docs(bridge): document settings-wide vs per-module application

Both worked since the plugin is Plugin<Any> branching on Settings vs
Project, but the module-level path was undocumented and untested —
verified now with the example applied compose-plugin style. Also spells
out that a pluginManagement plugins{} entry only pins the version while
the settings-level plugins{} block is what applies build-wide.

.github/workflows/publish.yml

@@ -18,9 +18,8 @@ jobs:
     strategy:
       fail-fast: false
       # Each host runs only the publish tasks Gradle actually generated for it.
-      # macOS also publishes the shared kotlinMultiplatform metadata module.
+      # WINDOWS also publishes the shared kotlinMultiplatform metadata modules
-      # No library module declares jvm() today — apps do their own JVM parity
+      # (see its matrix entry) + the jvm jar + the bridge plugin.
-      # build against upstream Compose, so JVM isn't part of the publication.
       # `target` is the Gradle K/N target token (Capitalised) — one per host,
       # used for :demo / :apidemo linkReleaseExecutable<Target>. linuxArm64 is
       # skipped for the app build because SDL3 static libs on the ubuntu runner
@@ -31,16 +30,8 @@ jobs:
             host: macos
             target: MacosArm64
             exe_ext: kexe
-            # jvm publication: only :material-symbols declares a jvm() target
-            # (its common API renders via upstream Compose on JVM) — publish
-            # its host-independent jar from the same host as the metadata.
-            # :compose-desktop-native-bridge (the consumer-side bridge Gradle plugin +
-            # its plugin marker) is host-independent too — same job.
             tasks: >-
-              publishKotlinMultiplatformPublicationToGitHubPackagesRepository
               publishMacosArm64PublicationToGitHubPackagesRepository
-              publishJvmPublicationToGitHubPackagesRepository
-              :compose-desktop-native-bridge:publishAllPublicationsToGitHubPackagesRepository
           - runner: ubuntu-22.04
             host: linux
             target: LinuxX64
@@ -52,8 +43,18 @@ jobs:
             host: windows
             target: MingwX64
             exe_ext: exe
+            # WINDOWS owns the root KotlinMultiplatform metadata modules: it is
+            # the ONLY host that declares every target (vHostSupportsMingw is
+            # host-gated), so only its generated .module files carry the full
+            # variant table — the macOS-published roots of v0.1.15 had NO
+            # mingwX64 variants and Windows consumers could not resolve them.
+            # The host-independent jvm jar (:material-symbols) and the bridge
+            # plugin ride along on the same job.
             tasks: >-
               publishMingwX64PublicationToGitHubPackagesRepository
+              publishKotlinMultiplatformPublicationToGitHubPackagesRepository
+              publishJvmPublicationToGitHubPackagesRepository
+              :compose-desktop-native-bridge:publishAllPublicationsToGitHubPackagesRepository
 
     runs-on: ${{ matrix.runner }}
 
@@ -148,8 +149,8 @@ jobs:
       # already completed; you can't tell from the 409 alone. The fix: between
       # attempts, DELETE this host's package versions for the current release
       # and re-upload from a clean slate. Each host owns DISJOINT package
-      # names (roots / -macosarm64 / -jvm / bridge on macOS, -mingwx64 on
+      # names (roots / -mingwx64 / -jvm / bridge on Windows, -macosarm64 on
-      # Windows, -linuxx64/-linuxarm64 on Linux), so parallel jobs never touch
+      # macOS, -linuxx64/-linuxarm64 on Linux), so parallel jobs never touch
       # each other's uploads. Uses the run's GITHUB_TOKEN (packages: write);
       # a 403 on delete just degrades to the old blind-retry behaviour.
       - name: Publish to GitHub Packages
@@ -161,9 +162,9 @@ jobs:
           # Keep in sync with the module list in settings.gradle.kts.
           MODULES="ui ui-util ui-geometry ui-unit ui-backhandler ui-tooling-preview animation animation-core animation-graphics foundation foundation-layout material3 material-ripple window material-symbols navigation3-ui components-resources"
           case "${{ matrix.host }}" in
-            macos)   SUFFIXES="_ROOT_ -macosarm64" ;;
+            macos)   SUFFIXES="-macosarm64" ;;
             linux)   SUFFIXES="-linuxx64 -linuxarm64" ;;
-            windows) SUFFIXES="-mingwx64" ;;
+            windows) SUFFIXES="_ROOT_ -mingwx64" ;;
           esac
           host_packages() {
             for m in $MODULES; do
@@ -171,7 +172,7 @@ jobs:
                 if [ "$s" = "_ROOT_" ]; then echo "com.bitsycore.compose.sdl.$m"; else echo "com.bitsycore.compose.sdl.$m$s"; fi
               done
             done
-            if [ "${{ matrix.host }}" = "macos" ]; then
+            if [ "${{ matrix.host }}" = "windows" ]; then
               echo "com.bitsycore.compose.sdl.material-symbols-jvm"
               echo "com.bitsycore.compose.sdl.compose-desktop-native-bridge"
               echo "com.bitsycore.compose-desktop-native.bridge.com.bitsycore.compose-desktop-native.bridge.gradle.plugin"

