IssueTracker

Component used:
implementation("androidx.wear.compose:compose-navigation:1.4.0-alpha07")
SwipeDismissableNavHost

Version used: 1.4.0-alpha07

Device: Samsung SM-890, Android 13, Wear OS 4.0

The following exception is thrown randomly when changing screens on a Wear OS app using the latest compose navigation library:

FATAL EXCEPTION: main
java.lang.IllegalArgumentException: red = 1.0, green = 1.0, blue = 1.0, alpha = -8.34465E-9 outside the range for sRGB IEC61966-2.1 (id=0, model=Rgb)
at androidx.compose.ui.graphics.InlineClassHelperKt.throwIllegalArgumentException(InlineClassHelper.kt:26)
at androidx.compose.ui.graphics.ColorKt.Color(Color.kt:722)
at androidx.compose.ui.graphics.Color.copy-wmQWz5c(Color.kt:259)
at androidx.compose.ui.graphics.Color.copy-wmQWz5c$default(Color.kt:254)
at androidx.wear.compose.navigation.SwipeDismissableNavHostKt$BoxedStackEntryContent$2$2$1.invoke(SwipeDismissableNavHost.kt:499)
at androidx.wear.compose.navigation.SwipeDismissableNavHostKt$BoxedStackEntryContent$2$2$1.invoke(SwipeDismissableNavHost.kt:492)
at androidx.compose.ui.draw.DrawBackgroundModifier.draw(DrawModifier.kt:127)

It looks like the error is in this code inside SwipeDismissableNavHost, that calculates the alpha using lerp. The value is not 0f as expected, but -8.34465E-9 which is not accepted by sRGB IEC61966-2.1

                if (layerColor != Color.Unspecified) {
                    Canvas(Modifier.fillMaxSize()) {
                        val absoluteProgression =
                            ((animatable.value - 0.25f).coerceAtLeast(0f) / 0.75f).coerceAtMost(1f)
                        val easedProgression = NAV_HOST_ENTER_TRANSITION_EASING_STANDARD
                            .transform(absoluteProgression)
                        val alpha = lerp(0.07f, 0f, easedProgression)
                        if (isRoundDevice) {
                            drawCircle(color = layerColor.copy(alpha))
                        } else {
                            drawRect(color = layerColor.copy(alpha))
                        }
                    }
                }