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stackgl / shader-school

:mortar_board: A workshopper for GLSL shaders and graphics programming
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Lesson 10 - Wrongly defines rotation matrix in row major form. #73

Closed esiegel closed 9 years ago

esiegel commented 10 years ago

I'm new to GLSL, but it seems that we should specify the translation matrix in column major order:

  mat2 rot = mat2(c, -s, s, c);
mikolalysenko commented 9 years ago

I'm not sure what the issue is here, but transposing a rotation matrix just changes whether it rotates forward or in reverse. In this case the behavior seems reasonable. Perhaps you could elaborate on what you find confusing?