aboutsummaryrefslogtreecommitdiffhomepage
path: root/libvo/vo_gl2.c
blob: e72f735bcde8d2956b4860af7d424efb1737a9f0 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
/*
 * X11/OpenGL interface
 * based on video_out_x11 by Aaron Holtzman,
 * and WS opengl window manager by Pontscho/Fresh!
 *
 * This file is part of MPlayer.
 *
 * MPlayer 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.
 *
 * MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "config.h"
#include "mp_msg.h"
#include "subopt-helper.h"
#include "video_out.h"
#include "video_out_internal.h"
#include "sub.h"

#include "gl_common.h"
#include "aspect.h"

#undef TEXTUREFORMAT_ALWAYS
#ifdef __APPLE__
#define TEXTUREFORMAT_ALWAYS GL_RGBA8
#endif

//! force texture height, useful for debugging
#define TEXTURE_HEIGHT 128
#undef TEXTURE_HEIGHT
//! force texture width, useful for debugging
#define TEXTURE_WIDTH 128
#undef TEXTURE_WIDTH

static const vo_info_t info =
{
  "X11 (OpenGL) - multiple textures version",
  "gl2",
  "Arpad Gereoffy & Sven Goethel",
  ""
};

const LIBVO_EXTERN(gl2)

/* local data */
static unsigned char *ImageData=NULL;

#ifdef GL_WIN32
    static int gl_vinfo = 0;
    static HGLRC gl_context = 0;
#define update_xinerama_info w32_update_xinerama_info
#define vo_init vo_w32_init
#define vo_window vo_w32_window
#else
    static XVisualInfo *gl_vinfo = NULL;
    static GLXContext gl_context = 0;
#endif

static uint32_t image_width;
static uint32_t image_height;
static uint32_t image_format;
static uint32_t image_bpp;
static uint32_t image_bytes;

static int int_pause;

static uint32_t texture_width;
static uint32_t texture_height;
static int texnumx, texnumy, raw_line_len;
static int texdirty;
static struct TexSquare * texgrid = NULL;
static GLuint   fragprog;
static GLuint   lookupTex;
static GLint    gl_internal_format;
static int      rgb_sz, r_sz, g_sz, b_sz, a_sz;
static GLenum   gl_bitmap_format;
static GLenum   gl_bitmap_type;
static int      isGL12 = GL_FALSE;

static int      gl_bilinear=1;
static int      gl_antialias=0;
static int      use_yuv;
static int      use_glFinish;

static void (*draw_alpha_fnc)
                 (int x0,int y0, int w,int h, unsigned char* src, unsigned char *srca, int stride);


/* The squares that are tiled to make up the game screen polygon */

struct TexSquare
{
  GLubyte *texture;
  GLuint texobj;
  GLuint uvtexobjs[2];
  GLfloat fx, fy, fw, fh;
};

static GLint getInternalFormat(void)
{
#ifdef GL_WIN32
  PIXELFORMATDESCRIPTOR pfd;
  HDC vo_hdc = GetDC(vo_w32_window);
  int pf = GetPixelFormat(vo_hdc);
  if (!DescribePixelFormat(vo_hdc, pf, sizeof pfd, &pfd)) {
    r_sz = g_sz = b_sz = a_sz = 0;
  } else {
    r_sz = pfd.cRedBits;
    g_sz = pfd.cGreenBits;
    b_sz = pfd.cBlueBits;
    a_sz = pfd.cAlphaBits;
  }
  ReleaseDC(vo_w32_window, vo_hdc);
#else
  if (glXGetConfig(mDisplay, gl_vinfo, GLX_RED_SIZE, &r_sz) != 0) r_sz = 0;
  if (glXGetConfig(mDisplay, gl_vinfo, GLX_GREEN_SIZE, &g_sz) != 0) g_sz = 0;
  if (glXGetConfig(mDisplay, gl_vinfo, GLX_BLUE_SIZE, &b_sz) != 0) b_sz = 0;
  if (glXGetConfig(mDisplay, gl_vinfo, GLX_ALPHA_SIZE, &a_sz) != 0) a_sz = 0;
#endif

  rgb_sz=r_sz+g_sz+b_sz;
  if(rgb_sz<=0) rgb_sz=24;

