Unity, Shader, and Technical Art Expert-Unity shader development assistant
AI-powered Unity shader & technical art assistant
Generates working C#/HLSL/GLSL code + examples. Suitable for ANY skill level.
I need help with a shader.
I need help writing a shader function.
I need help writing a C# function in Unity.
Explain raymarching. How is it used for volumetric fog?
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Overview — Unity, Shader, and Technical Art Expert
Purpose: A specialist assistant that focuses on practical, production-ready technical art for Unity (URP/HDRP/SRP), shader development (HLSL/GLSL/ShaderGraph/ShaderToy), and the integration of VFX and rendering techniques into game pipelines. Design goals: (1) provide code-first, minimal-explanation solutions and conversions (GLSL↔HLSL, ShaderToy→Unity full-screen passes), (2) explain mathematical/algorithmic concepts via code examples and small helper functions, and (3) give performance-minded, platform-aware advice (mobile/console/PC). Representative examples: • Convert a ShaderToy raymarch GLSL fragment into a Unity full-screen HLSL post-process: map uniforms (iResolution→_ScreenParams, iTime→_Time), adapt coordinate systems, and wrap the fragment in a Unity post-processing shader or custom blit pass. • Replace a CPU particle system with a GPU compute shader + indirect instancing to remove expensive draw-call and transform overhead while keeping artist-driven parameters. • Build a stylized water master shader in URP using ShaderGraph subgraphs (foam mask, shore blend, simple BRDF approximation) plus a small editor utility to switch features per-material. Scenarios: quick prototyping for an indie title,Unity Shader Technical Art optimizing a high-poly VFX for mobile, producing reusable artist-friendly shader libraries for a mid-sized studio. Would you like example code (C# / HLSL / GLSL / ShaderGraph snippets or full shader files)?
Core Functions and How They are Applied
Shader authoring, translation and prototyping
Example
Take a ShaderToy GLSL fragment (raymarch SDF scene) and produce a Unity HLSL full-screen pass: convert uniforms (iTime → _Time.y), adjust uv (fragCoord / iResolution → (uv * 2 - 1) * aspect), replace texture sampling with UNITY_SAMPLE/Tex2D equivalents, and wrap output into a RenderTexture pipeline for tone-mapping.
Scenario
A technical artist finds a ShaderToy effect and needs it in-game. The assistant supplies a conversion checklist, HLSL fragments for the shader body, and the minimal Unity integration steps (camera hook, render target, exposure/tone mapping), producing a working post-process in the game.
Performance analysis & platform-specific optimization
Example
Profile-heavy fragment shader: identify high-cost ops (branching, high-sample loops, expensive math), suggest cheaper approximations (precomputed lookup noise, analytic approximations for Fresnel or fog), implement LOD switching, add keyword-driven cheaper fallback, and convert per-pixel work to vertex or texture-based precomputation where possible.
Scenario
A mobile game runs below target FPS due to overdraw and complex lighting. The assistant provides a prioritized optimisation plan: depth pre-pass, reduce overdraw via alpha-tested geometry, replace expensive refractive calculations with screen-space approximations, implement GPU instancing and atlas textures, and shows shader snippets and SRP batching recommendations to reach the performance target.
Technical-art pipeline design & VFX systems integration
Example
Design a master stylized-water shader with toggleable features (foam, caustics, normal blending). Provide ShaderGraph subgraphs, a custom material inspector for artists, and a small C# editor utility to create and assign material variants across scenes. Include automated fallback variants for URP/HDRP and mobile.
Scenario
A studio needs consistent water visuals across dozens of levels. The assistant delivers a master shader (ShaderGraph + HLSL fallback), usage guidelines, and a small automation tool to assign the correct variant per-platform and to batch-update parameters in scenes, reducing iteration time and ensuring visual consistency.
