diff --git a/src/compiler/nir/nir_lower_tex.c b/src/compiler/nir/nir_lower_tex.c
index d5962826dee..3d4623b9d0e 100644
--- a/src/compiler/nir/nir_lower_tex.c
+++ b/src/compiler/nir/nir_lower_tex.c
@@ -397,6 +397,16 @@ convert_yuv_to_rgb(nir_builder *b, nir_tex_instr *tex,
    nir_def *m1 = nir_f2fN(b, nir_build_imm(b, 4, 32, m.v[1]), bit_size);
    nir_def *m2 = nir_f2fN(b, nir_build_imm(b, 4, 32, m.v[2]), bit_size);
 
+   if (options->lower_sx10_external & (1u << texture_index)) {
+      m0 = nir_fmul_imm(b, m0, 65535.0f / 1023.0f);
+      m1 = nir_fmul_imm(b, m1, 65535.0f / 1023.0f);
+      m2 = nir_fmul_imm(b, m2, 65535.0f / 1023.0f);
+   } else if (options->lower_sx12_external & (1u << texture_index)) {
+      m0 = nir_fmul_imm(b, m0, 65535.0f / 4095.0f);
+      m1 = nir_fmul_imm(b, m1, 65535.0f / 4095.0f);
+      m2 = nir_fmul_imm(b, m2, 65535.0f / 4095.0f);
+   }
+
    nir_def *result =
       nir_ffma(b, y, m0, nir_ffma(b, u, m1, nir_ffma(b, v, m2, offset)));