52 lines
2.5 KiB
PowerShell
52 lines
2.5 KiB
PowerShell
param(
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# A GLSL source to append after the generated wrapper's library instead of the call-every-function
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# body; tools\compile-glsl.ps1 -Body 'float x = lerp(0.0, 1.0, 0.5);' is the negative control.
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[string]$Body = "",
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# Also concatenate shaders\CultMath.Phacelle.glsl (MPL-2.0) after CultMath.glsl, as a consumer that
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# calls cultmath_phacelle does. Without it the wrapper is the MIT library alone.
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[switch]$Phacelle,
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[string]$GlslangPath = ""
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)
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$ErrorActionPreference = "Stop"
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$repoRoot = Resolve-Path (Join-Path $PSScriptRoot "..")
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if (-not $GlslangPath) {
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$found = Get-ChildItem -LiteralPath (Join-Path $repoRoot ".tools\glslang\current") -Recurse -File -Include "glslang.exe", "glslangValidator.exe" -ErrorAction SilentlyContinue | Select-Object -First 1
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if ($found) { $GlslangPath = $found.FullName }
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}
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# The wrapper is what a WebGL2 consumer writes: its own #version line and precision, then the library
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# by string concatenation (GLSL has no #include), then a fragment shader that calls every public
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# function once with zero arguments of its declared types.
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$library = Get-Content -LiteralPath (Join-Path $repoRoot "shaders\CultMath.glsl") -Raw
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if ($Phacelle) {
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$library += Get-Content -LiteralPath (Join-Path $repoRoot "shaders\CultMath.Phacelle.glsl") -Raw
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}
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$calls = foreach ($match in [regex]::Matches($library, '(?m)^\w+\s+(cultmath_\w+)\s*\(([^)]*)\)')) {
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$arguments = foreach ($parameter in ($match.Groups[2].Value -split ',')) {
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$type = ($parameter.Trim() -split '\s+')[0]
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if ($type -eq 'int' -or $type -like 'ivec*') { "$type(0)" }
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elseif ($type -eq 'uint' -or $type -like 'uvec*') { "$type(0u)" }
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else { "$type(0.0)" }
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}
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" $($match.Groups[1].Value)($($arguments -join ', '));"
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}
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if (-not $Body) {
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$Body = $calls -join "`n"
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}
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$wrapper = "#version 300 es`nprecision highp float;`nprecision highp int;`n$library`nout vec4 cultmathColor;`nvoid main()`n{`n$Body`n cultmathColor = vec4(0.0);`n}`n"
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$wrapperPath = Join-Path $repoRoot ".tools\glsl\cultmath-wrapper.frag"
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New-Item -ItemType Directory -Force -Path (Split-Path -Parent $wrapperPath) | Out-Null
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[System.IO.File]::WriteAllText($wrapperPath, $wrapper)
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Write-Host "wrapper: $wrapperPath ($(@($calls).Count) functions)"
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if (-not $GlslangPath -or -not (Test-Path $GlslangPath)) {
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throw "glslang not found. Run tools\get-glslang.ps1 first or pass -GlslangPath."
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}
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& $GlslangPath -S frag $wrapperPath
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if ($LASTEXITCODE -ne 0) {
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throw "glslang failed with exit code $LASTEXITCODE."
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}
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