mth/ebiten
1
0
Fork 0
mirror of https://github.com/hajimehoshi/ebiten.git synced 2025-01-24 18:02:02 +01:00
Code Issues Packages Projects Releases Wiki Activity

internal/graphics: optimize imageSrcNUnsafeAt

Browse Source
This commit is contained in:
Hajime Hoshi 2022-07-11 01:06:07 +09:00
parent b27b7ec483
commit b8367da7e2
1 changed files with 3 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
internal/graphics/shader.go
View File

@ -93,11 +93,9 @@ func imageSrc%[1]dUnsafeAt(pos vec2) vec4 {
func imageSrc%[1]dAt(pos vec2) vec4 {
// pos is the position in texels of the source texture (= 0th image's texture).
return texture2D(__t%[1]d, %[2]s) *
step(__textureSourceRegionOrigin.x, pos.x) *
(1 - step(__textureSourceRegionOrigin.x + __textureSourceRegionSize.x, pos.x)) *
step(__textureSourceRegionOrigin.y, pos.y) *
(1 - step(__textureSourceRegionOrigin.y + __textureSourceRegionSize.y, pos.y))
// If pos is in the region, the result is (1, 1). Otherwise, either element is 0.
in := step(__textureSourceRegionOrigin, pos) - step(__textureSourceRegionOrigin + __textureSourceRegionSize, pos)
return texture2D(__t%[1]d, %[2]s) * in.x * in.y
}
`, i, pos)
}