CLAUDE.md

@@ -275,11 +275,15 @@ commonMain
                    attached to: mingwX64Main always; macOS/Linux when -Prenderer=sdl3.
 ```
 
-`createRenderBackend(…)` + `rendererPreferredGpuMode()` are declared identically
+`createRenderBackend(…)` + `rendererPreferredGpuMode()` are `expect`s in
-in both `skikoRendererMain` and `sdlRendererMain`. `:window` calls them straight
+`:ui`'s nativeMain with `actual`s in BOTH `skikoRendererMain` and
-from `:ui` — no `expect`/`actual`, no factory layer — and the right impl
+`sdlRendererMain` — unambiguous because **only one of the two renderer source
-resolves because **only one of the two renderer source sets is attached to a
+sets is attached to a given target**. (They used to be plain duplicate
-given target**. Under `-Prenderer=sdl3`, the `skikoRenderer*` source sets are
+declarations with no expect; that compiled per-target but shared nativeMain
+METADATA couldn't see them on a host whose targets span both renderers, which
+blocked the WINDOWS host from producing :window's KotlinMultiplatform
+publication — and Windows must publish the root modules, see the publish
+workflow.) Under `-Prenderer=sdl3`, the `skikoRenderer*` source sets are
 **not even created**, so Gradle has nothing to warn about and Skiko is never
 pulled in.
 
@@ -512,7 +516,10 @@ that should surface in tooling.
   'Color'` / `Cannot access class ...` in `compileCommonMainKotlinMetadata`,
   while per-target compilation is fine). Declare EVERY artifact the common
   code touches DIRECTLY (ui-graphics, ui-text, ui-unit, …) and give each its
-  own bridge rule. Note only the macOS publish job compiles common metadata —
+  own bridge rule. Note only the WINDOWS publish job compiles common metadata
+  (it owns the root KotlinMultiplatform publications — the only host that
+  declares every target, so only its .module files carry the full variant
+  table; macOS-published roots left v0.1.15 without mingwX64 variants) —
   test with `gradlew :<module>:compileCommonMainKotlinMetadata` before tagging.
 - **`Path()` in commonMain returns different actuals per renderer** —
   the Skia renderer produces a `SkiaBackedPath` (wraps

compose/ui/ui/src/nativeInterop/cinterop/sdl3.def

@@ -20,8 +20,13 @@ linkerOpts.osx = \
 	-framework QuartzCore -weak_framework CoreHaptics \
 	-lpthread -lm
 
-linkerOpts.linux_x64 = -lpthread -ldl -lm -lrt
+# The -L multi-arch dirs + fontconfig/GL/X11 serve the SKIA renderer (font
-linkerOpts.linux_arm64 = -lpthread -ldl -lm -lrt
+# matching, GL backend, windowing) — K/N's LLD sysroot doesn't include the
+# host's multi-arch dir, and carrying them here means apps (including bridge
+# consumers) need NO linker flags of their own. Unused under -Prenderer=sdl3;
+# the extra -l is harmless, and LLD skips missing -L dirs.
+linkerOpts.linux_x64 = -L/usr/lib/x86_64-linux-gnu -lpthread -ldl -lm -lrt -lfontconfig -lGL -lX11
+linkerOpts.linux_arm64 = -L/usr/lib/aarch64-linux-gnu -lpthread -ldl -lm -lrt -lfontconfig -lGL -lX11
 
 linkerOpts.mingw_x64 = \
 	-lm -lkernel32 -luser32 -lgdi32 -lwinmm -limm32 \

compose/ui/ui/src/nativeMain/kotlin/com/compose/sdl/RenderBackendFactory.kt

@@ -0,0 +1,24 @@
+package com.compose.sdl
+
+// ==================
+// MARK: Renderer entry points (expect)
+// ==================
+
+/* The renderer seam :window builds against. Each renderer source set
+   (skikoRendererMain / sdlRendererMain) supplies the actuals; exactly one of
+   the two is attached to any given target, so resolution stays unambiguous.
+
+   These were originally declared identically in both renderer source sets
+   with NO expect — fine per-target, but shared nativeMain METADATA (=: what
+   :window's KotlinMultiplatform publication compiles against) could not see
+   them on a host where the attached targets span BOTH renderers (Windows:
+   skikoRenderer for macos/linux + sdlRenderer for mingw). The expect makes
+   nativeMain metadata self-contained, which lets the WINDOWS publish job —
+   the only host that declares every target — produce the root modules. */
+
+/* Create the render backend for the selected [GpuMode]; null when the
+   backend can't initialise (caller falls back / reports). */
+expect fun createRenderBackend(inSdl: SDL3Backend, inGpu: GpuMode): RenderBackend?
+
+/* The renderer module's per-OS default GpuMode (used for GpuMode.Auto). */
+expect fun rendererPreferredGpuMode(): GpuMode

compose/ui/ui/src/sdlRendererMain/kotlin/com/compose/sdl/PlatformGpu.kt

@@ -6,7 +6,7 @@ import kotlin.experimental.ExperimentalNativeApi
 // MARK: SDL3 renderer per-OS default
 // ==================
 
-fun rendererPreferredGpuMode(): GpuMode {
+actual fun rendererPreferredGpuMode(): GpuMode {
     @OptIn(ExperimentalNativeApi::class)
     return when (Platform.osFamily) {
         OsFamily.MACOSX -> GpuMode.Sdl3.Metal

compose/ui/ui/src/sdlRendererMain/kotlin/com/compose/sdl/RenderBackendFactory.sdl.kt

@@ -11,7 +11,7 @@ import com.compose.sdl.renderer.sdl.Sdl3RenderBackend
    renderer modules expose createRenderBackend / rendererPreferredGpuMode
    with identical signatures in this package, and the build includes exactly
    one of them per target. Rejects Skia.* since this module has no Skiko. */
-fun createRenderBackend(inSdl: SDL3Backend, inGpu: GpuMode): RenderBackend? {
+actual fun createRenderBackend(inSdl: SDL3Backend, inGpu: GpuMode): RenderBackend? {
 	val vResolved = if (inGpu is GpuMode.Auto) rendererPreferredGpuMode() else inGpu
 	if (vResolved is GpuMode.Skia) {
 		error("$vResolved isn't available in this build — Skiko isn't linked. " +

compose/ui/ui/src/sdlRendererMain/kotlin/com/compose/sdl/renderer/sdl/Sdl3Canvas.kt

@@ -1,5 +1,6 @@
 package com.compose.sdl.renderer.sdl
 
+import androidx.compose.ui.geometry.CornerRadius
 import androidx.compose.ui.geometry.Offset
 import androidx.compose.ui.geometry.Rect
 import androidx.compose.ui.geometry.RoundRect
@@ -26,6 +27,7 @@ import com.compose.sdl.icons.IconFont
 import kotlinx.cinterop.*
 import sdl3.*
 import kotlin.math.PI
+import kotlin.math.sqrt
 import kotlin.math.cos
 import kotlin.math.max
 import kotlin.math.min
@@ -126,7 +128,7 @@ internal class Sdl3Canvas(
 	// offscreen clip opened inside this save frame (see fClipLayers below).
 	private data class State(
 		val a: Float, val b: Float, val c: Float, val d: Float, val e: Float, val f: Float,
-		val clip: IntArray?, val alpha: Float, val clipLayers: Int,
+		val clip: IntArray?, val alpha: Float, val clipLayers: Int, val pendingClips: Int,
 	)
 	private val fStack = ArrayDeque<State>()
 
@@ -146,9 +148,122 @@ internal class Sdl3Canvas(
 	)
 	private val fClipLayers = ArrayDeque<OffscreenClip>()
 
+	// ============
+	//  Lazy rounded clips. Opening an offscreen mask per clip is the SINGLE
+	//  most expensive thing this canvas does (two render-target switches +
+	//  clear + corner cut + feather + composite) - and the dominant Compose
+	//  idiom `Modifier.clip(CircleShape).background(...)` never needs one:
+	//  the background is a full-cover rect drawable AS the rounded shape, and
+	//  content wholly inside the rounded region needs no mask at all. So
+	//  clipRoundRect only RECORDS the clip; each draw either proves itself
+	//  safe (containment / cover) or realizes the offscreen on demand.
+
+	private class PendingRoundClip(
+		val deviceRound: RoundRect,   // device-space outline (clamped radii)
+		val localRound: RoundRect,    // as passed in (for cover -> shape-fill emission)
+		val region: IntArray,         // fClip intersect bbox at push time
+		val bbox: IntArray,           // device bbox of the outline
+		val prevClip: IntArray?,      // fClip before this clip was pushed
+		// Affine snapshot at push - cover -> fill re-emits in LOCAL space and
+		// must bail if the transform moved since.
+		val ma: Float, val mb: Float, val mc: Float, val md: Float, val me: Float, val mf: Float,
+		// fStack.size when the clip was pushed: a lazily-realized mask must be
+		// composited by the save-frame that OWNS the clip, not by whatever
+		// inner frame happened to trigger realization (a press draws the state
+		// layer and the ripple in separate inner clipRect{} frames - the first
+		// realize must not let the inner restore close the mask, or the second
+		// draw runs unmasked: the "square on click" artifact).
+		val saveDepth: Int,
+	)
