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Author Topic: resetGLStates() problem  (Read 2796 times)

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lol123

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resetGLStates() problem
« on: November 30, 2013, 04:24:25 pm »
Could somebody give me an example how to use resetGLStates() function to mix direct OpenGL drawing with RenderTarget.draw() function without using pushGLStates() and popGLStates? Docs (http://www.sfml-dev.org/documentation/2.1/classsf_1_1RenderTarget.php#aac7504990d27dada4bfe3c7866920765) don't help  :( Just a code snippet like that:

window.draw();
//magic
glRectf();
//magic
window.draw()
//magic
glRectf();

eXpl0it3r

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lol123

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Re: resetGLStates() problem
« Reply #2 on: November 30, 2013, 06:48:11 pm »
I know, but the example doesn't work

Nexus

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Re: resetGLStates() problem
« Reply #3 on: November 30, 2013, 06:51:47 pm »
Why don't you tell us what doesn't work? ???
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lol123

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Re: resetGLStates() problem
« Reply #4 on: November 30, 2013, 07:06:31 pm »
Well, I want to mix OpenGL draw functions and window.draw() function. Now I surround every OpenGL functions block with popGLStates() and pushGLStates():
window.draw();

popGLStates();
glRectf();
pushGLStates();

window.draw();

popGLStates();
glRectf();
pushGLStates();

window.draw();

but that doesn't work. What am I doing wrong?

eXpl0it3r

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Re: resetGLStates() problem
« Reply #5 on: November 30, 2013, 07:58:58 pm »
I don't have experience with OpenGL, but I don't think you can switch between states multiple times for one frame. So you can just either draw OpenGL stuff first and then SFML or the other way around - not sure though.

Anyways you still haven't said what happens that let's you say "it doesn't work". Does it crash? Do you get an error? Is the drawing odd?
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lol123

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Re: resetGLStates() problem
« Reply #6 on: November 30, 2013, 08:01:06 pm »
It just doesn't draw what I draw with OpenGL calls

Thanks, I will try that

lol123

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Re: resetGLStates() problem
« Reply #7 on: November 30, 2013, 08:08:21 pm »
No that didn't help

Laurent

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Re: resetGLStates() problem
« Reply #8 on: November 30, 2013, 08:51:41 pm »
Quote
now I surround every OpenGL functions block with popGLStates() and pushGLStates():
This is not the correct usage. Please read the tutorial one more time.
Laurent Gomila - SFML developer

 

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