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Anruin / UE4_GenerateMipmaps.cpp

Last active April 10, 2024 03:51

CPU code used to generate dynamic mipmaps for UE4 dynamic UTexture2D objects.

	// Copyright 2021 Impossibility Labs Inc. https://github.com/ArtheonVR.
	// Based on: https://answers.unrealengine.com/questions/607129/how-do-you-generate-mips-at-runtime.html

	void FAsyncTaskDownloadTexture::GenerateMipmaps() const {
	const int32 Width = Texture->GetSizeX();
	const int32 Height = Texture->GetSizeY();

	// Texture bytes.
	TArray<uint8> TextureByteArray;
	TextureByteArray.AddUninitialized(Texture->PlatformData->Mips[0].BulkData.GetElementCount());