Is this a typo, or I miss understand.

[rotal]

in file examples/mtlPtexViewer/mtlPtexViewer.mm
/////////////////////////////
#if TARGET_OS_EMBEDDED
shaderBuilder << "#define OSD_UV_CORRECTION if(t > 0.5){ ti += 0.01f; } else { ti += 0.01f; }\n";
#endif
//////////////////////////////
Do you mean?
//////////////////////////////
if(t > 0.5){ ti -= 0.01f; } else { ti += 0.01f; }
///////////////////////////////

[davidgyu]

You may be right, taking a look...

[jtran56]

Filed as internal issue #153938.