diff options
| author | Alexandros Frantzis <[email protected]> | 2019-03-18 16:30:29 +0200 |
|---|---|---|
| committer | Alexandros Frantzis <[email protected]> | 2019-03-27 15:46:14 +0200 |
| commit | 3bccf702118dda542da3b96990fd0bcca97f9a89 (patch) | |
| tree | 90704adecb080134d883af33643025d634976ea9 /src/gallium/drivers/virgl/virgl_screen.c | |
| parent | d6a07732c9c155c73f7d2cddc10faa7eab768df9 (diff) | |
virgl: Fake MSAA when max samples is 1
When the host is running on softpipe/llvmpipe the maximum number of
samples for multisampling is 1. GL 3.0 requires at least 4 samples, and
softpipe/llvmpipe get around this by enabling PIPE_CAP_FAKE_SW_MSAA.
This patch mimics softpipe/llvmpipe behavior in virgl by enabling the
same PIPE_CAP_FAKE_SW_MSAA workaround when the max sample count reported
by the host is 1. This change allows virgl on a softpipe/llvmpipe host
to advertise support for GL 3.0 and beyond.
Signed-off-by: Alexandros Frantzis <[email protected]>
Reviewed-By: Gert Wollny <[email protected]>
Diffstat (limited to 'src/gallium/drivers/virgl/virgl_screen.c')
| -rw-r--r-- | src/gallium/drivers/virgl/virgl_screen.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/gallium/drivers/virgl/virgl_screen.c b/src/gallium/drivers/virgl/virgl_screen.c index 66e520eab8a..1ad8863bfca 100644 --- a/src/gallium/drivers/virgl/virgl_screen.c +++ b/src/gallium/drivers/virgl/virgl_screen.c @@ -265,9 +265,12 @@ virgl_get_param(struct pipe_screen *screen, enum pipe_cap param) if (vscreen->caps.caps.v1.glsl_level < 150) return vscreen->caps.caps.v2.max_vertex_attribs; return 32; + case PIPE_CAP_FAKE_SW_MSAA: + /* If the host supports only one sample (e.g., if it is using softpipe), + * fake multisampling to able to advertise higher GL versions. */ + return (vscreen->caps.caps.v1.max_samples == 1) ? 1 : 0; case PIPE_CAP_TEXTURE_GATHER_SM5: case PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT: - case PIPE_CAP_FAKE_SW_MSAA: case PIPE_CAP_TEXTURE_GATHER_OFFSETS: case PIPE_CAP_TGSI_VS_WINDOW_SPACE_POSITION: case PIPE_CAP_MULTI_DRAW_INDIRECT: |