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authorMarek Olšák <[email protected]>2014-02-06 19:24:23 +0100
committerMarek Olšák <[email protected]>2014-02-25 16:07:33 +0100
commitdca350201e00c7cf1cfb009158f4abf27fbc96d2 (patch)
tree8e331dfaa4ab2b623ee559f14fb1f678be6ba5df /src/mapi/u_current.h
parent86e68b0f1f7f5ff58b38653978acaa736ae3d01c (diff)
mesa: allow buffers to be mapped multiple times
OpenGL allows a buffer to be mapped only once, but we also map buffers internally, e.g. in the software primitive restart fallback, for PBOs, vbo_get_minmax_index, etc. This has always been a problem, but it will be a bigger problem with persistent buffer mappings, which will prevent all Mesa functions from mapping buffers for internal purposes. This adds a driver interface to core Mesa which supports multiple buffer mappings and allows 2 mappings: one for the GL user and one for Mesa. Note that Gallium supports an unlimited number of buffer and texture mappings, so it's not really an issue for Gallium. v2: fix unmapping in xm_dd.c, remove the GL errors there v3: fix the intel driver (by Fredrik) Reviewed-by: Fredrik Höglund <[email protected]>
Diffstat (limited to 'src/mapi/u_current.h')
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