CODEWITHSUNDEEP
javaopengltextureslwjglram
Geosearchef
Geosearchef

Reputation: 648

50 MB Image uses 1 GB of RAM as Texture

I'm using LWJGL to create an OpenGL 3D application. For importing my images (for UV mapping) and converting them to Textures I use Slick2D:

bufferedImage = ImageIO.read(renderEngine.class.getResource("/images/textures/Stargate/image8192.png"));
objTextures.get(1)[0] = BufferedImageUtil.getTexture("", bufferedImage).getTextureID();

This method (second line) instantly uses 1 GB of RAM, but my Image has only the size of 8192x8192 --> 50 MB.

How can i fix this?

Upvotes: 0

Views: 161

Answers (1)

Brett Okken
Brett Okken

Reputation: 6306

The amount of raw space depends on a number of things.

What is the color model?

What is the data type of the sample model?

Using an image type of TYPE_4BYTE_ABGR would lead to a minimum size of 256MB (8K * 8K * 4).

Using a data type of int (instead of byte) could increase that 4x.

And this is just the first line of reading into a BufferedImage.

Upvotes: 3

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