intel cards: "no errors" from glsl

Graphics and GPU Programming Programming

Started by ehmdjii April 18, 2010 12:11 PM

4 comments, last by ehmdjii 14 years ago

ehmdjii

239

Author

April 18, 2010 12:11 PM

hello, i am using this code to check if my glsl shader compiled fine.


    glGetObjectParameterivARB(obj, GL_OBJECT_INFO_LOG_LENGTH_ARB, &infologLength);

    if (infologLength > 1)
    {
		int charsWritten  = 0;
		char * const infoLog = new char[infologLength];
		glGetInfoLogARB(obj, infologLength, &charsWritten, infoLog);
		tError(infoLog, false);
		delete infoLog;
    }
}

the length of the returned string is empty on nvidia and ATI cards, but on intel cards this one returns the string "no errors." now what is the best way to find out, if there are really no errors? should i just check for this string? or is there a convention what this function glGetInfoLogARB should return?

fcoelho

389

April 18, 2010 12:26 PM

Use glGetShader with GL_COMPILE_STATUS as the parameter. Check the man page for glGetProgram if you want to check for errors in the program linking also.

HuntsMan

370

April 18, 2010 12:28 PM

That's not the way to see if the shader compilation was successful, the correct way is:

glGetObjectParameterivARB(obj, GL_OBJECT_COMPILE_STATUS_ARB, &status);

ehmdjii

239

Author

April 18, 2010 12:28 PM

thanks! is there an opengl function for this for versions < 2.0 ? some ARB extension maybe?

V-man

813

April 18, 2010 03:01 PM

Quote:Original post by ehmdjii
thanks! is there an opengl function for this for versions < 2.0 ? some ARB extension maybe?

But
glGetObjectParameterivARB(obj, GL_OBJECT_COMPILE_STATUS_ARB, &status);

is an extension from that GL_ARB_shading_language_100. Notice the ARB at the end.

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);

ehmdjii

239

Author

April 20, 2010 10:41 AM

Quote:Original post by V-man
But
glGetObjectParameterivARB(obj, GL_OBJECT_COMPILE_STATUS_ARB, &status);

is an extension from that GL_ARB_shading_language_100. Notice the ARB at the end.

thanks, i was actually refering to the first reply by Huntsman.

intel cards: "no errors" from glsl

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intel cards: "no errors" from glsl

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