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/// A skyquad is like a skybox but with a single quad.
#pragma once
typedef struct GfxCore GfxCore;
typedef struct Scene Scene;
typedef struct SceneNode SceneNode;
typedef struct SceneObject SceneObject;
typedef struct Texture Texture;
/// Create a skyquad.
SceneObject* gfx_make_skyquad(GfxCore*, const Texture*);
/// Set up a skyquad in the scene.
///
/// This function adds two scene nodes under the given root node:
/// - An object node to render the skyquad in the background.
/// - A light node to light up other objects with the skyquad.
///
/// Return the light node under which objects affected by the light can be
/// rooted.
SceneNode* gfx_setup_skyquad(
GfxCore*, SceneNode* root, const Texture* environment_map);
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