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Texture cache overflow: 16 texture units available.


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Using MelonJS 5.1 (I cannot upgrade at this point), I'm creating a fairly large adventure game. My TMX map loaded fine until I added water tile layer:



At which point I started getting error: Texture cache overflow: 16 texture units available.

Error name is me.video.Error

Digging into the code, I see there is a max size for the Texture Cache:

        validate : function () {
            if (this.length >= this.max_size) {
                // TODO: Merge textures instead of throwing an exception
                throw new me.video.Error(
                    "Texture cache overflow: " + this.max_size +
                    " texture units available."

How can I fix this?

Btw this seems to have been fixed in 2015: https://github.com/melonjs/melonJS/issues/595

@obiot @Parasyte

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the issue is that WebGL has a limited amount of texture, and as of today the limit is 16 for ~70% of devices :


in my opinion the only way to fix that is either to pack/merge your tilesets directly, or to use TexturePacker (that was the fix back in 2015) when possible (https://github.com/melonjs/melonJS/wiki/How-to-use-Texture-Atlas-with-TexturePacker)



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  • 7 months later...

@obiot This bug is happening again, but only on Mandarin version, even though I'm loading I think fewer overall assets than the working Spanish version.

Question: what are texture units (i.e., what does "16 texture units" mean?) and how do I compare it to overall loaded texture size?

If I print out game.map_texture, how do I compare it to see if it's below 16 units?

        game.map_texture = new me.video.renderer.Texture(

Mandarin Version: Printing out length for my three texture atlases: 

console.log('Game Texture: ', Object.keys(game.texture.atlas).length, game.texture);

> length of game.texture.atlas is 1236

console.log('Game Map Texture: ', Object.keys(game.map_texture.atlas).length, game.map_texture);

> length of game.map_texture.atlas is 354

console.log('Game Player Texture: ', Object.keys(game.player_texture.atlas).length, game.player_texture);

> length of game.player_texture.atlas is 107

Working Spanish Version: Printing out length for my three texture atlases: 

> length of game.texture.atlas is 1215

> length of game.map_texture.atlas is 358

> length of game.player_texture.atlas is 107


Mind checking the game out?

Spanish: https://spywatchlex.com/spanish/login.html

Mandarin: https://spywatchlex.com/mandarin/login.html

Use promo code "LEEROY" for free full game access. You're able to see the asset list loaded.

Images of my packed assets on disk:


https://imgur.com/gWqzXJs - map items

https://imgur.com/m7Ol433 - texture


https://imgur.com/lR0vSeB - map items

https://imgur.com/j10okXE - texture




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