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Viewing changes to src/texture.cpp

  • Committer: Bazaar Package Importer
  • Author(s): Lionel Le Folgoc (mr_pouit)
  • Date: 2006-07-15 15:45:57 UTC
  • Revision ID: james.westby@ubuntu.com-20060715154557-3paxq02hx4od0wm4
Tags: upstream-0.2.0
Import upstream version 0.2.0

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src/texture.cpp
 
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/***************************************************************************
 
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 *   Copyright (C) 2006 by Frederic MARTIN                                 *
 
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 *   martin-frederic@users.sourceforge.net                                 *
 
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 *                                                                         *
 
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 *   This program is free software; you can redistribute it and/or modify  *
 
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 *   it under the terms of the GNU General Public License as published by  *
 
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 *   the Free Software Foundation; either version 2 of the License, or     *
 
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 *   (at your option) any later version.                                   *
 
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 *                                                                         *
 
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 *   This program is distributed in the hope that it will be useful,       *
 
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 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 
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 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 
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 *   GNU General Public License for more details.                          *
 
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 *                                                                         *
 
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 *   You should have received a copy of the GNU General Public License     *
 
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 *   along with this program; if not, write to the                         *
 
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 *   Free Software Foundation, Inc.,                                       *
 
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 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 
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 ***************************************************************************/
 
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#include "texture.h"
 
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#include <SDL/SDL_image.h>
 
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#include <string.h>
 
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CBasicTexture::CBasicTexture()
 
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{
 
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}
 
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CBasicTexture::~CBasicTexture()
 
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{
 
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        unload();
 
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}
 
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// Formats : BMP, PNM, XPM, LBM, PCX, GIF, JPEG, PNG, TGA.
 
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bool CBasicTexture::load(const char *file, bool mipmap )        
 
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{
 
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        SDL_Surface *surface;
 
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        int pixel;
 
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        surface = IMG_Load(file);
 
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        if (surface == NULL)
 
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                return false;
 
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        pixel=surface->format->BitsPerPixel;
 
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        width=surface->w;
 
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        height=surface->h;
 
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        mipmapping=mipmap;
 
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        glGenTextures(1, &id);
 
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        glBindTexture(GL_TEXTURE_2D, id);
 
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        if (mipmap)
 
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        {
 
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                if ( pixel == 24)
 
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                        gluBuild2DMipmaps(GL_TEXTURE_2D, 3, width, height, GL_RGB, GL_UNSIGNED_BYTE, surface->pixels);
 
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                else
 
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                        gluBuild2DMipmaps(GL_TEXTURE_2D,4,width, height, GL_RGBA,GL_UNSIGNED_BYTE,surface->pixels);
 
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                SetTexParameter(GL_TEXTURE_MIN_FILTER,GL_LINEAR_MIPMAP_LINEAR);
 
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                SetTexParameter(GL_TEXTURE_MAG_FILTER,GL_LINEAR_MIPMAP_LINEAR);
 
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        }
 
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        else
 
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        {
 
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                if ( pixel == 24)
 
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                        glTexImage2D(GL_TEXTURE_2D,0,3,width, height,0, GL_RGB,GL_UNSIGNED_BYTE,surface->pixels);
 
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                else
 
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                        glTexImage2D(GL_TEXTURE_2D,0,4,width, height,0, GL_RGBA,GL_UNSIGNED_BYTE,surface->pixels);
 
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                SetTexParameter(GL_TEXTURE_MIN_FILTER,GL_LINEAR);
 
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                SetTexParameter(GL_TEXTURE_MAG_FILTER,GL_LINEAR);
 
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        }
 
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        SDL_FreeSurface(surface);
 
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        surface = NULL;
 
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        return true;
 
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}
 
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void CBasicTexture::bind()
 
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{
 
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        glBindTexture ( GL_TEXTURE_2D, id);
 
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}
 
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void CBasicTexture::SetTexParameter (GLenum type, GLint mode)
 
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{
 
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        bind();
 
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        glTexParameteri(GL_TEXTURE_2D,
 
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                                        type,
 
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                                        mode);
 
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}
 
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void CBasicTexture::Set_Blending (GLint mode, GLfloat *env_color)
 
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{
 
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        bind();
 
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        if (mode == GL_BLEND)
 
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        {
 
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                glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, (GLfloat) mode);
 
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                glTexEnvfv(GL_TEXTURE_ENV,GL_TEXTURE_ENV_COLOR,(GLfloat*)env_color);
 
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        }
 
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        else
 
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        {
 
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                glTexEnvf(GL_TEXTURE_ENV,GL_TEXTURE_ENV_MODE, (GLfloat) mode);
 
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        }
 
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}
 
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void CBasicTexture::Set_Blending (GLint mode)
 
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{
 
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        bind();
 
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        glTexEnvf(GL_TEXTURE_ENV,GL_TEXTURE_ENV_MODE, (GLfloat) mode);
 
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}
 
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void CBasicTexture::unload()
 
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{
 
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        glDeleteTextures(1,&id);
 
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}
 
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