1 /*****************************************************************************
2 * opengl.c: OpenGL video output
3 *****************************************************************************
4 * Copyright (C) 2004 the VideoLAN team
7 * Authors: Cyril Deguet <asmax@videolan.org>
8 * Gildas Bazin <gbazin@videolan.org>
9 * Eric Petit <titer@m0k.org>
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
24 *****************************************************************************/
26 /*****************************************************************************
28 *****************************************************************************/
29 #include <errno.h> /* ENOMEM */
30 #include <stdlib.h> /* malloc(), free() */
37 #include <OpenGL/gl.h>
38 #include <OpenGL/glext.h>
40 /* On OS X, use GL_TEXTURE_RECTANGLE_EXT instead of GL_TEXTURE_2D.
41 This allows sizes which are not powers of 2 */
42 #define VLCGL_TARGET GL_TEXTURE_RECTANGLE_EXT
44 /* OS X OpenGL supports YUV. Hehe. */
45 #define VLCGL_FORMAT GL_YCBCR_422_APPLE
46 #define VLCGL_TYPE GL_UNSIGNED_SHORT_8_8_APPLE
50 #define VLCGL_TARGET GL_TEXTURE_2D
53 #ifndef GL_UNSIGNED_SHORT_5_6_5
54 #define GL_UNSIGNED_SHORT_5_6_5 0x8363
56 //#define VLCGL_RGB_FORMAT GL_RGB
57 //#define VLCGL_RGB_TYPE GL_UNSIGNED_SHORT_5_6_5
60 //#define VLCGL_RGB_FORMAT GL_RGB
61 //#define VLCGL_RGB_TYPE GL_UNSIGNED_BYTE
64 #define VLCGL_RGB_FORMAT GL_RGBA
65 #define VLCGL_RGB_TYPE GL_UNSIGNED_BYTE
69 #define YCBCR_MESA 0x8757
71 #ifndef UNSIGNED_SHORT_8_8_MESA
72 #define UNSIGNED_SHORT_8_8_MESA 0x85BA
74 #define VLCGL_YUV_FORMAT YCBCR_MESA
75 #define VLCGL_YUV_TYPE UNSIGNED_SHORT_8_8_MESA
77 /* Use RGB on Win32/GLX */
78 #define VLCGL_FORMAT VLCGL_RGB_FORMAT
79 #define VLCGL_TYPE VLCGL_RGB_TYPE
80 //#define VLCGL_FORMAT VLCGL_YUV_FORMAT
81 //#define VLCGL_TYPE VLCGL_YUV_TYPE
84 #ifndef GL_CLAMP_TO_EDGE
85 # define GL_CLAMP_TO_EDGE 0x812F
89 #define OPENGL_EFFECT_NONE 1
90 #define OPENGL_EFFECT_CUBE 2
91 #define OPENGL_EFFECT_TRANSPARENT_CUBE 4
93 /*****************************************************************************
95 *****************************************************************************/
96 static int CreateVout ( vlc_object_t * );
97 static void DestroyVout ( vlc_object_t * );
98 static int Init ( vout_thread_t * );
99 static void End ( vout_thread_t * );
100 static int Manage ( vout_thread_t * );
101 static void Render ( vout_thread_t *, picture_t * );
102 static void DisplayVideo ( vout_thread_t *, picture_t * );
103 static int Control ( vout_thread_t *, int, va_list );
105 static inline int GetAlignedSize( int );
107 static int InitTextures( vout_thread_t * );
108 static int SendEvents( vlc_object_t *, char const *,
109 vlc_value_t, vlc_value_t, void * );
111 /*****************************************************************************
113 *****************************************************************************/
114 #define SPEED_TEXT N_( "OpenGL cube rotation speed" )
115 /*****************************************************************************
117 *****************************************************************************/
118 #define SPEED_TEXT N_( "OpenGL cube rotation speed" )
119 #define SPEED_LONGTEXT N_( "If the OpenGL cube effect is enabled, this " \
120 "controls its rotation speed." )
122 #define EFFECT_TEXT N_("Select effect")
123 #define EFFECT_LONGTEXT N_( \
124 "Allows you to select different visual effects.")
