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partikkeli valot

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This commit is contained in:
Teemu Järvisalo
2025-07-31 20:11:54 +03:00
parent e00ae27d46
commit f9a8dc2b69
3 changed files with 136 additions and 106 deletions
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55
src/main.cpp
View File

@ -37,6 +37,31 @@ static int pidMain;
static int pidPost;
// static HDC hDC;
#define GRID 32
#define HEX_TEX_SIZE (GRID * GRID * 4) // RGBA: 4 floats per texel
#define SHAPES 16
#define SHAPES_TEX_SIZE (SHAPES * SHAPES * 4)
#define MAX_DISTANCE 100.f
#define PARTICLES 16
#define PARTICLES_TEX_SIZE (PARTICLES * PARTICLES * 4)
#define PARTICLES_DISTANCE 80.f
static float syncs[1 + SU_NUMSYNCS];
// FFT buffers
static float fft_input[FFT_SIZE];
static float fft_output[FFT_SIZE / 2]; // Magnitudes
static float fft_uniform[FFT_SIZE / 4];
static float particlesData[PARTICLES_TEX_SIZE];
static float particlesData2[PARTICLES * PARTICLES]; // additional value for particle distance
static float shapesData[SHAPES_TEX_SIZE];
static float hexGridData[HEX_TEX_SIZE];
#ifndef EDITOR_CONTROLS
#pragma code_seg(".main")
void entrypoint(void)
@ -118,14 +143,11 @@ int __cdecl main(int argc, char* argv[])
// Play sound
direct_sound_buffer->Play(0, 0, 0);
static float syncs[1 + SU_NUMSYNCS];
// Init FFT
init_hamming_window();
// FFT buffers
static float fft_input[FFT_SIZE];
static float fft_output[FFT_SIZE / 2]; // Magnitudes
static float fft_uniform[FFT_SIZE / 4];
@ -135,16 +157,7 @@ int __cdecl main(int argc, char* argv[])
float x, y, z;
};
#define GRID 32
#define HEX_TEX_SIZE (GRID * GRID * 4) // RGBA: 4 floats per texel
#define SHAPES 16
#define SHAPES_TEX_SIZE (SHAPES * SHAPES * 4)
#define MAX_DISTANCE 100.f
#define PARTICLES 16
#define PARTICLES_TEX_SIZE (PARTICLES * PARTICLES * 4)
#define PARTICLES_DISTANCE 80.f
PFNGLUNIFORM1FVPROC glUniform1fvProc = ((PFNGLUNIFORM1FVPROC)wglGetProcAddress("glUniform1fv"));
PFNGLACTIVETEXTUREPROC glActiveTexture = ((PFNGLACTIVETEXTUREPROC)wglGetProcAddress("glActiveTexture"));
@ -184,15 +197,14 @@ int __cdecl main(int argc, char* argv[])
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
static float shapesData[SHAPES_TEX_SIZE];
int currentShape = 0; // mark location which shape we are currently building
float shapeIncrement = 0.15f;
float shapeLastNote = 0.0f;
static float particlesData[PARTICLES_TEX_SIZE];
static float particlesData2[PARTICLES*PARTICLES]; // additional value for particle distance
int currentParticle = 0; // mark location which shape we are currently building
float particleIncrement = 1.0f;
float particleIncrement = 3.0f;
float particleLastNote = 0.0f;
do
@ -396,20 +408,13 @@ int __cdecl main(int argc, char* argv[])
//glUniform3fvProc(600, 1, flatShapes); // array of shapes
//glUniform3fvProc(700, 1, test); // test shape
