cinelerra-5.1/cinelerra/playback3d.C

   1
   2 /*
   3  * CINELERRA
   4  * Copyright (C) 2009 Adam Williams <broadcast at earthling dot net>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  *
  20  */
  21
  22 #define GL_GLEXT_PROTOTYPES
  23
  24 #include "bccolors.h"
  25 #include "bcsignals.h"
  26 #include "bcwindowbase.h"
  27 #include "canvas.h"
  28 #include "clip.h"
  29 #include "condition.h"
  30 #include "edl.h"
  31 #include "maskautos.h"
  32 #include "maskauto.h"
  33 #include "mutex.h"
  34 #include "mwindow.h"
  35 #include "overlayframe.inc"
  36 #include "overlayframe.h"
  37 #include "playback3d.h"
  38 #include "pluginclient.h"
  39 #include "pluginvclient.h"
  40 #include "edlsession.h"
  41 #include "track.h"
  42 #include "transportque.inc"
  43 #include "vframe.h"
  44
  45 #ifdef HAVE_GL
  46 #include <GL/gl.h>
  47 #include <GL/glext.h>
  48 #include <GL/glu.h>
  49 #endif
  50
  51 #include <string.h>
  52 #include <unistd.h>
  53 #include <fcntl.h>
  54
  55 #define QQ(q)#q
  56 #define SS(s)QQ(s)
  57
  58
  59 // Shaders
  60 // These should be passed to VFrame::make_shader to construct shaders.
  61 // Can't hard code sampler2D
  62
  63
  64 #ifdef HAVE_GL
  65 static const char *yuv_to_rgb_frag =
  66         "uniform sampler2D tex;\n"
  67         "uniform mat3 yuv_to_rgb_matrix;\n"
  68         "uniform float yminf;\n"
  69         "void main()\n"
  70         "{\n"
  71         "       vec4 yuva = texture2D(tex, gl_TexCoord[0].st);\n"
  72         "       yuva.rgb -= vec3(yminf, 0.5, 0.5);\n"
  73         "       gl_FragColor = vec4(yuv_to_rgb_matrix * yuva.rgb, yuva.a);\n"
  74         "}\n";
  75
  76 static const char *yuva_to_yuv_frag =
  77         "uniform sampler2D tex;\n"
  78         "void main()\n"
  79         "{\n"
  80         "       vec4 yuva = texture2D(tex, gl_TexCoord[0].st);\n"
  81         "       float a = yuva.a;\n"
  82         "       float anti_a = 1.0 - a;\n"
  83         "       yuva.r *= a;\n"
  84         "       yuva.g = yuva.g * a + 0.5 * anti_a;\n"
  85         "       yuva.b = yuva.b * a + 0.5 * anti_a;\n"
  86         "       yuva.a = 1.0;\n"
  87         "       gl_FragColor = yuva;\n"
  88         "}\n";
  89
  90 static const char *yuva_to_rgb_frag =
  91         "uniform sampler2D tex;\n"
  92         "uniform mat3 yuv_to_rgb_matrix;\n"
  93         "uniform float yminf;\n"
  94         "void main()\n"
  95         "{\n"
  96         "       vec4 yuva = texture2D(tex, gl_TexCoord[0].st);\n"
  97         "       yuva.rgb -= vec3(yminf, 0.5, 0.5);\n"
  98         "       yuva.rgb = yuv_to_rgb_matrix * yuva.rgb;\n"
  99         "       yuva.rgb *= yuva.a;\n"
 100         "       yuva.a = 1.0;\n"
 101         "       gl_FragColor = yuva;\n"
 102         "}\n";
 103
 104 static const char *rgb_to_yuv_frag =
 105         "uniform sampler2D tex;\n"
 106         "uniform mat3 rgb_to_yuv_matrix;\n"
 107         "uniform float yminf;\n"
 108         "void main()\n"
 109         "{\n"
 110         "       vec4 rgba = texture2D(tex, gl_TexCoord[0].st);\n"
 111         "       rgba.rgb = rgb_to_yuv_matrix * rgba.rgb;\n"
 112         "       rgba.rgb += vec3(yminf, 0.5, 0.5);\n"
 113         "       gl_FragColor = rgba;\n"
 114         "}\n";
 115
 116
 117 static const char *rgba_to_rgb_frag =
 118         "uniform sampler2D tex;\n"
 119         "void main()\n"
 120         "{\n"
 121         "       vec4 rgba = texture2D(tex, gl_TexCoord[0].st);\n"
 122         "       rgba.rgb *= rgba.a;\n"
 123         "       rgba.a = 1.0;\n"
 124         "       gl_FragColor = rgba;\n"
 125         "}\n";
 126
 127 static const char *rgba_to_yuv_frag =
 128         "uniform sampler2D tex;\n"
 129         "uniform mat3 rgb_to_yuv_matrix;\n"
 130         "uniform float yminf;\n"
 131         "void main()\n"
 132         "{\n"
 133         "       vec4 rgba = texture2D(tex, gl_TexCoord[0].st);\n"
 134         "       rgba.rgb *= rgba.a;\n"
 135         "       rgba.a = 1.0;\n"
 136         "       rgba.rgb = rgb_to_yuv_matrix * rgba.rgb;\n"
 137         "       rgba.rgb += vec3(yminf, 0.5, 0.5);\n"
 138         "       gl_FragColor = rgba;\n"
 139         "}\n";
 140
 141 //static const char *rgba_to_rgb_flatten =
 142 //      "void main() {\n"
 143 //      "       gl_FragColor.rgb *= gl_FragColor.a;\n"
 144 //      "       gl_FragColor.a = 1.0;\n"
 145 //      "}\n";
 146
 147 #define GL_STD_BLEND(FN) \
 148 static const char *blend_##FN##_frag = \
 149         "uniform sampler2D tex2;\n" \
 150         "uniform vec2 tex2_dimensions;\n" \
 151         "uniform float alpha;\n" \
 152         "void main() {\n" \
 153         "       vec4 canvas = texture2D(tex2, gl_FragCoord.xy / tex2_dimensions);\n" \
 154         "       vec4 result;\n" \
 155         "       result.rgb = " SS(COLOR_##FN(1.0, gl_FragColor.rgb, gl_FragColor.a, canvas.rgb, canvas.a)) ";\n" \
 156         "       result.a = " SS(ALPHA_##FN(1.0, gl_FragColor.a, canvas.a)) ";\n" \
 157         "       gl_FragColor = mix(canvas, result, alpha);\n" \
 158         "}\n"
 159
 160 #define GL_VEC_BLEND(FN) \
 161 static const char *blend_##FN##_frag = \
 162         "uniform sampler2D tex2;\n" \
 163         "uniform vec2 tex2_dimensions;\n" \
 164         "uniform float alpha;\n" \
 165         "void main() {\n" \
 166         "       vec4 canvas = texture2D(tex2, gl_FragCoord.xy / tex2_dimensions);\n" \
 167         "       vec4 result;\n" \
 168         "       result.r = " SS(COLOR_##FN(1.0, gl_FragColor.r, gl_FragColor.a, canvas.r, canvas.a)) ";\n" \
 169         "       result.g = " SS(COLOR_##FN(1.0, gl_FragColor.g, gl_FragColor.a, canvas.g, canvas.a)) ";\n" \
 170         "       result.b = " SS(COLOR_##FN(1.0, gl_FragColor.b, gl_FragColor.a, canvas.b, canvas.a)) ";\n" \
 171         "       result.a = " SS(ALPHA_##FN(1.0, gl_FragColor.a, canvas.a)) ";\n" \
 172         "       result = clamp(result, 0.0, 1.0);\n" \
 173         "       gl_FragColor = mix(canvas, result, alpha);\n" \
 174         "}\n"
 175
 176 #undef mabs
 177 #define mabs abs
 178 #undef mmin
 179 #define mmin min
 180 #undef mmax
 181 #define mmax max
 182
 183 #undef ZERO
 184 #define ZERO 0.0
 185 #undef ONE
 186 #define ONE 1.0
 187 #undef TWO
 188 #define TWO 2.0
 189
 190 // NORMAL
 191 static const char *blend_NORMAL_frag =
 192         "uniform sampler2D tex2;\n"
 193         "uniform vec2 tex2_dimensions;\n"
 194         "uniform float alpha;\n"
 195         "void main() {\n"
 196         "       vec4 canvas = texture2D(tex2, gl_FragCoord.xy / tex2_dimensions);\n"
 197         "       vec4 result = mix(canvas, gl_FragColor, gl_FragColor.a);\n"
 198         "       gl_FragColor = mix(canvas, result, alpha);\n"
 199         "}\n";
 200
 201 // REPLACE
 202 static const char *blend_REPLACE_frag =
 203         "uniform float alpha;\n"
 204         "void main() {\n"
 205         "}\n";
 206
 207 // ADDITION
 208 static const char *blend_ADDITION_frag =
 209         "uniform sampler2D tex2;\n"
 210         "uniform vec2 tex2_dimensions;\n"
 211         "uniform float alpha;\n"
 212         "void main() {\n"
 213         "       vec4 canvas = texture2D(tex2, gl_FragCoord.xy / tex2_dimensions);\n"
 214         "       vec4 result = clamp(gl_FragColor + canvas, 0.0, 1.0);\n"
 215         "       gl_FragColor = mix(canvas, result, alpha);\n"
 216         "}\n";
 217
 218 // SUBTRACT
 219 static const char *blend_SUBTRACT_frag =
 220         "uniform sampler2D tex2;\n"
 221         "uniform vec2 tex2_dimensions;\n"
 222         "uniform float alpha;\n"
 223         "void main() {\n"
 224         "       vec4 canvas = texture2D(tex2, gl_FragCoord.xy / tex2_dimensions);\n"
 225         "       vec4 result = clamp(gl_FragColor - canvas, 0.0, 1.0);\n"
 226         "       gl_FragColor = mix(canvas, result, alpha);\n"
 227         "}\n";
 228
 229 GL_STD_BLEND(MULTIPLY);
 230 GL_VEC_BLEND(DIVIDE);
 231 GL_VEC_BLEND(MAX);
 232 GL_VEC_BLEND(MIN);
 233 GL_VEC_BLEND(DARKEN);
 234 GL_VEC_BLEND(LIGHTEN);
 235 GL_STD_BLEND(DST);
 236 GL_STD_BLEND(DST_ATOP);
 237 GL_STD_BLEND(DST_IN);
 238 GL_STD_BLEND(DST_OUT);
 239 GL_STD_BLEND(DST_OVER);
 240 GL_STD_BLEND(SRC);
 241 GL_STD_BLEND(SRC_ATOP);
 242 GL_STD_BLEND(SRC_IN);
 243 GL_STD_BLEND(SRC_OUT);
 244 GL_STD_BLEND(SRC_OVER);
 245 GL_STD_BLEND(AND);
 246 GL_STD_BLEND(OR);
 247 GL_STD_BLEND(XOR);
 248 GL_VEC_BLEND(OVERLAY);
 249 GL_STD_BLEND(SCREEN);
 250 GL_VEC_BLEND(BURN);
 251 GL_VEC_BLEND(DODGE);
 252 GL_VEC_BLEND(HARDLIGHT);
 253 GL_VEC_BLEND(SOFTLIGHT);
 254 GL_VEC_BLEND(DIFFERENCE);
 255
 256 static const char *read_texture_frag =
 257         "uniform sampler2D tex;\n"
 258         "void main()\n"
 259         "{\n"
 260         "       gl_FragColor = texture2D(tex, gl_TexCoord[0].st);\n"
 261         "}\n";
 262
 263 static const char *in_vertex_frag =
 264         "#version 430 // vertex shader\n"
 265         "in vec3 in_pos;\n"
 266         "void main() {\n"
 267         "       gl_Position = vec4(in_pos-vec3(0.5,0.5,0.), .5);\n"
