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# IGT GPU Tools API
**IGT GPU Tools** provides a set of C libraries and helper macros for writing and
running test cases targeting the Linux graphics stack.
Generated documentation is available at:
[API Reference](https://drm.pages.freedesktop.org/igt-gpu-tools/api_reference/index.html)
## Purpose
The API is designed to:
- Simplify interaction with kernel graphics drivers (e.g., via DRM ioctls)
- Provide reusable infrastructure for writing test cases
- Offer abstractions for managing displays, buffers, events, and execution contexts
## Key Components
- `igt_assert`, `igt_skip`, `igt_require`: Macros for managing test flow
- `igt_fixture`, `igt_subtest`: Infrastructure for setup/teardown and subtest isolation
Helper modules for:
- Buffer objects (e.g., `intel_buf`)
- Display configuration (e.g., `kmstest`, `igt_display`)
- Memory mapping, fences, command streams, and performance counters
## Examples
For code examples, browse the `tests/` and `lib/` directories.
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