diff --git a/reactos/dll/opengl/mesa/generated/glsl/glcpp/glcpp-parse.c b/reactos/dll/opengl/mesa/generated/glsl/glcpp/glcpp-parse.c
index 9b263d10208..2df5f0a2a4d 100644
--- a/reactos/dll/opengl/mesa/generated/glsl/glcpp/glcpp-parse.c
+++ b/reactos/dll/opengl/mesa/generated/glsl/glcpp/glcpp-parse.c
@@ -3494,10 +3494,6 @@ glcpp_parser_create (const struct gl_extensions *extensions, int api)
 	      add_builtin_define(parser, "GL_EXT_texture_array", 1);
 	   }
 
-	   if (extensions->ARB_fragment_coord_conventions)
-	      add_builtin_define(parser, "GL_ARB_fragment_coord_conventions",
-				 1);
-
 	   if (extensions->ARB_shader_texture_lod)
 	      add_builtin_define(parser, "GL_ARB_shader_texture_lod", 1);
 
diff --git a/reactos/dll/opengl/mesa/generated/glsl/glsl_lexer.cpp b/reactos/dll/opengl/mesa/generated/glsl/glsl_lexer.cpp
index 1a7edbff6f4..35465d8d68e 100644
--- a/reactos/dll/opengl/mesa/generated/glsl/glsl_lexer.cpp
+++ b/reactos/dll/opengl/mesa/generated/glsl/glsl_lexer.cpp
@@ -2008,8 +2008,7 @@ YY_RULE_SETUP
 {
 		  if ((yyextra->language_version >= 140)
 		      || yyextra->AMD_conservative_depth_enable
-		      || yyextra->ARB_conservative_depth_enable
-		      || yyextra->ARB_fragment_coord_conventions_enable) {
+		      || yyextra->ARB_conservative_depth_enable) {
 		      return LAYOUT_TOK;
 		   } else {
 		      yylval->identifier = strdup(yytext);
diff --git a/reactos/dll/opengl/mesa/generated/glsl/glsl_parser.cpp b/reactos/dll/opengl/mesa/generated/glsl/glsl_parser.cpp
index 0dac6d62a3e..dab23db2a73 100644
--- a/reactos/dll/opengl/mesa/generated/glsl/glsl_parser.cpp
+++ b/reactos/dll/opengl/mesa/generated/glsl/glsl_parser.cpp
@@ -4111,12 +4111,6 @@ yyreduce:
 	   }
 
 	   (yyval.type_qualifier).flags.i = (yyvsp[(1) - (3)].type_qualifier).flags.i | (yyvsp[(3) - (3)].type_qualifier).flags.i;
-
-	   if ((yyvsp[(1) - (3)].type_qualifier).flags.q.explicit_location)
-	      (yyval.type_qualifier).location = (yyvsp[(1) - (3)].type_qualifier).location;
-
-	   if ((yyvsp[(3) - (3)].type_qualifier).flags.q.explicit_location)
-	      (yyval.type_qualifier).location = (yyvsp[(3) - (3)].type_qualifier).location;
 	}
     break;
 
@@ -4129,23 +4123,6 @@ yyreduce:
 
 	   memset(& (yyval.type_qualifier), 0, sizeof((yyval.type_qualifier)));
 
-	   /* Layout qualifiers for ARB_fragment_coord_conventions. */
-	   if (!got_one && state->ARB_fragment_coord_conventions_enable) {
-	      if (strcmp((yyvsp[(1) - (1)].identifier), "origin_upper_left") == 0) {
-		 got_one = true;
-		 (yyval.type_qualifier).flags.q.origin_upper_left = 1;
-	      } else if (strcmp((yyvsp[(1) - (1)].identifier), "pixel_center_integer") == 0) {
-		 got_one = true;
-		 (yyval.type_qualifier).flags.q.pixel_center_integer = 1;
-	      }
-
-	      if (got_one && state->ARB_fragment_coord_conventions_warn) {
-		 _mesa_glsl_warning(& (yylsp[(1) - (1)]), state,
-				    "GL_ARB_fragment_coord_conventions layout "
-				    "identifier `%s' used\n", (yyvsp[(1) - (1)].identifier));
-	      }
-	   }
-
 	   /* Layout qualifiers for AMD/ARB_conservative_depth. */
 	   if (!got_one &&
 	       (state->AMD_conservative_depth_enable ||
diff --git a/reactos/dll/opengl/mesa/src/glsl/ast.h b/reactos/dll/opengl/mesa/src/glsl/ast.h
index 1f78af87e5a..a01aac07376 100644
--- a/reactos/dll/opengl/mesa/src/glsl/ast.h
+++ b/reactos/dll/opengl/mesa/src/glsl/ast.h
@@ -352,18 +352,6 @@ struct ast_type_qualifier {
 	 unsigned flat:1;
 	 unsigned noperspective:1;
 
-	 /** \name Layout qualifiers for GL_ARB_fragment_coord_conventions */
-	 /*@{*/
-	 unsigned origin_upper_left:1;
-	 unsigned pixel_center_integer:1;
-	 /*@}*/
-
-	 /**
-	  * Flag set if GL_ARB_explicit_attrib_location "location" layout
-	  * qualifier is used.
-	  */
-	 unsigned explicit_location:1;
-
          /** \name Layout qualifiers for GL_AMD_conservative_depth */
          /** \{ */
          unsigned depth_any:1;
@@ -379,14 +367,6 @@ struct ast_type_qualifier {
       unsigned i;
    } flags;
 
-   /**
-    * Location specified via GL_ARB_explicit_attrib_location layout
-    *
-    * \note
-    * This field is only valid if \c explicit_location is set.
-    */
-   int location;
-
    /**
     * Return true if and only if an interpolation qualifier is present.
     */
diff --git a/reactos/dll/opengl/mesa/src/glsl/ast_to_hir.cpp b/reactos/dll/opengl/mesa/src/glsl/ast_to_hir.cpp
index db5b68ce548..3e7658bc06f 100644
--- a/reactos/dll/opengl/mesa/src/glsl/ast_to_hir.cpp
+++ b/reactos/dll/opengl/mesa/src/glsl/ast_to_hir.cpp
@@ -2030,119 +2030,6 @@ apply_type_qualifier_to_variable(const struct ast_type_qualifier *qual,
 
    }
 
-   var->pixel_center_integer = qual->flags.q.pixel_center_integer;
-   var->origin_upper_left = qual->flags.q.origin_upper_left;
-   if ((qual->flags.q.origin_upper_left || qual->flags.q.pixel_center_integer)
-       && (strcmp(var->name, "gl_FragCoord") != 0)) {
-      const char *const qual_string = (qual->flags.q.origin_upper_left)
-	 ? "origin_upper_left" : "pixel_center_integer";
-
-      _mesa_glsl_error(loc, state,
-		       "layout qualifier `%s' can only be applied to "
-		       "fragment shader input `gl_FragCoord'",
-		       qual_string);
-   }
-
-   if (qual->flags.q.explicit_location) {
-      const bool global_scope = (state->current_function == NULL);
-      bool fail = false;
-      const char *string = "";
-
-      /* In the vertex shader only shader inputs can be given explicit
-       * locations.
-       *
-       * In the fragment shader only shader outputs can be given explicit
-       * locations.
-       */
-      switch (state->target) {
-      case vertex_shader:
-	 if (!global_scope || (var->mode != ir_var_in)) {
-	    fail = true;
-	    string = "input";
-	 }
-	 break;
-
-      case fragment_shader:
-	 if (!global_scope || (var->mode != ir_var_out)) {
-	    fail = true;
-	    string = "output";
-	 }
-	 break;
-      };
-
-      if (fail) {
-	 _mesa_glsl_error(loc, state,
-			  "only %s shader %s variables can be given an "
-			  "explicit location\n",
-			  _mesa_glsl_shader_target_name(state->target),
-			  string);
-      } else {
-	 var->explicit_location = true;
-
-	 /* This bit of silliness is needed because invalid explicit locations
-	  * are supposed to be flagged during linking.  Small negative values
-	  * biased by VERT_ATTRIB_GENERIC0 or FRAG_RESULT_DATA0 could alias
-	  * built-in values (e.g., -16+VERT_ATTRIB_GENERIC0 = VERT_ATTRIB_POS).
-	  * The linker needs to be able to differentiate these cases.  This
-	  * ensures that negative values stay negative.
-	  */
-	 if (qual->location >= 0) {
-	    var->location = (state->target == vertex_shader)
-	       ? (qual->location + VERT_ATTRIB_GENERIC0)
-	       : (qual->location + FRAG_RESULT_DATA0);
-	 } else {
-	    var->location = qual->location;
-	 }
-      }
-   }
-
-   /* Does the declaration use the 'layout' keyword?
-    */
-   const bool uses_layout = qual->flags.q.pixel_center_integer
-      || qual->flags.q.origin_upper_left
-      || qual->flags.q.explicit_location;
-
-   /* Does the declaration use the deprecated 'attribute' or 'varying'
-    * keywords?
-    */
-   const bool uses_deprecated_qualifier = qual->flags.q.attribute
-      || qual->flags.q.varying;
-
-   /* Is the 'layout' keyword used with parameters that allow relaxed checking.
-    * Many implementations of GL_ARB_fragment_coord_conventions_enable and some
-    * implementations (only Mesa?) GL_ARB_explicit_attrib_location_enable
-    * allowed the layout qualifier to be used with 'varying' and 'attribute'.
-    * These extensions and all following extensions that add the 'layout'
-    * keyword have been modified to require the use of 'in' or 'out'.
-    *
-    * The following extension do not allow the deprecated keywords:
-    *
-    *    GL_AMD_conservative_depth
-    *    GL_ARB_conservative_depth
-    *    GL_ARB_gpu_shader5
-    *    GL_ARB_separate_shader_objects
-    *    GL_ARB_tesselation_shader
-    *    GL_ARB_transform_feedback3
-    *    GL_ARB_uniform_buffer_object
-    *
-    * It is unknown whether GL_EXT_shader_image_load_store or GL_NV_gpu_shader5
-    * allow layout with the deprecated keywords.
-    */
-   const bool relaxed_layout_qualifier_checking =
-      state->ARB_fragment_coord_conventions_enable;
-
-   if (uses_layout && uses_deprecated_qualifier) {
-      if (relaxed_layout_qualifier_checking) {
-	 _mesa_glsl_warning(loc, state,
-			    "`layout' qualifier may not be used with "
-			    "`attribute' or `varying'");
-      } else {
-	 _mesa_glsl_error(loc, state,
-			  "`layout' qualifier may not be used with "
-			  "`attribute' or `varying'");
-      }
-   }
-
    /* Layout qualifiers for gl_FragDepth, which are enabled by extension
     * AMD_conservative_depth.
     */
@@ -2236,26 +2123,6 @@ get_variable_being_redeclared(ir_variable *var, ast_declaration *decl,
       earlier->type = var->type;
       delete var;
       var = NULL;
-   } else if (state->ARB_fragment_coord_conventions_enable
-	      && strcmp(var->name, "gl_FragCoord") == 0
-	      && earlier->type == var->type
-	      && earlier->mode == var->mode) {
-      /* Allow redeclaration of gl_FragCoord for ARB_fcc layout
-       * qualifiers.
-       */
-      earlier->origin_upper_left = var->origin_upper_left;
-      earlier->pixel_center_integer = var->pixel_center_integer;
-
-      /* According to section 4.3.7 of the GLSL 1.30 spec,
-       * the following built-in varaibles can be redeclared with an
-       * interpolation qualifier:
-       *    * gl_FrontColor
-       *    * gl_BackColor
-       *    * gl_FrontSecondaryColor
-       *    * gl_BackSecondaryColor
-       *    * gl_Color
-       *    * gl_SecondaryColor
-       */
    } else if (state->language_version >= 130
 	      && (strcmp(var->name, "gl_FrontColor") == 0
 		  || strcmp(var->name, "gl_BackColor") == 0
@@ -2579,8 +2446,7 @@ ast_declarator_list::hir(exec_list *instructions,
        * This is relaxed in GLSL 1.30.  It is also relaxed by any extension
        * that adds the 'layout' keyword.
        */
-      if ((state->language_version < 130)
-	  && !state->ARB_fragment_coord_conventions_enable) {
+      if (state->language_version < 130) {
 	 if (this->type->qualifier.flags.q.out) {
 	    _mesa_glsl_error(& loc, state,
 			     "`out' qualifier in declaration of `%s' "
diff --git a/reactos/dll/opengl/mesa/src/glsl/builtin_variables.cpp b/reactos/dll/opengl/mesa/src/glsl/builtin_variables.cpp
index 6a4f372dfd1..2dde1c87c50 100644
--- a/reactos/dll/opengl/mesa/src/glsl/builtin_variables.cpp
+++ b/reactos/dll/opengl/mesa/src/glsl/builtin_variables.cpp
@@ -407,7 +407,6 @@ add_variable(exec_list *instructions, glsl_symbol_table *symtab,
    }
 
