full_screen_effect.h

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#ifndef H_OGF_RENDERER_CONTEXT_FULL_SCREEN_EFFECT_H
#define H_OGF_RENDERER_CONTEXT_FULL_SCREEN_EFFECT_H
 
#include <geogram_gfx/basic/common.h>
#include <geogram_gfx/basic/GLSL.h>
#include <geogram_gfx/basic/frame_buffer_object.h>
#include <geogram/basic/counted.h>
 
namespace GEO {
 
    class GEOGRAM_GFX_API FullScreenEffectImpl :
        public Counted, public GLSL::PseudoFileProvider {
    public:
        FullScreenEffectImpl();
 
        ~FullScreenEffectImpl() override;
 
 
        virtual double required_GLSL_version() const;
 
        virtual void pre_render(index_t width, index_t height);
 
        virtual void post_render();
 
        virtual void update();
 
        index_t width() const {
            return width_;
        }
 
        index_t height() const {
            return height_;
        }
 
        bool OK() const {
            return OK_;
        }
 
        virtual void get_vertex_shader_preamble_pseudo_file(
            std::vector<GLSL::Source>& sources
        );
 
        virtual void get_fragment_shader_preamble_pseudo_file(
            std::vector<GLSL::Source>& sources
        );
 
    protected:
 
        virtual void initialize(index_t w, index_t h);
 
        virtual void resize(index_t w, index_t h);
 
        void reset_alpha();
 
    private:
        bool initialized_;
        bool OK_;
        index_t width_;
        index_t height_;
 
    protected:
        FrameBufferObject draw_FBO_;
        bool ES_profile_;
    };
 
    typedef SmartPointer<FullScreenEffectImpl> FullScreenEffectImpl_var;
 
}
 
#endif