Some time ago I had the intention of carrying out a project where I would use the same code that is used in GLSL but using C/C++. I checked that it worked and added things to see how my computer reacted to so much stress since many of the examples are very expensive to render, from all that I developed "irrBM" or what is the same, "irrBenchMark". You can modify the parameters such as resolution, full screen, driver,...
NOTE: Rendering the scenes by CPU (Software) is very expensive and takes a long time, by GPU (OpenGL) they are faster.
For now it only shows statistics using the own ones provided by irrlicht3D. I am completing and improving the code to add more like knowing the temperature, video RAM memory, fan speed,...
Example codes:
C/C++
Code: Select all
#define N 23 // number of sources
f32 rnd(f32 i)
{
return mod(4000.0f * sin(23464.345f * i + 45.345f), 1.0f);
}
f32 srnd(f32 i)
{
return 2.0f * rnd(i) - 1.0f;
}
vec3 test(u32 x, u32 y)
{
vec2 uv = (2.0f * vec2(x,y) - iResolution ) / iResolution.v[1];
vec2 mouse = vec2(1.5f * cos(0.2345f * iTime) - 0.7f * sin(iTime), sin(0.3214f * iTime) + 0.5f * cos(1.234f * iTime)) / 1.5f;
f32 xo = -0.75f, xt = xo + 0.03f;
f32 Phi[N],D2[N];
for (u32 i=0; i<N; i++)
{
vec2 P = 0.99f * vec2(sin(4.0f * xt), -cos(4.0f * xt));
xt += (1.54f / f32(N)) * (1.0f + 0.7f * srnd(f32(i)));
f32 dm = length(mouse-P), phim = dm, d = length(uv-P), phi = d - 0.1f * iTime;
Phi[i] = (2.0f * PI / 0.04f) * (phi - phim);
D2[i] = pow(d, 1.0f);
if (d<0.01f)
return vec3(0.0f, 0.0f, 1.0f);
}
// combines waves or energy
f32 v = 0.0f;
for (u32 i=0; i<N; i++)
{
for (u32 j=0; j<N; j++)
v += cos(Phi[j] - Phi[i]) / (D2[i] * D2[j]);
}
v = sqrt(v / 2.0f);
v = v * 4.5f / f32(N);
return v * vec3(1.0f, 0.5f, 0.25f);
}
Code: Select all
uniform float iTime;
uniform vec2 iResolution;
#define N 23 // number of sources
float rnd(float i)
{
return mod(4000.*sin(23464.345*i+45.345),1.0);
}
float srnd(float i)
{
return 2.0 * rnd(i) - 1.0;
}
void main( out vec4 fragColor, in vec2 fragCoord )
{
vec2 uv = (2.0 * gl_FragCoord.xy - iResolution ) / iResolution.y;
// --- calc sources contribs
vec2 mouse = vec2(1.5*cos(.2345*iTime)-.7*sin(iTime),sin(.3214*iTime)+.5*cos(1.234*iTime))/1.5;
float x = -0.75, xt = x;
float Phi[N], D2[N];
for (int i=0; i<N; i++)
{
vec2 P = 0.99 * vec2(sin(4.0 * xt), -cos(4.0 * xt));
xt += (1.54 / float(N)) * (1.0 + 0.7 * srnd(float(i)));
float dm = length(mouse-P), phim = dm, d = length(uv-P), phi = d - 0.1 * iTime;
Phi[i] = (2.0 * 3.14159 / 0.04) * (phi - phim); // stores wave attributes
D2[i] = pow(d,1.0);
if (d<0.01)
{
fragColor = vec4(0,0,1,0);
return;
}
}
// --- combines waves or energy
float v = 0.0;
for (int i=0; i<N; i++)
{
for (int j=0; j<N; j++)
v += cos(Phi[j]-Phi[i]) / (D2[i]*D2[j]);
}
v = sqrt(v/2.0);
v = v * 4.5 / float(N);
fragColor = v * vec4(1, 0.5, 0.25, 1);
}
https://github.com/TheMrCerebro/irrBM/releases
Bye
