1 Name 2 3 MESA_resize_buffers 4 5 Name Strings 6 7 GL_MESA_resize_buffers 8 9 Contact 10 11 Brian Paul (brian.paul 'at' tungstengraphics.com) 12 13 Status 14 15 Shipping (since Mesa version 2.2) 16 17 Version 18 19 20 Number 21 22 196 23 24 Dependencies 25 26 Mesa 2.2 or later is required. 27 28 Overview 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 response 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 46 New Procedures and Functions 47 48 void glResizeBuffersMESA( void ) 49 50 New Tokens 51 52 none 53 54 Additions 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 62 Additions to the AGL/GLX/WGL Specifications 63 64 None 65 66 Errors 67 68 INVALID_OPERATION is generated if glResizeBuffersMESA is called between 69 Begin and End. 70 71 New State 72 73 None. 74 75 New Implementation Dependent State 76 77 None. 78 79 Revision History 80 81 * Revision 1.0 - Initial specification 82
