Esempio n. 1
0
/* Load a PNG texture 
 * 
 *  Parameters : constant which indicate if we use alpha or not
 *                        alpha = PNG_FULL_ALPHA or PNG_NO_ALPHA
 * 
 * */
void GraphicalElement::createTexturePNG(char *fileName, int alpha, int indiceTex)
{
	kos_img_t img;
	pvr_ptr_t txaddr;
	GLuint txr;

	if (png_to_img(fileName, alpha, &img) < 0) 
	{
	  printf("can't load %s\n", fileName);
	  return;
	}

	txaddr = pvr_mem_malloc(img.w * img.h * 2);
	pvr_txr_load_kimg(&img, txaddr, PVR_TXRLOAD_INVERT_Y);
	kos_img_free(&img, 0);


  	glGenTextures(1, &txr);
  	
  	/* insertion in the vector */
  	listeTexture.push_back(txr);
  	glBindTexture(GL_TEXTURE_2D, listeTexture.back());
  	
	glKosTex2D(GL_ARGB4444_TWID, img.w, img.h, txaddr);
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_FILTER, GL_FILTER_BILINEAR);
}
Esempio n. 2
0
int
main (int argc, char* argv[])
{
  int cable_type, quit = 0;
  float rot1 = 0.0, rot2 = 0.0, rot3 = 0.0;
  kos_img_t front_txr, back_txr, tmp_img;
  pvr_ptr_t texaddr;
  GLuint texture[8];
  int blendfunc = 2;
  float eye_rot = 0;

  cable_type = vid_check_cable ();
  
  if (cable_type == CT_VGA)
    vid_init (DM_640x480_VGA, PM_RGB565);
  else
    vid_init (DM_640x480_PAL_IL, PM_RGB565);
  
  init_pvr ();

  glKosInit ();

  sphere = mkspheredata (3, &nstrip, &stripl);

  glGenTextures (8, &texture[0]);

#if 1
  kmg_to_img ("/rd/sky1.kmg", &front_txr);
  texaddr = pvr_mem_malloc (front_txr.byte_count);
  pvr_txr_load_kimg (&front_txr, texaddr, PVR_TXRFMT_VQ_ENABLE);
  kos_img_free (&front_txr, 0);
  
  glBindTexture (GL_TEXTURE_2D, texture[0]);
  glKosTex2D (GL_RGB565_TWID | GL_VQ_ENABLE, front_txr.w, front_txr.h,
	      texaddr);

  kmg_to_img ("/rd/sky2o.kmg", &back_txr);
  texaddr = pvr_mem_malloc (back_txr.byte_count);
  pvr_txr_load_kimg (&back_txr, texaddr, PVR_TXRFMT_VQ_ENABLE);
  kos_img_free (&back_txr, 0);

  glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
  glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);

  glBindTexture (GL_TEXTURE_2D, texture[1]);
  glKosTex2D (GL_ARGB4444_TWID | GL_VQ_ENABLE, back_txr.w, back_txr.h, texaddr);

  glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
  glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
  
  glBindTexture (GL_TEXTURE_2D, texture[2]);
  kmg_to_img ("/rd/sky3.kmg", &tmp_img);
  texaddr = pvr_mem_malloc (tmp_img.byte_count);
  pvr_txr_load_kimg (&tmp_img, texaddr, PVR_TXRFMT_VQ_ENABLE);
  glKosTex2D (GL_RGB565_TWID | GL_VQ_ENABLE, tmp_img.w, tmp_img.h, texaddr);

  glBindTexture (GL_TEXTURE_2D, texture[3]);
  kmg_to_img ("/rd/sky4.kmg", &tmp_img);
  texaddr = pvr_mem_malloc (tmp_img.byte_count);
  pvr_txr_load_kimg (&tmp_img, texaddr, PVR_TXRFMT_VQ_ENABLE);
  glKosTex2D (GL_RGB565_TWID | GL_VQ_ENABLE, tmp_img.w, tmp_img.h, texaddr);

  glBindTexture (GL_TEXTURE_2D, texture[4]);
  kmg_to_img ("/rd/sky5.kmg", &tmp_img);
  texaddr = pvr_mem_malloc (tmp_img.byte_count);
  pvr_txr_load_kimg (&tmp_img, texaddr, PVR_TXRFMT_VQ_ENABLE);
  glKosTex2D (GL_RGB565_TWID | GL_VQ_ENABLE, tmp_img.w, tmp_img.h, texaddr);

