Update

sw_rendering.md

@@ -40,6 +40,7 @@ These are some notable software renderers:
 
 - **[Build engine](build_engine.md)**: So called ["pseudo 3D"](pseudo_3d.md) or primitive 3D, this was a very popular [proprietary](proprietary.md) portal-rendering engine for older games like [Duke Nukem 3D](duke3d.md) or [Blood](blood.md).
 - **[BRender](brender.md)**: Old commercial renderer used in games such as Carmageddon, Croc or Harry Potter 1. Later made [FOSS](foss.md).
+- **[Chasm: The Rift](chasm_the_rift.md) engine**: proprietary 1997 renderer made specifically for one game, notable especially by being a hybrid of "2.5D" and "true 3D", it managed to make it look very good.
 - **[Dark Engine](dark_engine.md)**: Old proprietary game engine which includes a SW renderer, used mainly in the game Thief. The author writes about it at https://nothings.org/gamedev/thief_rendering.html.
 - **[id Tech](id_tech.md)**: Multiple engines by [Id software](id.md) (later made [FOSS](foss.md)) used for games like [Doom](doom.md), [Quake](quake.md) and its successors included a software renderer. Quake's SW renderer was partially described in the *Michael Abrash's Graphics Programming Black Book*, Doom's renderer is described e.g. in the book *Game Engine Black Book DOOM*.
 - **[Irrlich](irrlicht.md)**: [FOSS](foss.md) game engine including a software renderer as one of its [backends](backend.md).
@@ -49,7 +50,7 @@ These are some notable software renderers:
 - **[SSRE](ssre.md)**: The guy who wrote [LIL](lil.md) also made this renderer named Shitty Software Rendering Engine, accessible [here](http://runtimeterror.com/tech/ssre/).
 - **[System Shock](system_shock.md) engine**: Old proprietary game engine.
 - **[TinyGL](tinygl.md)**: Implements a subset of [OpenGL](opengl.md).
-- Many old [games](game.md) in the 90s implemented their own software renderers, so you can look there.
+- In general many old [games](game.md) in the 90s implemented their own software renderers, so you can look there.
 - ...
 
 ## See Also