mirror of
https://github.com/InstanceBrick/nightcap.git
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dim-ghub
1854e00934
vr.anti_aliasing now takes fxaa, smaa or off. SMAA runs the reference implementation (third_party/smaa, MIT) at its High preset: luma edge detection and blending weights into per-eye images, then neighborhood blending into the runtime's swapchain through FXAA's final pass. Its area and search lookup textures are uploaded once per device. If SMAA cannot be set up, the eyes fall back to FXAA. Also export vr.anti_aliasing from config.yaml: the VR backend reads the process environment, so the setting only worked as an environment variable. On a Quest 2 through SteamVR at 120 Hz (2136x2236 per eye), SMAA ran at 118.6 fps against 118.8 for FXAA, with p99 frame times of 10.1 and 9.5 ms.
90 lines
3.1 KiB
Python
Executable File
90 lines
3.1 KiB
Python
Executable File
#!/usr/bin/env python3
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"""Regenerate src/vr/vr_shaders_spirv.h from shaders/vr with glslc.
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The header is checked in so a build never needs a shader compiler. The SMAA
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passes include SMAA.hlsl from the third_party/smaa submodule. Run this
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after editing a shader; VrShaders.SpirvMatchesSources checks it when glslc is
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installed.
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"""
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import argparse
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import pathlib
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import struct
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import subprocess
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import sys
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import tempfile
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ROOT = pathlib.Path(__file__).resolve().parent.parent
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SHADERS = [
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("kFullscreenVertexSpirv", "shaders/vr/fullscreen.vert"),
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("kFxaaFragmentSpirv", "shaders/vr/fxaa.frag"),
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("kSmaaEdgesVertexSpirv", "shaders/vr/smaa_edges.vert"),
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("kSmaaEdgesFragmentSpirv", "shaders/vr/smaa_edges.frag"),
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("kSmaaWeightsVertexSpirv", "shaders/vr/smaa_weights.vert"),
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("kSmaaWeightsFragmentSpirv", "shaders/vr/smaa_weights.frag"),
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("kSmaaBlendVertexSpirv", "shaders/vr/smaa_blend.vert"),
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("kSmaaBlendFragmentSpirv", "shaders/vr/smaa_blend.frag"),
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]
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# SMAA.hlsl comes from the third_party/smaa submodule.
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INCLUDES = [ROOT / "third_party/smaa"]
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OUTPUT = ROOT / "src/vr/vr_shaders_spirv.h"
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def compile_words(glslc, source):
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with tempfile.TemporaryDirectory() as directory:
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output = pathlib.Path(directory) / "shader.spv"
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subprocess.run(
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[glslc, "-O", "--target-env=vulkan1.0"] +
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["-I" + str(path) for path in INCLUDES] +
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[str(ROOT / source), "-o", str(output)],
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check=True)
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data = output.read_bytes()
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return struct.unpack("<%dI" % (len(data) // 4), data)
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def render(glslc):
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lines = [
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"// Generated by scripts/generate_vr_shaders.py from shaders/vr. Do not edit.",
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"#ifndef MOCKTAIL_VR_VR_SHADERS_SPIRV_H_",
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"#define MOCKTAIL_VR_VR_SHADERS_SPIRV_H_",
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"",
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"#include <cstdint>",
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"",
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"namespace mocktail::vr {",
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"",
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]
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for name, source in SHADERS:
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words = compile_words(glslc, source)
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lines.append("// %s" % source)
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lines.append("inline constexpr std::uint32_t %s[] = {" % name)
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for start in range(0, len(words), 6):
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chunk = ", ".join("0x%08x" % word for word in words[start:start + 6])
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lines.append(" %s," % chunk)
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lines.append("};")
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lines.append("")
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lines += ["} // namespace mocktail::vr", "",
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"#endif // MOCKTAIL_VR_VR_SHADERS_SPIRV_H_", ""]
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return "\n".join(lines)
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def main():
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parser = argparse.ArgumentParser(description=__doc__)
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parser.add_argument("--glslc", default="glslc")
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parser.add_argument("--check", action="store_true",
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help="exit 1 when the header is out of date")
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arguments = parser.parse_args()
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text = render(arguments.glslc)
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if arguments.check:
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current = OUTPUT.read_text() if OUTPUT.exists() else ""
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if current != text:
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print("%s is out of date; run %s" % (OUTPUT, __file__),
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file=sys.stderr)
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return 1
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return 0
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OUTPUT.write_text(text)
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return 0
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if __name__ == "__main__":
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sys.exit(main())
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