fontconfig mesa git update 25 oct 2013

fontconfig       commit 65872e9e46d17e4461c3a891ef23abe156005e04
mesa             commit e8f6f244bb1963c4af81f431865355beef1b9cbb

26 files changed, 726 insertions, 228 deletions

diff --git a/mesalib/configure.ac b/mesalib/configure.ac
index dfa35b41b..91b9871d7 100644
--- a/mesalib/configure.ac
+++ b/mesalib/configure.ac
@@ -711,8 +711,6 @@ fi
 AM_CONDITIONAL(HAVE_DRI_GLX, test "x$enable_glx" = xyes -a \
                                   "x$enable_dri" = xyes)
 AM_CONDITIONAL(HAVE_DRI, test "x$enable_dri" = xyes)
-AM_CONDITIONAL(NEED_LIBMESA, test "x$enable_xlib_glx" = xyes -o \
-                                  "x$enable_osmesa" = xyes)
 
 AC_ARG_ENABLE([shared-glapi],
     [AS_HELP_STRING([--enable-shared-glapi],
@@ -864,8 +862,6 @@ AC_SUBST([GLESv1_CM_PC_LIB_PRIV])
 AC_SUBST([GLESv2_LIB_DEPS])
 AC_SUBST([GLESv2_PC_LIB_PRIV])
 
-DRI_LIB_DEPS="\$(top_builddir)/src/mesa/libdricore/libdricore${VERSION}.la"
-
 AC_SUBST([HAVE_XF86VIDMODE])
 
 dnl
@@ -1026,10 +1022,15 @@ if test "x$enable_dri" = xyes; then
     LIBS="$save_LIBS"
 
     # If we are building any DRI driver other than swrast.
-    if test -n "$DRI_DIRS" -a x"$DRI_DIRS" != xswrast; then
-        # ... libdrm is required
-        if test "x$have_libdrm" != xyes; then
-            AC_MSG_ERROR([DRI drivers requires libdrm >= $LIBDRM_REQUIRED])
+    if test -n "$DRI_DIRS"; then
+        if test x"$DRI_DIRS" != xswrast; then
+            # ... libdrm is required
+            if test "x$have_libdrm" != xyes; then
+                AC_MSG_ERROR([DRI drivers requires libdrm >= $LIBDRM_REQUIRED])
+            fi
+            DRICOMMON_NEED_LIBDRM=yes
+        else
+            DRICOMMON_NEED_LIBDRM=no
         fi
     fi
 