 268         "}\n";
 269
 270 static const char *feather_frag =
 271         "#version 430\n"
 272         "layout(location=0) out vec4 color;\n"
 273         "uniform sampler2D tex;\n"
 274         "const int MAX = " SS(MAX_FEATHER) "+1;\n"
 275         "uniform float psf[MAX];\n"
 276         "uniform int n;\n"
 277         "uniform vec2 dxy;\n"
 278         "uniform vec2 twh;\n"
 279         "\n"
 280         "void main() {\n"
 281         "       vec2 tc = gl_FragCoord.xy/textureSize(tex,0);\n"
 282         "       color = texture(tex, tc);\n"
 283         "       float c = color.r, f = c*psf[0];\n"
 284         "       for( int i=1; i<n; ++i ) {\n"
 285         "               vec2 dd = float(i)*dxy;\n"
 286         "               vec2 a = tc+dd, ac = min(max(vec2(0.),a), twh);\n"
 287         "               vec2 b = tc-dd, bc = min(max(vec2(0.),b), twh);\n"
 288         "               float fa = texture2D(tex, ac).r * psf[i];\n"
 289         "               float fb = texture2D(tex, bc).r * psf[i];\n"
 290         "               float m = max(fa, fb);\n"
 291         "               if( f < m ) f = m;\n"
 292         "       }\n"
 293         "       if( c < f ) color = vec4(f);\n"
 294         "}\n";
 295
 296 static const char *max_frag =
 297         "#version 430\n"
 298         "layout(location=0) out vec4 color;\n"
 299         "uniform sampler2D tex;\n"
 300         "uniform sampler2D tex1;\n"
 301         "uniform float r;\n"
 302         "uniform float v;\n"
 303         "\n"
 304         "void main() {\n"
 305         "       vec2 tc = gl_FragCoord.xy/textureSize(tex,0);\n"
 306         "       color = texture2D(tex1, tc);\n"
 307         "       float c = texture2D(tex, tc).r;\n"
 308         "       float b = r<0 ? 1. : 0.;\n"
 309         "       if( c == b ) return;\n"
 310         "       float iv = v>=0. ? 1. : -1.;\n"
 311         "       float rr = r!=0. ? r : 1.;\n"
 312         "       float rv = rr*v>=0. ? 1. : -1.;\n"
 313         "       float vv = v>=0. ? 1.-v : 1.+v;\n"
 314         "       float fg = rv>0. ? vv : 1.;\n"
 315         "       float bg = rv>0. ? 1. : vv;\n"
 316         "       float a = c*fg + (1.-c)*bg;\n"
 317         "       if( iv*(color.a-a) > 0. ) color = vec4(a);\n"
 318         "}\n";
 319
 320 static const char *multiply_mask4_frag =
 321         "uniform sampler2D tex;\n"
 322         "uniform sampler2D tex1;\n"
 323         "void main()\n"
 324         "{\n"
 325         "       gl_FragColor = texture2D(tex, gl_TexCoord[0].st);\n"
 326         "       gl_FragColor.a *= texture2D(tex1, gl_TexCoord[0].st).r;\n"
 327         "}\n";
 328
 329 static const char *multiply_mask3_frag =
 330         "uniform sampler2D tex;\n"
 331         "uniform sampler2D tex1;\n"
 332         "void main()\n"
 333         "{\n"
 334         "       gl_FragColor = texture2D(tex, gl_TexCoord[0].st);\n"
 335         "       float a = texture2D(tex1, gl_TexCoord[0].st).r;\n"
 336         "       gl_FragColor.rgb *= vec3(a, a, a);\n"
 337         "}\n";
 338
 339 static const char *multiply_yuvmask3_frag =
 340         "uniform sampler2D tex;\n"
 341         "uniform sampler2D tex1;\n"
 342         "void main()\n"
 343         "{\n"
 344         "       gl_FragColor = texture2D(tex, gl_TexCoord[0].st);\n"
 345         "       float a = texture2D(tex1, gl_TexCoord[0].st).r;\n"
 346         "       gl_FragColor.gb -= vec2(0.5, 0.5);\n"
 347         "       gl_FragColor.rgb *= vec3(a, a, a);\n"
 348         "       gl_FragColor.gb += vec2(0.5, 0.5);\n"
 349         "}\n";
 350
 351 static const char *fade_rgba_frag =
 352         "uniform sampler2D tex;\n"
 353         "uniform float alpha;\n"
 354         "void main()\n"
 355         "{\n"
 356         "       gl_FragColor = texture2D(tex, gl_TexCoord[0].st);\n"
 357         "       gl_FragColor.a *= alpha;\n"
 358         "}\n";
 359
 360 static const char *fade_yuv_frag =
 361         "uniform sampler2D tex;\n"
 362         "uniform float alpha;\n"
 363         "void main()\n"
 364         "{\n"
 365         "       gl_FragColor = texture2D(tex, gl_TexCoord[0].st);\n"
 366         "       gl_FragColor.r *= alpha;\n"
 367         "       gl_FragColor.gb -= vec2(0.5, 0.5);\n"
 368         "       gl_FragColor.g *= alpha;\n"
 369         "       gl_FragColor.b *= alpha;\n"
 370         "       gl_FragColor.gb += vec2(0.5, 0.5);\n"
 371         "}\n";
 372
 373 #endif
 374
 375
 376 Playback3DCommand::Playback3DCommand()
 377  : BC_SynchronousCommand()
 378 {
 379         canvas = 0;
 380         is_nested = 0;
 381 }
 382
 383 void Playback3DCommand::copy_from(BC_SynchronousCommand *command)
 384 {
 385         Playback3DCommand *ptr = (Playback3DCommand*)command;
 386         this->canvas = ptr->canvas;
 387         this->is_cleared = ptr->is_cleared;
 388
 389         this->in_x1 = ptr->in_x1;
 390         this->in_y1 = ptr->in_y1;
 391         this->in_x2 = ptr->in_x2;
 392         this->in_y2 = ptr->in_y2;
 393         this->out_x1 = ptr->out_x1;
 394         this->out_y1 = ptr->out_y1;
 395         this->out_x2 = ptr->out_x2;
 396         this->out_y2 = ptr->out_y2;
 397         this->alpha = ptr->alpha;
 398         this->mode = ptr->mode;
 399         this->interpolation_type = ptr->interpolation_type;
 400
 401         this->input = ptr->input;
 402         this->start_position_project = ptr->start_position_project;
 403         this->keyframe_set = ptr->keyframe_set;
 404         this->keyframe = ptr->keyframe;
 405         this->default_auto = ptr->default_auto;
 406         this->plugin_client = ptr->plugin_client;
 407         this->want_texture = ptr->want_texture;
 408         this->is_nested = ptr->is_nested;
 409         this->dst_cmodel = ptr->dst_cmodel;
 410
 411         BC_SynchronousCommand::copy_from(command);
 412 }
 413
 414 Playback3D::Playback3D(MWindow *mwindow)
 415  : BC_Synchronous()
 416 {
 417         this->mwindow = mwindow;
 418         temp_texture = 0;
 419 }
 420
 421 Playback3D::~Playback3D()
 422 {
 423 }
 424
 425
 426
 427
 428 BC_SynchronousCommand* Playback3D::new_command()
 429 {
 430         return new Playback3DCommand;
 431 }
 432
 433
 434
 435 void Playback3D::handle_command(BC_SynchronousCommand *command)
 436 {
 437 //printf("Playback3D::handle_command 1 %d\n", command->command);
 438         switch(command->command)
 439         {
 440                 case Playback3DCommand::WRITE_BUFFER:
 441                         write_buffer_sync((Playback3DCommand*)command);
 442                         break;
 443
 444                 case Playback3DCommand::CLEAR_OUTPUT:
 445                         clear_output_sync((Playback3DCommand*)command);
 446                         break;
 447
 448                 case Playback3DCommand::CLEAR_INPUT:
 449                         clear_input_sync((Playback3DCommand*)command);
 450                         break;
 451
 452                 case Playback3DCommand::DO_CAMERA:
 453                         do_camera_sync((Playback3DCommand*)command);
 454                         break;
 455
 456                 case Playback3DCommand::OVERLAY:
 457                         overlay_sync((Playback3DCommand*)command);
 458                         break;
 459
 460                 case Playback3DCommand::DO_FADE:
 461                         do_fade_sync((Playback3DCommand*)command);
 462                         break;
 463
 464                 case Playback3DCommand::DO_MASK:
 465                         do_mask_sync((Playback3DCommand*)command);
 466                         break;
 467
 468                 case Playback3DCommand::PLUGIN:
 469                         run_plugin_sync((Playback3DCommand*)command);
 470                         break;
 471
 472                 case Playback3DCommand::COPY_FROM:
 473                         copy_from_sync((Playback3DCommand*)command);
 474                         break;
 475
 476                 case Playback3DCommand::CONVERT_CMODEL:
 477                         convert_cmodel_sync((Playback3DCommand*)command);
 478                         break;
 479
 480 //              case Playback3DCommand::DRAW_REFRESH:
 481 //                      draw_refresh_sync((Playback3DCommand*)command);
 482 //                      break;
 483         }
 484 //printf("Playback3D::handle_command 10\n");
 485 }
 486
 487
 488
 489
 490 void Playback3D::copy_from(Canvas *canvas,
 491         VFrame *dst,
 492         VFrame *src,
 493         int want_texture)
 494 {
 495         Playback3DCommand command;
 496         command.command = Playback3DCommand::COPY_FROM;
 497         command.canvas = canvas;
 498         command.frame = dst;
 499         command.input = src;
 500         command.want_texture = want_texture;
 501         send_command(&command);
 502 }
 503
 504 void Playback3D::copy_from_sync(Playback3DCommand *command)
 505 {
 506 #ifdef HAVE_GL
 507         BC_WindowBase *window =