    var->location = slot;
-   var->explicit_location = (slot >= 0);
 
    /* Once the variable is created an initialized, add it to the symbol table
     * and add the declaration to the IR stream.
diff --git a/reactos/dll/opengl/mesa/src/glsl/glcpp/glcpp-parse.c b/reactos/dll/opengl/mesa/src/glsl/glcpp/glcpp-parse.c
index 3fc9a698ab8..28cc4092230 100644
--- a/reactos/dll/opengl/mesa/src/glsl/glcpp/glcpp-parse.c
+++ b/reactos/dll/opengl/mesa/src/glsl/glcpp/glcpp-parse.c
@@ -3444,10 +3444,6 @@ glcpp_parser_create (const struct gl_extensions *extensions, int api)
 	      add_builtin_define(parser, "GL_EXT_texture_array", 1);
 	   }
 
-	   if (extensions->ARB_fragment_coord_conventions)
-	      add_builtin_define(parser, "GL_ARB_fragment_coord_conventions",
-				 1);
-
 	   if (extensions->ARB_shader_texture_lod)
 	      add_builtin_define(parser, "GL_ARB_shader_texture_lod", 1);
 
diff --git a/reactos/dll/opengl/mesa/src/glsl/glsl_lexer.cpp b/reactos/dll/opengl/mesa/src/glsl/glsl_lexer.cpp
index 3891bb0647f..8fd80097e13 100644
--- a/reactos/dll/opengl/mesa/src/glsl/glsl_lexer.cpp
+++ b/reactos/dll/opengl/mesa/src/glsl/glsl_lexer.cpp
@@ -2001,8 +2001,7 @@ YY_RULE_SETUP
 {
 		  if ((yyextra->language_version >= 140)
 		      || yyextra->AMD_conservative_depth_enable
-		      || yyextra->ARB_conservative_depth_enable
-		      || yyextra->ARB_fragment_coord_conventions_enable) {
+		      || yyextra->ARB_conservative_depth_enable) {
 		      return LAYOUT_TOK;
 		   } else {
 		      yylval->identifier = strdup(yytext);
diff --git a/reactos/dll/opengl/mesa/src/glsl/glsl_parser.cpp b/reactos/dll/opengl/mesa/src/glsl/glsl_parser.cpp
index 6e2508c642a..17abfc234b2 100644
--- a/reactos/dll/opengl/mesa/src/glsl/glsl_parser.cpp
+++ b/reactos/dll/opengl/mesa/src/glsl/glsl_parser.cpp
@@ -4080,12 +4080,6 @@ yyreduce:
 	   }
 
 	   (yyval.type_qualifier).flags.i = (yyvsp[(1) - (3)].type_qualifier).flags.i | (yyvsp[(3) - (3)].type_qualifier).flags.i;
-
-	   if ((yyvsp[(1) - (3)].type_qualifier).flags.q.explicit_location)
-	      (yyval.type_qualifier).location = (yyvsp[(1) - (3)].type_qualifier).location;
-
-	   if ((yyvsp[(3) - (3)].type_qualifier).flags.q.explicit_location)
-	      (yyval.type_qualifier).location = (yyvsp[(3) - (3)].type_qualifier).location;
 	;}
     break;
 
@@ -4098,23 +4092,6 @@ yyreduce:
 
 	   memset(& (yyval.type_qualifier), 0, sizeof((yyval.type_qualifier)));
 
-	   /* Layout qualifiers for ARB_fragment_coord_conventions. */
-	   if (!got_one && state->ARB_fragment_coord_conventions_enable) {
-	      if (strcmp((yyvsp[(1) - (1)].identifier), "origin_upper_left") == 0) {
-		 got_one = true;
-		 (yyval.type_qualifier).flags.q.origin_upper_left = 1;
-	      } else if (strcmp((yyvsp[(1) - (1)].identifier), "pixel_center_integer") == 0) {
-		 got_one = true;
-		 (yyval.type_qualifier).flags.q.pixel_center_integer = 1;
-	      }
-
-	      if (got_one && state->ARB_fragment_coord_conventions_warn) {
-		 _mesa_glsl_warning(& (yylsp[(1) - (1)]), state,
-				    "GL_ARB_fragment_coord_conventions layout "
-				    "identifier `%s' used\n", (yyvsp[(1) - (1)].identifier));
-	      }
-	   }
-
 	   /* Layout qualifiers for AMD/ARB_conservative_depth. */
 	   if (!got_one &&
 	       (state->AMD_conservative_depth_enable ||
diff --git a/reactos/dll/opengl/mesa/src/glsl/glsl_parser_extras.cpp b/reactos/dll/opengl/mesa/src/glsl/glsl_parser_extras.cpp
index bbed708942a..12e0becd6cb 100644
--- a/reactos/dll/opengl/mesa/src/glsl/glsl_parser_extras.cpp
+++ b/reactos/dll/opengl/mesa/src/glsl/glsl_parser_extras.cpp
@@ -260,7 +260,6 @@ static const _mesa_glsl_extension _mesa_glsl_supported_extensions[] = {
    EXT(ARB_conservative_depth,         false, false, true,  true,  false,     ARB_conservative_depth),
    EXT(ARB_draw_buffers,               false, false, true,  true,  false,     dummy_true),
    EXT(ARB_draw_instanced,             true,  false, false, true,  false,     ARB_draw_instanced),
-   EXT(ARB_fragment_coord_conventions, true,  false, true,  true,  false,     ARB_fragment_coord_conventions),
    EXT(ARB_texture_rectangle,          true,  false, true,  true,  false,     dummy_true),
    EXT(EXT_texture_array,              true,  false, true,  true,  false,     EXT_texture_array),
    EXT(ARB_shader_texture_lod,         true,  false, true,  true,  false,     ARB_shader_texture_lod),
diff --git a/reactos/dll/opengl/mesa/src/glsl/glsl_parser_extras.h b/reactos/dll/opengl/mesa/src/glsl/glsl_parser_extras.h
index 70dc0ae3468..27982646fda 100644
--- a/reactos/dll/opengl/mesa/src/glsl/glsl_parser_extras.h
+++ b/reactos/dll/opengl/mesa/src/glsl/glsl_parser_extras.h
@@ -180,8 +180,6 @@ struct _mesa_glsl_parse_state {
    bool ARB_draw_buffers_warn;
    bool ARB_draw_instanced_enable;
    bool ARB_draw_instanced_warn;
-   bool ARB_fragment_coord_conventions_enable;
-   bool ARB_fragment_coord_conventions_warn;
    bool ARB_texture_rectangle_enable;
    bool ARB_texture_rectangle_warn;
    bool EXT_texture_array_enable;
diff --git a/reactos/dll/opengl/mesa/src/glsl/ir.cpp b/reactos/dll/opengl/mesa/src/glsl/ir.cpp
index a5eca5a51a0..4d5883c4e6e 100644
--- a/reactos/dll/opengl/mesa/src/glsl/ir.cpp
+++ b/reactos/dll/opengl/mesa/src/glsl/ir.cpp
@@ -1325,14 +1325,11 @@ ir_variable::ir_variable(const struct glsl_type *type, const char *name,
    this->ir_type = ir_type_variable;
    this->type = type;
    this->name = ralloc_strdup(this, name);
-   this->explicit_location = false;
    this->has_initializer = false;
    this->location = -1;
    this->warn_extension = NULL;
    this->constant_value = NULL;
    this->constant_initializer = NULL;
-   this->origin_upper_left = false;
-   this->pixel_center_integer = false;
    this->depth_layout = ir_depth_layout_none;
    this->used = false;
 
diff --git a/reactos/dll/opengl/mesa/src/glsl/ir.h b/reactos/dll/opengl/mesa/src/glsl/ir.h
index 1fae5864fc9..9f88a8eafbf 100644
--- a/reactos/dll/opengl/mesa/src/glsl/ir.h
+++ b/reactos/dll/opengl/mesa/src/glsl/ir.h
@@ -347,23 +347,8 @@ public:
     */
    unsigned interpolation:2;
 
-   /**
-    * \name ARB_fragment_coord_conventions
-    * @{
-    */
-   unsigned origin_upper_left:1;
-   unsigned pixel_center_integer:1;
    /*@}*/
 
-   /**
-    * Was the location explicitly set in the shader?
-    *
-    * If the location is explicitly set in the shader, it \b cannot be changed
-    * by the linker or by the API (e.g., calls to \c glBindAttribLocation have
-    * no effect).
-    */
-   unsigned explicit_location:1;
-
    /**
     * Does this variable have an initializer?
     *
diff --git a/reactos/dll/opengl/mesa/src/glsl/ir_clone.cpp b/reactos/dll/opengl/mesa/src/glsl/ir_clone.cpp
index c63615c7eb3..16e4c5079f1 100644
--- a/reactos/dll/opengl/mesa/src/glsl/ir_clone.cpp
+++ b/reactos/dll/opengl/mesa/src/glsl/ir_clone.cpp
@@ -47,9 +47,6 @@ ir_variable::clone(void *mem_ctx, struct hash_table *ht) const
    var->interpolation = this->interpolation;
    var->location = this->location;
    var->warn_extension = this->warn_extension;
-   var->origin_upper_left = this->origin_upper_left;
-   var->pixel_center_integer = this->pixel_center_integer;
-   var->explicit_location = this->explicit_location;
    var->has_initializer = this->has_initializer;
    var->depth_layout = this->depth_layout;
 
