Steps to reproduce:

1) Download attached project 'BasicHexTest.zip' and open in Unity
2) Build and Run 'HexTestScene' on a device
Note: Pattern drawn by the shader is pixelated(check attached image 'pixelated.png')

Expected result: Pattern drawn by the shader supposed to be smooth(check attached image 'smooth.png')

Reproduced with: 5.3.7p4, 5.4.5p1, 5.5.3f1, 5.6.0f2, 2017.0a6

DUT:
Reproduced with:
Samsung GT I8190, OS:4.1.2, CPU:armeabi-v7a, GPU:Mali-400 MP, Build:samsung/goldenxx/golden:4.1.2/JZO54K/I8190XXAMG4:user/release-keys

Samsung GT I9300 (Galaxy S3), OS:4.3, CPU:armeabi-v7a, GPU:Mali-400 MP, Build:samsung/m0xx/m0:4.3/JSS15J/I9300XXUGNG3:user/release-keys

Not reproduced with:
Samsung SM G925F (Galaxy S6 Edge), OS:6.0.1, CPU:arm64-v8a, GPU:Mali-T760, Build:samsung/zeroltexx/zerolte:6.0.1/MMB29K/G925FXXU5DQA7:user/release-keys

Samsung SGH I747 (Galaxy S3), OS:4.1.1, CPU:armeabi-v7a, GPU:Adreno (TM) 225, Build:samsung/d2uc/d2att:4.1.1/JRO03L/I747UCDLK3:user/release-keys

Motorola XT1032, OS:5.1, CPU:armeabi-v7a, GPU:Adreno (TM) 305, Build:motorola/falcon_retuglb/falcon_umts:5.1/LPBS23.13-58-2/2:user/release-keys

Huawei HUAWEI U9508, OS:4.0.4, CPU:armeabi-v7a, GPU:Immersion.16, Build:Huawei/U9508/hwu9508:4.0.4/HuaweiU9508/C00B107:user/ota-rel-keys,release-keys

Htc HTC Desire 500, OS:4.1.2, CPU:armeabi-v7a, GPU:Adreno (TM) 203, Build:htc/htc_europe/z4u:4.1.2/JZO54K/268770.3:user/release-keys

iPhone 6 iOS 10.2.1