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Diffstat (limited to 'mesalib/docs/specs/MESA_release_buffers.spec')
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1 files changed, 85 insertions, 0 deletions
diff --git a/mesalib/docs/specs/MESA_release_buffers.spec b/mesalib/docs/specs/MESA_release_buffers.spec new file mode 100644 index 000000000..52d1e5a9c --- /dev/null +++ b/mesalib/docs/specs/MESA_release_buffers.spec @@ -0,0 +1,85 @@ +Name + + MESA_release_buffers + +Name Strings + + GLX_MESA_release_buffers + +Contact + + Brian Paul (brian.paul 'at' tungstengraphics.com) + +Status + + Shipping since Mesa 2.0 in October, 1996. + +Version + + Last Modified Date: 8 June 2000 + +Number + + 217 + +Dependencies + + OpenGL 1.0 or later is required. + GLX 1.0 or later is required. + +Overview + + Mesa's implementation of GLX is entirely implemented on the client side. + Therefore, Mesa cannot immediately detect when an X window or pixmap is + destroyed in order to free any ancillary data associated with the window + or pixmap. + + The glxMesaReleaseBuffers() function can be used to explicitly indicate + when the back color buffer, depth buffer, stencil buffer, and/or accumu- + lation buffer associated with a drawable can be freed. + +IP Status + + Open-source; freely implementable. + +Issues + + None. + +New Procedures and Functions + + Bool glXReleaseBuffersMESA( Display *dpy, GLXDrawable d ); + +New Tokens + + None. + +Additions to Chapter 3 of the GLX 1.3 Specification (Functions and Errors) + + The function + + Bool glXReleaseBuffersMESA( Display *dpy, GLXDrawable d ); + + causes all software ancillary buffers (back buffer, depth, stencil, + accum, etc) associated with the named drawable to be immediately + deallocated. True is returned if <d> is a valid Mesa GLX drawable, + else False is returned. After calling glXReleaseBuffersMESA, the + drawable should no longer be used for GL rendering. Results of + attempting to do so are undefined. + + +GLX Protocol + + None, since this is a client-side operation. + +Errors + + None. + +New State + + None. + +Revision History + + 8 June 2000 - initial specification |