126 static char *ppsz_effects[] = {
127 "none", "cube", "transparent-cube" };
128 static char *ppsz_effects_text[] = {
129 N_("None"), N_("Cube"), N_("Transparent Cube") };
132 set_shortname( "OpenGL" );
133 set_category( CAT_VIDEO );
134 set_subcategory( SUBCAT_VIDEO_VOUT );
135 set_description( _("OpenGL video output") );
137 set_capability( "video output", 200 );
139 set_capability( "video output", 20 );
141 add_shortcut( "opengl" );
142 add_float( "opengl-cube-speed", 2.0, NULL, SPEED_TEXT,
143 SPEED_LONGTEXT, VLC_TRUE );
144 set_callbacks( CreateVout, DestroyVout );
145 add_string( "opengl-effect", "none", NULL, EFFECT_TEXT,
146 EFFECT_LONGTEXT, VLC_FALSE );
147 change_string_list( ppsz_effects, ppsz_effects_text, 0 );
150 /*****************************************************************************
151 * vout_sys_t: video output method descriptor
152 *****************************************************************************
153 * This structure is part of the video output thread descriptor.
154 * It describes the OpenGL specific properties of the output thread.
155 *****************************************************************************/
158 vout_thread_t *p_vout;
160 uint8_t *pp_buffer[2];
164 GLuint p_textures[2];
171 /*****************************************************************************
172 * CreateVout: This function allocates and initializes the OpenGL vout method.
173 *****************************************************************************/
174 static int CreateVout( vlc_object_t *p_this )
176 vout_thread_t *p_vout = (vout_thread_t *)p_this;
179 /* Allocate structure */
180 p_vout->p_sys = p_sys = malloc( sizeof( vout_sys_t ) );
183 msg_Err( p_vout, "out of memory" );
187 var_Create( p_vout, "opengl-effect", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
191 p_sys->i_tex_width = p_vout->fmt_in.i_visible_width;
192 p_sys->i_tex_height = p_vout->fmt_in.i_visible_height;
194 /* A texture must have a size aligned on a power of 2 */
195 p_sys->i_tex_width = GetAlignedSize( p_vout->fmt_in.i_visible_width );
196 p_sys->i_tex_height = GetAlignedSize( p_vout->fmt_in.i_visible_height );
199 msg_Dbg( p_vout, "Texture size: %dx%d", p_sys->i_tex_width,
200 p_sys->i_tex_height );
204 (vout_thread_t *)vlc_object_create( p_this, VLC_OBJECT_OPENGL );
205 if( p_sys->p_vout == NULL )
207 msg_Err( p_vout, "out of memory" );
210 vlc_object_attach( p_sys->p_vout, p_this );
212 p_sys->p_vout->i_window_width = p_vout->i_window_width;
213 p_sys->p_vout->i_window_height = p_vout->i_window_height;
214 p_sys->p_vout->b_fullscreen = p_vout->b_fullscreen;
215 p_sys->p_vout->render.i_width = p_vout->render.i_width;
216 p_sys->p_vout->render.i_height = p_vout->render.i_height;
217 p_sys->p_vout->render.i_aspect = p_vout->render.i_aspect;
218 p_sys->p_vout->fmt_render = p_vout->fmt_render;
219 p_sys->p_vout->fmt_in = p_vout->fmt_in;
220 p_sys->p_vout->b_scale = p_vout->b_scale;
221 p_sys->p_vout->i_alignment = p_vout->i_alignment;
223 p_sys->p_vout->p_module =
224 module_Need( p_sys->p_vout, "opengl provider", NULL, 0 );
225 if( p_sys->p_vout->p_module == NULL )
227 msg_Warn( p_vout, "No OpenGL provider found" );
228 vlc_object_detach( p_sys->p_vout );
229 vlc_object_destroy( p_sys->p_vout );
233 p_sys->f_speed = var_CreateGetFloat( p_vout, "opengl-cube-speed" );