+	private val fPendingClips = ArrayDeque<PendingRoundClip>()
+
+	/* Point-in-round-rect (device space) - inside the rect and, within a
+	   corner cut square, inside its ellipse. */
+	private fun roundRectContains(inRR: RoundRect, inX: Float, inY: Float): Boolean {
+		if (inX < inRR.left || inX > inRR.right || inY < inRR.top || inY > inRR.bottom) return false
+		fun corner(inRx: Float, inRy: Float, inDx: Float, inDy: Float): Boolean {
+			if (inRx <= 0f || inRy <= 0f) return true
+			val vNx = inDx / inRx; val vNy = inDy / inRy
+			return vNx * vNx + vNy * vNy <= 1f
+		}
+		val vTl = inRR.topLeftCornerRadius; val vTr = inRR.topRightCornerRadius
+		val vBr = inRR.bottomRightCornerRadius; val vBl = inRR.bottomLeftCornerRadius
+		if (inX < inRR.left + vTl.x && inY < inRR.top + vTl.y)
+			return corner(vTl.x, vTl.y, inX - (inRR.left + vTl.x), inY - (inRR.top + vTl.y))
+		if (inX > inRR.right - vTr.x && inY < inRR.top + vTr.y)
+			return corner(vTr.x, vTr.y, inX - (inRR.right - vTr.x), inY - (inRR.top + vTr.y))
+		if (inX > inRR.right - vBr.x && inY > inRR.bottom - vBr.y)
+			return corner(vBr.x, vBr.y, inX - (inRR.right - vBr.x), inY - (inRR.bottom - vBr.y))
+		if (inX < inRR.left + vBl.x && inY > inRR.bottom - vBl.y)
+			return corner(vBl.x, vBl.y, inX - (inRR.left + vBl.x), inY - (inRR.bottom - vBl.y))
+		return true
+	}
+
+	/* A device-space aabb is inside the round rect iff its four corners are. */
+	private fun roundRectContainsAabb(inRR: RoundRect, inL: Float, inT: Float, inR: Float, inB: Float): Boolean =
+		roundRectContains(inRR, inL, inT) && roundRectContains(inRR, inR, inT) &&
+			roundRectContains(inRR, inR, inB) && roundRectContains(inRR, inL, inB)
+
+	/* Device aabb of a LOCAL rect under the current affine. */
+	private fun deviceAabb(inL: Float, inT: Float, inR: Float, inB: Float): FloatArray {
+		val vX0 = mapX(inL, inT); val vX1 = mapX(inR, inT); val vX2 = mapX(inR, inB); val vX3 = mapX(inL, inB)
+		val vY0 = mapY(inL, inT); val vY1 = mapY(inR, inT); val vY2 = mapY(inR, inB); val vY3 = mapY(inL, inB)
+		return floatArrayOf(
+			minOf(vX0, vX1, vX2, vX3), minOf(vY0, vY1, vY2, vY3),
+			maxOf(vX0, vX1, vX2, vX3), maxOf(vY0, vY1, vY2, vY3),
+		)
+	}
+
+	/* If the LOCAL-space aabb stays inside every pending rounded clip, drawing
+	   it under the already-active rect clip is correct - no mask needed.
+	   Otherwise realize the pending masks before the draw proceeds. */
+	private fun admitDraw(inL: Float, inT: Float, inR: Float, inB: Float) {
+		if (fPendingClips.isEmpty()) return
+		val vBox = deviceAabb(inL, inT, inR, inB)
+		for (vPending in fPendingClips) {
+			if (!roundRectContainsAabb(vPending.deviceRound, vBox[0], vBox[1], vBox[2], vBox[3])) {
+				realizePendingClips()
+				return
+			}
+		}
+	}
+
+	/* Convert pending clips into real offscreen mask layers (outermost first). */
+	private fun realizePendingClips() {
+		if (fPendingClips.isEmpty()) return
+		val vRenderer = fRenderer.reinterpret<cnames.structs.SDL_Renderer>()
+		while (fPendingClips.isNotEmpty()) {
+			val vPending = fPendingClips.removeFirst()
+			fScope.flush()
+			// A clipRect after the push may have narrowed the visible area.
+			val vRegion = intersect(fClip, vPending.region)
+			val vTarget = fClipTargets?.target(fClipLayers.size, fSize.width.toInt(), fSize.height.toInt())
+			if (vTarget == null || vRegion[2] <= vRegion[0] || vRegion[3] <= vRegion[1]) {
+				// Degrade to the rect clip that is already active.
+				continue
+			}
+			val vPrevTarget = SDL_GetRenderTarget(vRenderer)
+			SDL_SetRenderTarget(vRenderer, vTarget.reinterpret())
+			fClip = vRegion
+			applyClip()
+			clearRegion(vRegion)
+			fClipLayers.addLast(OffscreenClip(vTarget, vPrevTarget, vPending.prevClip, vRegion, vPending.bbox, vPending.deviceRound))
+			// Attribute the realized mask to the save-frame that pushed the
+			// clip: inner frames entered since must NOT composite it on their
+			// restore - bump their thresholds past the new layer.
+			for (vI in vPending.saveDepth until fStack.size) {
+				val vState = fStack[vI]
+				if (vState.clipLayers < fClipLayers.size) {
+					fStack[vI] = vState.copy(clipLayers = fClipLayers.size)
+				}
+			}
+		}
+	}
+
 	// Flushes any pending batched geometry to SDL, then frees the scope's
 	// native buffer + clears the SDL clip. Call once per frame after the draw.
 	fun finish() {
+		fPendingClips.clear()
 		fScope.release()
 		// Safety: an unbalanced save/restore must never leave the renderer pointed
 		// at a scratch target when the frame is presented.
@@ -166,11 +281,14 @@ internal class Sdl3Canvas(
 		// Offscreen canvas: the outermost save (CanvasDrawScope brackets its draw with
 		// save/restore) switches the SDL render target to the ImageBitmap's texture.
 		if (fOffscreenTexture != null && fStack.isEmpty()) beginOffscreen()
-		fStack.addLast(State(fMa, fMb, fMc, fMd, fMe, fMf, fClip, fAlpha, fClipLayers.size))
+		fStack.addLast(State(fMa, fMb, fMc, fMd, fMe, fMf, fClip, fAlpha, fClipLayers.size, fPendingClips.size))
 	}
 
 	override fun restore() {
 		val vPrev = fStack.removeLastOrNull() ?: return
+		// Pending (never-realized) rounded clips opened inside this save frame:
+		// nothing was drawn through an offscreen for them - just drop them.
+		while (fPendingClips.size > vPrev.pendingClips) fPendingClips.removeLast()
 		// Composite + pop any offscreen rounded clips opened inside this save frame
 		// before restoring the plain state (each composite restores render target
 		// and SDL clip to what it was when the clip was opened).
@@ -267,6 +385,7 @@ internal class Sdl3Canvas(
 	// treating Difference as intersect clipped the border TO the notch instead
 	// (a floating line under the label, no outline anywhere else).
 	private fun clipRectDifference(inL: Float, inT: Float, inR: Float, inB: Float) {
+		realizePendingClips()
 		val vDiff = mapRectAABB(inL, inT, inR, inB)
 		val vRegion = fClip ?: intArrayOf(0, 0, fSize.width.toInt(), fSize.height.toInt())
 		if (fClipTargets == null || fSize.width < 1f || fSize.height < 1f ||
@@ -330,11 +449,19 @@ internal class Sdl3Canvas(
 	//  arbitrary paths keep the clipPath bbox fallback.
 
 	override fun clipRoundRect(inRoundRect: RoundRect) {
+		// The mask is cut in DEVICE space (the bbox below goes through the
+		// affine), but the corner radii arrive in LOCAL user space — scale
+		// them by the affine too, or a graphicsLayer-scaled circle clip cuts
+		// with oversized corners and degenerates toward a lozenge (seen as
+		// diamond-shaped "popped" bubbles under scale 0.55). Column norms
+		// approximate per-axis scale; rotation already degrades to AABBs here.
+		val vScaleX = sqrt(fMa * fMa + fMb * fMb)
+		val vScaleY = sqrt(fMc * fMc + fMd * fMd)
 		val vMaxRadius = maxOf(
-			inRoundRect.topLeftCornerRadius.x, inRoundRect.topLeftCornerRadius.y,
+			inRoundRect.topLeftCornerRadius.x * vScaleX, inRoundRect.topLeftCornerRadius.y * vScaleY,
-			inRoundRect.topRightCornerRadius.x, inRoundRect.topRightCornerRadius.y,
+			inRoundRect.topRightCornerRadius.x * vScaleX, inRoundRect.topRightCornerRadius.y * vScaleY,
-			inRoundRect.bottomRightCornerRadius.x, inRoundRect.bottomRightCornerRadius.y,
+			inRoundRect.bottomRightCornerRadius.x * vScaleX, inRoundRect.bottomRightCornerRadius.y * vScaleY,
-			inRoundRect.bottomLeftCornerRadius.x, inRoundRect.bottomLeftCornerRadius.y,
+			inRoundRect.bottomLeftCornerRadius.x * vScaleX, inRoundRect.bottomLeftCornerRadius.y * vScaleY,
 		)
 		// Effectively-square corners or no offscreen pool → plain rectangular clip.
 		if (vMaxRadius < 0.5f || fClipTargets == null || fSize.width < 1f || fSize.height < 1f) {
@@ -343,6 +470,20 @@ internal class Sdl3Canvas(
 		}
 		fScope.flush()
 		val vBbox = mapRectAABB(inRoundRect.left, inRoundRect.top, inRoundRect.right, inRoundRect.bottom)
+		// Clamp to the DEVICE half-box: the bbox is int-truncated, so a scaled
+		// radius can exceed it by a fraction — opposite corner cuts then overlap
+		// and leave flat spots at N/E/S/W (a circle read as an octagon).
+		val vHalfW = (vBbox[2] - vBbox[0]) / 2f
+		val vHalfH = (vBbox[3] - vBbox[1]) / 2f
+		fun deviceRadius(inR: CornerRadius) =
+			CornerRadius(minOf(inR.x * vScaleX, vHalfW), minOf(inR.y * vScaleY, vHalfH))
+		val vDeviceRound = RoundRect(
+			vBbox[0].toFloat(), vBbox[1].toFloat(), vBbox[2].toFloat(), vBbox[3].toFloat(),
