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Driver internal shader cache corrupted

Question asked by ext3h on Aug 21, 2020
Latest reply on Aug 21, 2020 by elstaci

Observed this issue on two customer systems so far.


We have a simple Win32 OpenGL application, which crashed due to unrelated reasons close to shader compilation via OpenGL API.


On both customer systems, we faced afterwards a driver internal corruption when attempting to link the shader again. Output from `glGetProgramInfoLog`:


Fragment shader(s) failed to link.
Fragment link error: HW_UNSUPPORTED.
ERROR: Internal compile error, error code: E_SC_LITERAL_NOT_DEFINED
Shader not supported by HWWARNING: warning(#276) Symbol "color" usage doesn't match between two stages


In both cases a recovery was only possible by re-installing the driver package, thereby removing the cache. In both cases, the same shader could be linked without warnings afterwards.