#ifdef TEXTUREFORMAT_ALWAYS
  return TEXTUREFORMAT_ALWAYS;
#else
  if(r_sz==3 && g_sz==3 && b_sz==2 && a_sz==0)
    return GL_R3_G3_B2;
  if(r_sz==4 && g_sz==4 && b_sz==4 && a_sz==0)
    return GL_RGB4;
  if(r_sz==5 && g_sz==5 && b_sz==5 && a_sz==0)
    return GL_RGB5;
  if(r_sz==8 && g_sz==8 && b_sz==8 && a_sz==0)
    return GL_RGB8;
  if(r_sz==10 && g_sz==10 && b_sz==10 && a_sz==0)
    return GL_RGB10;
  if(r_sz==2 && g_sz==2 && b_sz==2 && a_sz==2)
    return GL_RGBA2;
  if(r_sz==4 && g_sz==4 && b_sz==4 && a_sz==4)
    return GL_RGBA4;
  if(r_sz==5 && g_sz==5 && b_sz==5 && a_sz==1)
    return GL_RGB5_A1;
  if(r_sz==8 && g_sz==8 && b_sz==8 && a_sz==8)
    return GL_RGBA8;
  if(r_sz==10 && g_sz==10 && b_sz==10 && a_sz==2)
    return GL_RGB10_A2;
#endif
  return GL_RGB;
}

static int initTextures(void)
{
  struct TexSquare *tsq=0;
  GLfloat texpercx, texpercy;
  int s;
  int x=0, y=0;
  GLint format=0;

  // textures smaller than 64x64 might not be supported
  s=64;
  while (s<image_width)
    s*=2;
  texture_width=s;

  s=64;
  while (s<image_height)
    s*=2;
  texture_height=s;

  if (image_format != IMGFMT_YV12)
  gl_internal_format = getInternalFormat();

  /* Test the max texture size */
  do {
    glTexImage2D (GL_PROXY_TEXTURE_2D, 0,
                  gl_internal_format,
                  texture_width, texture_height,
                  0, gl_bitmap_format, gl_bitmap_type, NULL);

    glGetTexLevelParameteriv
      (GL_PROXY_TEXTURE_2D, 0, GL_TEXTURE_INTERNAL_FORMAT, &format);

    if (format != gl_internal_format)
    {
      mp_msg (MSGT_VO, MSGL_V, "[gl2] Needed texture [%dx%d] too big, trying ",
              texture_height, texture_width);

      if (texture_width > texture_height)
        texture_width /= 2;
      else
        texture_height /= 2;

      mp_msg (MSGT_VO, MSGL_V, "[%dx%d] !\n", texture_height, texture_width);

      if(texture_width < 64 || texture_height < 64) {
        mp_msg (MSGT_VO, MSGL_FATAL, "[gl2] Give up .. usable texture size not avaiable, or texture config error !\n");
        return -1;
      }
    }
  }
  while (format != gl_internal_format && texture_width > 1 && texture_height > 1);
#ifdef TEXTURE_WIDTH
  texture_width = TEXTURE_WIDTH;
#endif
#ifdef TEXTURE_HEIGHT
  texture_height = TEXTURE_HEIGHT;
#endif

  texnumx = image_width / texture_width;
  if ((image_width % texture_width) > 0)
    texnumx++;

  texnumy = image_height / texture_height;
  if ((image_height % texture_height) > 0)
    texnumy++;

  mp_msg(MSGT_VO, MSGL_V, "[gl2] Creating %dx%d textures of size %dx%d ...\n",
         texnumx, texnumy, texture_width,texture_height);

