GaussianBlur.hpp

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#ifndef GALAXY_GRAPHICS_POST_GAUSSIANBLUR_HPP_
#define GALAXY_GRAPHICS_POST_GAUSSIANBLUR_HPP_
 
#include "galaxy/graphics/gl/Shader.hpp"
#include "galaxy/graphics/PostEffect.hpp"
#include "galaxy/graphics/RenderTexture.hpp"
 
namespace galaxy
{
    namespace graphics
    {
        class GaussianBlur final : public PostEffect
        {
        public:
            enum class Strength : int
            {
                LOW = 0,
 
                NORMAL = 1,
 
                STRONG = 2
            };
 
            GaussianBlur(const int width, const int height);
 
            virtual ~GaussianBlur() = default;
 
            void resize(const int width, const int height) override;
 
            [[nodiscard]]
            unsigned int render(const unsigned int input) override;
 
            void set_strength(const Strength strength);
 
            [[nodiscard]]
            bool is_enabled() override;
 
        private:
            GaussianBlur() = delete;
 
        private:
            Shader m_shader;
 
            RenderTexture m_horizontal;
 
            RenderTexture m_vertical;
 
            Strength m_strength;
        };
    } // namespace graphics
} // namespace galaxy
 
#endif