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POMultiple viewports interfering
 

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  1. POMultiple viewports interfering
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    <p>How can I achieve a clean separation between 2 viewports? </p> <p>I have 2 viewports, one takes full screen length, the other one needs to be less or equal to a quarter of the screen size (I want it to be a map). The problem is they keep interfering, I get to see in the small viewport content from the big one.</p> <p>Here's the <code>display()</code> function I'm using:</p> <pre><code>glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glEnable(GL_LIGHTING); glMatrixMode(GL_PROJECTION); glLoadIdentity(); glViewport(0,0,newWidth,newHeight); gluPerspective(45,(float)newWidth/(float)newHeight,0.2,500); //setup view glMatrixMode(GL_MODELVIEW); glLoadIdentity(); camera.render(crntMode, radiusNew); //ground glColor3f(0.5,0.5,0.5); draw_ground(50,50,2,2,-2); ... ... ... glMatrixMode(GL_PROJECTION); glLoadIdentity(); glViewport(newWidth / 2, newHeight / 2, newWidth / 2, newHeight / 2); gluPerspective(45,(float)newWidth/(float)newHeight,0.2,500); glMatrixMode(GL_MODELVIEW); glLoadIdentity(); camera.render(mini_map, radiusNew); //ground glColor3f(0.5,0.5,0.5); draw_ground(50,50,2,2,-2); ... ... ... //swap buffers glutSwapBuffers(); </code></pre> <p><img src="https://i.stack.imgur.com/Cljq1.png" alt="Both viewport cameras are following the character, one from a third person perspective, the other one from top up. It might be harder to see, but the background from the mini-map viewport is interfering with large one (the large on is acting almost as a background for the mini-map). Sometimes the large viewport covers the small viewport."></p> <p>Both viewport cameras are following the character, one from a third person perspective, the other one from top up. It might be harder to see, but the background from the mini-map viewport is interfering with large one (the large on is acting almost as a background for the mini-map). Sometimes the large viewport covers the small viewport.</p>
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    1. USMihai Neacsu
    1. USMihai Neacsu
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      1. POMultiple viewports interfering
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      1. VTUpMod
    1. CO"*The problem is they keep interfering*" In what way? How exactly does this manifest itself? What kind of stuff are you drawing into each?
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      1. POMultiple viewports interfering
      1. USNicol Bolas
    2. COAdded a screenshot. I'm capturing the same thing, but using a different camera position.
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      1. POMultiple viewports interfering
      1. USMihai Neacsu
    3. COWhat I'm trying to say is the smaller viewport needs to be on top at all times. In my case, the walls I draw from the large viewport keep covering the smaller one.
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      1. POMultiple viewports interfering
      1. USMihai Neacsu
 

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