  /* Allocate the texture memory */

  texpercx = (GLfloat) texture_width / (GLfloat) image_width;
  texpercy = (GLfloat) texture_height / (GLfloat) image_height;

  if (texgrid)
    free(texgrid);
  texgrid = calloc (texnumx * texnumy, sizeof (struct TexSquare));

  raw_line_len = image_width * image_bytes;

  mp_msg (MSGT_VO, MSGL_DBG2, "[gl2] texture-usage %d*width=%d, %d*height=%d\n",
          (int) texnumx, (int) texture_width, (int) texnumy,
          (int) texture_height);

  tsq = texgrid;
  for (y = 0; y < texnumy; y++) {
    for (x = 0; x < texnumx; x++) {
      tsq->fx = x * texpercx;
      tsq->fy = y * texpercy;
      tsq->fw = texpercx;
      tsq->fh = texpercy;

      tsq->texobj=0;
      tsq->uvtexobjs[0] = tsq->uvtexobjs[1] = 0;

      glGenTextures (1, &(tsq->texobj));

      glBindTexture (GL_TEXTURE_2D, tsq->texobj);
      if (image_format == IMGFMT_YV12) {
        glGenTextures(2, tsq->uvtexobjs);
        ActiveTexture(GL_TEXTURE1);
        glBindTexture (GL_TEXTURE_2D, tsq->uvtexobjs[0]);
        ActiveTexture(GL_TEXTURE2);
        glBindTexture (GL_TEXTURE_2D, tsq->uvtexobjs[1]);
        ActiveTexture(GL_TEXTURE0);
      }

      glCreateClearTex(GL_TEXTURE_2D, gl_internal_format, gl_bitmap_format,  gl_bitmap_type, GL_LINEAR,
                       texture_width, texture_height, 0);

      glTexEnvf (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
      if (image_format == IMGFMT_YV12) {
        ActiveTexture(GL_TEXTURE1);
        glCreateClearTex(GL_TEXTURE_2D, gl_internal_format, gl_bitmap_format,  gl_bitmap_type, GL_LINEAR,
                         texture_width / 2, texture_height / 2, 128);
        ActiveTexture(GL_TEXTURE2);
        glCreateClearTex(GL_TEXTURE_2D, gl_internal_format, gl_bitmap_format,  gl_bitmap_type, GL_LINEAR,
                         texture_width / 2, texture_height / 2, 128);
        ActiveTexture(GL_TEXTURE0);
      }

      tsq++;
    }  /* for all texnumx */
  }  /* for all texnumy */

  return 0;
}

static void resetTexturePointers(unsigned char *imageSource)
{
  unsigned char *texdata_start, *line_start;
  struct TexSquare *tsq = texgrid;
  int x=0, y=0;

  line_start = (unsigned char *) imageSource;

  for (y = 0; y < texnumy; y++) {
    texdata_start = line_start;
    for (x = 0; x < texnumx; x++) {
      tsq->texture = texdata_start;
      texdata_start += texture_width * image_bytes;
      tsq++;
    }  /* for all texnumx */
    line_start += texture_height * raw_line_len;
  }  /* for all texnumy */
}

static void gl_set_bilinear (int val)
{
  int x, y;

  if(val>=0)
    gl_bilinear = val;
  else
    gl_bilinear++;

  gl_bilinear=gl_bilinear%2;
  /* no mipmap yet .. */

  for (y = 0; y < texnumy; y++) {
    for (x = 0; x < texnumx; x++) {
      glBindTexture (GL_TEXTURE_2D, texgrid[y * texnumx + x].texobj);

      switch (gl_bilinear) {
        case 0:
          glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
          glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
          mp_msg(MSGT_VO, MSGL_INFO, "[gl2] bilinear off\n");
          break;
        case 1:
          glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
          glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
          mp_msg(MSGT_VO, MSGL_INFO, "[gl2] bilinear linear\n");
          break;
        case 2:
          glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);
          glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR_MIPMAP_NEAREST);
          mp_msg(MSGT_VO, MSGL_INFO, "[gl2] bilinear mipmap nearest\n");
          break;
        case 3:
          glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
          glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR_MIPMAP_LINEAR);
          mp_msg(MSGT_VO, MSGL_INFO, "[gl2] bilinear mipmap linear\n");
          break;
      }
    }
  }
}

static void gl_set_antialias (int val)
{
  gl_antialias=val;

