Correct way to manipulate colors pixel by pixel

[Snok]

I'm trying to to set the color of pixels one by one. I have a matrix with all my value, calculate by some function to assign a specific color. Actually i'm using the Geometry Rectangle with size 1x1, but i'm not sure it's the best way to do that. Anyone have some suggestion? 

[ivan.popelyshev]

"Texture.fromBuffer" . You can later update it with different data. However, it works only with WebGL. If you want canvas, better to handle getImageData/setImageData and use `Texture.from(myCanvas)`, and call "texture.update()" every time you change something

[Snok]

Thanks ! i'll try this way. It's ok only WebGL, perfect!

[Snok]

I've another question =D I've implemented my work with the Texture.fromBuffer and it works fine. I compute my texture with the cpu for every 'pixel' and after i render it. There is a way for me with pixi and webGL to pass some data to the pixel and delegate the work to each one to compute every pixel in parallel?! Because i need to compute my texture frequently with different data and i thought some way to optimize my code with cpu, but of course if i do the work with gpu it will be faster. (the data that i need to pass to the pixel every time it's a different amount) . Thanks, i hope it's not a stupid question 

[ivan.popelyshev]

mesh-shader + renderTexture. If you know how to put your stuff into shader, you can do it.

https://pixijs.io/examples/#/mesh-and-shaders/triangle-color.js 

[Snok]

Perfect! Thanks , I read somethings about mesh and shader before, now that i'm sure that it's the way i'll try to go more inside ✌️ Thanks a lot for all your advice ! Have a nice day!