I making a game engine. i making it on mglw, then i decided to change moderngl_window to pygame, and
it shows only blank black screen.
here is the code:
`
import sys
import moderngl as mgl
import moderngl_window.geometry
import pygame as pg

class Engine:
    def __init__(self, win_size=(1600, 900)):
        pg.init()
        self.WIN_SIZE = win_size
        self.cam_pos = glm.vec3(0, 15, -5)
        self.clock = pg.time.Clock()
        pg.display.gl_set_attribute(pg.GL_CONTEXT_MAJOR_VERSION, 3)
        pg.display.gl_set_attribute(pg.GL_CONTEXT_MINOR_VERSION, 3)
        pg.display.gl_set_attribute(pg.GL_CONTEXT_PROFILE_MASK, pg.GL_CONTEXT_PROFILE_CORE)
        self.window = pg.display.set_mode(self.WIN_SIZE, flags=pg.OPENGL | pg.DOUBLEBUF)
        pg.event.set_grab(True)
        pg.mouse.set_visible(False)
        self.ctx = mgl.create_context()
        self.ctx.enable(flags=mgl.DEPTH_TEST | mgl.CULL_FACE)
        moderngl_window.activate_context(self)
        # i think its not work now
        self.resizable = False

    @staticmethod
    def check_events():
        for event in pg.event.get():
            if event.type == pg.QUIT:
                pg.quit()
                sys.exit()

    def render(self):
        dx, dy = pg.mouse.get_rel()
        self.ctx.screen.use()
        moderngl_window.geometry.quad_fs().render(self.ctx.program(fragment_shader='
        `#version 330

        out vec4 FragColor;
    
        void main(){
        vec3 col = vec3(1, 0, 0);
        FragColor = vec4(col, 1.0);
        }
        `', vertex_shader='
        `#version 330 core

        in vec3 in_position;
    
        void main() {
           gl_Position = vec4(in_position, 1.0);
        }
        `'))
        pg.display.flip()
        self.clock.tick(60)

    def run(self):
        while True:
            self.check_events()
            self.render()


if __name__ == "__main__":
    app = Engine()
    app.run()

`

i expected it show me red screen, but it showed only black screen.