libvo/vo_gl2.c

   1 /*
   2  * X11/OpenGL interface
   3  * based on video_out_x11 by Aaron Holtzman,
   4  * and WS opengl window manager by Pontscho/Fresh!
   5  *
   6  * This file is part of MPlayer.
   7  *
   8  * MPlayer is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * MPlayer is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along
  19  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  20  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  21  */
  22
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <string.h>
  26
  27 #include "config.h"
  28 #include "mp_msg.h"
  29 #include "subopt-helper.h"
  30 #include "video_out.h"
  31 #include "video_out_internal.h"
  32 #include "sub.h"
  33
  34 #include "gl_common.h"
  35 #include "aspect.h"
  36
  37 #undef TEXTUREFORMAT_ALWAYS
  38 #ifdef __APPLE__
  39 #define TEXTUREFORMAT_ALWAYS GL_RGBA8
  40 #endif
  41
  42 //! force texture height, useful for debugging
  43 #define TEXTURE_HEIGHT 128
  44 #undef TEXTURE_HEIGHT
  45 //! force texture width, useful for debugging
  46 #define TEXTURE_WIDTH 128
  47 #undef TEXTURE_WIDTH
  48
  49 static const vo_info_t info =
  50 {
  51   "X11 (OpenGL) - multiple textures version",
  52   "gl2",
  53   "Arpad Gereoffy & Sven Goethel",
  54   ""
  55 };
  56
  57 const LIBVO_EXTERN(gl2)
  58
  59 /* local data */
  60 static unsigned char *ImageData=NULL;
  61
  62 static MPGLContext glctx;
  63
  64 static uint32_t image_width;
  65 static uint32_t image_height;
  66 static uint32_t image_format;
  67 static uint32_t image_bpp;
  68 static uint32_t image_bytes;
  69
  70 static int int_pause;
  71
  72 static uint32_t texture_width;
  73 static uint32_t texture_height;
  74 static int texnumx, texnumy, raw_line_len;
  75 static int texdirty;
  76 static struct TexSquare * texgrid = NULL;
  77 static GLuint   fragprog;
  78 static GLuint   lookupTex;
  79 static GLint    gl_internal_format;
  80 static int      rgb_sz, r_sz, g_sz, b_sz, a_sz;
  81 static GLenum   gl_bitmap_format;
  82 static GLenum   gl_bitmap_type;
  83 static int      isGL12 = GL_FALSE;
  84
  85 static int      gl_bilinear=1;
  86 static int      gl_antialias=0;
  87 static int      use_yuv;
  88 static int      is_yuv;
  89 static int      use_glFinish;
  90
  91 static void (*draw_alpha_fnc)
  92                  (int x0,int y0, int w,int h, unsigned char* src, unsigned char *srca, int stride);
  93
  94
  95 /* The squares that are tiled to make up the game screen polygon */
  96
  97 struct TexSquare
  98 {
  99   GLubyte *texture;
 100   GLuint texobj;
 101   GLuint uvtexobjs[2];
 102   GLfloat fx, fy, fw, fh;
 103 };
 104
 105 static GLint getInternalFormat(void)
 106 {
 107   switch (glctx.type) {
 108 #ifdef CONFIG_GL_WIN32
 109   case GLTYPE_W32:
 110   {
 111   PIXELFORMATDESCRIPTOR pfd;
 112   HDC vo_hdc = vo_w32_get_dc(vo_w32_window);
 113   int pf = GetPixelFormat(vo_hdc);
 114   if (!DescribePixelFormat(vo_hdc, pf, sizeof pfd, &pfd)) {
 115     r_sz = g_sz = b_sz = a_sz = 0;
 116   } else {
 117     r_sz = pfd.cRedBits;
 118     g_sz = pfd.cGreenBits;
 119     b_sz = pfd.cBlueBits;
 120     a_sz = pfd.cAlphaBits;
 121   }
 122   vo_w32_release_dc(vo_w32_window, vo_hdc);
 123   }
 124   break;
 125 #endif
 126 #ifdef CONFIG_GL_X11
 127   case GLTYPE_X11:
 128   if (glXGetConfig(mDisplay, glctx.vinfo.x11, GLX_RED_SIZE, &r_sz) != 0) r_sz = 0;
 129   if (glXGetConfig(mDisplay, glctx.vinfo.x11, GLX_GREEN_SIZE, &g_sz) != 0) g_sz = 0;
 130   if (glXGetConfig(mDisplay, glctx.vinfo.x11, GLX_BLUE_SIZE, &b_sz) != 0) b_sz = 0;
 131   if (glXGetConfig(mDisplay, glctx.vinfo.x11, GLX_ALPHA_SIZE, &a_sz) != 0) a_sz = 0;
 132   break;
 133 #endif
 134   }
 135
 136   rgb_sz=r_sz+g_sz+b_sz;
 137   if(rgb_sz<=0) rgb_sz=24;
 138
 139 #ifdef TEXTUREFORMAT_ALWAYS
 140   return TEXTUREFORMAT_ALWAYS;