@@ -64,9 +61,6 @@ ir_variable::clone(void *mem_ctx, struct hash_table *ht) const
 	     sizeof(this->state_slots[0]) * var->num_state_slots);
    }
 
-   if (this->explicit_location)
-      var->location = this->location;
-
    if (this->constant_value)
       var->constant_value = this->constant_value->clone(mem_ctx, ht);
 
diff --git a/reactos/dll/opengl/mesa/src/glsl/linker.cpp b/reactos/dll/opengl/mesa/src/glsl/linker.cpp
index 816cc277176..c980712146a 100644
--- a/reactos/dll/opengl/mesa/src/glsl/linker.cpp
+++ b/reactos/dll/opengl/mesa/src/glsl/linker.cpp
@@ -202,7 +202,7 @@ link_invalidate_variable_locations(gl_shader *sh, enum ir_variable_mode mode,
 
       /* Only assign locations for generic attributes / varyings / etc.
        */
-      if ((var->location >= generic_base) && !var->explicit_location)
+      if (var->location >= generic_base)
 	  var->location = -1;
    }
 }
@@ -409,19 +409,6 @@ cross_validate_globals(struct gl_shader_program *prog,
 	       }
 	    }
 
-	    if (var->explicit_location) {
-	       if (existing->explicit_location
-		   && (var->location != existing->location)) {
-		     linker_error(prog, "explicit locations for %s "
-				  "`%s' have differing values\n",
-				  mode_string(var), var->name);
-		     return false;
-	       }
-
-	       existing->location = var->location;
-	       existing->explicit_location = true;
-	    }
-
 	    /* Validate layout qualifiers for gl_FragDepth.
 	     *
 	     * From the AMD/ARB_conservative_depth specs:
@@ -1214,17 +1201,7 @@ assign_attribute_or_color_locations(gl_shader_program *prog,
       if ((var == NULL) || (var->mode != (unsigned) direction))
 	 continue;
 
-      if (var->explicit_location) {
-	 if ((var->location >= (int)(max_index + generic_base))
-	     || (var->location < 0)) {
-	    linker_error(prog,
-			 "invalid explicit location %d specified for `%s'\n",
-			 (var->location < 0)
-			 ? var->location : var->location - generic_base,
-			 var->name);
-	    return false;
-	 }
-      } else if (target_index == MESA_SHADER_VERTEX) {
+      if (target_index == MESA_SHADER_VERTEX) {
 	 unsigned binding;
 
 	 if (prog->AttributeBindings->get(binding, var->name)) {
diff --git a/reactos/dll/opengl/mesa/src/glsl/standalone_scaffolding.cpp b/reactos/dll/opengl/mesa/src/glsl/standalone_scaffolding.cpp
index 24cc64ad97b..5a39162f214 100644
--- a/reactos/dll/opengl/mesa/src/glsl/standalone_scaffolding.cpp
+++ b/reactos/dll/opengl/mesa/src/glsl/standalone_scaffolding.cpp
@@ -68,7 +68,6 @@ void initialize_context_to_defaults(struct gl_context *ctx, gl_api api)
    ctx->Extensions.dummy_true = true;
    ctx->Extensions.ARB_ES2_compatibility = true;
    ctx->Extensions.ARB_draw_instanced = true;
-   ctx->Extensions.ARB_fragment_coord_conventions = true;
    ctx->Extensions.EXT_texture_array = true;
    ctx->Extensions.NV_texture_rectangle = true;
    ctx->Extensions.EXT_texture3D = true;
diff --git a/reactos/dll/opengl/mesa/src/mesa/main/api_validate.c b/reactos/dll/opengl/mesa/src/mesa/main/api_validate.c
index 0879a683eb0..172bfa55f69 100644
--- a/reactos/dll/opengl/mesa/src/mesa/main/api_validate.c
+++ b/reactos/dll/opengl/mesa/src/mesa/main/api_validate.c
@@ -164,7 +164,7 @@ check_valid_to_render(struct gl_context *ctx, const char *function)
  */
 static GLboolean
 check_index_bounds(struct gl_context *ctx, GLsizei count, GLenum type,
-		   const GLvoid *indices, GLint basevertex)
+		   const GLvoid *indices)
 {
    struct _mesa_prim prim;
    struct _mesa_index_buffer ib;
@@ -186,8 +186,7 @@ check_index_bounds(struct gl_context *ctx, GLsizei count, GLenum type,
 
    vbo_get_minmax_index(ctx, &prim, &ib, &min, &max);
 
-   if ((int)(min + basevertex) < 0 ||
-       max + basevertex >= ctx->Array.ArrayObj->_MaxElement) {
+   if (max >= ctx->Array.ArrayObj->_MaxElement) {
       /* the max element is out of bounds of one or more enabled arrays */
       _mesa_warning(ctx, "glDrawElements() index=%u is out of bounds (max=%u)",
                     max, ctx->Array.ArrayObj->_MaxElement);
@@ -223,7 +222,7 @@ _mesa_valid_prim_mode(const struct gl_context *ctx, GLenum mode)
 GLboolean
 _mesa_validate_DrawElements(struct gl_context *ctx,
 			    GLenum mode, GLsizei count, GLenum type,
-			    const GLvoid *indices, GLint basevertex)
+			    const GLvoid *indices)
 {
    ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
 
@@ -264,7 +263,7 @@ _mesa_validate_DrawElements(struct gl_context *ctx,
          return GL_FALSE;
    }
 
-   if (!check_index_bounds(ctx, count, type, indices, basevertex))
+   if (!check_index_bounds(ctx, count, type, indices))
       return GL_FALSE;
 
    return GL_TRUE;
@@ -280,7 +279,7 @@ GLboolean
 _mesa_validate_DrawRangeElements(struct gl_context *ctx, GLenum mode,
 				 GLuint start, GLuint end,
 				 GLsizei count, GLenum type,
-				 const GLvoid *indices, GLint basevertex)
+				 const GLvoid *indices)
 {
    ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
 
@@ -325,7 +324,7 @@ _mesa_validate_DrawRangeElements(struct gl_context *ctx, GLenum mode,
          return GL_FALSE;
    }
 
-   if (!check_index_bounds(ctx, count, type, indices, basevertex))
+   if (!check_index_bounds(ctx, count, type, indices))
       return GL_FALSE;
 
    return GL_TRUE;
@@ -413,8 +412,7 @@ _mesa_validate_DrawArraysInstanced(struct gl_context *ctx, GLenum mode, GLint fi
 GLboolean
 _mesa_validate_DrawElementsInstanced(struct gl_context *ctx,
                                      GLenum mode, GLsizei count, GLenum type,
-                                     const GLvoid *indices, GLsizei numInstances,
-                                     GLint basevertex)
+                                     const GLvoid *indices, GLsizei numInstances)
 {
    ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
 
@@ -465,7 +463,7 @@ _mesa_validate_DrawElementsInstanced(struct gl_context *ctx,
          return GL_FALSE;
    }
 
-   if (!check_index_bounds(ctx, count, type, indices, basevertex))
+   if (!check_index_bounds(ctx, count, type, indices))
       return GL_FALSE;
 
    return GL_TRUE;
diff --git a/reactos/dll/opengl/mesa/src/mesa/main/api_validate.h b/reactos/dll/opengl/mesa/src/mesa/main/api_validate.h
index c03e0952511..9a72f0e0307 100644
--- a/reactos/dll/opengl/mesa/src/mesa/main/api_validate.h
+++ b/reactos/dll/opengl/mesa/src/mesa/main/api_validate.h
@@ -53,13 +53,13 @@ _mesa_validate_DrawArrays(struct gl_context *ctx,
 extern GLboolean
 _mesa_validate_DrawElements(struct gl_context *ctx,
 			    GLenum mode, GLsizei count, GLenum type,
-			    const GLvoid *indices, GLint basevertex);
+			    const GLvoid *indices);
 
 extern GLboolean
 _mesa_validate_DrawRangeElements(struct gl_context *ctx, GLenum mode,
 				 GLuint start, GLuint end,
 				 GLsizei count, GLenum type,
-				 const GLvoid *indices, GLint basevertex);
+				 const GLvoid *indices);
 
 
 extern GLboolean
@@ -69,7 +69,6 @@ _mesa_validate_DrawArraysInstanced(struct gl_context *ctx, GLenum mode, GLint fi
 extern GLboolean
 _mesa_validate_DrawElementsInstanced(struct gl_context *ctx,
                                      GLenum mode, GLsizei count, GLenum type,
-                                     const GLvoid *indices, GLsizei primcount,
-                                     GLint basevertex);
+                                     const GLvoid *indices, GLsizei primcount);
 
 #endif
diff --git a/reactos/dll/opengl/mesa/src/mesa/main/dd.h b/reactos/dll/opengl/mesa/src/mesa/main/dd.h
index 15ce009f459..ccc3efb4b52 100644
--- a/reactos/dll/opengl/mesa/src/mesa/main/dd.h
+++ b/reactos/dll/opengl/mesa/src/mesa/main/dd.h
@@ -1022,29 +1022,11 @@ typedef struct {
 					    GLenum type,
 					    const GLvoid **indices,
 					    GLsizei primcount);
-   void (GLAPIENTRYP DrawElementsBaseVertex)( GLenum mode, GLsizei count,
-					      GLenum type,
-					      const GLvoid *indices,
-					      GLint basevertex );
-   void (GLAPIENTRYP DrawRangeElementsBaseVertex)( GLenum mode, GLuint start,
-						   GLuint end, GLsizei count,
-						   GLenum type,
-						   const GLvoid *indices,
-						   GLint basevertex);
-   void (GLAPIENTRYP MultiDrawElementsBaseVertex)( GLenum mode,
-						   const GLsizei *count,
-						   GLenum type,
-						   const GLvoid **indices,
-						   GLsizei primcount,
-						   const GLint *basevertex);
    void (GLAPIENTRYP DrawArraysInstanced)(GLenum mode, GLint first,
                                           GLsizei count, GLsizei primcount);
    void (GLAPIENTRYP DrawElementsInstanced)(GLenum mode, GLsizei count,
                                             GLenum type, const GLvoid *indices,
                                             GLsizei primcount);
-   void (GLAPIENTRYP DrawElementsInstancedBaseVertex)(GLenum mode, GLsizei count,
-                                            GLenum type, const GLvoid *indices,
-                                            GLsizei primcount, GLint basevertex);
    /*@}*/
 