glUniform1fvProc(0, SU_NUMSYNCS + 1, syncs);
glUniform1fvProc(20, FFT_SIZE / 4, fft_uniform);
//////////////////////////////////////////////////////
// Hex Grid Builder
//////////////////////////////////////////////////////
static float hexGridData[HEX_TEX_SIZE];
float gap = 0.3f;
float cellW = 1.6f + 0.2f; // flat-to-flat width

53
src/shaders/fragment.frag
View File

@ -172,9 +172,9 @@ vec2 mapScene(in vec3 p) {
}
}
*/
/*
float maxRadius = 40.; // Circle radius
float sphereRadius = 0.7;
float sphereRadius = 0.3;
int index = 0;
float gridSize3 = 16.;
@ -192,12 +192,6 @@ vec2 mapScene(in vec3 p) {
// Direction from center to initial circle position (in XY plane)
vec3 dir = normalize(vec3(cos(particleStartPos), 0.0, sin(particleStartPos))); // XZ direction
// Compute current radius: shrinking over time
//float r = particleDist;
//if(particleDist > maxRadius) {
// particleDist = maxRadius;
//}
float r = max(maxRadius - particleData.z, -maxRadius);
float offsetFactor = 15.;
@ -211,9 +205,7 @@ vec2 mapScene(in vec3 p) {
index++;
}
}
//res = opU(res, vec2(sdSphere(p - vec3(.0, 4., .0), 1.0), .1));
*/
return res;
}
@ -422,6 +414,45 @@ vec3 shading(vec3 v, vec3 n, vec3 dir, float material) {
}
*/
// LIGHTS WITH PARTICLES
float maxRadius = 40.; // Circle radius
float sphereRadius = 0.7;
int index = 0;
float particleHeight = 4.;
float gridSize3 = 16.;
for(float j = 0; j < gridSize3; j++) {
for(float i = 0; i < gridSize3; i++) {
vec2 texCoord = (vec2(i, j) + 0.5) / float(gridSize3);
vec4 particleData = texture(u_ParticlesTex, texCoord); // RGBA: x, y, distance, active
float particleActive = particleData.a;
if(particleData.z < 0.5) continue;
// Map param to angle
float particleStartPos = hash(vec2(j, i)) * 2.0 * PI;
// Direction from center to initial circle position (in XY plane)
vec3 dir = normalize(vec3(cos(particleStartPos), 0.0, sin(particleStartPos))); // XZ direction
float r = max(maxRadius - particleData.z, -maxRadius);
float offsetFactor = 15.;
vec3 particleOffset = vec3(hash(vec2(i, j)) * offsetFactor , particleHeight, hash(vec2(j, i)) * offsetFactor); // particle offset
// Final object position = center (offset) + radial movement
vec3 center = particleOffset; // Circle center
vec3 objPos = center + dir * r; // Object slides inward
//res = opU(res, vec2(sdSphere(p - objPos, sphereRadius), 1.));
lights += addPointLight(objPos, palette(i + j), 3.0, v, dir, n, shininess);
//lights += addPointLightNoShadow(objPos, palette(i + j), 10. , 20. ,v, dir, n, shininess);
index++;
}
}
vec3 lightDir = vec3(0., 1., -3);
//float sun_dif = clamp(dot(n, lightDir), 0., 1.);
//float shadow = softshadow(v + n * 0.01, lightDir, .01, 30., 18.);

134
src/shaders/fragment.inl
View File

@ -23,118 +23,112 @@ const char *fragment_frag =
"{"
"return fract(sin(dot(v,vec2(127.1,311.7)))*43758.5453123);"
"}"
"vec2 t(vec2 f,vec2 i)"
"{"
"return f.x<i.x?"