 141 #else
 142   if(r_sz==3 && g_sz==3 && b_sz==2 && a_sz==0)
 143     return GL_R3_G3_B2;
 144   if(r_sz==4 && g_sz==4 && b_sz==4 && a_sz==0)
 145     return GL_RGB4;
 146   if(r_sz==5 && g_sz==5 && b_sz==5 && a_sz==0)
 147     return GL_RGB5;
 148   if(r_sz==8 && g_sz==8 && b_sz==8 && a_sz==0)
 149     return GL_RGB8;
 150   if(r_sz==10 && g_sz==10 && b_sz==10 && a_sz==0)
 151     return GL_RGB10;
 152   if(r_sz==2 && g_sz==2 && b_sz==2 && a_sz==2)
 153     return GL_RGBA2;
 154   if(r_sz==4 && g_sz==4 && b_sz==4 && a_sz==4)
 155     return GL_RGBA4;
 156   if(r_sz==5 && g_sz==5 && b_sz==5 && a_sz==1)
 157     return GL_RGB5_A1;
 158   if(r_sz==8 && g_sz==8 && b_sz==8 && a_sz==8)
 159     return GL_RGBA8;
 160   if(r_sz==10 && g_sz==10 && b_sz==10 && a_sz==2)
 161     return GL_RGB10_A2;
 162 #endif
 163   return GL_RGB;
 164 }
 165
 166 static int initTextures(void)
 167 {
 168   struct TexSquare *tsq=0;
 169   GLfloat texpercx, texpercy;
 170   int s;
 171   int x=0, y=0;
 172
 173   // textures smaller than 64x64 might not be supported
 174   s=64;
 175   while (s<image_width)
 176     s*=2;
 177   texture_width=s;
 178
 179   s=64;
 180   while (s<image_height)
 181     s*=2;
 182   texture_height=s;
 183
 184   if (!is_yuv)
 185     gl_internal_format = getInternalFormat();
 186
 187   /* Test the max texture size */
 188   do {
 189     GLint w;
 190     glTexImage2D (GL_PROXY_TEXTURE_2D, 0,
 191                   gl_internal_format,
 192                   texture_width, texture_height,
 193                   0, gl_bitmap_format, gl_bitmap_type, NULL);
 194
 195     glGetTexLevelParameteriv
 196       (GL_PROXY_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &w);
 197
 198     if (w >= texture_width)
 199       break;
 200
 201     mp_msg (MSGT_VO, MSGL_V, "[gl2] Needed texture [%dx%d] too big, trying ",
 202             texture_width, texture_height);
 203
 204     if (texture_width > texture_height)
 205       texture_width /= 2;
 206     else
 207       texture_height /= 2;
 208
 209     mp_msg (MSGT_VO, MSGL_V, "[%dx%d] !\n", texture_width, texture_height);
 210
 211     if(texture_width < 64 || texture_height < 64) {
 212       mp_msg (MSGT_VO, MSGL_FATAL, "[gl2] Give up .. usable texture size not available, or texture config error !\n");
 213       return -1;
 214     }
 215   } while (texture_width > 1 && texture_height > 1);
 216 #ifdef TEXTURE_WIDTH
 217   texture_width = TEXTURE_WIDTH;
 218 #endif
 219 #ifdef TEXTURE_HEIGHT
 220   texture_height = TEXTURE_HEIGHT;
 221 #endif
 222
 223   texnumx = image_width / texture_width;
 224   if ((image_width % texture_width) > 0)
 225     texnumx++;
 226
 227   texnumy = image_height / texture_height;
 228   if ((image_height % texture_height) > 0)
 229     texnumy++;
 230
 231   mp_msg(MSGT_VO, MSGL_V, "[gl2] Creating %dx%d textures of size %dx%d ...\n",
 232          texnumx, texnumy, texture_width,texture_height);
 233
 234   /* Allocate the texture memory */
 235
 236   texpercx = (GLfloat) texture_width / (GLfloat) image_width;
 237   texpercy = (GLfloat) texture_height / (GLfloat) image_height;
 238
 239   free(texgrid);
 240   texgrid = calloc (texnumx * texnumy, sizeof (struct TexSquare));
 241
 242   raw_line_len = image_width * image_bytes;
 243
 244   mp_msg (MSGT_VO, MSGL_DBG2, "[gl2] texture-usage %d*width=%d, %d*height=%d\n",
 245           (int) texnumx, (int) texture_width, (int) texnumy,
 246           (int) texture_height);
 247
 248   tsq = texgrid;
 249   for (y = 0; y < texnumy; y++) {
 250     for (x = 0; x < texnumx; x++) {
 251       tsq->fx = x * texpercx;
 252       tsq->fy = y * texpercy;
 253       tsq->fw = texpercx;
 254       tsq->fh = texpercy;
 255
 256       tsq->texobj=0;
 257       tsq->uvtexobjs[0] = tsq->uvtexobjs[1] = 0;
 258
 259       glGenTextures (1, &(tsq->texobj));
 260
