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The JSON data currently has the format shown below.

Each entry in the outer array is a single distinct set of device features (array of "extensions" plus hash of implementation-dependent "limits").

Each feature set is associated with an array of "devices". For each of those devices, we have received a report containing that particular feature set; this is effectively just a compression mechanism so we don't have to duplicate the entire feature set description when dozens of devices have identical features.

Each device has:

Example output:

[
 {
  "devices": [
   {
    "driver": "6.14.10.8494",
    "os": "Windows",
    "renderer": "AMD 760G",
    "usercount": 1,
    "vendor": "ATI Technologies Inc."
   }
  ],
  "extensions": [
   "GL_AMD_performance_monitor",
   ...
   "WGL_EXT_swap_control"
  ],
  "limits": {
   "GL_ALIASED_LINE_WIDTH_RANGE[0]": "1",
   ...
   "GL_VERTEX_PROGRAM_ARB.GL_MAX_PROGRAM_TEMPORARIES_ARB": "160"
  }
 },
 {
  "devices": [
   {
    "driver": "6.14.10.10057",
    "os": "Windows",
    "renderer": "AMD M880G with ATI Mobility Radeon HD 4200",
    "usercount": 2,
    "vendor": "ATI Technologies Inc."
   },
   {
    "driver": "6.14.10.10179",
    "os": "Windows",
    "renderer": "AMD M880G with ATI Mobility Radeon HD 4250",
    "usercount": 3,
    "vendor": "ATI Technologies Inc."
   },
   {
    "driver": "3.3.10188",
    "os": "Linux",
    "renderer": "ATI Mobility Radeon HD 3400 Series",
    "usercount": 1,
    "vendor": "ATI Technologies Inc."
   },
   {
    "driver": "6.14.10.10151",
    "os": "Windows",
    "renderer": "ATI Mobility Radeon HD 3400 Series",
    "usercount": 2,
    "vendor": "ATI Technologies Inc."
   },
   ...
  ],
  "extensions": [
   "GL_AMDX_debug_output",
   ...
   "WGL_EXT_swap_control"
  ],
  "limits": {
   "GL_ALIASED_LINE_WIDTH_RANGE[0]": "1",
   ...
   "GL_VERTEX_PROGRAM_ARB.GL_MAX_PROGRAM_TEMPORARIES_ARB": "160"
  }
 },
 ...
}