Bidirectional IPC packets, support view tree operations for external debugger, support for offscreen GameWindow and rendering and initial incremental compilation without Gradle for faster, more-stable hot reloading

.github/workflows/DEPLOY.yml

@@ -22,7 +22,7 @@ env:
 
 jobs:
   publish:
-    runs-on: macos-11
+    runs-on: macos-latest
     steps:
       - { name: Checkout, uses: actions/checkout@v3 }
       - { name: Use Node.js 20.x, uses: actions/setup-node@v3, with: { node-version: 20.x } }

.github/workflows/TEST.yml

@@ -25,10 +25,10 @@ jobs:
       fail-fast: false # Once working, comment this
       matrix:
         include:
-          - { outputKey: testIos, os: macos-11, testTask: iosX64Test, precompileTask: compileTestKotlinIosX64, enableKotlinNative: true }
+          - { outputKey: testIos, os: macos-latest, testTask: iosX64Test, precompileTask: compileTestKotlinIosX64, enableKotlinNative: true }
           - { outputKey: testJs, os: ubuntu-latest, testTask: "wasmJsBrowserTest", buildTasks: "jsBrowserTest", precompileTask: "wasmJsTestClasses jsTestClasses" }
           - { outputKey: testAndroid, os: ubuntu-latest, enableAndroid: true, precompileTask: "compileDebugAndroidTestSources" }
-          - { outputKey: testJvmMacos, os: macos-11, testTask: jvmTest, precompileTask: "compileTestKotlinJvm compileTestKotlin" }
+          - { outputKey: testJvmMacos, os: macos-latest, testTask: jvmTest, precompileTask: "compileTestKotlinJvm compileTestKotlin" }
           - { outputKey: testJvmLinux, os: ubuntu-latest, testTask: jvmTest, precompileTask: "compileTestKotlinJvm compileTestKotlin", enableKotlinNative: true, enableSandbox: true, e2e: true }
           - { outputKey: testJvmWindows, os: windows-latest, testTask: jvmTest, precompileTask: "compileTestKotlinJvm compileTestKotlin" }
     #if: ${{ needs.changes.outputs[matrix.outputKey] == 'true' }}

build.gradle.kts

@@ -1,4 +1,6 @@
 import korlibs.root.*
+import org.jetbrains.kotlin.backend.common.serialization.*
+import org.jetbrains.kotlin.gradle.tasks.*
 
 plugins {
     //id "com.dorongold.task-tree" version "2.1.1"
@@ -91,3 +93,10 @@ tasks {
         )
     }
 }
+
+afterEvaluate {
+    println("-----------")
+    println(tasks.findByPath(":korge:jvmMainClasses")!!::class)
+    println(tasks.findByPath(":korge:compileKotlinJvm")!!::class)
+    //org.jetbrains.kotlin.gradle.tasks.KotlinCompile
+}

buildSrc/src/main/kotlin/korlibs/korge/gradle/targets/android/Android.kt

@@ -152,7 +152,8 @@ const val ANDROID_DEFAULT_MIN_SDK = 21 // Android 5.0
 const val ANDROID_DEFAULT_COMPILE_SDK = 33
 const val ANDROID_DEFAULT_TARGET_SDK = 33
 
-val GRADLE_JAVA_VERSION_STR = "11"
+//val GRADLE_JAVA_VERSION_STR = "11"
+val GRADLE_JAVA_VERSION_STR = "17"
 
 val ANDROID_JAVA_VERSION = JavaVersion.VERSION_1_8
 //val ANDROID_JAVA_VERSION = JavaVersion.VERSION_11

buildSrc/src/main/kotlin/korlibs/korge/gradle/targets/jvm/KorgeJavaExec.kt

@@ -113,7 +113,8 @@ open class KorgeJavaExecWithAutoreload : KorgeJavaExec() {
             )
 
             environment("KORGE_AUTORELOAD", "true")
-
+            environment("KORGE_IPC", project.findProperty("korge.ipc")?.toString())
+            environment("KORGE_HEADLESS", project.findProperty("korge.headless")?.toString())
         }
     }
 }

