[Solved] Curious if anyone else has had graphics glitches with ci::gl::drawSphere

Gazoo · August 22, 2021, 1:14am

Hey embers,

On two separate occasions I’ve seen odd glitching using ci::gl::drawSphere. While I believe it is likely still something in my own software, it has just happened on such separate occasions and only with that call that it makes me pause and wonder if perhaps it is a Cinder thing.

Using a geom::Sphere clears the issue right up though.

Cheers,

Gazoo

gabor_papp · August 23, 2021, 10:31am

It’s a known problem I think.

github.com/cinder/Cinder

gl::drawSphere() broken in release v0.9.1

opened 10:33PM - 06 Apr 17 UTC

richardeakin

bug gl

See image: ![blah](https://cloud.githubusercontent.com/assets/5132127/2477822…5/72b0d0de-1af7-11e7-9f33-88d0544d2074.png) Repro by changing _opengl/Cube sample's draw method to: ```cpp void RotatingCubeApp::draw() { gl::clear(); gl::setMatrices( mCam ); gl::drawCoordinateFrame(); gl::drawSphere( vec3( 2, 2, 0 ), 0.2, 12 ); gl::ScopedModelMatrix modelScope; gl::multModelMatrix( mCubeRotation ); mTexture->bind(); //mBatch->draw(); } ```

totalgee · August 26, 2021, 10:52am

Yes, I’ve also come across this. If you adjust the number of subdivisions it may “randomly” work or not…likely uninitialized memory?

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[Solved] Curious if anyone else has had graphics glitches with ci::gl::drawSphere

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