 261       glBindTexture (GL_TEXTURE_2D, tsq->texobj);
 262       if (is_yuv) {
 263         glGenTextures(2, tsq->uvtexobjs);
 264         mpglActiveTexture(GL_TEXTURE1);
 265         glBindTexture (GL_TEXTURE_2D, tsq->uvtexobjs[0]);
 266         mpglActiveTexture(GL_TEXTURE2);
 267         glBindTexture (GL_TEXTURE_2D, tsq->uvtexobjs[1]);
 268         mpglActiveTexture(GL_TEXTURE0);
 269       }
 270
 271       glCreateClearTex(GL_TEXTURE_2D, gl_internal_format, gl_bitmap_format,  gl_bitmap_type, GL_LINEAR,
 272                        texture_width, texture_height, 0);
 273
 274       glTexEnvf (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
 275       if (is_yuv) {
 276         int xs, ys;
 277         mp_get_chroma_shift(image_format, &xs, &ys);
 278         mpglActiveTexture(GL_TEXTURE1);
 279         glCreateClearTex(GL_TEXTURE_2D, gl_internal_format, gl_bitmap_format,  gl_bitmap_type, GL_LINEAR,
 280                          texture_width >> xs, texture_height >> ys, 128);
 281         mpglActiveTexture(GL_TEXTURE2);
 282         glCreateClearTex(GL_TEXTURE_2D, gl_internal_format, gl_bitmap_format,  gl_bitmap_type, GL_LINEAR,
 283                          texture_width >> xs, texture_height >> ys, 128);
 284         mpglActiveTexture(GL_TEXTURE0);
 285       }
 286
 287       tsq++;
 288     }  /* for all texnumx */
 289   }  /* for all texnumy */
 290
 291   return 0;
 292 }
 293
 294 static void resetTexturePointers(unsigned char *imageSource)
 295 {
 296   unsigned char *texdata_start, *line_start;
 297   struct TexSquare *tsq = texgrid;
 298   int x=0, y=0;
 299
 300   line_start = (unsigned char *) imageSource;
 301
 302   for (y = 0; y < texnumy; y++) {
 303     texdata_start = line_start;
 304     for (x = 0; x < texnumx; x++) {
 305       tsq->texture = texdata_start;
 306       texdata_start += texture_width * image_bytes;
 307       tsq++;
 308     }  /* for all texnumx */
 309     line_start += texture_height * raw_line_len;
 310   }  /* for all texnumy */
 311 }
 312
 313 static void gl_set_bilinear (int val)
 314 {
 315   int x, y;
 316
 317   if(val>=0)
 318     gl_bilinear = val;
 319   else
 320     gl_bilinear++;
 321
 322   gl_bilinear=gl_bilinear%2;
 323   /* no mipmap yet .. */
 324
 325   for (y = 0; y < texnumy; y++) {
 326     for (x = 0; x < texnumx; x++) {
 327       glBindTexture (GL_TEXTURE_2D, texgrid[y * texnumx + x].texobj);
 328
 329       switch (gl_bilinear) {
 330         case 0:
 331           glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
 332           glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
 333           mp_msg(MSGT_VO, MSGL_INFO, "[gl2] bilinear off\n");
 334           break;
 335         case 1:
 336           glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 337           glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 338           mp_msg(MSGT_VO, MSGL_INFO, "[gl2] bilinear linear\n");
 339           break;
 340         case 2:
 341           glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);
 342           glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR_MIPMAP_NEAREST);
 343           mp_msg(MSGT_VO, MSGL_INFO, "[gl2] bilinear mipmap nearest\n");
 344           break;
 345         case 3:
 346           glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
 347           glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR_MIPMAP_LINEAR);
 348           mp_msg(MSGT_VO, MSGL_INFO, "[gl2] bilinear mipmap linear\n");
 349           break;
 350       }
 351     }
 352   }
 353 }
 354
 355 static void gl_set_antialias (int val)
 356 {
 357   gl_antialias=val;
 358
 359   if (gl_antialias) {
 360     glShadeModel (GL_SMOOTH);
 361     glEnable (GL_POLYGON_SMOOTH);
 362     glEnable (GL_LINE_SMOOTH);
 363     glEnable (GL_POINT_SMOOTH);
 364     mp_msg(MSGT_VO, MSGL_INFO, "[gl2] antialiasing on\n");
