This sample driver implementation provide multiple subcomponents required to build and test an Installable Client Driver (ICD):

• Common Infrastructure
• Implementation for Intel GPUs
• Null driver
• Sample Driver Tests
  • Now includes Golden images to verify xgl_render_tests rendering.

common/ provides helper and utility functions, as well as all XGL entry points except xglInitAndEnumerateGpus. Hardware drivers are required to provide that function, and to embed a "XGL_LAYER_DISPATCH_TABLE *" as the first member of XGL_PHYSICAL_GPU and all XGL_BASE_OBJECT.

Thread safety

We have these static variables

• common/icd.c:static struct icd icd;
• intel/gpu.c:static struct intel_gpu *intel_gpus;

They require that there is no other thread calling the ICD when these functions are called

• xglInitAndEnumerateGpus
• xglDbgRegisterMsgCallback
• xglDbgUnregisterMsgCallback
• xglDbgSetGlobalOption