  if (gl_antialias) {
    glShadeModel (GL_SMOOTH);
    glEnable (GL_POLYGON_SMOOTH);
    glEnable (GL_LINE_SMOOTH);
    glEnable (GL_POINT_SMOOTH);
    mp_msg(MSGT_VO, MSGL_INFO, "[gl2] antialiasing on\n");
  } else {
    glShadeModel (GL_FLAT);
    glDisable (GL_POLYGON_SMOOTH);
    glDisable (GL_LINE_SMOOTH);
    glDisable (GL_POINT_SMOOTH);
    mp_msg(MSGT_VO, MSGL_INFO, "[gl2] antialiasing off\n");
  }
}


static void drawTextureDisplay (void)
{
  struct TexSquare *square = texgrid;
  int x, y;

  glColor3f(1.0,1.0,1.0);

  if (image_format == IMGFMT_YV12)
    glEnableYUVConversion(GL_TEXTURE_2D, use_yuv);
  for (y = 0; y < texnumy; y++) {
    int thish = texture_height;
    if (y == texnumy - 1 && image_height % texture_height)
      thish = image_height % texture_height;
    for (x = 0; x < texnumx; x++) {
      int thisw = texture_width;
      if (x == texnumx - 1 && image_width % texture_width)
        thisw = image_width % texture_width;
      glBindTexture (GL_TEXTURE_2D, square->texobj);
      if (image_format == IMGFMT_YV12) {
        ActiveTexture(GL_TEXTURE1);
        glBindTexture (GL_TEXTURE_2D, square->uvtexobjs[0]);
        ActiveTexture(GL_TEXTURE2);
        glBindTexture (GL_TEXTURE_2D, square->uvtexobjs[1]);
        ActiveTexture(GL_TEXTURE0);
      }

      if (texdirty) {
        glUploadTex(GL_TEXTURE_2D, gl_bitmap_format,  gl_bitmap_type,
                    square->texture, image_width * image_bytes,
                    0, 0, thisw, thish, 0);
      }

      glDrawTex(square->fx, square->fy, square->fw, square->fh,
                0, 0, texture_width, texture_height,
                texture_width, texture_height,
                0, image_format == IMGFMT_YV12, 0);
      square++;
    } /* for all texnumx */
  } /* for all texnumy */
  if (image_format == IMGFMT_YV12)
    glDisableYUVConversion(GL_TEXTURE_2D, use_yuv);
  texdirty = 0;
}


static void resize(int x,int y){
  mp_msg(MSGT_VO,MSGL_V,"[gl2] Resize: %dx%d\n",x,y);
  if(aspect_scaling()) {
    glClear(GL_COLOR_BUFFER_BIT);
    aspect(&x, &y, A_WINZOOM);
    panscan_calc_windowed();
    x += vo_panscan_x;
    y += vo_panscan_y;
    glViewport( (vo_dwidth-x)/2, (vo_dheight-y)/2, x, y);
  } else {
    //aspect(x, y, A_NOZOOM);
    if (WinID >= 0) {
      int top = 0, left = 0, w = x, h = y;
      geometry(&top, &left, &w, &h, vo_screenwidth, vo_screenheight);
      glViewport(top, left, w, h);
    } else
      glViewport( 0, 0, x, y );
  }

  glMatrixMode(GL_PROJECTION);
  glLoadIdentity();
  glOrtho (0, 1, 1, 0, -1.0, 1.0);

  glMatrixMode(GL_MODELVIEW);
  glLoadIdentity();
}

static void draw_alpha_32(int x0,int y0, int w,int h, unsigned char* src, unsigned char *srca, int stride){
   vo_draw_alpha_rgb32(w,h,src,srca,stride,ImageData+4*(y0*image_width+x0),4*image_width);
}

static void draw_alpha_24(int x0,int y0, int w,int h, unsigned char* src, unsigned char *srca, int stride){
   vo_draw_alpha_rgb24(w,h,src,srca,stride,ImageData+3*(y0*image_width+x0),3*image_width);
}

static void draw_alpha_16(int x0,int y0, int w,int h, unsigned char* src, unsigned char *srca, int stride){
   vo_draw_alpha_rgb16(w,h,src,srca,stride,ImageData+2*(y0*image_width+x0),2*image_width);
}

static void draw_alpha_15(int x0,int y0, int w,int h, unsigned char* src, unsigned char *srca, int stride){
   vo_draw_alpha_rgb15(w,h,src,srca,stride,ImageData+2*(y0*image_width+x0),2*image_width);
}

static void draw_alpha_null(int x0,int y0, int w,int h, unsigned char* src, unsigned char *srca, int stride){
}

