11591693c7b415e9869157c711fe11263c95d74eDavid LiName 21591693c7b415e9869157c711fe11263c95d74eDavid Li 31591693c7b415e9869157c711fe11263c95d74eDavid Li MESA_resize_buffers 41591693c7b415e9869157c711fe11263c95d74eDavid Li 51591693c7b415e9869157c711fe11263c95d74eDavid LiName Strings 61591693c7b415e9869157c711fe11263c95d74eDavid Li 71591693c7b415e9869157c711fe11263c95d74eDavid Li GL_MESA_resize_buffers 81591693c7b415e9869157c711fe11263c95d74eDavid Li 91591693c7b415e9869157c711fe11263c95d74eDavid LiContact 101591693c7b415e9869157c711fe11263c95d74eDavid Li 111591693c7b415e9869157c711fe11263c95d74eDavid Li Brian Paul (brian.paul 'at' tungstengraphics.com) 121591693c7b415e9869157c711fe11263c95d74eDavid Li 131591693c7b415e9869157c711fe11263c95d74eDavid LiStatus 141591693c7b415e9869157c711fe11263c95d74eDavid Li 151591693c7b415e9869157c711fe11263c95d74eDavid Li Shipping (since Mesa version 2.2) 161591693c7b415e9869157c711fe11263c95d74eDavid Li 171591693c7b415e9869157c711fe11263c95d74eDavid LiVersion 181591693c7b415e9869157c711fe11263c95d74eDavid Li 191591693c7b415e9869157c711fe11263c95d74eDavid Li 201591693c7b415e9869157c711fe11263c95d74eDavid LiNumber 211591693c7b415e9869157c711fe11263c95d74eDavid Li 221591693c7b415e9869157c711fe11263c95d74eDavid Li 196 231591693c7b415e9869157c711fe11263c95d74eDavid Li 241591693c7b415e9869157c711fe11263c95d74eDavid LiDependencies 251591693c7b415e9869157c711fe11263c95d74eDavid Li 261591693c7b415e9869157c711fe11263c95d74eDavid Li Mesa 2.2 or later is required. 271591693c7b415e9869157c711fe11263c95d74eDavid Li 281591693c7b415e9869157c711fe11263c95d74eDavid LiOverview 291591693c7b415e9869157c711fe11263c95d74eDavid Li 301591693c7b415e9869157c711fe11263c95d74eDavid Li Mesa is often used as a client library with no integration with 311591693c7b415e9869157c711fe11263c95d74eDavid Li the computer's window system (an X server, for example). And since 321591693c7b415e9869157c711fe11263c95d74eDavid Li Mesa does not have an event loop nor window system callbacks, it 331591693c7b415e9869157c711fe11263c95d74eDavid Li cannot properly respond to window system events. In particular, 341591693c7b415e9869157c711fe11263c95d74eDavid Li Mesa cannot automatically detect when a window has been resized. 351591693c7b415e9869157c711fe11263c95d74eDavid Li 361591693c7b415e9869157c711fe11263c95d74eDavid Li Mesa's glViewport command queries the current window size and updates 371591693c7b415e9869157c711fe11263c95d74eDavid Li its internal data structors accordingly. This normally works fine 381591693c7b415e9869157c711fe11263c95d74eDavid Li since most applications call glViewport in responce to window size 391591693c7b415e9869157c711fe11263c95d74eDavid Li changes. 401591693c7b415e9869157c711fe11263c95d74eDavid Li 411591693c7b415e9869157c711fe11263c95d74eDavid Li In some situations, however, the application may not call glViewport 421591693c7b415e9869157c711fe11263c95d74eDavid Li when a window size changes but would still like Mesa to adjust to 431591693c7b415e9869157c711fe11263c95d74eDavid Li the new window size. This extension exports a new function to solve 441591693c7b415e9869157c711fe11263c95d74eDavid Li this problem. 451591693c7b415e9869157c711fe11263c95d74eDavid Li 461591693c7b415e9869157c711fe11263c95d74eDavid LiNew Procedures and Functions 471591693c7b415e9869157c711fe11263c95d74eDavid Li 481591693c7b415e9869157c711fe11263c95d74eDavid Li void glResizeBuffersMESA( void ) 491591693c7b415e9869157c711fe11263c95d74eDavid Li 501591693c7b415e9869157c711fe11263c95d74eDavid LiNew Tokens 511591693c7b415e9869157c711fe11263c95d74eDavid Li 521591693c7b415e9869157c711fe11263c95d74eDavid Li none 531591693c7b415e9869157c711fe11263c95d74eDavid Li 541591693c7b415e9869157c711fe11263c95d74eDavid LiAdditions to the OpenGL Specification (no particular section) 551591693c7b415e9869157c711fe11263c95d74eDavid Li 561591693c7b415e9869157c711fe11263c95d74eDavid Li The glResizeBuffersMESA command may be called when the client 571591693c7b415e9869157c711fe11263c95d74eDavid Li determines that a window has been resized. Calling 581591693c7b415e9869157c711fe11263c95d74eDavid Li glResizeBuffersMESA causes Mesa to query the current window size 591591693c7b415e9869157c711fe11263c95d74eDavid Li and adjust its internal data structures. This may include 601591693c7b415e9869157c711fe11263c95d74eDavid Li reallocating depth, stencil, alpha and accumulation buffers. 611591693c7b415e9869157c711fe11263c95d74eDavid Li 621591693c7b415e9869157c711fe11263c95d74eDavid LiAdditions to the AGL/GLX/WGL Specifications 631591693c7b415e9869157c711fe11263c95d74eDavid Li 641591693c7b415e9869157c711fe11263c95d74eDavid Li None 651591693c7b415e9869157c711fe11263c95d74eDavid Li 661591693c7b415e9869157c711fe11263c95d74eDavid LiErrors 671591693c7b415e9869157c711fe11263c95d74eDavid Li 681591693c7b415e9869157c711fe11263c95d74eDavid Li INVALID_OPERATION is generated if ResizeBuffersMESA is called betweeen 691591693c7b415e9869157c711fe11263c95d74eDavid Li Begin and End. 701591693c7b415e9869157c711fe11263c95d74eDavid Li 711591693c7b415e9869157c711fe11263c95d74eDavid LiNew State 721591693c7b415e9869157c711fe11263c95d74eDavid Li 731591693c7b415e9869157c711fe11263c95d74eDavid Li None. 741591693c7b415e9869157c711fe11263c95d74eDavid Li 751591693c7b415e9869157c711fe11263c95d74eDavid LiNew Implementation Dependent State 761591693c7b415e9869157c711fe11263c95d74eDavid Li 771591693c7b415e9869157c711fe11263c95d74eDavid Li None. 781591693c7b415e9869157c711fe11263c95d74eDavid Li 791591693c7b415e9869157c711fe11263c95d74eDavid LiRevision History 801591693c7b415e9869157c711fe11263c95d74eDavid Li 811591693c7b415e9869157c711fe11263c95d74eDavid Li * Revision 1.0 - Initial specification 82