namespace AcDream.App.Rendering.Wb;

/// <summary>
/// Tracks currently-bound GL state to skip redundant rebinds across the
/// WB-derived render path. Previously these were static fields on
/// <c>BaseObjectRenderManager</c> in the WorldBuilder.Shared project; inlined
/// here in Phase O-T7 to eliminate the WorldBuilder project reference.
///
/// Semantics are identical to the WB originals:
///   <c>CurrentAtlas</c>  — slot index of the currently bound texture atlas.
///   <c>CurrentVAO</c>    — OpenGL name of the currently bound vertex array object.
///   <c>CurrentIBO</c>    — OpenGL name of the currently bound index buffer object.
/// Sentinel value 0 means "no valid binding cached."
/// </summary>
/// <remarks>
/// All accesses must occur on the render thread. GL state binding is
/// not thread-safe; these sentinels are written immediately after the
/// corresponding glBind* call and read by the next dispatch on the
/// same thread.
/// </remarks>
public static class RenderStateCache
{
    public static uint CurrentAtlas = 0;
    public static uint CurrentVAO   = 0;
    public static uint CurrentIBO   = 0;
}