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nir: support lowering clipdist to arrays

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This allows us to make sure clipdist is emitted as a scalar array rather
than two vec4s. This matches SPIR-V semantics, and will be useful for
Zink.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
This commit is contained in:
Erik Faye-Lund
2019-10-02 16:19:08 -04:00
parent 28543f1640
commit eb3047c094
7 changed files with 89 additions and 44 deletions
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10
src/compiler/nir/nir.h
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@@ -3906,9 +3906,13 @@ bool nir_lower_idiv(nir_shader *shader);
bool nir_lower_input_attachments(nir_shader *shader, bool use_fragcoord_sysval);
bool nir_lower_clip_vs(nir_shader *shader, unsigned ucp_enables, bool use_vars);
bool nir_lower_clip_gs(nir_shader *shader, unsigned ucp_enables);
bool nir_lower_clip_fs(nir_shader *shader, unsigned ucp_enables);
bool nir_lower_clip_vs(nir_shader *shader, unsigned ucp_enables,
bool use_vars,
bool use_clipdist_array);
bool nir_lower_clip_gs(nir_shader *shader, unsigned ucp_enables,
bool use_clipdist_array);
bool nir_lower_clip_fs(nir_shader *shader, unsigned ucp_enables,
bool use_clipdist_array);
bool nir_lower_clip_cull_distance_arrays(nir_shader *nir);
void nir_lower_point_size_mov(nir_shader *shader,