diff options
| author | Rob Clark <rob@ti.com> | 2011-02-16 05:45:51 +0300 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2011-02-23 04:09:13 +0300 |
| commit | 9da12b6aeb8bde8cc3aecba12b0ec1114d6dcfea (patch) | |
| tree | bc4050f4033eaa4b43c44c22e04f68504644a212 /drivers/gpu/drm/drm_fb_helper.c | |
| parent | a250b9fdc53a286d32e22f21170382a46b3a3ef5 (diff) | |
| download | linux-9da12b6aeb8bde8cc3aecba12b0ec1114d6dcfea.tar.xz | |
drm: psuedocolor support for ARGB modes
If there is an alpha channel, need to mask in 1's in the alpha channel
to prevent the fb from being completely transparent.
Signed-off-by: Rob Clark <rob@ti.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/drm_fb_helper.c')
| -rw-r--r-- | drivers/gpu/drm/drm_fb_helper.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c index 6977a1ce9d98..d421f9d58d46 100644 --- a/drivers/gpu/drm/drm_fb_helper.c +++ b/drivers/gpu/drm/drm_fb_helper.c @@ -627,6 +627,11 @@ static int setcolreg(struct drm_crtc *crtc, u16 red, u16 green, value = (red << info->var.red.offset) | (green << info->var.green.offset) | (blue << info->var.blue.offset); + if (info->var.transp.length > 0) { + u32 mask = (1 << info->var.transp.length) - 1; + mask <<= info->var.transp.offset; + value |= mask; + } palette[regno] = value; return 0; } |