    /**
diff --git a/reactos/dll/opengl/mesa/src/mesa/main/dispatch.h b/reactos/dll/opengl/mesa/src/mesa/main/dispatch.h
index 7b01b00ebdf..bbff15dd0c3 100644
--- a/reactos/dll/opengl/mesa/src/mesa/main/dispatch.h
+++ b/reactos/dll/opengl/mesa/src/mesa/main/dispatch.h
@@ -640,10 +640,6 @@
 #define _gloffset_BindVertexArray 583
 #define _gloffset_GenVertexArrays 584
 #define _gloffset_CopyBufferSubData 585
-#define _gloffset_DrawElementsBaseVertex 593
-#define _gloffset_DrawElementsInstancedBaseVertex 594
-#define _gloffset_DrawRangeElementsBaseVertex 595
-#define _gloffset_MultiDrawElementsBaseVertex 596
 #define _gloffset_BlendEquationSeparateiARB 597
 #define _gloffset_BlendEquationiARB 598
 #define _gloffset_BlendFuncSeparateiARB 599
@@ -1100,10 +1096,6 @@ extern int driDispatchRemapTable[ driDispatchRemapTable_size ];
 #define BindVertexArray_remap_index 175
 #define GenVertexArrays_remap_index 176
 #define CopyBufferSubData_remap_index 177
-#define DrawElementsBaseVertex_remap_index 185
-#define DrawElementsInstancedBaseVertex_remap_index 186
-#define DrawRangeElementsBaseVertex_remap_index 187
-#define MultiDrawElementsBaseVertex_remap_index 188
 #define BlendEquationSeparateiARB_remap_index 189
 #define BlendEquationiARB_remap_index 190
 #define BlendFuncSeparateiARB_remap_index 191
@@ -1554,10 +1546,6 @@ extern int driDispatchRemapTable[ driDispatchRemapTable_size ];
 #define _gloffset_BindVertexArray driDispatchRemapTable[BindVertexArray_remap_index]
 #define _gloffset_GenVertexArrays driDispatchRemapTable[GenVertexArrays_remap_index]
 #define _gloffset_CopyBufferSubData driDispatchRemapTable[CopyBufferSubData_remap_index]
-#define _gloffset_DrawElementsBaseVertex driDispatchRemapTable[DrawElementsBaseVertex_remap_index]
-#define _gloffset_DrawElementsInstancedBaseVertex driDispatchRemapTable[DrawElementsInstancedBaseVertex_remap_index]
-#define _gloffset_DrawRangeElementsBaseVertex driDispatchRemapTable[DrawRangeElementsBaseVertex_remap_index]
-#define _gloffset_MultiDrawElementsBaseVertex driDispatchRemapTable[MultiDrawElementsBaseVertex_remap_index]
 #define _gloffset_BlendEquationSeparateiARB driDispatchRemapTable[BlendEquationSeparateiARB_remap_index]
 #define _gloffset_BlendEquationiARB driDispatchRemapTable[BlendEquationiARB_remap_index]
 #define _gloffset_BlendFuncSeparateiARB driDispatchRemapTable[BlendFuncSeparateiARB_remap_index]
@@ -8137,50 +8125,6 @@ static inline void SET_CopyBufferSubData(struct _glapi_table *disp, void (GLAPIE
    SET_by_offset(disp, _gloffset_CopyBufferSubData, fn);
 }
 
-typedef void (GLAPIENTRYP _glptr_DrawElementsBaseVertex)(GLenum, GLsizei, GLenum, const GLvoid *, GLint);
-#define CALL_DrawElementsBaseVertex(disp, parameters) \
-    (* GET_DrawElementsBaseVertex(disp)) parameters
-static inline _glptr_DrawElementsBaseVertex GET_DrawElementsBaseVertex(struct _glapi_table *disp) {
-   return (_glptr_DrawElementsBaseVertex) (GET_by_offset(disp, _gloffset_DrawElementsBaseVertex));
-}
-
-static inline void SET_DrawElementsBaseVertex(struct _glapi_table *disp, void (GLAPIENTRYP fn)(GLenum, GLsizei, GLenum, const GLvoid *, GLint)) {
-   SET_by_offset(disp, _gloffset_DrawElementsBaseVertex, fn);
-}
-
-typedef void (GLAPIENTRYP _glptr_DrawElementsInstancedBaseVertex)(GLenum, GLsizei, GLenum, const GLvoid *, GLsizei, GLint);
-#define CALL_DrawElementsInstancedBaseVertex(disp, parameters) \
-    (* GET_DrawElementsInstancedBaseVertex(disp)) parameters
-static inline _glptr_DrawElementsInstancedBaseVertex GET_DrawElementsInstancedBaseVertex(struct _glapi_table *disp) {
-   return (_glptr_DrawElementsInstancedBaseVertex) (GET_by_offset(disp, _gloffset_DrawElementsInstancedBaseVertex));
-}
-
-static inline void SET_DrawElementsInstancedBaseVertex(struct _glapi_table *disp, void (GLAPIENTRYP fn)(GLenum, GLsizei, GLenum, const GLvoid *, GLsizei, GLint)) {
-   SET_by_offset(disp, _gloffset_DrawElementsInstancedBaseVertex, fn);
-}
-
-typedef void (GLAPIENTRYP _glptr_DrawRangeElementsBaseVertex)(GLenum, GLuint, GLuint, GLsizei, GLenum, const GLvoid *, GLint);
-#define CALL_DrawRangeElementsBaseVertex(disp, parameters) \
-    (* GET_DrawRangeElementsBaseVertex(disp)) parameters
-static inline _glptr_DrawRangeElementsBaseVertex GET_DrawRangeElementsBaseVertex(struct _glapi_table *disp) {
-   return (_glptr_DrawRangeElementsBaseVertex) (GET_by_offset(disp, _gloffset_DrawRangeElementsBaseVertex));
-}
-
-static inline void SET_DrawRangeElementsBaseVertex(struct _glapi_table *disp, void (GLAPIENTRYP fn)(GLenum, GLuint, GLuint, GLsizei, GLenum, const GLvoid *, GLint)) {
-   SET_by_offset(disp, _gloffset_DrawRangeElementsBaseVertex, fn);
-}
-
-typedef void (GLAPIENTRYP _glptr_MultiDrawElementsBaseVertex)(GLenum, const GLsizei *, GLenum, const GLvoid **, GLsizei, const GLint *);
-#define CALL_MultiDrawElementsBaseVertex(disp, parameters) \
-    (* GET_MultiDrawElementsBaseVertex(disp)) parameters
-static inline _glptr_MultiDrawElementsBaseVertex GET_MultiDrawElementsBaseVertex(struct _glapi_table *disp) {
-   return (_glptr_MultiDrawElementsBaseVertex) (GET_by_offset(disp, _gloffset_MultiDrawElementsBaseVertex));
-}
-
-static inline void SET_MultiDrawElementsBaseVertex(struct _glapi_table *disp, void (GLAPIENTRYP fn)(GLenum, const GLsizei *, GLenum, const GLvoid **, GLsizei, const GLint *)) {
-   SET_by_offset(disp, _gloffset_MultiDrawElementsBaseVertex, fn);
-}
-
 typedef void (GLAPIENTRYP _glptr_BlendEquationSeparateiARB)(GLuint, GLenum, GLenum);
 #define CALL_BlendEquationSeparateiARB(disp, parameters) \
     (* GET_BlendEquationSeparateiARB(disp)) parameters
diff --git a/reactos/dll/opengl/mesa/src/mesa/main/dlist.c b/reactos/dll/opengl/mesa/src/mesa/main/dlist.c
index f9fd7e99646..19ff9661a16 100644
--- a/reactos/dll/opengl/mesa/src/mesa/main/dlist.c
+++ b/reactos/dll/opengl/mesa/src/mesa/main/dlist.c
@@ -1273,19 +1273,6 @@ save_DrawElementsInstancedARB(GLenum mode,
 	       "glDrawElementsInstanced() during display list compile");
 }
 
-static void GLAPIENTRY
-save_DrawElementsInstancedBaseVertexARB(GLenum mode,
-					GLsizei count,
-					GLenum type,
-					const GLvoid *indices,
-					GLsizei primcount,
-					GLint basevertex)
-{
-   GET_CURRENT_CONTEXT(ctx);
-   _mesa_error(ctx, GL_INVALID_OPERATION,
-	       "glDrawElementsInstancedBaseVertex() during display list compile");
-}
-
 static void invalidate_saved_current_state( struct gl_context *ctx )
 {
    GLint i;
@@ -10051,9 +10038,6 @@ _mesa_save_vtxfmt_init(GLvertexformat * vfmt)
    vfmt->DrawArraysInstanced = save_DrawArraysInstancedARB;
    vfmt->DrawElementsInstanced = save_DrawElementsInstancedARB;
 
-   /* GL_ARB_draw_elements_base_vertex */
-   vfmt->DrawElementsInstancedBaseVertex = save_DrawElementsInstancedBaseVertexARB;
-
    /* The driver is required to implement these as
     * 1) They can probably do a better job.
     * 2) A lot of new mechanisms would have to be added to this module
diff --git a/reactos/dll/opengl/mesa/src/mesa/main/extensions.c b/reactos/dll/opengl/mesa/src/mesa/main/extensions.c
index 3d5bdb09c12..61bbbaf6c7f 100644
--- a/reactos/dll/opengl/mesa/src/mesa/main/extensions.c
+++ b/reactos/dll/opengl/mesa/src/mesa/main/extensions.c
@@ -85,9 +85,6 @@ static const struct extension extension_table[] = {
    { "GL_ARB_depth_clamp",                         o(ARB_depth_clamp),                         GL,             2003 },
    { "GL_ARB_draw_buffers",                        o(dummy_true),                              GL,             2002 },
    { "GL_ARB_draw_buffers_blend",                  o(ARB_draw_buffers_blend),                  GL,             2009 },
-   { "GL_ARB_draw_elements_base_vertex",           o(ARB_draw_elements_base_vertex),           GL,             2009 },
-   { "GL_ARB_draw_instanced",                      o(ARB_draw_instanced),                      GL,             2008 },
-   { "GL_ARB_fragment_coord_conventions",          o(ARB_fragment_coord_conventions),          GL,             2009 },
    { "GL_ARB_fragment_program",                    o(ARB_fragment_program),                    GL,             2002 },
    { "GL_ARB_fragment_program_shadow",             o(ARB_fragment_program_shadow),             GL,             2003 },
    { "GL_ARB_fragment_shader",                     o(ARB_fragment_shader),                     GL,             2002 },
@@ -348,9 +345,7 @@ _mesa_enable_sw_extensions(struct gl_context *ctx)
 {
    /*ctx->Extensions.ARB_copy_buffer = GL_TRUE;*/
    ctx->Extensions.ARB_depth_clamp = GL_TRUE;
-   ctx->Extensions.ARB_draw_elements_base_vertex = GL_TRUE;
    ctx->Extensions.ARB_draw_instanced = GL_TRUE;
-   ctx->Extensions.ARB_fragment_coord_conventions = GL_TRUE;
 #if FEATURE_ARB_fragment_program
    ctx->Extensions.ARB_fragment_program = GL_TRUE;
    ctx->Extensions.ARB_fragment_program_shadow = GL_TRUE;
diff --git a/reactos/dll/opengl/mesa/src/mesa/main/mtypes.h b/reactos/dll/opengl/mesa/src/mesa/main/mtypes.h
index b06359e5974..ab6b9afc769 100644
--- a/reactos/dll/opengl/mesa/src/mesa/main/mtypes.h
+++ b/reactos/dll/opengl/mesa/src/mesa/main/mtypes.h
@@ -1824,8 +1824,6 @@ struct gl_fragment_program
 {
    struct gl_program Base;   /**< base class */
    GLboolean UsesKill;          /**< shader uses KIL instruction */
-   GLboolean OriginUpperLeft;
-   GLboolean PixelCenterInteger;
    enum gl_frag_depth_layout FragDepthLayout;
 