 365   } else {
 366     glShadeModel (GL_FLAT);
 367     glDisable (GL_POLYGON_SMOOTH);
 368     glDisable (GL_LINE_SMOOTH);
 369     glDisable (GL_POINT_SMOOTH);
 370     mp_msg(MSGT_VO, MSGL_INFO, "[gl2] antialiasing off\n");
 371   }
 372 }
 373
 374
 375 static void drawTextureDisplay (void)
 376 {
 377   struct TexSquare *square = texgrid;
 378   int x, y;
 379
 380   glColor3f(1.0,1.0,1.0);
 381
 382   if (is_yuv)
 383     glEnableYUVConversion(GL_TEXTURE_2D, use_yuv);
 384   for (y = 0; y < texnumy; y++) {
 385     int thish = texture_height;
 386     if (y == texnumy - 1 && image_height % texture_height)
 387       thish = image_height % texture_height;
 388     for (x = 0; x < texnumx; x++) {
 389       int thisw = texture_width;
 390       if (x == texnumx - 1 && image_width % texture_width)
 391         thisw = image_width % texture_width;
 392       glBindTexture (GL_TEXTURE_2D, square->texobj);
 393       if (is_yuv) {
 394         mpglActiveTexture(GL_TEXTURE1);
 395         glBindTexture (GL_TEXTURE_2D, square->uvtexobjs[0]);
 396         mpglActiveTexture(GL_TEXTURE2);
 397         glBindTexture (GL_TEXTURE_2D, square->uvtexobjs[1]);
 398         mpglActiveTexture(GL_TEXTURE0);
 399       }
 400
 401       if (texdirty) {
 402         glUploadTex(GL_TEXTURE_2D, gl_bitmap_format,  gl_bitmap_type,
 403                     square->texture, image_width * image_bytes,
 404                     0, 0, thisw, thish, 0);
 405       }
 406
 407       glDrawTex(square->fx, square->fy, square->fw, square->fh,
 408                 0, 0, texture_width, texture_height,
 409                 texture_width, texture_height,
 410                 0, is_yuv, 0);
 411       square++;
 412     } /* for all texnumx */
 413   } /* for all texnumy */
 414   if (is_yuv)
 415     glDisableYUVConversion(GL_TEXTURE_2D, use_yuv);
 416   texdirty = 0;
 417 }
 418
 419
 420 static void resize(int x,int y){
 421   mp_msg(MSGT_VO,MSGL_V,"[gl2] Resize: %dx%d\n",x,y);
 422   if(aspect_scaling()) {
 423     glClear(GL_COLOR_BUFFER_BIT);
 424     aspect(&x, &y, A_WINZOOM);
 425     panscan_calc_windowed();
 426     x += vo_panscan_x;
 427     y += vo_panscan_y;
 428     glViewport( (vo_dwidth-x)/2, (vo_dheight-y)/2, x, y);
 429   } else {
 430     //aspect(x, y, A_NOZOOM);
 431     if (WinID >= 0) {
 432       int left = 0, top = 0, w = x, h = y;
 433       geometry(&left, &top, &w, &h, vo_dwidth, vo_dheight);
 434       top = y - h - top;
 435       glViewport(left, top, w, h);
 436     } else
 437       glViewport( 0, 0, x, y );
 438   }
 439
 440   glMatrixMode(GL_PROJECTION);
 441   glLoadIdentity();
 442   glOrtho (0, 1, 1, 0, -1.0, 1.0);
 443
 444   glMatrixMode(GL_MODELVIEW);
 445   glLoadIdentity();
 446 }
 447
 448 static void draw_alpha_32(int x0,int y0, int w,int h, unsigned char* src, unsigned char *srca, int stride){
 449    vo_draw_alpha_rgb32(w,h,src,srca,stride,ImageData+4*(y0*image_width+x0),4*image_width);
 450 }
 451
 452 static void draw_alpha_24(int x0,int y0, int w,int h, unsigned char* src, unsigned char *srca, int stride){
 453    vo_draw_alpha_rgb24(w,h,src,srca,stride,ImageData+3*(y0*image_width+x0),3*image_width);
 454 }
 455
 456 static void draw_alpha_16(int x0,int y0, int w,int h, unsigned char* src, unsigned char *srca, int stride){
 457    vo_draw_alpha_rgb16(w,h,src,srca,stride,ImageData+2*(y0*image_width+x0),2*image_width);
 458 }
 459
 460 static void draw_alpha_15(int x0,int y0, int w,int h, unsigned char* src, unsigned char *srca, int stride){
 461    vo_draw_alpha_rgb15(w,h,src,srca,stride,ImageData+2*(y0*image_width+x0),2*image_width);
 462 }
 463
 464 static void draw_alpha_null(int x0,int y0, int w,int h, unsigned char* src, unsigned char *srca, int stride){
 465 }
 466
 467 #ifdef CONFIG_GL_WIN32
 468
 469 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) {