 508                 command->canvas->lock_canvas("Playback3D::copy_from_sync");
 509         if( window ) {
 510                 window->enable_opengl();
 511                 glFinish();
 512                 int copy_to_ram = 0;
 513                 int w = command->input->get_w();
 514                 int h = command->input->get_h();
 515                 if( command->input->get_opengl_state() == VFrame::SCREEN &&
 516                     w == command->frame->get_w() && h == command->frame->get_h() ) {
 517 // printf("Playback3D::copy_from_sync 1 %d %d %d %d %d\n",
 518 // command->input->get_w(), command->input->get_h(),
 519 // command->frame->get_w(), command->frame->get_h(),
 520 // command->frame->get_color_model());
 521 #ifdef GLx4
 522 // With NVidia at least
 523                         if(w % 4) {
 524                                 printf("Playback3D::copy_from_sync: w=%d not supported because it is not divisible by 4.\n", w);
 525                         }
 526                         else
 527 #endif
 528 // Copy to texture
 529                         if( command->want_texture ) {
 530 //printf("Playback3D::copy_from_sync 1 dst=%p src=%p\n", command->frame, command->input);
 531 // Screen_to_texture requires the source pbuffer enabled.
 532                                 command->input->enable_opengl();
 533                                 command->frame->screen_to_texture();
 534                                 command->frame->set_opengl_state(VFrame::TEXTURE);
 535                         }
 536                         else {
 537                                 command->input->to_texture();
 538                                 copy_to_ram = 1;
 539                         }
 540                 }
 541                 else if( command->input->get_opengl_state() == VFrame::TEXTURE &&
 542                         w == command->frame->get_w() && h == command->frame->get_h() ) {
 543                                 copy_to_ram = 1;
 544                 }
 545                 else {
 546                         printf("Playback3D::copy_from_sync: invalid formats opengl_state=%d %dx%d -> %dx%d\n",
 547                                 command->input->get_opengl_state(), w, h,
 548                                 command->frame->get_w(), command->frame->get_h());
 549                 }
 550
 551                 if( copy_to_ram ) {
 552                         command->input->bind_texture(0);
 553                         command->frame->enable_opengl();
 554                         command->frame->init_screen();
 555                         unsigned int shader = BC_CModels::is_yuv(command->input->get_color_model()) ?
 556                                 VFrame::make_shader(0, yuv_to_rgb_frag, 0) : 0;
 557                         if( shader > 0 ) {
 558                                 glUseProgram(shader);
 559                                 int variable = glGetUniformLocation(shader, "tex");
 560                                 glUniform1i(variable, 0);
 561                                 BC_GL_YUV_TO_RGB(shader);
 562                         }
 563                         else
 564                                 glUseProgram(0);
 565                         command->input->draw_texture(1);
 566                         command->frame->screen_to_ram();
 567                         glUseProgram(0);
 568                 }
 569         }
 570         command->canvas->unlock_canvas();
 571 #endif
 572 }
 573
 574
 575
 576
 577 // void Playback3D::draw_refresh(Canvas *canvas,
 578 //      VFrame *frame,
 579 //      float in_x1,
 580 //      float in_y1,
 581 //      float in_x2,
 582 //      float in_y2,
 583 //      float out_x1,
 584 //      float out_y1,
 585 //      float out_x2,
 586 //      float out_y2)
 587 // {
 588 //      Playback3DCommand command;
 589 //      command.command = Playback3DCommand::DRAW_REFRESH;
 590 //      command.canvas = canvas;
 591 //      command.frame = frame;
 592 //      command.in_x1 = in_x1;
 593 //      command.in_y1 = in_y1;
 594 //      command.in_x2 = in_x2;
 595 //      command.in_y2 = in_y2;
 596 //      command.out_x1 = out_x1;
 597 //      command.out_y1 = out_y1;
 598 //      command.out_x2 = out_x2;
 599 //      command.out_y2 = out_y2;
 600 //      send_command(&command);
 601 // }
 602 //
 603 // void Playback3D::draw_refresh_sync(Playback3DCommand *command)
 604 // {
 605 // #ifdef HAVE_GL
 606 //      BC_WindowBase *window =
 607 //              command->canvas->lock_canvas("Playback3D::draw_refresh_sync");
 608 //      if( window ) {
 609 //              window->enable_opengl();
 610 //
 611 // // Read output pbuffer back to RAM in project colormodel
 612 // // RGB 8bit is fastest for OpenGL to read back.
 613 //              command->frame->reallocate(0,
 614 //                      0,
 615 //                      0,
 616 //                      0,
 617 //                      command->frame->get_w(),
 618 //                      command->frame->get_h(),
 619 //                      BC_RGB888,
 620 //                      -1);
 621 //              command->frame->screen_to_ram();
 622 //
 623 //              window->clear_box(0,
 624 //                                              0,
 625 //                                              window->get_w(),
 626 //                                              window->get_h());
 627 //              window->draw_vframe(command->frame,
 628 //                                                      (int)command->out_x1,
 629 //                                                      (int)command->out_y1,
 630 //                                                      (int)(command->out_x2 - command->out_x1),
 631 //                                                      (int)(command->out_y2 - command->out_y1),
 632 //                                                      (int)command->in_x1,
 633 //                                                      (int)command->in_y1,
 634 //                                                      (int)(command->in_x2 - command->in_x1),
 635 //                                                      (int)(command->in_y2 - command->in_y1),
 636 //                                                      0);
 637 //
 638 //      }
 639 //      command->canvas->unlock_canvas();
 640 // #endif
 641 // }
 642
 643
 644
 645
 646
 647 void Playback3D::write_buffer(Canvas *canvas,
 648         VFrame *frame,
 649         float in_x1,
 650         float in_y1,
 651         float in_x2,
 652         float in_y2,
 653         float out_x1,
 654         float out_y1,
 655         float out_x2,
 656         float out_y2,
 657         int is_cleared)
 658 {
 659         Playback3DCommand command;
 660         command.command = Playback3DCommand::WRITE_BUFFER;
 661         command.canvas = canvas;
 662         command.frame = frame;
 663         command.in_x1 = in_x1;
 664         command.in_y1 = in_y1;
 665         command.in_x2 = in_x2;
 666         command.in_y2 = in_y2;
 667         command.out_x1 = out_x1;
 668         command.out_y1 = out_y1;
 669         command.out_x2 = out_x2;
 670         command.out_y2 = out_y2;
 671         command.is_cleared = is_cleared;
 672         send_command(&command);
 673 }
 674
 675
 676 void Playback3D::write_buffer_sync(Playback3DCommand *command)
 677 {
 678 #ifdef HAVE_GL
 679         BC_WindowBase *window =
 680                 command->canvas->lock_canvas("Playback3D::write_buffer_sync");
 681         if( window ) {
 682                 window->enable_opengl();
 683 // Update hidden cursor
 684                 window->update_video_cursor();
 685                 command->frame->enable_opengl();
 686                 command->frame->init_screen();
 687 //printf("Playback3D::write_buffer_sync 1 %d\n", window->get_id());
 688                 int frame_state = command->frame->get_opengl_state();
 689                 if( frame_state != VFrame::TEXTURE )
 690                         command->frame->to_texture();
 691                 if( frame_state != VFrame::RAM ) {
 692                         command->in_y1 = command->frame->get_h() - command->in_y1;
 693                         command->in_y2 = command->frame->get_h() - command->in_y2;
 694                 }
 695                 window->enable_opengl();
 696                 draw_output(command, 1);
 697                 command->frame->set_opengl_state(frame_state);
 698         }
 699         command->canvas->unlock_canvas();
 700 #endif
 701 }
 702
 703
 704
 705 void Playback3D::draw_output(Playback3DCommand *command, int flip_y)
 706 {
 707 #ifdef HAVE_GL
 708         int texture_id = command->frame->get_texture_id();
 709         BC_WindowBase *window = command->canvas->get_canvas();
 710
 711 // printf("Playback3D::draw_output 1 texture_id=%d window=%p\n",
 712 // texture_id,
 713 // command->canvas->get_canvas());
 714
 715
 716
 717
 718 // If virtual console is being used, everything in this function has
 719 // already been done except the page flip.
