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multithread light: forget about it

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minjaesong
2020-11-20 14:08:18 +09:00
parent ab780fd246
commit 44c11cef76
3 changed files with 18 additions and 21 deletions
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3
.gitattributes vendored
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@@ -5,4 +5,5 @@
*.opus filter=lfs diff=lfs merge=lfs -text
*.pdf filter=lfs diff=lfs merge=lfs -text
*.zip filter=lfs diff=lfs merge=lfs -text
*.kra filter=lfs diff=lfs merge=lfs -text
*.kra filter=lfs diff=lfs merge=lfs -text
*.png filter=lfs diff=lfs merge=lfs -text

2
src/net/torvald/terrarum/concurrent/ThreadExecutor.kt
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@@ -56,7 +56,7 @@ object ThreadExecutor {
// https://stackoverflow.com/questions/28818494/threads-stopping-prematurely-for-certain-values
fun join() {
println("ThreadExecutor.join")
//println("ThreadExecutor.join")
isOpen = false
futures.forEach {
try {

34
src/net/torvald/terrarum/worlddrawer/LightmapRendererNew.kt
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@@ -10,6 +10,7 @@ import net.torvald.terrarum.AppLoader.printdbg
import net.torvald.terrarum.blockproperties.Block
import net.torvald.terrarum.blockproperties.BlockCodex
import net.torvald.terrarum.blockproperties.Fluid
import net.torvald.terrarum.concurrent.ThreadExecutor
import net.torvald.terrarum.gameactors.ActorWithBody
import net.torvald.terrarum.gameactors.Luminous
import net.torvald.terrarum.gameworld.BlockAddress
@@ -357,28 +358,23 @@ object LightmapRenderer {
// each usually takes 8..12 ms total when not threaded
// - with direct memory access of world array and pre-calculating things in the start of the frame,
// I was able to pull out 3.5..5.5 ms! With abhorrently many occurrences of segfaults I had to track down...
// - with 'NEWLIGHT2', I was able to pull ~2 ms!
//
// multithreading - forget about it; overhead is way too big and for some reason i was not able to
// resolve the 'noisy shit' artefact
AppLoader.measureDebugTime("Renderer.LightRuns") {
if (!AppLoader.getConfigBoolean("multithreadedlight")) {
AppLoader.measureDebugTime("Renderer.LightRuns") {
// To save you from pains:
// - Per-channel light updating is actually slower
// BELOW NOTES DOES NOT APPLY TO 'NEWLIGHT2' LIGHT SWIPER
// - It seems 5-pass lighting is needed to resonably eliminate the dark spot (of which I have zero idea
// why dark spots appear in the first place)
// - Multithreading? I have absolutely no idea.
// - If you naively slice the screen (job area) to multithread, the seam will appear.
// To save you from pains:
// - Per-channel light updating is actually slower
// BELOW NOTES DOES NOT APPLY TO 'NEWLIGHT2' LIGHT SWIPER
// - It seems 5-pass lighting is needed to resonably eliminate the dark spot (of which I have zero idea
// why dark spots appear in the first place)
// - Multithreading? I have absolutely no idea.
// - If you naively slice the screen (job area) to multithread, the seam will appear.
//r3();r4();r1();r2();r3();
r1();r2();r3();r4()
//r1();r2();r3();r4()
}
}
else if (world.worldIndex != -1) { // to avoid updating on the null world
AppLoader.measureDebugTime("Renderer.LightRuns") {
}
r1();r2();r3();r4()
}
}
private fun buildLanternmap(actorContainers: Array<out List<ActorWithBody>?>) {