3 files changed, 6 insertions, 0 deletions
diff --git a/src/compiler/glsl/builtin_variables.cpp b/src/compiler/glsl/builtin_variables.cpp
index be593e9f433..db8418bbc7f 100644
--- a/src/compiler/glsl/builtin_variables.cpp
+++ b/src/compiler/glsl/builtin_variables.cpp
@@ -1193,6 +1193,9 @@ builtin_variable_generator::generate_fs_special_vars()
    if (state->is_version(110, 300))
       add_output(FRAG_RESULT_DEPTH, float_t, "gl_FragDepth");
 
+   if (state->EXT_frag_depth_enable)
+      add_output(FRAG_RESULT_DEPTH, float_t, "gl_FragDepthEXT");
+
    if (state->ARB_shader_stencil_export_enable) {
       ir_variable *const var =
          add_output(FRAG_RESULT_STENCIL, int_t, "gl_FragStencilRefARB");
diff --git a/src/compiler/glsl/glsl_parser_extras.cpp b/src/compiler/glsl/glsl_parser_extras.cpp
index c4da79a32f8..f6a9c9a051d 100644
--- a/src/compiler/glsl/glsl_parser_extras.cpp
+++ b/src/compiler/glsl/glsl_parser_extras.cpp
@@ -684,6 +684,7 @@ static const _mesa_glsl_extension _mesa_glsl_supported_extensions[] = {
    EXT(AMD_vertex_shader_viewport_index),
    EXT(ANDROID_extension_pack_es31a),
    EXT(EXT_blend_func_extended),
+   EXT(EXT_frag_depth),
    EXT(EXT_draw_buffers),
    EXT(EXT_clip_cull_distance),
    EXT(EXT_geometry_point_size),
diff --git a/src/compiler/glsl/glsl_parser_extras.h b/src/compiler/glsl/glsl_parser_extras.h
index 66a954f880b..9f4a309ca21 100644
--- a/src/compiler/glsl/glsl_parser_extras.h
+++ b/src/compiler/glsl/glsl_parser_extras.h
@@ -741,6 +741,8 @@ struct _mesa_glsl_parse_state {
    bool EXT_clip_cull_distance_warn;
    bool EXT_draw_buffers_enable;
    bool EXT_draw_buffers_warn;
+   bool EXT_frag_depth_enable;
+   bool EXT_frag_depth_warn;
    bool EXT_geometry_point_size_enable;
    bool EXT_geometry_point_size_warn;
    bool EXT_geometry_shader_enable;