DepthOfField.h

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#pragma once
 
namespace eve::graphics {
 
class Canvas;
class Graphics;
class Shader;
class Texture;
 
class DepthOfField {
public:
    explicit DepthOfField(Graphics *gfx);
 
    Texture *apply(Texture *source, Texture *hwDepth, float focusDistance, float maxBlurPx,
                   float focusRange, float nearZ, float farZ);
 
private:
    void ensureTargets(int width, int height);
    void configure(float dirX, float dirY, float focusDistance, float maxBlurPx, float focusRange,
                   float nearZ, float farZ, int width, int height);
 
    Graphics *gfx_ = nullptr;
    Shader *shader_ = nullptr;
    Canvas *temp_ = nullptr;
    Canvas *output_ = nullptr;
    int width_ = 0;
    int height_ = 0;
};
 
}  // namespace eve::graphics