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virgl: Assume sRGB write control for older guest kernels or virglrenderer hosts

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When the host virglrenderer is an older version that doesn't check the sRGB write
control feature, or when the guest kernel doesn't support CAPS v2, then the guest
will only report support for GL 2.1 on a GL 3.3 host, even though it was supporting
3.3 with earlier guest mesa versions.

By also checking the host feature check version this regression can be avoided.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=110921
Fixes: 2845939d6a
   virgl: Set sRGB write control CAP based on host capabilities

Signed-off-by: Gert Wollny <gert.wollny@collabora.com>
Reviewed-by: Chia-I Wu <olvaffe@gmail.com>
(cherry-picked from commit 2b87753a84)
This commit is contained in:
Gert Wollny 2019-06-17 08:44:14 +02:00 • committed by Gert Wollny
parent 8b26c9159d
commit 4e3f82cde4
1 changed files with 2 additions and 1 deletions
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3
src/gallium/drivers/virgl/virgl_screen.c
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@ -347,7 +347,8 @@ virgl_get_param(struct pipe_screen *screen, enum pipe_cap param)
case PIPE_CAP_NATIVE_FENCE_FD:
return vscreen->vws->supports_fences;
case PIPE_CAP_DEST_SURFACE_SRGB_CONTROL:
return vscreen->caps.caps.v2.capability_bits & VIRGL_CAP_SRGB_WRITE_CONTROL;
return (vscreen->caps.caps.v2.capability_bits & VIRGL_CAP_SRGB_WRITE_CONTROL) ||
(vscreen->caps.caps.v2.host_feature_check_version < 1);
default:
return u_pipe_screen_get_param_defaults(screen, param);
}