buildSrc/src/main/kotlin/korlibs/root/RootKorlibsPlugin.kt

@@ -812,6 +812,7 @@ fun Project.mustAutoconfigureKMM(): Boolean =
         project.name != "korge-kotlin-plugin" &&
         project.name != "korge-reload-agent" &&
         project.name != "korge-ipc" &&
+        project.name != "korge-kotlin-compiler" &&
         project.name != "korge-benchmarks" &&
         project.hasBuildGradle()
 

gradle/libs.versions.toml

@@ -35,6 +35,10 @@ korlibs-inject = { module = "com.soywiz:korlibs-inject", version.ref = "korlibs"
 korlibs-template = { module = "com.soywiz:korlibs-template", version.ref = "korlibs" }
 korlibs-time = { module = "com.soywiz:korlibs-time", version.ref = "korlibs" }
 korlibs-serialization = { module = "com.soywiz:korlibs-serialization", version.ref = "korlibs" }
+korlibs-datastructure = { module = "com.soywiz:korlibs-datastructure", version.ref = "korlibs" }
+korlibs-datastructure-core = { module = "com.soywiz:korlibs-datastructure-core", version.ref = "korlibs" }
+korlibs-memory = { module = "com.soywiz:korlibs-memory", version.ref = "korlibs" }
+korlibs-io-stream = { module = "com.soywiz:korlibs-io-stream", version.ref = "korlibs" }
 jackson-databind = { module = "com.fasterxml.jackson.core:jackson-databind", version.ref = "jackson" }
 jackson-module-kotlin = { module = "com.fasterxml.jackson.module:jackson-module-kotlin", version.ref = "jackson" }
 junit = { module = "junit:junit", version.ref = "junit" }

korge-core/src/korlibs/event/Events.kt

@@ -465,14 +465,15 @@ data class ChangeEvent(var oldValue: Any? = null, var newValue: Any? = null) : T
     }
 }
 
-data class ReshapeEvent(var x: Int = 0, var y: Int = 0, var width: Int = 0, var height: Int = 0) : TypedEvent<ReshapeEvent>(ReshapeEvent) {
+data class ReshapeEvent(var x: Int = 0, var y: Int = 0, var width: Int = 0, var height: Int = 0, var setPos: Boolean = true) : TypedEvent<ReshapeEvent>(ReshapeEvent) {
     companion object : EventType<ReshapeEvent>
 
     fun copyFrom(other: ReshapeEvent) {
         this.x = other.x
         this.y = other.y
         this.width = other.width
         this.height = other.height
+        this.setPos = other.setPos
     }
 }
 

korge-core/src/korlibs/kgl/KmlGlContext.kt

@@ -1,9 +1,71 @@
 package korlibs.kgl
 
-import korlibs.io.lang.*
-
 expect fun KmlGlContextDefault(window: Any? = null, parent: KmlGlContext? = null): KmlGlContext
 
