Francesco · Eresh Engine
@ereshengine.org
Building Eresh Engine: an open-source Rust game engine you can open in your browser. https://ereshengine.org/
Pressed Play in the Eresh editor and a Luau script spins this cube. The script asks the engine for components by name and a reflection registry does the rest: no binding code per component. A short thread on how scripting talks to my Rust engine 🧵
September 14, 2026 at 7:12 PM
Pressed Play in the Eresh editor and a Luau script spins this cube. The script asks the engine for components by name and a reflection registry does the rest: no binding code per component. A short thread on how scripting talks to my Rust engine 🧵
#ScreenshotSaturday: this street feels more real. In Eresh, I use post-processing to give its lights more weight. Pre-alpha.
Try it → ereshengine.org?utm_source=b...
#gamedev #indiedev #rustlang #indietech
Try it → ereshengine.org?utm_source=b...
#gamedev #indiedev #rustlang #indietech
September 11, 2026 at 10:45 PM
#ScreenshotSaturday: this street feels more real. In Eresh, I use post-processing to give its lights more weight. Pre-alpha.
Try it → ereshengine.org?utm_source=b...
#gamedev #indiedev #rustlang #indietech
Try it → ereshengine.org?utm_source=b...
#gamedev #indiedev #rustlang #indietech
New devlog: a character controller is two problems, not one. Plus the three gaps in rapier that made my capsule sink, drift and slide downhill.
ereshengine.org/blog/charact...
#gamedev #indiedev #rustlang #indietech
ereshengine.org/blog/charact...
#gamedev #indiedev #rustlang #indietech
September 9, 2026 at 6:23 PM
New devlog: a character controller is two problems, not one. Plus the three gaps in rapier that made my capsule sink, drift and slide downhill.
ereshengine.org/blog/charact...
#gamedev #indiedev #rustlang #indietech
ereshengine.org/blog/charact...
#gamedev #indiedev #rustlang #indietech
I built Eresh's character controller: it walks slopes, steps up, jumps, in-browser. Kinematic capsule, honest contacts. Pre-alpha.
Email updates → ereshengine.org?utm_source=b...
#gamedev #indiedev #rustlang #indietech
Email updates → ereshengine.org?utm_source=b...
#gamedev #indiedev #rustlang #indietech
September 7, 2026 at 5:27 PM
I built Eresh's character controller: it walks slopes, steps up, jumps, in-browser. Kinematic capsule, honest contacts. Pre-alpha.
Email updates → ereshengine.org?utm_source=b...
#gamedev #indiedev #rustlang #indietech
Email updates → ereshengine.org?utm_source=b...
#gamedev #indiedev #rustlang #indietech
A player presses W. Your game should hear "Move", not "W". I am building Eresh around that distinction. A short thread on action-based input 🧵
September 2, 2026 at 6:10 PM
A player presses W. Your game should hear "Move", not "W". I am building Eresh around that distinction. A short thread on action-based input 🧵
#ScreenshotSaturday: pressed Play in Eresh, my from-scratch Rust game engine, and a Luau script spins this cube, no clicks from me. Luau scripting ships with it: early days, but agent-ready is the direction.
Open it → ereshengine.org
#gamedev #indiedev #rustlang #indietech
Open it → ereshengine.org
#gamedev #indiedev #rustlang #indietech
August 29, 2026 at 2:59 PM
#ScreenshotSaturday: pressed Play in Eresh, my from-scratch Rust game engine, and a Luau script spins this cube, no clicks from me. Luau scripting ships with it: early days, but agent-ready is the direction.
Open it → ereshengine.org
#gamedev #indiedev #rustlang #indietech
Open it → ereshengine.org
#gamedev #indiedev #rustlang #indietech
New devlog: a material in Eresh is a .mat.ron file. The shader declares its params, the editor builds the panel from them, one pipeline per feature combo. Plus the bug that broke texture hot-reload.
ereshengine.org/blog/materia...
#gamedev #indiedev #rustlang #indietech
ereshengine.org/blog/materia...
