| #include <SDL2/SDL.h> | |
| #define MUS_PATH "Roland-GR-1-Trumpet-C5.wav" | |
| // prototype for our audio callback | |
| // see the implementation for more information | |
| void my_audio_callback(void *userdata, Uint8 *stream, int len); | |
| // variable declarations | |
| static Uint8 *audio_pos; // global pointer to the audio buffer to be played |
| /* | |
| Minimal SDL2 + OpenGL3 example. | |
| Author: https://github.com/koute | |
| This file is in the public domain; you can do whatever you want with it. | |
| In case the concept of public domain doesn't exist in your jurisdiction | |
| you can also use this code under the terms of Creative Commons CC0 license, | |
| either version 1.0 or (at your option) any later version; for details see: | |
| http://creativecommons.org/publicdomain/zero/1.0/ |
| // Something relating to a falling sand game | |
| // | |
| // Usage: | |
| // | |
| // After opening the Processing IDE, copy it into an empty new sketch. | |
| // Just as simple as that. | |
| // | |
| // | |
| // Playing: | |
| // |
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);
| #define STB_IMAGE_IMPLEMENTATION | |
| #define STB_IMAGE_WRITE_IMPLEMENTATION | |
| #define STBI_ONLY_PNG | |
| #define STBI_ONLY_JPEG | |
| #define STBI_ONLY_BMP | |
| #define STBI_ONLY_GIF | |
| #include "stb_image.h" | |
| #include "stb_image_write.h" |
| // To compile with gcc: (tested on Ubuntu 14.04 64bit): | |
| // g++ sdl2_opengl.cpp -lSDL2 -lGL | |
| // To compile with msvc: (tested on Windows 7 64bit) | |
| // cl sdl2_opengl.cpp /I C:\sdl2path\include /link C:\path\SDL2.lib C:\path\SDL2main.lib /SUBSYSTEM:CONSOLE /NODEFAULTLIB:libcmtd.lib opengl32.lib | |
| #include <stdio.h> | |
| #include <stdint.h> | |
| #include <assert.h> | |
| #include <SDL2/SDL.h> | |
| #include <SDL2/SDL_opengl.h> |
| // Hyperboloc functions by toneburst from | |
| // https://machinesdontcare.wordpress.com/2008/03/10/glsl-cosh-sinh-tanh/ | |
| // These are missing in GLSL 1.10 and 1.20, uncomment if you need them | |
| /* | |
| /// COSH Function (Hyperbolic Cosine) | |
| float cosh(float val) | |
| { | |
| float tmp = exp(val); | |
| float cosH = (tmp + 1.0 / tmp) / 2.0; |
| SPC | |
| SPC: find file | |
| , switch buffer | |
| . browse files | |
| : MX | |
| ; EX | |
| < switch buffer | |
| ` eval | |
| u universal arg | |
| x pop up scratch |
| #if 0 // self-compiling code | |
| gcc -std=c99 -Wall -Wextra -pedantic -Werror -g -O4 -march=native $0 -lm || exit 1 | |
| exec time ./a.out | |
| #endif | |
| // Blue Noise texture generation using the void-and-cluster algorithm | |
| // implemented by Martin Fiedler <keyj@emphy.de> | |
| // using an algorithm description written by Alan Wolfe: | |
| // https://blog.demofox.org/2019/06/25/generating-blue-noise-textures-with-void-and-cluster/ |
