Sixth 3D engine demos

The Game of Life, also known simply as Life, is a cellular automaton devised by the British mathematician John Horton Conway in 1970.

• https://en.wikipedia.org/wiki/Conway%27s_Game_of_Life
  • Game rules:
    • 2 cell states: alive / dead
    • Each cell sees 8 neighboring cells.
    • If alive cell neighbors count is 2 or 3, then cell survives, otherwise it dies.
    • Dead cell becomes alive if neighbors count is exactly 3.

Current application projects 2D game grid/matrix onto three dimensional space. Extra dimension (height) is used to visualize history (previous iterations) using glowing dots suspended in space.

Usage:

key	result
mouse click on the cell (cell)	toggles cell state
<space>	next iteration
ENTER	next iteration with the history
"c"	clear the matrix

Initial test for creating user interfaces in 3D and:

• window focus handling
• picking objects using mouse
• redirecting keyboard input to focused window

Window focus acts like a stack.

When window is clicked with the mouse, previously focused window (if any) is pushed to the focus stack and new window receives focus. Red frame appears around the window to indicate this.

When ESC key is pressed, window focus is returned to previous window (if any).

When any window is focused, all keyboard input is redirected to that window, including cursor keys. To be able to navigate around the world again, window must be unfocused first using ESC key.

• TODO:
  • Improve focus handling:
    • Perhaps add shortcut to navigate world without exiting entire stack of focus.
    • Possibility to retain and reuse recently focused elements.
    • Store user location in the world and view direction with the focused window. So that when returning focus to far away object, user is redirected also to proper location in the world.
  • Possibility to store recently visited locations in the world and return to them.

Quite a lot of text editors can be rendered:

See also similar looking web based demo ! :)

• TODO: instead of projecting 2D visualizations onto 3D space, visualize some formula using all 3 dimensions available.

Simple test scene. Easy to implement and looks nice.

Test scene that is generated simultaneously using:

• conventional polygons
  • for realtime navigation, and
• voxels
  • for on-demand raytracing

Instead of storing voxels in dumb [X * Y * Z] array, dynamically partitioned octree is used to compress data. Press "r" key anywhere in the scene to raytrace current view through compressed voxel data structure.

An automated graphics benchmark that measures the engine's rendering performance across different rendering modes.

The benchmark will cycle through different scenes that utilize different rendering primitives (textured polygons, billboards, solid polygons, etc.) to measure their relative performance.

The camera follows a deterministic orbital path around the scene, ensuring reproducible results across runs.

At the end, the benchmark will output a report that is easy to preserve for later comparisons.

Example benchmark report:

================================================================================
                         GRAPHICS BENCHMARK RESULTS
================================================================================
Date:        2026-03-16 19:17:51
Resolution:  1920x1080
Cubes:       4096 (16x16x16 grid)
Duration:    30 seconds per test

--------------------------------------------------------------------------------
SYSTEM INFORMATION
--------------------------------------------------------------------------------
CPU Name:    AMD Ryzen AI 9 HX 370 w/ Radeon 890M
Arch:        amd64
Cores:       24

--------------------------------------------------------------------------------
Test                         Avg FPS
--------------------------------------------------------------------------------
Solid Cubes                  49.65
Lit Solid Cubes              41.40
Textured Cubes               32.80
Wireframe Cubes              42.84
Star Grid                    304.59
================================================================================