Display Tests Day 6

Finally got it!  It was a combination of OpenGL row-major vs. column-major and a lesser known difference between projection matrices (DirectX screen-space origin is top-left, OpenGL is bottom-left).

8-5-2014 11-50-57 AM

8-5-2014 11-48-28 AM

8-5-2014 11-57-44 AM

Such a relief for me – I have literally not been sleeping well … my dreams incorporate concatenations, negative signs, etc.  I actually read this lecture a while back but I didn’t focus on the differences between OpenGL and DirectX because I didn’t actually have a solution for either platform until very recently.

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