Is there any way to change OpenGL properties when rendering a surface?

Hi,

Is there any way to change OpenGL properties when rendering a surface in Matlab, especially depth peeling? Here an example on how the surface looks like with alpha = 0.5 in Matlab (left) and depth peeling on a different platform (right).

Thanks,

Cristi

Answer 1

[Sally Al Khamees]

If I understand your question correctly, the list of properties returned by opengl are:

 >> opengl('info')
                          Version: 
                           Vendor:
                         Renderer: 
            RendererDriverVersion:
        RendererDriverReleaseDate: 
                   MaxTextureSize: 
                           Visual: 
                         Software: 
             HardwareSupportLevel: 
        SupportsGraphicsSmoothing: 
    *SupportsDepthPeelTransparency*: 
       SupportsAlignVertexCenters: 
                       Extensions: 
               MaxFrameBufferSize:

the SupportsDepthPeelTransparency returns 1 if is supported and 0 otherwise.

You can refer to this document for more information on depth peel support https://www.mathworks.com/help/matlab/ref/opengl.html

And this for specifying rendering techniques: https://www.mathworks.com/help/sl3d/specify-rendering-techniques.html?

I hope that helps

Answer 2

[Tectract]

I ran into this same problem. DepthPeelTransparency is causing weird issues with surf() function EdgeAlpha displaying incorrectly or diffent, on my new system.

you can use the command:

opengl hardwarebasic

to revert to the older-style or more basic style rendering that does not use DepthPeelTransparency

use the command:

opengl hardware

to revert this change in rendering back to using your full GPU capabilities including DepthPeelTranspancy