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OpenGL 1.x is ancient and unless you're targeting very old hardware for some retro project, you wouldn't use it, but the link you provided says it could run ImG

OpenGL 1.x is ancient and unless you're targeting very old hardware for some retro project, you wouldn't use it, but the link you provided says it could run ImGui. Also SDL1 seems completely irrelevant?

TeMPOraL 6y ago
Yup, it seems it could work for both SDL1 and OpenGL 1.x, it's just a matter of writing a custom backend. Per README: "Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles." The backends don't seem all that complicated. Here's the OpenGL 2 implementation: https://github.com/ocornut/imgui/blob/master/backends/imgui_impl_opengl2.cpp https://github.com/ocornut/imgui/blob/master/backends/imgui_... - should be backportable to OpenGL 1.x. I'm pretty sure that if someone was crazy enough, they could even write a ncurses backend for it. Rejecting 50% of the functionality for sure, but most of the UIs I've seen done with Dear ImGui were simple enough that they could be translated to terminal display almost 1:1. I actually love this kind of design, where the dependency on IO particulars is neatly separated out. I don't see much in terms of automated testing in the repo, but I imagine feature-level tests should be easy to add with such design: just have a backend that lets the test drive input, and consume callbacks and rendering commands.
- TazeTSchnitzel 6y ago
  By the way, that link is broken because of a following character being parsed by HN as being part of the URL.
  - TeMPOraL 6y ago
    Thanks, fixed. @dang, is there any reason URL parser should consider a trailing semicolon to be a part of the URL? Or maybe HN needs some form of minimal markup or escaping syntax for URLs? Or at least a documentation of the existing parser? :).
- flohofwoe 6y ago
  Here's an experimental text-mode backend for Dear ImGui based on ncurses (not sure if this required deeper changes to Dear ImGui though): https://github.com/ggerganov/imtui https://github.com/ggerganov/imtui Also, regarding automated testing, AFAIK this is in progress for quite a while: https://github.com/ocornut/imgui/issues/435 https://github.com/ocornut/imgui/issues/435

TeMPOraL 6y ago

Yup, it seems it could work for both SDL1 and OpenGL 1.x, it's just a matter of writing a custom backend. Per README: "Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles." The backends don't seem all that complicated. Here's the OpenGL 2 implementation: https://github.com/ocornut/imgui/blob/master/backends/imgui_impl_opengl2.cpp https://github.com/ocornut/imgui/blob/master/backends/imgui_... - should be backportable to OpenGL 1.x. I'm pretty sure that if someone was crazy enough, they could even write a ncurses backend for it. Rejecting 50% of the functionality for sure, but most of the UIs I've seen done with Dear ImGui were simple enough that they could be translated to terminal display almost 1:1. I actually love this kind of design, where the dependency on IO particulars is neatly separated out. I don't see much in terms of automated testing in the repo, but I imagine feature-level tests should be easy to add with such design: just have a backend that lets the test drive input, and consume callbacks and rendering commands.

TazeTSchnitzel 6y ago
By the way, that link is broken because of a following character being parsed by HN as being part of the URL.
- TeMPOraL 6y ago
  Thanks, fixed. @dang, is there any reason URL parser should consider a trailing semicolon to be a part of the URL? Or maybe HN needs some form of minimal markup or escaping syntax for URLs? Or at least a documentation of the existing parser? :).
flohofwoe 6y ago
Here's an experimental text-mode backend for Dear ImGui based on ncurses (not sure if this required deeper changes to Dear ImGui though): https://github.com/ggerganov/imtui https://github.com/ggerganov/imtui Also, regarding automated testing, AFAIK this is in progress for quite a while: https://github.com/ocornut/imgui/issues/435 https://github.com/ocornut/imgui/issues/435