 720         if(texture_id >= 0)
 721         {
 722                 canvas_w = window->get_w();
 723                 canvas_h = window->get_h();
 724                 VFrame::init_screen(canvas_w, canvas_h);
 725                 int color_model = command->frame->get_color_model();
 726                 int is_yuv = BC_CModels::is_yuv(color_model);
 727
 728                 if(!command->is_cleared)
 729                 {
 730 // If we get here, the virtual console was not used.
 731                         int color = command->canvas->get_clear_color();
 732                         int r = (color>>16) & 0xff; // always rgb
 733                         int g = (color>>8) & 0xff;
 734                         int b = (color>>0) & 0xff;
 735                         color_frame(command, r/255.f, g/255.f, b/255.f, 0.f);
 736                 }
 737
 738 // Texture
 739 // Undo any previous shader settings
 740                 command->frame->bind_texture(0);
 741
 742 // Convert colormodel
 743                 unsigned int shader = is_yuv ? VFrame::make_shader(0, yuv_to_rgb_frag, 0) : 0;
 744                 if( shader > 0 ) {
 745                         glUseProgram(shader);
 746 // Set texture unit of the texture
 747                         int variable = glGetUniformLocation(shader, "tex");
 748                         glUniform1i(variable, 0);
 749                         BC_GL_YUV_TO_RGB(shader);
 750                 }
 751
 752 //              if(BC_CModels::components(color_model) == 4)
 753 //              {
 754 //                      glEnable(GL_BLEND);
 755 //                      glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 756 //              }
 757
 758                 command->frame->draw_texture(
 759                         command->in_x1, command->in_y1, command->in_x2, command->in_y2,
 760                         command->out_x1, command->out_y1, command->out_x2, command->out_y2,
 761                         flip_y);
 762
 763
 764 //printf("Playback3D::draw_output 2 %f,%f %f,%f -> %f,%f %f,%f\n",
 765 // command->in_x1, command->in_y1, command->in_x2, command->in_y2,
 766 // command->out_x1, command->out_y1, command->out_x2, command->out_y2);
 767
 768                 glUseProgram(0);
 769
 770                 command->canvas->get_canvas()->flip_opengl();
 771
 772         }
 773 #endif
 774 }
 775
 776
 777 void Playback3D::color_frame(Playback3DCommand *command,
 778                 float r, float g, float b, float a)
 779 {
 780 #ifdef HAVE_GL
 781         glClearColor(r, g, b, a);
 782         glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 783 #endif
 784 }
 785
 786
 787 void Playback3D::clear_output(Canvas *canvas, VFrame *output)
 788 {
 789         Playback3DCommand command;
 790         command.command = Playback3DCommand::CLEAR_OUTPUT;
 791         command.canvas = canvas;
 792         command.frame = output;
 793         send_command(&command);
 794 }
 795
 796 void Playback3D::clear_output_sync(Playback3DCommand *command)
 797 {
 798 #ifdef HAVE_GL
 799         BC_WindowBase *window =
 800                 command->canvas->lock_canvas("Playback3D::clear_output_sync");
 801         if( window ) {
 802 // If we get here, the virtual console is being used.
 803                 command->canvas->get_canvas()->enable_opengl();
 804                 int is_yuv = 0;
 805                 int color = BLACK, alpha = 0;
 806 // Using pbuffer for refresh frame.
 807                 if( command->frame ) {
 808                         command->frame->enable_opengl();
 809                         command->frame->set_opengl_state(VFrame::SCREEN);
 810                         color = command->frame->get_clear_color();
 811                         alpha = command->frame->get_clear_alpha();
 812                         int color_model = command->canvas->mwindow->edl->session->color_model;
 813                         is_yuv = BC_CModels::is_yuv(color_model);
 814                 }
 815                 else
 816                         color = command->canvas->get_clear_color();
 817                 int a = alpha;
 818                 int r = (color>>16) & 0xff;
 819                 int g = (color>>8) & 0xff;
 820                 int b = (color>>0) & 0xff;
 821                 if( is_yuv ) YUV::yuv.rgb_to_yuv_8(r, g, b);
 822                 color_frame(command, r/255.f, g/255.f, b/255.f, a/255.f);
 823         }
 824         command->canvas->unlock_canvas();
 825 #endif
 826 }
 827
 828
 829 void Playback3D::clear_input(Canvas *canvas, VFrame *frame)
 830 {
 831         Playback3DCommand command;
 832         command.command = Playback3DCommand::CLEAR_INPUT;
 833         command.canvas = canvas;
 834         command.frame = frame;
 835         send_command(&command);
 836 }
 837
 838 void Playback3D::clear_input_sync(Playback3DCommand *command)
 839 {
 840 #ifdef HAVE_GL
 841         BC_WindowBase *window =
 842                 command->canvas->lock_canvas("Playback3D::clear_input_sync");
 843         if( window ) {
 844                 command->canvas->get_canvas()->enable_opengl();
 845                 command->frame->enable_opengl();
 846                 command->frame->clear_pbuffer();
 847                 command->frame->set_opengl_state(VFrame::SCREEN);
 848         }
 849         command->canvas->unlock_canvas();
 850 #endif
 851 }
 852
 853 void Playback3D::do_camera(Canvas *canvas,
 854         VFrame *output,
 855         VFrame *input,
 856         float in_x1,
 857         float in_y1,
 858         float in_x2,
 859         float in_y2,
 860         float out_x1,
 861         float out_y1,
 862         float out_x2,
 863         float out_y2)
 864 {
 865         Playback3DCommand command;
 866         command.command = Playback3DCommand::DO_CAMERA;
 867         command.canvas = canvas;
 868         command.input = input;
 869         command.frame = output;
 870         command.in_x1 = in_x1;
 871         command.in_y1 = in_y1;
 872         command.in_x2 = in_x2;
 873         command.in_y2 = in_y2;
 874         command.out_x1 = out_x1;
 875         command.out_y1 = out_y1;
 876         command.out_x2 = out_x2;
 877         command.out_y2 = out_y2;
 878         send_command(&command);
 879 }
 880
 881 void Playback3D::do_camera_sync(Playback3DCommand *command)
 882 {
 883 #ifdef HAVE_GL
 884         BC_WindowBase *window =
 885                 command->canvas->lock_canvas("Playback3D::do_camera_sync");
 886         if( window ) {
 887                 command->canvas->get_canvas()->enable_opengl();
 888
 889                 command->input->to_texture();
 890                 command->frame->enable_opengl();
 891                 command->frame->init_screen();
 892                 command->frame->clear_pbuffer();
 893
 894                 command->input->bind_texture(0);
 895 // Must call draw_texture in input frame to get the texture coordinates right.
