nir/lower_tex: Add a lower_txd_clamp option
Some of us want to lower all TXD with min_lod regardless of whether or
not it's shadow or cube or whatever.
Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Reviewed-by: Emma Anholt <emma@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/25000>
diff --git a/src/compiler/nir/nir.h b/src/compiler/nir/nir.h
index f958f1e..51c9408 100644
--- a/src/compiler/nir/nir.h
+++ b/src/compiler/nir/nir.h
@@ -5678,6 +5678,11 @@
bool lower_txd;
/**
+ * If true, lower nir_texop_txd when it uses min_lod.
+ */
+ bool lower_txd_clamp;
+
+ /**
* If true, lower nir_texop_txb that try to use shadow compare and min_lod
* at the same time to a nir_texop_lod, some math, and nir_texop_tex.
*/
diff --git a/src/compiler/nir/nir_lower_tex.c b/src/compiler/nir/nir_lower_tex.c
index c454018..83f3ebb 100644
--- a/src/compiler/nir/nir_lower_tex.c
+++ b/src/compiler/nir/nir_lower_tex.c
@@ -1612,6 +1612,7 @@
if (tex->op == nir_texop_txd &&
(options->lower_txd ||
+ (options->lower_txd_clamp && has_min_lod) ||
(options->lower_txd_shadow && tex->is_shadow) ||
(options->lower_txd_shadow_clamp && tex->is_shadow && has_min_lod) ||
(options->lower_txd_offset_clamp && has_offset && has_min_lod) ||