#ifdef GL_WIN32

static int config_w32(uint32_t width, uint32_t height, uint32_t d_width, uint32_t d_height, uint32_t flags, char *title, uint32_t format) {
  if (!vo_w32_config(d_width, d_height, flags))
    return -1;

  return 0;
}

#else

static int choose_glx_visual(Display *dpy, int scr, XVisualInfo *res_vi)
{
  XVisualInfo template, *vi_list;
  int vi_num, i, best_i, best_weight;

  template.screen = scr;
  vi_list = XGetVisualInfo(dpy, VisualScreenMask, &template, &vi_num);
  if (!vi_list) return -1;
  best_weight = 1000000; best_i=0;
  for (i = 0; i < vi_num; i++) {
    int val, res, w = 0;
    /* of course, the visual must support OpenGL rendering... */
    res = glXGetConfig(dpy, vi_list + i, GLX_USE_GL, &val);
    if (res || val == False) continue;
    /* also it must be doublebuffered ... */
    res = glXGetConfig(dpy, vi_list + i, GLX_DOUBLEBUFFER, &val);
    if (res || val == False) continue;
    /* furthermore it must be RGBA (not color indexed) ... */
    res = glXGetConfig(dpy, vi_list + i, GLX_RGBA, &val);
    if (res || val == False) continue;
    /* prefer less depth buffer size, */
    res = glXGetConfig(dpy, vi_list + i, GLX_DEPTH_SIZE, &val);
    if (res) continue;
    w += val*2;
    /* stencil buffer size */
    res = glXGetConfig(dpy, vi_list + i, GLX_STENCIL_SIZE, &val);
    if (res) continue;
    w += val*2;
    /* and colorbuffer alpha size */
    res = glXGetConfig(dpy, vi_list + i, GLX_ALPHA_SIZE, &val);
    if (res) continue;
    w += val;
    /* and finally, prefer DirectColor-ed visuals to allow color corrections */
    if (vi_list[i].class != DirectColor) w += 100;

    // avoid bad-looking visual with less that 8bit per color
    res = glXGetConfig(dpy, vi_list + i, GLX_RED_SIZE, &val);
    if (res) continue;
    if (val < 8) w += 50;
    res = glXGetConfig(dpy, vi_list + i, GLX_GREEN_SIZE, &val);
    if (res) continue;
    if (val < 8) w += 70;
    res = glXGetConfig(dpy, vi_list + i, GLX_BLUE_SIZE, &val);
    if (res) continue;
    if (val < 8) w += 50;

    if (w < best_weight) {
      best_weight = w;
      best_i = i;
    }
  }
  if (best_weight < 1000000) *res_vi = vi_list[best_i];
  XFree(vi_list);
  return (best_weight < 1000000) ? 0 : -1;
}

static int config_glx(uint32_t width, uint32_t height, uint32_t d_width, uint32_t d_height, uint32_t flags, char *title, uint32_t format) {
  XVisualInfo *vinfo, vinfo_buf;
    vinfo = choose_glx_visual(mDisplay,mScreen,&vinfo_buf) < 0 ? NULL : &vinfo_buf;
    if (vinfo == NULL) {
      mp_msg(MSGT_VO, MSGL_FATAL, "[gl2] no GLX support present\n");
      return -1;
    }

  vo_x11_create_vo_window(vinfo, vo_dx, vo_dy, d_width, d_height,
          flags, vo_x11_create_colormap(vinfo), "gl2", title);

  return 0;
}
#endif

static int initGl(uint32_t d_width, uint32_t d_height)
{
  fragprog = lookupTex = 0;
  if (initTextures() < 0)
    return -1;

