Render OpenGL content onto a Compose Canvas.
- JVM + Linux
This library uses a custom skiko+skia build which uses EGL and GLES instead of GLX and Desktop GL on Linux:
You can add the dependency to your project as follows:
repositories {
maven("https://reposilite.silenium.dev/releases") {
name = "silenium-snapshots"
}
}
dependencies {
implementation("dev.silenium.compose:compose-gl:0.1.0")
}
@Composable
fun App() {
Box(contentAlignment = Alignment.TopStart) {
// Button behind the GLSurfaceView -> Alpha works, clicks will be passed through
Button(onClick = {}) {
Text("Click me!")
}
// Size needs to be specified, as the default size is 0x0
// Internally uses a Compose Canvas, so it can be used like any other Composable
GLSurfaceView(modifier = Modifier.size(100.dp)) {
// Translucent grey
GLES30.glClearColor(0.5f, 0.5f, 0.5f, 0.5f)
GLES30.glClear(GL_COLOR_BUFFER_BIT)
// Render with 30 FPS, this should be the time from start of frame n to frame n+1, the internal logic subtracts render time and other delays
// Defaults to 60 FPS
// Will be replaced with a better solution in the future
redrawAfter((1000.0 / 30).milliseconds)
}
}
}
// awaitApplication{} is required for now. For some reason, the JVM gets stuck on shutdown, when using application{}.
suspend fun main() = awaitApplication {
Window(onCloseRequest = ::exitApplication) {
App()
}
}