 470   if (!vo_w32_config(d_width, d_height, flags))
 471     return -1;
 472
 473   return 0;
 474 }
 475
 476 #endif
 477
 478 #ifdef CONFIG_GL_X11
 479 static int choose_glx_visual(Display *dpy, int scr, XVisualInfo *res_vi)
 480 {
 481   XVisualInfo template, *vi_list;
 482   int vi_num, i, best_i, best_weight;
 483
 484   template.screen = scr;
 485   vi_list = XGetVisualInfo(dpy, VisualScreenMask, &template, &vi_num);
 486   if (!vi_list) return -1;
 487   best_weight = 1000000; best_i=0;
 488   for (i = 0; i < vi_num; i++) {
 489     int val, res, w = 0;
 490     /* of course, the visual must support OpenGL rendering... */
 491     res = glXGetConfig(dpy, vi_list + i, GLX_USE_GL, &val);
 492     if (res || val == False) continue;
 493     /* also it must be doublebuffered ... */
 494     res = glXGetConfig(dpy, vi_list + i, GLX_DOUBLEBUFFER, &val);
 495     if (res || val == False) continue;
 496     /* furthermore it must be RGBA (not color indexed) ... */
 497     res = glXGetConfig(dpy, vi_list + i, GLX_RGBA, &val);
 498     if (res || val == False) continue;
 499     /* prefer less depth buffer size, */
 500     res = glXGetConfig(dpy, vi_list + i, GLX_DEPTH_SIZE, &val);
 501     if (res) continue;
 502     w += val*2;
 503     /* stencil buffer size */
 504     res = glXGetConfig(dpy, vi_list + i, GLX_STENCIL_SIZE, &val);
 505     if (res) continue;
 506     w += val*2;
 507     /* and colorbuffer alpha size */
 508     res = glXGetConfig(dpy, vi_list + i, GLX_ALPHA_SIZE, &val);
 509     if (res) continue;
 510     w += val;
 511     /* and finally, prefer DirectColor-ed visuals to allow color corrections */
 512     if (vi_list[i].class != DirectColor) w += 100;
 513
 514     // avoid bad-looking visual with less that 8bit per color
 515     res = glXGetConfig(dpy, vi_list + i, GLX_RED_SIZE, &val);
 516     if (res) continue;
 517     if (val < 8) w += 50;
 518     res = glXGetConfig(dpy, vi_list + i, GLX_GREEN_SIZE, &val);
 519     if (res) continue;
 520     if (val < 8) w += 70;
 521     res = glXGetConfig(dpy, vi_list + i, GLX_BLUE_SIZE, &val);
 522     if (res) continue;
 523     if (val < 8) w += 50;
 524
 525     if (w < best_weight) {
 526       best_weight = w;
 527       best_i = i;
 528     }
 529   }
 530   if (best_weight < 1000000) *res_vi = vi_list[best_i];
 531   XFree(vi_list);
 532   return (best_weight < 1000000) ? 0 : -1;
 533 }
 534
 535 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) {
 536   XVisualInfo *vinfo, vinfo_buf;
 537     vinfo = choose_glx_visual(mDisplay,mScreen,&vinfo_buf) < 0 ? NULL : &vinfo_buf;
 538     if (vinfo == NULL) {
 539       mp_msg(MSGT_VO, MSGL_FATAL, "[gl2] no GLX support present\n");
 540       return -1;
 541     }
 542
 543   vo_x11_create_vo_window(vinfo, vo_dx, vo_dy, d_width, d_height,
 544           flags, vo_x11_create_colormap(vinfo), "gl2", title);
 545
 546   return 0;
 547 }
 548 #endif
 549
 550 static int initGl(uint32_t d_width, uint32_t d_height)
 551 {
 552   fragprog = lookupTex = 0;
 553   if (initTextures() < 0)
 554     return -1;
 555
 556   glDisable(GL_BLEND);
 557   glDisable(GL_DEPTH_TEST);
 558   glDepthMask(GL_FALSE);
 559   glDisable(GL_CULL_FACE);
 560   glEnable (GL_TEXTURE_2D);
 561   if (is_yuv) {
 562     int xs, ys;
 563     gl_conversion_params_t params = {GL_TEXTURE_2D, use_yuv,
 564           {-1, -1, 0.0, 1.0, 0.0, 1.0, 1.0, 1.0, 1.0},
 565           texture_width, texture_height, 0, 0, 0};
 566     switch (use_yuv) {
 567       case YUV_CONVERSION_FRAGMENT_LOOKUP:
 568         glGenTextures(1, &lookupTex);
 569         mpglActiveTexture(GL_TEXTURE3);
 570         glBindTexture(GL_TEXTURE_2D, lookupTex);
 571         mpglActiveTexture(GL_TEXTURE0);
 572         glBindTexture(GL_TEXTURE_2D, 0);
 573       case YUV_CONVERSION_FRAGMENT_POW:
