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PO
primarykey
Id
2940169
data
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0
AnswerCount
0
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0
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CreationDate
2010-05-30T20:25:24.480
FavoriteCount
0
LastActivityDate
2010-05-30T20:25:24.480
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0
OwnerUserId
0
ParentId
2908994
PostTypeId
2
Score
2
ViewCount
0
LastEditorDisplayName
text
Body
It's a shot in the dark, but fonts tend to get set up early because it's no fun being without text. So check that the first call to <code>wglMakeCurrent</code> precedes the <code>glGenTextures</code> used to create the name for the font texture. More generally, whilst I've only ever used OpenGL from C++, I've had a certain amount of wierd behaviour that I've had to track down. So I suggest two things that I've found helpful when working with OpenGL fairly directly: Firstly, insert calls to <code>glGetError</code> in as many places as possible. Putting this after every single OpenGL call -- except for a call to <code>wglMakeCurrent</code> to deactivate the current context, since <code>glGetError</code> always returns an error with no context -- is always good. Something simple like <code>assert(glGetError()==GL_NO_ERROR)</code> is a reasonable start (or pick any othe method of breaking into the debugger that lets you carry on anyway to see what happens next) and if you check the docs for <code>glGetError</code> you can probably come up with something more comprehensive. Secondly, on Windows at least, make sure that you are always operating with a valid current context. This is particularly important for the calls to <code>glGenTextures</code> that generate texture names. <code>assert(wglGetCurrentContext())</code> will do the trick here, ideally just before every block of OpenGL calls, except of course for whichever call to <code>wglMakeCurrent</code> sets the current context.
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1. POTrouble shooting openGL text textures not showing up correctly cross platform
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1. POTrouble shooting openGL text textures not showing up correctly cross platform
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