IVRSystem::GetProjectionMatrix

HmdMatrix44_t GetProjectionMatrix( Hmd_Eye eEye, float fNearZ, float fFarZ, GraphicsAPIConvention eProjType )

Returns the projection matrix to use for the specified eye.

• eEye - Eye_Left or Eye_Right. Determines which eye the function should return the projection for.
• fNearZ - distance to the near clip plane in meters
• fFarZ - distance to the far clip plane in meters
• eProjType - Modifies the return value to match the conventions of the specified API. One of:
  • API_DirectX
  • API_OpenGL