 574       case YUV_CONVERSION_FRAGMENT:
 575         if (!mpglGenPrograms || !mpglBindProgram) {
 576           mp_msg(MSGT_VO, MSGL_ERR, "[gl] fragment program functions missing!\n");
 577           break;
 578         }
 579         mpglGenPrograms(1, &fragprog);
 580         mpglBindProgram(GL_FRAGMENT_PROGRAM, fragprog);
 581         break;
 582     }
 583     mp_get_chroma_shift(image_format, &xs, &ys);
 584     params.chrom_texw = params.texw >> xs;
 585     params.chrom_texh = params.texh >> ys;
 586     glSetupYUVConversion(&params);
 587   }
 588
 589   gl_set_antialias(0);
 590   gl_set_bilinear(1);
 591
 592   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",
 593         image_bpp, image_bytes,
 594         glValName(gl_bitmap_format), glValName(gl_bitmap_type),
 595         rgb_sz, r_sz, g_sz, b_sz, a_sz, glValName(gl_internal_format));
 596
 597   resize(d_width, d_height);
 598
 599   glClearColor( 0.0f,0.0f,0.0f,0.0f );
 600   glClear( GL_COLOR_BUFFER_BIT );
 601
 602   drawTextureDisplay ();
 603
 604   return 0;
 605 }
 606
 607 /* connect to server, create and map window,
 608  * allocate colors and (shared) memory
 609  */
 610 static int
 611 config(uint32_t width, uint32_t height, uint32_t d_width, uint32_t d_height, uint32_t flags, char *title, uint32_t format)
 612 {
 613   int xs, ys;
 614   const unsigned char * glVersion;
 615
 616   image_height = height;
 617   image_width = width;
 618   image_format = format;
 619   is_yuv = mp_get_chroma_shift(image_format, &xs, &ys) > 0;
 620   is_yuv |= (xs << 8) | (ys << 16);
 621
 622 #ifdef CONFIG_GL_WIN32
 623   if (config_w32(width, height, d_width, d_height, flags, title, format) == -1)
 624 #endif
 625 #ifdef CONFIG_GL_X11
 626   if (config_glx(width, height, d_width, d_height, flags, title, format) == -1)
 627 #endif
 628     return -1;
 629
 630   if (glctx.setGlWindow(&glctx) == SET_WINDOW_FAILED)
 631     return -1;
 632
 633   glVersion = glGetString(GL_VERSION);
 634
 635   mp_msg(MSGT_VO, MSGL_V, "[gl2] OpenGL Driver Information:\n");
 636   mp_msg(MSGT_VO, MSGL_V, "\tvendor: %s,\n\trenderer %s,\n\tversion %s\n",
 637          glGetString(GL_VENDOR), glGetString(GL_RENDERER), glVersion);
 638
 639   if(glVersion[0]>'1' || (glVersion[0]=='1' && glVersion[2]>='2') )
 640     isGL12 = GL_TRUE;
 641   else
 642     isGL12 = GL_FALSE;
 643
 644   if(isGL12) {
 645     mp_msg(MSGT_VO, MSGL_INFO, "[gl2] You have OpenGL >= 1.2 capable drivers, GOOD (16bpp and BGR is ok!)\n");
 646   } else {
 647     mp_msg(MSGT_VO, MSGL_INFO, "[gl2] You have OpenGL < 1.2 drivers, BAD (16bpp and BGR may be damaged!)\n");
 648   }
 649
 650   glFindFormat(format, &image_bpp, &gl_internal_format, &gl_bitmap_format, &gl_bitmap_type);
 651
 652   image_bytes=(image_bpp+7)/8;
 653
 654   draw_alpha_fnc=draw_alpha_null;
 655
 656   switch(image_bpp) {
 657     case 15:
 658       draw_alpha_fnc=draw_alpha_15; break;
 659     case 16:
 660       draw_alpha_fnc=draw_alpha_16; break;
 661     case 24:
 662       draw_alpha_fnc=draw_alpha_24; break;
 663     case 32:
 664       draw_alpha_fnc=draw_alpha_32; break;
 665   }
 666
 667   if (initGl(vo_dwidth, vo_dheight) == -1)
 668     return -1;
 669
 670   return 0;
 671 }
 672
 673 #ifdef CONFIG_GL_X11
 674 static int gl_handlekey(int key)
 675 {
 676   if(key=='a'||key=='A') {
 677     gl_set_antialias(!gl_antialias);
 678     return 0;
 679   } else if(key=='b'||key=='B') {
 680     gl_set_bilinear(-1);
 681     return 0;
 682   }
 683   return 1;
 684 }
 685 #endif
 686
 687 static void check_events(void)
 688 {
 689   int e;
 690 #ifdef CONFIG_GL_X11
 691   XEvent         Event;
 692   char           buf[100];
 693   KeySym         keySym;
 694   int            key;
 695   static XComposeStatus stat;
 696
 697   while ( XPending( mDisplay ) ) {
 698     XNextEvent( mDisplay,&Event );
