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| author | Marek Olšák <maraeo@gmail.com> | 2009-12-17 06:02:28 +0100 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2009-12-23 02:14:04 +0100 |
| commit | 46c64d4bfa01cda7d58c514164f8b127ab6741b7 (patch) | |
| tree | 92f3439c7b761d199714cb84bf09a937582b0c6e /drivers/gpu/drm/radeon/r100.c | |
| parent | drm/radeon/kms: enable memory clock reading on legacy (V2) (diff) | |
| download | linux-46c64d4bfa01cda7d58c514164f8b127ab6741b7.tar.xz linux-46c64d4bfa01cda7d58c514164f8b127ab6741b7.zip | |
drm/radeon/kms: allow rendering while no colorbuffer is set on r300
Because hardware cannot disable all colorbuffers directly to do depth-only
rendering, a user should:
- disable reading from a colorbuffer in blending
- disable fastfill
- set the color channel mask to 0 to prevent writing to a colorbuffer
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/r100.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/r100.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/r100.c b/drivers/gpu/drm/radeon/r100.c index 84e5df766d3f..71727460968f 100644 --- a/drivers/gpu/drm/radeon/r100.c +++ b/drivers/gpu/drm/radeon/r100.c @@ -2881,6 +2881,10 @@ int r100_cs_track_check(struct radeon_device *rdev, struct r100_cs_track *track) for (i = 0; i < track->num_cb; i++) { if (track->cb[i].robj == NULL) { + if (!(track->fastfill || track->color_channel_mask || + track->blend_read_enable)) { + continue; + } DRM_ERROR("[drm] No buffer for color buffer %d !\n", i); return -EINVAL; } |