  glBindTexture (GL_TEXTURE_2D, texture[5]);
  kmg_to_img ("/rd/sky6.kmg", &tmp_img);
  texaddr = pvr_mem_malloc (tmp_img.byte_count);
  pvr_txr_load_kimg (&tmp_img, texaddr, PVR_TXRFMT_VQ_ENABLE);
  glKosTex2D (GL_RGB565_TWID | GL_VQ_ENABLE, tmp_img.w, tmp_img.h, texaddr);

  glBindTexture (GL_TEXTURE_2D, texture[6]);
  kmg_to_img ("/rd/sky7.kmg", &tmp_img);
  texaddr = pvr_mem_malloc (tmp_img.byte_count);
  pvr_txr_load_kimg (&tmp_img, texaddr, PVR_TXRFMT_VQ_ENABLE);
  glKosTex2D (GL_RGB565_TWID | GL_VQ_ENABLE, tmp_img.w, tmp_img.h, texaddr);

  glBindTexture (GL_TEXTURE_2D, texture[7]);
  kmg_to_img ("/rd/sky8.kmg", &tmp_img);
  texaddr = pvr_mem_malloc (tmp_img.byte_count);
  pvr_txr_load_kimg (&tmp_img, texaddr, PVR_TXRFMT_VQ_ENABLE);
  glKosTex2D (GL_RGB565_TWID | GL_VQ_ENABLE, tmp_img.w, tmp_img.h, texaddr);

#else  
  png_to_img ("/rd/sky1.png", PNG_MASK_ALPHA, &front_txr);
  texaddr = pvr_mem_malloc (front_txr.w * front_txr.h * 2);
  pvr_txr_load_kimg (&front_txr, texaddr, PVR_TXRLOAD_INVERT_Y);
  kos_img_free (&front_txr, 0);
  
  glBindTexture (GL_TEXTURE_2D, texture[0]);
  glKosTex2D (GL_ARGB1555_TWID, front_txr.w, front_txr.h, texaddr);

  png_to_img ("/rd/sky2o.png", PNG_MASK_ALPHA, &back_txr);
  texaddr = pvr_mem_malloc (back_txr.w * back_txr.h * 2);
  pvr_txr_load_kimg (&back_txr, texaddr, PVR_TXRLOAD_INVERT_Y);
  kos_img_free (&back_txr, 0);

  glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
  glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);

  glBindTexture (GL_TEXTURE_2D, texture[1]);
  glKosTex2D (GL_ARGB1555_TWID, back_txr.w, back_txr.h, texaddr);

  glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
  glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
  
  glBindTexture (GL_TEXTURE_2D, texture[2]);
  texaddr = pvr_mem_malloc (TEXSIZE * TEXSIZE * 2);
  png_to_texture ("/rd/sky3.png", texaddr, PNG_NO_ALPHA);
  glKosTex2D (GL_RGB565_TWID, TEXSIZE, TEXSIZE, texaddr);

  glBindTexture (GL_TEXTURE_2D, texture[3]);
  texaddr = pvr_mem_malloc (TEXSIZE * TEXSIZE * 2);
  png_to_texture ("/rd/sky4.png", texaddr, PNG_NO_ALPHA);
  glKosTex2D (GL_RGB565_TWID, TEXSIZE, TEXSIZE, texaddr);

  glBindTexture (GL_TEXTURE_2D, texture[4]);
  texaddr = pvr_mem_malloc (TEXSIZE * TEXSIZE * 2);
  png_to_texture ("/rd/sky5.png", texaddr, PNG_NO_ALPHA);
  glKosTex2D (GL_RGB565_TWID, TEXSIZE, TEXSIZE, texaddr);

  glBindTexture (GL_TEXTURE_2D, texture[5]);
  texaddr = pvr_mem_malloc (TEXSIZE * TEXSIZE * 2);
  png_to_texture ("/rd/sky6.png", texaddr, PNG_NO_ALPHA);
  glKosTex2D (GL_RGB565_TWID, TEXSIZE, TEXSIZE, texaddr);

  glBindTexture (GL_TEXTURE_2D, texture[6]);
  texaddr = pvr_mem_malloc (TEXSIZE * TEXSIZE * 2);
  png_to_texture ("/rd/sky7.png", texaddr, PNG_NO_ALPHA);
  glKosTex2D (GL_RGB565_TWID, TEXSIZE, TEXSIZE, texaddr);

