Every vertex array, vertex and index buffer, attribute pointer, instance divisor, stream
upload and draw call now goes through gpu_mesh_* / gpu_buffer_* / gpu_draw_*, and no other
file in the package names them. A Mesh records its layout as it is built - which buffer
feeds which attribute at what stride and offset, per vertex or per instance - so a backend
that bakes vertex input into a pipeline can read it back. On OpenGL each call is the GL it
replaces, in the same order: the five fixed viewpoints render bit-identically and the game's
self-tests report exactly what they did before.
scatter_attach takes the mesh rather than its vertex array; a mesh now frees every vertex
buffer it owns (glTF meshes used to keep all but the first); the two helpers nothing called,
mesh_grid_patches and mesh_instance_buffer, are gone.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Orkuncakilkaya
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