renderPassDofBlur.h

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// SPDX-License-Identifier: Apache-2.0
// Copyright 2025-2026 Arnis Lektauers
//
//
#pragma once
 
#include <vector>
 
#include "renderPassShaderQuad.h"
 
namespace visutwin::canvas
{
    class RenderPassDofBlur : public RenderPassShaderQuad
    {
    public:
        RenderPassDofBlur(const std::shared_ptr<GraphicsDevice>& device, Texture* nearTexture, Texture* farTexture, Texture* cocTexture);
 
        float blurRadiusNear = 1.0f;
        float blurRadiusFar = 1.0f;
 
        void setBlurRings(int value);
        int blurRings() const { return _blurRings; }
 
        void setBlurRingPoints(int value);
        int blurRingPoints() const { return _blurRingPoints; }
 
        void execute() override;
 
    private:
        void rebuildKernel();
 
        Texture* _nearTexture = nullptr;
        Texture* _farTexture = nullptr;
        Texture* _cocTexture = nullptr;
        int _blurRings = 3;
        int _blurRingPoints = 3;
        std::vector<float> _kernel;
    };
}