235 p_vout->pf_init = Init;
236 p_vout->pf_end = End;
237 p_vout->pf_manage = Manage;
238 p_vout->pf_render = Render;
239 p_vout->pf_display = DisplayVideo;
240 p_vout->pf_control = Control;
242 /* Forward events from the opengl provider */
243 var_Create( p_sys->p_vout, "mouse-x", VLC_VAR_INTEGER );
244 var_Create( p_sys->p_vout, "mouse-y", VLC_VAR_INTEGER );
245 var_Create( p_sys->p_vout, "mouse-moved", VLC_VAR_BOOL );
246 var_Create( p_sys->p_vout, "mouse-clicked", VLC_VAR_INTEGER );
247 var_Create( p_sys->p_vout, "mouse-button-down", VLC_VAR_INTEGER );
248 var_Create( p_sys->p_vout, "video-on-top",
249 VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
251 var_AddCallback( p_sys->p_vout, "mouse-x", SendEvents, p_vout );
252 var_AddCallback( p_sys->p_vout, "mouse-y", SendEvents, p_vout );
253 var_AddCallback( p_sys->p_vout, "mouse-moved", SendEvents, p_vout );
254 var_AddCallback( p_sys->p_vout, "mouse-clicked", SendEvents, p_vout );
255 var_AddCallback( p_sys->p_vout, "mouse-button-down", SendEvents, p_vout );
260 /*****************************************************************************
261 * Init: initialize the OpenGL video thread output method
262 *****************************************************************************/
263 static int Init( vout_thread_t *p_vout )
265 vout_sys_t *p_sys = p_vout->p_sys;
269 p_sys->p_vout->pf_init( p_sys->p_vout );
271 #if defined( SYS_DARWIN ) || (VLCGL_FORMAT == YCBCR_MESA)
272 p_vout->output.i_chroma = VLC_FOURCC('Y','U','Y','2');
275 #elif VLCGL_FORMAT == GL_RGB
276 # if VLCGL_TYPE == GL_UNSIGNED_BYTE
277 p_vout->output.i_chroma = VLC_FOURCC('R','V','2','4');
278 p_vout->output.i_rmask = 0x000000ff;
279 p_vout->output.i_gmask = 0x0000ff00;
280 p_vout->output.i_bmask = 0x00ff0000;
283 p_vout->output.i_chroma = VLC_FOURCC('R','V','1','6');
284 p_vout->output.i_rmask = 0xf800;
285 p_vout->output.i_gmask = 0x07e0;
286 p_vout->output.i_bmask = 0x001f;
290 p_vout->output.i_chroma = VLC_FOURCC('R','V','3','2');
291 p_vout->output.i_rmask = 0x000000ff;
292 p_vout->output.i_gmask = 0x0000ff00;
293 p_vout->output.i_bmask = 0x00ff0000;
297 /* Since OpenGL can do rescaling for us, stick to the default
298 * coordinates and aspect. */
299 p_vout->output.i_width = p_vout->render.i_width;
300 p_vout->output.i_height = p_vout->render.i_height;
301 p_vout->output.i_aspect = p_vout->render.i_aspect;
303 p_vout->fmt_out = p_vout->fmt_in;
304 p_vout->fmt_out.i_chroma = p_vout->output.i_chroma;
306 /* We know the chroma, allocate one buffer which will be used
307 * directly by the decoder */
308 p_sys->pp_buffer[0] =
309 malloc( p_sys->i_tex_width * p_sys->i_tex_height * i_pixel_pitch );
310 if( !p_sys->pp_buffer[0] )
312 msg_Err( p_vout, "Out of memory" );
315 p_sys->pp_buffer[1] =
316 malloc( p_sys->i_tex_width * p_sys->i_tex_height * i_pixel_pitch );
317 if( !p_sys->pp_buffer[1] )
319 msg_Err( p_vout, "Out of memory" );
323 p_vout->p_picture[0].i_planes = 1;
324 p_vout->p_picture[0].p->p_pixels = p_sys->pp_buffer[0];
325 p_vout->p_picture[0].p->i_lines = p_vout->output.i_height;
326 p_vout->p_picture[0].p->i_visible_lines = p_vout->output.i_height;
327 p_vout->p_picture[0].p->i_pixel_pitch = i_pixel_pitch;
328 p_vout->p_picture[0].p->i_pitch = p_vout->output.i_width *
329 p_vout->p_picture[0].p->i_pixel_pitch;