#gamedev #indiedev #rustlang #indietech
August 25, 2026 at 11:01 AM
New devlog: a material in Eresh is a .mat.ron file. The shader declares its params, the editor builds the panel from them, one pipeline per feature combo. Plus the bug that broke texture hot-reload.
ereshengine.org/blog/materia...
#gamedev #indiedev #rustlang #indietech
ereshengine.org/blog/materia...
#gamedev #indiedev #rustlang #indietech
Small thing, big deal: in Eresh, my Rust engine, start from an empty viewport, place a light, spawn a few objects, save, close the tab. Reopen the editor and the scene is exactly as you left it. In the browser, no install.
Open it → ereshengine.org
#gamedev #indiedev #rustlang #indietech
Open it → ereshengine.org
#gamedev #indiedev #rustlang #indietech
August 23, 2026 at 2:39 PM
Small thing, big deal: in Eresh, my Rust engine, start from an empty viewport, place a light, spawn a few objects, save, close the tab. Reopen the editor and the scene is exactly as you left it. In the browser, no install.
Open it → ereshengine.org
#gamedev #indiedev #rustlang #indietech
Open it → ereshengine.org
#gamedev #indiedev #rustlang #indietech
Quick Eresh internal on Eresh Engine, my from-scratch Rust game engine: drag the street light prefab from the content browser to the viewport, release, and the lamp post spawns there.
The editor runs in your browser.
Open it → ereshengine.org
#gamedev #indiedev #rustlang #indietech
The editor runs in your browser.
Open it → ereshengine.org
#gamedev #indiedev #rustlang #indietech
August 18, 2026 at 12:30 AM
Quick Eresh internal on Eresh Engine, my from-scratch Rust game engine: drag the street light prefab from the content browser to the viewport, release, and the lamp post spawns there.
The editor runs in your browser.
Open it → ereshengine.org
#gamedev #indiedev #rustlang #indietech
The editor runs in your browser.
Open it → ereshengine.org
#gamedev #indiedev #rustlang #indietech
#ScreenshotSaturday: a quiet street scene in Eresh Engine, my from-scratch Rust game engine. A sidewalk with curbs and some trash on it. Built and lit right in the browser editor, no install.
Open it → ereshengine.org
#gamedev #indiedev #rustlang #indietech
Open it → ereshengine.org
#gamedev #indiedev #rustlang #indietech
August 14, 2026 at 11:00 PM
#ScreenshotSaturday: a quiet street scene in Eresh Engine, my from-scratch Rust game engine. A sidewalk with curbs and some trash on it. Built and lit right in the browser editor, no install.
Open it → ereshengine.org
#gamedev #indiedev #rustlang #indietech
Open it → ereshengine.org
#gamedev #indiedev #rustlang #indietech
New devlog on Eresh Engine, my from-scratch Rust game engine: anatomy of a .scene.ron file, the plain-text format the editor uses to serialize a scene to disk.
Read it → ereshengine.org/blog/anatomy-of-a-scene-ron.html
#gamedev #indiedev #rustlang #indietech
Read it → ereshengine.org/blog/anatomy-of-a-scene-ron.html
#gamedev #indiedev #rustlang #indietech
August 11, 2026 at 11:05 AM
New devlog on Eresh Engine, my from-scratch Rust game engine: anatomy of a .scene.ron file, the plain-text format the editor uses to serialize a scene to disk.
Read it → ereshengine.org/blog/anatomy-of-a-scene-ron.html
#gamedev #indiedev #rustlang #indietech
Read it → ereshengine.org/blog/anatomy-of-a-scene-ron.html
#gamedev #indiedev #rustlang #indietech
#ScreenshotSaturday: live texture reload in Eresh Engine, my from-scratch Rust game engine. Edited a road barrier's texture in GIMP, painted "hello" on it, saved, and it showed up in the editor moments later.
Open it → ereshengine.org
#gamedev #indiedev #rustlang #indietech
Open it → ereshengine.org
#gamedev #indiedev #rustlang #indietech
August 8, 2026 at 11:47 AM
#ScreenshotSaturday: live texture reload in Eresh Engine, my from-scratch Rust game engine. Edited a road barrier's texture in GIMP, painted "hello" on it, saved, and it showed up in the editor moments later.
