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+--- Thread: Pointer Warning in glGenTextures (/thread-2684.html)
Pointer Warning in glGenTextures - Pixelated - Apr 6, 2008 11:05 AM
(I've been lurking this site for a long time, and have really enjoyed reading the posts here. Hopefully you guys can help me out on this one)
I've got a small problem...
I'm teaching myself Cocoa with OpenGL, and was writing a small program for practice to display a square and, with the right and left arrow keys, rotate it. The next step was for me to attempt to apply a texture to the object. For the texture loading code, I wrote this:
Code:
-(void) loadTextures
{
NSLog(@"loading textures...");
glGenTextures( TOTALTEXTURES, texture );
glBindTexture(GL_TEXTURE_2D, texture[0] );
[self loadImage:@"ship"];
}However, when I build the code, I get the warning "pointer targets in passing argument 2 of 'glGenTextures' differ in signedness". When I compile the code, this occurs:
Code:
[Session started at 2008-04-06 14:01:10 -0400.]
2008-04-06 14:01:10.355 OpenGLLearning[2310:10b] loading textures...
[Session started at 2008-04-06 14:01:10 -0400.]
Loading program into debugger…
GNU gdb 6.3.50-20050815 (Apple version gdb-768) (Tue Oct 2 04:07:49 UTC 2007)
Copyright 2004 Free Software Foundation, Inc.
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This GDB was configured as "i386-apple-darwin".Program loaded.
sharedlibrary apply-load-rules all
Attaching to program: `/Users/davidallen/Downloads/OpenGLrules/build/Release/OpenGLrules.app/Contents/MacOS/OpenGLrules', process 2310.After that, no window pops up or anything. If I comment out the code, though, the program works normally. I've checked the debugger, but, considering I've never used it before, didn't see anything interesting.
I'm on a MacBook Pro 15.4" with 2GB RAM and 512MB VRAM.
** EDIT **
I got rid of the warning (texture was a GLint when it should have been a GLuint), but the program still crashes. Looking further into it, it appears to be because of an error EXEC_BAD_ACCESS (SIGSEGV). Any suggestions?
Pointer Warning in glGenTextures - OneSadCookie - Apr 6, 2008 01:28 PM
If you're reporting a crash, you need to post a crash log.
That said, it's very likely that this is because you're making an OpenGL call at a time when you don't have a current context.