Can't find gladLoadGL function

[sasmaster]

Hi.I downloaded the sources from the online generator but I don't see gladLoadGL() function there.

[Shimmen]

Did you specify glad to generate a loader or not? If you specified that it shouldn't generate its own loader it instead generated the function gladLoadGLLoader, where you pass in the loader procedure.

[sasmaster]

Yes, I did.And it generated still without that func.

[Shimmen]

Interesting. What version of glad are you using? From the master branch, some release, or from the web version? And what language?

[sasmaster]

Web.Just went to the web page,configured the loader and generated.

[Shimmen]

In the top of the glad.h and glad.c files is a comment looking somewhat like this:

OpenGL loader generated by glad 0.1.13a0 on Wed Mar 15 14:00:02 2017.

Language/Generator: C/C++
Specification: gl
APIs: gl=3.3
Profile: core
Extensions:
    
Loader: True
Local files: False
Omit khrplatform: False

Commandline:
    --profile="core" --api="gl=3.3" --generator="c" --spec="gl" --extensions=""
Online:
    http://glad.dav1d.de/#profile=core&language=c&specification=gl&loader=on&api=gl%3D3.3

Could you post an example of how yours look like?

[sasmaster]

OpenGL ES loader generated by glad 0.1.13a0 on Wed Mar 15 09:49:44 2017.

Language/Generator: C/C++
Specification: gl
APIs: gles2=2.0
Profile: compatibility

[sasmaster]

As a sidenote - I generated for ES2.0-3.0

[Shimmen]

I haven't used glad for GLES, but looking at the generated glad.h I see a function with the definition GLAPI int gladLoadGLES2Loader(GLADloadproc). I assume that's the GLES equivalent for the function you are looking for. There is no function for loading with a built-in loader though and it doesn't seem to respect the toggle for it in the web generator. I don't know if that's expected or a bug, but it's pretty strange.

[Dav1dde]

gladLoadGL only exists for the GL API, there is no such function for GLES. As @Shimmen correctly pointed out you need to use int gladLoadGLES2Loader(GLADloadproc) and supply your own loader, if you're using GLFW this would be glfwGetProcAddress and for SDL SDL_GL_GetProcAddress.

There is no gladLoadGLES since there is no easy way to implement it (I would need to load the GLES.dll/so for EGL < 1.5 and get a eglGetProcAddress from somewhere). I plan to add a builtin loader for all the supported APIs though.

[knitterJ]

You probably wanted to run getting started program from https://www.glfw.org/docs/latest/quick_guide.html.
It seems that gl.h, that contains gladLoadGL( GLADloadfunc load) can be generated only from the second version of Glad - Glad2 gl API https://gen.glad.sh/. In the first version of Glad this function is declared differently. From the basic stuff, never forget to include gl.c linker file in your project folder and the compilation process.

[bhavithc]

Just you need to use gladLoadGL((GLADloadfunc)glfwGetProcAddress) instead of gladLoadGLLoader