Open it → ereshengine.org
#gamedev #indiedev #rustlang #indietech
Open it → ereshengine.org
#gamedev #indiedev #rustlang #indietech
I compiled my Rust game engine to WebAssembly so the editor runs in a browser tab. The renderer needed one changed line. Everything around it is what hurt 🧵
1/ 10 of my 24 crates have zero web-specific code: ECS, math, scene, physics, animation, input. Same source. 👇
1/ 10 of my 24 crates have zero web-specific code: ECS, math, scene, physics, animation, input. Same source. 👇
August 4, 2026 at 4:55 PM
I compiled my Rust game engine to WebAssembly so the editor runs in a browser tab. The renderer needed one changed line. Everything around it is what hurt 🧵
1/ 10 of my 24 crates have zero web-specific code: ECS, math, scene, physics, animation, input. Same source. 👇
1/ 10 of my 24 crates have zero web-specific code: ECS, math, scene, physics, animation, input. Same source. 👇
#ScreenshotSaturday: play-in-editor in Eresh Engine, my from-scratch Rust game engine. Press Play and the physics simulation takes over, press Stop and everything snaps back to where it was. It all runs in your browser.
Open it → ereshengine.org
#gamedev #indiedev #rustlang #indietech
Open it → ereshengine.org
#gamedev #indiedev #rustlang #indietech
August 1, 2026 at 9:57 AM
#ScreenshotSaturday: play-in-editor in Eresh Engine, my from-scratch Rust game engine. Press Play and the physics simulation takes over, press Stop and everything snaps back to where it was. It all runs in your browser.
Open it → ereshengine.org
#gamedev #indiedev #rustlang #indietech
Open it → ereshengine.org
#gamedev #indiedev #rustlang #indietech
New devlog on Eresh Engine, my from-scratch Rust game engine:
undo/redo looks solved (record commands, replay backwards) until you hit an ECS editor.
Read it → ereshengine.org/blog/undo-redo-command-stack.html
#gamedev #indiedev #rustlang #indietech
undo/redo looks solved (record commands, replay backwards) until you hit an ECS editor.
Read it → ereshengine.org/blog/undo-redo-command-stack.html
#gamedev #indiedev #rustlang #indietech
July 28, 2026 at 3:35 PM
New devlog on Eresh Engine, my from-scratch Rust game engine:
undo/redo looks solved (record commands, replay backwards) until you hit an ECS editor.
Read it → ereshengine.org/blog/undo-redo-command-stack.html
#gamedev #indiedev #rustlang #indietech
undo/redo looks solved (record commands, replay backwards) until you hit an ECS editor.
Read it → ereshengine.org/blog/undo-redo-command-stack.html
#gamedev #indiedev #rustlang #indietech
#ScreenshotSaturday: the scene-saving clip I keep promising. In Eresh Engine, my from-scratch Rust game engine, you can open a scene in the browser editor, move objects, save it back to disk, and reload it exactly as you left it.
Open it → ereshengine.org
#gamedev #indiedev #rustlang #indietech
Open it → ereshengine.org
#gamedev #indiedev #rustlang #indietech
July 25, 2026 at 1:50 PM
#ScreenshotSaturday: the scene-saving clip I keep promising. In Eresh Engine, my from-scratch Rust game engine, you can open a scene in the browser editor, move objects, save it back to disk, and reload it exactly as you left it.
Open it → ereshengine.org
#gamedev #indiedev #rustlang #indietech
Open it → ereshengine.org
#gamedev #indiedev #rustlang #indietech
"Forward+" sounds fancy but the core idea is simple. A thread on the trick Eresh uses to handle lots of dynamic lights 🧵
1/ Classic forward shading tests every light against every pixel.
Add 200 lights and that's 200× the work per pixel. It melts. 👇
1/ Classic forward shading tests every light against every pixel.
Add 200 lights and that's 200× the work per pixel. It melts. 👇
July 21, 2026 at 8:38 PM
"Forward+" sounds fancy but the core idea is simple. A thread on the trick Eresh uses to handle lots of dynamic lights 🧵
1/ Classic forward shading tests every light against every pixel.
Add 200 lights and that's 200× the work per pixel. It melts. 👇
1/ Classic forward shading tests every light against every pixel.
