diff options
Diffstat (limited to 'src/gallium/drivers/radeon/radeon_winsys.h')
| -rw-r--r-- | src/gallium/drivers/radeon/radeon_winsys.h | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/src/gallium/drivers/radeon/radeon_winsys.h b/src/gallium/drivers/radeon/radeon_winsys.h index 49f8bb279e5..a56ff75ad24 100644 --- a/src/gallium/drivers/radeon/radeon_winsys.h +++ b/src/gallium/drivers/radeon/radeon_winsys.h @@ -76,6 +76,15 @@ enum radeon_bo_usage { /* bitfield */ RADEON_USAGE_SYNCHRONIZED = 8 }; +enum radeon_transfer_flags { + /* Indicates that the caller will unmap the buffer. + * + * Not unmapping buffers is an important performance optimization for + * OpenGL (avoids kernel overhead for frequently mapped buffers). + */ + RADEON_TRANSFER_TEMPORARY = (PIPE_TRANSFER_DRV_PRV << 0), +}; + #define RADEON_SPARSE_PAGE_SIZE (64 * 1024) enum ring_type { @@ -294,9 +303,12 @@ struct radeon_winsys { * Map the entire data store of a buffer object into the client's address * space. * + * Callers are expected to unmap buffers again if and only if the + * RADEON_TRANSFER_TEMPORARY flag is set in \p usage. + * * \param buf A winsys buffer object to map. * \param cs A command stream to flush if the buffer is referenced by it. - * \param usage A bitmask of the PIPE_TRANSFER_* flags. + * \param usage A bitmask of the PIPE_TRANSFER_* and RADEON_TRANSFER_* flags. * \return The pointer at the beginning of the buffer. */ void *(*buffer_map)(struct pb_buffer *buf, |