Mesa (main): crocus: Clamp VS point sizes to the HW limits as required.

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Module: Mesa
Branch: main
Commit: 3077d968568213bfe2990ddc4ada2763d9701418
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=3077d968568213bfe2990ddc4ada2763d9701418

Author: Emma Anholt <emma at anholt.net>
Date:   Thu Dec 16 12:26:53 2021 -0800

crocus: Clamp VS point sizes to the HW limits as required.

Fixes piglit vs-point-size-zero.

Reviewed-by: Adam Jackson <ajax at redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14238>

---

 src/gallium/drivers/crocus/ci/crocus-g41-fails.txt | 3 ---
 src/gallium/drivers/crocus/crocus_program.c        | 3 +++
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/gallium/drivers/crocus/ci/crocus-g41-fails.txt b/src/gallium/drivers/crocus/ci/crocus-g41-fails.txt
index 5f6961fe1ca..feccae27bc0 100644
--- a/src/gallium/drivers/crocus/ci/crocus-g41-fails.txt
+++ b/src/gallium/drivers/crocus/ci/crocus-g41-fails.txt
@@ -113,9 +113,6 @@ spec@!opengl 1.4 at gl-1.4-polygon-offset,Fail
 spec@!opengl 2.0 at max-samplers,Fail
 spec@!opengl 2.0 at max-samplers border,Fail
 
-# "Fail: nothing rendered."
-spec@!opengl 2.0 at vs-point_size-zero,Fail
-
 # Regression from i965
 # "data not copied"
 spec at arb_copy_buffer@targets,Fail
diff --git a/src/gallium/drivers/crocus/crocus_program.c b/src/gallium/drivers/crocus/crocus_program.c
index 91958295d31..24fcaf179b7 100644
--- a/src/gallium/drivers/crocus/crocus_program.c
+++ b/src/gallium/drivers/crocus/crocus_program.c
@@ -2701,6 +2701,9 @@ crocus_create_uncompiled_shader(struct pipe_context *ctx,
    NIR_PASS_V(nir, brw_nir_lower_storage_image, devinfo);
    NIR_PASS_V(nir, crocus_lower_storage_image_derefs);
 
+   if (nir->info.stage != MESA_SHADER_FRAGMENT && nir->info.stage != MESA_SHADER_COMPUTE)
+      NIR_PASS_V(nir, nir_lower_point_size, 1.0, 255.0);
+
    nir_sweep(nir);
 
    ish->program_id = get_new_program_id(screen);