fix(core): pre-allocate trackedRefs in pass encoders (ML OOM fix)

CHANGELOG.md

@@ -5,6 +5,17 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.28.10] - 2026-05-26
+
+### Fixed
+
+- **Core: pre-allocate trackedRefs slices in pass encoders** — `BeginComputePass`,
+  `BeginRenderPass`, and `CreateCommandEncoder` now pre-allocate `trackedRefs` with
+  capacity 64. Previously Phase 2 tracking (v0.28.8) used bare `append()` starting
+  from nil, causing O(log N) reallocations and abandoned backing arrays for GC. With
+  10K dispatches × 4 buffers per step, each encoder accumulated 40K pointer entries via
+  17 doublings. Pre-allocation eliminates all intermediate backing arrays.
+
 ## [0.28.9] - 2026-05-26
 
 ### Fixed

ROADMAP.md

@@ -19,7 +19,7 @@
 
 ---
 
-## Current State: v0.28.9
+## Current State: v0.28.10
 
 ✅ **All 5 HAL backends complete** (~127K LOC)
 ✅ **Three-layer WebGPU stack** — wgpu API → wgpu/core → wgpu/hal
@@ -151,6 +151,7 @@
 
 | Version | Date | Highlights |
 |---------|------|------------|
+| **v0.28.10** | 2026-05 | Core: pre-allocate trackedRefs in pass encoders (ML OOM fix). |
 | **v0.28.9** | 2026-05 | Core: refcount-driven Buffer destruction via onZero (Rust Drop parity). Eliminates Phase 1 stale index risk. |
 | **v0.28.8** | 2026-05 | Core: Clone buffer ResourceRefs in SetBindGroup — prevents use-after-free (Rust wgpu parity). |
 | **v0.28.7** | 2026-05 | Core: deferred GLES enumeration in RequestAdapter (adapter name fix). |

device_native.go

@@ -734,7 +734,12 @@ func (d *Device) CreateCommandEncoder(desc *CommandEncoderDescriptor) (*CommandE
 			return nil, err
 		}
 
-		return &CommandEncoder{core: coreEncoder, device: d, halEncoder: halEnc}, nil
+		return &CommandEncoder{
+			core:        coreEncoder,
+			device:      d,
+			halEncoder:  halEnc,
+			trackedRefs: make([]*core.ResourceRef, 0, 64),
+		}, nil
 	}
 
 	// Fallback: no pool available (e.g., non-HAL device). Use core's built-in

encoder_native.go

@@ -118,7 +118,11 @@ func (e *CommandEncoder) BeginRenderPass(desc *RenderPassDescriptor) (*RenderPas
 		return nil, err
 	}
 
-	return &RenderPassEncoder{core: corePass, encoder: e}, nil
+	return &RenderPassEncoder{
+		core:        corePass,
+		encoder:     e,
+		trackedRefs: make([]*core.ResourceRef, 0, 64),
+	}, nil
 }
 
 // BeginComputePass begins a compute pass.
@@ -139,7 +143,11 @@ func (e *CommandEncoder) BeginComputePass(desc *ComputePassDescriptor) (*Compute
 		return nil, err
 	}
 
-	return &ComputePassEncoder{core: corePass, encoder: e}, nil
+	return &ComputePassEncoder{
+		core:        corePass,
+		encoder:     e,
+		trackedRefs: make([]*core.ResourceRef, 0, 64),
+	}, nil
 }
 
 // CopyBufferToBuffer copies data between buffers.