"f:"
"i;"
"}"
"vec2 t(vec3 v)"
"{"
"vec2 f=vec2(v.y,0);"
"int i=0;"
"for(float l=0;l<16.;l++)"
"for(float m=0;m<16.;m++)"
"{"
"vec2 n=(vec2(m,l)+.5)/float(16.);"
"vec4 g=texture(d,n);"
"if(g.z<.5)"
"continue;"
"float y=t(vec2(l,m))*2.*acos(-1.);"
"vec3 x=vec3(t(vec2(m,l))*15.,4,t(vec2(l,m))*15.);"
"f=t(f,vec2(length(v-x-normalize(vec3(cos(y),0,sin(y)))*max(40.-g.z,-40.))-.7,1));"
"i++;"
"}"
"return f;"
"return vec2(v.y,0);"
"}"
"vec3 t(vec3 v,vec3 f,inout vec3 i)"
"vec3 t(vec3 v,vec3 x,inout vec3 f)"
"{"
"float l=0.,m=0.,y=0.;"
"float i=0.,e=0.,y=0.;"
"for(int n=0;n<30;n++)"
"{"
"i=v+f*l;"
"vec2 g=t(i);"
"l+=g.x;"
"m=g.y;"
"if(l>6e2)"
"f=v+x*i;"
"vec2 m=t(f);"
"i+=m.x;"
"e=m.y;"
"if(i>6e2)"
"break;"
"if(g.x<.001*l)"
"if(m.x<.001*i)"
"{"
"y=1.;"
"break;"
"}"
"}"
"return vec3(l,m,y);"
"return vec3(i,e,y);"
"}"
"float t(vec3 v,vec3 f,float i)"
"float t(vec3 v,vec3 i,float f)"
"{"
"float l=1.,m=.02;"
"float m=1.,y=.02;"
"for(int n=0;n<6;n++)"
"{"
"if(m>i)"
"if(y>f)"
"break;"
"float g=t(v+m*f).x;"
"l=min(l,g/(4.*m));"
"m+=clamp(g,.1,.8);"
"if(l<-1.)"
"float d=t(v+y*i).x;"
"m=min(m,d/(4.*y));"
"y+=clamp(d,.1,.8);"
"if(m<-1.)"
"break;"
"}"
"l=max(l,-1.);"
"return.25*(1.+l)*(1.+l)*(2.-l);"
"m=max(m,-1.);"
"return.25*(1.+m)*(1.+m)*(2.-m);"
"}"
"vec3 x(vec3 v)"
"{"
"vec2 f=vec2(.01,0);"
"return normalize(vec3(t(v+f.xyy).x-t(v-f.xyy).x,t(v+f.yxy).x-t(v-f.yxy).x,t(v+f.yyx).x-t(v-f.yyx).x));"
"vec2 m=vec2(.01,0);"
"return normalize(vec3(t(v+m.xyy).x-t(v-m.xyy).x,t(v+m.yxy).x-t(v-m.yxy).x,t(v+m.yyx).x-t(v-m.yyx).x));"
"}"
"vec3 t(vec3 v,vec3 l,vec3 f,vec3 m,float i)"
"vec3 t(vec3 v,vec3 m,float i,vec3 d,vec3 f,vec3 x,float y)"
"{"
"vec3 g=vec3(.77,.26,.73);"
"v-=l;"
"v-=d;"
"float n=length(v);"
"v=normalize(v);"
"float x=30./(1.+.09*n+.032*n*n),y=max(dot(m,v),0.);"
"i/=1.+.09*n+.032*n*n;"
"float g=max(dot(x,v),0.);"
"f=normalize(v-f);"
"vec3 e=vec3(.04);"
"e+=(1.-e)*pow(clamp(1.-max(dot(f,v),0.),0.,1.),5.);"
"n=t(l+m*.01,v,n);"
"return(g*y*x+g*pow(max(dot(m,f),0.),mix(128.,8.,i))*x*e)*n;"
"n=t(d+x*.01,v,n);"
"return(m*g*i+m*pow(max(dot(x,f),0.),mix(128.,8.,y))*i*e)*n;"
"}"
"vec3 t(vec3 v,vec3 f,vec3 m,float l)"
"vec3 t(vec3 v,vec3 f,vec3 i,float m)"
"{"
"float i=.01;"
"float y=.01;"
"vec3 n=vec3(0);"
"if(l==0.)"
"n=vec3(.8314,.2941,.2941),i=.1;"
"else if(l==1.)"
"n=vec3(.6196,.6118,.6118),i=.7;"
"else if(l==2.)"
"n=vec3(.3255,.4784,.3255),i=.2;"
"else if(l==3.)"
"n=vec3(.2471,.3059,.6314),i=1.;"
"else if(l==4.)"
