Alternative to window.Capture()

[TheEnigmist]

I need a good alternative to window.Capture(). This function take 0.5s to take image, i need a faster function to do the same!
I read a topic where laurent said "shader" can do this!
But i can't find a good tutorial or topic that explain how put in image/texture/sprite what i see in window!

[Laurent]

Instead of drawing to the window and then capturing its contents to a texture, draw to a texture directly (sf::RenderTexture).

Shaders can change what's being drawn, they can't help reading what's already drawn.

[TheEnigmist]

Is it normal render texture takes 832 ms to create itself?
I use

Code: [Select]

sf::RenderTexture render;
Clock.Restart();
render.Create(1024,768);
std::cout << gameClock.GetElapsedTime().AsMilliseconds() <<std::endl;


[Tex Killer]

Try creating it once, then just printing on it at each frame.

[TheEnigmist]

Try creating it once, then just printing on it at each frame.

It's what i do! I've a class and i create that RenderTexture into the class costructor (called 1 time of course), but when i switch window (menu->game f.e.) it take a bit more than if i render with normal RenderWindow. Maybe i write a bad code, but it's my first full project that i want ot complete, bad-written or not :lol:

[Tex Killer]

Check if you are re-constructing your object, thus re-creating the RenderTexture.

[TheEnigmist]

Check if you are re-constructing your object, thus re-creating the RenderTexture.

Code: [Select]


int main(){
sf::RenderWindow App(sf::VideoMode(1024,768,32),"SFML Project",sf::Style::Close);
App.ShowMouseCursor(false);
Game myGame;
myGame.Run(App);
return 0;
}

I'm sure i 'm not re-costructing my Game object

[Tex Killer]

It's hard to know what is the issue without knowing how your Game class works.

[Laurent]

Try a minimal example involving only a RenderTexture instance, no Game or whatever. Will be much faster to test than your big project

[TheEnigmist]

I found that in Release mode capture() is really fast, a lot faster than debug So i don't need anymore to use RenderTexture