3 files changed, 9 insertions, 0 deletions
diff --git a/src/compiler/glsl/builtin_variables.cpp b/src/compiler/glsl/builtin_variables.cpp
index 76a22cee29c..6a772911f76 100644
--- a/src/compiler/glsl/builtin_variables.cpp
+++ b/src/compiler/glsl/builtin_variables.cpp
@@ -878,6 +878,9 @@ builtin_variable_generator::generate_constants()
       add_const("gl_MaxTessControlUniformComponents", state->Const.MaxTessControlUniformComponents);
       add_const("gl_MaxTessEvaluationUniformComponents", state->Const.MaxTessEvaluationUniformComponents);
    }
+
+   if (state->is_version(450, 320))
+      add_const("gl_MaxSamples", state->Const.MaxSamples);
 }
 
 
diff --git a/src/compiler/glsl/glsl_parser_extras.cpp b/src/compiler/glsl/glsl_parser_extras.cpp
index 0ce89ceb3a8..e592e5cd55c 100644
--- a/src/compiler/glsl/glsl_parser_extras.cpp
+++ b/src/compiler/glsl/glsl_parser_extras.cpp
@@ -179,6 +179,9 @@ _mesa_glsl_parse_state::_mesa_glsl_parse_state(struct gl_context *_ctx,
    this->Const.MaxTessControlUniformComponents = ctx->Const.Program[MESA_SHADER_TESS_CTRL].MaxUniformComponents;
    this->Const.MaxTessEvaluationUniformComponents = ctx->Const.Program[MESA_SHADER_TESS_EVAL].MaxUniformComponents;
 
+   /* GL 4.5 / OES_sample_variables */
+   this->Const.MaxSamples = ctx->Const.MaxSamples;
+
    this->current_function = NULL;
    this->toplevel_ir = NULL;
    this->found_return = false;
diff --git a/src/compiler/glsl/glsl_parser_extras.h b/src/compiler/glsl/glsl_parser_extras.h
index 86008b48519..6185d14a20d 100644
--- a/src/compiler/glsl/glsl_parser_extras.h
+++ b/src/compiler/glsl/glsl_parser_extras.h
@@ -461,6 +461,9 @@ struct _mesa_glsl_parse_state {
       unsigned MaxTessControlTotalOutputComponents;
       unsigned MaxTessControlUniformComponents;
       unsigned MaxTessEvaluationUniformComponents;
+
+      /* GL 4.5 / OES_sample_variables */
+      unsigned MaxSamples;
    } Const;
 
    /**