diff --git a/src/gallium/auxiliary/tgsi/tgsi_strings.c b/src/gallium/auxiliary/tgsi/tgsi_strings.c
index fc29a23..b1995c0 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_strings.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_strings.c
@@ -166,6 +166,8 @@ const char *tgsi_interpolate_locations[TGSI_INTERPOLATE_LOC_COUNT] =
    "SAMPLE",
 };
 
+const char *tgsi_invariant_name = "INVARIANT";
+
 const char *tgsi_primitive_names[PIPE_PRIM_MAX] =
 {
    "POINTS",
diff --git a/src/gallium/auxiliary/tgsi/tgsi_strings.h b/src/gallium/auxiliary/tgsi/tgsi_strings.h
index 71e7437..1ecfcbc 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_strings.h
+++ b/src/gallium/auxiliary/tgsi/tgsi_strings.h
@@ -52,6 +52,8 @@ extern const char *tgsi_interpolate_names[TGSI_INTERPOLATE_COUNT];
 
 extern const char *tgsi_interpolate_locations[TGSI_INTERPOLATE_LOC_COUNT];
 
+extern const char *tgsi_invariant_name;
+
 extern const char *tgsi_primitive_names[PIPE_PRIM_MAX];
 
 extern const char *tgsi_fs_coord_origin_names[2];
diff --git a/src/gallium/auxiliary/tgsi/tgsi_text.c b/src/gallium/auxiliary/tgsi/tgsi_text.c
index 9d73668..3378148 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_text.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_text.c
@@ -1393,10 +1393,6 @@ static boolean parse_declaration( struct translate_ctx *ctx )
             break;
          }
       }
-      if (i == TGSI_INTERPOLATE_COUNT) {
-         report_error( ctx, "Expected semantic or interpolate attribute" );
-         return FALSE;
-      }
    }
 
    cur = ctx->cur;
@@ -1416,6 +1412,20 @@ static boolean parse_declaration( struct translate_ctx *ctx )
       }
    }
 
+   cur = ctx->cur;
+   eat_opt_white( &cur );
+   if (*cur == ',' && !is_vs_input) {
+      cur++;
+      eat_opt_white( &cur );
+      if (str_match_nocase_whole( &cur, tgsi_invariant_name )) {
+         decl.Declaration.Invariant = 1;
+         ctx->cur = cur;
+      } else {
+         report_error( ctx, "Expected semantic, interpolate attribute, or invariant \"%.10s...\" ", cur );
+         return FALSE;
+      }
+   }
+
    advance = tgsi_build_full_declaration(
       &decl,
       ctx->tokens_cur,
diff --git a/src/virgl_hw.h b/src/virgl_hw.h
index 7cbbeee..b27b698 100644
--- a/src/virgl_hw.h
+++ b/src/virgl_hw.h
@@ -290,6 +290,7 @@ struct virgl_caps_v2 {
         int32_t max_texture_gather_offset;
         uint32_t texture_buffer_offset_alignment;
         uint32_t uniform_buffer_offset_alignment;
+        uint32_t tgsi_invariant;
 };
 
 union virgl_caps {
diff --git a/src/vrend_renderer.c b/src/vrend_renderer.c
index 32a4961..8f5be15 100644
--- a/src/vrend_renderer.c
+++ b/src/vrend_renderer.c
@@ -6871,6 +6871,8 @@ void vrend_renderer_fill_caps(uint32_t set, uint32_t version,
 
    if (gl_ver >= 43)
       glGetIntegerv(GL_TEXTURE_BUFFER_OFFSET_ALIGNMENT, &caps->v2.texture_buffer_offset_alignment);
+
+   caps->v2.tgsi_invariant = 1;
 }
 
 GLint64 vrend_renderer_get_timestamp(void)
diff --git a/src/vrend_shader.c b/src/vrend_shader.c
index 3f5fb22..bab603e 100644
--- a/src/vrend_shader.c
+++ b/src/vrend_shader.c
@@ -37,6 +37,7 @@ extern int vrend_dump_shaders;
 /* start convert of tgsi to glsl */
 
 #define INTERP_PREFIX "               "
+#define INVARI_PREFIX "invariant"
 
 struct vrend_shader_io {
    unsigned                name;
@@ -46,6 +47,7 @@ struct vrend_shader_io {
    unsigned                interpolate;
    unsigned first;
    bool                 centroid;
+   bool                    invariant;
    bool glsl_predefined_no_emit;
    bool glsl_no_index;
    bool glsl_gl_in;
@@ -468,6 +470,7 @@ iter_declaration(struct tgsi_iterate_context *iter,
       ctx->outputs[i].name = decl->Semantic.Name;
       ctx->outputs[i].sid = decl->Semantic.Index;
       ctx->outputs[i].interpolate = decl->Interp.Interpolate;
+      ctx->outputs[i].invariant = decl->Declaration.Invariant;
       ctx->outputs[i].first = decl->Range.First;
       ctx->outputs[i].glsl_predefined_no_emit = false;
       ctx->outputs[i].glsl_no_index = false;
@@ -2501,7 +2504,10 @@ static char *emit_ios(struct dump_ctx *ctx, char *glsl_hdr)
             } else
                prefix = "";
             /* ugly leave spaces to patch interp in later */
-            snprintf(buf, 255, "%sout vec4 %s;\n", prefix, ctx->outputs[i].glsl_name);
+            snprintf(buf, 255, "%s%sout vec4 %s;\n", prefix, ctx->outputs[i].invariant ? "invariant " : "", ctx->outputs[i].glsl_name);
+            STRCAT_WITH_RET(glsl_hdr, buf);
+         } else if (ctx->outputs[i].invariant) {
+            snprintf(buf, 255, "invariant %s;\n", ctx->outputs[i].glsl_name);
             STRCAT_WITH_RET(glsl_hdr, buf);
          }
       }