Add 200 lights and that's 200× the work per pixel. It melts. 👇
#ScreenshotSaturday: multi-select in Eresh Engine, my from-scratch Rust
game engine. Select a group of entities, copy/paste to duplicate them,
then drag the whole group at once with a single gizmo.
Open it → ereshengine.org
#gamedev #indiedev #rustlang #indietech
game engine. Select a group of entities, copy/paste to duplicate them,
then drag the whole group at once with a single gizmo.
Open it → ereshengine.org
#gamedev #indiedev #rustlang #indietech
July 18, 2026 at 4:28 PM
#ScreenshotSaturday: multi-select in Eresh Engine, my from-scratch Rust
game engine. Select a group of entities, copy/paste to duplicate them,
then drag the whole group at once with a single gizmo.
Open it → ereshengine.org
#gamedev #indiedev #rustlang #indietech
game engine. Select a group of entities, copy/paste to duplicate them,
then drag the whole group at once with a single gizmo.
Open it → ereshengine.org
#gamedev #indiedev #rustlang #indietech
My from-scratch Rust game engine: reworked the material editor, PBR shading updates live as you pick a color (tested it on a duck, no regrets). Also just published my first devlog: why Rust, wgpu and egui for this project.
Open it → ereshengine.org
#gamedev #indiedev #rustlang #indietech
Open it → ereshengine.org
#gamedev #indiedev #rustlang #indietech
July 14, 2026 at 10:19 PM
My from-scratch Rust game engine: reworked the material editor, PBR shading updates live as you pick a color (tested it on a duck, no regrets). Also just published my first devlog: why Rust, wgpu and egui for this project.
Open it → ereshengine.org
#gamedev #indiedev #rustlang #indietech
Open it → ereshengine.org
#gamedev #indiedev #rustlang #indietech
#ScreenshotSaturday: prefabs in Eresh Engine, my Rust game engine with a browser editor. One prefab, a row of instances, one edit to the source and they all update together. Oddly satisfying.
Open it → ereshengine.org
#gamedev #indiedev #rustlang #indietech
Open it → ereshengine.org
#gamedev #indiedev #rustlang #indietech
July 4, 2026 at 11:21 AM
#ScreenshotSaturday: prefabs in Eresh Engine, my Rust game engine with a browser editor. One prefab, a row of instances, one edit to the source and they all update together. Oddly satisfying.
Open it → ereshengine.org
#gamedev #indiedev #rustlang #indietech
Open it → ereshengine.org
#gamedev #indiedev #rustlang #indietech
#ScreenshotSaturday this week I improved the editor stability in Eresh Engine, my from-scratch Rust game engine, fewer crashes and a smoother feel. Now I'm testing dynamic shadows: move a light and they track it live. No install, it runs in your browser.
Open it → ereshengine.org
Open it → ereshengine.org
June 27, 2026 at 10:32 AM
#ScreenshotSaturday this week I improved the editor stability in Eresh Engine, my from-scratch Rust game engine, fewer crashes and a smoother feel. Now I'm testing dynamic shadows: move a light and they track it live. No install, it runs in your browser.
Open it → ereshengine.org
Open it → ereshengine.org
Hi, I'm Francesco, building Eresh Engine: a Rust game engine where the editor comes first.
The best part: the editor runs in your browser. Open a scene, move objects, retune the lights, save.
Still early; source coming soon. Open it → ereshengine.org
#gamedev #indiedev #rustlang #indietech
The best part: the editor runs in your browser. Open a scene, move objects, retune the lights, save.
Still early; source coming soon. Open it → ereshengine.org
#gamedev #indiedev #rustlang #indietech
June 23, 2026 at 2:07 PM
Hi, I'm Francesco, building Eresh Engine: a Rust game engine where the editor comes first.
The best part: the editor runs in your browser. Open a scene, move objects, retune the lights, save.
Still early; source coming soon. Open it → ereshengine.org
#gamedev #indiedev #rustlang #indietech
The best part: the editor runs in your browser. Open a scene, move objects, retune the lights, save.
Still early; source coming soon. Open it → ereshengine.org
#gamedev #indiedev #rustlang #indietech