1Name 2 3 MESA_resize_buffers 4 5Name Strings 6 7 GL_MESA_resize_buffers 8 9Contact 10 11 Brian Paul (brian.paul 'at' tungstengraphics.com) 12 13Status 14 15 Shipping (since Mesa version 2.2) 16 17Version 18 19 20Number 21 22 196 23 24Dependencies 25 26 Mesa 2.2 or later is required. 27 28Overview 29 30 Mesa is often used as a client library with no integration with 31 the computer's window system (an X server, for example). And since 32 Mesa does not have an event loop nor window system callbacks, it 33 cannot properly respond to window system events. In particular, 34 Mesa cannot automatically detect when a window has been resized. 35 36 Mesa's glViewport command queries the current window size and updates 37 its internal data structors accordingly. This normally works fine 38 since most applications call glViewport in responce to window size 39 changes. 40 41 In some situations, however, the application may not call glViewport 42 when a window size changes but would still like Mesa to adjust to 43 the new window size. This extension exports a new function to solve 44 this problem. 45 46New Procedures and Functions 47 48 void glResizeBuffersMESA( void ) 49 50New Tokens 51 52 none 53 54Additions to the OpenGL Specification (no particular section) 55 56 The glResizeBuffersMESA command may be called when the client 57 determines that a window has been resized. Calling 58 glResizeBuffersMESA causes Mesa to query the current window size 59 and adjust its internal data structures. This may include 60 reallocating depth, stencil, alpha and accumulation buffers. 61 62Additions to the AGL/GLX/WGL Specifications 63 64 None 65 66Errors 67 68 INVALID_OPERATION is generated if ResizeBuffersMESA is called betweeen 69 Begin and End. 70 71New State 72 73 None. 74 75New Implementation Dependent State 76 77 None. 78 79Revision History 80 81 * Revision 1.0 - Initial specification 82