@@ -1039,7 +1040,11 @@ if test "x$enable_dri" = xyes; then
 
     DRI_DRIVER_LDFLAGS="-module -avoid-version -shared -Wl,-Bsymbolic"
 fi
-AM_CONDITIONAL(NEED_LIBDRICORE, test -n "$DRI_DIRS")
+
+AM_CONDITIONAL(NEED_MEGADRIVER, test -n "$DRI_DIRS")
+AM_CONDITIONAL(NEED_LIBMESA, test "x$enable_xlib_glx" = xyes -o \
+                                  "x$enable_osmesa" = xyes -o \
+                                  -n "$DRI_DIRS")
 AC_SUBST([EXPAT_INCLUDES])
 AC_SUBST([DRI_LIB_DEPS])
 AC_SUBST([DRI_DRIVER_LDFLAGS])
@@ -1759,6 +1764,7 @@ if test "x$with_gallium_drivers" != x; then
             fi
             GALLIUM_WINSYS_DIRS="$GALLIUM_WINSYS_DIRS i915/sw"
             gallium_check_st "i915/drm" "dri-i915" "xorg-i915"
+            DRICOMMON_NEED_LIBDRM=yes
             ;;
         xilo)
             HAVE_GALLIUM_ILO=yes
@@ -1766,6 +1772,7 @@ if test "x$with_gallium_drivers" != x; then
             gallium_require_drm_loader
             GALLIUM_DRIVERS_DIRS="$GALLIUM_DRIVERS_DIRS ilo"
             gallium_check_st "intel/drm" "dri-ilo"
+            DRICOMMON_NEED_LIBDRM=yes
             ;;
         xr300)
             HAVE_GALLIUM_R300=yes
@@ -1773,6 +1780,7 @@ if test "x$with_gallium_drivers" != x; then
             gallium_require_llvm "Gallium R300"
             GALLIUM_DRIVERS_DIRS="$GALLIUM_DRIVERS_DIRS r300"
             gallium_check_st "radeon/drm" "r300/dri" "" "" "r300/xvmc" "r300/vdpau"
+            DRICOMMON_NEED_LIBDRM=yes
             ;;
         xr600)
             HAVE_GALLIUM_R600=yes
@@ -1790,6 +1798,7 @@ if test "x$with_gallium_drivers" != x; then
                 LLVM_COMPONENTS="${LLVM_COMPONENTS} bitreader asmparser"
             fi
             gallium_check_st "radeon/drm" "r600/dri" "r600/xorg" "" "r600/xvmc" "r600/vdpau"
+            DRICOMMON_NEED_LIBDRM=yes
             ;;
         xradeonsi)
             HAVE_GALLIUM_RADEONSI=yes
@@ -1798,6 +1807,7 @@ if test "x$with_gallium_drivers" != x; then
             GALLIUM_DRIVERS_DIRS="$GALLIUM_DRIVERS_DIRS radeonsi"
             radeon_llvm_check
             gallium_check_st "radeon/drm" "radeonsi/dri" "radeonsi/xorg" "" "" "radeonsi/vdpau" ""
+            DRICOMMON_NEED_LIBDRM=yes
             ;;
         xnouveau)
             HAVE_GALLIUM_NOUVEAU=yes
@@ -1805,6 +1815,7 @@ if test "x$with_gallium_drivers" != x; then
             gallium_require_drm_loader
             GALLIUM_DRIVERS_DIRS="$GALLIUM_DRIVERS_DIRS nouveau"
             gallium_check_st "nouveau/drm" "dri-nouveau" "xorg-nouveau" "" "xvmc-nouveau" "vdpau-nouveau"
+            DRICOMMON_NEED_LIBDRM=yes
             ;;
         xfreedreno)
             HAVE_GALLIUM_FREEDRENO=yes
@@ -1812,6 +1823,7 @@ if test "x$with_gallium_drivers" != x; then
             gallium_require_drm_loader
             GALLIUM_DRIVERS_DIRS="$GALLIUM_DRIVERS_DIRS freedreno"
             gallium_check_st "freedreno/drm" "dri-freedreno" "" "" "" ""
+            DRICOMMON_NEED_LIBDRM=yes
             ;;
         xswrast)
             HAVE_GALLIUM_SOFTPIPE=yes
@@ -1943,10 +1955,7 @@ AM_CONDITIONAL(HAVE_MESA_LLVM, test x$MESA_LLVM = x1)
 
 AC_SUBST([ELF_LIB])
 
-AM_CONDITIONAL(NEED_LIBPROGRAM, test "x$with_gallium_drivers" != x -o \
-                                     "x$enable_xlib_glx" = xyes -o \
-                                     "x$enable_osmesa" = xyes -o \
-                                     "x$enable_gallium_osmesa" = xyes)
+AM_CONDITIONAL(DRICOMMON_NEED_LIBDRM, test "x$DRICOMMON_NEED_LIBDRM" = xyes)
 AM_CONDITIONAL(HAVE_X11_DRIVER, test "x$enable_xlib_glx" = xyes)
 AM_CONDITIONAL(HAVE_OSMESA, test "x$enable_osmesa" = xyes)
 AM_CONDITIONAL(HAVE_GALLIUM_OSMESA, test "x$enable_gallium_osmesa" = xyes)
@@ -2109,7 +2118,6 @@ AC_CONFIG_FILES([Makefile
 		src/mesa/drivers/osmesa/Makefile
 		src/mesa/drivers/osmesa/osmesa.pc
 		src/mesa/drivers/x11/Makefile
-		src/mesa/libdricore/Makefile
 		src/mesa/main/tests/Makefile
 		src/mesa/main/tests/hash_table/Makefile
 		src/mesa/program/Makefile
diff --git a/mesalib/include/GL/internal/dri_interface.h b/mesalib/include/GL/internal/dri_interface.h
index 33b41ea3b..48993b939 100644
--- a/mesalib/include/GL/internal/dri_interface.h
+++ b/mesalib/include/GL/internal/dri_interface.h
@@ -330,12 +330,6 @@ struct __DRI2throttleExtensionRec {
 		    enum __DRI2throttleReason reason);
 };
 
