diff options
| author | Brian Paul <[email protected]> | 2017-07-21 10:37:36 -0600 |
|---|---|---|
| committer | Brian Paul <[email protected]> | 2017-07-25 15:40:24 -0600 |
| commit | 91735e2d4a25df0685e5f4c8f0a064f9d58c6b8e (patch) | |
| tree | fe7bc1ef952fbc3067faa836287c27da54e7697d /src/gallium/drivers/svga/svga_state_fs.c | |
| parent | 71d3b69b239c2e2eb8b154229c5defc013b7c7b5 (diff) | |
svga: implement MSAA alpha_to_one feature
The device doesn't directly support this feature so we implement it with
additional shader code which sets the color output(s) w component to
1.0 (or max_int or max_uint).
Fixes 16 Piglit ext_framebuffer_multisample/*alpha-to-one* tests.
v2: only support unorm/float buffers, not int/uint, per Roland.
Reviewed-by: Roland Scheidegger <[email protected]>
Reviewed-by: Charmaine Lee <[email protected]>
Diffstat (limited to 'src/gallium/drivers/svga/svga_state_fs.c')
| -rw-r--r-- | src/gallium/drivers/svga/svga_state_fs.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/gallium/drivers/svga/svga_state_fs.c b/src/gallium/drivers/svga/svga_state_fs.c index bf452163049..5e568993fed 100644 --- a/src/gallium/drivers/svga/svga_state_fs.c +++ b/src/gallium/drivers/svga/svga_state_fs.c @@ -25,6 +25,7 @@ #include "util/u_inlines.h" #include "pipe/p_defines.h" +#include "util/u_format.h" #include "util/u_math.h" #include "util/u_memory.h" #include "util/u_bitmask.h" @@ -234,6 +235,8 @@ make_fs_key(const struct svga_context *svga, */ key->fs.white_fragments = svga->curr.blend->need_white_fragments; + key->fs.alpha_to_one = svga->curr.blend->alpha_to_one; + #ifdef DEBUG /* * We expect a consistent set of samplers and sampler views. |