Messages

1

Graphics / Re: Is there any way to have sf::Text not cache the new font texture into memory whe

« on: Today at 10:30:00 am »

Instead of completely reloading the font from file, you could make a copy of the sf::Font instance before rendering characters, and use it to reset your working sf::Font instance from time to time by assigning to it. This will reuse the same underlying FreeType objects under the hood but start with new empty textures.

thanks for it. 👍 but this is not much different from what I wrote, and does not change the underlying problem. I compared the two by the time it takes to iterate over a CJK Unicode block without limiting the fps, and the difference is about 200 milliseconds.

2

Graphics / Re: Is there any way to have sf::Text not cache the new font texture into memory whe

« on: Today at 08:51:24 am »

"Failed to add a new character to the font: the maximum texture size has been reached."
This error is not entirely due to the low video memory of my laptop. I tested it on my other pc with 8gb vram. This problem still occurs without manually clearing the cache at certain intervals.Apparently, this is caused by keep adding large character texture caches to the vram. I am very frustrated by this problem. It would be great if sfml had an API to turn off the default behavior of automatically caching character textures in video memory.

3

Graphics / Is there any way to have sf::Text not cache the new font texture into memory whe

« on: November 21, 2024, 09:42:47 am »

I am making a program using SFML on an old laptop, and its task is to print all Unicode characters, just like in this video:

However, after running for a while, the program will show the error:
"Failed to add a new character to the font: the maximum texture size has been reached."
I noticed that Text::setString() caches the textures of the characters rendered in the text into memory to speed up the next use of those textures, but my program clearly does not need this feature.

My current solution is:

Text::setString(character);
if (character % 500 == 0) {
    mainFont.loadFromFile(currentFont);
}

This is clumsy and wastes performance and memory.

Is there a solution?
One idea I had was to use FreeType to render the characters directly, but I feel like this would waste SFML's potential.