GLFW_CONTEXT_VERSION_MAJOR is ignored

[ypujante]

Due to how the internals of Emscripten work, the window hint GLFW_CONTEXT_VERSION_MAJOR is ignored unless the linker flag -sMAX_WEBGL_VERSION=2 is set when compiling.

[ypujante]

This will be fixed when Emscripten 4.0.1 is released (this bug will be closed then).

The current workaround is to add the linker flag -sMAX_WEBGL_VERSION=2 manually to your build

[valentijnnieman]

Wanted to add I seemed to have to add -sMIN_WEBGL_VERSION=2 as well to get WebGL 2 support.

[ypujante]

@valentijnnieman If you add -sMIN_WEBGL_VERSION=2 then you get a WebGL 2 context no matter what GLFW_CONTEXT_VERSION_MAJOR. It is described in the issue I referenced.

[valentijnnieman]

@valentijnnieman If you add -sMIN_WEBGL_VERSION=2 then you get a WebGL 2 context no matter what GLFW_CONTEXT_VERSION_MAJOR. It is described in the issue I referenced.

Right. I guess I assumed someone setting their GLFW_CONTEXT_VERSION_MAJOR to 2 would expect it to be 2. I think I didn't get a WebGL2 context with -sMAX_WEBGL_VERSION=2 and GLFW_CONTEXT_VERSION_MAJOR set to 2. Oh well!

[ypujante]

The internals of Emscripten around this topic are quite awfully designed as I pointed out in this response.

When Emscripten 4.0.1 is released, you will just have to use the contrib port and not have to deal with this nonsense... It is already merged, it just needs to be released...