Deleting a framebuffer makes my application to crash

Graphics and GPU Programming Programming OpenGL

Started by JGP December 16, 2008 02:27 PM

4 comments, last by JGP 15 years, 4 months ago

125

Author

December 16, 2008 02:27 PM

When I try to delete a framebuffer because it is no longer used the application crashes. The FB is complete and has been used successfully. There are no OpenGL errors. It has one color attachment as RGBA. DEPTH-only attachments (as for shadow maps) don't crash It crashes saying: "unhandled exception in 0x0000000 viewer.exe: 0xC000005. How can I debug this error? Any ideas?

V-man

813

December 16, 2008 04:47 PM

Are you saying it crashes in the driver? Does it say nvogl..dll or atiogl...dll?
Because if it does, it might be a driver bug.

Sig: http://glhlib.sourceforge.net
an open source GLU replacement library. Much more modern than GLU.
float matrix[16], inverse_matrix[16];
glhLoadIdentityf2(matrix);
glhTranslatef2(matrix, 0.0, 0.0, 5.0);
glhRotateAboutXf2(matrix, angleInRadians);
glhScalef2(matrix, 1.0, 1.0, -1.0);
glhQuickInvertMatrixf2(matrix, inverse_matrix);
glUniformMatrix4fv(uniformLocation1, 1, FALSE, matrix);
glUniformMatrix4fv(uniformLocation2, 1, FALSE, inverse_matrix);

HuntsMan

370

December 16, 2008 05:59 PM

Do you have a opengl context current when you call glDeleteFramebuffers? Are you deleting the framebuffer from a destructor?

JGP

125

Author

December 17, 2008 03:02 AM

It crashes inside the function glDeleteFramebuffersEXT but, according to the error message, it makes my EXE to crash, not any nvidia DLL.

HuntsMan: yes, I have the current opengl context active when I try to delete it. And yes I am deleting it from a destructor, but both the opengl context is OK and the framebuffer ID are valid at that point, so I don't see why that could crash my application.

PD: I found out that DEPTH-only framebuffers also makes it to crash.

Any ideas?

V-man

813

December 17, 2008 09:15 AM

Upload some small code somewhere so that people can compile and test.
Have you tested on other machines?

Are you sure this isn't about glDeleteFramebuffersEXT being a NULL pointer?
Are you using glew?