X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=simgear%2Fio%2Fsg_binobj.cxx;h=54f3b8debf5c3d7ec00f13b93f6e14b5b7f3874b;hb=bc9b3f6ff1fcc5caa67c07ad99f971c0faacf91a;hp=7a58321f14d827a72ffff0def645c84ee78861ca;hpb=db509f4075c956a90773916b78e15c05cca8d89e;p=simgear.git

diff --git a/simgear/io/sg_binobj.cxx b/simgear/io/sg_binobj.cxx
index 7a58321f..54f3b8de 100644
--- a/simgear/io/sg_binobj.cxx
+++ b/simgear/io/sg_binobj.cxx
@@ -261,13 +261,13 @@ void write_indices(gzFile fp, unsigned char indexMask,
     for (unsigned int i=0; i < count; ++i) {
         write_indice(fp, static_cast<T>(vertices[i]));
         
-        if (!normals.empty()) {
+        if (indexMask & SG_IDX_NORMALS) {
             write_indice(fp, static_cast<T>(normals[i]));
         }
-        if (!colors.empty()) {
+        if (indexMask & SG_IDX_COLORS) {
             write_indice(fp, static_cast<T>(colors[i]));
         }
-        if (!texCoords.empty()) {
+        if (indexMask & SG_IDX_TEXCOORDS) {
             write_indice(fp, static_cast<T>(texCoords[i]));
         }
     }
@@ -667,6 +667,8 @@ void SGBinObject::write_objects(gzFile fp, int type, const group_list& verts,
     
     unsigned int start = 0, end = 1;
     string m;
+    int_list emptyList;
+    
     while (start < materials.size()) {
         m = materials[start];
     // find range of objects with identical material, write out as a single object
@@ -692,10 +694,15 @@ void SGBinObject::write_objects(gzFile fp, int type, const group_list& verts,
 //        cout << "material:" << m << ", count =" << count << endl;
     // elements
         for (unsigned int i=start; i < end; ++i) {
+            const int_list& va(verts[i]);
+            const int_list& na((idx_mask & SG_IDX_NORMALS) ? normals[i] : emptyList);
+            const int_list& ca((idx_mask & SG_IDX_COLORS) ? colors[i] : emptyList);
+            const int_list& tca((idx_mask & SG_IDX_TEXCOORDS) ? texCoords[i] : emptyList);
+            
             if (version == 7) {
-                write_indices<uint16_t>(fp, idx_mask, verts[i], normals[i], colors[i], texCoords[i]);
+                write_indices<uint16_t>(fp, idx_mask, va, na, ca, tca);
             } else {
-                write_indices<uint32_t>(fp, idx_mask, verts[i], normals[i], colors[i], texCoords[i]);
+                write_indices<uint32_t>(fp, idx_mask, va, na, ca, tca);
             }
         }
     
@@ -745,7 +752,9 @@ bool SGBinObject::write_bin_file(const SGPath& file)
     cout << "tex coords = " << texcoords.size() << endl;
 
     version = 10;
-    if (wgs84_nodes.size() < 0xffff) {
+    if ((wgs84_nodes.size() < 0xffff) &&
+        (normals.size() < 0xffff) &&
+        (texcoords.size() < 0xffff)) {
         version = 7; // use smaller indices if possible
     }