330 p_vout->p_picture[0].p->i_visible_pitch = p_vout->output.i_width *
331 p_vout->p_picture[0].p->i_pixel_pitch;
333 p_vout->p_picture[0].i_status = DESTROYED_PICTURE;
334 p_vout->p_picture[0].i_type = DIRECT_PICTURE;
336 PP_OUTPUTPICTURE[ 0 ] = &p_vout->p_picture[0];
338 I_OUTPUTPICTURES = 1;
340 if( p_sys->p_vout->pf_lock &&
341 p_sys->p_vout->pf_lock( p_sys->p_vout ) )
343 msg_Warn( p_vout, "could not lock OpenGL provider" );
347 InitTextures( p_vout );
350 glDisable(GL_DEPTH_TEST);
351 glDepthMask(GL_FALSE);
352 glDisable(GL_CULL_FACE);
353 glClear( GL_COLOR_BUFFER_BIT );
355 /* Check if the user asked for useless visual effects */
356 var_Get( p_vout, "opengl-effect", &val );
357 if( !val.psz_string || !strcmp( val.psz_string, "none" ))
359 p_sys->i_effect = OPENGL_EFFECT_NONE;
361 else if( !strcmp( val.psz_string, "cube" ) )
363 p_sys->i_effect = OPENGL_EFFECT_CUBE;
365 glEnable( GL_CULL_FACE);
366 //glEnable( GL_DEPTH_TEST );
368 else if( !strcmp( val.psz_string, "transparent-cube" ) )
370 p_sys->i_effect = OPENGL_EFFECT_TRANSPARENT_CUBE;
372 glDisable( GL_DEPTH_TEST );
373 glEnable( GL_BLEND );
374 glBlendFunc( GL_SRC_ALPHA, GL_ONE );
378 msg_Warn( p_vout, "no valid opengl effect provided, using "
380 p_sys->i_effect = OPENGL_EFFECT_NONE;
382 if( val.psz_string ) free( val.psz_string );
384 if( p_sys->i_effect & ( OPENGL_EFFECT_CUBE |
385 OPENGL_EFFECT_TRANSPARENT_CUBE ) )
387 /* Set the perpective */
388 glMatrixMode( GL_PROJECTION );
390 glFrustum( -1.0, 1.0, -1.0, 1.0, 3.0, 20.0 );
391 glMatrixMode( GL_MODELVIEW );
393 glTranslatef( 0.0, 0.0, - 5.0 );
396 if( p_sys->p_vout->pf_unlock )
398 p_sys->p_vout->pf_unlock( p_sys->p_vout );
404 /*****************************************************************************
405 * End: terminate GLX video thread output method
406 *****************************************************************************/
407 static void End( vout_thread_t *p_vout )
409 vout_sys_t *p_sys = p_vout->p_sys;
411 if( p_sys->p_vout->pf_lock &&
412 p_sys->p_vout->pf_lock( p_sys->p_vout ) )
414 msg_Warn( p_vout, "could not lock OpenGL provider" );
421 if( p_sys->p_vout->pf_unlock )
423 p_sys->p_vout->pf_unlock( p_sys->p_vout );
427 /*****************************************************************************
428 * Destroy: destroy GLX video thread output method
429 *****************************************************************************
430 * Terminate an output method created by CreateVout
431 *****************************************************************************/
432 static void DestroyVout( vlc_object_t *p_this )
434 vout_thread_t *p_vout = (vout_thread_t *)p_this;
435 vout_sys_t *p_sys = p_vout->p_sys;
437 module_Unneed( p_sys->p_vout, p_sys->p_vout->p_module );
438 vlc_object_detach( p_sys->p_vout );
439 vlc_object_destroy( p_sys->p_vout );
441 /* Free the texture buffer*/
442 if( p_sys->pp_buffer[0] ) free( p_sys->pp_buffer[0] );
443 if( p_sys->pp_buffer[1] ) free( p_sys->pp_buffer[1] );
448 /*****************************************************************************
449 * Manage: handle Sys events
450 *****************************************************************************
451 * This function should be called regularly by video output thread. It returns
452 * a non null value if an error occurred.
