1 files changed, 66 insertions, 11 deletions

diff --git a/mesalib/src/glsl/glsl_parser_extras.h b/mesalib/src/glsl/glsl_parser_extras.h
index 0b208f6ca..46e0784ba 100644
--- a/mesalib/src/glsl/glsl_parser_extras.h
+++ b/mesalib/src/glsl/glsl_parser_extras.h
@@ -56,6 +56,19 @@ struct glsl_switch_state {
    bool is_switch_innermost; // if switch stmt is closest to break, ...
 };
 
+const char *
+glsl_compute_version_string(void *mem_ctx, bool is_es, unsigned version);
+
+typedef struct YYLTYPE {
+   int first_line;
+   int first_column;
+   int last_line;
+   int last_column;
+   unsigned source;
+} YYLTYPE;
+# define YYLTYPE_IS_DECLARED 1
+# define YYLTYPE_IS_TRIVIAL 1
+
 struct _mesa_glsl_parse_state {
    _mesa_glsl_parse_state(struct gl_context *_ctx, GLenum target,
 			  void *mem_ctx);
@@ -77,6 +90,55 @@ struct _mesa_glsl_parse_state {
       ralloc_free(mem);
    }
 
+   /**
+    * Generate a string representing the GLSL version currently being compiled
+    * (useful for error messages).
+    */
+   const char *get_version_string()
+   {
+      return glsl_compute_version_string(this, this->es_shader,
+                                         this->language_version);
+   }
+
+   /**
+    * Determine whether the current GLSL version is sufficiently high to
+    * support a certain feature.
+    *
+    * \param required_glsl_version is the desktop GLSL version that is
+    * required to support the feature, or 0 if no version of desktop GLSL
+    * supports the feature.
+    *
+    * \param required_glsl_es_version is the GLSL ES version that is required
+    * to support the feature, or 0 if no version of GLSL ES suports the
+    * feature.
+    */
+   bool is_version(unsigned required_glsl_version,
+                   unsigned required_glsl_es_version)
+   {
+      unsigned required_version = this->es_shader ?
+         required_glsl_es_version : required_glsl_version;
+      return required_version != 0
+         && this->language_version >= required_version;
+   }
+
+   bool check_version(unsigned required_glsl_version,
+                      unsigned required_glsl_es_version,
+                      YYLTYPE *locp, const char *fmt, ...) PRINTFLIKE(5, 6);
+
+   bool check_precision_qualifiers_allowed(YYLTYPE *locp)
+   {
+      return check_version(130, 100, locp,
+                           "precision qualifiers are forbidden");
+   }
+
+   bool check_bitwise_operations_allowed(YYLTYPE *locp)
+   {
+      return check_version(130, 300, locp, "bit-wise operations are forbidden");
+   }
+
+   void process_version_directive(YYLTYPE *locp, int version,
+                                  const char *ident);
+
    struct gl_context *const ctx;
    void *scanner;
    exec_list translation_unit;
@@ -88,7 +150,6 @@ struct _mesa_glsl_parse_state {
 
    bool es_shader;
    unsigned language_version;
-   const char *version_string;
    enum _mesa_glsl_parser_targets target;
 
    /**
@@ -129,6 +190,10 @@ struct _mesa_glsl_parse_state {
 
       /* ARB_draw_buffers */
       unsigned MaxDrawBuffers;
+
+      /* 3.00 ES */
+      int MinProgramTexelOffset;
+      int MaxProgramTexelOffset;
    } Const;
 
    /**
@@ -217,16 +282,6 @@ struct _mesa_glsl_parse_state {
    unsigned num_builtins_to_link;
 };
 
-typedef struct YYLTYPE {
-   int first_line;
-   int first_column;
-   int last_line;
-   int last_column;
-   unsigned source;
-} YYLTYPE;
-# define YYLTYPE_IS_DECLARED 1
-# define YYLTYPE_IS_TRIVIAL 1
-
 # define YYLLOC_DEFAULT(Current, Rhs, N)			\
 do {								\
    if (N)							\