Windows 7
VS 2013 express
directx june 2010
In one tutorial lesson the code renders a triangle made up of transformed vertices.
Vertices are defined in a clockwise fashion, this being the default in directx.
If I define them in a counter-clockwise order the triangle isn't rendered.
In the next lesson we go thru the geometry pipeline, so we start w/ untransformed vertices. Here the order in which the vertices are defined doesn't seem to matter the triangle is rendered. WHY?
Note: I plotted these vertices in model space on a cartesian coordinate system (0,0) Where X and y intersect. To the right of (0,0) X is >0, and above (0,0) Y is >0.
The z coordinate is the same for each vertice, so essentially the triangle is 2D.
The next lesson is entitled "Rendering depth" that's where w'ell take care of z w/ & the zbuffer.

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2 replies to this topic

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#3
Members - Reputation: **162**

Posted 28 July 2014 - 09:19 PM

Thanx for your answer.
For me that means that the problems lies w/ me. Cull mode is not modified in the code!
I thought that the error might be how i plotted the vertices in model space (2D cartesian coordinates)!
I'll work on it more.
Thanx again!