diff options
| author | Lyude <lyude@redhat.com> | 2017-06-02 20:45:36 -0400 |
|---|---|---|
| committer | Emil Velikov <emil.l.velikov@gmail.com> | 2017-06-14 10:40:22 +0100 |
| commit | 98564569d057be6aa474ce1db64aba1692fa752f (patch) | |
| tree | 7ddc5c0be6e0b9781ff8ff3c7edade0cc2aa840e /src/gallium/drivers/nouveau | |
| parent | 6348a02e275c44164029070c717aa623120a0ad0 (diff) | |
nvc0: disable BGRA8 images on Fermi
BGRA8 image stores on Fermi don't work, which results in breaking
PBO downloads, such that they always return 0x0. Discovered this
through a glamor bug, and confirmed it does indeed break a good number
of piglit tests such as spec/arb_pixel_buffer_object/pbo-read-argb8888
Fixes: 8e7893eb53213 ("nvc0: add support for BGRA8 images")
Signed-off-by: Lyude <lyude@redhat.com>
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>
Cc: mesa-stable@lists.freedesktop.org
(cherry picked from commit 245912b684b862d47cde10052b137d76a55d0bd3)
Diffstat (limited to 'src/gallium/drivers/nouveau')
| -rw-r--r-- | src/gallium/drivers/nouveau/nvc0/nvc0_screen.c | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c b/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c index e82f86909d5..e3cbf551e64 100644 --- a/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c +++ b/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c @@ -90,11 +90,20 @@ nvc0_screen_is_format_supported(struct pipe_screen *pscreen, bindings &= ~(PIPE_BIND_LINEAR | PIPE_BIND_SHARED); - if (bindings & PIPE_BIND_SHADER_IMAGE && sample_count > 1 && - nouveau_screen(pscreen)->class_3d >= GM107_3D_CLASS) { - /* MS images are currently unsupported on Maxwell because they have to - * be handled explicitly. */ - return false; + if (bindings & PIPE_BIND_SHADER_IMAGE) { + if (sample_count > 1 && + nouveau_screen(pscreen)->class_3d >= GM107_3D_CLASS) { + /* MS images are currently unsupported on Maxwell because they have to + * be handled explicitly. */ + return false; + } + + if (format == PIPE_FORMAT_B8G8R8A8_UNORM && + nouveau_screen(pscreen)->class_3d < NVE4_3D_CLASS) { + /* This should work on Fermi, but for currently unknown reasons it + * does not and results in breaking reads from pbos. */ + return false; + } } return (( nvc0_format_table[format].usage | |