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POOpenGL: glGetError() returns invalid enum after call to glewInit()
 

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  1. POOpenGL: glGetError() returns invalid enum after call to glewInit()
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    <p>I use GLEW and freeglut. For some reason, after a call to glewInit(), glGetError() returns error code 1280, even with glewExperimental = GL_FALSE. </p> <p>I cannot compile the shaders, glGetProgramInfoLog() returns "Vertex shader(s) were not successfully compiled before glLinkProgram() was called. Link failed." I was able to compile the shaders before.</p> <p>Reinstalling the drivers didn't help. </p> <p>Here's my code: </p> <pre><code>int main(int argc, char* argv[]) { GLenum GlewInitResult, res; InitWindow(argc, argv); res = glGetError(); // res = 0 glewExperimental = GL_TRUE; GlewInitResult = glewInit(); fprintf(stdout, "ERROR: %s\n", glewGetErrorString(GlewInitResult)); // "No error" res = glGetError(); // res = 1280 glutMainLoop(); exit(EXIT_SUCCESS); } void InitWindow(int argc, char* argv[]) { glutInit(&amp;argc, argv); glutInitContextVersion(4, 0); glutInitContextFlags(GLUT_FORWARD_COMPATIBLE); glutInitContextProfile(GLUT_CORE_PROFILE); glutSetOption(GLUT_ACTION_ON_WINDOW_CLOSE, GLUT_ACTION_GLUTMAINLOOP_RETURNS); glutInitWindowPosition(0, 0); glutInitWindowSize(CurrentWidth, CurrentHeight); glutInitDisplayMode(GLUT_DEPTH | GLUT_DOUBLE | GLUT_RGBA); WindowHandle = glutCreateWindow(WINDOW_TITLE); GLenum errorCheckValue = glGetError(); if (WindowHandle &lt; 1) { fprintf(stderr, "ERROR: Could not create new rendering window.\n"); exit(EXIT_FAILURE); } glutReshapeFunc(ResizeFunction); glutDisplayFunc(RenderFunction); glutIdleFunc(IdleFunction); glutTimerFunc(0, TimerFunction, 0); glutCloseFunc(Cleanup); glutKeyboardFunc(KeyboardFunction); } </code></pre> <p>What I am doing wrong?</p>
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    1. USMartin
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      1. POOpenGL: glGetError() returns invalid enum after call to glewInit()
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    1. COAre you doing anything with GlewInitResult? Maybe you should be calling glewGetErrorString instead of glGetError (for detecting glew problems)
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    2. COI don't do anything with GlewInitResult. glewGetErrorString returns "No error".
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      1. USMartin
 

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