 896
 897 // printf("Playback3D::do_camera_sync 1 %.2f %.2f %.2f %.2f %.2f %.2f %.2f %.2f\n",
 898 // command->in_x1,
 899 // command->in_y2,
 900 // command->in_x2,
 901 // command->in_y1,
 902 // command->out_x1,
 903 // (float)command->input->get_h() - command->out_y1,
 904 // command->out_x2,
 905 // (float)command->input->get_h() - command->out_y2);
 906                 command->input->draw_texture(
 907                         command->in_x1, command->in_y2,
 908                         command->in_x2, command->in_y1,
 909                         command->out_x1,
 910                         (float)command->frame->get_h() - command->out_y1,
 911                         command->out_x2,
 912                         (float)command->frame->get_h() - command->out_y2);
 913
 914
 915                 command->frame->set_opengl_state(VFrame::SCREEN);
 916                 command->frame->screen_to_ram();
 917         }
 918         command->canvas->unlock_canvas();
 919 #endif
 920 }
 921
 922 void Playback3D::overlay(Canvas *canvas, VFrame *input,
 923         float in_x1, float in_y1, float in_x2, float in_y2,
 924         float out_x1, float out_y1, float out_x2, float out_y2,
 925         float alpha, int mode, int interpolation_type,
 926         VFrame *output, int is_nested)
 927 {
 928         Playback3DCommand command;
 929         command.command = Playback3DCommand::OVERLAY;
 930         command.canvas = canvas;
 931         command.frame = output;
 932         command.input = input;
 933         command.in_x1 = in_x1;
 934         command.in_y1 = in_y1;
 935         command.in_x2 = in_x2;
 936         command.in_y2 = in_y2;
 937         command.out_x1 = out_x1;
 938         command.out_y1 = out_y1;
 939         command.out_x2 = out_x2;
 940         command.out_y2 = out_y2;
 941         command.alpha = alpha;
 942         command.mode = mode;
 943         command.interpolation_type = interpolation_type;
 944         command.is_nested = is_nested;
 945         send_command(&command);
 946 }
 947
 948 void Playback3D::overlay_sync(Playback3DCommand *command)
 949 {
 950 #ifdef HAVE_GL
 951 // To do these operations, we need to copy the input buffer to a texture
 952 // and blend 2 textures in a shader
 953         static const char * const overlay_shaders[TRANSFER_TYPES] = {
 954                 blend_NORMAL_frag,      // TRANSFER_NORMAL
 955                 blend_ADDITION_frag,    // TRANSFER_ADDITION
 956                 blend_SUBTRACT_frag,    // TRANSFER_SUBTRACT
 957                 blend_MULTIPLY_frag,    // TRANSFER_MULTIPLY
 958                 blend_DIVIDE_frag,      // TRANSFER_DIVIDE
 959                 blend_REPLACE_frag,     // TRANSFER_REPLACE
 960                 blend_MAX_frag,         // TRANSFER_MAX
 961                 blend_MIN_frag,         // TRANSFER_MIN
 962                 blend_DARKEN_frag,      // TRANSFER_DARKEN
 963                 blend_LIGHTEN_frag,     // TRANSFER_LIGHTEN
 964                 blend_DST_frag,         // TRANSFER_DST
 965                 blend_DST_ATOP_frag,    // TRANSFER_DST_ATOP
 966                 blend_DST_IN_frag,      // TRANSFER_DST_IN
 967                 blend_DST_OUT_frag,     // TRANSFER_DST_OUT
 968                 blend_DST_OVER_frag,    // TRANSFER_DST_OVER
 969                 blend_SRC_frag,         // TRANSFER_SRC
 970                 blend_SRC_ATOP_frag,    // TRANSFER_SRC_ATOP
 971                 blend_SRC_IN_frag,      // TRANSFER_SRC_IN
 972                 blend_SRC_OUT_frag,     // TRANSFER_SRC_OUT
 973                 blend_SRC_OVER_frag,    // TRANSFER_SRC_OVER
 974                 blend_AND_frag,         // TRANSFER_AND
 975                 blend_OR_frag,          // TRANSFER_OR
 976                 blend_XOR_frag,         // TRANSFER_XOR
 977                 blend_OVERLAY_frag,     // TRANSFER_OVERLAY
 978                 blend_SCREEN_frag,      // TRANSFER_SCREEN
 979                 blend_BURN_frag,        // TRANSFER_BURN
 980                 blend_DODGE_frag,       // TRANSFER_DODGE
 981                 blend_HARDLIGHT_frag,   // TRANSFER_HARDLIGHT
 982                 blend_SOFTLIGHT_frag,   // TRANSFER_SOFTLIGHT
 983                 blend_DIFFERENCE_frag,  // TRANSFER_DIFFERENCE
 984         };
 985
 986         BC_WindowBase *window =
 987                 command->canvas->lock_canvas("Playback3D::overlay_sync");
 988         if( window ) {
 989 // Make sure OpenGL is enabled first.
 990                 window->enable_opengl();
 991                 window->update_video_cursor();
 992
 993                 glColor4f(1, 1, 1, 1);
 994                 glDisable(GL_BLEND);
 995
 996
 997 //printf("Playback3D::overlay_sync 1 %d\n", command->input->get_opengl_state());
 998                 switch( command->input->get_opengl_state() ) {
 999 // Upload texture and composite to screen
1000                 case VFrame::RAM:
1001                         command->input->to_texture();
1002                         break;
1003 // Just composite texture to screen
1004                 case VFrame::TEXTURE:
1005                         break;
1006 // read from PBuffer to texture, then composite texture to screen
1007                 case VFrame::SCREEN:
1008                         command->input->enable_opengl();
1009                         command->input->screen_to_texture();
1010                         break;
1011                 default:
1012                         printf("Playback3D::overlay_sync unknown state\n");
1013                         break;
1014                 }
1015
1016                 if(command->frame) {
1017 // Render to PBuffer
1018                         command->frame->enable_opengl();
1019                         command->frame->set_opengl_state(VFrame::SCREEN);
1020                         canvas_w = command->frame->get_w();
1021                         canvas_h = command->frame->get_h();
1022                 }
1023                 else {
1024 // Render to canvas
1025                         window->enable_opengl();
1026                         canvas_w = window->get_w();
1027                         canvas_h = window->get_h();
1028                 }
1029
1030
1031                 const char *shader_stack[16];
1032                 memset(shader_stack,0, sizeof(shader_stack));
1033                 int total_shaders = 0, need_matrix = 0;
1034
1035                 VFrame::init_screen(canvas_w, canvas_h);
1036
1037 // Enable texture
1038                 command->input->bind_texture(0);
1039
1040 // Convert colormodel to RGB if not nested.
1041 // The color model setting in the output frame is ignored.
1042 //              if( command->is_nested <= 0 &&  // not nested
1043 //                  BC_CModels::is_yuv(command->input->get_color_model()) ) {
1044 //                      need_matrix = 1;
1045 //                      shader_stack[total_shaders++] = yuv_to_rgb_frag;
1046 //              }
1047
1048 // get the shaders
1049 #define add_shader(s) \
1050   if(!total_shaders) shader_stack[total_shaders++] = read_texture_frag; \
1051   shader_stack[total_shaders++] = s
1052
1053                 switch(command->mode) {
1054                 case TRANSFER_REPLACE:
1055 // This requires overlaying an alpha multiplied image on a black screen.
1056                         if( command->input->get_texture_components() != 4 ) break;
1057                         add_shader(overlay_shaders[command->mode]);
1058                         break;
1059                 default:
1060                         enable_overlay_texture(command);
1061                         add_shader(overlay_shaders[command->mode]);
1062                         break;
1063                 }
1064
1065 // if to flatten alpha
1066 //              if( command->is_nested < 0 ) {
1067 //                      switch(command->input->get_color_model()) {
1068 //// yuv has already been converted to rgb
1069 //                      case BC_YUVA8888:
1070 //                      case BC_RGBA_FLOAT:
1071 //                      case BC_RGBA8888:
1072 //                              add_shader(rgba_to_rgb_flatten);
1073 //                              break;
1074 //                      }
1075 //              }
1076
1077 // run the shaders
1078                 add_shader(0);
1079                 unsigned int shader = !shader_stack[0] ? 0 :
1080                         VFrame::make_shader(shader_stack);
1081                 if( shader > 0 ) {
1082                         glUseProgram(shader);
1083                         if( need_matrix ) BC_GL_YUV_TO_RGB(shader);
1084 // Set texture unit of the texture
1085                         glUniform1i(glGetUniformLocation(shader, "tex"), 0);
1086 // Set texture unit of the temp texture
1087                         glUniform1i(glGetUniformLocation(shader, "tex2"), 1);
1088 // Set alpha
1089                         int variable = glGetUniformLocation(shader, "alpha");
1090                         glUniform1f(variable, command->alpha);
1091 // Set dimensions of the temp texture
1092                         if(temp_texture)
1093                                 glUniform2f(glGetUniformLocation(shader, "tex2_dimensions"),
1094                                         (float)temp_texture->get_texture_w(),
1095                                         (float)temp_texture->get_texture_h());
1096                 }
1097                 else
1098                         glUseProgram(0);
1099
1100
1101 //printf("Playback3D::overlay_sync %f %f %f %f %f %f %f %f\n",
1102 // command->in_x1, command->in_y1, command->in_x2, command->in_y2,
