viz.OPT_FLATTEN_STATIC_TRANSFORMS

Flatten Static Transform nodes by applying their transform to the geometry on the leaves of the scene graph, then removing the now redundant transforms. Static transformed Subgraphs that have multiple parental paths above them are not flattened, if you require this then the subgraphs have to be duplicated - for this use viz.OPT_FLATTEN_STATIC_TRANSFORMS_DUPLICATING_SHARED_SUBGRAPHS.

viz.OPT_REMOVE_REDUNDANT_NODES

Remove rendundant nodes, such as groups with one single child.

viz.OPT_REMOVE_LOADED_PROXY_NODES

Remove loaded proxy nodes.

viz.OPT_COMBINE_ADJACENT_LODS

Optimize the LOD groups, by combining adjacent LOD's which have complementary ranges.

viz.OPT_SHARE_DUPLICATE_STATE

Optimize State in the scene graph by removing duplicate state, replacing it with shared instances, both for StateAttributes, and whole StateSets.

viz.OPT_MERGE_GEOMETRY

viz.OPT_CHECK_GEOMETRY

viz.OPT_MAKE_FAST_GEOMETRY

viz.OPT_SPATIALIZE_GROUPS

Spatialize scene into a balanced quad/oct tree.

viz.OPT_COPY_SHARED_NODES

Copy any shared subgraphs, enabling flattening of static transforms.

viz.OPT_TRISTRIP_GEOMETRY

Convert Geometry surface primitives into tri strips.

viz.OPT_TESSELLATE_GEOMETRY

Tessellate all geodes, to remove POLYGONS.

viz.OPT_OPTIMIZE_TEXTURE_SETTINGS

Optimize textures by freeing image data.

viz.OPT_MERGE_GEODES

Combine geodes.

viz.OPT_FLATTEN_BILLBOARDS

Flatten MatrixTransform/Billboard pairs.

viz.OPT_TEXTURE_ATLAS_BUILDER

Optimize texture usage in the scene graph by combining textures into texture atlas. Use of texture atlas cuts down on the number of separate states in the scene, reducing state changes and improving the chances of use larger batches of geomertry.

viz.OPT_STATIC_OBJECT_DETECTION

Optimize the setting of StateSet and Geometry objects in scene so that they have a STATIC DataVariance when they don't have any callbacks associated with them.

viz.OPT_FLATTEN_STATIC_TRANSFORMS_DUPLICATING_SHARED_SUBGRAPHS

Similar to viz.OPT_FLATTEN_STATIC_TRANSFORMS in that is desgined to remove static transforms from the scene graph, pushing down the transforms to the geometry leaves of the scene graph, but with the difference that any subgraphs that are shared between different transforms of duplicated and flatten individually. This results in more static transforms being removed, but also means that more data is generated, and as a result may not always be the most appropriate flatten visitor to use.

viz.OPT_INDEX_MESH

Convert geometry that uses DrawArrays to DrawElements i.e., construct a real mesh. This removes duplicate vertices.

viz.OPT_VERTEX_POSTTRANSFORM

Optimize the triangle order in a mesh for best use of the GPU's post-transform cache.

viz.OPT_VERTEX_PRETRANSFORM

Optimize the use of the GPU pre-transform cache by arranging vertex attributes in the order they are used.

viz.OPT_ALL

A combination of all optimization flags.

viz.OPT_DEFAULT

A combination of the following flag:

viz.OPT_FLATTEN_STATIC_TRANSFORMS
viz.OPT_REMOVE_REDUNDANT_NODES
viz.OPT_REMOVE_LOADED_PROXY_NODES
viz.OPT_COMBINE_ADJACENT_LODS
viz.OPT_SHARE_DUPLICATE_STATE
viz.OPT_MERGE_GEOMETRY
viz.OPT_MAKE_FAST_GEOMETRY
viz.OPT_CHECK_GEOMETRY
viz.OPT_OPTIMIZE_TEXTURE_SETTINGS
viz.OPT_STATIC_OBJECT_DETECTION