  glBindTexture (GL_TEXTURE_2D, texture[7]);
  texaddr = pvr_mem_malloc (TEXSIZE * TEXSIZE * 2);
  png_to_texture ("/rd/sky8.png", texaddr, PNG_NO_ALPHA);
  glKosTex2D (GL_RGB565_TWID, TEXSIZE, TEXSIZE, texaddr);
#endif
  
  glEnable (GL_DEPTH_TEST);
  glEnable (GL_CULL_FACE);
  glEnable (GL_TEXTURE_2D);
  glShadeModel (GL_SMOOTH);
  glClearDepth (1.0f);
  glDepthFunc (GL_LEQUAL);
  
  glMatrixMode (GL_PROJECTION);
  glLoadIdentity ();
  gluPerspective (60.0,			/* Field of view in degrees.  */
		  640.0 / 480.0,	/* Aspect ratio.  */
		  1.0,			/* Z near.  */
		  50.0);		/* Z far.  */

  glMatrixMode (GL_MODELVIEW);
  
  while (!quit)
    {
      MAPLE_FOREACH_BEGIN (MAPLE_FUNC_CONTROLLER, cont_state_t, st)
        {
	  if (st->buttons & CONT_START)
	    quit = 1;
	  
	  eye_pos[0] = st->joyx / 25.0;
	  eye_pos[1] = st->joyy / 25.0;
	  eye_pos[2] = 5 * sin (eye_rot);
	  
	  if (st->buttons & CONT_A)
	    blendfunc = 0;
	  else if (st->buttons & CONT_B)
	    blendfunc = 1;
	  else if (st->buttons & CONT_X)
	    blendfunc = 2;
	}
      MAPLE_FOREACH_END ()
      
      draw_vectors = 10;
      
      glLoadIdentity ();
      gluLookAt (eye_pos[0], eye_pos[1], eye_pos[2],	/* Eye position.  */
		 0.0,   0.0,   0.0,			/* Centre.  */
		 0.0,   1.0,   0.0);			/* Up.  */

      glGetFloatv (GL_MODELVIEW_MATRIX, &camera[0][0]);

      invcamera[0][0] = camera[0][0];
      invcamera[0][1] = camera[1][0];
      invcamera[0][2] = camera[2][0];
      invcamera[0][3] = 0.0;

      invcamera[1][0] = camera[0][1];
      invcamera[1][1] = camera[1][1];
      invcamera[1][2] = camera[2][1];
      invcamera[1][3] = 0.0;

      invcamera[2][0] = camera[0][2];
      invcamera[2][1] = camera[1][2];
      invcamera[2][2] = camera[2][2];
      invcamera[2][3] = 0.0;

      invcamera[3][0] = 0.0;
      invcamera[3][1] = 0.0;
      invcamera[3][2] = 0.0;
      invcamera[3][3] = 1.0;

      /*dbgio_printf ("inverted camera orthogonality: %f %f %f\n",
		    (double) vec_dot (invcamera[0], invcamera[1]),
		    (double) vec_dot (invcamera[1], invcamera[2]),
		    (double) vec_dot (invcamera[2], invcamera[0]));*/

      /*dbgio_printf ("Inverted camera matrix:\n");
      for (i = 0; i < 4; i++)
	{
	  dbgio_printf ("[ %f %f %f %f ]\n",
                	(double) invcamera[0][i], (double) invcamera[1][i],
	        	(double) invcamera[2][i], (double) invcamera[3][i]);
	}*/

      glKosBeginFrame ();

      /*glPushMatrix ();
      glTranslatef (-camera[3][0], -camera[3][1], -camera[3][2]);*/
      render_cube (&texture[2]);
      /*glPopMatrix ();*/
      
      glPushMatrix ();
      
      #if 1
      glRotatef (rot1, 0.0, 1.0, 0.0);
      rot1 += 0.7;
      glRotatef (rot2, 1.0, 0.0, 0.0);
      rot2 += 0.29;
      #else
      glRotatef (rot1, 0.0, 0.0, 1.0);
      rot1 += 0.7;
      #endif
      
      if (rot1 >= 360)
        rot1 -= 360;

      if (rot2 >= 360)
        rot2 -= 360;
      
      eye_rot += 0.05;
      if (eye_rot >= 2 * M_PI)
        eye_rot -= 2 * M_PI;
      
      blob_phase += 0.05;
      if (blob_phase >= 24 * M_PI)
        blob_phase -= 24 * M_PI;
      
