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#ifndef SKY_MODEL_H
#define SKY_MODEL_H
#include "../shader.h"
#include "../types.h"
struct WebglContext;
/// A full-screen sky background. Renders a mid-afternoon gradient (from the
/// water horizon up to the top of the screen) and sparse, wispy procedural
/// clouds that shrink toward the horizon. Standalone: owns its own shader and
/// a two-triangle full-screen quad, drawn before the sun and water.
class SkyModel {
public:
SkyModel();
~SkyModel();
void load(WebglContext* context);
void update(f32 dtSeconds);
void render();
void unload();
/// Screen-space y (0..1) of the water horizon, where the gradient starts.
f32 horizon = 0.5f;
private:
WebglContext* context = nullptr;
Shader shader = 0;
u32 vao = 0;
u32 vbo = 0;
f32 elapsedTime = 0.f;
struct {
i32 position = -1;
} attributes;
struct {
i32 time = -1;
i32 horizon = -1;
} uniforms;
};
#endif // SKY_MODEL_H
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