+			topLeftCornerRadius = deviceRadius(inRoundRect.topLeftCornerRadius),
+			topRightCornerRadius = deviceRadius(inRoundRect.topRightCornerRadius),
+			bottomRightCornerRadius = deviceRadius(inRoundRect.bottomRightCornerRadius),
+			bottomLeftCornerRadius = deviceRadius(inRoundRect.bottomLeftCornerRadius),
+		)
 		val vRegion = intersect(fClip, vBbox)
 		// Nothing visible: keep behaviour of a normal clip (cull) without an
 		// offscreen pass. The enclosing save/restore restores the clip afterwards.
@@ -351,20 +492,18 @@ internal class Sdl3Canvas(
 			applyClip()
 			return
 		}
-		val vTarget = fClipTargets.target(fClipLayers.size, fSize.width.toInt(), fSize.height.toInt())
+		// LAZY: record only — the rect part of the clip applies immediately,
-		if (vTarget == null) {
+		// the offscreen mask is opened by the first draw that actually needs
-			// Couldn't allocate a scratch target — degrade to a rectangular clip.
+		// it (admitDraw / realizePendingClips). The common clip+background
-			clipRect(inRoundRect.left, inRoundRect.top, inRoundRect.right, inRoundRect.bottom)
+		// idiom never does.
-			return
-		}
-		val vRenderer = fRenderer.reinterpret<cnames.structs.SDL_Renderer>()
-		val vPrevTarget = SDL_GetRenderTarget(vRenderer)
 		val vPrevClip = fClip
-		SDL_SetRenderTarget(vRenderer, vTarget.reinterpret())
 		fClip = vRegion
 		applyClip()
-		clearRegion(vRegion)
+		fPendingClips.addLast(PendingRoundClip(
-		fClipLayers.addLast(OffscreenClip(vTarget, vPrevTarget, vPrevClip, vRegion, vBbox, inRoundRect))
+			vDeviceRound, inRoundRect, vRegion, vBbox, vPrevClip,
+			fMa, fMb, fMc, fMd, fMe, fMf,
+			fStack.size,
+		))
 	}
 
 	// Pops the top offscreen clip: flush its subtree, cut the rounded corners out
@@ -427,22 +566,24 @@ internal class Sdl3Canvas(
 	private fun zeroRoundRectCorners(inBbox: IntArray, inRoundRect: RoundRect) {
 		val vLeft = inBbox[0].toFloat(); val vTop = inBbox[1].toFloat()
 		val vRight = inBbox[2].toFloat(); val vBottom = inBbox[3].toFloat()
-		val vSeg = 12
 		val vTl = inRoundRect.topLeftCornerRadius
 		val vTr = inRoundRect.topRightCornerRadius
 		val vBr = inRoundRect.bottomRightCornerRadius
 		val vBl = inRoundRect.bottomLeftCornerRadius
-		// Upper bound: 4 corners × vSeg triangles × 3 vertices. Written straight
+		// Segments per quarter arc ~ every 4 device px along the arc, matching
-		// into the native SDL_Vertex buffer — the old ArrayList<Float> staging
+		// Sdl3DrawScope's density (~64/full circle at typical radii).
-		// boxed ~300 floats per clip layer per frame.
+		val vMaxR = maxOf(vTl.x, vTl.y, vTr.x, vTr.y, vBr.x, vBr.y, vBl.x, vBl.y)
-		fun cornerCount(inR: androidx.compose.ui.geometry.CornerRadius): Int =
+		val vSeg = ((vMaxR * 1.5708f) / 4f).toInt().coerceIn(8, 32)
-			if (inR.x <= 0f || inR.y <= 0f) 0 else vSeg * 3
+		fun cornerCount(inR: CornerRadius): Int = if (inR.x <= 0f || inR.y <= 0f) 0 else vSeg * 3
-		val vMax = cornerCount(vTl) + cornerCount(vTr) + cornerCount(vBr) + cornerCount(vBl)
+		val vFanMax = cornerCount(vTl) + cornerCount(vTr) + cornerCount(vBr) + cornerCount(vBl)
-		if (vMax == 0) return
+		if (vFanMax == 0) return
 		val vRenderer = fRenderer.reinterpret<cnames.structs.SDL_Renderer>()
-		SDL_SetRenderDrawBlendMode(vRenderer, SDL_BLENDMODE_NONE)
 		memScoped {
-			val vBuf = allocArray<SDL_Vertex>(vMax)
+			// ============
+			//  Pass 1 — hard cut: zero everything outside each corner arc
+			//  (triangle fan from the corner apex, blend NONE writes RGBA 0).
+			SDL_SetRenderDrawBlendMode(vRenderer, SDL_BLENDMODE_NONE)
+			val vBuf = allocArray<SDL_Vertex>(vFanMax)
 			var vIdx = 0
 			fun put(inX: Float, inY: Float) {
 				vBuf[vIdx].position.x = inX; vBuf[vIdx].position.y = inY
@@ -470,6 +611,51 @@ internal class Sdl3Canvas(
 			cutout(vRight, vBottom, vRight - vBr.x, vBottom - vBr.y, vBr.x, vBr.y, 0f)
 			cutout(vLeft, vBottom, vLeft + vBl.x, vBottom - vBl.y, vBl.x, vBl.y, 90f)
 			if (vIdx > 0) SDL_RenderGeometry(vRenderer, null, vBuf, vIdx, null, 0)
+
+			// ============
+			//  Pass 2 — feathered edge: a ~1.2px ring band straddling each arc
+			//  whose vertex alpha ramps 1 → 0 outward, drawn with a custom
+			//  "dst *= srcAlpha" blend. SDL_RenderGeometry has no antialiasing;
+			//  without this the mask boundary is a hard polygon edge while the
+			//  drawn shapes get Sdl3DrawScope's fringe AA (visibly rougher —
+			//  scaled-down circle clips read as low-poly).
+			val vMul = SDL_ComposeCustomBlendMode(
+				SDL_BLENDFACTOR_ZERO, SDL_BLENDFACTOR_SRC_ALPHA, SDL_BLENDOPERATION_ADD,
+				SDL_BLENDFACTOR_ZERO, SDL_BLENDFACTOR_SRC_ALPHA, SDL_BLENDOPERATION_ADD,
+			)
+			SDL_SetRenderDrawBlendMode(vRenderer, vMul)
+			val vFeather = 1.2f
+			val vBandMax = 4 * vSeg * 6
+			val vBand = allocArray<SDL_Vertex>(vBandMax)
+			var vBIdx = 0
+			fun putBand(inX: Float, inY: Float, inKeep: Float) {
+				vBand[vBIdx].position.x = inX; vBand[vBIdx].position.y = inY
+				vBand[vBIdx].color.r = 1f; vBand[vBIdx].color.g = 1f; vBand[vBIdx].color.b = 1f; vBand[vBIdx].color.a = inKeep
+				vBand[vBIdx].tex_coord.x = 0f; vBand[vBIdx].tex_coord.y = 0f
+				vBIdx++
+			}
+			fun feather(inCx: Float, inCy: Float, inRx: Float, inRy: Float, inStartDeg: Float) {
+				if (inRx <= 1f || inRy <= 1f) return
+				var vPrevInX = 0f; var vPrevInY = 0f; var vPrevOutX = 0f; var vPrevOutY = 0f
+				for (vI in 0..vSeg) {
+					val vAngle = ((inStartDeg + 90f * vI / vSeg) * (PI / 180.0)).toFloat()
+					val vCos = cos(vAngle); val vSin = sin(vAngle)
+					val vInX = inCx + (inRx - vFeather) * vCos
+					val vInY = inCy + (inRy - vFeather) * vSin
+					val vOutX = inCx + inRx * vCos
+					val vOutY = inCy + inRy * vSin
+					if (vI > 0) {
+						putBand(vPrevInX, vPrevInY, 1f); putBand(vPrevOutX, vPrevOutY, 0f); putBand(vInX, vInY, 1f)
+						putBand(vInX, vInY, 1f); putBand(vPrevOutX, vPrevOutY, 0f); putBand(vOutX, vOutY, 0f)
+					}
+					vPrevInX = vInX; vPrevInY = vInY; vPrevOutX = vOutX; vPrevOutY = vOutY
+				}
+			}
+			feather(vLeft + vTl.x, vTop + vTl.y, vTl.x, vTl.y, 180f)
+			feather(vRight - vTr.x, vTop + vTr.y, vTr.x, vTr.y, 270f)
+			feather(vRight - vBr.x, vBottom - vBr.y, vBr.x, vBr.y, 0f)
+			feather(vLeft + vBl.x, vBottom - vBl.y, vBl.x, vBl.y, 90f)
+			if (vBIdx > 0) SDL_RenderGeometry(vRenderer, null, vBand, vBIdx, null, 0)
 		}
 		SDL_SetRenderDrawBlendMode(vRenderer, SDL_BLENDMODE_BLEND)
 	}
@@ -502,6 +688,7 @@ internal class Sdl3Canvas(
 		inAmbientColor: androidx.compose.ui.graphics.Color,
 		inSpotColor: androidx.compose.ui.graphics.Color,
 	) {
+		realizePendingClips()
 		if (inElevationPx <= 0f) return
 
 		// Generic paths (CutCornerShape, GenericShape) don't 9-slice — blur the
@@ -636,6 +823,7 @@ internal class Sdl3Canvas(
 		// before re-rasterising a vector). Write transparent directly instead of the
 		// paint colour.
 		if (paint.blendMode == BlendMode.Clear) {
+			realizePendingClips()
 			fScope.flush()
 			clearRegion(intArrayOf(
 				mapX(left, top).toInt(), mapY(left, top).toInt(),
@@ -643,21 +831,75 @@ internal class Sdl3Canvas(
 			))
 			return
 		}
+		if (fPendingClips.isNotEmpty() && tryDrawRectUnderPendingClips(left, top, right, bottom, paint)) return
 		prep().rectCore(brushFor(paint), Offset(left, top), Size(right - left, bottom - top), (paint.alpha * fAlpha), styleFor(paint))
 	}
 
+	/* The `clip(shape).background(color)` idiom: a FILL rect that fully covers
+	   the innermost pending clip becomes a direct rounded-shape fill (with the
+	   scope's fringe AA — no offscreen mask at all). A rect fully INSIDE every
+	   pending clip draws as-is. Returns true when the draw has been emitted. */
+	private fun tryDrawRectUnderPendingClips(inL: Float, inT: Float, inR: Float, inB: Float, inPaint: Paint): Boolean {
+		val vBox = deviceAabb(inL, inT, inR, inB)
+		val vInner = fPendingClips.last()
+		// Cover case: fill paint, no stroke, rect covers the whole clip outline,
+		// affine unchanged since the clip was pushed (local-space re-emission),
+		// uniform corner radii (the scope's roundRectCore takes one radius), and
+		// the clip outline itself contained in every OUTER pending clip.
+		val vLr = vInner.localRound
+		val vUniform = vLr.topLeftCornerRadius.x == vLr.topLeftCornerRadius.y &&
+			vLr.topLeftCornerRadius == vLr.topRightCornerRadius &&
+			vLr.topLeftCornerRadius == vLr.bottomRightCornerRadius &&
