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45 lines
1.9 KiB
Markdown
45 lines
1.9 KiB
Markdown
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# MODIFIED
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this is a modified version of `https://github.com/JesusKrists/imgui_software_renderer`, which itself is a modified version of `https://github.com/emilk/imgui_software_renderer`.
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# Dear ImGui software renderer
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This is a software renderer for [Dear ImGui](https://github.com/ocornut/imgui).
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I built it not out of a specific need, but because it was fun.
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The goal was to get something accurate and decently fast in not too many lines of code.
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It renders a complex GUI in 1-10 milliseconds on a modern laptop.
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## What it is:
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As the name implies, this is a software renderer for ImGui. It does not handle any windows or input. In the supplied example I use [SDL2](www.libsdl.org) for that.
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## How to use it
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Just copy `imgui_sw.hpp` and `imgui_sw.cpp`. There are no other dependencies beside Dear ImGui. Requires C++11.
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## How to test it
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```
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git clone https://github.com/emilk/imgui_software_renderer.git
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cd imgui_software_renderer
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git submodule update --init --recursive
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./build_and_run.sh
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```
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For the example to work you will need to have SDL2 on your system.
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## Example:
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This renders in 7 ms on my MacBook Pro:
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## Alternatives
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There is another software rasterizer for ImGui (which I did not know about when I wrote mine) at https://github.com/sronsse/imgui/tree/sw_rasterizer_example/examples/sdl_sw_example.
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I have not compared the two (yet).
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## Future work:
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* We do not yet support painting with any other texture than the default font texture.
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* Optimize rendering of gradient rectangles (common for color pickers)
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* Compare my software renderer to [the one by](https://github.com/sronsse/imgui/tree/sw_rasterizer_example/examples/sdl_sw_example) @sronsse
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## License:
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This software is dual-licensed to the public domain and under the following
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license: you are granted a perpetual, irrevocable license to copy, modify,
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publish, and distribute this file as you see fit.
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