| void renderSphere(float cx, float cy, float cz, float r, int p) | |
| { | |
| float theta1 = 0.0, theta2 = 0.0, theta3 = 0.0; | |
| float ex = 0.0f, ey = 0.0f, ez = 0.0f; | |
| float px = 0.0f, py = 0.0f, pz = 0.0f; | |
| GLfloat vertices[p*6+6], normals[p*6+6], texCoords[p*4+4]; | |
| if( r < 0 ) | |
| r = -r; | |
| /* | |
| Check SSE/AVX support. | |
| This application can detect the instruction support of | |
| SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, SSE4a, SSE5, and AVX. | |
| */ | |
| #include <iostream> | |
| #ifdef _MSC_VER | |
| #include <intrin.h> | |
| #endif |
Please consider using http://lygia.xyz instead of copy/pasting this functions. It expand suport for voronoi, voronoise, fbm, noise, worley, noise, derivatives and much more, through simple file dependencies. Take a look to https://github.com/patriciogonzalezvivo/lygia/tree/main/generative
float rand(float n){return fract(sin(n) * 43758.5453123);}
float noise(float p){
float fl = floor(p);
float fc = fract(p);
| float powf_fast(float a, float b) { | |
| union { float d; int x; } u = { a }; | |
| u.x = (int)(b * (u.x - 1064866805) + 1064866805); | |
| return u.d; | |
| } |
| <?xml version="1.0" encoding="UTF-8"?> | |
| <opml version="1.0"> | |
| <head> | |
| <title>Graphics, Games, Programming, and Physics Blogs</title> | |
| </head> | |
| <body> | |
| <outline text="Tech News" title="Tech News"> | |
| <outline type="rss" text="Ars Technica" title="Ars Technica" xmlUrl="http://feeds.arstechnica.com/arstechnica/index/" htmlUrl="https://arstechnica.com"/> | |
| <outline type="rss" text="Polygon - Full" title="Polygon - Full" xmlUrl="http://www.polygon.com/rss/index.xml" htmlUrl="https://www.polygon.com/"/> | |
| <outline type="rss" text="Road to VR" title="Road to VR" xmlUrl="http://www.roadtovr.com/feed" htmlUrl="https://www.roadtovr.com"/> |
| // public domain | |
| // | |
| // algorithm adopted from: | |
| // https://dspguru.com/dsp/tricks/fixed-point-atan2-with-self-normalization/ | |
| // | |
| // when ran without arguments, it simply calculates the maximum error between | |
| // the functions below and atan2f | |
| // | |
| // it tests all (x,y) values from -100.00 to +100.00 | |
| // |
| // quat | |
| const quat quat::IDENTITY(0.0f, 0.0f, 0.0f, 1.0f); | |
| const quat quat::ZERO(0.0f, 0.0f, 0.0f, 0.0f); | |
| quat::quat() {} | |
| quat::quat(float x, float y, float z, float w) : x(x), y(y), z(z), w(w) {} | |
| quat::quat(const vec3 &axis, float angle) { | |
| angle *= 0.5f; | |
| float s = sinf(angle); |
In /etc/default/grub, modify:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash noibrs noibpb nopti nospectre_v2 nospectre_v1 l1tf=off nospec_store_bypass_disable no_stf_barrier mds=off tsx=on tsx_async_abort=off mitigations=off"
Then sudo update-grub