+			vLr.topLeftCornerRadius == vLr.bottomLeftCornerRadius
+		val vAffineUnchanged = vInner.ma == fMa && vInner.mb == fMb && vInner.mc == fMc &&
+			vInner.md == fMd && vInner.me == fMe && vInner.mf == fMf
+		if (inPaint.style == PaintingStyle.Fill && inPaint.blendMode == BlendMode.SrcOver &&
+			vUniform && vAffineUnchanged &&
+			vBox[0] <= vInner.bbox[0] && vBox[1] <= vInner.bbox[1] &&
+			vBox[2] >= vInner.bbox[2] && vBox[3] >= vInner.bbox[3]
+		) {
+			var vOutersContain = true
+			for (vPending in fPendingClips) {
+				if (vPending === vInner) continue
+				if (!roundRectContainsAabb(vPending.deviceRound, vInner.deviceRound.left, vInner.deviceRound.top, vInner.deviceRound.right, vInner.deviceRound.bottom)) {
+					vOutersContain = false; break
+				}
+			}
+			if (vOutersContain) {
+				prep().roundRectCore(
+					brushFor(inPaint),
+					Offset(vLr.left, vLr.top), Size(vLr.width, vLr.height),
+					vLr.topLeftCornerRadius.x,
+					(inPaint.alpha * fAlpha), Fill,
+				)
+				return true
+			}
+		}
+		// Containment: inside every pending outline → the active rect clip is enough.
+		for (vPending in fPendingClips) {
+			if (!roundRectContainsAabb(vPending.deviceRound, vBox[0], vBox[1], vBox[2], vBox[3])) {
+				realizePendingClips()
+				return false
+			}
+		}
+		return false
+	}
+
 	override fun drawRoundRect(
 		left: Float, top: Float, right: Float, bottom: Float,
 		radiusX: Float, radiusY: Float, paint: Paint,
 	) {
+		admitDraw(left, top, right, bottom)
 		prep().roundRectCore(brushFor(paint), Offset(left, top), Size(right - left, bottom - top), radiusX, (paint.alpha * fAlpha), styleFor(paint))
 	}
 
 	override fun drawOval(left: Float, top: Float, right: Float, bottom: Float, paint: Paint) {
+		admitDraw(left, top, right, bottom)
 		prep().ovalCore(brushFor(paint), Offset(left, top), Size(right - left, bottom - top), (paint.alpha * fAlpha), styleFor(paint))
 	}
 
 	override fun drawCircle(center: Offset, radius: Float, paint: Paint) {
+		admitDraw(center.x - radius, center.y - radius, center.x + radius, center.y + radius)
 		prep().circleCore(brushFor(paint), radius, center, (paint.alpha * fAlpha), styleFor(paint))
 	}
 
@@ -665,14 +907,17 @@ internal class Sdl3Canvas(
 		left: Float, top: Float, right: Float, bottom: Float,
 		startAngle: Float, sweepAngle: Float, useCenter: Boolean, paint: Paint,
 	) {
+		realizePendingClips()
 		prep().arcCore(brushFor(paint), startAngle, sweepAngle, useCenter, Offset(left, top), Size(right - left, bottom - top), (paint.alpha * fAlpha), styleFor(paint))
 	}
 
 	override fun drawLine(p1: Offset, p2: Offset, paint: Paint) {
+		realizePendingClips()
 		prep().lineCore(brushFor(paint), p1, p2, paint.strokeWidth, paint.strokeCap, (paint.alpha * fAlpha))
 	}
 
 	override fun drawPath(path: ComposePath, paint: Paint) {
+		realizePendingClips()
 		prep().pathCore(path, brushFor(paint), (paint.alpha * fAlpha), styleFor(paint))
 	}
 
@@ -697,6 +942,11 @@ internal class Sdl3Canvas(
 		inBaseItalic: Boolean,
 		inTextDecoration: androidx.compose.ui.text.style.TextDecoration?,
 	) {
+		// Small centred labels (a popped bubble's "pop") usually sit fully
+		// inside a rounded clip — gate on containment like other draws, with
+		// a 2px margin for glyph overhang / AA bleed, instead of paying a
+		// mask pass per text run.
+		admitDraw(inX - 2f, inY - 2f, inX + inBoxWidth + 2f, inY + inBoxHeight + 2f)
 		fScope.flush()
 		// Paragraph-level decoration bits forwarded to every wrapped line.
 		val vUnderline = inTextDecoration?.contains(androidx.compose.ui.text.style.TextDecoration.Underline) == true
@@ -712,15 +962,26 @@ internal class Sdl3Canvas(
 		// node's real box. The per-line path below centres within a lineHeight band
 		// (1.2 em for Material Symbols), taller than the size-clamped icon node,
 		// which pushed every icon ~0.1 em below centre.
+		// Device-space scale for GLYPHS: the pen position already maps through
+		// the affine, but font size and centering boxes must scale with it too
+		// or text inside a graphicsLayer(scale) renders at full size, off
+		// centre (JVM/Skia scales glyphs with the canvas). Wrap stays in LOCAL
+		// units below so line breaks match what layout measured.
+		val vTextScaleX = sqrt(fMa * fMa + fMb * fMb)
+		val vTextScaleY = sqrt(fMc * fMc + fMd * fMd)
+		val vDeviceFontPx =
+			if (vTextScaleY == 1f) inFontSizePx
+			else (inFontSizePx * vTextScaleY).toInt().coerceAtLeast(1)
+
 		if (inFontFamily != null && IconFont.isIconFamily(inFontFamily)) {
 			vTr.drawText(
 				inText = inText,
 				inX = mapX(inX, inY).toInt(),
 				inY = mapY(inX, inY).toInt(),
-				inBoxWidth = inBoxWidth.toInt(),
+				inBoxWidth = (inBoxWidth * vTextScaleX).toInt(),
-				inBoxHeight = inBoxHeight.toInt(),
+				inBoxHeight = (inBoxHeight * vTextScaleY).toInt(),
 				inColor = vColor,
-				inFontSize = inFontSizePx,
+				inFontSize = vDeviceFontPx,
 				inAlign = inTextAlign,
 				inFontFamily = inFontFamily,
 				inFontVariations = inFontVariations,
@@ -758,15 +1019,15 @@ internal class Sdl3Canvas(
 			if (vLineY >= inY + inBoxHeight) break
 			vTr.drawText(
 				inText = vLine,
-				// Position maps through the affine (translate/scale reach the origin);
+				// Position maps through the affine; size/boxes switch to DEVICE
-				// glyph scaling/rotation isn't wired, so text in a rotated/scaled layer
+				// units here (scaled by the affine's column norms) so glyphs
-				// repositions but doesn't itself scale or rotate.
+				// scale with the layer. Rotation still only repositions.
 				inX = mapX(inX, vLineY).toInt(),
 				inY = mapY(inX, vLineY).toInt(),
-				inBoxWidth = inBoxWidth.toInt(),
+				inBoxWidth = (inBoxWidth * vTextScaleX).toInt(),
-				inBoxHeight = vLineH.toInt(),
+				inBoxHeight = (vLineH * vTextScaleY).toInt(),
 				inColor = vColor,
-				inFontSize = inFontSizePx,
+				inFontSize = vDeviceFontPx,
 				inAlign = inTextAlign,
 				inFontFamily = inFontFamily,
 				inFontVariations = inFontVariations,
@@ -794,6 +1055,7 @@ internal class Sdl3Canvas(
 		inContentScale: androidx.compose.ui.layout.ContentScale,
 		inAlpha: Float,
 	) {
+		admitDraw(inX, inY, inX + inWidth, inY + inHeight)
 		fScope.flush()
 		// Map the origin through the affine and scale the size by the matrix's axis
 		// magnitudes (rotation contributes 1, so it only repositions the blit — the
@@ -812,6 +1074,7 @@ internal class Sdl3Canvas(
 
 	override fun drawImage(image: ImageBitmap, topLeftOffset: Offset, paint: Paint) {
 		val vBmp = image as? SdlImageBitmap ?: return
+		admitDraw(topLeftOffset.x, topLeftOffset.y, topLeftOffset.x + vBmp.width, topLeftOffset.y + vBmp.height)
 		drawImageRect(
 			image,
 			androidx.compose.ui.unit.IntOffset.Zero,
@@ -834,6 +1097,7 @@ internal class Sdl3Canvas(
 		dstSize: androidx.compose.ui.unit.IntSize,
 		paint: Paint,
 	) {
+		realizePendingClips()
 		val vTex = (image as? SdlImageBitmap)?.texture ?: return
 		// Commit pending frame geometry and re-assert this canvas's target + clip
 		// (an offscreen render just borrowed the render target).

compose/ui/ui/src/skikoRendererMain/kotlin/com/compose/sdl/PlatformGpu.kt

@@ -9,7 +9,7 @@ import kotlin.experimental.ExperimentalNativeApi
 
 internal expect fun makeMetalBridge(backend: SDL3Backend): SkiaBridge?
 
-fun rendererPreferredGpuMode(): GpuMode {
+actual fun rendererPreferredGpuMode(): GpuMode {
     @OptIn(ExperimentalNativeApi::class)
     return when (Platform.osFamily) {
         OsFamily.MACOSX -> GpuMode.Skia.Metal

compose/ui/ui/src/skikoRendererMain/kotlin/com/compose/sdl/RenderBackendFactory.skia.kt

@@ -11,7 +11,7 @@ import com.compose.sdl.renderer.skia.SkiaRenderBackend
    SDL3 module's createRenderBackend / rendererPreferredGpuMode in the same
    package; exactly one renderer module is included per target. Rejects
    Sdl3.* since this module has no SDL3_ttf / SDL3_image. */
-fun createRenderBackend(inSdl: SDL3Backend, inGpu: GpuMode): RenderBackend? {
+actual fun createRenderBackend(inSdl: SDL3Backend, inGpu: GpuMode): RenderBackend? {
 	val vResolved = if (inGpu is GpuMode.Auto) rendererPreferredGpuMode() else inGpu
 	if (vResolved is GpuMode.Sdl3) {
 		error("Sdl3.* modes aren't available in a Skia build — rerun with -Prenderer=sdl3")

gradle-plugin/compose-desktop-native-bridge/README.md

@@ -59,8 +59,63 @@ kotlin {
 }
 ```
 
