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feat(gl): OpenGL 4.1 and the ludic.render3d renderer
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`Gl.*` binds the whole OpenGL 4.1 core API — every entry point of the
platform gl3.h with every GL_* constant, generated by `ludic-dev glgen`
with per-call ABI thunks. Windowed builds get an NSOpenGLContext on the
existing window at Retina resolution; headless builds render into an
offscreen CGL context, so a program that uses Gl.* renders and
screenshots identically under the test harness. It links gl.ll, the
thunks and OpenGL.framework only when used; every other build stays
byte-identical.

packages/ludic.render3d is a physically based renderer written on that
surface: HDRI image-based lighting, GPU-generated terrain with scanned
PBR materials, CDLOD, cascaded shadows, glTF with skinning, instanced
vegetation with impostors, procedural grass, water, SSAO, and an HDR
pipeline with bloom, auto-exposure and ACES.

It also carries this session's work on it: the terrain at half its cost
(10.3 -> 5.4 ms of frame), the streaming hitch that got worse the longer
you played, a resize that emptied the world, and the packaging that lets
a game use the renderer from its own repository — `ludic assets`, the
material manifest shipping with the package, and shader lookup falling
back to the install root. See changes/ for each, with its numbers.

The camping game that drove all of it has moved out to its own
repository, Maroon Lake; examples/rendering/smooth.ludic stays as the
renderer's example here.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
This commit is contained in:
Orkun ÇAKILKAYA 2026-09-10 03:31:12 +03:00
parent 470971bf70
commit f25289db20
90 changed files with 35316 additions and 19853 deletions
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12
tools/ludic-cli/build.ludic
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@ -36,7 +36,7 @@ function compile_app(src: pointer, out: pointer, mode: int, save: bool) -> bool
if mode == 2 {
if not shq(`{ludicc()} --headless {src} --emit-llvm -o {ll}`) { return false }
if not shq(`{cc()} -O2 {ll}{pbf} -o {out}`) { return false }
if not shq(`{cc()} -O2 {ll}{gl_link_flags(ll)}{pbf} -o {out}`) { return false }
if not save { run(`rm -f {ll}`) }
return true
}
@ -46,11 +46,19 @@ function compile_app(src: pointer, out: pointer, mode: int, save: bool) -> bool
# canonical `ludicc -o` path links it only when Audio.* is used.
let cocoa = `{home}runtime/native/cocoa.ll`
let audio = `{home}runtime/native/audio.ll`
if not shq(`{cc()} -O2 {ll} {cocoa} {audio} -framework Cocoa -Wl,-needed_framework,GameController -Wl,-needed_framework,AVFoundation -Wl,-rpath,@loader_path{pbf} -o {out}`) { return false }
if not shq(`{cc()} -O2 {ll} {cocoa} {audio} -framework Cocoa -Wl,-needed_framework,GameController -Wl,-needed_framework,AVFoundation -Wl,-rpath,@loader_path{gl_link_flags(ll)}{pbf} -o {out}`) { return false }
if not save { run(`rm -f {ll}`) }
return true
}
# A program that uses Gl.* references the @lgl_* thunks; link the OpenGL backend
# (gl.ll + gl_thunks.ll + OpenGL.framework) only then, so other builds are untouched.
function gl_link_flags(ll: pointer) -> pointer {
if not shq(`grep -q "@lgl_" {ll}`) { return "" }
let home = ludic_home()
return ` {home}runtime/native/gl.ll {home}runtime/native/gl_thunks.ll -framework OpenGL`
}
# the directory part of a path, without the trailing '/' ("" when there is none)
function dir_of_path(p: pointer) -> pointer {
var last = -1