I have a bit of a conundrum... using some old shaders I made long time ago with c++ and openGL, and trying to get them to work with SFML now...
I get this strange thing, when I use the background as the shader effect, but it only shows on 1/4 of the screen, but apparently it works.
Trying to troubleshoot why not full screen
so... i'm wondering how to get the current window's boundaries..? something something getglobalbounds() ?
Thinking of sending the window boundaries to the shader and see if I can affect it... not even sure if this shrinking shader bug is in shaders itself or the c++ code
I am using this game example from a book, the game is called Thomas was Late and the book is Beginning C++ Game Programming that deals with SFML, C++ and just a little bit with GLSL.
There is a split screen option in the game but not sure how it would affect the shader to take only this quarter of a screen...?
Sorry, but it's really baffling me
Another thing, in general... How do you get the position sent to the shaders in SFML?
I haven't seen any good tutorial on it yet.
Like in "proper" openGL you usually use in vertex shader:
layout (location = 0) in vec3 aPos;
void main()
{
gl_Position = vec4(aPos.x, aPos.y, aPos.z, 1.0);
}
but I'm not sure if this works in SFML like that?
All the examples I've seen use deprecated 1.0 stuff, that is really old.
I mean I try to use 3.3 core, and even that's old, but at least it's a bit modern...