Wrapping up

src/linalg/mat.cu

@@ -72,6 +72,14 @@ __device__ Vec3 computeGradient(float* volumeData, const int volW, const int vol
     float dfdz = (sampleVolumeTrilinear(volumeData, volW, volH, volD, fx, fy, fz + hz) -
                   sampleVolumeTrilinear(volumeData, volW, volH, volD, fx, fy, fz - hz)) / (2.0f * hz);
 
+    // // DEBUG (TODO: Delete) - Back to nearest
+    // float dfdx = (sampleVolumeNearest(volumeData, volW, volH, volD, (int)roundf(fx + 1), (int)roundf(fy), (int)roundf(fz)) -
+    //               sampleVolumeNearest(volumeData, volW, volH, volD, (int)roundf(fx - 1), (int)roundf(fy), (int)roundf(fz))) / (2.0f * hx);
+    // float dfdy = (sampleVolumeNearest(volumeData, volW, volH, volD, (int)roundf(fx), (int)roundf(fy + 1), (int)roundf(fz)) -
+    //               sampleVolumeNearest(volumeData, volW, volH, volD, (int)roundf(fx), (int)roundf(fy - 1), (int)roundf(fz))) / (2.0f * hy);
+    // float dfdz = (sampleVolumeNearest(volumeData, volW, volH, volD, (int)roundf(fx), (int)roundf(fy), (int)roundf(fz + 1))  -
+    //               sampleVolumeNearest(volumeData, volW, volH, volD, (int)roundf(fx), (int)roundf(fy), (int)roundf(fz - 1))) / (2.0f * hz);
+
     return Vec3::init(dfdx, dfdy, dfdz);
 };
 
@@ -84,7 +92,7 @@ __device__ unsigned int packUnorm4x8(float r, float g, float b, float a) {
 
   float len = sqrtf(r*r + g*g + b*b + a*a);
 
-  // This is a Vec4 but i can't be bothered to make that its own struct/class; FIXME: maybe do that if we need to?
+  // This is a Vec4 but i can't be bothered to make that its own struct/class; FIXME: maybe do that if we need to? From Martin: We could use a Vec4 for rgba too, but I don't feel like it either
   u.in[0] = round(r/len * 255.0f);
   u.in[1] = round(g/len * 255.0f);
   u.in[2] = round(b/len * 255.0f);