nir: Add a lowering pass for UYVY textures
Similar with support for YUYV but with byte order difference in sampler
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
diff --git a/src/compiler/nir/nir.h b/src/compiler/nir/nir.h
index ab7ba14..1b4e470 100644
--- a/src/compiler/nir/nir.h
+++ b/src/compiler/nir/nir.h
@@ -2449,6 +2449,7 @@
unsigned lower_y_uv_external;
unsigned lower_y_u_v_external;
unsigned lower_yx_xuxv_external;
+ unsigned lower_xy_uxvx_external;
/**
* To emulate certain texture wrap modes, this can be used
diff --git a/src/compiler/nir/nir_lower_tex.c b/src/compiler/nir/nir_lower_tex.c
index 4ef8195..65681de 100644
--- a/src/compiler/nir/nir_lower_tex.c
+++ b/src/compiler/nir/nir_lower_tex.c
@@ -301,6 +301,20 @@
nir_channel(b, xuxv, 3));
}
+static void
+lower_xy_uxvx_external(nir_builder *b, nir_tex_instr *tex)
+{
+ b->cursor = nir_after_instr(&tex->instr);
+
+ nir_ssa_def *y = sample_plane(b, tex, 0);
+ nir_ssa_def *uxvx = sample_plane(b, tex, 1);
+
+ convert_yuv_to_rgb(b, tex,
+ nir_channel(b, y, 1),
+ nir_channel(b, uxvx, 0),
+ nir_channel(b, uxvx, 2));
+}
+
/*
* Emits a textureLod operation used to replace an existing
* textureGrad instruction.
@@ -760,6 +774,10 @@
progress = true;
}
+ if ((1 << tex->texture_index) & options->lower_xy_uxvx_external) {
+ lower_xy_uxvx_external(b, tex);
+ progress = true;
+ }
if (sat_mask) {
saturate_src(b, tex, sat_mask);