OpenGL Underlay in Skia Backend Leads to Font Bugs and Rendering Issues

[axojhf]

I am programming in C++ on Windows 10 22H2.

I attempted to integrate a video player by referring to the 'opengl_underlay' project in the examples. I noticed that under the condition where SLINT_BACKEND is set to 'winit-skia-opengl', the font rendering appears as follows, while it becomes normal when switched to 'winit-femtovg'.

winit-skia-opengl:

winit-femtovg:

Additionally, I have observed that the images rendered under 'winit-skia-opengl' exhibit more jagged edges.
I apologize that English is not my native language; some expressions may not be precise enough.

[tronical]

Are you using Windows inside a virtual box virtual machine by chance?

[axojhf]

No, I am running it on my laptop with an Intel UHD 620 GPU.
When OpenGL Underlay is not used, the font rendering is normal.

[tronical]

Ahh thanks. I missed that. If you see this issue then your OpenGL underlay isn’t restoring the OpenGL state exactly as it was when finished. For example, are to changing the current VAO?

[axojhf]

Thank you, the text display has become normal after I modified the code in the following way:

glGetIntegerv(GL_TEXTURE_BINDING_2D,&texture);
render();
glBindTexture(GL_TEXTURE_2D,texture);

[tronical]

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