-/**
- * XML document describing the configuration options supported by the
- * driver.
- */
-extern const char __driConfigOptions[];
-
 /*@}*/
 
 /**
@@ -494,6 +488,19 @@ struct __DRIuseInvalidateExtensionRec {
 #define __DRI_DRIVER_EXTENSIONS "__driDriverExtensions"
 
 /**
+ * This symbol replaces the __DRI_DRIVER_EXTENSIONS symbol, and will be
+ * suffixed by "_drivername", allowing multiple drivers to be built into one
+ * library, and also giving the driver the chance to return a variable driver
+ * extensions struct depending on the driver name being loaded or any other
+ * system state.
+ *
+ * The function prototype is:
+ *
+ * const __DRIextension **__driDriverGetExtensions_drivername(void);
+ */
+#define __DRI_DRIVER_GET_EXTENSIONS "__driDriverGetExtensions"
+
+/**
  * Tokens for __DRIconfig attribs.  A number of attributes defined by
  * GLX or EGL standards are not in the table, as they must be provided
  * by the loader.  For example, FBConfig ID or visual ID, drawable type.
@@ -706,7 +713,7 @@ struct __DRIlegacyExtensionRec {
  * conjunction with the core extension.
  */
 #define __DRI_SWRAST "DRI_SWRast"
-#define __DRI_SWRAST_VERSION 3
+#define __DRI_SWRAST_VERSION 4
 
 struct __DRIswrastExtensionRec {
     __DRIextension base;
@@ -742,6 +749,18 @@ struct __DRIswrastExtensionRec {
 					 const uint32_t *attribs,
 					 unsigned *error,
 					 void *loaderPrivate);
+
+   /**
+    * createNewScreen() with the driver extensions passed in.
+    *
+    * \since version 4
+    */
+   __DRIscreen *(*createNewScreen2)(int screen,
+                                    const __DRIextension **loader_extensions,
+                                    const __DRIextension **driver_extensions,
+                                    const __DRIconfig ***driver_configs,
+                                    void *loaderPrivate);
+
 };
 
 /**
@@ -824,7 +843,7 @@ struct __DRIdri2LoaderExtensionRec {
  * constructors for DRI2.
  */
 #define __DRI_DRI2 "DRI_DRI2"
-#define __DRI_DRI2_VERSION 3
+#define __DRI_DRI2_VERSION 4
 
 #define __DRI_API_OPENGL	0	/**< OpenGL compatibility profile */
 #define __DRI_API_GLES		1	/**< OpenGL ES 1.x */
@@ -932,6 +951,17 @@ struct __DRIdri2ExtensionRec {
 					 const uint32_t *attribs,
 					 unsigned *error,
 					 void *loaderPrivate);
+
+   /**
+    * createNewScreen with the driver's extension list passed in.
+    *
+    * \since version 4
+    */
+    __DRIscreen *(*createNewScreen2)(int screen, int fd,
+                                     const __DRIextension **loader_extensions,
+                                     const __DRIextension **driver_extensions,
+                                     const __DRIconfig ***driver_configs,
+                                     void *loaderPrivate);
 };
 
 
@@ -1226,4 +1256,35 @@ struct __DRIrobustnessExtensionRec {
    __DRIextension base;
 };
 