  glDisable(GL_BLEND);
  glDisable(GL_DEPTH_TEST);
  glDepthMask(GL_FALSE);
  glDisable(GL_CULL_FACE);
  glEnable (GL_TEXTURE_2D);
  if (image_format == IMGFMT_YV12) {
    gl_conversion_params_t params = {GL_TEXTURE_2D, use_yuv,
          0.0, 1.0, 0.0, 1.0, 1.0, 1.0, 1.0,
          texture_width, texture_height};
    switch (use_yuv) {
      case YUV_CONVERSION_FRAGMENT_LOOKUP:
        glGenTextures(1, &lookupTex);
        ActiveTexture(GL_TEXTURE3);
        glBindTexture(GL_TEXTURE_2D, lookupTex);
        ActiveTexture(GL_TEXTURE0);
        glBindTexture(GL_TEXTURE_2D, 0);
      case YUV_CONVERSION_FRAGMENT_POW:
      case YUV_CONVERSION_FRAGMENT:
        if (!GenPrograms || !BindProgram) {
          mp_msg(MSGT_VO, MSGL_ERR, "[gl] fragment program functions missing!\n");
          break;
        }
        GenPrograms(1, &fragprog);
        BindProgram(GL_FRAGMENT_PROGRAM, fragprog);
        break;
    }
    glSetupYUVConversion(&params);
  }

  gl_set_antialias(0);
  gl_set_bilinear(1);

  mp_msg(MSGT_VO, MSGL_V, "[gl2] Using image_bpp=%d, image_bytes=%d, \n\tgl_bitmap_format=%s, gl_bitmap_type=%s, \n\trgb_size=%d (%d,%d,%d), a_sz=%d, \n\tgl_internal_format=%s\n",
        image_bpp, image_bytes,
        glValName(gl_bitmap_format), glValName(gl_bitmap_type),
        rgb_sz, r_sz, g_sz, b_sz, a_sz, glValName(gl_internal_format));

  resize(d_width, d_height);

  glClearColor( 0.0f,0.0f,0.0f,0.0f );
  glClear( GL_COLOR_BUFFER_BIT );

  drawTextureDisplay ();

  return 0;
}

/* connect to server, create and map window,
 * allocate colors and (shared) memory
 */
static int
config(uint32_t width, uint32_t height, uint32_t d_width, uint32_t d_height, uint32_t flags, char *title, uint32_t format)
{
  const unsigned char * glVersion;

  image_height = height;
  image_width = width;
  image_format = format;

#ifdef GL_WIN32
  if (config_w32(width, height, d_width, d_height, flags, title, format) == -1)
#else
  if (config_glx(width, height, d_width, d_height, flags, title, format) == -1)
#endif
    return -1;

  if (setGlWindow(&gl_vinfo, &gl_context, vo_window) == SET_WINDOW_FAILED)
    return -1;

  glVersion = glGetString(GL_VERSION);

  mp_msg(MSGT_VO, MSGL_V, "[gl2] OpenGL Driver Information:\n");
  mp_msg(MSGT_VO, MSGL_V, "\tvendor: %s,\n\trenderer %s,\n\tversion %s\n",
         glGetString(GL_VENDOR), glGetString(GL_RENDERER), glVersion);

  if(glVersion[0]>'1' || (glVersion[0]=='1' && glVersion[2]>='2') )
    isGL12 = GL_TRUE;
  else
    isGL12 = GL_FALSE;

  if(isGL12) {
    mp_msg(MSGT_VO, MSGL_INFO, "[gl2] You have OpenGL >= 1.2 capable drivers, GOOD (16bpp and BGR is ok!)\n");
  } else {
    mp_msg(MSGT_VO, MSGL_INFO, "[gl2] You have OpenGL < 1.2 drivers, BAD (16bpp and BGR may be damaged!)\n");
  }

  glFindFormat(format, &image_bpp, &gl_internal_format, &gl_bitmap_format, &gl_bitmap_type);

  image_bytes=(image_bpp+7)/8;

  draw_alpha_fnc=draw_alpha_null;

  switch(image_bpp) {
    case 15:
      draw_alpha_fnc=draw_alpha_15; break;
    case 16:
      draw_alpha_fnc=draw_alpha_16; break;
    case 24:
      draw_alpha_fnc=draw_alpha_24; break;
    case 32:
      draw_alpha_fnc=draw_alpha_32; break;
  }

  if (initGl(vo_dwidth, vo_dheight) == -1)
    return -1;

