added vertex divisor default value

include/ACGL/OpenGL/Objects/ArrayBuffer.hh

@@ -78,7 +78,7 @@ public:
         GLint       size;       // #elements per attribute, size in bytes would be: size*sizeof(type)
         GLuint      offset;     // offset in bytes into the array
         GLboolean   normalized; // int types can get normalzed to 0..1 / -1..1 by GL, useful e.g. for colors
-        GLuint      divisor;    // vertex divisor for instancing, supported since OpenGL 3.3
+        GLuint      divisor;    // vertex divisor for instancing, supported since OpenGL 3.3. Default is 0 (== off)
     };
 
     // ===================================================================================================== \/

src/ACGL/OpenGL/Controller/GeometryDataControlFileATB.cc

@@ -156,7 +156,7 @@ bool GeometryDataControlFileATB::load(SharedGeometryData& _geometry) const
         std::memcpy(data, &dataVector[0], dataVector.size() * sizeof(GLfloat));
 
         // Name the attribute according to the filename
-        ArrayBuffer::Attribute attr = { mAttributeName, GL_FLOAT, attributeDimension, 0, GL_FALSE };
+        ArrayBuffer::Attribute attr = { mAttributeName, GL_FLOAT, attributeDimension, 0, GL_FALSE, 0 };
         _geometry->mAttributes.push_back(attr);
 
         // Tell the _geometry object where it finds the data

src/ACGL/OpenGL/Controller/GeometryDataControlFileOBJ.cc

@@ -279,18 +279,18 @@ bool GeometryDataControlFileOBJ::load(SharedGeometryData& geometry) const
     geometry->setData( (GLubyte*)data );
     geometry->setStrideSize( components * sizeof(float) );
 
-    ArrayBuffer::Attribute apos  = { "aPosition", GL_FLOAT, 4, 0,               GL_FALSE };
+    ArrayBuffer::Attribute apos  = { "aPosition", GL_FLOAT, 4, 0,               GL_FALSE, 0 };
     geometry->mAttributes.push_back( apos );
 
     if (hasNormals) {
-        ArrayBuffer::Attribute anorm = { "aNormal",   GL_FLOAT, 3, 4*sizeof(float), GL_FALSE };
+        ArrayBuffer::Attribute anorm = { "aNormal",   GL_FLOAT, 3, 4*sizeof(float), GL_FALSE, 0 };
         geometry->mAttributes.push_back( anorm );
     }
 
     if (texCoordDimension > 0) {
         int offset = (hasNormals?7:4);
         offset *= sizeof(float);
-        ArrayBuffer::Attribute atex  = { "aTexCoord", GL_FLOAT, texCoordDimension, offset, GL_FALSE };
+        ArrayBuffer::Attribute atex  = { "aTexCoord", GL_FLOAT, texCoordDimension, offset, GL_FALSE, 0 };
         geometry->mAttributes.push_back( atex );
     }