// SPDX-License-Identifier: MIT
// SPDX-FileCopyrightText: 2026 Martino Ferrari

#pragma once
#include <plot/gl/api.hpp>

namespace plot::gl {

/// What the current context can do. Only OpenGL 3.3 core is required; every
/// field above that baseline is false when the driver does not offer it.
struct Caps {
  int major = 0;
  int minor = 0;
  /// GL_VERSION / GL_RENDERER / GL_VENDOR strings. They are owned by the
  /// context: valid until it is destroyed, and empty ("") when nothing has
  /// been probed yet.
  const char* renderer = "";
  const char* vendor = "";
  bool compute = false;         ///< GL 4.3+ (compute shaders)
  bool buffer_storage = false;  ///< GL 4.4+ or ARB_buffer_storage
  bool persistent_map = false;  ///< GL 4.4+ or ARB_buffer_storage
  bool core_profile = false;    ///< GL_CONTEXT_CORE_PROFILE_BIT
};

/// Capabilities of the context that is current on the calling thread, probed
/// once on the first successful query and cached afterwards. Safe to call
/// before load(): with no usable context (or no resolved entry points) every
/// field stays zero. `load()` invalidates the cache. The cache is
/// process-global and unsynchronised: probe from the thread that owns the
/// current context.
const Caps& caps() noexcept;

}  // namespace plot::gl