diff options
| author | Iago Toral Quiroga <[email protected]> | 2018-01-09 09:29:17 +0100 |
|---|---|---|
| committer | Iago Toral Quiroga <[email protected]> | 2018-01-10 08:21:02 +0100 |
| commit | dae856eced1d4de966b0e1cfc5f2ed201240571c (patch) | |
| tree | 97e2a4459c09c7ad47183318bbdb84f710c15dfd | |
| parent | 4317c848b9c8f5a650815e20c792fc9f3564b68e (diff) | |
i965: lower gl_PatchVerticesIn to a uniform
We want this here instead of nir_lower_system_values because for
Vulkan we don't want this lowering to take place.
v2: do not try to handle it as a system value directly for the SPIR-V
path. In GL we rather handle it as a uniform like we do for the
GLSL path (Jason).
v3: do this also for the TessEval stage (Jason)
Reviewed-by: Jason Ekstrand <[email protected]>
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_program.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_program.c b/src/mesa/drivers/dri/i965/brw_program.c index 5b168c25e3d..f6c7e4515c4 100644 --- a/src/mesa/drivers/dri/i965/brw_program.c +++ b/src/mesa/drivers/dri/i965/brw_program.c @@ -88,6 +88,14 @@ brw_create_nir(struct brw_context *brw, } nir_validate_shader(nir); + /* Lower PatchVerticesIn from system value to uniform. This needs to + * happen before brw_preprocess_nir, since that will lower system values. + */ + if ((stage == MESA_SHADER_TESS_CTRL && brw->screen->devinfo.gen >= 8) || + stage == MESA_SHADER_TESS_EVAL) { + brw_nir_lower_patch_vertices_in_to_uniform(nir); + } + nir = brw_preprocess_nir(brw->screen->compiler, nir); if (stage == MESA_SHADER_FRAGMENT) { |