Re: A simple preprocessor question
Re: A simple preprocessor question
- Subject: Re: A simple preprocessor question
- From: Shamyl Zakariya <email@hidden>
- Date: Tue, 20 Mar 2007 13:48:21 -0400
Having just received Rick's reply after sending my message, I see how
to make it work. I am surprised what it *used* to work. I don't
believe I ever manually added a DEBUG preprocessor macro, but
honestly it's easy to forget this stuff. Maybe I did, long ago...
Manually adding the macro works, and I'm able to get back to tracking
down an odd GL error.
email@hidden
"the electrodes of progress on the nipples of ignorance"
-- Dr. Rick Solomon
On Mar 20, 2007, at 1:39 PM, Shamyl Zakariya wrote:
In fact, I just saw the glError macro in the FBOBunnies samplecode
on developer.apple.com -- it seems legitimate, so I can't help but
wonder why it's not working for me. Is there some project setting I
accidently obliterated which causes that preprocessor macro to be
defined?
http://developer.apple.com/samplecode/FBOBunnies/listing1.html
( The author of that demo is a poster on idevgames, and I got the
glError macro from him )
email@hidden
"time to barf a rainbow"
On Mar 20, 2007, at 1:29 PM, Shamyl Zakariya wrote:
In that case, is there any preprocessor constant that *is* defined
when building a debug executable ( that isn't when building a
release )?
email@hidden
On Mar 20, 2007, at 1:22 PM, alex wrote:
DEBUG must not be defined.
#ifndef DEBUG
#error "DEBUG not defined"
#endif
alex
At 1:17 PM -0400 3/20/07, Shamyl Zakariya wrote:
I have a framework ( wrapping some base opengl functionality )
which defines a macro which (in a debug build) queries for
OpenGL errors, and in a release build does nothing -- since
querying for GL errors is runtime expensive.
The macro looks like this:
#if DEBUG
#define glError() { \
GLenum err = glGetError(); \
while (err != GL_NO_ERROR) { \
printf("glError: %s caught at %s:%u\n", (char *)gluErrorString
(err), __FILE__, __LINE__); \
err = glGetError(); \
} \
}
#else
#define glError() ;
#endif
As far as I can tell, this used to work. In debug builds, the
macro expanded and would query for runtime errors. And in
release builds, it went away and my code ran quickly, like it
should.
Now, at some recent point ( I can't say exactly when ) it began
to follow the #else path in both debug and release builds. I
assume I'm using the wrong preprocessor directive... so can
anybody tell me how better to bracket this?
email@hidden
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