      /* Render front.  */
      glBindTexture (GL_TEXTURE_2D, texture[0]);
      glTexEnvi (GL_TEXTURE_2D, GL_TEXTURE_ENV_MODE, GL_MODULATE);

      #if 1
      render_blob (sphere, nstrip, stripl, 1);
      #else
      render_torus (1.0, 0.6, 1);
      #endif
            
      glPushMatrix ();
      glRotatef (rot3, 1.0, 0.0, 0.0);
      glTranslatef (2.9, 0.0, 0.0);
      render_torus (0.8, 0.5, 1);
      glPopMatrix ();
      glPushMatrix ();
      glRotatef (-rot3, 1.0, 0.0, 0.0);
      glTranslatef (-2.9, 0.0, 0.0);
      render_torus (0.8, 0.5, 1);
      glPopMatrix ();
      
      glKosFinishList ();

      /* Render back.  */
      glBindTexture (GL_TEXTURE_2D, texture[1]);
      glTexEnvi (GL_TEXTURE_2D, GL_TEXTURE_ENV_MODE, GL_MODULATE);
      if (blendfunc == 0)
        glBlendFunc (GL_SRC_ALPHA, GL_ZERO);
      else if (blendfunc == 1)
        glBlendFunc (GL_ZERO, GL_ONE_MINUS_SRC_ALPHA);
      else
        glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
	
      #if 1
      //glDisable (GL_TEXTURE_2D);
      render_blob (sphere, nstrip, stripl, 0);
      //glEnable (GL_TEXTURE_2D);
      #else
      render_torus (1.0, 0.6, 0);
      #endif

      glPushMatrix ();
      glRotatef (rot3, 1.0, 0.0, 0.0);
      glTranslatef (2.9, 0.0, 0.0);
      render_torus (0.8, 0.5, 0);
      glPopMatrix ();
      glPushMatrix ();
      glRotatef (-rot3, 1.0, 0.0, 0.0);
      glTranslatef (-2.9, 0.0, 0.0);
      render_torus (0.8, 0.5, 0);
      glPopMatrix ();

      rot3 += 1;
      if (rot3 >= 360)
        rot3 -= 360;

      glPopMatrix ();
      
      glKosFinishFrame ();
    }
  
  glKosShutdown ();
  
  pvr_shutdown ();
  
  vid_shutdown ();
  /* Make dc-load look nicer.  */
  vid_init (DM_640x480_PAL_IL, PM_RGB565);

  return 0;
}
Esempio n. 3
0
int
main (int argc, char *argv[])
{
  int cable_type;
  int quit = 0;
  float rot1 = 0.0, rot2 = 0.0, rot3 = 0.0;
  kos_img_t cubetxr;
  GLuint texture[2];
  pvr_ptr_t texaddr;
  pvr_ptr_t bumpmap;
  /* Consider this as the vector from the object to the light, for now.  */
  GLfloat light_position[3] = { 0.7, 0.7, 2.0 };
  
  vec_normalize (&light_position[0], &light_position[0]);
  
  cable_type = vid_check_cable ();
  
  printf ("KOS says M_PI is: %f\n", M_PI);
  
  if (cable_type == CT_VGA)
    vid_init (DM_640x480_VGA, PM_RGB565);
  else
    vid_init (DM_640x480_PAL_IL, PM_RGB565);
  
  init_pvr ();
  
  auto_orient ();
  
  png_to_img ("/rd/cube.png", PNG_NO_ALPHA, &cubetxr);
  
  texaddr = pvr_mem_malloc (cubetxr.w * cubetxr.h * 2);
  pvr_txr_load_kimg (&cubetxr, texaddr, PVR_TXRLOAD_INVERT_Y);
  kos_img_free (&cubetxr, 0);
  
  bumpmap = load_bumpmap ("/rd/bump.raw");
  
  vid_border_color (0, 0, 0);
  pvr_set_bg_color (0.0, 0.0, 0.0);
    
  glKosInit ();
  
  glEnable (GL_DEPTH_TEST);
  glEnable (GL_CULL_FACE);
  glEnable (GL_TEXTURE_2D);
  glShadeModel (GL_SMOOTH);
  glClearDepth (1.0f);
  glDepthFunc (GL_LEQUAL);

  glMatrixMode (GL_PROJECTION);
  glLoadIdentity ();
  gluPerspective (45.0,			/* Field of view in degrees.  */
		  640.0 / 480.0,	/* Aspect ratio.  */
		  1.0,			/* Z near.  */
		  50.0);		/* Z far.  */

  glMatrixMode (GL_MODELVIEW);
  glLoadIdentity ();
  gluLookAt (0.0,   0.0,  -4.5,		/* Eye position.  */
	     0.0,   0.0,   0.0,		/* Centre.  */
	     0.0,   1.0,   0.0);	/* Up.  */

  glGenTextures (2, &texture[0]);

  /* Ordinary texture.  */
  glBindTexture (GL_TEXTURE_2D, texture[0]);
  glKosTex2D (GL_RGB565_TWID, cubetxr.w, cubetxr.h, texaddr);

  /* Bump texture.  */
  glBindTexture (GL_TEXTURE_2D, texture[1]);

  /*pvr_poly_cxt_txr (cxt, PVR_LIST_OP_POLY,
                    PVR_TXRFMT_BUMP | PVR_TXRFMT_TWIDDLED,
                    128, 128, bumpmap, PVR_FILTER_BILINEAR);*/
  glKosTex2D (GL_BUMP_TWID, 128, 128, bumpmap);

  glTexEnvi (GL_TEXTURE_2D, GL_TEXTURE_ENV_MODE, GL_MODULATE);

  /* Break the nice abstraction.  Tweak for bump mapping.  */
  /*cxt = (pvr_poly_cxt_t *) texture[1];
  cxt->gen.specular = PVR_SPECULAR_ENABLE;*/
  /*pvr_poly_compile (&bumphdr, cxt);*/
  
  printf ("objmatrix at %p\n", objmatrix);
  
  while (!quit)
    {
      int faces;
      GLfloat transformed_normals
        [sizeof (face_normals) / (3 * sizeof (GLfloat))][3];
      GLfloat transformed_orient
        [sizeof (face_orient) / (3 * sizeof (GLfloat))][3];
      
      MAPLE_FOREACH_BEGIN (MAPLE_FUNC_CONTROLLER, cont_state_t, st)
        if (st->buttons & CONT_START)
	  quit = 1;
      MAPLE_FOREACH_END ()
      
      glKosBeginFrame ();
      
      glPushMatrix ();
      
      glRotatef (rot1, 1.0, 0.0, 0.0);
      glRotatef (rot2, 0.0, 1.0, 0.0);
      glRotatef (rot3, 0.0, 0.0, 1.0);
      
      rot1 += 0.1;
      rot2 += 0.2;
      rot3 += 0.3;

      /* Get the object's transformation matrix.  */
      glGetFloatv (GL_MODELVIEW_MATRIX, &objmatrix[0][0]);
      /* We care only about rotation for now.  */
      objmatrix[0][3] = objmatrix[1][3] = objmatrix[2][3] = 0.0;
      objmatrix[3][0] = objmatrix[3][1] = objmatrix[3][2] = 0.0;
      objmatrix[3][3] = 1.0;

      /*printf ("Got matrix:\n");
      printf ("[ %f %f %f %f ]\n", objmatrix[0][0], objmatrix[0][1],
				   objmatrix[0][2], objmatrix[0][3]);
      printf ("[ %f %f %f %f ]\n", objmatrix[1][0], objmatrix[1][1],
				   objmatrix[1][2], objmatrix[1][3]);
      printf ("[ %f %f %f %f ]\n", objmatrix[2][0], objmatrix[2][1],
				   objmatrix[2][2], objmatrix[2][3]);
      printf ("[ %f %f %f %f ]\n", objmatrix[3][0], objmatrix[3][1],
				   objmatrix[3][2], objmatrix[3][3]);*/

      /* Do these all in one go.  */
      mat_load ((matrix_t *) &objmatrix[0][0]);

