Version 7 and Perspective Orientability · 3D Sprite Renderer and Convex Hull Editor update for 4 March 2017

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Patchnotes via Steam Community

With version 7 we now have fully working perspecitive projection orientability maps.

https://github.com/dmdware/sped/blob/master/shaders/orpersp2.frag
https://github.com/dmdware/sped/blob/master/shaders/orpersp2.vert

The advantage of using orientability maps compared to using 100's+ of vertices per model is the great reduction in matrix multiplication, along with unlimited detail and other mentioned benefits.

Check the "up_info2.txt" example included in the "renders/" folder for an example of orientability maps in action.

Note: although a matrix multiplication is used at the end of the perspective fragment shader to obtain fragment depth, this can be simplified (eg, using a dot product, a scale and offset), resulting in only four matrix operations in the vertex shader. Parameters such as search jump offsets, minimum discard distance and number of search steps could also be adjusted based on object distance, detailization, and other factors.

Changed files in this update

3D Sprite Renderer and Convex Hull Editor Content Depot 468901

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