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ObjectSelection in iPhone

Started by sapdev Jun 13, 2009 at 2:05 AM 1 replies 900+ views

Original Post

Jun 13, 2009 at 2:05 AM

Hi, greetings to all. My development platform is iPhone and I am kind of new in the field of OpenGL. I am trying to select which the user touches. I am using this technique. http://gpwiki.org/index.php/OpenGL_Selection_Using_Unique_Color_IDs Everything is fine (theoretically). But How can I render only in the color buffer. Any help regarding this will be highly appreciated.

Pilo

Jun 13, 2009 at 2:58 AM

Hi!

By "But How can I render only in the color buffer." I think you mean how to not write in the depth buffer? it's easy:

glDepthMask(GL_FALSE);

don't forget to enable it again when you need it glDepthMask(GL_TRUE)

sapdev

Author

sapdev

Jun 13, 2009 at 3:45 AM

Yeap . . . as there are 2 bufers only.

Thanks,

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