1103 // command->out_x1, command->out_y1, command->out_x2, command->out_y2);
1104
1105                 command->input->draw_texture(
1106                         command->in_x1, command->in_y1, command->in_x2, command->in_y2,
1107                         command->out_x1, command->out_y1, command->out_x2, command->out_y2,
1108                         !command->is_nested);
1109                 glUseProgram(0);
1110
1111 // Delete temp texture
1112                 if(temp_texture) {
1113                         delete temp_texture;
1114                         temp_texture = 0;
1115                         glActiveTexture(GL_TEXTURE1);
1116                         glDisable(GL_TEXTURE_2D);
1117                 }
1118                 glActiveTexture(GL_TEXTURE0);
1119                 glDisable(GL_TEXTURE_2D);
1120         }
1121         command->canvas->unlock_canvas();
1122 #endif
1123 }
1124
1125 void Playback3D::enable_overlay_texture(Playback3DCommand *command)
1126 {
1127 #ifdef HAVE_GL
1128         glDisable(GL_BLEND);
1129
1130         glActiveTexture(GL_TEXTURE1);
1131         BC_Texture::new_texture(&temp_texture, canvas_w, canvas_h,
1132                 command->input->get_color_model());
1133         temp_texture->bind(1);
1134
1135 // Read canvas into texture
1136         glReadBuffer(GL_BACK);
1137         glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, canvas_w, canvas_h);
1138 #endif
1139 }
1140
1141
1142 void Playback3D::do_mask(Canvas *canvas,
1143         VFrame *output,
1144         int64_t start_position_project,
1145         MaskAutos *keyframe_set,
1146         MaskAuto *keyframe,
1147         MaskAuto *default_auto)
1148 {
1149         Playback3DCommand command;
1150         command.command = Playback3DCommand::DO_MASK;
1151         command.canvas = canvas;
1152         command.frame = output;
1153         command.start_position_project = start_position_project;
1154         command.keyframe_set = keyframe_set;
1155         command.keyframe = keyframe;
1156         command.default_auto = default_auto;
1157
1158         send_command(&command);
1159 }
1160
1161
1162 void Playback3D::draw_spots(MaskSpots &spots, int ix1,int iy1, int ix2,int iy2)
1163 {
1164         int x1 = iy1 < iy2 ? ix1 : ix2;
1165         int y1 = iy1 < iy2 ? iy1 : iy2;
1166         int x2 = iy1 < iy2 ? ix2 : ix1;
1167         int y2 = iy1 < iy2 ? iy2 : iy1;
1168
1169         int x = x1, y = y1;
1170         int dx = x2-x1, dy = y2-y1;
1171         int dx2 = 2*dx, dy2 = 2*dy;
1172         if( dx < 0 ) dx = -dx;
1173         int m = dx > dy ? dx : dy, n = m;
1174         if( dy >= dx ) {
1175                 if( dx2 >= 0 ) do {     /* +Y, +X */
1176                         spots.append(x, y++);
1177                         if( (m -= dx2) < 0 ) { m += dy2;  ++x; }
1178                 } while( --n >= 0 );
1179                 else do {              /* +Y, -X */
1180                         spots.append(x, y++);
1181                         if( (m += dx2) < 0 ) { m += dy2;  --x; }
1182                 } while( --n >= 0 );
1183         }
1184         else {
1185                 if( dx2 >= 0 ) do {     /* +X, +Y */
1186                         spots.append(x++, y);
1187                         if( (m -= dy2) < 0 ) { m += dx2;  ++y; }
1188                 } while( --n >= 0 );
1189                 else do {              /* -X, +Y */
1190                         spots.append(x--, y);
1191                         if( (m -= dy2) < 0 ) { m -= dx2;  ++y; }
1192                 } while( --n >= 0 );
1193         }
1194 }
1195
1196 #ifdef HAVE_GL
1197 class fb_texture : public BC_Texture
1198 {
1199 public:
1200         fb_texture(int w, int h, int colormodel);
1201         ~fb_texture();
1202         void bind(int texture_unit);
1203         void read_screen(int x, int y, int w, int h);
1204         void set_output_texture();
1205         void unset_output_texture();
1206         GLuint fb, rb;
1207 };
1208
1209 fb_texture::fb_texture(int w, int h, int colormodel)
1210  : BC_Texture(w, h, colormodel)
1211 {
1212         fb = 0;  rb = 0;
1213 //      glGenRenderbuffers(1, &rb);
1214 //      glBindRenderbuffer(GL_RENDERBUFFER, rb);
1215 //      glRenderbufferStorage(GL_RENDERBUFFER, GL_RGBA, get_texture_w(), get_texture_w());
1216         glGenFramebuffers(1, &fb);
1217         glBindFramebuffer(GL_FRAMEBUFFER, fb);
1218 //      glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, rb);
1219 }
1220
1221 fb_texture::~fb_texture()
1222 {
1223         glBindFramebuffer(GL_FRAMEBUFFER, 0);
1224         glDeleteFramebuffers(1, (GLuint *)&fb);
1225 //      glBindRenderbuffer(GL_RENDERBUFFER, 0);
1226 //      glGenRenderbuffers(1, &rb);
1227 }
1228
1229 void fb_texture::bind(int texture_unit)
1230 {
1231         glBindFramebuffer(GL_FRAMEBUFFER, fb);
1232 //      glBindRenderbuffer(GL_RENDERBUFFER, rb);
1233         BC_Texture::bind(texture_unit);
1234 }
1235
1236 void fb_texture::read_screen(int x, int y, int w, int h)
1237 {
1238         bind(1);
1239         glBindFramebuffer(GL_FRAMEBUFFER, 0);
1240         glReadBuffer(GL_BACK);
1241         glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0,0, x,y, w,h);
1242 }
1243
1244 void fb_texture::set_output_texture()
1245 {
1246         GLenum at = GL_COLOR_ATTACHMENT0;
1247         glFramebufferTexture(GL_FRAMEBUFFER, at, get_texture_id(), 0);
1248         GLenum dbo[1] = { at, }; // bind layout(location=0) out vec4 color;
1249         glDrawBuffers(1, dbo);
1250         int ret = glCheckFramebufferStatus(GL_FRAMEBUFFER);
1251         if( ret != GL_FRAMEBUFFER_COMPLETE ) {
1252                 printf("glDrawBuffer error 0x%04x\n", ret);
1253                 return;
1254         }
1255 }
1256 void fb_texture::unset_output_texture()
1257 {
1258         glDrawBuffers(0, 0);
1259         int at = GL_COLOR_ATTACHMENT0;
1260         glFramebufferTexture(GL_FRAMEBUFFER, at, 0, 0);
1261         glBindFramebuffer(GL_FRAMEBUFFER, 0);
1262         glDisable(GL_TEXTURE_2D);
1263 }
1264
1265
1266 class zglTessData : public ArrayList<double *>
1267 {
1268 public:
1269         zglTessData() { set_array_delete(); }
1270         ~zglTessData() { remove_all_objects(); }
1271 };
1272
1273 static void combineData(GLdouble coords[3],
1274                 GLdouble *vertex_data[4], GLfloat weight[4],
1275                 GLdouble **outData, void *data)
1276 {
1277         zglTessData *invented = (zglTessData *)data;
1278         GLdouble *vertex = new double[6];
1279         invented->append(vertex);
1280         vertex[0] = coords[0];
1281         vertex[1] = coords[1];
1282         vertex[2] = coords[2];
1283         for( int i=3; i<6; ++i ) {
1284                 GLdouble v = 0;
1285                 for( int k=0; k<4; ++k ) {
1286                         if( !weight[k] || !vertex_data[k] ) continue;
1287                         v += weight[k] * vertex_data[k][i];
1288                 }
1289                 vertex[i] = v;
1290         }
1291         *outData = vertex;
1292 }
1293
1294 // dbug
1295 static void zglBegin(GLenum mode) { glBegin(mode); }
1296 static void zglEnd() { glEnd(); }
1297 static void zglVertex(const GLdouble *v) { glVertex3dv(v); }
1298
1299 #endif
1300
1301 void Playback3D::do_mask_sync(Playback3DCommand *command)
1302 {
1303 #ifdef HAVE_GL
1304         BC_WindowBase *window =
1305                 command->canvas->lock_canvas("Playback3D::do_mask_sync");
1306         if( window ) {
1307                 window->enable_opengl();
1308
1309                 switch( command->frame->get_opengl_state() ) {
1310                 case VFrame::RAM:
1311 // upload frame to the texture
1312                         command->frame->to_texture();
1313                         break;
1314
1315                 case VFrame::SCREEN:
1316 // Read back from PBuffer
1317 // Bind context to pbuffer
1318                         command->frame->enable_opengl();
1319                         command->frame->screen_to_texture();
1320                         break;
1321                 }
1322
1323 // Initialize coordinate system
1324                 command->frame->enable_opengl();
1325                 command->frame->init_screen();
1326                 int color_model = command->frame->get_color_model();
1327                 int w = command->frame->get_w();
1328                 int h = command->frame->get_h();
1329                 MaskEdges edges;
1330                 float faders[SUBMASKS], feathers[SUBMASKS], cc = 1;
1331                 MaskPoints point_set[SUBMASKS];
1332 // Draw every submask as a new polygon
1333                 int total_submasks = command->keyframe_set->total_submasks(
1334                         command->start_position_project, PLAY_FORWARD);
1335                 int show_mask = command->keyframe_set->track->masks;
1336
1337                 for(int k = 0; k < total_submasks; k++) {
1338                         MaskPoints &points = point_set[k];
1339                         command->keyframe_set->get_points(&points,
1340                                 k, command->start_position_project, PLAY_FORWARD);
1341                         float fader = command->keyframe_set->get_fader(
1342                                 command->start_position_project, k, PLAY_FORWARD);
1343                         float v = fader/100.;
1344                         faders[k] = v;
1345                         float feather = command->keyframe_set->get_feather(
1346                                 command->start_position_project, k, PLAY_FORWARD);
