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dense particles

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micuat 2020-10-27 18:00:28 +01:00
parent 4d1349f720
commit ca0613b705
2 changed files with 17 additions and 9 deletions
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22
zoneb/bin/data/shaders/particles/update.frag
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@ -112,12 +112,18 @@ void main()
vec3 misc = texture(particles2, texCoordVarying.st).xyz; vec3 misc = texture(particles2, texCoordVarying.st).xyz;
vec4 target = texture(particles3, texCoordVarying.st).xyzw; vec4 target = texture(particles3, texCoordVarying.st).xyzw;
float thermo = texture2D(u_v4l2cam, texCoordVarying.st).r; float thermo = texture2D(u_v4l2cam, texCoordVarying.st/4).r;
float depth = texture(u_depth, texCoordVarying.st).x; vec2 subPix = mod(texCoordVarying.st / 4, 1.0);
vec4 ray = texture(u_world, texCoordVarying.st); float depth0 = texture(u_depth, texCoordVarying.st/4 - subPix).x;
float depth1 = texture(u_depth, texCoordVarying.st/4 - subPix + vec2(1, 1)).x;
vec4 ray0 = texture(u_world, texCoordVarying.st/4 - subPix);
vec4 ray1 = texture(u_world, texCoordVarying.st/4 - subPix + vec2(1, 1));
float vValid = (depth != 0 && ray.x != 0 && ray.y != 0) ? 1 : 0; float depth = mix(depth0, depth1, length(subPix));
vec4 ray = mix(ray0, ray1, length(subPix));
float vValid = (depth0 != 0 && depth1 != 0 && ray.x != 0 && ray.y != 0) ? 1 : 0;
vec4 posWorld = vec4(1); vec4 posWorld = vec4(1);
posWorld.z = -depth * 65535.0; // Remap to float range. posWorld.z = -depth * 65535.0; // Remap to float range.
@ -142,7 +148,7 @@ void main()
thermo = misc.x; thermo = misc.x;
} }
else { // wandering else { // wandering
age += 0.1; age += 0.02;
// age += 0.01; // age += 0.01;
thermo = misc.x; thermo = misc.x;
} }
@ -162,14 +168,16 @@ void main()
if(age < 0.001) { // targetting if(age < 0.001) { // targetting
target.w = 0; target.w = 0;
if(random3(pos).x > pow(length(texCoordVarying.st - uHottest0.st)/5,16*16)+0) { if(random3(pos).x > pow(length(texCoordVarying.st/4 - uHottest0.st)/5,16*16)+0) {
vec3 H = uHottest3d0; vec3 H = uHottest3d0;
H.x *= -1;
H.z *= -1; H.z *= -1;
target.xyz = H + random3(pos); target.xyz = H + random3(pos);
target.w = 1; target.w = 1;
} }
else if(random3(pos).x > pow(length(texCoordVarying.st - uHottest1.st)/5,16*16)+0) { else if(random3(pos).x > pow(length(texCoordVarying.st/4 - uHottest1.st)/5,16*16)+0) {
vec3 H = uHottest3d1; vec3 H = uHottest3d1;
H.x *= -1;
H.z *= -1; H.z *= -1;
target.xyz = H + random3(pos); target.xyz = H + random3(pos);
target.w = 1; target.w = 1;

4
zoneb/src/ofApp.cpp
View file

@ -69,8 +69,8 @@ void ofApp::setupThermal()
void ofApp::setupParticles() void ofApp::setupParticles()
{ {
// 1,000,000 particles // 1,000,000 particles
unsigned w = 512; unsigned w = 512*4;
unsigned h = 512; unsigned h = 512*4;
particles.init(w, h, OF_PRIMITIVE_POINTS, false, 4); particles.init(w, h, OF_PRIMITIVE_POINTS, false, 4);