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How expensive is loadTexture?


Jackal16
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The Phaser manual states that sprite.loadTexture is an expensive operation, is this still true if the texture has been loaded to the game cache in preload?

 

Example:

 

function preload() {

game.load.image('image1', 'assets/image1.png');

game.load.image('image2', 'assets/image2.png');

}

 

 

function construct() {

mySprite = game.add.sprite(xpos, ypos, 'image1');

}

 

Somewhere later in the game loop we change to image 2

 

mySprite.loadTexture('image2');​

 

 

Thanks

 

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It's still true, but it's not to do with the Phaser Cache - it's to do with the GPU. If the texture is already loaded on the GPU (i.e. in use by another sprite) then loadTexture is fine. If the texture needs to be pushed up to the GPU then yes it can take a small performance hit doing that. It's very small, but if you do it often then the issues can mount up.

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It's still true, but it's not to do with the Phaser Cache - it's to do with the GPU. If the texture is already loaded on the GPU (i.e. in use by another sprite) then loadTexture is fine. If the texture needs to be pushed up to the GPU then yes it can take a small performance hit doing that. It's very small, but if you do it often then the issues can mount up.

What about CANVAS renderer?

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