Sha256: 06e0fb8abf6c805eb1343e4febe518ae00577693d9556c3b46a432d2cb1cdf5a
Contents?: true
Size: 1.94 KB
Versions: 6
Compression:
Stored size: 1.94 KB
Contents
package org.sunflow.core;
import org.sunflow.image.Color;
public class ShadingCache {
private Sample first;
private int depth;
// stats
long hits;
long misses;
long sumDepth;
long numCaches;
private static class Sample {
Instance i;
Shader s;
float nx, ny, nz;
float dx, dy, dz;
Color c;
Sample next; // linked list
}
public ShadingCache() {
reset();
hits = 0;
misses = 0;
}
public void reset() {
sumDepth += depth;
if (depth > 0) {
numCaches++;
}
first = null;
depth = 0;
}
public Color lookup(ShadingState state, Shader shader) {
if (state.getNormal() == null) {
return null;
}
// search further
for (Sample s = first; s != null; s = s.next) {
if (s.i != state.getInstance()) {
continue;
}
if (s.s != shader) {
continue;
}
if (state.getRay().dot(s.dx, s.dy, s.dz) < 0.999f) {
continue;
}
if (state.getNormal().dot(s.nx, s.ny, s.nz) < 0.99f) {
continue;
}
// we have a match
hits++;
return s.c;
}
misses++;
return null;
}
public void add(ShadingState state, Shader shader, Color c) {
if (state.getNormal() == null) {
return;
}
depth++;
Sample s = new Sample();
s.i = state.getInstance();
s.s = shader;
s.c = c;
s.dx = state.getRay().dx;
s.dy = state.getRay().dy;
s.dz = state.getRay().dz;
s.nx = state.getNormal().x;
s.ny = state.getNormal().y;
s.nz = state.getNormal().z;
s.next = first;
first = s;
}
}
Version data entries
6 entries across 6 versions & 1 rubygems