Output of vertex shader 'v_gradient' not read by fragment shader

Question

When i run my app on ios 10 device and xcode 8 i'm getting the following message in debug console. Can any one know why this is happening

ERROR /BuildRoot/Library/Caches/com.apple.xbs/Sources/VectorKit/VectorKit-1230.32.8.29.9/GeoGL/GeoGL/GLCoreContext.cpp 1763: InfoLog SolidRibbonShader: ERROR /BuildRoot/Library/Caches/com.apple.xbs/Sources/VectorKit/VectorKit-1230.32.8.29.9/GeoGL/GeoGL/GLCoreContext.cpp 1764: WARNING: Output of vertex shader 'v_gradient' not read by fragment shader

Would you be able to post your vertex and fragment shader source, or at least their inputs and outputs ? — MrDanTheMan, Dec 24 '16 at 02:02
This is clearly a problem with iOS as I have the most basic concept app with a map running on the 10.2 simulator and I get the same error. No error with 9.x simulator. — Aaron Bratcher, Jan 05 '17 at 11:42
@AaronBratcher I would love to agree with you but... on my app everywhere I got this warning on the simulator make the app crash on a real iPhone 6s with ios 9.01 — Jaime Agudo, Jan 08 '17 at 19:25

score 2 · Answer 1 · edited May 23 '17 at 10:31

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The error is related to the Simulator's rendering methods & framework, as opposed to those of a real device.

The issue should not reproduce on a real device.

Please see a full answer here

edited May 23 '17 at 10:31

Community

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answered Jan 27 '17 at 12:58

rrpinc

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I get this on a real device - iPhone 5 with iOS 10.3.2 – Moshe Katz May 25 '17 at 19:38

Output of vertex shader 'v_gradient' not read by fragment shader

1 Answers1