How can I position framebuffer objects on the screen in OpenGL?

Question

I currently have two framebuffers which are drawn using

glBlitFramebuffer(0, 0, 1920, 1080, 0, 0, 1920, 1080,
    GL_COLOR_BUFFER_BIT, GL_NEAREST);

But the texture does not take up the whole screen, and I would like to position it at a certain x,y on the screen. The images by default start from 0,0 and then span the width/height provided, however I would like the image to start at say, [100, 100] and span the width/height provided.

How would I do this?

Answer 1

The last 4 positional parameters to the function are for destination position. The position can be changed using this, but the image pixels must be exact or the image won't be displayed.

Answer 2

void Graphics::fboToScreen(GLuint fbo){
    int w, h; getWindowSize(w, h);
    int startAtX = 100;
    int startAtY = 100;
    glBlitNamedFramebuffer(fbo, 0, 0, 0, w, h, startAtX, startAtY, w, h, GL_COLOR_BUFFER_BIT, GL_NEAREST);
}