remove unused

models/csrc/volumerendering.cu

@@ -100,7 +100,7 @@ __global__ void composite_train_bw_kernel(
  int samples = 0;
  scalar_t R = rgb[ray_idx][0], G = rgb[ray_idx][1], B = rgb[ray_idx][2];
  scalar_t O = opacity[ray_idx], D = depth[ray_idx];
- scalar_t T = 1.0f, r = 0.0f, g = 0.0f, b = 0.0f, op = 0.0f, d = 0.0f;
+ scalar_t T = 1.0f, r = 0.0f, g = 0.0f, b = 0.0f, d = 0.0f;
 
  while (samples < N_samples) {
  const int s = start_idx + samples;
@@ -109,7 +109,6 @@ __global__ void composite_train_bw_kernel(
 
  r += w*rgbs[s][0]; g += w*rgbs[s][1]; b += w*rgbs[s][2];
  d += w*ts[s];
- op += w;
  T *= 1.0f-a;
 
  // compute gradients by math...