453 *****************************************************************************/
454 static int Manage( vout_thread_t *p_vout )
456 vout_sys_t *p_sys = p_vout->p_sys;
457 int i_ret, i_fullscreen_change;
459 i_fullscreen_change = ( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE );
461 p_sys->p_vout->i_changes = p_vout->i_changes;
462 i_ret = p_sys->p_vout->pf_manage( p_sys->p_vout );
463 p_vout->i_changes = p_sys->p_vout->i_changes;
466 if( p_sys->p_vout->pf_lock &&
467 p_sys->p_vout->pf_lock( p_sys->p_vout ) )
469 msg_Warn( p_vout, "could not lock OpenGL provider" );
473 /* On OS X, we create the window and the GL view when entering
474 fullscreen - the textures have to be inited again */
475 if( i_fullscreen_change )
477 InitTextures( p_vout );
479 switch( p_sys->i_effect )
481 case OPENGL_EFFECT_CUBE:
482 glEnable( GL_CULL_FACE );
485 case OPENGL_EFFECT_TRANSPARENT_CUBE:
486 glDisable( GL_DEPTH_TEST );
487 glEnable( GL_BLEND );
488 glBlendFunc( GL_SRC_ALPHA, GL_ONE );
492 if( p_sys->i_effect & ( OPENGL_EFFECT_CUBE |
493 OPENGL_EFFECT_TRANSPARENT_CUBE ) )
495 /* Set the perpective */
496 glMatrixMode( GL_PROJECTION );
498 glFrustum( -1.0, 1.0, -1.0, 1.0, 3.0, 20.0 );
499 glMatrixMode( GL_MODELVIEW );
501 glTranslatef( 0.0, 0.0, - 5.0 );
505 if( p_sys->p_vout->pf_unlock )
507 p_sys->p_vout->pf_unlock( p_sys->p_vout );
514 /*****************************************************************************
515 * Render: render previously calculated output
516 *****************************************************************************/
517 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
519 vout_sys_t *p_sys = p_vout->p_sys;
521 /* On Win32/GLX, we do this the usual way:
522 + Fill the buffer with new content,
523 + Reload the texture,
526 On OS X with VRAM or AGP texturing, the order has to be:
527 + Reload the texture,
528 + Fill the buffer with new content,
531 (Thanks to gcc from the Arstechnica forums for the tip)
533 Therefore, we have to use two buffers and textures. On Win32/GLX,
534 we reload the texture to be displayed and use it right away. On
535 OS X, we first render, then reload the texture to be used next
538 if( p_sys->p_vout->pf_lock &&
539 p_sys->p_vout->pf_lock( p_sys->p_vout ) )
541 msg_Warn( p_vout, "could not lock OpenGL provider" );
547 i_new_index = ( p_sys->i_index + 1 ) & 1;
550 /* Update the texture */
551 glBindTexture( VLCGL_TARGET, p_sys->p_textures[i_new_index] );
552 glTexSubImage2D( VLCGL_TARGET, 0,
553 p_vout->fmt_out.i_x_offset, p_vout->fmt_out.i_y_offset,
554 p_vout->fmt_out.i_visible_width,
555 p_vout->fmt_out.i_visible_height,
556 VLCGL_FORMAT, VLCGL_TYPE, p_sys->pp_buffer[i_new_index] );
558 /* Bind to the previous texture for drawing */
559 glBindTexture( VLCGL_TARGET, p_sys->p_textures[p_sys->i_index] );
562 p_sys->i_index = i_new_index;
563 p_pic->p->p_pixels = p_sys->pp_buffer[p_sys->i_index];
566 /* Update the texture */