+class OffscreenKmlGlContext(
+    val colorRenderbuffer: Int,
+    val depthRenderbuffer: Int,
+    val framebuffer: Int,
+    val ctx: KmlGlContext,
+    var width: Int = 0,
+    var height: Int = 0,
+) {
+    val gl get() = ctx.gl
+
+    fun setSize(width: Int, height: Int) {
+        this.width = width
+        this.height = height
+
+        val GL_RGBA8 = 0x8058
+
+        gl.bindRenderbuffer(KmlGl.RENDERBUFFER, colorRenderbuffer)
+        gl.renderbufferStorage(KmlGl.RENDERBUFFER, GL_RGBA8, width, height)
+        gl.bindRenderbuffer(KmlGl.RENDERBUFFER, 0)
+
+        // Build the texture that will serve as the depth attachment for the framebuffer.
+        gl.bindRenderbuffer(KmlGl.RENDERBUFFER, depthRenderbuffer)
+        gl.renderbufferStorage(KmlGl.RENDERBUFFER, KmlGl.DEPTH_COMPONENT, width, height)
+        gl.bindRenderbuffer(KmlGl.RENDERBUFFER, 0)
+    }
+
+    fun doClear() {
+        gl.bindFramebuffer(KmlGl.FRAMEBUFFER, framebuffer)
+        gl.clear(KmlGl.COLOR_BUFFER_BIT or KmlGl.DEPTH_BUFFER_BIT)
+    }
+}
+
+fun OffsetKmlGlContext(fboWidth: Int, fboHeight: Int, doUnset: Boolean = true): KmlGlContext {
+    return NewOffsetKmlGlContext(fboWidth, fboHeight, doUnset).ctx
+}
+
+fun NewOffsetKmlGlContext(fboWidth: Int, fboHeight: Int, doUnset: Boolean = true): OffscreenKmlGlContext {
+    val ctx = KmlGlContextDefault()
+    ctx.set()
+
+    val gl = ctx.gl
+
+    // Build the texture that will serve as the color attachment for the framebuffer.
+    val colorRenderbuffer = gl.genRenderbuffer()
+    val depthRenderbuffer = gl.genRenderbuffer()
+    val framebuffer = gl.genFramebuffer()
+    val out = OffscreenKmlGlContext(colorRenderbuffer, depthRenderbuffer, framebuffer, ctx)
+
+    out.setSize(fboWidth, fboHeight)
+
+    // Build the framebuffer.
+    gl.bindFramebuffer(KmlGl.FRAMEBUFFER, framebuffer)
+    gl.framebufferRenderbuffer(KmlGl.FRAMEBUFFER, KmlGl.COLOR_ATTACHMENT0, KmlGl.RENDERBUFFER, colorRenderbuffer)
+    gl.framebufferRenderbuffer(KmlGl.FRAMEBUFFER, KmlGl.DEPTH_ATTACHMENT, KmlGl.RENDERBUFFER, depthRenderbuffer)
+
+    val status = gl.checkFramebufferStatus(KmlGl.FRAMEBUFFER)
+    //if (status != GL_FRAMEBUFFER_COMPLETE)
+    // Error
+
+    if (doUnset) ctx.unset()
+
+    return out
+}
+
 inline fun KmlGlContextDefaultTemp(block: (KmlGl) -> Unit) {
     KmlGlContextDefault().use {
         it.set()

korge-core/src/korlibs/render/GameWindow.kt

@@ -1,6 +1,7 @@
 package korlibs.render
 
 import korlibs.concurrent.lock.*
+import korlibs.concurrent.thread.*
 import korlibs.datastructure.*
 import korlibs.event.*
 import korlibs.graphics.*
@@ -261,6 +262,9 @@ open class GameWindow :
         return onEvent(RenderEvent, block)
     }
 
+    val fastCounterTimePerFrame: FastDuration get() = (1_000_000.0 / fps).fastMicroseconds
+    val fastTimePerFrame: FastDuration get() = fastCounterTimePerFrame
+
     val counterTimePerFrame: Duration get() = (1_000_000.0 / fps).microseconds
     val timePerFrame: Duration get() = counterTimePerFrame
 
@@ -390,11 +394,27 @@ open class GameWindow :
         launchImmediately(getCoroutineDispatcherWithCurrentContext()) {
             entry()
         }
-        while (running) {
-            val elapsed = frame()
-            val available = counterTimePerFrame - elapsed
-            if (available > TimeSpan.ZERO) delay(available)
-        }
+        //withContext(getCoroutineDispatcherWithCurrentContext()) {
+            //delay(1L)
+            while (running) {
+                var elapsed: FastDuration
+                val realElapsed = measureTime {
+                    elapsed = frame()
+                }
+                val available = fastCounterTimePerFrame - elapsed
+                //val available = fastCounterTimePerFrame - realElapsed
+                if (available > FastDuration.ZERO) {
+                    //println("delay=$available, elapsed=$elapsed, realElapsed=$realElapsed, fastCounterTimePerFrame=$fastCounterTimePerFrame")
+                    loopDelay(available)
+                    //NativeThread.sleepExact(available)
+                    //NativeThread.sleepExact(available)
+                }
+            }
+        //}
+    }
+
+    open suspend fun loopDelay(time: FastDuration) {
+        delay(time)
     }
 
     // Referenced from korge-plugins repo
@@ -567,7 +587,7 @@ open class GameWindow :
         dispatchReshapeEventEx(x, y, width, height, width, height)
     }
 
-    fun dispatchReshapeEventEx(x: Int, y: Int, width: Int, height: Int, fullWidth: Int, fullHeight: Int) {
+    fun dispatchReshapeEventEx(x: Int, y: Int, width: Int, height: Int, fullWidth: Int = width, fullHeight: Int = height) {
         ag.mainFrameBuffer.setSize(x, y, width, height, fullWidth, fullHeight)
         dispatch(reshapeEvent.reset {
             this.x = x

korge-core/src@jvm/korlibs/render/DefaultGameWindowJvm.kt

@@ -3,7 +3,10 @@ package korlibs.render
 import korlibs.graphics.*
 import korlibs.render.awt.*
 
