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btex: multithreaded finalising

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minjaesong
2024-05-16 02:01:47 +09:00
parent 7320a14a4d
commit b963e0d3f2
2 changed files with 34 additions and 11 deletions
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37
src/net/torvald/btex/BTeXDocument.kt
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@@ -8,6 +8,7 @@ import com.badlogic.gdx.graphics.g2d.TextureRegion
import com.badlogic.gdx.utils.Disposable
import net.torvald.terrarum.FlippingSpriteBatch
import net.torvald.terrarum.ceilToInt
import net.torvald.terrarum.concurrent.ThreadExecutor
import net.torvald.terrarum.imagefont.TinyAlphNum
import net.torvald.terrarum.modulecomputers.virtualcomputer.tvd.archivers.ClusteredFormatDOM
import net.torvald.terrarum.modulecomputers.virtualcomputer.tvd.archivers.Clustfile
@@ -21,6 +22,7 @@ import net.torvald.terrarumsansbitmap.gdx.CodepointSequence
import net.torvald.terrarumsansbitmap.gdx.TerrarumSansBitmap
import java.io.File
import java.io.RandomAccessFile
import java.util.concurrent.Callable
import java.util.zip.Deflater
/**
@@ -161,14 +163,35 @@ class BTeXDocument : Disposable {
pageTextures = Array(pages.size) { null }
pagePixmaps = Array(pages.size) { null }
pages.forEachIndexed { pageNum, page ->
val pixmap = Pixmap(pageDimensionWidth, pageDimensionHeight, Pixmap.Format.RGBA8888).also {
it.blending = Pixmap.Blending.SourceOver
it.filter = Pixmap.Filter.NearestNeighbour
if (!multithread) {
pages.forEachIndexed { pageNum, page ->
val pixmap = Pixmap(pageDimensionWidth, pageDimensionHeight, Pixmap.Format.RGBA8888).also {
it.blending = Pixmap.Blending.SourceOver
it.filter = Pixmap.Filter.NearestNeighbour
}
page.renderToPixmap(pixmap, 0, 0, pageMarginH, pageMarginV)
printPageNumber(pixmap, pageNum, 0, 0)
pagePixmaps[pageNum] = pixmap
}
}
else {
val jobs = pages.indices.map { pageNum -> Callable {
val page = pages[pageNum]
val pixmap = Pixmap(pageDimensionWidth, pageDimensionHeight, Pixmap.Format.RGBA8888).also {
it.blending = Pixmap.Blending.SourceOver
it.filter = Pixmap.Filter.NearestNeighbour
}
page.renderToPixmap(pixmap, 0, 0, pageMarginH, pageMarginV)
printPageNumber(pixmap, pageNum, 0, 0)
pagePixmaps[pageNum] = pixmap
} }
// my experiment tells 4, 8, 16, 32 threads all perform the same
ThreadExecutor(Runtime.getRuntime().availableProcessors().div(2).coerceIn(1..4)).also {
it.renew()
it.submitAll(jobs)
it.join()
}
page.renderToPixmap(pixmap, 0, 0, pageMarginH, pageMarginV)
printPageNumber(pixmap, pageNum, 0, 0)
pagePixmaps[pageNum] = pixmap
}
isFinalised = true