567 glTexSubImage2D( GL_TEXTURE_2D, 0,
568 p_vout->fmt_out.i_x_offset, p_vout->fmt_out.i_y_offset,
569 p_vout->fmt_out.i_visible_width,
570 p_vout->fmt_out.i_visible_height,
571 VLCGL_FORMAT, VLCGL_TYPE, p_sys->pp_buffer[0] );
574 if( p_sys->p_vout->pf_unlock )
576 p_sys->p_vout->pf_unlock( p_sys->p_vout );
580 /*****************************************************************************
581 * DisplayVideo: displays previously rendered output
582 *****************************************************************************/
583 static void DisplayVideo( vout_thread_t *p_vout, picture_t *p_pic )
585 vout_sys_t *p_sys = p_vout->p_sys;
586 float f_width, f_height;
588 if( p_sys->p_vout->pf_lock &&
589 p_sys->p_vout->pf_lock( p_sys->p_vout ) )
591 msg_Warn( p_vout, "could not lock OpenGL provider" );
595 /* glTexCoord works differently with GL_TEXTURE_2D and
596 GL_TEXTURE_RECTANGLE_EXT */
597 f_width = (float)p_vout->fmt_out.i_visible_width / p_sys->i_tex_width;
598 f_height = (float)p_vout->fmt_out.i_visible_height / p_sys->i_tex_height;
600 /* Why drawing here and not in Render()? Because this way, the
601 OpenGL providers can call pf_display to force redraw. Currently,
602 the OS X provider uses it to get a smooth window resizing */
604 glClear( GL_COLOR_BUFFER_BIT );
606 if( p_sys->i_effect == OPENGL_EFFECT_NONE )
608 glEnable( VLCGL_TARGET );
609 glBegin( GL_POLYGON );
610 glTexCoord2f( 0.0, 0.0 ); glVertex2f( -1.0, 1.0 );
611 glTexCoord2f( f_width, 0.0 ); glVertex2f( 1.0, 1.0 );
612 glTexCoord2f( f_width, f_height ); glVertex2f( 1.0, -1.0 );
613 glTexCoord2f( 0.0, f_height ); glVertex2f( -1.0, -1.0 );
618 glRotatef( 0.5 * p_sys->f_speed , 0.3, 0.5, 0.7 );
620 glEnable( VLCGL_TARGET );
624 glTexCoord2f( 0, 0 ); glVertex3f( - 1.0, 1.0, 1.0 );
625 glTexCoord2f( 0, f_height ); glVertex3f( - 1.0, - 1.0, 1.0 );
626 glTexCoord2f( f_width, f_height ); glVertex3f( 1.0, - 1.0, 1.0 );
627 glTexCoord2f( f_width, 0 ); glVertex3f( 1.0, 1.0, 1.0 );
630 glTexCoord2f( 0, 0 ); glVertex3f( - 1.0, 1.0, - 1.0 );
631 glTexCoord2f( 0, f_height ); glVertex3f( - 1.0, - 1.0, - 1.0 );
632 glTexCoord2f( f_width, f_height ); glVertex3f( - 1.0, - 1.0, 1.0 );
633 glTexCoord2f( f_width, 0 ); glVertex3f( - 1.0, 1.0, 1.0 );
636 glTexCoord2f( 0, 0 ); glVertex3f( 1.0, 1.0, - 1.0 );
637 glTexCoord2f( 0, f_height ); glVertex3f( 1.0, - 1.0, - 1.0 );
638 glTexCoord2f( f_width, f_height ); glVertex3f( - 1.0, - 1.0, - 1.0 );
639 glTexCoord2f( f_width, 0 ); glVertex3f( - 1.0, 1.0, - 1.0 );
642 glTexCoord2f( 0, 0 ); glVertex3f( 1.0, 1.0, 1.0 );
643 glTexCoord2f( 0, f_height ); glVertex3f( 1.0, - 1.0, 1.0 );
644 glTexCoord2f( f_width, f_height ); glVertex3f( 1.0, - 1.0, - 1.0 );
645 glTexCoord2f( f_width, 0 ); glVertex3f( 1.0, 1.0, - 1.0 );
648 glTexCoord2f( 0, 0 ); glVertex3f( - 1.0, 1.0, - 1.0 );
649 glTexCoord2f( 0, f_height ); glVertex3f( - 1.0, 1.0, 1.0 );
650 glTexCoord2f( f_width, f_height ); glVertex3f( 1.0, 1.0, 1.0 );
