I have created a grouped list of estimated cost of instructions according to this Chinese reference. This may not be accurate, but is mostly correct from my experience. Some intuitions are: Abs, saturate are free (Why is clamp in GLSL not free? I doubt it) Log, exp, sqrt are almost free! (That’s why Kernel Foveated Rendering…
SIGGRAPH Asia 2014 Course Materials from iq/rgba
iñigo quilez kindly provides his SIGGRAPH Asia 2014 Course Materials of ShaderToy with me via email. Thank you iq! Thinking implicit: 2D, non polygonal shapes Coordinates and color gradients (That link is depracated, so I personally recommend this link instead) Shapping Texture Mapping Animation Reactivity More Media Yet More Media Thinking implicit: 3D Raymarching Modeling (primitives and…
Tutorial of Ray Casting, Ray Tracing, Path Tracing and Ray Marching
Introduction As GPU power is becoming significantly better than CPU, ray casting / tracing, path tracing, and ray marching is widely used in 4k intros, demoscenes, and movies to create interactive 3D graphical scenes. Thanks to all the references listed in the end, I learnt so much about and I would like to share with the knowledge…
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