-The plugin can also be applied to a single module's `build.gradle.kts` instead
+### Settings-wide or per-module
-of settings (it then bridges only that module's configurations).
+
+The plugin applies at either level:
+
+```kotlin
+// settings.gradle.kts — every module of the build
+plugins { id("com.bitsycore.compose-desktop-native.bridge") version "<v>" }
+```
+
+```kotlin
+// build.gradle.kts — this module only (compose-plugin style)
+plugins { id("com.bitsycore.compose-desktop-native.bridge") }
+```
+
+Note the difference between the two settings blocks: a
+`pluginManagement { plugins { id(...) version ... } }` entry only PINS the
+version (so module-level applications can omit it); the top-level
+`plugins { }` block in settings is what actually applies it build-wide.
+Rule of thumb: single app module → apply in the module; multi-module builds →
+apply once in settings.
+
+## compose.desktop.native — the application block for native
+
+The native counterpart of `compose.desktop { application { mainClass } }`:
+
+```kotlin
+compose.desktop {
+    application { mainClass = "app.MainJvmKt" }   // upstream jvm
+    native { entryPoint = "app.main" }            // compose-desktop-native
+}
+```
+
+Declares an executable with that entry point on every Kotlin/Native desktop
+target — no `targets.withType<KotlinNativeTarget> { binaries.executable { … } }`
+boilerplate. Targets that already declare an executable are left untouched,
+so manual configuration (extra linker flags, custom build types) still wins.
+
+## composeResources — zero setup
+
+If the module also applies the official `org.jetbrains.compose` plugin, the
+bridge completes the resources story on the native desktop targets: it
+registers a `package<Variant>ComposeResources<Target>` task per native
+executable that bundles the Compose plugin's prepared resources into
+`data.kres` next to the binary (a STORED zip the port's runtime reads via
+SDL_GetBasePath). Files under `src/commonMain/composeResources/` + the
+generated `Res.*` accessors then work exactly like on every other platform —
+drawables, strings (`values/*.xml`), fonts, raw files:
+
+```kotlin
+commonMain.dependencies {
+    implementation("org.jetbrains.compose.components:components-resources:<cmp-version>")
+}
+```
+
+`compose.resources { packageOfResClass = … }` is honoured; source-set
+overrides follow the default hierarchy (a `mingwX64Main` resource beats a
+`commonMain` one).
 