-actual fun CreateDefaultGameWindow(config: GameWindowCreationConfig): GameWindow = AwtGameWindow(config)
+actual fun CreateDefaultGameWindow(config: GameWindowCreationConfig): GameWindow = when {
+    System.getenv("KORGE_HEADLESS") == "true" -> AwtOffscreenGameWindow(config)
+    else -> AwtGameWindow(config)
+}
 
 object JvmAGFactory : AGFactory {
     override val supportsNativeFrame: Boolean = true
@@ -19,3 +22,4 @@ object JvmAGFactory : AGFactory {
         }
     }
 }
+

korge-core/src@jvm/korlibs/render/awt/AwtOffscreenGameWindow.kt

@@ -0,0 +1,57 @@
+package korlibs.render.awt
+
+import korlibs.concurrent.thread.*
+import korlibs.graphics.gl.*
+import korlibs.kgl.*
+import korlibs.math.geom.*
+import korlibs.render.*
+import korlibs.time.*
+
+class AwtOffscreenGameWindow(
+    var size: Size = Size(640, 480),
+    val context: OffscreenKmlGlContext = NewOffsetKmlGlContext(size.width.toInt(), size.height.toInt(), doUnset = true),
+    val draw: Boolean = false,
+    override val ag: AGOpengl = AGOpenglAWT(context = context.ctx),
+    exitProcessOnClose: Boolean = false,
+    override var devicePixelRatio: Double = 1.0,
+) : GameWindow() {
+    constructor(
+        config: GameWindowCreationConfig,
+        size: Size = Size(640, 480),
+        context: OffscreenKmlGlContext = NewOffsetKmlGlContext(size.width.toInt(), size.height.toInt(), doUnset = true),
+    ) : this(
+        size = size,
+        //draw = config.draw,
+        context = context,
+        ag = AGOpenglAWT(config, context.ctx),
+        //exitProcessOnClose = config.exitProcessOnClose,
+        //devicePixelRatio = config.devicePixelRatio
+    )
+
+    override val width: Int get() = context.width
+    override val height: Int get() = context.height
+
+    init {
+        this.exitProcessOnClose = exitProcessOnClose
+        //onEvent(ReshapeEvent) {
+        //    context.setSize(it.width, it.height)
+        //    //size = Size(it.width.toDouble(), it.height.toDouble())
+        //}
+    }
+
+    override fun setSize(width: Int, height: Int) {
+        val rwidth = (width * devicePixelRatio).toInt()
+        val rheight = (height * devicePixelRatio).toInt()
+        //println("OFFSCREEN: setSize: $width, $height")
+        context.setSize(rwidth, rheight)
+        context.doClear()
+        dispatchReshapeEvent(0, 0, rwidth, rheight)
+    }
+
+    override suspend fun loopDelay(time: FastDuration) {
+        NativeThread.sleepExact(time)
+    }
+
+    //override val ag: AG = if (draw) AGSoftware(width, height) else DummyAG(width, height)
+    //override val ag: AG = AGDummy(width, height)
+}

korge-ipc/build.gradle.kts

@@ -3,7 +3,9 @@ import korlibs.root.*
 
 plugins {
     //id "kotlin" version "1.6.21"
-    id("kotlin")
+    kotlin("jvm")
+    //kotlin("plugin.serialization")
+    id("org.jetbrains.kotlin.plugin.serialization") version "2.0.0"
     //id "org.jetbrains.kotlin.jvm"
     id("maven-publish")
 }
@@ -56,6 +58,11 @@ korlibs.NativeTools.groovyConfigurePublishing(project, false)
 korlibs.NativeTools.groovyConfigureSigning(project)
 
 dependencies {
+    //implementation(libs.kotlinx.coroutines.core)
+    implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.7.0")
+    implementation(libs.korlibs.datastructure.core)
+    implementation(libs.korlibs.memory)
+    implementation(libs.korlibs.io.stream)
     testImplementation(libs.bundles.kotlin.test)
 }