diff options
| author | Louis-Francis Ratté-Boulianne <[email protected]> | 2019-10-12 02:59:53 -0400 |
|---|---|---|
| committer | Marge Bot <[email protected]> | 2020-03-03 12:28:23 +0000 |
| commit | babf7357d24b88a548f50aebca74c6ffd8f81d52 (patch) | |
| tree | 2ba894362336a57b38fa0eb4d5d8381b665eec67 | |
| parent | 4ce339e74118786893b5138db37c09c4f2d830fd (diff) | |
gallium: add PIPE_CAP_VIEWPORT_TRANSFORM_LOWERED
This new capability indicates that the nir_lower_viewport_transform
pass is enabled. This also means that the gl_Position value is
modified and should be lowered for transform feedback, if needed.
Signed-off-by: Louis-Francis Ratté-Boulianne <[email protected]>
Reviewed-by: Alyssa Rosenzweig <[email protected]>
Acked-by: Daniel Stone <[email protected]>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/2433>
| -rw-r--r-- | src/gallium/auxiliary/util/u_screen.c | 3 | ||||
| -rw-r--r-- | src/gallium/include/pipe/p_defines.h | 1 | ||||
| -rw-r--r-- | src/mesa/state_tracker/st_extensions.c | 5 |
3 files changed, 9 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/util/u_screen.c b/src/gallium/auxiliary/util/u_screen.c index 510c46aca5f..d94f082ba96 100644 --- a/src/gallium/auxiliary/util/u_screen.c +++ b/src/gallium/auxiliary/util/u_screen.c @@ -417,6 +417,9 @@ u_pipe_screen_get_param_defaults(struct pipe_screen *pscreen, case PIPE_CAP_PACKED_STREAM_OUTPUT: return 1; + case PIPE_CAP_VIEWPORT_TRANSFORM_LOWERED: + return 0; + default: unreachable("bad PIPE_CAP_*"); } diff --git a/src/gallium/include/pipe/p_defines.h b/src/gallium/include/pipe/p_defines.h index aad67725f36..7ae6dd4c9f5 100644 --- a/src/gallium/include/pipe/p_defines.h +++ b/src/gallium/include/pipe/p_defines.h @@ -916,6 +916,7 @@ enum pipe_cap PIPE_CAP_FRONTEND_NOOP, PIPE_CAP_NIR_IMAGES_AS_DEREF, PIPE_CAP_PACKED_STREAM_OUTPUT, + PIPE_CAP_VIEWPORT_TRANSFORM_LOWERED, }; /** diff --git a/src/mesa/state_tracker/st_extensions.c b/src/mesa/state_tracker/st_extensions.c index d44c2c4ee9d..229319af690 100644 --- a/src/mesa/state_tracker/st_extensions.c +++ b/src/mesa/state_tracker/st_extensions.c @@ -331,6 +331,11 @@ void st_init_limits(struct pipe_screen *screen, * because it can actually optimize SSBO access. */ options->LowerBufferInterfaceBlocks = !prefer_nir; + + if (sh == MESA_SHADER_VERTEX) { + if (screen->get_param(screen, PIPE_CAP_VIEWPORT_TRANSFORM_LOWERED)) + options->LowerBuiltinVariablesXfb |= VARYING_BIT_POS; + } } c->MaxUserAssignableUniformLocations = |