forge-shader-grid

Render anti-aliased procedural grid floors in SDL3 GPU scenes.

Updated Mar 17, 2026
One-click install
npx skills add https://github.com/code-review-benchmark/coderabbit_prs2__forge-gpu__coderabbit__PR323__20260317 --skill forge-shader-grid
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: forge-shader-grid
Source: https://github.com/code-review-benchmark/coderabbit_prs2__forge-gpu__coderabbit__PR323__20260317/tree/main/.claude/skills/forge-shader-grid
Command: npx skills add https://github.com/code-review-benchmark/coderabbit_prs2__forge-gpu__coderabbit__PR323__20260317 --skill forge-shader-grid

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Adds a reusable, texture-free ground grid to real-time SDL3 GPU scenes, enabling crisp, scalable floor visuals without external art assets.

Core Features & Use Cases

  • Procedural grid generation in the fragment shader with fwidth-based anti-aliasing.
  • Supports multi-pipeline rendering in a single render pass to mix grid visuals with models.
  • Useful for debug visualization, scene setup, and rapid prototyping of ground planes.

Quick Start

Create the grid pipeline, bind the grid shaders, upload the grid geometry, and render a quad on the XZ plane.

Frequently Asked Questions about forge-shader-grid

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I render a procedural anti-aliased grid floor in SDL3?

To render a procedural anti-aliased grid floor in SDL3, you create a grid pipeline, bind grid shaders, upload geometry, and render a quad on the XZ plane. This generates crisp lines directly in the fragment shader without external textures.

What is fwidth-based anti-aliasing for shader grids?

Fwidth-based anti-aliasing for shader grids is a screen-space technique that uses derivative functions to calculate pixel frequency. It ensures procedural grid lines remain crisp and visually stable regardless of camera distance in SDL3 GPU scenes.

Does SDL3 GPU support multi-pipeline rendering in a single pass?

SDL3 GPU supports multi-pipeline rendering in a single pass, allowing you to mix procedural grid visuals with 3D models simultaneously. This enables efficient scene setup by enforcing a clear data flow for vertex and fragment uniforms across pipelines.

Can I generate SDL3 GPU grid lines without external art assets?

You can generate SDL3 GPU grid lines without external art assets by using procedural shader generation. This approach applies texture-free fragment shader computations to create scalable, fade-enabled ground planes for real-time 3D environments.

When do I need a procedural grid in a GPU scene?

You need a procedural grid in a GPU scene for debug visualization, scene setup, and rapid prototyping. It provides a reusable, texture-free ground plane that integrates with multi-pipeline rendering to establish spatial context in real-time SDL3 applications.