Rendering error on Intel GPUs in OSX

[cuchaz]

Hardware Overview:

  Model Name:                                MacBook Pro
  Model Identifier:                           MacBookPro12,1
  Processor Name:                         Intel Core i7
  Processor Speed:                        3.1 GHz
  Number of Processors:                1
  Total Number of Cores:               2
  L2 Cache (per Core):                    256 KB
  L3 Cache:                                     4 MB
  Hyper-Threading Technology:    Enabled
  Memory:                                        16 GB
  Boot ROM Version:                      186.0.0.0.0
  SMC Version (system):                2.28f7

Intel Iris Graphics 6100:

  Chipset Model:                 Intel Iris Graphics 6100
  Type:                                  GPU
  Bus:                                   Built-In
  VRAM (Dynamic, Max):    1536 MB
  Vendor:                              Intel
  Device ID:                          0x162b
  Revision ID:                       0x0009
  Metal:                                 Supported, feature set macOS GPUFamily1 v4
  Displays:
Color LCD:
  Display Type:                                    Built-In Retina LCD
  Resolution:                                        2560 x 1600 Retina
  Framebuffer Depth:                          24-Bit Color (ARGB8888)
  Main Display:                                    Yes
  Mirror:                                                Off
  Online:                                               Yes
  Rotation:                                            Supported
  Automatically Adjust Brightness:    No