How to make a surface on which we can draw anything and it stays in the memory

Huder

In GameMaker:Studio game engine there is a thing which is called "Surfaces" First you create that surface by giving width and height in pixels then you can draw on it everything you want. You can draw sprites, draw primitives, draw pixels, lines, squares etc.

Surfaces are not clearing by itself it's like painting on a raster image in 2D graphics program, when you draw something it will stay until you draw something on top of it And this process is invisible (it happens in the memory) until you use function draw_surface() to show that surface.

You can convert that surface to a new sprite, or texture or just draw it on screen

How i can achieve this in GoDot?

frankiezafe

The concept you are searching for seems to be "Render To Texture"1 > instead of drawing on the screen, you draw in a texture somewhere in the gpu and use it later as an image. In 3d, i achieved this by placing a "Viewport" in the scene and attaching another scene to it (camera, lights, meshes, environment, etc.). It is super easy to setup because the camera will render directly in the viewport.

The last part of the job is to retrieve the texture from the viewport. For this part, you will need a bit of gdscript to pass the texture of the viewport to the material of you sprite.

I hope it helps you.