thodg/patchwork13/sdl/gl/texture.pw13p.c

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• Hash : 94046104
  Author : Thomas de Grivel
  Date : 2020-02-24T15:19:27
  

  import from branch patchwork13-0.1 on SourceForge.net

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• sdl/gl/texture.pw13p.c

• /*
  
    This is part of Patchwork13! the real-time data synthesis toolkit.
    http://patchwork13.sourceforge.net/
  
    pw13_std - the patchwork13 standard patches library
    Copyright (C) 2005 Bruno Malaquin <broen.42@gmail.com>
  
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License
    as published by the Free Software Foundation; either version 2
    of the License, or (at your option) any later version.
  
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
  
    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  
  *
  
    texture.pw13p.c  -  SDL  opengl texturing patch
  
  */
  #include <pw13/pw13.h>
  #include <std/vect4f.pw13dt.h>
  #include <std/text.pw13dt.h>
  
  #include <stdio.h>
  #include <stdlib.h>
  #include <SDL.h>
  #include <SDL_opengl.h>
  
  GLuint texture[1];
  
  void  pw13_sdl_LoadGLTextures(Pw13_Patch *p)
  {
    p = p;
    SDL_Surface * TextureImage[1];
    /*
    GLuint texture;
    */
  
    if ( ( TextureImage[0] = SDL_LoadBMP( "/goinfre/malaqu_b/patchwork13/trunk/pw13_sdl/gl/nehe.bmp" ) ) ){
  
      glGenTextures( 1, &texture[0] );
      glBindTexture( GL_TEXTURE_2D, texture[0] );
  
      glTexImage2D( GL_TEXTURE_2D, 0, 3, TextureImage[0]->w,
  		  TextureImage[0]->h, 0, GL_BGR,
  		  GL_UNSIGNED_BYTE, TextureImage[0]->pixels );
  
      glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR );
      glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
    } else {
      printf("ERROR SDL_LOADBMP \n");
    }
  
    if ( TextureImage[0] ){
      SDL_FreeSurface( TextureImage[0] );
    }
  
    /*
    return texture;
    */
  }
  
  static void pw13_sdl_gl_texture_pump (Pw13_Patch *p, Pw13_Time *time)
  {
    pw13_pump_sources(p, time);
    p=p;
    time=time;
  
    glBindTexture( GL_TEXTURE_2D, texture[0]);
  
  
    glBegin(GL_QUADS);
  
    glTexCoord2f( 0.0f, 1.0f ); glVertex3f( -1.0f, -1.0f, 1.0f );
    glTexCoord2f( 1.0f, 1.0f ); glVertex3f(  1.0f, -1.0f, 1.0f );
    glTexCoord2f( 1.0f, 0.0f ); glVertex3f(  1.0f,  1.0f, 1.0f );
    glTexCoord2f( 0.0f, 0.0f ); glVertex3f( -1.0f,  1.0f, 1.0f );
  
    glTexCoord2f( 0.0f, 0.0f ); glVertex3f( -1.0f, -1.0f, -1.0f );
    glTexCoord2f( 0.0f, 1.0f ); glVertex3f( -1.0f,  1.0f, -1.0f );
    glTexCoord2f( 1.0f, 1.0f ); glVertex3f(  1.0f,  1.0f, -1.0f );
    glTexCoord2f( 1.0f, 0.0f ); glVertex3f(  1.0f, -1.0f, -1.0f );
  
    glTexCoord2f( 1.0f, 1.0f ); glVertex3f( -1.0f,  1.0f, -1.0f );
    glTexCoord2f( 1.0f, 0.0f ); glVertex3f( -1.0f,  1.0f,  1.0f );
    glTexCoord2f( 0.0f, 0.0f ); glVertex3f(  1.0f,  1.0f,  1.0f );
    glTexCoord2f( 0.0f, 1.0f ); glVertex3f(  1.0f,  1.0f, -1.0f );
  
    glTexCoord2f( 0.0f, 1.0f ); glVertex3f( -1.0f, -1.0f, -1.0f );
    glTexCoord2f( 1.0f, 1.0f ); glVertex3f(  1.0f, -1.0f, -1.0f );
    glTexCoord2f( 1.0f, 0.0f ); glVertex3f(  1.0f, -1.0f,  1.0f );
    glTexCoord2f( 0.0f, 0.0f ); glVertex3f( -1.0f, -1.0f,  1.0f );
  
    glTexCoord2f( 0.0f, 0.0f ); glVertex3f( 1.0f, -1.0f, -1.0f );
    glTexCoord2f( 0.0f, 1.0f ); glVertex3f( 1.0f,  1.0f, -1.0f );
    glTexCoord2f( 1.0f, 1.0f ); glVertex3f( 1.0f,  1.0f,  1.0f );
    glTexCoord2f( 1.0f, 0.0f ); glVertex3f( 1.0f, -1.0f,  1.0f );
  
    glTexCoord2f( 1.0f, 0.0f ); glVertex3f( -1.0f, -1.0f, -1.0f );
    glTexCoord2f( 0.0f, 0.0f ); glVertex3f( -1.0f, -1.0f,  1.0f );
    glTexCoord2f( 0.0f, 1.0f ); glVertex3f( -1.0f,  1.0f,  1.0f );
    glTexCoord2f( 1.0f, 1.0f ); glVertex3f( -1.0f,  1.0f, -1.0f );
  
    glEnd( );
  
  
  
    /*
    glTexGenfv( GL_S, GL_OBJECT_PLANE, pw13_vect4f_input_val(p->input+2) );
    glTexGenfv( GL_T, GL_OBJECT_PLANE, pw13_vect4f_input_val(p->input+3) );
    */
  }
  
  static int pw13_sdl_gl_texture_start (Pw13_Patch *p, Pw13_Time *time)
  {
    p=p;
    time=time;
  
    /*
    p->param = (void*) pw13_sdl_LoadGLTextures( p );
    */
  
    return 1;
  }
  
  PW13_EXPORT
  int pw13_dl_patch_class_init (const char *name, Pw13_Patch *p, void *param)
  {
    param = param;
    pw13_patch_init (name, p, 4, 1);
    pw13_void_input ("()", p->input, p);
    pw13_text_input ("name of texture", p->input+1, p, "nehe.bmp");
    pw13_vect4f_input ("S", p->input+2, p, pw13_vect4f(0,1,0,1) );
    pw13_vect4f_input ("T", p->input+3, p, pw13_vect4f(1,0,0,1) );
    pw13_void_output ("()", p->output, p);
    p->pump = pw13_sdl_gl_texture_pump;
    p->start = pw13_sdl_gl_texture_start;
    return 1;
  }
  

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