Let's say I want to render to the FBO that only has a depth texture attached. When I normally check the status of the FBO, I get some error message that I forgot to write down. I have to call glDrawBuffer(GL_NONE) for check FBO status to return OK. Is that correct?
I was able to render to the FBO later in my code and it works.
I'm on an nvidia right now so I don't know if ATI has sone other behavior.
What is the officially correct way to do this?
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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);
From the specs:
Since your color attachment isn't valid, the fbo shouldn't be complete, unless you specify NONE as the draw buffer.The intial value of DRAW_BUFFER for application-created framebuffer objects is COLOR_ATTACHMENT0_EXT.
So i guess this is the correct/official way of doing it.
EDIT : Also check example 7 in the specs
Thanks, it's all good.
------------------------------
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);
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