    /**
@@ -2495,9 +2493,7 @@ struct gl_extensions
    GLboolean ARB_depth_buffer_float;
    GLboolean ARB_depth_clamp;
    GLboolean ARB_draw_buffers_blend;
-   GLboolean ARB_draw_elements_base_vertex;
    GLboolean ARB_draw_instanced;
-   GLboolean ARB_fragment_coord_conventions;
    GLboolean ARB_fragment_program;
    GLboolean ARB_fragment_program_shadow;
    GLboolean ARB_fragment_shader;
diff --git a/reactos/dll/opengl/mesa/src/mesa/main/varray.h b/reactos/dll/opengl/mesa/src/mesa/main/varray.h
index 7df9582dfc4..0ac95ebf171 100644
--- a/reactos/dll/opengl/mesa/src/mesa/main/varray.h
+++ b/reactos/dll/opengl/mesa/src/mesa/main/varray.h
@@ -200,12 +200,6 @@ extern void GLAPIENTRY
 _mesa_MultiDrawElementsEXT( GLenum mode, const GLsizei *count, GLenum type,
                             const GLvoid **indices, GLsizei primcount );
 
-extern void GLAPIENTRY
-_mesa_MultiDrawElementsBaseVertex( GLenum mode,
-				   const GLsizei *count, GLenum type,
-				   const GLvoid **indices, GLsizei primcount,
-				   const GLint *basevertex);
-
 extern void GLAPIENTRY
 _mesa_MultiModeDrawArraysIBM( const GLenum * mode, const GLint * first,
 			      const GLsizei * count,
diff --git a/reactos/dll/opengl/mesa/src/mesa/main/version.c b/reactos/dll/opengl/mesa/src/mesa/main/version.c
index 7a960682b9a..68ddf94c6cb 100644
--- a/reactos/dll/opengl/mesa/src/mesa/main/version.c
+++ b/reactos/dll/opengl/mesa/src/mesa/main/version.c
@@ -148,9 +148,7 @@ compute_version(struct gl_context *ctx)
                               ctx->Const.MaxVertexTextureImageUnits >= 16);
    const GLboolean ver_3_2 = (ver_3_1 &&
                               ctx->Const.GLSLVersion >= 150 &&
-                              ctx->Extensions.ARB_depth_clamp &&
-                              ctx->Extensions.ARB_draw_elements_base_vertex &&
-                              ctx->Extensions.ARB_fragment_coord_conventions);
+                              ctx->Extensions.ARB_depth_clamp);
 
    if (ver_3_2) {
       major = 3;
diff --git a/reactos/dll/opengl/mesa/src/mesa/main/vtxfmt.c b/reactos/dll/opengl/mesa/src/mesa/main/vtxfmt.c
index d0941477d61..1b3c299ea4c 100644
--- a/reactos/dll/opengl/mesa/src/mesa/main/vtxfmt.c
+++ b/reactos/dll/opengl/mesa/src/mesa/main/vtxfmt.c
@@ -101,12 +101,8 @@ install_vtxfmt( struct _glapi_table *tab, const GLvertexformat *vfmt )
    SET_DrawElements(tab, vfmt->DrawElements);
    SET_DrawRangeElements(tab, vfmt->DrawRangeElements);
    SET_MultiDrawElementsEXT(tab, vfmt->MultiDrawElementsEXT);
-   SET_DrawElementsBaseVertex(tab, vfmt->DrawElementsBaseVertex);
-   SET_DrawRangeElementsBaseVertex(tab, vfmt->DrawRangeElementsBaseVertex);
-   SET_MultiDrawElementsBaseVertex(tab, vfmt->MultiDrawElementsBaseVertex);
    SET_DrawArraysInstancedARB(tab, vfmt->DrawArraysInstanced);
    SET_DrawElementsInstancedARB(tab, vfmt->DrawElementsInstanced);
-   SET_DrawElementsInstancedBaseVertex(tab, vfmt->DrawElementsInstancedBaseVertex);
 
    /* GL_NV_vertex_program */
    SET_VertexAttrib1fNV(tab, vfmt->VertexAttrib1fNV);
diff --git a/reactos/dll/opengl/mesa/src/mesa/program/arbprogparse.c b/reactos/dll/opengl/mesa/src/mesa/program/arbprogparse.c
index dffc8abf735..2f6b8db5d62 100644
--- a/reactos/dll/opengl/mesa/src/mesa/program/arbprogparse.c
+++ b/reactos/dll/opengl/mesa/src/mesa/program/arbprogparse.c
@@ -116,8 +116,6 @@ _mesa_parse_arb_fragment_program(struct gl_context* ctx, GLenum target,
          program->Base.SamplersUsed |= (1 << i);
    }
    program->Base.ShadowSamplers = prog.ShadowSamplers;
-   program->OriginUpperLeft = state.option.OriginUpperLeft;
-   program->PixelCenterInteger = state.option.PixelCenterInteger;
 
    program->UsesKill            = state.fragment.UsesKill;
 
diff --git a/reactos/dll/opengl/mesa/src/mesa/program/ir_to_mesa.cpp b/reactos/dll/opengl/mesa/src/mesa/program/ir_to_mesa.cpp
index b03e4e0c638..03940702526 100644
--- a/reactos/dll/opengl/mesa/src/mesa/program/ir_to_mesa.cpp
+++ b/reactos/dll/opengl/mesa/src/mesa/program/ir_to_mesa.cpp
@@ -680,13 +680,6 @@ ir_to_mesa_visitor::find_variable_storage(ir_variable *var)
 void
 ir_to_mesa_visitor::visit(ir_variable *ir)
 {
-   if (strcmp(ir->name, "gl_FragCoord") == 0) {
-      struct gl_fragment_program *fp = (struct gl_fragment_program *)this->prog;
-
-      fp->OriginUpperLeft = ir->origin_upper_left;
-      fp->PixelCenterInteger = ir->pixel_center_integer;
-   }
-
    if (ir->mode == ir_var_uniform && strncmp(ir->name, "gl_", 3) == 0) {
       unsigned int i;
       const ir_state_slot *const slots = ir->state_slots;
diff --git a/reactos/dll/opengl/mesa/src/mesa/program/program.c b/reactos/dll/opengl/mesa/src/mesa/program/program.c
index 498f533f76d..ccd97d4119a 100644
--- a/reactos/dll/opengl/mesa/src/mesa/program/program.c
+++ b/reactos/dll/opengl/mesa/src/mesa/program/program.c
@@ -480,8 +480,6 @@ _mesa_clone_program(struct gl_context *ctx, const struct gl_program *prog)
             = (const struct gl_fragment_program *) prog;
          struct gl_fragment_program *fpc = (struct gl_fragment_program *) clone;
          fpc->UsesKill = fp->UsesKill;
-         fpc->OriginUpperLeft = fp->OriginUpperLeft;
-         fpc->PixelCenterInteger = fp->PixelCenterInteger;
       }
       break;
    default:
diff --git a/reactos/dll/opengl/mesa/src/mesa/program/program_parse_extra.c b/reactos/dll/opengl/mesa/src/mesa/program/program_parse_extra.c
index 4d928483e16..bedef7479ac 100644
--- a/reactos/dll/opengl/mesa/src/mesa/program/program_parse_extra.c
+++ b/reactos/dll/opengl/mesa/src/mesa/program/program_parse_extra.c
@@ -216,18 +216,6 @@ _mesa_ARBfp_parse_option(struct asm_parser_state *state, const char *option)
 	    state->option.Shadow = 1;
 	    return 1;
 	 }
-      } else if (strncmp(option, "fragment_coord_", 15) == 0) {
-         option += 15;
-         if (state->ctx->Extensions.ARB_fragment_coord_conventions) {
-            if (strcmp(option, "origin_upper_left") == 0) {
-               state->option.OriginUpperLeft = 1;
-               return 1;
-            }
-            else if (strcmp(option, "pixel_center_integer") == 0) {
-               state->option.PixelCenterInteger = 1;
-               return 1;
-            }
-         }
       }
    } else if (strncmp(option, "ATI_", 4) == 0) {
       option += 4;
diff --git a/reactos/dll/opengl/mesa/src/mesa/program/program_parser.h b/reactos/dll/opengl/mesa/src/mesa/program/program_parser.h
index bc756148a20..a2bdda52987 100644
--- a/reactos/dll/opengl/mesa/src/mesa/program/program_parser.h
+++ b/reactos/dll/opengl/mesa/src/mesa/program/program_parser.h
@@ -208,8 +208,6 @@ struct asm_parser_state {
       unsigned TexRect:1;
       unsigned TexArray:1;
       unsigned NV_fragment:1;
-      unsigned OriginUpperLeft:1;
-      unsigned PixelCenterInteger:1;
    } option;
 
    struct {
diff --git a/reactos/dll/opengl/mesa/src/mesa/swrast/s_fragprog.c b/reactos/dll/opengl/mesa/src/mesa/swrast/s_fragprog.c
index d6fa40d3e2a..a91ff694bff 100644
--- a/reactos/dll/opengl/mesa/src/mesa/swrast/s_fragprog.c
+++ b/reactos/dll/opengl/mesa/src/mesa/swrast/s_fragprog.c
@@ -133,21 +133,11 @@ init_machine(struct gl_context *ctx, struct gl_program_machine *machine,
              const struct gl_fragment_program *program,
              const SWspan *span, GLuint col)
 {
-   GLfloat *wpos = span->array->attribs[FRAG_ATTRIB_WPOS][col];
-
    if (program->Base.Target == GL_FRAGMENT_PROGRAM_NV) {
       /* Clear temporary registers (undefined for ARB_f_p) */
       memset(machine->Temporaries, 0, MAX_PROGRAM_TEMPS * 4 * sizeof(GLfloat));
    }
 
-   /* ARB_fragment_coord_conventions */
-   if (program->OriginUpperLeft)
-      wpos[1] = ctx->DrawBuffer->Height - 1 - wpos[1];
-   if (!program->PixelCenterInteger) {
-      wpos[0] += 0.5F;
-      wpos[1] += 0.5F;
-   }
-
    /* Setup pointer to input attributes */
    machine->Attribs = span->array->attribs;
 
diff --git a/reactos/dll/opengl/mesa/src/mesa/tnl/t_draw.c b/reactos/dll/opengl/mesa/src/mesa/tnl/t_draw.c
index b6885f1ce11..5b05977fce6 100644
--- a/reactos/dll/opengl/mesa/src/mesa/tnl/t_draw.c
+++ b/reactos/dll/opengl/mesa/src/mesa/tnl/t_draw.c
@@ -330,27 +330,22 @@ static void bind_indices( struct gl_context *ctx,
       ptr = ADD_POINTERS(ib->obj->Pointer, ib->ptr);
    }
 
-   if (ib->type == GL_UNSIGNED_INT && VB->Primitive[0].basevertex == 0) {
+   if (ib->type == GL_UNSIGNED_INT) {
       VB->Elts = (GLuint *) ptr;
    }
    else {
       GLuint *elts = (GLuint *)get_space(ctx, ib->count * sizeof(GLuint));
       VB->Elts = elts;
 
