Squashed 'vendor/bionic-fg/' content from commit 9a81c36

git-subtree-dir: vendor/bionic-fg
git-subtree-split: 9a81c36d1017c3f1c85e395df8545a93868492df

1 files changed, 102 insertions, 0 deletions

diff --git a/cleanroom/build_embedded.py b/cleanroom/build_embedded.py
new file mode 100644
index 0000000..ec6001a
--- /dev/null
+++ b/cleanroom/build_embedded.py
@@ -0,0 +1,102 @@
+#!/usr/bin/env python3
+"""Compile cleanroom/glsl/shader_NN.comp with glslc and regenerate an embedded
+shader header with the same interface as src/shaders_embedded.hpp.
+
+Usage: python3 cleanroom/build_embedded.py [--out src/shaders_embedded_clean.hpp]
+Env:   GLSLC / SPIRV_VAL override tool paths (default: NDK 27.3 shader-tools).
+"""
+import argparse
+import os
+import subprocess
+import sys
+
+REPO = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+GLSL_DIR = os.path.join(REPO, "cleanroom", "glsl")
+NDK_TOOLS = os.path.expanduser(
+    "~/Library/Android/sdk/ndk/27.3.13750724/shader-tools/darwin-x86_64")
+GLSLC = os.environ.get("GLSLC", os.path.join(NDK_TOOLS, "glslc"))
+SPIRV_VAL = os.environ.get("SPIRV_VAL", os.path.join(NDK_TOOLS, "spirv-val"))
+REGISTRY_SLOTS = 56
+
+
+def compile_one(src: str) -> bytes:
+    out = src[:-5] + ".spv"
+    subprocess.run(
+        [GLSLC, "-fshader-stage=comp", "--target-env=vulkan1.1", "-O",
+         src, "-o", out],
+        check=True)
+    subprocess.run([SPIRV_VAL, out], check=True)
+    with open(out, "rb") as f:
+        return f.read()
+
+
+def main() -> int:
+    ap = argparse.ArgumentParser()
+    ap.add_argument("--out", default=os.path.join(REPO, "src", "shaders_embedded_clean.hpp"))
+    args = ap.parse_args()
+
+    blobs = {}
+    for name in sorted(os.listdir(GLSL_DIR)):
+        if not name.endswith(".comp"):
+            continue
+        idx = int(name.replace("shader_", "").replace(".comp", ""))
+        blobs[idx] = compile_one(os.path.join(GLSL_DIR, name))
+        print(f"  shader_{idx:02d}: {len(blobs[idx])} bytes")
+
+    lines = []
+    lines.append("#pragma once")
+    lines.append("")
+    lines.append("// Generated by cleanroom/build_embedded.py from cleanroom/glsl/.")
+    lines.append("// Clean-room reimplementation; see cleanroom/PROCESS.md.")
+    lines.append("")
+    lines.append("#include <array>")
+    lines.append("#include <cstddef>")
+    lines.append("#include <cstdint>")
+    lines.append("")
+    lines.append("namespace bionic_fg::embedded {")
+    lines.append("")
+    lines.append("struct ShaderBlob {")
+    lines.append("    const char* name;")
+    lines.append("    const std::uint8_t* data;")
+    lines.append("    std::size_t size;")
+    lines.append("};")
+    lines.append("")
+    lines.append("inline constexpr std::uint32_t kSpirvMagic = 0x07230203u;")
+    lines.append("")
+    for idx in sorted(blobs):
+        data = blobs[idx]
+        lines.append(f"inline constexpr std::uint8_t shader_{idx:02d}_data[] = {{")
+        for i in range(0, len(data), 12):
+            chunk = ", ".join(f"0x{b:02x}" for b in data[i:i + 12])
+            lines.append(f"    {chunk},")
+        lines[-1] = lines[-1].rstrip(",")
+        lines.append("};")
+        lines.append("")
+    lines.append(f"inline constexpr std::array<ShaderBlob, {REGISTRY_SLOTS}> kShaderRegistry = {{{{")
+    for idx in range(REGISTRY_SLOTS):
+        if idx in blobs:
+            lines.append(f'    ShaderBlob{{"shader_{idx:02d}.spv", shader_{idx:02d}_data, sizeof(shader_{idx:02d}_data)}},')
+        else:
+            lines.append(f'    ShaderBlob{{"shader_{idx:02d}.spv", nullptr, 0}},')
+    lines[-1] = lines[-1].rstrip(",")
+    lines.append("}};")
+    lines.append("")
+    lines.append("inline bool IsValidSpirv(const ShaderBlob& blob) {")
+    lines.append("    if (blob.size < sizeof(std::uint32_t)) return false;")
+    lines.append("    const std::uint32_t magic =")
+    lines.append("        static_cast<std::uint32_t>(blob.data[0]) |")
+    lines.append("        (static_cast<std::uint32_t>(blob.data[1]) << 8u) |")
+    lines.append("        (static_cast<std::uint32_t>(blob.data[2]) << 16u) |")
+    lines.append("        (static_cast<std::uint32_t>(blob.data[3]) << 24u);")
+    lines.append("    return magic == kSpirvMagic;")
+    lines.append("}")
+    lines.append("")
+    lines.append("} // namespace bionic_fg::embedded")
+    with open(args.out, "w") as f:
+        f.write("\n".join(lines) + "\n")
+    print(f"wrote {args.out} with {len(blobs)}/{REGISTRY_SLOTS} populated slots")
+    return 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())