From a094c1527080e413528b2b17839d4399ae0b69da Mon Sep 17 00:00:00 2001
From: Faith Ekstrand <faith.ekstrand@collabora.com>
Date: Wed, 3 Dec 2025 14:00:19 -0500
Subject: [PATCH] pan/bi: Stop pretending to support f16 gl_Position

It's always a full vec4 in the varying buffer.

Reviewed-by: Lorenzo Rossi <lorenzo.rossi@collabora.com>
Acked-by: Eric R. Smith <eric.smith@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/38681>
---
 src/panfrost/compiler/bifrost/bifrost_compile.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/panfrost/compiler/bifrost/bifrost_compile.c b/src/panfrost/compiler/bifrost/bifrost_compile.c
index 3812e558486..34a7b96bc65 100644
--- a/src/panfrost/compiler/bifrost/bifrost_compile.c
+++ b/src/panfrost/compiler/bifrost/bifrost_compile.c
@@ -1115,8 +1115,8 @@ bi_emit_store_vary(bi_builder *b, nir_intrinsic_instr *instr)
 
    if (b->shader->arch <= 8 && b->shader->idvs == BI_IDVS_POSITION) {
       /* Bifrost position shaders have a fast path */
-      assert(T == nir_type_float16 || T == nir_type_float32);
-      unsigned regfmt = (T == nir_type_float16) ? 0 : 1;
+      assert(T == nir_type_float32);
+      unsigned regfmt = 1;
       unsigned identity = (b->shader->arch == 6) ? 0x688 : 0;
       unsigned snap4 = 0x5E;
       uint32_t format = identity | (snap4 << 12) | (regfmt << 24);