This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.
To capture the video (filesize: 19MB), using the free "QuickTime Player" application:
// | |
// Compile for emscripten using | |
// emcc -Iinclude SingleFileOpenGLTex.cpp \ | |
-O2 -std=c++14 -s TOTAL_MEMORY=33554432 -s USE_SDL_IMAGE=2 -s SDL2_IMAGE_FORMATS='["png"]' --preload-file examples/data -s USE_SDL=2 -o html/SingleFileOpenGLTex.html | |
// where the following images must be located in a subfolder | |
// - examples/data/test.png | |
// - examples/data/cartman.png | |
// - examples/data/cube-negx.png | |
// - examples/data/cube-negz.png | |
// |
M[16],X=16,W,k;main(){T(system("stty cbreak") | |
);puts(W&1?"WIN":"LOSE");}K[]={2,3,1};s(f,d,i | |
,j,l,P){for(i=4;i--;)for(j=k=l=0;k<4;)j<4?P=M | |
[w(d,i,j++)],W|=P>>11,l*P&&(f?M[w(d,i,k)]=l<< | |
(l==P):0,k++),l=l?P?l-P?P:0:l:P:(f?M[w(d,i,k) | |
]=l:0,++k,W|=2*!l,l=0);}w(d,i,j){return d?w(d | |
-1,j,3-i):4*i+j;}T(i){for(i=X+rand()%X;M[i%X] | |
*i;i--);i?M[i%X]=2<<rand()%2:0;for(W=i=0;i<4; | |
)s(0,i++);for(i=X,puts("\e[2J\e[H");i--;i%4|| | |
puts(""))printf(M[i]?"%4d|":" |",M[i]);W-2 |