HLSL Validator

A lightweight validator for HLSL shaders, aimed at graphics developers and tool builders who need quick syntax and semantic checks during development.

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About This Tool

Purpose-built to inspect HLSL source code, the tool identifies syntax errors, semantic mismatches, and resource-binding conflicts in a language-aware manner. It analyzes vertex, pixel, geometry, and compute shaders, then reports precise line/column locations and actionable messages. The approach relies on a lightweight parser, AST construction, and symbol resolution to surface root causes, not runtime behavior. By separating concerns, it helps teams catch issues early and produce more reliable shaders. This tool is valuable for engine teams, shader authors, and build systems that require deterministic diagnostics without requiring a full SDK on every machine. In practice, users paste code, select the shader model and entry point, and receive structured diagnostics suitable for CI or editor feedback, plus recommendations for fixes. Unique value lies in its balance between simplicity and semantic depth, enabling quick iteration while preserving meaningful guidance for common shader problems. Core features include syntax validation, stage-aware semantic checks, binding consistency, and exportable diagnostics for integration into tooling chains. Use cases include pre-commit validation of shader files, CI pipelines validating shader changes, and education for students learning HLSL concepts.

How to Use

  1. Provide inputs: paste HLSL code, specify shader_model, entry_point, and optional macros.
  2. Optionally set include_paths and target_profile to reflect your project environment.
  3. Run validation to generate diagnostics and a final status.
  4. Review the list of errors/warnings with line numbers and suggested fixes.
  5. Iterate by updating code and re-running validation; repeat until diagnostics are clean.
  6. Export or copy the JSON report for CI or tooling integration.
How to use hlsl validator

Frequently Asked Questions

Find Quick Answers

What environments does it analyze?
The validator analyzes HLSL source code for syntax and semantic correctness, without executing on a GPU or relying on a specific driver.
Can it catch semantic errors?
Yes, it performs stage-aware semantic checks, including resource bindings, types, and cross-stage compatibility hints where applicable.
Is shader model support configurable?
The tool supports common shader models and flags potential incompatibilities for the chosen target, guiding adjustments.
CI integration?
Diagnostics can be exported in a structured JSON format suitable for automated pipelines and tooling.

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