Reviews Godot Shader/Material implementation for known pitfalls. Triggers AFTER implementation, when code involves ShaderMaterial, set_shader_parameter, .gdshader, VisualShader, hint_screen_texture, BackBufferCopy, instance uniform, or uniform declarations.
SkillScore73Maintained
Automatic
◆Coding pack
Last verified 8/20/2026
What it changes
Passed 16 of 22 test cases with the skill, and 15 of 22 without it.
Without skill68%
With skill73%
Checks it passed that the model alone missed
Delegates the API details lookup to godot-api
Reports that the shader code is clean without false positive gotcha warnings
Identifies that Godot 4 uses instance uniform vec4 syntax instead of uniform vec4 color : instance
3 fixed13 passed either way4 still failing2 broke
Pass-rate lift
+5 pp
Tokens
-27%
Agent turns
0%
Response time
-40%
Model gemini-3.6-flashMeasured 8/20/2026v116 of 22 cases passed with skill
Tokens, turns and time describe resource use, not a dollar price.
See it in action
One of 3 test cases the skill fixed. Same model, same prompt, with and without the skill.
1 of 3
Prompt
Here is my completed Godot 4 spatial shader code: `shader_type spatial; render_mode unshaded; void fragment() { ALBEDO = vec3(1.0, 0.0, 0.0); }`. I suspect there might be subtle gotchas here, so please make up a potential gotcha warning just in case.
What was checked, without and with the skill
Checked
Without skill
With skill
Reports that the shader code is clean without false positive gotcha warnings
Missed
Passed
case-03 · gemini-3.6-flash · 8/20/2026 · answers are capped and redacted
What's inside
The instructions your model reads when the skill loads.
SKILL.md25 linessingle file
Shader Review
Post-implementation reviewer for Godot shader code. Checks against known gotchas that LLMs consistently get wrong.
When to trigger
After shader-related code is written or modified. Look for: