]> git.sesse.net Git - vlc/blobdiff - modules/video_output/opengl.c
Removes trailing spaces. Removes tabs.
[vlc] / modules / video_output / opengl.c
index 443580fa87af17e75ef215b3b4672a22e2b7d84f..dfeeb6bbe8f1958e305e98df1bf51879f5958bfb 100644 (file)
@@ -7,7 +7,7 @@
  * Authors: Cyril Deguet <asmax@videolan.org>
  *          Gildas Bazin <gbazin@videolan.org>
  *          Eric Petit <titer@m0k.org>
- *                 Cedric Cocquebert <cedric.cocquebert@supelec.fr>
+ *          Cedric Cocquebert <cedric.cocquebert@supelec.fr>
  *
  * 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
@@ -28,8 +28,6 @@
  * Preamble
  *****************************************************************************/
 #include <errno.h>                                                 /* ENOMEM */
-#include <stdlib.h>                                      /* malloc(), free() */
-#include <string.h>
 
 #include <vlc/vlc.h>
 #include <vlc_vout.h>
 #define OPENGL_EFFECT_NONE             1
 #define OPENGL_EFFECT_CUBE             2
 #define OPENGL_EFFECT_TRANSPARENT_CUBE 4
-#if defined( HAVE_GL_GLU_H ) || defined( SYS_DARWIN )
-    #define OPENGL_MORE_EFFECT            8
+#if defined( HAVE_GL_GLU_H ) || defined( __APPLE__ )
+    #define OPENGL_MORE_EFFECT           8
 #endif
 
 #ifdef OPENGL_MORE_EFFECT
-       #include <math.h>
-       #ifdef SYS_DARWIN
-               #include <OpenGL/glu.h>
-       #else
-               #include <GL/glu.h>
-       #endif
+    #include <math.h>
+    #ifdef __APPLE__
+        #include <OpenGL/glu.h>
+    #else
+        #include <GL/glu.h>
+    #endif
 /* 3D MODEL */
-       #define CYLINDER 8
-       #define TORUS    16
-       #define SPHERE   32
+    #define CYLINDER 8
+    #define TORUS     16
+    #define SPHERE   32
 /*GRID2D TRANSFORMATION */
-       #define SQUAREXY 64
-       #define SQUARER  128
-       #define ASINXY   256
-       #define ASINR    512
-       #define SINEXY   1024
-       #define SINER    2048
-       #define INIFILE  4096                                   // not used, just for mark end ...
-       #define SIGN(x)  (x < 0 ? (-1) : 1)
-       #define PID2     1.570796326794896619231322
-
-       static char *ppsz_effects[] = {
-                       "none", "cube", "transparent-cube", "cylinder", "torus", "sphere","SQUAREXY","SQUARER", "ASINXY", "ASINR", "SINEXY", "SINER" };
-       static char *ppsz_effects_text[] = {
-                       N_("None"), N_("Cube"), N_("Transparent Cube"), 
-                       N_("Cylinder"), N_("Torus"), N_("Sphere"), N_("SQUAREXY"),N_("SQUARER"), N_("ASINXY"), N_("ASINR"), N_("SINEXY"), N_("SINER") };
+    #define SQUAREXY 64
+    #define SQUARER  128
+    #define ASINXY   256
+    #define ASINR    512
+    #define SINEXY   1024
+    #define SINER    2048
+    #define INIFILE     4096                    // not used, just for mark end ...
+    #define SIGN(x)     (x < 0 ? (-1) : 1)
+    #define PID2     1.570796326794896619231322
+
+    static const char *ppsz_effects[] = {
+            "none", "cube", "transparent-cube", "cylinder", "torus", "sphere","SQUAREXY","SQUARER", "ASINXY", "ASINR", "SINEXY", "SINER" };
+    static const char *ppsz_effects_text[] = {
+            N_("None"), N_("Cube"), N_("Transparent Cube"),
+            N_("Cylinder"), N_("Torus"), N_("Sphere"), N_("SQUAREXY"),N_("SQUARER"), N_("ASINXY"), N_("ASINR"), N_("SINEXY"), N_("SINER") };
 #endif
 
 /*****************************************************************************
@@ -137,14 +135,17 @@ static int  Control      ( vout_thread_t *, int, va_list );
 
 static inline int GetAlignedSize( int );
 
-static int InitTextures( vout_thread_t * );
-static int SendEvents( vlc_object_t *, char const *,
-                       vlc_value_t, vlc_value_t, void * );
+static int InitTextures  ( vout_thread_t * );
+static int SendEvents    ( vlc_object_t *, char const *,
+                           vlc_value_t, vlc_value_t, void * );
+
+#ifdef OPENGL_MORE_EFFECT
+static float Z_Compute   ( float, int, float, float );
+static void Transform    ( float, int, float, float, int, int, int, int, double *, double * );
 
 /*****************************************************************************
  * Module descriptor
  *****************************************************************************/
-#ifdef OPENGL_MORE_EFFECT
 #define ACCURACY_TEXT N_( "OpenGL sampling accuracy " )
 #define ACCURACY_LONGTEXT N_( "Select the accuracy of 3D object sampling(1 = min and 10 = max)" )
 #define RADIUS_TEXT N_( "OpenGL Cylinder radius" )
@@ -167,9 +168,9 @@ static int SendEvents( vlc_object_t *, char const *,
     "Several visual OpenGL effects are available." )
 
 #ifndef OPENGL_MORE_EFFECT
-static char *ppsz_effects[] = {
+static const char *ppsz_effects[] = {
         "none", "cube", "transparent-cube" };
-static char *ppsz_effects_text[] = {
+static const char *ppsz_effects_text[] = {
         N_("None"), N_("Cube"), N_("Transparent Cube") };
 #endif
 
@@ -202,7 +203,7 @@ vlc_module_begin();
     set_callbacks( CreateVout, DestroyVout );
     add_string( "opengl-effect", "none", NULL, EFFECT_TEXT,
                  EFFECT_LONGTEXT, VLC_FALSE );
-               change_string_list( ppsz_effects, ppsz_effects_text, 0 );
+        change_string_list( ppsz_effects, ppsz_effects_text, 0 );
 vlc_module_end();
 
 /*****************************************************************************
@@ -459,19 +460,19 @@ static int Init( vout_thread_t *p_vout )
     else
     {
 #ifdef OPENGL_MORE_EFFECT
-               p_sys->i_effect = 3;
+        p_sys->i_effect = 3;
         while (( strcmp( val.psz_string, ppsz_effects[p_sys->i_effect]) ) && (pow(2,p_sys->i_effect) < INIFILE))
         {
             p_sys->i_effect ++;
         }
-               if (pow(2,p_sys->i_effect) < INIFILE) 
-                       p_sys->i_effect = pow(2,p_sys->i_effect);
-               else if ( strcmp( val.psz_string, ppsz_effects[p_sys->i_effect]))
-               {
-                       msg_Warn( p_vout, "no valid opengl effect provided, using "
-                                         "\"none\"" );
-                       p_sys->i_effect = OPENGL_EFFECT_NONE;
-               }
+        if (pow(2,p_sys->i_effect) < INIFILE)
+            p_sys->i_effect = pow(2,p_sys->i_effect);
+        else if ( strcmp( val.psz_string, ppsz_effects[p_sys->i_effect]))
+        {
+            msg_Warn( p_vout, "no valid opengl effect provided, using "
+                      "\"none\"" );
+            p_sys->i_effect = OPENGL_EFFECT_NONE;
+        }
 #else
         msg_Warn( p_vout, "no valid opengl effect provided, using "
                   "\"none\"" );
@@ -492,7 +493,7 @@ static int Init( vout_thread_t *p_vout )
         glTranslatef( 0.0, 0.0, - 5.0 );
     }
 #ifdef OPENGL_MORE_EFFECT
-       else 
+    else
     {
         /* Set the perpective */
         glMatrixMode( GL_PROJECTION );
@@ -502,11 +503,11 @@ static int Init( vout_thread_t *p_vout )
         glLoadIdentity();
         glTranslatef( 0.0, 0.0, -3.0 );
 
-               float f_pov_x, f_pov_y, f_pov_z;
-               f_pov_x = var_CreateGetFloat( p_vout, "opengl-pov-x");
-               f_pov_y = var_CreateGetFloat( p_vout, "opengl-pov-y");
-               f_pov_z = var_CreateGetFloat( p_vout, "opengl-pov-z");
-               gluLookAt(0, 0, 0, f_pov_x, f_pov_y, f_pov_z, 0, 1, 0);
+        float f_pov_x, f_pov_y, f_pov_z;
+        f_pov_x = var_CreateGetFloat( p_vout, "opengl-pov-x");
+        f_pov_y = var_CreateGetFloat( p_vout, "opengl-pov-y");
+        f_pov_z = var_CreateGetFloat( p_vout, "opengl-pov-z");
+        gluLookAt(0, 0, 0, f_pov_x, f_pov_y, f_pov_z, 0, 1, 0);
     }
 #endif
     if( p_sys->p_vout->pf_unlock )
@@ -613,16 +614,16 @@ static int Manage( vout_thread_t *p_vout )
         {
             case OPENGL_EFFECT_CUBE:
 #ifdef OPENGL_MORE_EFFECT
-                       case CYLINDER:
-                       case TORUS:
-                       case SPHERE:
-                       case SQUAREXY:
-                       case SQUARER:
-                       case ASINXY:
-                       case ASINR:
-                       case SINEXY:
-                       case SINER:
-#endif            
+            case CYLINDER:
+            case TORUS:
+            case SPHERE:
+            case SQUAREXY:
+            case SQUARER:
+            case ASINXY:
+            case ASINR:
+            case SINEXY:
+            case SINER:
+#endif
                 glEnable( GL_CULL_FACE );
                 break;
 
@@ -645,22 +646,22 @@ static int Manage( vout_thread_t *p_vout )
             glTranslatef( 0.0, 0.0, - 5.0 );
         }
 #ifdef OPENGL_MORE_EFFECT
-               else 
-           {
-               glMatrixMode( GL_PROJECTION );
-               glLoadIdentity();
-               glFrustum( -1.0, 1.0, -1.0, 1.0, 3.0, 20.0 );
-               glMatrixMode( GL_MODELVIEW );
-               glLoadIdentity();
-               glTranslatef( 0.0, 0.0, -3.0 );
-       
-                       float f_pov_x, f_pov_y, f_pov_z;
-                       f_pov_x = var_CreateGetFloat( p_vout, "opengl-pov-x");
-                       f_pov_y = var_CreateGetFloat( p_vout, "opengl-pov-y");
-                       f_pov_z = var_CreateGetFloat( p_vout, "opengl-pov-z");
-                       gluLookAt(0, 0, 0, f_pov_x, f_pov_y, f_pov_z, 0, 1, 0);
-           }
-#endif        
+        else
+        {
+            glMatrixMode( GL_PROJECTION );
+            glLoadIdentity();
+            glFrustum( -1.0, 1.0, -1.0, 1.0, 3.0, 20.0 );
+            glMatrixMode( GL_MODELVIEW );
+            glLoadIdentity();
+            glTranslatef( 0.0, 0.0, -3.0 );
+            float f_pov_x, f_pov_y, f_pov_z;
+            f_pov_x = var_CreateGetFloat( p_vout, "opengl-pov-x");
+            f_pov_y = var_CreateGetFloat( p_vout, "opengl-pov-y");
+            f_pov_z = var_CreateGetFloat( p_vout, "opengl-pov-z");
+            gluLookAt(0, 0, 0, f_pov_x, f_pov_y, f_pov_z, 0, 1, 0);
+        }
+#endif
     }
 
     if( p_sys->p_vout->pf_unlock )
@@ -668,7 +669,13 @@ static int Manage( vout_thread_t *p_vout )
         p_sys->p_vout->pf_unlock( p_sys->p_vout );
     }
 #endif
-
+// to align in real time in OPENGL
+    if (p_sys->p_vout->i_alignment != p_vout->i_alignment)
+    {
+        p_vout->i_changes = VOUT_CROP_CHANGE;        //to force change
+        p_sys->p_vout->i_alignment = p_vout->i_alignment;    
+    }
+    
     return i_ret;
 }
 
@@ -741,107 +748,106 @@ static void Render( vout_thread_t *p_vout, picture_t *p_pic )
 /*****************************************************************************
  *   Transform: Calculate the distorted grid coordinates
  *****************************************************************************/
-void Transform(float p, int distortion, float width, float height,int i, int j, int i_visible_width, int i_visible_height, double *ix,double *iy)
+static void Transform(float p, int distortion, float width, float height,int i, int j, int i_visible_width, int i_visible_height, double *ix,double *iy)
 {
-   double x,y,xnew,ynew;
-   double r,theta,rnew,thetanew;
+    double x,y,xnew,ynew;
+    double r,theta,rnew,thetanew;
 
-   x = (double)i * (width / ((double)i_visible_width));
-   y = (double)j * (height / ((double)i_visible_height));
+    x = (double)i * (width / ((double)i_visible_width));
+    y = (double)j * (height / ((double)i_visible_height));
 
-   x = (2.0 * (double)x / width) - 1;
-   y = (2.0 * (double)y / height) - 1;
-   xnew = x;
-   ynew = y;
-   r = sqrt(x*x+y*y);
-   theta = atan2(y,x);
+    x = (2.0 * (double)x / width) - 1;
+    y = (2.0 * (double)y / height) - 1;
+    xnew = x;
+    ynew = y;
+    r = sqrt(x*x+y*y);
+    theta = atan2(y,x);
 
-   switch (distortion) 
-   {
+    switch (distortion)
+    {
 /* GRID2D TRANSFORMATION */
-          case SINEXY:
-                 xnew = sin(PID2*x);
-                 ynew = sin(PID2*y);
-                 break;
-          case SINER:
-                 rnew = sin(PID2*r);
-                 thetanew = theta;
-                 xnew = rnew * cos(thetanew);
-                 ynew = rnew * sin(thetanew);
-                 break;
-          case SQUAREXY:
-                 xnew = x*x*SIGN(x);
-                 ynew = y*y*SIGN(y);
-                 break;
-          case SQUARER:
-                 rnew = r*r;
-                 thetanew = theta;
-                 xnew = rnew * cos(thetanew);
-                 ynew = rnew * sin(thetanew);
-                 break;
-          case ASINXY:
-                 xnew = asin(x) / PID2;
-                 ynew = asin(y) / PID2;
-                 break;
-          case ASINR:
-                 rnew = asin(r) / PID2;
-                 thetanew = theta;
-                 xnew = rnew * cos(thetanew);
-                 ynew = rnew * sin(thetanew);
-                 break;
+        case SINEXY:
+            xnew = sin(PID2*x);
+            ynew = sin(PID2*y);
+            break;
+        case SINER:
+            rnew = sin(PID2*r);
+            thetanew = theta;
+            xnew = rnew * cos(thetanew);
+            ynew = rnew * sin(thetanew);
+            break;
+        case SQUAREXY:
+            xnew = x*x*SIGN(x);
+            ynew = y*y*SIGN(y);
+            break;
+        case SQUARER:
+            rnew = r*r;
+            thetanew = theta;
+            xnew = rnew * cos(thetanew);
+            ynew = rnew * sin(thetanew);
+            break;
+        case ASINXY:
+            xnew = asin(x) / PID2;
+            ynew = asin(y) / PID2;
+            break;
+        case ASINR:
+            rnew = asin(r) / PID2;
+            thetanew = theta;
+            xnew = rnew * cos(thetanew);
+            ynew = rnew * sin(thetanew);
+            break;
 /* OTHER WAY: 3D MODEL */
-          default:
-                 xnew = x;
-                 ynew = y;
-   }
+        default:
+            xnew = x;
+            ynew = y;
+    }
 
-   *ix = width * (xnew + 1) / (2.0);
-   *iy = height * (ynew + 1) / (2.0);
+    *ix = width * (xnew + 1) / (2.0);
+    *iy = height * (ynew + 1) / (2.0);
 }
 
-
 /*****************************************************************************
  *   Z_Compute: Calculate the Z-coordinate
  *****************************************************************************/
-float Z_Compute(float p, int distortion, float x, float y)
+static float Z_Compute(float p, int distortion, float x, float y)
 {
-  float f_z = 0.0;
-  double d_p = p / 100.0;
+    float f_z = 0.0;
+    double d_p = p / 100.0;
 
-  switch (distortion) 
-   {
+    switch (distortion)
+    {
 /* 3D MODEL */
-          case CYLINDER:
-                 if (d_p > 0) 
-                       f_z = (1 - d_p * d_p) / (2 * d_p) - sqrt(fabs((d_p * d_p + 1) / (2 * d_p) * (d_p * d_p + 1) / (2 * d_p) - x * x));
-                 else
-                       f_z = (1 - d_p * d_p) / (2 * d_p) + d_p + sqrt(fabs((d_p * d_p + 1) / (2 * d_p) * (d_p * d_p + 1) / (2 * d_p) - x * x));
-                 break;
-          case TORUS:
-                 if (d_p > 0) 
-                   f_z =  (1 - d_p * d_p) / (d_p) - sqrt(fabs((d_p * d_p + 1) / (2 * d_p) * (d_p * d_p + 1) / (2 * d_p) - x * x)) - sqrt(fabs((d_p * d_p + 1) / (2 * d_p) * (d_p * d_p + 1) / (2 * d_p) - y * y));
-                 else
-                       f_z =  (1 - d_p * d_p) / (d_p) + 2 * d_p + sqrt(fabs((d_p * d_p + 1) / (2 * d_p) * (d_p * d_p + 1) / (2 * d_p) - x * x)) + sqrt(fabs((d_p * d_p + 1) / (2 * d_p) * (d_p * d_p + 1) / (2 * d_p) - y * y));
-                 break;
-          case SPHERE:
-                 if (d_p > 0) 
-                   f_z = (1 - d_p * d_p) / (2 * d_p) - sqrt(fabs((d_p * d_p + 1) / (2 * d_p) * (d_p * d_p + 1) / (2 * d_p) - x * x - y * y));
-                 else
-                       f_z = (1 - d_p * d_p) / (2 * d_p) + d_p + sqrt(fabs((d_p * d_p + 1) / (2 * d_p) * (d_p * d_p + 1) / (2 * d_p) - x * x - y * y));
-                 break;
+        case CYLINDER:
+            if (d_p > 0)
+                f_z = (1 - d_p * d_p) / (2 * d_p) - sqrt(fabs((d_p * d_p + 1) / (2 * d_p) * (d_p * d_p + 1) / (2 * d_p) - x * x));
+            else
+                f_z = (1 - d_p * d_p) / (2 * d_p) + d_p + sqrt(fabs((d_p * d_p + 1) / (2 * d_p) * (d_p * d_p + 1) / (2 * d_p) - x * x));
+            break;
+        case TORUS:
+            if (d_p > 0)
+                f_z =  (1 - d_p * d_p) / (d_p) - sqrt(fabs((d_p * d_p + 1) / (2 * d_p) * (d_p * d_p + 1) / (2 * d_p) - x * x)) - sqrt(fabs((d_p * d_p + 1) / (2 * d_p) * (d_p * d_p + 1) / (2 * d_p) - y * y));
+            else
+                f_z =  (1 - d_p * d_p) / (d_p) + 2 * d_p + sqrt(fabs((d_p * d_p + 1) / (2 * d_p) * (d_p * d_p + 1) / (2 * d_p) - x * x)) + sqrt(fabs((d_p * d_p + 1) / (2 * d_p) * (d_p * d_p + 1) / (2 * d_p) - y * y));
+            break;
+        case SPHERE:
+            if (d_p > 0)
+                f_z = (1 - d_p * d_p) / (2 * d_p) - sqrt(fabs((d_p * d_p + 1) / (2 * d_p) * (d_p * d_p + 1) / (2 * d_p) - x * x - y * y));
+            else
+                f_z = (1 - d_p * d_p) / (2 * d_p) + d_p + sqrt(fabs((d_p * d_p + 1) / (2 * d_p) * (d_p * d_p + 1) / (2 * d_p) - x * x - y * y));
+            break;
 /* OTHER WAY: GRID2D TRANSFORMATION */
-          case SINEXY:;
-          case SINER:
-          case SQUAREXY:
-          case SQUARER:;
-          case ASINXY:
-          case ASINR:
-                 f_z = 0.0;
-                 break;
-          default:
-                  f_z = 0.0;
-   }
-  return f_z;
+        case SINEXY:;
+        case SINER:
+        case SQUAREXY:
+        case SQUARER:;
+        case ASINXY:
+        case ASINR:
+            f_z = 0.0;
+            break;
+        default:
+            f_z = 0.0;
+    }
+    return f_z;
 }
 #endif
 
@@ -897,55 +903,55 @@ static void DisplayVideo( vout_thread_t *p_vout, picture_t *p_pic )
     }
     else
 #ifdef OPENGL_MORE_EFFECT
-               if ((p_sys->i_effect > OPENGL_EFFECT_TRANSPARENT_CUBE) || 
-                       ((p_sys->i_effect == OPENGL_EFFECT_NONE)))
-               {
-                  unsigned int i_i, i_j;
-                  unsigned int i_accuracy  = config_GetInt( p_vout, "opengl-accuracy");
-                  unsigned int i_n = pow(2, i_accuracy);       
-                  unsigned int i_n_x = (p_vout->fmt_out.i_visible_width / (i_n * 2));
-                  unsigned int i_n_y = (p_vout->fmt_out.i_visible_height / i_n);
-                  double d_x, d_y;
-                  int i_distortion = p_sys->i_effect;
-                  float f_p = p_sys->f_radius; 
-                
-                  glEnable( VLCGL_TARGET );
-                  glBegin(GL_QUADS);                                                              
-                  for (i_i = 0; i_i < p_vout->fmt_out.i_visible_width; i_i += i_n_x) 
-                  {
-                         if ( i_i == i_n_x * i_n / 2) i_n_x += p_vout->fmt_out.i_visible_width % i_n;
-                         if ((i_i == (p_vout->fmt_out.i_visible_width / i_n) * i_n / 2 + i_n_x) &&
-                                 (p_vout->fmt_out.i_visible_width / i_n != i_n_x))
-                                       i_n_x -= p_vout->fmt_out.i_visible_width % i_n; 
-       
-                         int i_m;
-                         int i_index_max = 0;
-                                       
-                         for (i_j = 0; i_j < p_vout->fmt_out.i_visible_height; i_j += i_n_y) 
-                         {
-                               if ( i_j == i_n_y * i_n / 2) i_n_y += p_vout->fmt_out.i_visible_height % i_n;
-                               if ((i_j == (p_vout->fmt_out.i_visible_height / i_n) * i_n / 2 + i_n_y) &&
-                                       (p_vout->fmt_out.i_visible_height / i_n != i_n_y))
-                                               i_n_y -= p_vout->fmt_out.i_visible_height % i_n;
-
-                               for (i_m = i_index_max; i_m < i_index_max + 4; i_m++)
-                               {
-                                       int i_k = ((i_m % 4) == 1) || ((i_m % 4) == 2);
-                                       int i_l = ((i_m % 4) == 2) || ((i_m % 4) == 3);
-
-                                       Transform(f_p, i_distortion, f_width, f_height, i_i + i_k * i_n_x, i_j + i_l * i_n_y, p_vout->fmt_out.i_visible_width, p_vout->fmt_out.i_visible_height, &d_x, &d_y);                                                           
-                                       glTexCoord2f(f_x + d_x, f_y + d_y);
-                                       d_x =  - 1.0 + 2.0 * ((double)(i_k * i_n_x + i_i) / (double)p_vout->fmt_out.i_visible_width);
-                                       d_y =    1.0 - 2.0 * (((double)i_l * i_n_y + i_j) / (double)p_vout->fmt_out.i_visible_height);
-                                       glVertex3f((float)d_x, (float)d_y, Z_Compute(f_p, i_distortion, (float)d_x, (float)d_y));       
-                               }
-                         }
-                  } 
-                  glEnd();
-               }
-               else
+    if ((p_sys->i_effect > OPENGL_EFFECT_TRANSPARENT_CUBE) ||
+        ((p_sys->i_effect == OPENGL_EFFECT_NONE)))
+    {
+       unsigned int i_i, i_j;
+       unsigned int i_accuracy  = config_GetInt( p_vout, "opengl-accuracy");
+       unsigned int i_n = pow(2, i_accuracy);
+       unsigned int i_n_x = (p_vout->fmt_out.i_visible_width / (i_n * 2));
+       unsigned int i_n_y = (p_vout->fmt_out.i_visible_height / i_n);
+       double d_x, d_y;
+       int i_distortion = p_sys->i_effect;
+       float f_p = p_sys->f_radius;
+       glEnable( VLCGL_TARGET );
+       glBegin(GL_QUADS);
+       for (i_i = 0; i_i < p_vout->fmt_out.i_visible_width; i_i += i_n_x)
+       {
+          if ( i_i == i_n_x * i_n / 2) i_n_x += p_vout->fmt_out.i_visible_width % i_n;
+          if ((i_i == (p_vout->fmt_out.i_visible_width / i_n) * i_n / 2 + i_n_x) &&
+              (p_vout->fmt_out.i_visible_width / i_n != i_n_x))
+                i_n_x -= p_vout->fmt_out.i_visible_width % i_n;
+
+          int i_m;
+          int i_index_max = 0;
+          for (i_j = 0; i_j < p_vout->fmt_out.i_visible_height; i_j += i_n_y)
+          {
+            if ( i_j == i_n_y * i_n / 2) i_n_y += p_vout->fmt_out.i_visible_height % i_n;
+            if ((i_j == (p_vout->fmt_out.i_visible_height / i_n) * i_n / 2 + i_n_y) &&
+                (p_vout->fmt_out.i_visible_height / i_n != i_n_y))
+                    i_n_y -= p_vout->fmt_out.i_visible_height % i_n;
+
+            for (i_m = i_index_max; i_m < i_index_max + 4; i_m++)
+            {
+                int i_k = ((i_m % 4) == 1) || ((i_m % 4) == 2);
+                int i_l = ((i_m % 4) == 2) || ((i_m % 4) == 3);
+
+                Transform(f_p, i_distortion, f_width, f_height, i_i + i_k * i_n_x, i_j + i_l * i_n_y, p_vout->fmt_out.i_visible_width, p_vout->fmt_out.i_visible_height, &d_x, &d_y);
+                glTexCoord2f(f_x + d_x, f_y + d_y);
+                d_x =  - 1.0 + 2.0 * ((double)(i_k * i_n_x + i_i) / (double)p_vout->fmt_out.i_visible_width);
+                d_y =    1.0 - 2.0 * (((double)i_l * i_n_y + i_j) / (double)p_vout->fmt_out.i_visible_height);
+                glVertex3f((float)d_x, (float)d_y, Z_Compute(f_p, i_distortion, (float)d_x, (float)d_y));
+            }
+          }
+       }
+       glEnd();
+    }
+    else
 #endif
-       {
+    {
         glRotatef( 0.5 * p_sys->f_speed , 0.3, 0.5, 0.7 );
 
         glEnable( VLCGL_TARGET );