StarfieldMaterial.h

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// Copyright © 2008-2021 Pioneer Developers. See AUTHORS.txt for details
// Licensed under the terms of the GPL v3. See licenses/GPL-3.txt
 
#ifndef _OGL_STARFIELD_MATERIAL_H
#define _OGL_STARFIELD_MATERIAL_H
/*
 * Starfield material.
 * This does nothing very special except toggle POINT_SIZE
 * The Program requires setting intensity using the generic emission parameter
 */
#include "OpenGLLibs.h"
#include "Program.h"
#include "graphics/Material.h"
 
namespace Graphics {
    namespace OGL {
        class StarfieldMaterial : public Material {
        public:
            virtual Program *CreateProgram(const MaterialDescriptor &) override
            {
                return new Program("starfield", "");
            }
 
            virtual void Apply() override
            {
                OGL::Material::Apply();
                glEnable(GL_VERTEX_PROGRAM_POINT_SIZE);
                assert(this->texture0);
                m_program->Use();
                m_program->texture0.Set(this->texture0, 0);
                m_program->emission.Set(this->emissive);
            }
 
            virtual void Unapply() override
            {
                static_cast<TextureGL *>(texture0)->Unbind();
                glDisable(GL_VERTEX_PROGRAM_POINT_SIZE);
            }
        };
    } // namespace OGL
} // namespace Graphics
 
#endif