添加 claude code game studios 到项目

.claude/rules/shader-code.md

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+---
+paths:
+  - "assets/shaders/**"
+---
+
+# Shader Code Standards
+
+All shader files in `assets/shaders/` must follow these standards to maintain
+visual quality, performance, and cross-platform compatibility.
+
+## Naming Conventions
+- File naming: `[type]_[category]_[name].[ext]`
+  - `spatial_env_water.gdshader` (Godot)
+  - `SG_Env_Water` (Unity Shader Graph)
+  - `M_Env_Water` (Unreal Material)
+- Use descriptive names that indicate the material purpose
+- Prefix with shader type: `spatial_`, `canvas_`, `particles_`, `post_`
+
+## Code Quality
+- All uniforms/parameters must have descriptive names and appropriate hints
+- Group related parameters (Godot: `group_uniforms`, Unity: `[Header]`, Unreal: Category)
+- Comment non-obvious calculations (especially math-heavy sections)
+- No magic numbers — use named constants or documented uniform values
+- Include authorship and purpose comment at the top of each shader file
+
+## Performance Requirements
+- Document the target platform and complexity budget for each shader
+- Use appropriate precision: `half`/`mediump` on mobile where full precision isn't needed
+- Minimize texture samples in fragment shaders
+- Avoid dynamic branching in fragment shaders — use `step()`, `mix()`, `smoothstep()`
+- No texture reads inside loops
+- Two-pass approach for blur effects (horizontal then vertical)
+
+## Cross-Platform
+- Test shaders on minimum spec target hardware
+- Provide fallback/simplified versions for lower quality tiers
+- Document which render pipeline the shader targets (Forward/Deferred, URP/HDRP, Forward+/Mobile/Compatibility)
+- Do not mix shaders from different render pipelines in the same directory
+
+## Variant Management
+- Minimize shader variants — each variant is a separate compiled shader
+- Document all keywords/variants and their purpose
+- Use feature stripping where possible to reduce build size
+- Log and monitor total variant count per shader