+/**
+ * DRI config options extension.
+ *
+ * This extension provides the XML string containing driver options for use by
+ * the loader in supporting the driconf application.
+ */
+#define __DRI_CONFIG_OPTIONS "DRI_ConfigOptions"
+#define __DRI_CONFIG_OPTIONS_VERSION 1
+
+typedef struct __DRIconfigOptionsExtensionRec {
+   __DRIextension base;
+   const char *xml;
+} __DRIconfigOptionsExtension;
+
+/**
+ * This extension provides a driver vtable to a set of common driver helper
+ * functions (driCoreExtension, driDRI2Extension) within the driver
+ * implementation, as opposed to having to pass them through a global
+ * variable.
+ *
+ * It is not intended to be public API to the actual loader, and the vtable
+ * layout may change at any time.
+ */
+#define __DRI_DRIVER_VTABLE "DRI_DriverVtable"
+#define __DRI_DRIVER_VTABLE_VERSION 1
+
+typedef struct __DRIDriverVtableExtensionRec {
+    __DRIextension base;
+    const struct __DriverAPIRec *vtable;
+} __DRIDriverVtableExtension;
+
 #endif
diff --git a/mesalib/src/glsl/ast_to_hir.cpp b/mesalib/src/glsl/ast_to_hir.cpp
index b644b22c7..3551a5956 100644
--- a/mesalib/src/glsl/ast_to_hir.cpp
+++ b/mesalib/src/glsl/ast_to_hir.cpp
@@ -60,6 +60,10 @@
 static void
 detect_conflicting_assignments(struct _mesa_glsl_parse_state *state,
 			       exec_list *instructions);
+static void
+remove_per_vertex_blocks(exec_list *instructions,
+                         _mesa_glsl_parse_state *state, ir_variable_mode mode);
+
 
 void
 _mesa_ast_to_hir(exec_list *instructions, struct _mesa_glsl_parse_state *state)
@@ -114,6 +118,40 @@ _mesa_ast_to_hir(exec_list *instructions, struct _mesa_glsl_parse_state *state)
       var->remove();
       instructions->push_head(var);
    }
+
+   /* From section 7.1 (Built-In Language Variables) of the GLSL 4.10 spec:
+    *
+    *     If multiple shaders using members of a built-in block belonging to
+    *     the same interface are linked together in the same program, they
+    *     must all redeclare the built-in block in the same way, as described
+    *     in section 4.3.7 "Interface Blocks" for interface block matching, or
+    *     a link error will result.
+    *
+    * The phrase "using members of a built-in block" implies that if two
+    * shaders are linked together and one of them *does not use* any members
+    * of the built-in block, then that shader does not need to have a matching
+    * redeclaration of the built-in block.
+    *
+    * This appears to be a clarification to the behaviour established for
+    * gl_PerVertex by GLSL 1.50, therefore implement it regardless of GLSL
+    * version.
+    *
+    * The definition of "interface" in section 4.3.7 that applies here is as
+    * follows:
+    *
+    *     The boundary between adjacent programmable pipeline stages: This
+    *     spans all the outputs in all compilation units of the first stage
+    *     and all the inputs in all compilation units of the second stage.
+    *
+    * Therefore this rule applies to both inter- and intra-stage linking.
+    *
+    * The easiest way to implement this is to check whether the shader uses
+    * gl_PerVertex right after ast-to-ir conversion, and if it doesn't, simply
+    * remove all the relevant variable declaration from the IR, so that the
+    * linker won't see them and complain about mismatches.
+    */
+   remove_per_vertex_blocks(instructions, state, ir_var_shader_in);
+   remove_per_vertex_blocks(instructions, state, ir_var_shader_out);
 }
 
 
@@ -1961,6 +1999,45 @@ validate_binding_qualifier(struct _mesa_glsl_parse_state *state,
    return true;
 }
 
