missing cudaGetLastError

Summary: Investigating a reported problem.

Reviewed By: MichaelRamamonjisoa

Differential Revision: D50791296

fbshipit-source-id: 8dc162b87d02debf05d16c2b4816fcd57234d7e0

pytorch3d/csrc/pulsar/include/renderer.forward.device.h

@@ -102,6 +102,7 @@ void forward(
       self->workspace_d,
       self->workspace_size,
       stream);
+  CHECKLAUNCH();
   SORT_ASCENDING_WS(
       self->min_depth_d,
       self->min_depth_sorted_d,
@@ -111,6 +112,7 @@ void forward(
       self->workspace_d,
       self->workspace_size,
       stream);
+  CHECKLAUNCH();
   SORT_ASCENDING_WS(
       self->min_depth_d,
       self->min_depth_sorted_d,