false;
 };
 
 lcTexture* lcLoadTexture(const QString& FileName, int Flags);