tgsi_to_nir: Translate TGSI_INTERPOLATE_COLOR as INTERP_MODE_NONE

Translating TGSI_INTERPOLATE_COLOR as INTERP_MODE_SMOOTH made
it for drivers impossible to have flatshaded color inputs.

Translate it to INTERP_MODE_NONE which drivers interpret as
smooth or flat depending on flatshading state.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=111467

Fixes: 770faf54 ("tgsi_to_nir: Improve interpolation modes.")
Signed-off-by: Danylo Piliaiev <danylo.piliaiev@globallogic.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Eric Anholt <eric@anholt.net>

diff --git a/src/gallium/auxiliary/nir/tgsi_to_nir.c b/src/gallium/auxiliary/nir/tgsi_to_nir.c
index 140b011290fdf53fd8db5d5164046a8f8b6c7133..b5ca49336afde49643e10d2c42b1060b162f407c 100644 (file)
--- a/src/gallium/auxiliary/nir/tgsi_to_nir.c
+++ b/src/gallium/auxiliary/nir/tgsi_to_nir.c
@@ -218,7 +218,7 @@ ttn_translate_interp_mode(unsigned tgsi_interp)
    case TGSI_INTERPOLATE_PERSPECTIVE:
       return INTERP_MODE_SMOOTH;
    case TGSI_INTERPOLATE_COLOR:
-      return INTERP_MODE_SMOOTH;
+      return INTERP_MODE_NONE;
    default:
       unreachable("bad TGSI interpolation mode");
    }