unsharp_masking.h

Go to the documentation of this file.

/*
 *  Copyright (c) 2000-2022 Inria
 *  All rights reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions are met:
 *
 *  * Redistributions of source code must retain the above copyright notice,
 *  this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright notice,
 *  this list of conditions and the following disclaimer in the documentation
 *  and/or other materials provided with the distribution.
 *  * Neither the name of the ALICE Project-Team nor the names of its
 *  contributors may be used to endorse or promote products derived from this
 *  software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 *  POSSIBILITY OF SUCH DAMAGE.
 *
 *  Contact: Bruno Levy
 *
 *     https://www.inria.fr/fr/bruno-levy
 *
 *     Inria,
 *     Domaine de Voluceau,
 *     78150 Le Chesnay - Rocquencourt
 *     FRANCE
 *
 */
 
#ifndef H_OGF_RENDERER_GL_CONTEXT_UNSHARP_MASKING_GLSL_H
#define H_OGF_RENDERER_GL_CONTEXT_UNSHARP_MASKING_GLSL_H
 
#include <geogram_gfx/basic/common.h>
#include <geogram_gfx/full_screen_effects/full_screen_effect.h>
#include <geogram_gfx/basic/frame_buffer_object.h>
 
namespace GEO {
 
    class GEOGRAM_GFX_API UnsharpMaskingImpl : public FullScreenEffectImpl {
    public:
        UnsharpMaskingImpl();
 
        ~UnsharpMaskingImpl() override;
 
        double required_GLSL_version() const override;
 
        void pre_render(index_t w, index_t h) override;
 
        void post_render() override;
 
        void update() override;
 
        index_t get_intensity() const {
            return intensity_;
        }
 
        void set_intensity(index_t x) {
            intensity_ = x;
        }
 
        index_t get_contrast() const {
            return contrast_;
        }
 
        void set_contrast(index_t x) {
            contrast_ = x;
        }
 
        index_t get_blur_width() const {
            return blur_width_;
        }
 
        void set_blur_width(index_t x) {
            blur_width_ = x;
        }
 
        bool get_halos() const {
            return halos_;
        }
 
        void set_halos(bool x) {
            halos_ = x;
        }
 
        bool get_positive_shadows() const {
            return positive_shadows_;
        }
 
        void set_positive_shadows(bool x) {
            positive_shadows_ = x;
        }
 
    protected:
        void initialize(index_t w, index_t h) override;
 
        void resize(index_t width, index_t height) override;
 
        void blur();
 
        void display_final_texture();
 
    private:
        index_t intensity_;
        index_t contrast_;
        index_t blur_width_;
        bool halos_;
        bool positive_shadows_;
 
        FrameBufferObject blur_1_;
        FrameBufferObject blur_2_;
 
        GLuint unsharp_masking_program_;
        GLuint blur_program_;
    } ;
 
    typedef SmartPointer<UnsharpMaskingImpl> UnsharpMaskingImpl_var ;
 
}
 
#endif