 ## Notes
 

gradle-plugin/compose-desktop-native-bridge/build.gradle.kts

@@ -16,6 +16,7 @@ plugins {
     `java-gradle-plugin`
 }
 
+
 gradlePlugin {
     plugins {
         create("composeDesktopNativeBridge") {

gradle-plugin/compose-desktop-native-bridge/src/main/kotlin/com/bitsycore/compose/sdl/gradle/ComposeDesktopNativeBridgePlugin.kt

@@ -79,6 +79,8 @@ class ComposeDesktopNativeBridgePlugin : Plugin<Any> {
 // ==================
 
 private fun installBridge(project: Project) {
+	installResourcePackaging(project)
+	installNativeApplicationDsl(project)
 	val version = project.providers.gradleProperty(versionProperty).orNull ?: pluginVersion
 	project.configurations.configureEach { configuration ->
 		if (nativeTargetTokens.any { configuration.name.contains(it, ignoreCase = true) }) {

gradle-plugin/compose-desktop-native-bridge/src/main/kotlin/com/bitsycore/compose/sdl/gradle/NativeApplication.kt

@@ -0,0 +1,76 @@
+package com.bitsycore.compose.sdl.gradle
+
+import org.gradle.api.Action
+import org.gradle.api.NamedDomainObjectCollection
+import org.gradle.api.Project
+import org.gradle.api.plugins.ExtensionAware
+
+// ==================
+// MARK: compose.desktop.native { } — the native counterpart of application { }
+// ==================
+
+/**
+ * The native desktop analog of `compose.desktop { application { mainClass } }`:
+ *
+ * ```kotlin
+ * compose.desktop {
+ *     application { mainClass = "bubblewrap.MainJvmKt" }   // jvm (upstream)
+ *     native { entryPoint = "bubblewrap.main" }            // this port
+ * }
+ * ```
+ *
+ * Declares an executable with the given entry point on every Kotlin/Native
+ * DESKTOP target (mingwX64 / linuxX64 / linuxArm64 / macosArm64) — replacing
+ * the hand-written `targets.withType<KotlinNativeTarget> { binaries.executable
+ * { entryPoint = … } }` block. Targets that already declare an executable are
+ * left untouched, so manual configuration (extra linker flags, custom build
+ * types) still wins.
+ */
+abstract class ComposeDesktopNativeExtension {
+	/** Entry point (`package.functionName`) for the native executables. */
+	var entryPoint: String? = null
+}
+
+/* Grafts the `native` extension onto the Compose plugin's `desktop` extension
+   (extensions are ExtensionAware, so this needs no compile-time dependency)
+   and materialises the executables in afterEvaluate. All KGP access is
+   reflective: applied from settings, this plugin's classloader is a PARENT of
+   the project's buildscript loader and cannot see KGP types. */
+internal fun installNativeApplicationDsl(project: Project) {
+	project.pluginManager.withPlugin("org.jetbrains.compose") {
+		project.pluginManager.withPlugin("org.jetbrains.kotlin.multiplatform") {
+			val composeExt = project.extensions.findByName("compose") as? ExtensionAware ?: return@withPlugin
+			val desktopExt = composeExt.extensions.findByName("desktop") as? ExtensionAware ?: return@withPlugin
+			if (desktopExt.extensions.findByName("native") != null) return@withPlugin
+			val nativeExt = desktopExt.extensions.create("native", ComposeDesktopNativeExtension::class.java)
+			project.afterEvaluate { configureNativeExecutables(it, nativeExt) }
+		}
+	}
+}
+
+private val desktopKonanFamilies = setOf("MINGW", "LINUX", "OSX")
+
+private fun configureNativeExecutables(project: Project, ext: ComposeDesktopNativeExtension) {
+	val entryPoint = ext.entryPoint ?: return
+	val kotlinExt = project.extensions.findByName("kotlin") ?: return
+	@Suppress("UNCHECKED_CAST")
+	val targets = kotlinExt.javaClass.getMethod("getTargets").invoke(kotlinExt) as NamedDomainObjectCollection<Any>
+	for (target in targets) {
+		val platformType = target.javaClass.getMethod("getPlatformType").invoke(target)
+		if (platformType.toString() != "native") continue
+		val konanTarget = target.javaClass.getMethod("getKonanTarget").invoke(target)
+		val family = konanTarget.javaClass.getMethod("getFamily").invoke(konanTarget)
+		if ((family as Enum<*>).name !in desktopKonanFamilies) continue
+		val binaries = target.javaClass.getMethod("getBinaries").invoke(target)
+		// Respect manual configuration: skip targets that already have an
+		// executable (matching by the binary class, not the name suffix).
+		val existing = (binaries as Iterable<*>).any { it != null && it.javaClass.simpleName == "Executable" }
+		if (existing) continue
+		val executableMethod = binaries.javaClass.methods.first {
+			it.name == "executable" && it.parameterCount == 1 && Action::class.java.isAssignableFrom(it.parameterTypes[0])
+		}
+		executableMethod.invoke(binaries, Action<Any> { binary ->
+			binary.javaClass.getMethod("setEntryPoint", String::class.java).invoke(binary, entryPoint)
+		})
+	}
+}

