hey thanks for posting! dev here if anyone has any questions about this software or fractals in general. Gregory's work here is really impressive, huge fan. Go fractals!
vive only, there is a build for vive on there. You can also get the source, there is a desktop interface but it's still under development and you probably need to know unity to get it to work
I used to think the same thing, until I learned that there are entire chapters of contracts textbooks on how to use and manage ambiguities effectively. a well-written contract many times has intentional ambiguities meant to limit liability in certain cases, or to use as fodder in negotiations.
I think they're referring to quaternions. May require some trig to generate the initial quaternion, but then in your number crunching code you can multiply with other quaternions (representing rotation composition) and then even convert the result to a 3x3 rotation matrix, both with no trig. This is how game engines handle storing 3D rotation.
If you load a texture like from a JPEG and use that in a shader, the texture is converted to gamma space when loaded, so you need no correction. If you are generating colors in the shader, you will need to correct for gamma.
GL does have the capability to handle linear color space buffers correctly, but you have to enable SRGB, and initialize the framebuffer correctly with SRGB color space, and I'm not sure if GLES (WebGL) can do this.
What happens if you need to alter the color of a texture that's been loaded? For example, if you want to do diffuse shading on a sphere with a texture mapped to it. Do you first need to convert the texture pixel back to linear space, apply the shading, and then correct for gamma?
I believe that, in WebGL, if you sample the texture in a shader the resulting color is in a linear space. And output colors from a fragment shader are meant to be linear as well.
I realize now that I can't fully answer your question, because I'm unsure whether WebGL implementations are supposed to respect color correction information in the image file format. But I'm pretty sure that the color space in WebGL "shader land" is always linear.
Gamma correction is achieved by raising the color to a power, the power being the gamma value. So sqrt is the same as gamma correction with gamma = 2.0; On typical monitors, gamma is 2.2 , so this is close and maybe faster if the GPU has optimizations for fast square root.
