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#!/usr/bin/env python3
# This script is part of the 64k demo project.
# Offline WGSL validation: compose #includes then run naga-cli.
# Usage: ./scripts/validate_shaders.py [--install]
import os
import sys
import subprocess
import tempfile
REPO = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
# Mirrors InitShaderComposer() in src/effects/shaders.cc
# snippet_name -> path relative to REPO
SNIPPETS = {
"common_uniforms": "src/shaders/common_uniforms.wgsl",
"sequence_uniforms": "src/shaders/sequence_uniforms.wgsl",
"postprocess_inline": "src/shaders/postprocess_inline.wgsl",
"camera_common": "src/shaders/camera_common.wgsl",
"math/sdf_shapes": "src/shaders/math/sdf_shapes.wgsl",
"math/sdf_utils": "src/shaders/math/sdf_utils.wgsl",
"math/common_utils": "src/shaders/math/common_utils.wgsl",
"math/noise": "src/shaders/math/noise.wgsl",
"math/color": "src/shaders/math/color.wgsl",
"math/utils": "src/shaders/math/utils.wgsl",
"lighting": "src/shaders/lighting.wgsl",
"ray_box": "src/shaders/ray_box.wgsl",
"ray_triangle": "src/shaders/ray_triangle.wgsl",
"render/shadows": "src/shaders/render/shadows.wgsl",
"render/scene_query_bvh": "src/shaders/render/scene_query_bvh.wgsl",
"render/scene_query_linear": "src/shaders/render/scene_query_linear.wgsl",
"render/lighting_utils": "src/shaders/render/lighting_utils.wgsl",
"render/scratch_lines": "src/shaders/render/scratch_lines.wgsl",
"render/fullscreen_vs": "src/shaders/render/fullscreen_vs.wgsl",
"render/fullscreen_uv_vs": "src/shaders/render/fullscreen_uv_vs.wgsl",
"render/raymarching": "src/shaders/render/raymarching.wgsl",
"render/raymarching_id": "src/shaders/render/raymarching_id.wgsl",
"render/mesh": "workspaces/main/shaders/mesh_render.wgsl",
}
# Shaders that use runtime ShaderComposer substitutions (e.g. scene_query_bvh
# vs scene_query_linear) — they reference symbols injected at runtime and
# cannot be validated standalone.
SUBSTITUTION_SHADERS = {
"workspaces/main/shaders/renderer_3d.wgsl",
"workspaces/main/shaders/masked_cube.wgsl",
"workspaces/main/shaders/mesh_render.wgsl",
}
# All .wgsl files with entry points that are NOT snippets (i.e. complete shaders)
MAIN_SHADERS = [
"src/effects/chroma_aberration.wgsl",
"src/effects/distort.wgsl",
"src/effects/ellipse.wgsl",
"src/effects/flash.wgsl",
"src/effects/gaussian_blur.wgsl",
"src/effects/ntsc.wgsl",
"src/effects/particle_compute.wgsl",
"src/effects/particle_render.wgsl",
"src/effects/particle_spray_compute.wgsl",
"src/effects/rotating_cube.wgsl",
"src/effects/scene1.wgsl",
"src/effects/scene2.wgsl",
"src/effects/scratch.wgsl",
"src/effects/solarize.wgsl",
"src/effects/vignette.wgsl",
"src/shaders/combined_postprocess.wgsl",
"src/shaders/gaussian_blur.wgsl",
"src/shaders/heptagon.wgsl",
"src/shaders/passthrough.wgsl",
"src/shaders/skybox.wgsl",
"src/shaders/compute/gen_blend.wgsl",
"src/shaders/compute/gen_grid.wgsl",
"src/shaders/compute/gen_mask.wgsl",
"src/shaders/compute/gen_noise.wgsl",
"src/shaders/compute/gen_perlin.wgsl",
"workspaces/main/shaders/circle_mask_compute.wgsl",
"workspaces/main/shaders/circle_mask_render.wgsl",
"workspaces/main/shaders/main_shader.wgsl",
"workspaces/main/shaders/masked_cube.wgsl",
"workspaces/main/shaders/mesh_render.wgsl",
"workspaces/main/shaders/renderer_3d.wgsl",
"workspaces/main/shaders/visual_debug.wgsl",
]
def compose(source, included=None):
"""Recursively resolve #include directives using SNIPPETS map."""
if included is None:
included = set()
result = []
for line in source.splitlines():
if line.strip().startswith("#include "):
s = line.find('"')
e = line.find('"', s + 1)
if s == -1 or e == -1:
result.append(line)
continue
name = line[s + 1:e]
if name in included:
continue
included.add(name)
if name not in SNIPPETS:
result.append(f"// ERROR: unknown snippet '{name}'")
continue
snippet_path = os.path.join(REPO, SNIPPETS[name])
try:
snippet_src = open(snippet_path).read()
result.append(f"// --- {name} ---")
result.append(compose(snippet_src, included))
result.append(f"// --- end {name} ---")
except FileNotFoundError:
result.append(f"// ERROR: missing file for snippet '{name}'")
else:
result.append(line)
return "\n".join(result)
def validate(rel_path):
path = os.path.join(REPO, rel_path)
if not os.path.exists(path):
return None, "file not found"
composed = compose(open(path).read())
with tempfile.NamedTemporaryFile(mode="w", suffix=".wgsl", delete=False) as f:
f.write(composed)
tmp = f.name
try:
r = subprocess.run(["naga", tmp], capture_output=True, text=True)
if r.returncode == 0:
return True, None
return False, (r.stderr or r.stdout).strip()
finally:
os.unlink(tmp)
def main():
if "--install" in sys.argv:
os.execvp("cargo", ["cargo", "install", "naga-cli"])
if subprocess.run(["which", "naga"], capture_output=True).returncode != 0:
print("naga not found. Run: cargo install naga-cli (or: ./scripts/validate_shaders.sh --install)")
sys.exit(1)
passed = failed = skipped = 0
for shader in MAIN_SHADERS:
label = shader.split("/", 1)[-1]
if shader in SUBSTITUTION_SHADERS:
print(f" skip {label} (runtime substitution)")
skipped += 1
continue
ok, err = validate(shader)
if ok is None:
print(f" SKIP {label}")
skipped += 1
elif ok:
print(f" ok {label}")
passed += 1
else:
print(f" FAIL {label}")
for line in err.splitlines()[:8]:
print(f" {line}")
failed += 1
print(f"\n{passed} passed, {failed} failed, {skipped} skipped")
sys.exit(1 if failed else 0)
if __name__ == "__main__":
main()
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