Added fallback to raster if skia failed to create hardware context.

samples/SkijaInjectSample/src/main/kotlin/SkijaInjectSample/App.kt

@@ -15,7 +15,7 @@ import kotlin.math.cos
 import kotlin.math.sin
 
 fun main(args: Array<String>) {
-    System.setProperty("skiko.renderApi", "RASTER")
+    // System.setProperty("skiko.renderApi", "RASTER")
     repeat(1) {
         createWindow("window $it")
     }

skiko/src/jvmMain/kotlin/org/jetbrains/skiko/SkiaLayer.kt

@@ -2,7 +2,9 @@ package org.jetbrains.skiko
 
 import org.jetbrains.skija.*
 import org.jetbrains.skiko.redrawer.Redrawer
+import org.jetbrains.skiko.redrawer.RasterRedrawer
 import org.jetbrains.skiko.context.createContextHandler
+import org.jetbrains.skiko.context.RasterContextHandler
 import java.awt.Graphics
 import javax.swing.SwingUtilities.isEventDispatchThread
 
@@ -16,7 +18,7 @@ open class SkiaLayer : HardwareLayer() {
     var renderer: SkiaRenderer? = null
     val clipComponents = mutableListOf<ClipRectangle>()
 
-    private val skijaState = createContextHandler(this)
+    internal var skijaState = createContextHandler(this)
 
     @Volatile
     private var isDisposed = false
@@ -101,7 +103,10 @@ open class SkiaLayer : HardwareLayer() {
     override fun draw() {
         check(!isDisposed)
         skijaState.apply {
-            initContext()
+            if (!initContext()) {
+                fallbackToRaster()
+                return
+            }
             initCanvas()
             clearCanvas()
             synchronized(pictureLock) {
@@ -127,4 +132,11 @@ open class SkiaLayer : HardwareLayer() {
             true
         )
     }
+
+    private fun fallbackToRaster() {
+        println("Falling back to software rendering...")
+        skijaState = RasterContextHandler(this)
+        redrawer = RasterRedrawer(this)
+        needRedraw()
+    }
 }

skiko/src/jvmMain/kotlin/org/jetbrains/skiko/context/ContextHandler.kt

@@ -46,7 +46,7 @@ internal abstract class ContextHandler(val layer: HardwareLayer) {
     var surface: Surface? = null
     var canvas: Canvas? = null
 
-    abstract fun initContext()
+    abstract fun initContext(): Boolean
 
     abstract fun initCanvas()
 

skiko/src/jvmMain/kotlin/org/jetbrains/skiko/context/MetalContextHandler.kt

@@ -10,10 +10,16 @@ import org.jetbrains.skiko.makeMetalContext
 import org.jetbrains.skiko.makeMetalRenderTarget
 
 internal class MetalContextHandler(layer: HardwareLayer) : ContextHandler(layer) {
-    override fun initContext() {
-        if (context == null) {
-            context = makeMetalContext()
+    override fun initContext(): Boolean {
+        try {
+            if (context == null) {
+                context = makeMetalContext()
+            }
+        } catch (e: Exception) {
+            println("Failed to create Skia Metal context!")
+            return false
         }
+        return true
     }
 
     override fun initCanvas() {

skiko/src/jvmMain/kotlin/org/jetbrains/skiko/context/OpenGLContextHandler.kt

@@ -12,10 +12,16 @@ import org.jetbrains.skiko.makeGLRenderTarget
 import org.jetbrains.skiko.OpenGLApi
 
 internal class OpenGLContextHandler(layer: HardwareLayer) : ContextHandler(layer) {
-    override fun initContext() {
-        if (context == null) {
-            context = makeGLContext()
+    override fun initContext(): Boolean {
+        try {
+            if (context == null) {
+                context = makeGLContext()
+            }
+        } catch (e: Exception) {
+            println("Failed to create Skia OpenGL context!")
+            return false
         }
+        return true
     }
 
     override fun initCanvas() {

skiko/src/jvmMain/kotlin/org/jetbrains/skiko/context/RasterContextHandler.kt

@@ -33,8 +33,9 @@ internal class RasterContextHandler(layer: HardwareLayer) : ContextHandler(layer
     var imageData: ByteArray? = null
     var raster: WritableRaster? = null
 
-    override fun initContext() {
+    override fun initContext(): Boolean {
         // Raster does not need context
+        return true
     }
 
     override fun initCanvas() {