+
+static glsl_interp_qualifier
+interpret_interpolation_qualifier(const struct ast_type_qualifier *qual,
+                                  ir_variable_mode mode,
+                                  struct _mesa_glsl_parse_state *state,
+                                  YYLTYPE *loc)
+{
+   glsl_interp_qualifier interpolation;
+   if (qual->flags.q.flat)
+      interpolation = INTERP_QUALIFIER_FLAT;
+   else if (qual->flags.q.noperspective)
+      interpolation = INTERP_QUALIFIER_NOPERSPECTIVE;
+   else if (qual->flags.q.smooth)
+      interpolation = INTERP_QUALIFIER_SMOOTH;
+   else
+      interpolation = INTERP_QUALIFIER_NONE;
+
+   if (interpolation != INTERP_QUALIFIER_NONE) {
+      if (mode != ir_var_shader_in && mode != ir_var_shader_out) {
+         _mesa_glsl_error(loc, state,
+                          "interpolation qualifier `%s' can only be applied to "
+                          "shader inputs or outputs.",
+                          interpolation_string(interpolation));
+
+      }
+
+      if ((state->target == vertex_shader && mode == ir_var_shader_in) ||
+          (state->target == fragment_shader && mode == ir_var_shader_out)) {
+         _mesa_glsl_error(loc, state,
+                          "interpolation qualifier `%s' cannot be applied to "
+                          "vertex shader inputs or fragment shader outputs",
+                          interpolation_string(interpolation));
+      }
+   }
+
+   return interpolation;
+}
+
+
 static void
 apply_type_qualifier_to_variable(const struct ast_type_qualifier *qual,
 				 ir_variable *var,
@@ -2095,34 +2172,9 @@ apply_type_qualifier_to_variable(const struct ast_type_qualifier *qual,
       }
    }
 
-   if (qual->flags.q.flat)
-      var->interpolation = INTERP_QUALIFIER_FLAT;
-   else if (qual->flags.q.noperspective)
-      var->interpolation = INTERP_QUALIFIER_NOPERSPECTIVE;
-   else if (qual->flags.q.smooth)
-      var->interpolation = INTERP_QUALIFIER_SMOOTH;
-   else
-      var->interpolation = INTERP_QUALIFIER_NONE;
-
-   if (var->interpolation != INTERP_QUALIFIER_NONE) {
-      ir_variable_mode mode = (ir_variable_mode) var->mode;
-
-      if (mode != ir_var_shader_in && mode != ir_var_shader_out) {
-         _mesa_glsl_error(loc, state,
-                          "interpolation qualifier `%s' can only be applied to "
-                          "shader inputs or outputs.",
-                          var->interpolation_string());
-
-      }
-
-      if ((state->target == vertex_shader && mode == ir_var_shader_in) ||
-          (state->target == fragment_shader && mode == ir_var_shader_out)) {
-         _mesa_glsl_error(loc, state,
-                          "interpolation qualifier `%s' cannot be applied to "
-                          "vertex shader inputs or fragment shader outputs",
-                          var->interpolation_string());
-      }
-   }
+   var->interpolation =
+      interpret_interpolation_qualifier(qual, (ir_variable_mode) var->mode,
+                                        state, loc);
 
    var->pixel_center_integer = qual->flags.q.pixel_center_integer;
    var->origin_upper_left = qual->flags.q.origin_upper_left;
@@ -4410,6 +4462,10 @@ ast_type_specifier::hir(exec_list *instructions,
  * AST for each can be processed the same way into a set of
  * \c glsl_struct_field to describe the members.
  *
+ * If we're processing an interface block, var_mode should be the type of the
+ * interface block (ir_var_shader_in, ir_var_shader_out, or ir_var_uniform).
+ * If we're processing a structure, var_mode should be ir_var_auto.
+ *
  * \return
  * The number of fields processed.  A pointer to the array structure fields is
  * stored in \c *fields_ret.
@@ -4422,7 +4478,8 @@ ast_process_structure_or_interface_block(exec_list *instructions,
 					 glsl_struct_field **fields_ret,
                                          bool is_interface,
                                          bool block_row_major,
-                                         bool allow_reserved_names)
+                                         bool allow_reserved_names,
+                                         ir_variable_mode var_mode)
 {
    unsigned decl_count = 0;
 
