Smoke: expose empty space clipping property to the UI.

This is used to determine which voxels are to be considered empty space.

Previously it was hardcoded for converting dense grids to OpenVDB grids
to reduce disk space usage.

This value is also useful for rendering engines to know, i.e. to
optimize ray marching.

1 files changed, 10 insertions, 8 deletions

diff --git a/intern/openvdb/openvdb_capi.cc b/intern/openvdb/openvdb_capi.cc
index ef4f8c8820f..1c8b51a23c4 100644
--- a/intern/openvdb/openvdb_capi.cc
+++ b/intern/openvdb/openvdb_capi.cc
@@ -39,7 +39,7 @@ int OpenVDB_getVersionHex()
 OpenVDBFloatGrid *OpenVDB_export_grid_fl(
         OpenVDBWriter *writer,
         const char *name, float *data,
-        const int res[3], float matrix[4][4],
+		const int res[3], float matrix[4][4], const float clipping,
         OpenVDBFloatGrid *mask)
 {
 	Timer(__func__);
@@ -53,6 +53,7 @@ OpenVDBFloatGrid *OpenVDB_export_grid_fl(
 	        data,
 	        res,
 	        matrix,
+			clipping,
 	        mask_grid);
 
 	return reinterpret_cast<OpenVDBFloatGrid *>(grid);
@@ -61,7 +62,7 @@ OpenVDBFloatGrid *OpenVDB_export_grid_fl(
 OpenVDBIntGrid *OpenVDB_export_grid_ch(
         OpenVDBWriter *writer,
         const char *name, unsigned char *data,
-        const int res[3], float matrix[4][4],
+		const int res[3], float matrix[4][4], const float clipping,
         OpenVDBFloatGrid *mask)
 {
 	Timer(__func__);
@@ -76,17 +77,17 @@ OpenVDBIntGrid *OpenVDB_export_grid_ch(
 	        data,
 	        res,
 	        matrix,
+			clipping,
 	        mask_grid);
 
 	return reinterpret_cast<OpenVDBIntGrid *>(grid);
 }
 
-OpenVDBVectorGrid *OpenVDB_export_grid_vec(
-        struct OpenVDBWriter *writer,
-        const char *name,
-        const float *data_x, const float *data_y, const float *data_z,
-        const int res[3], float matrix[4][4], short vec_type,
-        const bool is_color, OpenVDBFloatGrid *mask)
+OpenVDBVectorGrid *OpenVDB_export_grid_vec(struct OpenVDBWriter *writer,
+		const char *name,
+		const float *data_x, const float *data_y, const float *data_z,
+		const int res[3], float matrix[4][4], short vec_type, const float clipping,
+		const bool is_color, OpenVDBFloatGrid *mask)
 {
 	Timer(__func__);
 
@@ -105,6 +106,7 @@ OpenVDBVectorGrid *OpenVDB_export_grid_vec(
 	        matrix,
 	        static_cast<VecType>(vec_type),
 	        is_color,
+			clipping,
 	        mask_grid);
 
 	return reinterpret_cast<OpenVDBVectorGrid *>(grid);