gradle-plugin/compose-desktop-native-bridge/src/main/kotlin/com/bitsycore/compose/sdl/gradle/ResourcePackaging.kt

@@ -0,0 +1,114 @@
+package com.bitsycore.compose.sdl.gradle
+
+import org.gradle.api.Project
+import org.gradle.api.file.DuplicatesStrategy
+import org.gradle.api.plugins.ExtensionAware
+import org.gradle.api.tasks.bundling.Zip
+import org.gradle.api.tasks.bundling.ZipEntryCompression
+
+// ==================
+// MARK: composeResources → data.kres packaging
+// ==================
+
+/**
+ * Gives consumer apps the OFFICIAL composeResources experience on the port's
+ * native desktop targets: files under `src/<sourceSet>/composeResources/` +
+ * the generated `Res.*` accessors, with nothing hand-rolled.
+ *
+ * The official Compose plugin already handles accessor generation and every
+ * other platform's packaging (jvm classpath, Android assets, …). What the
+ * native desktop targets need is the port's runtime bundle: `data.kres`, a
+ * STORED zip next to the executable that the runtime opens via
+ * SDL_GetBasePath() and reads entry-by-entry (fseek+fread — hence no
+ * compression). This registers one Zip task per native executable link task,
+ * zipping the Compose plugin's PREPARED resources (values*.xml are converted
+ * to .cvr there — zipping the raw source dir would break stringResource)
+ * under the same `composeResources/<res-package>/` prefix the generated
+ * accessors carry.
+ *
+ * IMPLEMENTATION NOTE — conventions, not KGP types: applied from settings,
+ * this plugin lives in a classloader that is a PARENT of the project's
+ * buildscript loader, so KGP / Compose plugin classes are structurally
+ * invisible to it. Link tasks (`link<Variant>Executable<Target>`), binary
+ * output dirs (`build/bin/<target>/<variant>Executable`), prepare tasks
+ * (`prepareComposeResourcesTaskFor<SourceSet>`) and the prepared-resources
+ * dir are all stable KGP / Compose-plugin naming conventions.
+ */
+internal fun installResourcePackaging(project: Project) {
+	project.pluginManager.withPlugin("org.jetbrains.compose") {
+		project.pluginManager.withPlugin("org.jetbrains.kotlin.multiplatform") {
+			// afterEvaluate: link tasks, prepare tasks and compose.resources {}
+			// all materialise during project evaluation.
+			project.afterEvaluate { registerDataKresTasks(it) }
+		}
+	}
+}
+
+/* The port's desktop targets and each one's default-hierarchy source sets,
+   most specific first — a target-level resource overrides a commonMain one. */
+private val desktopTargets = mapOf(
+	"MingwX64" to listOf("mingwX64Main", "mingwMain", "nativeMain", "commonMain"),
+	"LinuxX64" to listOf("linuxX64Main", "linuxMain", "nativeMain", "commonMain"),
+	"LinuxArm64" to listOf("linuxArm64Main", "linuxMain", "nativeMain", "commonMain"),
+	"MacosArm64" to listOf("macosArm64Main", "macosMain", "appleMain", "nativeMain", "commonMain"),
+)
+
+private fun registerDataKresTasks(project: Project) {
+	val taskNames = project.tasks.names
+	val resPackage = project.resolveResourcePackage()
+	for ((target, sourceSets) in desktopTargets) {
+		for (variant in listOf("Debug", "Release")) {
+			val linkName = "link${variant}Executable$target"
+			if (linkName !in taskNames) continue
+			val zipName = "package${variant}ComposeResources$target"
+			if (zipName in taskNames) continue
+			val prepareNames = sourceSets
+				.map { "prepareComposeResourcesTaskFor" + it.replaceFirstChar { c -> c.uppercase() } }
+				.filter { it in taskNames }
+			val zipTask = project.tasks.register(zipName, Zip::class.java) { task ->
+				task.description = "Bundles composeResources into data.kres next to the $target ${variant.lowercase()} executable."
+				task.archiveFileName.set("data.kres")
+				task.destinationDirectory.set(
+					project.layout.buildDirectory.dir(
+						"bin/${target.replaceFirstChar { it.lowercase() }}/${variant.replaceFirstChar { it.lowercase() }}Executable"
+					)
+				)
+				// STORED: the runtime's reader hands raw bytes straight to the
+				// decoders — an entry is one fseek+fread, never inflated.
+				task.entryCompression = ZipEntryCompression.STORED
+				task.duplicatesStrategy = DuplicatesStrategy.EXCLUDE
+				for (prepareName in prepareNames) {
+					val sourceSet = prepareName.removePrefix("prepareComposeResourcesTaskFor")
+						.replaceFirstChar { it.lowercase() }
+					val prepared = project.layout.buildDirectory.dir(
+						"generated/compose/resourceGenerator/preparedResources/$sourceSet/composeResources"
+					)
+					task.from(prepared) { spec -> spec.into("composeResources/$resPackage") }
+					task.dependsOn(project.tasks.named(prepareName))
+				}
+			}
+			project.tasks.named(linkName) { it.dependsOn(zipTask) }
+		}
+	}
+}
+
+/* The package the generated accessors carry in their resource paths —
+   compose.resources.packageOfResClass (read REFLECTIVELY: the ResourcesExtension
+   class lives in the project's buildscript loader, invisible from here), or
+   the Compose plugin's documented default `{group}.{module}.generated.resources`
+   (lowercased, '-' → '_', digit-leading segments prefixed with '_'). */
+private fun Project.resolveResourcePackage(): String {
+	val explicit = runCatching {
+		val composeExt = extensions.findByName("compose") as? ExtensionAware
+		val resourcesExt = composeExt?.extensions?.findByName("resources")
+		resourcesExt?.javaClass?.getMethod("getPackageOfResClass")?.invoke(resourcesExt) as? String
+	}.getOrNull().orEmpty()
+	if (explicit.isNotEmpty()) return explicit
+	val groupName = group.toString().lowercase().asUnderscoredIdentifier()
+	val moduleName = name.lowercase().asUnderscoredIdentifier()
+	val id = if (groupName.isNotEmpty()) "$groupName.$moduleName" else moduleName
+	return "$id.generated.resources"
+}
+
+private fun String.asUnderscoredIdentifier(): String =
+	replace('-', '_').let { if (it.isNotEmpty() && it.first().isDigit()) "_$it" else it }