-      if (ib->type == GL_UNSIGNED_INT) {
-	 const GLuint *in = (GLuint *)ptr;
-	 for (i = 0; i < ib->count; i++)
-	    *elts++ = (GLuint)(*in++) + VB->Primitive[0].basevertex;
-      }
-      else if (ib->type == GL_UNSIGNED_SHORT) {
+      if (ib->type == GL_UNSIGNED_SHORT) {
 	 const GLushort *in = (GLushort *)ptr;
 	 for (i = 0; i < ib->count; i++) 
-	    *elts++ = (GLuint)(*in++) + VB->Primitive[0].basevertex;
+	    *elts++ = (GLuint)(*in++);
       }
       else {
 	 const GLubyte *in = (GLubyte *)ptr;
 	 for (i = 0; i < ib->count; i++) 
-	    *elts++ = (GLuint)(*in++) + VB->Primitive[0].basevertex;
+	    *elts++ = (GLuint)(*in++);
       }
    }
 }
@@ -407,17 +402,13 @@ void _tnl_draw_prims( struct gl_context *ctx,
    TNLcontext *tnl = TNL_CONTEXT(ctx);
    const GLuint TEST_SPLIT = 0;
    const GLint max = TEST_SPLIT ? 8 : tnl->vb.Size - MAX_CLIPPED_VERTICES;
-   GLint max_basevertex = prim->basevertex;
-   GLuint i;
 
    /* Mesa core state should have been validated already */
    assert(ctx->NewState == 0x0);
 
-   for (i = 1; i < nr_prims; i++)
-      max_basevertex = MAX2(max_basevertex, prim[i].basevertex);
-
    if (0)
    {
+      GLuint i;
       printf("%s %d..%d\n", __FUNCTION__, min_index, max_index);
       for (i = 0; i < nr_prims; i++)
 	 printf("prim %d: %s start %d count %d\n", i, 
@@ -434,7 +425,7 @@ void _tnl_draw_prims( struct gl_context *ctx,
 			_tnl_vbo_draw_prims );
       return;
    }
-   else if ((GLint)max_index + max_basevertex > max) {
+   else if (max_index > max) {
       /* The software TNL pipeline has a fixed amount of storage for
        * vertices and it is necessary to split incoming drawing commands
        * if they exceed that limit.
@@ -448,7 +439,7 @@ void _tnl_draw_prims( struct gl_context *ctx,
        * recursively call back into this function.
        */
       vbo_split_prims( ctx, arrays, prim, nr_prims, ib, 
-		       0, max_index + prim->basevertex,
+		       0, max_index,
 		       _tnl_vbo_draw_prims,
 		       &limits );
    }
@@ -460,39 +451,21 @@ void _tnl_draw_prims( struct gl_context *ctx,
       GLuint nr_bo = 0;
       GLuint inst;
 
-      for (i = 0; i < nr_prims;) {
-	 GLuint this_nr_prims;
-
-	 /* Our SW TNL pipeline doesn't handle basevertex yet, so bind_indices
-	  * will rebase the elements to the basevertex, and we'll only
-	  * emit strings of prims with the same basevertex in one draw call.
-	  */
-	 for (this_nr_prims = 1; i + this_nr_prims < nr_prims;
-	      this_nr_prims++) {
-	    if (prim[i].basevertex != prim[i + this_nr_prims].basevertex)
-	       break;
-	 }
-
-         assert(prim[i].num_instances > 0);
-
 	 /* Binding inputs may imply mapping some vertex buffer objects.
 	  * They will need to be unmapped below.
 	  */
-         for (inst = 0; inst < prim[i].num_instances; inst++) {
+      for (inst = 0; inst < prim[0].num_instances; inst++) {
 
-            bind_prims(ctx, &prim[i], this_nr_prims);
-            bind_inputs(ctx, arrays, max_index + prim[i].basevertex + 1,
-                        bo, &nr_bo);
-            bind_indices(ctx, ib, bo, &nr_bo);
+         bind_prims(ctx, prim, nr_prims);
+         bind_inputs(ctx, arrays, max_index + 1,
+                     bo, &nr_bo);
+         bind_indices(ctx, ib, bo, &nr_bo);
 
-            tnl->CurInstance = inst;
-            TNL_CONTEXT(ctx)->Driver.RunPipeline(ctx);
+         tnl->CurInstance = inst;
+         TNL_CONTEXT(ctx)->Driver.RunPipeline(ctx);
 
-            unmap_vbos(ctx, bo, nr_bo);
-            free_space(ctx);
-         }
-
-	 i += this_nr_prims;
+         unmap_vbos(ctx, bo, nr_bo);
+         free_space(ctx);
       }
    }
 }
diff --git a/reactos/dll/opengl/mesa/src/mesa/vbo/vbo.h b/reactos/dll/opengl/mesa/src/mesa/vbo/vbo.h
index 010bf1d5b56..86802d4580e 100644
--- a/reactos/dll/opengl/mesa/src/mesa/vbo/vbo.h
+++ b/reactos/dll/opengl/mesa/src/mesa/vbo/vbo.h
@@ -49,7 +49,6 @@ struct _mesa_prim {
 
    GLuint start;
    GLuint count;
-   GLint basevertex;
    GLsizei num_instances;
 };
 
diff --git a/reactos/dll/opengl/mesa/src/mesa/vbo/vbo_exec_array.c b/reactos/dll/opengl/mesa/src/mesa/vbo/vbo_exec_array.c
index 808532906e1..fbdeac0d465 100644
--- a/reactos/dll/opengl/mesa/src/mesa/vbo/vbo_exec_array.c
+++ b/reactos/dll/opengl/mesa/src/mesa/vbo/vbo_exec_array.c
@@ -736,8 +736,7 @@ vbo_validated_drawrangeelements(struct gl_context *ctx, GLenum mode,
 				GLboolean index_bounds_valid,
 				GLuint start, GLuint end,
 				GLsizei count, GLenum type,
-				const GLvoid *indices,
-				GLint basevertex, GLint numInstances)
+				const GLvoid *indices, GLint numInstances)
 {
    struct vbo_context *vbo = vbo_context(ctx);
    struct vbo_exec_context *exec = &vbo->exec;
@@ -771,7 +770,6 @@ vbo_validated_drawrangeelements(struct gl_context *ctx, GLenum mode,
    prim[0].start = 0;
    prim[0].count = count;
    prim[0].indexed = 1;
-   prim[0].basevertex = basevertex;
    prim[0].num_instances = numInstances;
 
    /* Need to give special consideration to rendering a range of
@@ -810,16 +808,14 @@ vbo_validated_drawrangeelements(struct gl_context *ctx, GLenum mode,
 		    index_bounds_valid, start, end );
 }
 
-
 /**
  * Called by glDrawRangeElementsBaseVertex() in immediate mode.
  */
 static void GLAPIENTRY
-vbo_exec_DrawRangeElementsBaseVertex(GLenum mode,
+vbo_exec_DrawRangeElements(GLenum mode,
 				     GLuint start, GLuint end,
 				     GLsizei count, GLenum type,
-				     const GLvoid *indices,
-				     GLint basevertex)
+				     const GLvoid *indices)
 {
    static GLuint warnCount = 0;
    GLboolean index_bounds_valid = GL_TRUE;
@@ -827,16 +823,16 @@ vbo_exec_DrawRangeElementsBaseVertex(GLenum mode,
 
    if (MESA_VERBOSE & VERBOSE_DRAW)
       _mesa_debug(ctx,
-                "glDrawRangeElementsBaseVertex(%s, %u, %u, %d, %s, %p, %d)\n",
+                "glDrawRangeElementsBaseVertex(%s, %u, %u, %d, %s, %p)\n",
                 _mesa_lookup_enum_by_nr(mode), start, end, count,
-                _mesa_lookup_enum_by_nr(type), indices, basevertex);
+                _mesa_lookup_enum_by_nr(type), indices);
 
    if (!_mesa_validate_DrawRangeElements( ctx, mode, start, end, count,
-                                          type, indices, basevertex ))
+                                          type, indices ))
       return;
 
-   if ((int) end + basevertex < 0 ||
-       start + basevertex >= ctx->Array.ArrayObj->_MaxElement) {
+   if (end < start ||
+       end >= ctx->Array.ArrayObj->_MaxElement) {
       /* The application requested we draw using a range of indices that's
        * outside the bounds of the current VBO.  This is invalid and appears
        * to give undefined results.  The safest thing to do is to simply
@@ -846,10 +842,10 @@ vbo_exec_DrawRangeElementsBaseVertex(GLenum mode,
        */
       if (warnCount++ < 10) {
          _mesa_warning(ctx, "glDrawRangeElements(start %u, end %u, "
-                       "basevertex %d, count %d, type 0x%x, indices=%p):\n"
+                       "count %d, type 0x%x, indices=%p):\n"
                        "\trange is outside VBO bounds (max=%u); ignoring.\n"
                        "\tThis should be fixed in the application.",
-                       start, end, basevertex, count, type, indices,
+                       start, end, count, type, indices,
                        ctx->Array.ArrayObj->_MaxElement - 1);
       }
       index_bounds_valid = GL_FALSE;
@@ -872,18 +868,12 @@ vbo_exec_DrawRangeElementsBaseVertex(GLenum mode,
    }
 
    if (0) {
-      printf("glDraw[Range]Elements{,BaseVertex}"
-	     "(start %u, end %u, type 0x%x, count %d) ElemBuf %u, "
-	     "base %d\n",
+      printf("glDraw[Range]Elements"
+	     "(start %u, end %u, type 0x%x, count %d) ElemBuf %u\n",
 	     start, end, type, count,
-	     ctx->Array.ArrayObj->ElementArrayBufferObj->Name,
-	     basevertex);
+	     ctx->Array.ArrayObj->ElementArrayBufferObj->Name);
    }
 
-   if ((int) start + basevertex < 0 ||
-       end + basevertex >= ctx->Array.ArrayObj->_MaxElement)
-      index_bounds_valid = GL_FALSE;
-
 #if 0
    check_draw_elements_data(ctx, count, type, indices);
 #else
@@ -891,27 +881,7 @@ vbo_exec_DrawRangeElementsBaseVertex(GLenum mode,
 #endif
 
    vbo_validated_drawrangeelements(ctx, mode, index_bounds_valid, start, end,
-				   count, type, indices, basevertex, 1);
-}
-
-
-/**
- * Called by glDrawRangeElements() in immediate mode.
- */
-static void GLAPIENTRY
-vbo_exec_DrawRangeElements(GLenum mode, GLuint start, GLuint end,
-                           GLsizei count, GLenum type, const GLvoid *indices)
-{
-   if (MESA_VERBOSE & VERBOSE_DRAW) {
-      GET_CURRENT_CONTEXT(ctx);
-      _mesa_debug(ctx,
-                  "glDrawRangeElements(%s, %u, %u, %d, %s, %p)\n",
-                  _mesa_lookup_enum_by_nr(mode), start, end, count,
-                  _mesa_lookup_enum_by_nr(type), indices);
-   }
-
-   vbo_exec_DrawRangeElementsBaseVertex(mode, start, end, count, type,
-					indices, 0);
+				   count, type, indices, 1);
 }
 
