diff options
| author | José Fonseca <jfonseca@vmware.com> | 2009-06-30 15:07:10 +0100 |
|---|---|---|
| committer | José Fonseca <jfonseca@vmware.com> | 2009-06-30 15:33:53 +0100 |
| commit | 4ffe2844a46bcd69c0f2c95f04da97e83899e831 (patch) | |
| tree | 86e9bd1438206bf4f1e702f6fd9f018f578efaea /src/gallium/include/pipe/p_defines.h | |
| parent | 4e43126a5915b1233c89c61400c8270d23d48ea3 (diff) | |
gallium: New PIPE_BUFFER_USAGE_FLUSH_EXPLICIT flag for buffer_flush_mapped_range.
When a buffer was mapped for write and no explicit flush range was provided
the existing semantics were that the whole buffer would be flushed, mostly
for backwards compatability with non map-buffer-range aware code.
However if the buffer was mapped/unmapped with nothing really written --
something that often happens with the vbo -- we were unnecessarily assuming
that the whole buffer was written.
The new PIPE_BUFFER_USAGE_FLUSH_EXPLICIT flag (based from ARB_map_buffer_range
's GL_MAP_FLUSH_EXPLICIT_BIT flag) allows to clearly distinguish the
legacy usage from the nothing written usage.
Diffstat (limited to 'src/gallium/include/pipe/p_defines.h')
| -rw-r--r-- | src/gallium/include/pipe/p_defines.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/gallium/include/pipe/p_defines.h b/src/gallium/include/pipe/p_defines.h index ab57ed73c4..5c16884c16 100644 --- a/src/gallium/include/pipe/p_defines.h +++ b/src/gallium/include/pipe/p_defines.h @@ -217,6 +217,7 @@ enum pipe_transfer_usage { #define PIPE_BUFFER_USAGE_CONSTANT (1 << 7) #define PIPE_BUFFER_USAGE_DISCARD (1 << 8) #define PIPE_BUFFER_USAGE_DONTBLOCK (1 << 9) +#define PIPE_BUFFER_USAGE_FLUSH_EXPLICIT (1 << 10) /**< See pipe_screen::buffer_flush_mapped_range */ /** Pipe driver custom usage flags should be greater or equal to this value */ #define PIPE_BUFFER_USAGE_CUSTOM (1 << 16) |