I created my own OpenGL 3D renderer application. If I run my application in Windows I do not have any visual artifacts.

But in Linux(Debian12) when I run my application selected GPU information is below. These are the return values of glGetString(GL_RENDERER) and glGetString(GL_VERSION).

GPU: Mesa Intel(R) UHD Graphics 620 (KBL GT2)
OpenGL Version: 4.6 (Core Profile) Mesa 22.3.6

I got these strange visual artifacts in the image below:

But If I run my application with the environment values below there is no any artifact:

__NV_PRIME_RENDER_OFFLOAD=1 __GLX_VENDOR_LIBRARY_NAME=nvidia ./my_renderer

And the selected GPU information:

GPU: NVIDIA GeForce 940MX/PCIe/SSE2
OpenGL Version: 3.3.0 NVIDIA 535.183.01

Screenshot without artifacts:

I am using a full blue colored jpg file as diffuse texture and full white colored jpg file as specular texture.

Material file of the monkey model:

# Blender MTL File: 'None'
# Material Count: 1

newmtl None
Ns 500
Ka 0.8 0.8 0.8
Kd 0.8 0.8 0.8
Ks 0.8 0.8 0.8
d 1
illum 2
map_Kd blue.jpg
map_Ks white.jpg

My OpenGL initials are below:

        glClearColor(0.7f, 0.7f, 0.7f, 1.0f);
        glViewport(0, 0, 1280, 720);
        glEnable(GL_FRAMEBUFFER_SRGB);
        glEnable(GL_DEPTH_TEST);
        glDepthFunc(GL_LESS);
        glEnable(GL_CULL_FACE);
        glCullFace(GL_BACK);
        glFrontFace(GL_CCW);

What could be the reason of this error while using Mesa OpenGL libraries? Should I try to fix this? If I should fix this, how can I fix this error while using Mesa OpenGL libraries?