 
@@ -929,34 +899,11 @@ vbo_exec_DrawElements(GLenum mode, GLsizei count, GLenum type,
                   _mesa_lookup_enum_by_nr(mode), count,
                   _mesa_lookup_enum_by_nr(type), indices);
 
-   if (!_mesa_validate_DrawElements( ctx, mode, count, type, indices, 0 ))
+   if (!_mesa_validate_DrawElements( ctx, mode, count, type, indices))
       return;
 
    vbo_validated_drawrangeelements(ctx, mode, GL_FALSE, ~0, ~0,
-				   count, type, indices, 0, 1);
-}
-
-
-/**
- * Called by glDrawElementsBaseVertex() in immediate mode.
- */
-static void GLAPIENTRY
-vbo_exec_DrawElementsBaseVertex(GLenum mode, GLsizei count, GLenum type,
-				const GLvoid *indices, GLint basevertex)
-{
-   GET_CURRENT_CONTEXT(ctx);
-
-   if (MESA_VERBOSE & VERBOSE_DRAW)
-      _mesa_debug(ctx, "glDrawElementsBaseVertex(%s, %d, %s, %p, %d)\n",
-                  _mesa_lookup_enum_by_nr(mode), count,
-                  _mesa_lookup_enum_by_nr(type), indices, basevertex);
-
-   if (!_mesa_validate_DrawElements( ctx, mode, count, type, indices,
-				     basevertex ))
-      return;
-
-   vbo_validated_drawrangeelements(ctx, mode, GL_FALSE, ~0, ~0,
-				   count, type, indices, basevertex, 1);
+				   count, type, indices, 1);
 }
 
 
@@ -975,35 +922,11 @@ vbo_exec_DrawElementsInstanced(GLenum mode, GLsizei count, GLenum type,
                   _mesa_lookup_enum_by_nr(type), indices, numInstances);
 
    if (!_mesa_validate_DrawElementsInstanced(ctx, mode, count, type, indices,
-                                             numInstances, 0))
+                                             numInstances))
       return;
 
    vbo_validated_drawrangeelements(ctx, mode, GL_FALSE, ~0, ~0,
-				   count, type, indices, 0, numInstances);
-}
-
-/**
- * Called by glDrawElementsInstancedBaseVertex() in immediate mode.
- */
-static void GLAPIENTRY
-vbo_exec_DrawElementsInstancedBaseVertex(GLenum mode, GLsizei count, GLenum type,
-                               const GLvoid *indices, GLsizei numInstances,
-                               GLint basevertex)
-{
-   GET_CURRENT_CONTEXT(ctx);
-
-   if (MESA_VERBOSE & VERBOSE_DRAW)
-      _mesa_debug(ctx, "glDrawElementsInstancedBaseVertex(%s, %d, %s, %p, %d; %d)\n",
-                  _mesa_lookup_enum_by_nr(mode), count,
-                  _mesa_lookup_enum_by_nr(type), indices,
-                  numInstances, basevertex);
-
-   if (!_mesa_validate_DrawElementsInstanced(ctx, mode, count, type, indices,
-                                             numInstances, basevertex))
-      return;
-
-   vbo_validated_drawrangeelements(ctx, mode, GL_FALSE, ~0, ~0,
-				   count, type, indices, basevertex, numInstances);
+				   count, type, indices, numInstances);
 }
 
 
@@ -1015,8 +938,7 @@ vbo_exec_DrawElementsInstancedBaseVertex(GLenum mode, GLsizei count, GLenum type
 static void
 vbo_validated_multidrawelements(struct gl_context *ctx, GLenum mode,
 				const GLsizei *count, GLenum type,
-				const GLvoid **indices, GLsizei primcount,
-				const GLint *basevertex)
+				const GLvoid **indices, GLsizei primcount)
 {
    struct vbo_context *vbo = vbo_context(ctx);
    struct vbo_exec_context *exec = &vbo->exec;
@@ -1097,11 +1019,7 @@ vbo_validated_multidrawelements(struct gl_context *ctx, GLenum mode,
 	 prim[i].start = ((uintptr_t)indices[i] - min_index_ptr) / index_type_size;
 	 prim[i].count = count[i];
 	 prim[i].indexed = 1;
-         prim[i].num_instances = 1;
-	 if (basevertex != NULL)
-	    prim[i].basevertex = basevertex[i];
-	 else
-	    prim[i].basevertex = 0;
+     prim[i].num_instances = 1;
       }
 
       check_buffers_are_unmapped(exec->array.inputs);
@@ -1124,10 +1042,6 @@ vbo_validated_multidrawelements(struct gl_context *ctx, GLenum mode,
 	 prim[0].count = count[i];
 	 prim[0].indexed = 1;
          prim[0].num_instances = 1;
-	 if (basevertex != NULL)
-	    prim[0].basevertex = basevertex[i];
-	 else
-	    prim[0].basevertex = 0;
 
          check_buffers_are_unmapped(exec->array.inputs);
          vbo->draw_prims(ctx, exec->array.inputs, prim, 1, &ib,
@@ -1151,36 +1065,11 @@ vbo_exec_MultiDrawElements(GLenum mode,
    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 
    for (i = 0; i < primcount; i++) {
-      if (!_mesa_validate_DrawElements(ctx, mode, count[i], type, indices[i],
-				       0))
+      if (!_mesa_validate_DrawElements(ctx, mode, count[i], type, indices[i]))
 	 return;
    }
 
-   vbo_validated_multidrawelements(ctx, mode, count, type, indices, primcount,
-				   NULL);
-}
-
-
-static void GLAPIENTRY
-vbo_exec_MultiDrawElementsBaseVertex(GLenum mode,
-				     const GLsizei *count, GLenum type,
-				     const GLvoid **indices,
-				     GLsizei primcount,
-				     const GLsizei *basevertex)
-{
-   GET_CURRENT_CONTEXT(ctx);
-   GLint i;
-
-   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
-
-   for (i = 0; i < primcount; i++) {
-      if (!_mesa_validate_DrawElements(ctx, mode, count[i], type, indices[i],
-				       basevertex[i]))
-	 return;
-   }
-
-   vbo_validated_multidrawelements(ctx, mode, count, type, indices, primcount,
-				   basevertex);
+   vbo_validated_multidrawelements(ctx, mode, count, type, indices, primcount);
 }
 
 /**
@@ -1194,12 +1083,8 @@ vbo_exec_array_init( struct vbo_exec_context *exec )
    exec->vtxfmt.DrawElements = vbo_exec_DrawElements;
    exec->vtxfmt.DrawRangeElements = vbo_exec_DrawRangeElements;
    exec->vtxfmt.MultiDrawElementsEXT = vbo_exec_MultiDrawElements;
-   exec->vtxfmt.DrawElementsBaseVertex = vbo_exec_DrawElementsBaseVertex;
-   exec->vtxfmt.DrawRangeElementsBaseVertex = vbo_exec_DrawRangeElementsBaseVertex;
-   exec->vtxfmt.MultiDrawElementsBaseVertex = vbo_exec_MultiDrawElementsBaseVertex;
    exec->vtxfmt.DrawArraysInstanced = vbo_exec_DrawArraysInstanced;
    exec->vtxfmt.DrawElementsInstanced = vbo_exec_DrawElementsInstanced;
-   exec->vtxfmt.DrawElementsInstancedBaseVertex = vbo_exec_DrawElementsInstancedBaseVertex;
 }
 
 
@@ -1232,14 +1117,6 @@ _mesa_DrawElements(GLenum mode, GLsizei count, GLenum type,
 }
 
 
-void GLAPIENTRY
-_mesa_DrawElementsBaseVertex(GLenum mode, GLsizei count, GLenum type,
-			     const GLvoid *indices, GLint basevertex)
-{
-   vbo_exec_DrawElementsBaseVertex(mode, count, type, indices, basevertex);
-}
-
-
 void GLAPIENTRY
 _mesa_DrawRangeElements(GLenum mode, GLuint start, GLuint end, GLsizei count,
                         GLenum type, const GLvoid *indices)
@@ -1248,16 +1125,6 @@ _mesa_DrawRangeElements(GLenum mode, GLuint start, GLuint end, GLsizei count,
 }
 
 
-void GLAPIENTRY
-_mesa_DrawRangeElementsBaseVertex(GLenum mode, GLuint start, GLuint end,
-				  GLsizei count, GLenum type,
-				  const GLvoid *indices, GLint basevertex)
-{
-   vbo_exec_DrawRangeElementsBaseVertex(mode, start, end, count, type,
-					indices, basevertex);
-}
-
-
 void GLAPIENTRY
 _mesa_MultiDrawElementsEXT(GLenum mode, const GLsizei *count, GLenum type,
 			   const GLvoid **indices, GLsizei primcount)
@@ -1265,13 +1132,3 @@ _mesa_MultiDrawElementsEXT(GLenum mode, const GLsizei *count, GLenum type,
    vbo_exec_MultiDrawElements(mode, count, type, indices, primcount);
 }
 
-
-void GLAPIENTRY
-_mesa_MultiDrawElementsBaseVertex(GLenum mode,
-				  const GLsizei *count, GLenum type,
-				  const GLvoid **indices, GLsizei primcount,
-				  const GLint *basevertex)
-{
-   vbo_exec_MultiDrawElementsBaseVertex(mode, count, type, indices,
-					primcount, basevertex);
-}
diff --git a/reactos/dll/opengl/mesa/src/mesa/vbo/vbo_noop.c b/reactos/dll/opengl/mesa/src/mesa/vbo/vbo_noop.c
index 43001120784..ee2181fc3d9 100644
--- a/reactos/dll/opengl/mesa/src/mesa/vbo/vbo_noop.c
+++ b/reactos/dll/opengl/mesa/src/mesa/vbo/vbo_noop.c
@@ -371,12 +371,6 @@ _mesa_noop_DrawElements(GLenum mode, GLsizei count, GLenum type,
 {
 }
 
-static void GLAPIENTRY
-_mesa_noop_DrawElementsBaseVertex(GLenum mode, GLsizei count, GLenum type,
-                                  const GLvoid * indices, GLint basevertex)
-{
-}
-
 
 static void GLAPIENTRY
 _mesa_noop_DrawRangeElements(GLenum mode,
@@ -392,24 +386,6 @@ _mesa_noop_MultiDrawElements(GLenum mode, const GLsizei * count, GLenum type,
 {
 }
 