 699     if( Event.type == KeyPress ) {
 700       XLookupString( &Event.xkey,buf,sizeof(buf),&keySym,&stat );
 701       key = (keySym&0xff00) != 0 ? (keySym&0x00ff) + 256 : keySym;
 702       if(gl_handlekey(key))
 703         XPutBackEvent(mDisplay, &Event);
 704       break;
 705     } else {
 706       XPutBackEvent(mDisplay, &Event);
 707       break;
 708     }
 709   }
 710 #endif
 711   e=glctx.check_events();
 712   if(e&VO_EVENT_RESIZE) resize(vo_dwidth, vo_dheight);
 713   if(e&VO_EVENT_EXPOSE && int_pause) flip_page();
 714 }
 715
 716 static void draw_osd(void)
 717 {
 718   if (ImageData)
 719     vo_draw_text(image_width,image_height,draw_alpha_fnc);
 720 }
 721
 722 static void
 723 flip_page(void)
 724 {
 725   drawTextureDisplay();
 726
 727 //  glFlush();
 728   if (use_glFinish)
 729   glFinish();
 730   glctx.swapGlBuffers(&glctx);
 731
 732   if (aspect_scaling()) // Avoid flickering borders in fullscreen mode
 733     glClear (GL_COLOR_BUFFER_BIT);
 734 }
 735
 736 static int draw_slice(uint8_t *src[], int stride[], int w,int h,int x,int y)
 737 {
 738   uint8_t *yptr = src[0], *uptr = src[1], *vptr = src[2];
 739   int ystride = stride[0], ustride = stride[1], vstride = stride[2];
 740   int rem_h = h;
 741   struct TexSquare *texline = &texgrid[y / texture_height * texnumx];
 742   int subtex_y = y % texture_width;
 743   int xs, ys;
 744   mp_get_chroma_shift(image_format, &xs, &ys);
 745   while (rem_h > 0) {
 746     int rem_w = w;
 747     struct TexSquare *tsq = &texline[x / texture_width];
 748     int subtex_x = x % texture_height;
 749     int subtex_h = rem_h;
 750     if (subtex_y + subtex_h > texture_height)
 751       subtex_h = texture_height - subtex_y;
 752     while (rem_w > 0) {
 753       int subtex_w = rem_w;
 754       if (subtex_x + subtex_w > texture_width)
 755         subtex_w = texture_width - subtex_x;
 756       mpglActiveTexture(GL_TEXTURE0);
 757       glBindTexture(GL_TEXTURE_2D, tsq->texobj);
 758       glUploadTex(GL_TEXTURE_2D, gl_bitmap_format,  gl_bitmap_type,
 759                   yptr, ystride, subtex_x, subtex_y,
 760                   subtex_w, subtex_h, 0);
 761       mpglActiveTexture(GL_TEXTURE1);
 762       glBindTexture(GL_TEXTURE_2D, tsq->uvtexobjs[0]);
 763       glUploadTex(GL_TEXTURE_2D, gl_bitmap_format,  gl_bitmap_type,
 764                   uptr, ustride, subtex_x >> xs, subtex_y >> ys,
 765                   subtex_w >> xs, subtex_h >> ys, 0);
 766       mpglActiveTexture(GL_TEXTURE2);
 767       glBindTexture(GL_TEXTURE_2D, tsq->uvtexobjs[1]);
 768       glUploadTex(GL_TEXTURE_2D, gl_bitmap_format,  gl_bitmap_type,
 769                   vptr, vstride, subtex_x >> xs, subtex_y >> ys,
 770                   subtex_w >> xs, subtex_h >> ys, 0);
 771       subtex_x = 0;
 772       yptr += subtex_w;
 773       uptr += subtex_w >> xs;
 774       vptr += subtex_w >> xs;
 775       tsq++;
 776       rem_w -= subtex_w;
 777     }
 778     subtex_y = 0;
 779     yptr += subtex_h * ystride - w;
 780     uptr += (subtex_h >> ys) * ustride - (w >> xs);
 781     vptr += (subtex_h >> ys) * vstride - (w >> xs);
 782     texline += texnumx;
 783     rem_h -= subtex_h;
 784   }
 785   mpglActiveTexture(GL_TEXTURE0);
 786     return 0;
 787 }
 788
 789 static int
 790 draw_frame(uint8_t *src[])
 791 {
 792   if (is_yuv) {
 793     mp_msg(MSGT_VO, MSGL_ERR, "[gl2] error: draw_frame called for YV12!\n");
 794     return 0;
 795   }
 796   ImageData=(unsigned char *)src[0];
 797   resetTexturePointers(ImageData);
 798   texdirty = 1;
 799   return 0;
 800 }
 801
 802 static int
 803 query_format(uint32_t format)
 804 {
 805   if (use_yuv && mp_get_chroma_shift(format, NULL, NULL) &&
 806       (IMGFMT_IS_YUVP16_NE(format) || !IMGFMT_IS_YUVP16(format)))
 807     return VFCAP_CSP_SUPPORTED | VFCAP_CSP_SUPPORTED_BY_HW | VFCAP_OSD |
