tgsi: added tgsi_is_shadow_target() helper

diff --git a/src/gallium/auxiliary/tgsi/tgsi_util.c b/src/gallium/auxiliary/tgsi/tgsi_util.c
index e5b8427a03073720ffe46a751fb501b4dd49fbfa..653e650dc4c6fd10fb513eb3f1e58a341e62effa 100644 (file)
--- a/src/gallium/auxiliary/tgsi/tgsi_util.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_util.c
@@ -462,3 +462,21 @@ tgsi_util_get_texture_coord_dim(int tgsi_tex, int *shadow_or_sample)
 
    return dim;
 }
+
+
+boolean
+tgsi_is_shadow_target(unsigned target)
+{
+   switch (target) {
+   case TGSI_TEXTURE_SHADOW1D:
+   case TGSI_TEXTURE_SHADOW2D:
+   case TGSI_TEXTURE_SHADOWRECT:
+   case TGSI_TEXTURE_SHADOW1D_ARRAY:
+   case TGSI_TEXTURE_SHADOW2D_ARRAY:
+   case TGSI_TEXTURE_SHADOWCUBE:
+   case TGSI_TEXTURE_SHADOWCUBE_ARRAY:
+      return TRUE;
+   default:
+      return FALSE;
+   }
+}

diff --git a/src/gallium/auxiliary/tgsi/tgsi_util.h b/src/gallium/auxiliary/tgsi/tgsi_util.h
index deb1ecc66f97dc4433887d91769eedfc406a810f..6175d95fcd66debe76104a803dd4925bf19c9d74 100644 (file)
--- a/src/gallium/auxiliary/tgsi/tgsi_util.h
+++ b/src/gallium/auxiliary/tgsi/tgsi_util.h
@@ -82,6 +82,9 @@ tgsi_util_get_src_from_ind(const struct tgsi_ind_register *reg);
 int
 tgsi_util_get_texture_coord_dim(int tgsi_tex, int *shadow_or_sample);
 
+boolean
+tgsi_is_shadow_target(unsigned target);
+
 #if defined __cplusplus
 }
 #endif