1347                         feathers[k] = feather;
1348                         MaskEdge &edge = *edges.append(new MaskEdge());
1349                         if( !v || !((show_mask>>k) & 1) || !points.size() ) continue;
1350                         edge.load(point_set[k], h);
1351                         if( v >= 0 ) continue;
1352                         float vv = 1 + v;
1353                         if( cc > vv ) cc = vv;
1354                 }
1355
1356                 fb_texture *mask = new fb_texture(w, h, color_model);
1357                 mask->set_output_texture();
1358                 glClearColor(cc, cc, cc, cc);
1359                 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
1360                 mask->unset_output_texture();
1361
1362                 unsigned int feather_shader =
1363                         VFrame::make_shader(0, in_vertex_frag, feather_frag, 0);
1364                 unsigned int max_shader =
1365                         VFrame::make_shader(0, in_vertex_frag, max_frag, 0);
1366                 if( feather_shader && max_shader ) {
1367                         fb_texture *in = new fb_texture(w, h, color_model);
1368                         fb_texture *out = new fb_texture(w, h, color_model);
1369                         float tw = 1./out->get_texture_w(), th = 1./out->get_texture_h();
1370                         float tw1 = (w-1)*tw, th1 = (h-1)*th;
1371                         for(int k = 0; k < total_submasks; k++) {
1372                                 MaskEdge &edge = *edges[k];
1373                                 if( edge.size() < 3 ) continue;
1374                                 float r = feathers[k], v = faders[k];
1375                                 glBindFramebuffer(GL_FRAMEBUFFER, 0);
1376                                 glActiveTexture(GL_TEXTURE0);
1377                                 glDisable(GL_TEXTURE_2D);
1378                                 float b = r>=0 ? 0. : 1.;
1379                                 float f = r>=0 ? 1. : 0.;
1380                                 glClearColor(b, b, b, b);
1381                                 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
1382                                 glColor4f(f, f, f, f);
1383                                 glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
1384                                 int display_list = glGenLists(1);
1385 #if 0
1386                                 glNewList(display_list, GL_COMPILE);
1387                                 glBegin(GL_POLYGON);
1388                                 MaskCoord *c = &edge[0];
1389                                 for( int i=edge.size(); --i>=0; ++c )
1390                                         glVertex2f(c->x, c->y);
1391                                 glEnd();
1392                                 glEndList();
1393                                 glCallList(display_list);
1394 #else
1395                                 { zglTessData invented;
1396                                 GLUtesselator *tess = gluNewTess();
1397                                 gluTessProperty(tess, GLU_TESS_TOLERANCE, 0.5);
1398                                 gluTessCallback(tess, GLU_TESS_VERTEX,(GLvoid (*)()) &zglVertex);
1399                                 gluTessCallback(tess, GLU_TESS_BEGIN,(GLvoid (*)()) &zglBegin);
1400                                 gluTessCallback(tess, GLU_TESS_END,(GLvoid (*)()) &zglEnd);
1401                                 gluTessCallback(tess, GLU_TESS_COMBINE_DATA,(GLvoid (*)()) &combineData);
1402                                 glNewList(display_list, GL_COMPILE);
1403                                 gluTessBeginPolygon(tess, &invented);
1404                                 gluTessBeginContour(tess);
1405                                 MaskCoord *c = &edge[0];
1406                                 for( int i=edge.size(); --i>=0; ++c )
1407                                         gluTessVertex(tess, (GLdouble *)c, c);
1408                                 gluTessEndContour(tess);
1409                                 gluTessEndPolygon(tess);
1410                                 glEndList();
1411                                 glCallList(display_list);
1412                                 gluDeleteTess(tess); }
1413 #endif
1414                                 glDeleteLists(1, display_list);
1415                                 in->read_screen(0,0, w,h);
1416 //in->write_tex("/tmp/in0.ppm");
1417                                 if( r ) {
1418                                         double sig2 = -log(255.0)/(r*r);
1419                                         int n = abs((int)r) + 1;
1420                                         if( n > MAX_FEATHER+1 ) n = MAX_FEATHER+1;
1421                                         float psf[n];  // point spot fn
1422                                         for( int i=0; i<n; ++i )
1423                                                 psf[i] = exp(i*i * sig2);
1424                                         glUseProgram(feather_shader);
1425                                         glUniform1fv(glGetUniformLocation(feather_shader, "psf"), n, psf);
1426                                         glUniform1i(glGetUniformLocation(feather_shader, "n"), n);
1427                                         glUniform2f(glGetUniformLocation(feather_shader, "dxy"), tw, 0.);
1428                                         glUniform2f(glGetUniformLocation(feather_shader, "twh"), tw1, th1);
1429                                         glUniform1i(glGetUniformLocation(feather_shader, "tex"), 0);
1430                                         in->bind(0);
1431                                         out->set_output_texture();
1432                                         out->draw_texture(0,0, w,h, 0,0, w,h);
1433                                         out->unset_output_texture();
1434 //out->write_tex("/tmp/out1.ppm");
1435                                         fb_texture *t = in;  in = out;  out = t;
1436                                         glUniform2f(glGetUniformLocation(feather_shader, "dxy"), 0., th);
1437                                         in->bind(0);
1438                                         out->set_output_texture();
1439                                         out->draw_texture(0,0, w,h, 0,0, w,h);
1440                                         out->unset_output_texture();
1441 //out->write_tex("/tmp/out2.ppm");
1442                                         glUseProgram(0);
1443                                         t = in;  in = out;  out = t;
1444                                 }
1445
1446                                 glUseProgram(max_shader);
1447                                 in->bind(0);
1448 //in->write_tex("/tmp/in1.ppm");
1449 //mask->write_tex("/tmp/mask1.ppm");
1450                                 mask->bind(1);
1451                                 glUniform1i(glGetUniformLocation(max_shader, "tex"), 0);
1452                                 glUniform1i(glGetUniformLocation(max_shader, "tex1"), 1);
1453                                 glUniform1f(glGetUniformLocation(max_shader, "r"), r);
1454                                 glUniform1f(glGetUniformLocation(max_shader, "v"), v);
1455                                 glViewport(0,0, w,h);
1456                                 out->set_output_texture();
1457                                 out->draw_texture(0,0, w,h, 0,0, w,h);
1458                                 out->unset_output_texture();
1459                                 glUseProgram(0);
1460                                 fb_texture *t = mask;  mask = out;  out = t;
1461 //mask->write_tex("/tmp/mask2.ppm");
1462                         }
1463                         delete in;
1464                         delete out;
1465                 }
1466
1467                 const char *alpha_shader = BC_CModels::has_alpha(color_model) ?
1468                                 multiply_mask4_frag :
1469                         !BC_CModels::is_yuv(color_model) ?
1470                                 multiply_mask3_frag :
1471                                 multiply_yuvmask3_frag;
1472                 unsigned int shader = VFrame::make_shader(0, alpha_shader, 0);
1473                 glUseProgram(shader);
1474                 if( shader > 0 ) {
1475                         command->frame->bind_texture(0);
1476                         mask->BC_Texture::bind(1);
1477                         glUniform1i(glGetUniformLocation(shader, "tex"), 0);
1478                         glUniform1i(glGetUniformLocation(shader, "tex1"), 1);
1479                 }
1480                 command->frame->draw_texture();
1481                 command->frame->set_opengl_state(VFrame::SCREEN);
1482                 glUseProgram(0);
1483                 delete mask;
1484                 glColor4f(1, 1, 1, 1);
1485                 glActiveTexture(GL_TEXTURE0);
1486                 glDisable(GL_TEXTURE_2D);
1487                 window->enable_opengl();
1488         }
1489         command->canvas->unlock_canvas();
1490 #endif
1491 }
1492
1493
1494 void Playback3D::convert_cmodel(Canvas *canvas,
1495         VFrame *output,
1496         int dst_cmodel)
1497 {
1498 // Do nothing if colormodels are equivalent in OpenGL & the image is in hardware.
1499         int src_cmodel = output->get_color_model();
1500         if(
1501                 (output->get_opengl_state() == VFrame::TEXTURE ||
1502                 output->get_opengl_state() == VFrame::SCREEN) &&
1503 // OpenGL has no floating point.