  return 0;
}

#ifndef GL_WIN32
static int gl_handlekey(int key)
{
  if(key=='a'||key=='A') {
    gl_set_antialias(!gl_antialias);
    return 0;
  } else if(key=='b'||key=='B') {
    gl_set_bilinear(-1);
    return 0;
  }
  return 1;
}
#endif

static void check_events(void)
{
  int e;
#ifndef GL_WIN32
  XEvent         Event;
  char           buf[100];
  KeySym         keySym;
  int            key;
  static XComposeStatus stat;

  while ( XPending( mDisplay ) ) {
    XNextEvent( mDisplay,&Event );
    if( Event.type == KeyPress ) {
      XLookupString( &Event.xkey,buf,sizeof(buf),&keySym,&stat );
      key = (keySym&0xff00) != 0 ? (keySym&0x00ff) + 256 : keySym;
      if(gl_handlekey(key))
        XPutBackEvent(mDisplay, &Event);
      break;
    } else {
      XPutBackEvent(mDisplay, &Event);
      break;
    }
  }
#endif
  e=vo_check_events();
  if(e&VO_EVENT_RESIZE) resize(vo_dwidth, vo_dheight);
  if(e&VO_EVENT_EXPOSE && int_pause) flip_page();
}

static void draw_osd(void)
{
  if (ImageData)
    vo_draw_text(image_width,image_height,draw_alpha_fnc);
}

static void
flip_page(void)
{
  drawTextureDisplay();

//  glFlush();
  if (use_glFinish)
  glFinish();
  swapGlBuffers();

  if (aspect_scaling()) // Avoid flickering borders in fullscreen mode
    glClear (GL_COLOR_BUFFER_BIT);
}

static int draw_slice(uint8_t *src[], int stride[], int w,int h,int x,int y)
{
  uint8_t *yptr = src[0], *uptr = src[1], *vptr = src[2];
  int ystride = stride[0], ustride = stride[1], vstride = stride[2];
  int rem_h = h;
  struct TexSquare *texline = &texgrid[y / texture_height * texnumx];
  int subtex_y = y % texture_width;
  while (rem_h > 0) {
    int rem_w = w;
    struct TexSquare *tsq = &texline[x / texture_width];
    int subtex_x = x % texture_height;
    int subtex_h = rem_h;
    if (subtex_y + subtex_h > texture_height)
      subtex_h = texture_height - subtex_y;
    while (rem_w > 0) {
      int subtex_w = rem_w;
      if (subtex_x + subtex_w > texture_width)
        subtex_w = texture_width - subtex_x;
      ActiveTexture(GL_TEXTURE0);
      glBindTexture(GL_TEXTURE_2D, tsq->texobj);
      glUploadTex(GL_TEXTURE_2D, gl_bitmap_format,  gl_bitmap_type,
                  yptr, ystride, subtex_x, subtex_y,
                  subtex_w, subtex_h, 0);
      ActiveTexture(GL_TEXTURE1);
      glBindTexture(GL_TEXTURE_2D, tsq->uvtexobjs[0]);
      glUploadTex(GL_TEXTURE_2D, gl_bitmap_format,  gl_bitmap_type,
                  uptr, ustride, subtex_x / 2, subtex_y / 2,
                  subtex_w / 2, subtex_h / 2, 0);
      ActiveTexture(GL_TEXTURE2);
      glBindTexture(GL_TEXTURE_2D, tsq->uvtexobjs[1]);
      glUploadTex(GL_TEXTURE_2D, gl_bitmap_format,  gl_bitmap_type,
                  vptr, vstride, subtex_x / 2, subtex_y / 2,
                  subtex_w / 2, subtex_h / 2, 0);
      subtex_x = 0;
      yptr += subtex_w;
      uptr += subtex_w / 2;
      vptr += subtex_w / 2;
      tsq++;
      rem_w -= subtex_w;
    }
    subtex_y = 0;
    yptr += subtex_h * ystride - w;
    uptr += subtex_h / 2 * ustride - w / 2;
    vptr += subtex_h / 2 * vstride - w / 2;
    texline += texnumx;
    rem_h -= subtex_h;
  }
  ActiveTexture(GL_TEXTURE0);
    return 0;
}