"n=vec3(.9961,1,.9922),i=.1;"
"else if(l==5.)"
"n=vec3(.9961,1,.9922),i=.3;"
"v=vec3(0)+t(vec3(0,40,-10),v,m,f,i)+t(vec3(0,20,15),v,m,f,i)+vec3(.08,.62,.75)*clamp(dot(f,normalize(vec3(0,1,-3)*vec3(0,-1,-2))),0.,1.)*.8;"
"return n*max(vec3(0),v);"
"if(m==0.)"
"n=vec3(.8314,.2941,.2941),y=.1;"
"else if(m==1.)"
"n=vec3(.6196,.6118,.6118),y=.7;"
"else if(m==2.)"
"n=vec3(.3255,.4784,.3255),y=.2;"
"else if(m==3.)"
"n=vec3(.2471,.3059,.6314),y=1.;"
"else if(m==4.)"
"n=vec3(.9961,1,.9922),y=.1;"
"else if(m==5.)"
"n=vec3(.9961,1,.9922),y=.3;"
"vec3 e=vec3(0)+t(vec3(0,40,-10),vec3(.77,.26,.73),30.,v,i,f,y)+t(vec3(0,20,15),vec3(.77,.26,.73),30.,v,i,f,y);"
"int g=0;"
"for(float m=0;m<16.;m++)"
"for(float i=0;i<16.;i++)"
"{"
"vec2 n=(vec2(i,m)+.5)/float(16.);"
"vec4 x=texture(d,n);"
"if(x.z<.5)"
"continue;"
"float s=t(vec2(m,i))*2.*acos(-1.);"
"vec3 c=normalize(vec3(cos(s),0,sin(s))),l=vec3(t(vec2(i,m))*15.,4,t(vec2(m,i))*15.);"
"e+=t(l+c*max(40.-x.z,-40.),vec3(.46,.2,.94)+vec3(.66,.64,.77)*cos(6.28318*(vec3(.91,.62,.97)*(i+m)+vec3(.26,.2,.84))),3.,v,c,f,y);"
"g++;"
"}"
"e+=vec3(.08,.62,.75)*clamp(dot(f,normalize(vec3(0,1,-3)*vec3(0,-1,-2))),0.,1.)*.8;"
"return n*max(vec3(0),e);"
"}"
"vec3 t(vec2 f,vec3 v)"
"vec3 t(vec2 m,vec3 v)"
"{"
"v=normalize(vec3(0,10,0)-v);"
"vec3 i=normalize(cross(vec3(0,1,0),v));"
"return normalize(v+f.x*i+f.y*cross(v,i));"
"vec3 y=normalize(cross(vec3(0,1,0),v));"
"return normalize(v+m.x*y+m.y*cross(v,y));"
"}"
"vec3 x(vec2 v)"
"{"
"vec3 f=vec3(-10,20,-20),l=t(v,f),i=vec3(0),n=vec3(0);"
"f=t(f,l,n);"
"vec3 f=vec3(-10,20,-20),y=t(v,f),i=vec3(0),n=vec3(0);"
"f=t(f,y,n);"
"if(f.x>0.)"
"{"
"vec3 v=x(n);"
"i=t(n,v,l,f.y);"
"i=t(n,v,y,f.y);"
"}"
"return i*exp(-f.x*.01)+mix(i,mix(vec3(.2667,.2941,.3451),vec3(.302,.3176,.3725),pow(max(dot(l,vec3(0,-.5,1.8)),0.),clamp(m[1]+m[2]+m[3],0.,1.)*5.)),1.-exp(-f.x*.01))*(1.-exp(-f.x*.01));"
"return i*exp(-f.x*.01)+mix(i,mix(vec3(.2667,.2941,.3451),vec3(.302,.3176,.3725),pow(max(dot(y,vec3(0,-.5,1.8)),0.),clamp(m[1]+m[2]+m[3],0.,1.)*5.)),1.-exp(-f.x*.01))*(1.-exp(-f.x*.01));"
"}"
"void main()"
"{"