Render to opengl

[termiboros]

Describe the feature

My machine could not able to run the zed because of vulkan drivers error, i would suggest that adding opengl would work fine on my machine and other

[someone13574]

There is an open PR (#13114) which fixes OpenGL rendering. Once it is merged you can compile with RUSTFLAGS="--cfg gles". Adding a fallback mode would need to be done in blade.

[lukaslihotzki]

Blade's part of the fallback mode is tracked in kvark/blade#130. The macOS renderer does not use blade, so support for non-Metal macs is a separate issue.

[andreymal]

Someone needs to fix crashes in blade kvark/blade#133 (comment)