MeshSubmesh

RGBA, premultiplied. Multiplied with the sampled texel when a texture is bound.

Null when the material has no texture or the decoder failed.

Byte offset of the batchId section, or -1 when the primitive has no _BATCHID.

RR-cache refs resolved once by uploadMeshContent; per-frame drawable enqueue reads them direct — no HashMap.getNode. Cache still owns lifetime; post-eviction the GL handles invalidate and bindBuffer/bindTexture returns false.

Combined buffer: vertices | indices | batchIds. Bound to GL_ARRAY_BUFFER for the vertex attribs and (where elementBufferKey is null) to GL_ELEMENT_ARRAY_BUFFER for drawElements via BufferObject.bindBufferAs. Single mmap per primitive instead of three.

3 (RGB) or 4 (RGBA); 0 when absent.

Byte offset of per-vertex COLOR_0 in the interleaved buffer; -1 when absent.

Resolved dedicated index buffer (split path); null on the shared path, where the combined buffer doubles as the element buffer.

Separate index buffer key, non-null only on backends that forbid binding one buffer to two targets (WebGL — see earth.worldwind.util.kgl.Kgl.supportsSharedElementArrayBuffer). When null, indices live inside bufferKey's combined buffer at elementOffset.

Byte offset of the index section. Passed to glDrawElements as the indices argument. Into the combined buffer (shared path) or 0 into the dedicated elementBuffer (split).

glTF primitive mode (4=TRIANGLES, 1=LINES, 0=POINTS).

True iff every mandatory buffer (combined VBO + any split EBO) is still RR-cache- resident. Texture is optional — untextured photogrammetry tilesets use per-vertex COLOR_0 instead.