static int
draw_frame(uint8_t *src[])
{
  if (image_format == IMGFMT_YV12) {
    mp_msg(MSGT_VO, MSGL_ERR, "[gl2] error: draw_frame called for YV12!\n");
    return 0;
  }
  ImageData=(unsigned char *)src[0];
  resetTexturePointers(ImageData);
  texdirty = 1;
  return 0;
}

static int
query_format(uint32_t format)
{
  switch(format) {
    case IMGFMT_YV12:
      if (use_yuv)
        return VFCAP_CSP_SUPPORTED | VFCAP_CSP_SUPPORTED_BY_HW | VFCAP_OSD |
               VFCAP_HWSCALE_UP | VFCAP_HWSCALE_DOWN | VFCAP_ACCEPT_STRIDE;
      break;
#ifdef __APPLE__
    case IMGFMT_RGB32:
#else
    case IMGFMT_RGB24:
    case IMGFMT_BGR24:
//    case IMGFMT_RGB32:
//    case IMGFMT_BGR32:
#endif
        return VFCAP_CSP_SUPPORTED | VFCAP_CSP_SUPPORTED_BY_HW | VFCAP_OSD;
  }
  return 0;
}


static void
uninit(void)
{
  if ( !vo_config_count ) return;
  releaseGlContext(&gl_vinfo, &gl_context);
  if (texgrid) {
    free(texgrid);
    texgrid = NULL;
  }
  vo_uninit();
}

static const opt_t subopts[] = {
  {"yuv",          OPT_ARG_INT,  &use_yuv,      (opt_test_f)int_non_neg},
  {"glfinish",     OPT_ARG_BOOL, &use_glFinish, NULL},
  {NULL}
};

static int preinit(const char *arg)
{
  // set defaults
  use_yuv = 0;
  use_glFinish = 1;
  if (subopt_parse(arg, subopts) != 0) {
    mp_msg(MSGT_VO, MSGL_FATAL,
            "\n-vo gl2 command line help:\n"
            "Example: mplayer -vo gl2:noglfinish\n"
            "\nOptions:\n"
            "  noglfinish\n"
            "    Do not call glFinish() before swapping buffers\n"
            "  yuv=<n>\n"
            "    0: use software YUV to RGB conversion.\n"
            "    1: use register combiners (nVidia only, for older cards).\n"
            "    2: use fragment program.\n"
            "    3: use fragment program with gamma correction.\n"
            "    4: use fragment program with gamma correction via lookup.\n"
            "    5: use ATI-specific method (for older cards).\n"
            "\n" );
    return -1;
  }
    if( !vo_init() ) return -1; // Can't open X11
    return 0;
}

static int control(uint32_t request, void *data)
{
  switch (request) {
    case VOCTRL_PAUSE:
    case VOCTRL_RESUME:
      int_pause = (request == VOCTRL_PAUSE);
      return VO_TRUE;
    case VOCTRL_QUERY_FORMAT:
      return query_format(*((uint32_t*)data));
    case VOCTRL_ONTOP:
      vo_gl_ontop();
      return VO_TRUE;
    case VOCTRL_FULLSCREEN:
      vo_fullscreen();
      if (setGlWindow(&gl_vinfo, &gl_context, vo_window) == SET_WINDOW_REINIT)
        initGl(vo_dwidth, vo_dheight);
      resize(vo_dwidth, vo_dheight);
      return VO_TRUE;
    case VOCTRL_BORDER:
      vo_gl_border();
      return VO_TRUE;
    case VOCTRL_GET_PANSCAN:
      return VO_TRUE;
    case VOCTRL_SET_PANSCAN:
      resize(vo_dwidth, vo_dheight);
      return VO_TRUE;
#ifndef GL_WIN32
    case VOCTRL_SET_EQUALIZER:
    {
      struct voctrl_set_equalizer_args *args = data;
      return vo_x11_set_equalizer(args->name, args->value);
    }
    case VOCTRL_GET_EQUALIZER:
    {
      struct voctrl_get_equalizer_args *args = data;
      return vo_x11_get_equalizer(args->name, args->valueptr);
    }
#endif
    case VOCTRL_UPDATE_SCREENINFO:
      update_xinerama_info();
      return VO_TRUE;
  }
  return VO_NOTIMPL;
}