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refactor(render3d): programs, GPU timers and the context behind gpu.ludic

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The last of milestone 1: no OpenGL call is left in render3d outside gpu.ludic but the clock
and the CPU-side buffer helpers.

- gpu_program builds a program and remembers the variant it came from (vertex, fragment and
  defines as one line - the SPIR-V manifest's key), so a backend that cannot compile at run
  time finds the pipeline for the same handle. gpu_use_program and gpu_program_free replace
  32 uses and 2 frees; the overlay's program is recorded under overlay.vert|overlay.frag.
- gpu_query_new / _begin / _end / _result carry R3D_PROF's timers.
- gpu_open, gpu_vsync, gpu_renderer_name and gpu_resize_check carry the context.
- r3d_program_tess is gone: nothing called it and no tessellation shader exists.
- R3D_GLCHECK also checks after framebuffer and renderbuffer changes, viewport, draw buffers,
  program use, texture parameters, the resize check and between frames.

OpenGL frames are byte-identical at the five viewpoints; 59 self-tests pass with and without
R3D_GLCHECK, with no GL error; ludic-dev test 140 passed.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
This commit is contained in:
Orkun ÇAKILKAYA 2026-09-15 11:33:01 +03:00
parent 447acc11bd
commit ce3986bb02
12 changed files with 109 additions and 59 deletions
Download patch file Download diff file Expand all files Collapse all files

14
packages/ludic.render3d/actor.ludic
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@ -72,7 +72,7 @@ function ac_prog_new(vs: string, fs: string, defs: string) -> AcProg {
a.l_view = gpu_uniform(p, "u_view"); a.l_proj = gpu_uniform(p, "u_proj"); a.l_mh = gpu_uniform(p, "u_model_h")
a.l_out = gpu_uniform(p, "u_outline"); a.l_ocol = gpu_uniform(p, "u_outline_col")
# the samplers never move: units 0, 1, 2
gl_use_program(p)
gpu_use_program(p)
u_i(gpu_uniform(p, "u_diff"), 0); u_i(gpu_uniform(p, "u_nrm"), 1); u_i(gpu_uniform(p, "u_arm"), 2)
return a
}
@ -132,7 +132,7 @@ function ac_bind_scene(ap: AcProg) -> void {
if ap.scene_frame == ac_frame { return }
ap.scene_frame = ac_frame
let p = ap.prog
gl_use_program(p)
gpu_use_program(p)
u_mat4(ap.l_view, cam_view)
u_mat4(ap.l_proj, cam_proj)
u_f(ap.l_mh, F_ZERO)
@ -158,7 +158,7 @@ function ac_visible(a: Actor, shadow: bool) -> bool {
}
function actor_draw_one(a: Actor, ap: AcProg, shadow: bool) -> void {
let p = ap.prog
gl_use_program(p)
gpu_use_program(p)
u_mat4(ap.l_model, a.mat)
var skinned = F_ZERO
if a.skin != null { skinned = F_ONE; u_mat4n(ap.l_bones, a.skin.n_joints, a.skin.bones) }
@ -265,7 +265,7 @@ function actor_draw_outlines() -> void {
if a.outline == 0 or not ac_visible(a, false) { continue }
var ap = ac_out
if a.cutout { ap = ac_out_cut }
gl_use_program(ap.prog)
gpu_use_program(ap.prog)
u_mat4(ap.l_view, cam_view); u_mat4(ap.l_proj, cam_proj)
u_f(ap.l_out, f_mul(a.outline, a.scale))
if a.ocol != null { u_v3(ap.l_ocol, a.ocol) } else { u_f3(ap.l_ocol, F_ONE, F_ONE, F_ONE) }
@ -275,7 +275,7 @@ function actor_draw_outlines() -> void {
for i in 0 .. ac_oq_n {
let q = ac_oq[i]
let ap = ac_out
gl_use_program(ap.prog)
gpu_use_program(ap.prog)
u_mat4(ap.l_view, cam_view); u_mat4(ap.l_proj, cam_proj)
u_f(ap.l_out, q.width)
u_f3(ap.l_ocol, q.r, q.g, q.b)
@ -302,8 +302,8 @@ function actor_draw_outline_one(a: Actor, ap: AcProg) -> void {
}
function actor_draw_casters(light_vp: words) -> void {
if ac_actors == null { return }
gl_use_program(ac_sh.prog); u_mat4(ac_sh.l_lvp, light_vp)
gl_use_program(ac_sh_cut.prog); u_mat4(ac_sh_cut.l_lvp, light_vp)
gpu_use_program(ac_sh.prog); u_mat4(ac_sh.l_lvp, light_vp)
gpu_use_program(ac_sh_cut.prog); u_mat4(ac_sh_cut.l_lvp, light_vp)
for i in 0 .. len(ac_actors) {
let a = ac_actors[i]
if not ac_visible(a, true) { continue }