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McBaine

glGetFloatv() returning -1.#IND0 and 1.#QNAN?!?!

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I''m getting some intermitten problem when I try to set a ModelView matrix. After countless hours checking the code, I decided to fall back onto the tried-n-true "printf" debugging. Immediately after computing the composite MV matrix, I check glGetError() which didn''t return any errors. Then I call glGetFloatv( GL_MODELVIEW_MATRIX, m ) where m is float m[16]. Upon inspection, the translation values, seem to be -1.#IND0 and 1.#QNAN! Any idea why this would be happening? Thanks in advance!

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have you called glLoadIdentity() at least once?

also, check that you arn''t writing/reading past your memory
block for 16 floats.

could you post some code?

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hello.
When you try to divide with zero or you try to place a bigger value then the variale can handle then you get this values.
check the values you input in the matrix stucture.

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Actually, it turns out that occassionally, the data coming into the function was crap (i.e. NaN already). So it''s not an OpenGL problem.

Thanks for the responses anyways!

McB

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