Long text render issues about lightning HOT 8 CLOSED

@AndriyShpyra What's the size of text block you're mentioning? Can you provide code snippet? Also, what platform are you running Lightning on?

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Size of text block depends on the response from an api, it can be around 600 000 symbols.
During the development process Lightning is being run mostly on chrome browser

class TextDemo extends lng.Application { _init() { this.patch({ x: 50, y: 50, Text: { text: { wordWrapWidth: 600, textColor: 0xffff00ff, fontSize: 36, text: Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Cursus turpis massa tincidunt dui ut ornare lectus sit amet. Augue ut lectus arcu bibendum at varius vel pharetra vel. Amet mattis vulputate enim nulla aliquet. Ac turpis egestas integer eget aliquet. Potenti nullam ac tortor vitae purus faucibus. Duis ut diam quam nulla. Posuere lorem ipsum dolor sit. Faucibus ornare suspendisse sed nisi. Scelerisque felis imperdiet proin fermentum leo vel orci. Faucibus in ornare quam viverra orci .....and a lot more text}
}
})
}
}

const options = {stage: {w: window.innerWidth, h: window.innerHeight, useImageWorker: false}};
const app = new TextDemo(options);
document.body.appendChild(app.stage.getCanvas());`
__

from lightning.

Probably you hit the max texture size and the texture will not be rendered, a valid solution would to split the text up in chunks and use some form of pagination

from lightning.

@AndriyShpyra Can we close the ticket?

from lightning.

We actually could try solving it on Lightning's end, for example by doing text chunking text into smaller pieces and composing several textures. This could be increasingly a problem, because different platforms have different GL capabilities and code that works on desktop browser or even existing low end platforms would break when hitting target platform.

from lightning.

Good suggestion, but what are we going to do after all the textures are created? We would end up with a batch of textures and only one them would be visible. We then need to offer additional functionality to display one after the other, and the question is if it will match the expectation.

We can create some configurable text components for the SDK like scroller / paging.

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Thanks for help!
It would be cool if such functionality was added to Lightning

from lightning.

I analysed the possibilities and unfortunately creating complex text component would not be a good idea.

For one, many developers are used to current way of representing text via texture and introducing different way (e.g. text element) would introduce unnecessary confusion.

Additionally, it would probably take some time before such element would become stable and bug free. It is good candidate for next major release but not as a feature for current one.

And to answer your initial question, to avoid such bugs from occuring it is recommended to create textures that do not exceed viewport dimensions.

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