Shader code validation fail

[CapriciousSun]

Sorry to bother you again, but when I try to run the program, it says "Warning validating Shader code: Validation Failed: No vertex array object bound.". The triangle renders just fine, but when I try to render a rectangle, nothing shows up.
This repository is what I have written: https://github.com/Wheezr/Graphics-Engine.git

[lwjglgamedev]

Have you tried the sample of the book (chapter-4) to see if it works ok? When rendering a quad you will probably need the indices VBO. Please check first with the sample of the book If it does not work for you, I will check.

[lwjglgamedev]

Ok, thanks for sharing. First thing that I see, the warning you get is not relevant. When calling the glValidateProgram it validates if the Shader is valid according to the current OpenGL state. This means that the all the required inputs, etc. are bound in the current context and according to what the shader expects. When creating the Shader program this does not happen since we do not have a VAO bound, so the warning is ok because there is no VAO. Therefore, this warning should not be the cause of the issue, and this is why you get the traingle. I’m not getting it in my environment, but maybe your OpenGL driver is more strict.
In any case, I will change the code since it is misleading. It make not sense to validate the shader when creating. I will probably create a new method for that that you can use to debug, but while rendering. Thanks again for reporting this.
Having said that, the problem you have is with the quad, can you please confirm that this also happens with the original source code of the chapter (it will be chapter 4 in this case)?

[CapriciousSun]

Ok, now that I ran it again, the shader works now. But the error message for the VAO still appears

[lwjglgamedev]

Ok, so now the quad works ok, but only the warning if present. If this is the case, do not worry about that I will update the source code to avoid this confussion

[CapriciousSun]

Ok thank you so much

[lwjglgamedev]

Already upload the modifications. Hop it helps to clarify. Thanks for reporting.