---
name: "glutReportErrors"
section: "3"
platform: "linux"
package: "freeglut"
version: "3.8.0-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/glutReportErrors"
---

# glutReportErrors(3)

for debugging purposes; prints out OpenGL run-time errors.

## NAME

glutReportErrors - for debugging purposes; prints out OpenGL run-time errors.

## SYNTAX

```

```

void glutReportErrors(void);

## DESCRIPTION

This routine prints out any OpenGL run-time errors pending and clears the errors.  This routine typically should only be used for debugging purposes since calling it will slow OpenGL programs.  It is provided as a convenience; all the routine does is call *glGetError* until no more errors are reported.  Any errors detected are reported with a GLUT warning and the corresponding text message generated by *gluErrorString.*

Calling glutReportErrors repeatedly in your program can help isolate OpenGL errors to the offending OpenGL command.  Remember that you can use the *-gldebug* option to detect OpenGL errors in any GLUT program.

## SEE ALSO

glutInit, glutCreateWindow, glutInitDisplayMode, gluErrorString, glGetError

## AUTHOR

Mark J. Kilgard (mjk@nvidia.com)