Difficulties with current Renderer.jl about cimgui.jl HOT 2 CLOSED

The new interfaces are init, new_frame and shutdown:

ImGuiGLFWBackend.init(window_ctx)
ImGuiOpenGLBackend.init(gl_ctx)

ImGuiOpenGLBackend.new_frame(gl_ctx)
ImGuiGLFWBackend.new_frame(window_ctx)

ImGuiOpenGLBackend.shutdown(gl_ctx)
ImGuiGLFWBackend.shutdown(window_ctx)

X-ref: https://github.com/JuliaImGui/ImGuiGLFWBackend.jl

from cimgui.jl.

If you'd like to use the master branch, make sure you understand this unsafe_load change.

For example, igGetIO() returns a pointer of type Ptr{ImGuiIO}. With this field access method in v1.79, say we have io::Ptr{ImGuiIO}=igGetIO(), then we can run ds = io.DisplaySize to get a value ds of type ImVec2. This may look handy at the first glance. But, it does not support chaining, for example, io.DisplaySize.x cannot work as expected and it's not trivial to make it work in an efficient way. The new field access method generated by Clang.jl now returns a pointer instead of a value. io.DisplaySize.x will return a pointer and one needs to explicitly write unsafe_load(io.DisplaySize.x) to get the value. In this way, we're able to read/load/copy a single value from a big nested struct without copying the whole struct object from C to Julia. So, I think it's worth reworking everything in this new style.

Also, there is a known issue about the multi-viewport support on Windows.

I don't have time to get hands on this project at the moment, but I'd like to help and answer questions if someone would like to contribute.

from cimgui.jl.