Target user groups and why they benefit
Technical Artists & VFX Artists
Who: Artists who author shaders, build VFX, create artist-facing tools, and act as the bridge between art and engineering. Why they benefit: They get concise, code-first examples, best-practice patterns for making artist-friendly shader systems (parameters, keyword workflows, ShaderGraph subgraphs), math explained via implementation, and help converting prototypes into robust production shaders that are performant across platforms.
Game Developers, Indie Studios, Students & Graphics Programmers
Who: Gameplay/engine programmers, indie developers prototyping visuals, students learning HLSL/GLSL, and small teams needing to ship performant rendering. Why they benefit: They receive practical HLSL/GLSL/C# snippets, porting guides (GLSL→HLSL or ShaderToy→Unity), profiling and platform guidance (mobile vs PC), and concise troubleshooting steps for integration (render passes, RT formats, SRP tips). The assistant assumes basic Unity familiarity and focuses on delivering immediately usable code and pipeline advice.
How to use Unity, Shader, and Technical Art Expert
Visit aichatonline.org for a free trial without login, also no need for ChatGPT Plus.
Open the site to try the tool instantly; no account or ChatGPT Plus required. Use a modern browser and allow access to clipboard for easy copy/paste of shader snippets.
Prepare prerequisites
Have Unity (LTS recommended), a recent Render Pipeline choice (Built-in, URP or HDRP), a text editor/IDE (VS Code or Visual Studio), and basic familiarity with HLSL/ShaderLab or Shader Graph. Optional: RenderDoc, Unity Profiler or platform-specific GPU capture tools for profiling.
Choose common workflows
Typical use cases: authoring HLSL/GLSL shaders, converting ShaderToy to Unity, creating Shader Graph nodes, optimizing mobile/PC shaders, building real-time VFX, and producing C# integration snippets for materials and shader properties.
How to interact effectively
Be specific: include Unity version, target render pipeline, platform (mobile/PC/console), desired visual reference or screenshot, and performance budget. Provide minimal reproducible examples (small shader snippets or a short scene description) to get actionable code or fixes.
Tips for optimal experience
Request single-purpose outputs (oneUnity Shader Art Guide shader or one optimization at a time), ask for both 'explain' and 'code' modes if needed, test delivered shaders on target hardware, and attach profiling metrics (frame time, draw calls) when seeking performance advice.
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Five common questions and answers
What can Unity, Shader, and Technical Art Expert do for my project?
It generates and explains HLSL/GLSL/ShaderLab/Shader Graph solutions, produces C# glue code for material/property binding, converts ShaderToy/GLSL to Unity-compatible shaders, diagnoses visual and performance issues, suggests optimization tactics (precision, branching, instancing), and gives step-by-step VFX recipes and integration advice for specific pipelines and platforms.
Which shader languages and pipelines are supported?
Supports HLSL, GLSL (conversion workflows), ShaderLab (Unity surface and fragment shaders), Shader Graph node patterns, and guidance for Built-in, URP, and HDRP pipelines. Answers include pipeline-specific pragmas, SRP considerations, and variant management advice.
How do you approach shader performance and platform-specific constraints?
I recommend measurable strategies: reduce variant count, prefer half where safe, minimize dependent texture reads, use GPU instancing and SRP Batcher, lower arithmetic complexity, and simplify branch usage on tile-based GPUs. I also advise concrete profiling steps (Unity Profiler, RenderDoc captures, Xcode/Adreno captures) and pragmatic tradeoffs for mobile vs desktop.
Can you convert ShaderToy GLSL to a Unity-ready shader?
Yes. Typical steps: map ShaderToy uniforms (iResolution, iTime, iChannel*) to Unity properties, adapt coordinate systems and UVs, replace GLSL built-ins with Unity equivalents, wrap code in a fragment function or Shader Graph Custom Function, and set correct sampler types and precision. Watch for differences in texture sampling, coordinate origin, and available extensions.
Can you provide example shaders or full code?
Yes. Would you like example code? If yes, specify Unity version, render pipeline (Built-in/URP/HDRP), target platform, and desired effect so I can produce a complete, runnable shader and minimal C# integration snippet.