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drm/radeon/kms: manage r300 CMASK RAM access and allow CMASK clear

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The CMASK RAM is for colorbuffer compression (used in conjunction
with MSAA). Only one user (filp) can access it.

The CMASK RAM access is managed in the same way as Hyper-Z, but there is
a separate ioctl, because an app that uses MSAA does not necessarily
have to use zbuffering.

Signed-off-by: Marek Olšák <maraeo@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Marek Olšák
2011-01-05 05:46:48 +01:00
committed by Dave Airlie
parent 2f299d5de0
commit 9eba4a93ce
6 changed files with 41 additions and 14 deletions
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include/drm/radeon_drm.h
+1
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@@ -906,6 +906,7 @@ struct drm_radeon_cs {
#define RADEON_INFO_ACCEL_WORKING2 0x05
#define RADEON_INFO_TILING_CONFIG 0x06
#define RADEON_INFO_WANT_HYPERZ 0x07
#define RADEON_INFO_WANT_CMASK 0x08 /* get access to CMASK on r300 */
struct drm_radeon_info {
uint32_t request;