-static void GLAPIENTRY
-_mesa_noop_DrawRangeElementsBaseVertex(GLenum mode,
-                                       GLuint start, GLuint end,
-                                       GLsizei count, GLenum type,
-                                       const GLvoid * indices,
-                                       GLint basevertex)
-{
-}
-
-static void GLAPIENTRY
-_mesa_noop_MultiDrawElementsBaseVertex(GLenum mode, const GLsizei * count,
-                                       GLenum type,
-                                       const GLvoid ** indices,
-                                       GLsizei primcount,
-                                       const GLint * basevertex)
-{
-}
-
 static void GLAPIENTRY
 _mesa_noop_EvalMesh1(GLenum mode, GLint i1, GLint i2)
 {
@@ -500,9 +476,6 @@ _mesa_noop_vtxfmt_init(GLvertexformat * vfmt)
    vfmt->DrawElements = _mesa_noop_DrawElements;
    vfmt->DrawRangeElements = _mesa_noop_DrawRangeElements;
    vfmt->MultiDrawElementsEXT = _mesa_noop_MultiDrawElements;
-   vfmt->DrawElementsBaseVertex = _mesa_noop_DrawElementsBaseVertex;
-   vfmt->DrawRangeElementsBaseVertex = _mesa_noop_DrawRangeElementsBaseVertex;
-   vfmt->MultiDrawElementsBaseVertex = _mesa_noop_MultiDrawElementsBaseVertex;
 }
 
 
diff --git a/reactos/dll/opengl/mesa/src/mesa/vbo/vbo_rebase.c b/reactos/dll/opengl/mesa/src/mesa/vbo/vbo_rebase.c
index 8efad4e6ed8..d72d71c9180 100644
--- a/reactos/dll/opengl/mesa/src/mesa/vbo/vbo_rebase.c
+++ b/reactos/dll/opengl/mesa/src/mesa/vbo/vbo_rebase.c
@@ -138,22 +138,7 @@ void vbo_rebase_prims( struct gl_context *ctx,
       printf("%s %d..%d\n", __FUNCTION__, min_index, max_index);
 
 
-   /* XXX this path is disabled for now.
-    * There's rendering corruption in some apps when it's enabled.
-    */
-   if (0 && ib && ctx->Extensions.ARB_draw_elements_base_vertex) {
-      /* If we can just tell the hardware or the TNL to interpret our
-       * indices with a different base, do so.
-       */
-      tmp_prims = (struct _mesa_prim *)malloc(sizeof(*prim) * nr_prims);
-
-      for (i = 0; i < nr_prims; i++) {
-	 tmp_prims[i] = prim[i];
-	 tmp_prims[i].basevertex -= min_index;
-      }
-
-      prim = tmp_prims;
-   } else if (ib) {
+   if (ib) {
       /* Unfortunately need to adjust each index individually.
        */
       GLboolean map_ib = ib->obj->Name && !ib->obj->Pointer;
diff --git a/reactos/dll/opengl/mesa/src/mesa/vbo/vbo_save_api.c b/reactos/dll/opengl/mesa/src/mesa/vbo/vbo_save_api.c
index 82c57109db8..4546e9318a4 100644
--- a/reactos/dll/opengl/mesa/src/mesa/vbo/vbo_save_api.c
+++ b/reactos/dll/opengl/mesa/src/mesa/vbo/vbo_save_api.c
@@ -979,40 +979,6 @@ _save_DrawRangeElements(GLenum mode, GLuint start, GLuint end,
 }
 
 
-static void GLAPIENTRY
-_save_DrawElementsBaseVertex(GLenum mode, GLsizei count, GLenum type,
-                             const GLvoid * indices, GLint basevertex)
-{
-   GET_CURRENT_CONTEXT(ctx);
-   (void) mode;
-   (void) count;
-   (void) type;
-   (void) indices;
-   (void) basevertex;
-   _mesa_compile_error(ctx, GL_INVALID_OPERATION, "glDrawElements");
-}
-
-
-static void GLAPIENTRY
-_save_DrawRangeElementsBaseVertex(GLenum mode,
-                                  GLuint start,
-                                  GLuint end,
-                                  GLsizei count,
-                                  GLenum type,
-                                  const GLvoid * indices, GLint basevertex)
-{
-   GET_CURRENT_CONTEXT(ctx);
-   (void) mode;
-   (void) start;
-   (void) end;
-   (void) count;
-   (void) type;
-   (void) indices;
-   (void) basevertex;
-   _mesa_compile_error(ctx, GL_INVALID_OPERATION, "glDrawRangeElements");
-}
-
-
 static void GLAPIENTRY
 _save_DrawArrays(GLenum mode, GLint start, GLsizei count)
 {
@@ -1038,23 +1004,6 @@ _save_MultiDrawElements(GLenum mode, const GLsizei *count, GLenum type,
 }
 
 
-static void GLAPIENTRY
-_save_MultiDrawElementsBaseVertex(GLenum mode, const GLsizei *count,
-                                  GLenum type, const GLvoid **indices,
-                                  GLsizei primcount, const GLint *basevertex)
-{
-   GET_CURRENT_CONTEXT(ctx);
-   (void) mode;
-   (void) count;
-   (void) type;
-   (void) indices;
-   (void) primcount;
-   (void) basevertex;
-   _mesa_compile_error(ctx, GL_INVALID_OPERATION,
-                       "glMultiDrawElementsBaseVertex");
-}
-
-
 static void GLAPIENTRY
 _save_Rectf(GLfloat x1, GLfloat y1, GLfloat x2, GLfloat y2)
 {
@@ -1168,7 +1117,7 @@ _save_OBE_DrawElements(GLenum mode, GLsizei count, GLenum type,
    struct vbo_save_context *save = &vbo_context(ctx)->save;
    GLint i;
 
-   if (!_mesa_validate_DrawElements(ctx, mode, count, type, indices, 0))
+   if (!_mesa_validate_DrawElements(ctx, mode, count, type, indices))
       return;
 
    if (save->out_of_memory)
@@ -1216,7 +1165,7 @@ _save_OBE_DrawRangeElements(GLenum mode, GLuint start, GLuint end,
    struct vbo_save_context *save = &vbo_context(ctx)->save;
 
    if (!_mesa_validate_DrawRangeElements(ctx, mode,
-                                         start, end, count, type, indices, 0))
+                                         start, end, count, type, indices))
       return;
 
    if (save->out_of_memory)
@@ -1240,25 +1189,6 @@ _save_OBE_MultiDrawElements(GLenum mode, const GLsizei *count, GLenum type,
 }
 
 
-static void GLAPIENTRY
-_save_OBE_MultiDrawElementsBaseVertex(GLenum mode, const GLsizei *count,
-                                      GLenum type,
-                                      const GLvoid **indices,
-                                      GLsizei primcount,
-                                      const GLint *basevertex)
-{
-   GLsizei i;
-
-   for (i = 0; i < primcount; i++) {
-      if (count[i] > 0) {
-	 CALL_DrawElementsBaseVertex(GET_DISPATCH(), (mode, count[i], type,
-						      indices[i],
-						      basevertex[i]));
-      }
-   }
-}
-
-
 static void
 _save_vtxfmt_init(struct gl_context *ctx)
 {
@@ -1356,10 +1286,7 @@ _save_vtxfmt_init(struct gl_context *ctx)
    vfmt->DrawArrays = _save_DrawArrays;
    vfmt->DrawElements = _save_DrawElements;
    vfmt->DrawRangeElements = _save_DrawRangeElements;
-   vfmt->DrawElementsBaseVertex = _save_DrawElementsBaseVertex;
-   vfmt->DrawRangeElementsBaseVertex = _save_DrawRangeElementsBaseVertex;
    vfmt->MultiDrawElementsEXT = _save_MultiDrawElements;
-   vfmt->MultiDrawElementsBaseVertex = _save_MultiDrawElementsBaseVertex;
 }
 
 
@@ -1562,7 +1489,6 @@ vbo_save_api_init(struct vbo_save_context *save)
    ctx->ListState.ListVtxfmt.DrawElements = _save_OBE_DrawElements;
    ctx->ListState.ListVtxfmt.DrawRangeElements = _save_OBE_DrawRangeElements;
    ctx->ListState.ListVtxfmt.MultiDrawElementsEXT = _save_OBE_MultiDrawElements;
-   ctx->ListState.ListVtxfmt.MultiDrawElementsBaseVertex = _save_OBE_MultiDrawElementsBaseVertex;
    _mesa_install_save_vtxfmt(ctx, &ctx->ListState.ListVtxfmt);
 }
 
diff --git a/reactos/dll/opengl/mesa/src/mesa/vbo/vbo_split.c b/reactos/dll/opengl/mesa/src/mesa/vbo/vbo_split.c
index c933a3f9a04..49bdb0a6b46 100644
--- a/reactos/dll/opengl/mesa/src/mesa/vbo/vbo_split.c
+++ b/reactos/dll/opengl/mesa/src/mesa/vbo/vbo_split.c
@@ -108,14 +108,6 @@ void vbo_split_prims( struct gl_context *ctx,
 		      vbo_draw_func draw,
 		      const struct split_limits *limits )
 {
-   GLint max_basevertex = prim->basevertex;
-   GLuint i;
-
-   for (i = 1; i < nr_prims; i++)
-      max_basevertex = MAX2(max_basevertex, prim[i].basevertex);
-
-   /* XXX max_basevertex is computed but not used, why? */
-
    if (ib) {
       if (limits->max_indices == 0) {
 	 /* Could traverse the indices, re-emitting vertices in turn.
diff --git a/reactos/dll/opengl/mesa/src/mesa/vbo/vbo_split_copy.c b/reactos/dll/opengl/mesa/src/mesa/vbo/vbo_split_copy.c
index 40e526b1d73..3ec4eb69a83 100644
--- a/reactos/dll/opengl/mesa/src/mesa/vbo/vbo_split_copy.c
+++ b/reactos/dll/opengl/mesa/src/mesa/vbo/vbo_split_copy.c
@@ -588,40 +588,28 @@ void vbo_split_copy( struct gl_context *ctx,
 		     const struct split_limits *limits )
 {
    struct copy_context copy;
-   GLuint i, this_nr_prims;
+   GLuint i;
 
-   for (i = 0; i < nr_prims;) {
-      /* Our SW TNL pipeline doesn't handle basevertex yet, so bind_indices
-       * will rebase the elements to the basevertex, and we'll only
-       * emit strings of prims with the same basevertex in one draw call.
-       */
-      for (this_nr_prims = 1; i + this_nr_prims < nr_prims;
-	   this_nr_prims++) {
-	 if (prim[i].basevertex != prim[i + this_nr_prims].basevertex)
-	    break;
-      }
+   memset(&copy, 0, sizeof(copy));
 
-      memset(&copy, 0, sizeof(copy));
+   /* Require indexed primitives:
+    */
+   assert(ib);
 
-      /* Require indexed primitives:
-       */
-      assert(ib);
+   copy.ctx = ctx;
+   copy.array = arrays;
+   copy.prim = prim;
+   copy.nr_prims = nr_prims;
+   copy.ib = ib;
+   copy.draw = draw;
+   copy.limits = limits;
 
-      copy.ctx = ctx;
-      copy.array = arrays;
-      copy.prim = &prim[i];
-      copy.nr_prims = this_nr_prims;
-      copy.ib = ib;
-      copy.draw = draw;
-      copy.limits = limits;
+   /* Clear the vertex cache:
+    */
+   for (i = 0; i < ELT_TABLE_SIZE; i++)
+      copy.vert_cache[i].in = ~0;
 
-      /* Clear the vertex cache:
-       */
-      for (i = 0; i < ELT_TABLE_SIZE; i++)
-	 copy.vert_cache[i].in = ~0;
-
-      replay_init(&copy);
-      replay_elts(&copy);
-      replay_finish(&copy);
-   }
+   replay_init(&copy);
+   replay_elts(&copy);
+   replay_finish(&copy);
 }