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light: slightly improved performance with careful skipping

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(hopefully...)
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minjaesong
2019-01-17 06:43:28 +09:00
parent f689e1de99
commit e209967730
1 changed files with 77 additions and 9 deletions
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86
src/net/torvald/terrarum/worlddrawer/LightmapRendererNew.kt
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@@ -103,10 +103,12 @@ object LightmapRenderer {
const val MUL_FLOAT = MUL / 256f
const val DIV_FLOAT = 256f / MUL
internal var for_x_start: Int = 0
internal var for_y_start: Int = 0
internal var for_x_end: Int = 0
internal var for_y_end: Int = 0
internal var for_x_start = 0
internal var for_y_start = 0
internal var for_x_end = 0
internal var for_y_end = 0
internal var for_x = 0
internal var for_y = 0
//inline fun getLightRawPos(x: Int, y: Int) = lightmap[y][x]
@@ -199,7 +201,10 @@ object LightmapRenderer {
if (WorldCamera.x in -(TILE_SIZE - 1)..-1) for_x_start -= 1 // another edge-case fix
for_x_end = for_x_start + WorldCamera.width / TILE_SIZE + 3
for_y_end = for_y_start + WorldCamera.height / TILE_SIZE + 2 // same fix as above
for_y_end = for_y_start + WorldCamera.height / TILE_SIZE + 3 // same fix as above
for_x = (for_x_end - for_x_start) / 2
for_y = (for_y_end - for_y_start) / 2
/**
* Updating order:
@@ -229,6 +234,9 @@ object LightmapRenderer {
if (!AppLoader.getConfigBoolean("multithreadedlight")) {
//val workMap = lightmap.copyOf()
// The skipping is dependent on how you get ambient light,
// in this case we have 'spillage' due to the fact calculate() samples 3x3 area.
// Round 2
AppLoader.debugTimers["Renderer.Light1"] = measureNanoTime {
for (y in for_y_end + overscan_open downTo for_y_start) {
@@ -238,37 +246,97 @@ object LightmapRenderer {
}
}
/* ..#####
..#####
..#####
..#O###
...####
.......
......↖ shaded area: skip update*/
// Round 3
AppLoader.debugTimers["Renderer.Light2"] = measureNanoTime {
for (y in for_y_end + overscan_open downTo for_y_start) {
for (x in for_x_end + overscan_open downTo for_x_start) {
val range = (
if (y > for_y + 1)
for_x_end + overscan_open
else if (y == for_y + 1)
for_x - 1
else
for_x - 2
) downTo for_x_start
for (x in range) {
setLightOf(lightmap, x, y, calculate(x, y, 2))
}
}
}
/* #####.↙
#####..
#####..
###O#..
####...
.......
....... shaded area: skip update*/
// Round 4
AppLoader.debugTimers["Renderer.Light3"] = measureNanoTime {
for (y in for_y_start - overscan_open..for_y_end) {
for (x in for_x_end + overscan_open downTo for_x_start) {
val range = for_x_end + overscan_open downTo (
if (y > for_y + 1)
for_x_start
else if (y == for_y + 1)
for_x + 1
else
for_x + 2
)
for (x in range) {
setLightOf(lightmap, x, y, calculate(x, y, 3))
}
}
}
/* ↘......
.......
####...
###O#..
#####..
#####..
#####.. shaded area: skip update*/
// Round 1
AppLoader.debugTimers["Renderer.Light4"] = measureNanoTime {
for (y in for_y_start - overscan_open..for_y_end) {
for (x in for_x_start - overscan_open..for_x_end) {
val range = (
if (y > for_y - 1)
for_x_start - overscan_open
else if (y == for_y - 1)
for_x + 1
else
for_x + 2
) .. for_x_end
for (x in range) {
setLightOf(lightmap, x, y, calculate(x, y, 4))
}
}
}
/* .......
.......
...####
..#O###
..#####
..#####
↗.##### shaded area: skip update*/
// Round 2
AppLoader.debugTimers["Renderer.Light5"] = measureNanoTime {
for (y in for_y_end + overscan_open downTo for_y_start) {
for (x in for_x_start - overscan_open..for_x_end) {
val range = for_x_start - overscan_open .. (
if (y > for_y - 1)
for_x_end
else if (y == for_y - 1)
for_x - 1
else
for_x - 2
)
for (x in range) {
setLightOf(lightmap, x, y, calculate(x, y, 5))
}
}