From 588fa884d212eba5ffbc69fda75db37d7c77214c Mon Sep 17 00:00:00 2001 From: Marek Olšák Date: Wed, 9 Feb 2011 01:10:11 +0100 Subject: gallium: notify drivers about possible changes in user buffer contents Also implement the redefine_user_buffer hook in the drivers. --- src/gallium/docs/source/context.rst | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'src/gallium/docs') diff --git a/src/gallium/docs/source/context.rst b/src/gallium/docs/source/context.rst index da847262c13..04a39511287 100644 --- a/src/gallium/docs/source/context.rst +++ b/src/gallium/docs/source/context.rst @@ -392,6 +392,22 @@ be flushed on write or unmap. Flushes must be requested with ``transfer_flush_region``. Flush ranges are relative to the mapped range, not the beginning of the resource. + + +.. _redefine_user_buffer: + +redefine_user_buffer +%%%%%%%%%%%%%%%%%%%% + +This function notifies a driver that the user buffer content has been changed. +The updated region starts at ``offset`` and is ``size`` bytes large. +The ``offset`` is relative to the pointer specified in ``user_buffer_create``. +While uploading the user buffer, the driver is allowed not to upload +the memory outside of this region. +The width0 is redefined to ``MAX2(width0, offset+size)``. + + + .. _pipe_transfer: PIPE_TRANSFER -- cgit v1.2.3