651 glTexCoord2f( f_width, 0 ); glVertex3f( 1.0, 1.0, - 1.0 );
654 glTexCoord2f( 0, 0 ); glVertex3f( - 1.0, - 1.0, 1.0 );
655 glTexCoord2f( 0, f_height ); glVertex3f( - 1.0, - 1.0, - 1.0 );
656 glTexCoord2f( f_width, f_height ); glVertex3f( 1.0, - 1.0, - 1.0 );
657 glTexCoord2f( f_width, 0 ); glVertex3f( 1.0, - 1.0, 1.0 );
661 glDisable( VLCGL_TARGET );
663 p_sys->p_vout->pf_swap( p_sys->p_vout );
665 if( p_sys->p_vout->pf_unlock )
667 p_sys->p_vout->pf_unlock( p_sys->p_vout );
671 int GetAlignedSize( int i_size )
673 /* Return the nearest power of 2 */
675 while( i_result < i_size )
682 /*****************************************************************************
683 * Control: control facility for the vout
684 *****************************************************************************/
685 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
687 vout_sys_t *p_sys = p_vout->p_sys;
692 return vout_vaControlDefault( p_vout, i_query, args );
695 if( p_sys->p_vout->pf_control )
696 return p_sys->p_vout->pf_control( p_sys->p_vout, i_query, args );
698 return vout_vaControlDefault( p_vout, i_query, args );
702 static int InitTextures( vout_thread_t *p_vout )
704 vout_sys_t *p_sys = p_vout->p_sys;
707 glDeleteTextures( 2, p_sys->p_textures );
708 glGenTextures( 2, p_sys->p_textures );
710 for( i_index = 0; i_index < 2; i_index++ )
712 glBindTexture( VLCGL_TARGET, p_sys->p_textures[i_index] );
714 /* Set the texture parameters */
715 glTexParameterf( VLCGL_TARGET, GL_TEXTURE_PRIORITY, 1.0 );
717 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE );
718 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE );
720 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
721 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_MIN_FILTER, GL_LINEAR );
723 glTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
726 /* Tell the driver not to make a copy of the texture but to use
728 glEnable( GL_UNPACK_CLIENT_STORAGE_APPLE );
729 glPixelStorei( GL_UNPACK_CLIENT_STORAGE_APPLE, GL_TRUE );
732 /* Use VRAM texturing */
733 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_STORAGE_HINT_APPLE,
734 GL_STORAGE_CACHED_APPLE );
736 /* Use AGP texturing */
737 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_STORAGE_HINT_APPLE,
738 GL_STORAGE_SHARED_APPLE );
742 /* Call glTexImage2D only once, and use glTexSubImage2D later */
743 glTexImage2D( VLCGL_TARGET, 0, 3, p_sys->i_tex_width,
744 p_sys->i_tex_height, 0, VLCGL_FORMAT, VLCGL_TYPE,
745 p_sys->pp_buffer[i_index] );
751 /*****************************************************************************
752 * SendEvents: forward mouse and keyboard events to the parent p_vout
753 *****************************************************************************/
754 static int SendEvents( vlc_object_t *p_this, char const *psz_var,
755 vlc_value_t oldval, vlc_value_t newval, void *_p_vout )
757 return var_Set( (vlc_object_t *)_p_vout, psz_var, newval );