 808            VFCAP_HWSCALE_UP | VFCAP_HWSCALE_DOWN | VFCAP_ACCEPT_STRIDE;
 809   switch(format) {
 810 #ifdef __APPLE__
 811     case IMGFMT_RGB32:
 812 #else
 813     case IMGFMT_RGB24:
 814     case IMGFMT_BGR24:
 815 //    case IMGFMT_RGB32:
 816 //    case IMGFMT_BGR32:
 817 #endif
 818         return VFCAP_CSP_SUPPORTED | VFCAP_CSP_SUPPORTED_BY_HW | VFCAP_OSD;
 819   }
 820   return 0;
 821 }
 822
 823
 824 static void
 825 uninit(void)
 826 {
 827   if ( !vo_config_count ) return;
 828   free(texgrid);
 829   texgrid = NULL;
 830   uninit_mpglcontext(&glctx);
 831 }
 832
 833 static const opt_t subopts[] = {
 834   {"yuv",          OPT_ARG_INT,  &use_yuv,      int_non_neg},
 835   {"glfinish",     OPT_ARG_BOOL, &use_glFinish, NULL},
 836   {NULL}
 837 };
 838
 839 static int preinit(const char *arg)
 840 {
 841   enum MPGLType gltype = GLTYPE_X11;
 842   // set defaults
 843 #ifdef CONFIG_GL_WIN32
 844   gltype = GLTYPE_W32;
 845 #endif
 846   use_yuv = -1;
 847   use_glFinish = 1;
 848   if (subopt_parse(arg, subopts) != 0) {
 849     mp_msg(MSGT_VO, MSGL_FATAL,
 850             "\n-vo gl2 command line help:\n"
 851             "Example: mplayer -vo gl2:noglfinish\n"
 852             "\nOptions:\n"
 853             "  noglfinish\n"
 854             "    Do not call glFinish() before swapping buffers\n"
 855             "  yuv=<n>\n"
 856             "    0: use software YUV to RGB conversion.\n"
 857             "    1: use register combiners (nVidia only, for older cards).\n"
 858             "    2: use fragment program.\n"
 859             "    3: use fragment program with gamma correction.\n"
 860             "    4: use fragment program with gamma correction via lookup.\n"
 861             "    5: use ATI-specific method (for older cards).\n"
 862             "\n" );
 863     return -1;
 864   }
 865     if(!init_mpglcontext(&glctx, gltype)) goto err_out;
 866     if (use_yuv == -1) {
 867 #ifdef CONFIG_GL_WIN32
 868       if (config_w32(320, 200, 320, 200, VOFLAG_HIDDEN, "", 0) == -1)
 869 #endif
 870 #ifdef CONFIG_GL_X11
 871       if (config_glx(320, 200, 320, 200, VOFLAG_HIDDEN, "", 0) == -1)
 872 #endif
 873         goto err_out;
 874       if (glctx.setGlWindow(&glctx) == SET_WINDOW_FAILED)
 875         goto err_out;
 876       use_yuv = glAutodetectYUVConversion();
 877     }
 878     return 0;
 879
 880 err_out:
 881     uninit();
 882     return -1;
 883 }
 884
 885 static int control(uint32_t request, void *data)
 886 {
 887   switch (request) {
 888     case VOCTRL_PAUSE:
 889     case VOCTRL_RESUME:
 890       int_pause = (request == VOCTRL_PAUSE);
 891       return VO_TRUE;
 892     case VOCTRL_QUERY_FORMAT:
 893       return query_format(*((uint32_t*)data));
 894     case VOCTRL_ONTOP:
 895       glctx.ontop();
 896       return VO_TRUE;
 897     case VOCTRL_FULLSCREEN:
 898       glctx.fullscreen();
 899       if (glctx.setGlWindow(&glctx) == SET_WINDOW_REINIT)
 900         initGl(vo_dwidth, vo_dheight);
 901       resize(vo_dwidth, vo_dheight);
 902       return VO_TRUE;
 903     case VOCTRL_BORDER:
 904       glctx.border();
 905       return VO_TRUE;
 906     case VOCTRL_GET_PANSCAN:
 907       return VO_TRUE;
 908     case VOCTRL_SET_PANSCAN:
 909       resize(vo_dwidth, vo_dheight);
 910       return VO_TRUE;
 911 #ifdef CONFIG_GL_X11
 912     case VOCTRL_SET_EQUALIZER:
 913     {
 914       struct voctrl_set_equalizer_args *args = data;
 915       return vo_x11_set_equalizer(args->name, args->value);
 916     }
 917     case VOCTRL_GET_EQUALIZER:
 918     {
 919       struct voctrl_get_equalizer_args *args = data;
 920       return vo_x11_get_equalizer(args->name, args->valueptr);
 921     }
 922 #endif
 923     case VOCTRL_UPDATE_SCREENINFO:
 924       glctx.update_xinerama_info();
 925       return VO_TRUE;
 926   }
 927   return VO_NOTIMPL;
 928 }