tutorial31_youtube : init_glew() fails

[ssooffiiaannee]

os : ubunut 24.04
session type : wayland
glew : libglew2.2:amd64

running tutorial31_youtube leads to the following error :

GLFW 3.3.10 initialized
ogldev_glfw.cpp:77 - Unknown errortutorial31: ogldev_glfw.cpp:78: void init_glew(): Assertion `0' failed.
Aborted (core dumped)

I had to comment out the error handling inside the function to make it work.

static void init_glew()
{
    glewExperimental = GL_TRUE;
    GLenum res = glewInit();
    printf("res = %d\n", res);     // <= output res
    if (res != GLEW_OK) {
        // OGLDEV_ERROR0((const char*)glewGetErrorString(res));
        // assert(0);
        // exit(1);
    }
}

res = 4 => looking at the source of glew_init function, res = 4 , " Unknown error ".
This thread may indicate a wayland specific issue.

GLFW 3.3.10 initialized
res = 4                 <= res  = 4
Warning! Unable to get the location of uniform 'gWireframeColor'
Warning! Unable to get the location of uniform 'gNormalMap'
Num materials: 4
Loaded texture '../Content/wal67ar_small.jpg' width 250, height 250, bpp 3
!!! Debug callback !!!
Debug message: id 1, GL_INVALID_OPERATION in glGetTextureHandleARB(unsupported)
Message source: API
Error type: Error
Severity: High
!!! Debug callback !!!
Debug message: id 1, GL_INVALID_OPERATION in glMakeTextureHandleResidentARB(unsupported)
Message source: API
Error type: Error
Severity: High
Loaded diffuse texture '../Content/wal67ar_small.jpg' at index 0
Shading model 2
Loaded ambient color [0.200000 0.200000 0.200000]
Loaded diffuse color [0.827451 0.792157 0.772549]
Loaded specular color [0.000000 0.000000 0.000000]
Loaded texture '../Content/SpiderTex.jpg' width 249, height 250, bpp 3
!!! Debug callback !!!
Debug message: id 1, GL_INVALID_OPERATION in glGetTextureHandleARB(unsupported)
Message source: API
Error type: Error
Severity: High
!!! Debug callback !!!
Debug message: id 1, GL_INVALID_OPERATION in glMakeTextureHandleResidentARB(unsupported)
Message source: API
Error type: Error
Severity: High
Loaded diffuse texture '../Content/SpiderTex.jpg' at index 1
Shading model 2
Loaded ambient color [0.200000 0.200000 0.200000]
Loaded diffuse color [0.690196 0.639216 0.615686]
Loaded specular color [0.000000 0.000000 0.000000]
Loaded texture '../Content/drkwood2.jpg' width 768, height 768, bpp 3
!!! Debug callback !!!
Debug message: id 1, GL_INVALID_OPERATION in glGetTextureHandleARB(unsupported)
Message source: API
Error type: Error
Severity: High
!!! Debug callback !!!
Debug message: id 1, GL_INVALID_OPERATION in glMakeTextureHandleResidentARB(unsupported)
Message source: API
Error type: Error
Severity: High
Loaded diffuse texture '../Content/drkwood2.jpg' at index 2
Shading model 2
Loaded ambient color [0.200000 0.200000 0.200000]
Loaded diffuse color [0.800000 0.800000 0.800000]
Loaded specular color [0.000000 0.000000 0.000000]
Loaded texture '../Content/engineflare1.jpg' width 128, height 128, bpp 3
!!! Debug callback !!!
Debug message: id 1, GL_INVALID_OPERATION in glGetTextureHandleARB(unsupported)
Message source: API
Error type: Error
Severity: High
!!! Debug callback !!!
Debug message: id 1, GL_INVALID_OPERATION in glMakeTextureHandleResidentARB(unsupported)
Message source: API
Error type: Error
Severity: High
Loaded diffuse texture '../Content/engineflare1.jpg' at index 3
Shading model 2
Loaded ambient color [0.200000 0.200000 0.200000]
Loaded diffuse color [0.800000 0.800000 0.800000]
Loaded specular color [0.000000 0.000000 0.000000]

[emeiri]

The returned code 4 is GLEW_ERROR_NO_GLX_DISPLAY which indicates some Wayland problem. But you're saying that it works so maybe we should print a warning and let the program continue and see what happens. In addition, the calls to glGetTextureHandleARB fail which may indicate that the driver doesn't support bindless textures.