fix: complete gputypes integration with wgpu-native v27 (#4)

* fix: complete gputypes integration with wgpu-native v27 compatibility

Conversion layer fixes:
- TextureViewDimension values match between gputypes and wgpu-native v27
- Add struct padding for FFI alignment (sampler/texture/storage binding layouts)
- Fix VertexFormat, VertexStepMode, TextureSampleType conversions

Example fixes:
- Use CreatePipelineLayoutSimple in cube, rotating-triangle, mrt, textured-quad
- Fix GetModuleHandleW: use kernel32.dll instead of user32.dll (8 examples)
- render_bundle: fallback shader without primitive_index (works on all GPUs)

Default value fixes:
- sampler: MaxAnisotropy >= 1
- texture: SampleCount >= 1, MipLevelCount >= 1

All 11 examples now work on all supported hardware.

* docs: update documentation for v0.2.0 gputypes integration

CHANGELOG.md:
- Document conversion layer and all fixes

README.md:
- Update wgpu-native version to v27.0.4.0

ROADMAP.md (modernized following GitHub best practices):
- Add disclaimer about plans vs commitments
- Use phase labels instead of hardcoded dates
- Add How to Contribute section
- Link to GitHub Issues/Projects for live tracking
- Add upstream dependencies tracking

examples/README.md:
- Update version to 0.2.0
- Add gputypes note

* chore: exclude gocyclo/cyclop/funlen for conversion files

Conversion functions (toWGPUTextureFormat, fromWGPUTextureFormat,
toWGPUVertexFormat) have large switch statements for enum mapping
which are inherently high complexity but straightforward.

CreateRenderPipeline has high complexity due to wire struct
initialization but is a single-purpose function.

Exclude convert.go and render_pipeline.go from gocyclo/cyclop/funlen
checks since these patterns are acceptable for FFI conversion code.

Author: kolkov

.golangci.yml

@@ -79,10 +79,18 @@ linters:
         linters:
           - unused
           - revive
-      # FFI render_pipeline has C struct padding
+      # Conversion functions have large switch statements - inherently high complexity but straightforward
+      - path: convert\.go
+        linters:
+          - gocyclo
+          - cyclop
+          - funlen
+      # FFI render_pipeline has C struct padding and complex CreateRenderPipeline
       - path: render_pipeline\.go
         linters:
           - unused
+          - gocyclo
+          - cyclop
       # wgpu.go has procs for future use and long init
       - path: wgpu\.go
         linters:

CHANGELOG.md

@@ -19,11 +19,21 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Integration with [gogpu ecosystem](https://github.com/gogpu) via gputypes
 - Full webgpu.h spec compliance for enum values
+- Comprehensive conversion layer (`wgpu/convert.go`) for wgpu-native v27 compatibility
+  - TextureFormat (~45 formats), VertexFormat (~30 formats)
+  - VertexStepMode, TextureSampleType, TextureViewDimension, StorageTextureAccess
+  - Wire structs with correct FFI padding (uint64 flags)
 
 ### Fixed
 
 - TextureFormat enum values mismatch (BGRA8Unorm was 0x17, now correct 0x1B)
 - Compatibility with gogpu Rust backend
+- Struct padding in BindGroupLayout wire structs (sampler, texture, storage)
+- PipelineLayout creation in examples (use CreatePipelineLayoutSimple)
+- GetModuleHandleW: kernel32.dll instead of user32.dll (all Windows examples)
+- Sampler MaxAnisotropy default (wgpu-native requires >= 1)
+- Texture SampleCount/MipLevelCount defaults (wgpu-native requires >= 1)
+- render_bundle shader: fallback without primitive_index (works on all GPUs)
 
 ### Migration Guide
 

README.md

@@ -38,7 +38,7 @@ Pure Go WebGPU bindings using [goffi](https://github.com/go-webgpu/goffi) + [wgp
 ## Requirements
 
 - Go 1.25+
-- wgpu-native v24.0.3.1 ([download](https://github.com/gfx-rs/wgpu-native/releases))
+- wgpu-native v27.0.4.0 ([download](https://github.com/gfx-rs/wgpu-native/releases))
 
 ## Installation