      /* Note: mat_transform is only for 3D->2D (perspective)
         transformations!  This won't be quite as quick, most likely.  */
      for (faces = 0; faces < 6; faces++)
        {
	  GLfloat x = face_normals[faces][0];
	  GLfloat y = face_normals[faces][1];
	  GLfloat z = face_normals[faces][2];
	  GLfloat w = 1.0;
	  mat_trans_nodiv (x, y, z, w);
	  transformed_normals[faces][0] = x;
	  transformed_normals[faces][1] = y;
	  transformed_normals[faces][2] = z;

	  x = face_orient[faces][0];
	  y = face_orient[faces][1];
	  z = face_orient[faces][2];
	  w = 1.0;
	  mat_trans_nodiv (x, y, z, w);
	  transformed_orient[faces][0] = x;
	  transformed_orient[faces][1] = y;
	  transformed_orient[faces][2] = z;
	}
      glKosMatrixDirty ();

      glDisable (GL_KOS_OFFSET_COLOR);
      glBindTexture (GL_TEXTURE_2D, texture[0]);
      glDisable (GL_TEXTURE_2D);
      //glBlendFunc (GL_DST_COLOR, GL_ZERO);
      glBlendFunc (GL_ONE, GL_ZERO);

      for (faces = 0; faces < 6; faces++)
        {
	  int strip;
	  	  
	  glBegin (GL_TRIANGLE_STRIP);

	  glColor4ub (colour[faces][0], colour[faces][1], colour[faces][2],
		      colour[faces][3]);

	  for (strip = 0; strip < 4; strip++)
	    {
	      glTexCoord2fv (texcoords[strip]);
	      glVertex3fv (points[tristrips[faces][strip]]);
	    }
	  
	  glEnd ();
	}

      /* Finish opaque list, start transparent list.  */
      glKosFinishList ();

      glBindTexture (GL_TEXTURE_2D, texture[1]);
      glEnable (GL_TEXTURE_2D);
      glEnable (GL_KOS_OFFSET_COLOR);
      glBlendFunc (GL_ZERO, GL_SRC_ALPHA);
      
      for (faces = 0; faces < 6; faces++)
        {
	  int strip, over_pi, over_2pi;
	  GLfloat s_dot_n, f[3], d[3], t, q;
	  GLfloat d_cross_r[3], dxr_len, d_len;

	  s_dot_n = vec_dot (&transformed_normals[faces][0],
			     &light_position[0]);
	  /* Elevation (T) angle:
	     s.n = |s| |n| cos T
	     T = acos (s.n / (|s| * |n|))
	     |s| and |n| are both 1.  */
	  t = M_PI / 2 - acosf (s_dot_n);
	  
	  if (t < 0)
	    t = 0;
	  
	  /* Rotation (Q) angle:
	     d x r = (|d| |r| sin Q) n
	     |d x r| / (|d| |r|) = sin Q.  */
	  vec_scale (&f[0], &transformed_normals[faces][0], s_dot_n);
	  vec_sub (&d[0], &light_position[0], &f[0]);
	  vec_cross (&d_cross_r[0], &d[0], &transformed_orient[faces][0]);
	  dxr_len = vec_length (&d_cross_r[0]);
	  d_len = vec_length (&d[0]);
	  q = asinf (dxr_len / d_len);
	  
	  over_pi = vec_dot (&d[0], &transformed_orient[faces][0]) < 0;
	  if (over_pi)
	    q = M_PI - q;

	  over_2pi
	    = vec_dot (&d_cross_r[0], &transformed_normals[faces][0]) < 0;
	  if (over_2pi)
	    q = 2 * M_PI - q;

	  /*printf ("length of n: %f\n",
		 length (&transformed_normals[faces][0]));
	  printf ("%d: [ %f %f %f ]\n", faces, transformed_normals[faces][0],
	    transformed_normals[faces][1], transformed_normals[faces][2]);

	  printf ("length of r: %f\n", length (&transformed_orient[faces][0]));
	  printf ("%d: [ %f %f %f ]\n", faces, transformed_orient[faces][0],
	    transformed_orient[faces][1], transformed_orient[faces][2]);*/

	  glBegin (GL_TRIANGLE_STRIP);

	  set_bump_direction (t, 2 * M_PI - q, 1.0);
	  glColor4ub (255, 255, 255, 255);

	  for (strip = 0; strip < 4; strip++)
	    {
	      glTexCoord2fv (texcoords[strip]);
	      glVertex3fv (points[tristrips[faces][strip]]);
	    }

	  glEnd ();
	}

      /* Finish opaque polygon list, start translucent polygon list.  */
     /* glKosFinishList ();*/

      glPopMatrix ();
                  
      glKosFinishFrame ();
    }

  glKosShutdown ();
  
  pvr_shutdown ();
  
  vid_shutdown ();
  
  return 0;
}