1504                 ( (src_cmodel == BC_RGB888 && dst_cmodel == BC_RGB_FLOAT) ||
1505                   (src_cmodel == BC_RGBA8888 && dst_cmodel == BC_RGBA_FLOAT) ||
1506                   (src_cmodel == BC_RGB_FLOAT && dst_cmodel == BC_RGB888) ||
1507                   (src_cmodel == BC_RGBA_FLOAT && dst_cmodel == BC_RGBA8888) ||
1508 // OpenGL sets alpha to 1 on import
1509                   (src_cmodel == BC_RGB888 && dst_cmodel == BC_RGBA8888) ||
1510                   (src_cmodel == BC_YUV888 && dst_cmodel == BC_YUVA8888) ||
1511                   (src_cmodel == BC_RGB_FLOAT && dst_cmodel == BC_RGBA_FLOAT) )
1512                 ) return;
1513
1514
1515
1516         Playback3DCommand command;
1517         command.command = Playback3DCommand::CONVERT_CMODEL;
1518         command.canvas = canvas;
1519         command.frame = output;
1520         command.dst_cmodel = dst_cmodel;
1521         send_command(&command);
1522 }
1523
1524 void Playback3D::convert_cmodel_sync(Playback3DCommand *command)
1525 {
1526 #ifdef HAVE_GL
1527         BC_WindowBase *window =
1528                 command->canvas->lock_canvas("Playback3D::convert_cmodel_sync");
1529         if( window ) {
1530                 window->enable_opengl();
1531
1532 // Import into hardware
1533                 command->frame->enable_opengl();
1534                 command->frame->init_screen();
1535                 command->frame->to_texture();
1536
1537 // Colormodel permutation
1538                 int src_cmodel = command->frame->get_color_model();
1539                 int dst_cmodel = command->dst_cmodel;
1540                 typedef struct {
1541                         int src, dst, typ;
1542                         const char *shader;
1543                 } cmodel_shader_table_t;
1544                 enum { rgb_to_rgb, rgb_to_yuv, yuv_to_rgb, yuv_to_yuv, };
1545                 int type = -1;
1546                 static cmodel_shader_table_t cmodel_shader_table[]  = {
1547                         { BC_RGB888,    BC_YUV888,      rgb_to_yuv, rgb_to_yuv_frag  },
1548                         { BC_RGB888,    BC_YUVA8888,    rgb_to_yuv, rgb_to_yuv_frag  },
1549                         { BC_RGBA8888,  BC_RGB888,      rgb_to_rgb, rgba_to_rgb_frag },
1550                         { BC_RGBA8888,  BC_RGB_FLOAT,   rgb_to_rgb, rgba_to_rgb_frag },
1551                         { BC_RGBA8888,  BC_YUV888,      rgb_to_yuv, rgba_to_yuv_frag },
1552                         { BC_RGBA8888,  BC_YUVA8888,    rgb_to_yuv, rgb_to_yuv_frag  },
1553                         { BC_RGB_FLOAT, BC_YUV888,      rgb_to_yuv, rgb_to_yuv_frag  },
1554                         { BC_RGB_FLOAT, BC_YUVA8888,    rgb_to_yuv, rgb_to_yuv_frag  },
1555                         { BC_RGBA_FLOAT,BC_RGB888,      rgb_to_rgb, rgba_to_rgb_frag },
1556                         { BC_RGBA_FLOAT,BC_RGB_FLOAT,   rgb_to_rgb, rgba_to_rgb_frag },
1557                         { BC_RGBA_FLOAT,BC_YUV888,      rgb_to_yuv, rgba_to_yuv_frag },
1558                         { BC_RGBA_FLOAT,BC_YUVA8888,    rgb_to_yuv, rgb_to_yuv_frag  },
1559                         { BC_YUV888,    BC_RGB888,      yuv_to_rgb, yuv_to_rgb_frag  },
1560                         { BC_YUV888,    BC_RGBA8888,    yuv_to_rgb, yuv_to_rgb_frag  },
1561                         { BC_YUV888,    BC_RGB_FLOAT,   yuv_to_rgb, yuv_to_rgb_frag  },
1562                         { BC_YUV888,    BC_RGBA_FLOAT,  yuv_to_rgb, yuv_to_rgb_frag  },
1563                         { BC_YUVA8888,  BC_RGB888,      yuv_to_rgb, yuva_to_rgb_frag },
1564                         { BC_YUVA8888,  BC_RGBA8888,    yuv_to_rgb, yuv_to_rgb_frag  },
1565                         { BC_YUVA8888,  BC_RGB_FLOAT,   yuv_to_rgb, yuva_to_rgb_frag },
1566                         { BC_YUVA8888,  BC_RGBA_FLOAT,  yuv_to_rgb, yuv_to_rgb_frag  },
1567                         { BC_YUVA8888,  BC_YUV888,      yuv_to_yuv, yuva_to_yuv_frag },
1568                 };
1569
1570                 const char *shader = 0;
1571                 int table_size = sizeof(cmodel_shader_table) / sizeof(cmodel_shader_table_t);
1572                 for( int i=0; i<table_size; ++i ) {
1573                         if( cmodel_shader_table[i].src == src_cmodel &&
1574                             cmodel_shader_table[i].dst == dst_cmodel ) {
1575                                 shader = cmodel_shader_table[i].shader;
1576                                 type = cmodel_shader_table[i].typ;
1577                                 break;
1578                         }
1579                 }
1580
1581 // printf("Playback3D::convert_cmodel_sync %d %d %d shader=\n%s",
1582 // __LINE__,
1583 // command->frame->get_color_model(),
1584 // command->dst_cmodel,
1585 // shader);
1586
1587                 const char *shader_stack[9];
1588                 memset(shader_stack,0, sizeof(shader_stack));
1589                 int current_shader = 0;
1590
1591                 if( shader ) {
1592 //printf("Playback3D::convert_cmodel_sync %d\n", __LINE__);
1593                         shader_stack[current_shader++] = shader;
1594                         shader_stack[current_shader] = 0;
1595                         unsigned int shader_id = VFrame::make_shader(shader_stack);
1596
1597                         command->frame->bind_texture(0);
1598                         glUseProgram(shader_id);
1599
1600                         glUniform1i(glGetUniformLocation(shader_id, "tex"), 0);
1601                         switch( type ) {
1602                         case rgb_to_yuv:
1603                                 BC_GL_RGB_TO_YUV(shader_id);
1604                                 break;
1605                         case yuv_to_rgb:
1606                                 BC_GL_YUV_TO_RGB(shader_id);
1607                                 break;
1608                         }
1609
1610                         command->frame->draw_texture();
1611                         if(shader) glUseProgram(0);
1612                         command->frame->set_opengl_state(VFrame::SCREEN);
1613                 }
1614         }
1615
1616         command->canvas->unlock_canvas();
1617 #endif // HAVE_GL
1618 }
1619
1620 void Playback3D::do_fade(Canvas *canvas, VFrame *frame, float fade)
1621 {
1622         Playback3DCommand command;
1623         command.command = Playback3DCommand::DO_FADE;
1624         command.canvas = canvas;
1625         command.frame = frame;
1626         command.alpha = fade;
1627         send_command(&command);
1628 }
1629
1630 void Playback3D::do_fade_sync(Playback3DCommand *command)
1631 {
1632 #ifdef HAVE_GL
1633         BC_WindowBase *window =
1634                 command->canvas->lock_canvas("Playback3D::do_fade_sync");
1635         if( window ) {
1636                 window->enable_opengl();
1637                 switch( command->frame->get_opengl_state() ) {
1638                 case VFrame::RAM:
1639                         command->frame->to_texture();
1640                         break;
1641
1642                 case VFrame::SCREEN:
1643 // Read back from PBuffer
1644 // Bind context to pbuffer
1645                         command->frame->enable_opengl();
1646                         command->frame->screen_to_texture();
1647                         break;
1648                 }
1649
1650                 command->frame->enable_opengl();
1651                 command->frame->init_screen();
1652                 command->frame->bind_texture(0);
1653
1654 //              glClearColor(0.0, 0.0, 0.0, 0.0);
1655 //              glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
1656                 glDisable(GL_BLEND);
1657                 unsigned int frag_shader = 0;
1658                 switch(command->frame->get_color_model())
1659                 {
1660 // For the alpha colormodels, the native function seems to multiply the
1661 // components by the alpha instead of just the alpha.
1662                         case BC_RGBA8888:
1663                         case BC_RGBA_FLOAT:
1664                         case BC_YUVA8888:
1665                                 frag_shader = VFrame::make_shader(0, fade_rgba_frag, 0);
1666                                 break;
1667
1668                         case BC_RGB888:
1669                                 glEnable(GL_BLEND);
1670                                 glBlendFunc(GL_SRC_ALPHA, GL_ZERO);
1671                                 glColor4f(command->alpha, command->alpha, command->alpha, 1);
1672                                 break;
1673
1674
1675                         case BC_YUV888:
1676                                 frag_shader = VFrame::make_shader(0, fade_yuv_frag, 0);
1677                                 break;
1678                 }
1679
1680
1681                 if( frag_shader ) {
1682                         glUseProgram(frag_shader);
1683                         int variable;
1684                         if((variable = glGetUniformLocation(frag_shader, "tex")) >= 0)
1685                                 glUniform1i(variable, 0);
1686                         if((variable = glGetUniformLocation(frag_shader, "alpha")) >= 0)
1687                                 glUniform1f(variable, command->alpha);
1688                 }
1689
1690                 command->frame->draw_texture();
1691                 command->frame->set_opengl_state(VFrame::SCREEN);
1692
1693                 if(frag_shader)
1694                 {
1695                         glUseProgram(0);
1696                 }
1697
1698                 glColor4f(1, 1, 1, 1);
1699                 glDisable(GL_BLEND);
1700         }
1701         command->canvas->unlock_canvas();
1702 #endif
1703 }
1704
1705
1706 int Playback3D::run_plugin(Canvas *canvas, PluginClient *client)
1707 {
1708         Playback3DCommand command;
1709         command.command = Playback3DCommand::PLUGIN;
1710         command.canvas = canvas;
1711         command.plugin_client = client;
1712         return send_command(&command);
1713 }
1714
1715 void Playback3D::run_plugin_sync(Playback3DCommand *command)
1716 {
1717         BC_WindowBase *window =
1718                 command->canvas->lock_canvas("Playback3D::run_plugin_sync");
1719         if( window ) {
1720                 window->enable_opengl();
1721                 command->result = ((PluginVClient*)command->plugin_client)->handle_opengl();
1722         }
1723         command->canvas->unlock_canvas();
1724 }
1725
1726