@@ -4506,6 +4563,9 @@ ast_process_structure_or_interface_block(exec_list *instructions,
          fields[i].type = field_type;
 	 fields[i].name = decl->identifier;
          fields[i].location = -1;
+         fields[i].interpolation =
+            interpret_interpolation_qualifier(qual, var_mode, state, &loc);
+         fields[i].centroid = qual->flags.q.centroid ? 1 : 0;
 
          if (qual->flags.q.row_major || qual->flags.q.column_major) {
             if (!qual->flags.q.uniform) {
@@ -4584,7 +4644,8 @@ ast_struct_specifier::hir(exec_list *instructions,
 					       &fields,
                                                false,
                                                false,
-                                               false /* allow_reserved_names */);
+                                               false /* allow_reserved_names */,
+                                               ir_var_auto);
 
    validate_identifier(this->name, loc, state);
 
@@ -4665,20 +4726,6 @@ ast_interface_block::hir(exec_list *instructions,
       packing = GLSL_INTERFACE_PACKING_STD140;
    }
 
-   bool redeclaring_per_vertex = strcmp(this->block_name, "gl_PerVertex") == 0;
-   bool block_row_major = this->layout.flags.q.row_major;
-   exec_list declared_variables;
-   glsl_struct_field *fields;
-   unsigned int num_variables =
-      ast_process_structure_or_interface_block(&declared_variables,
-                                               state,
-                                               &this->declarations,
-                                               loc,
-                                               &fields,
-                                               true,
-                                               block_row_major,
-                                               redeclaring_per_vertex);
-
    ir_variable_mode var_mode;
    const char *iface_type_name;
    if (this->layout.flags.q.in) {
@@ -4696,6 +4743,21 @@ ast_interface_block::hir(exec_list *instructions,
       assert(!"interface block layout qualifier not found!");
    }
 
+   bool redeclaring_per_vertex = strcmp(this->block_name, "gl_PerVertex") == 0;
+   bool block_row_major = this->layout.flags.q.row_major;
+   exec_list declared_variables;
+   glsl_struct_field *fields;
+   unsigned int num_variables =
+      ast_process_structure_or_interface_block(&declared_variables,
+                                               state,
+                                               &this->declarations,
+                                               loc,
+                                               &fields,
+                                               true,
+                                               block_row_major,
+                                               redeclaring_per_vertex,
+                                               var_mode);
+
    if (!redeclaring_per_vertex)
       validate_identifier(this->block_name, loc, state);
 
@@ -4768,6 +4830,10 @@ ast_interface_block::hir(exec_list *instructions,
          } else {
             fields[i].location =
                earlier_per_vertex->fields.structure[j].location;
+            fields[i].interpolation =
+               earlier_per_vertex->fields.structure[j].interpolation;
+            fields[i].centroid =
+               earlier_per_vertex->fields.structure[j].centroid;
          }
       }
 
@@ -4831,8 +4897,24 @@ ast_interface_block::hir(exec_list *instructions,
     *     field selector ( . ) operator (analogously to structures)."
     */
    if (this->instance_name) {
-      if (!redeclaring_per_vertex)
+      if (redeclaring_per_vertex) {
+         /* When a built-in in an unnamed interface block is redeclared,
+          * get_variable_being_redeclared() calls
+          * check_builtin_array_max_size() to make sure that built-in array
+          * variables aren't redeclared to illegal sizes.  But we're looking
+          * at a redeclaration of a named built-in interface block.  So we
+          * have to manually call check_builtin_array_max_size() for all parts
+          * of the interface that are arrays.
+          */
+         for (unsigned i = 0; i < num_variables; i++) {
+            if (fields[i].type->is_array()) {
+               const unsigned size = fields[i].type->array_size();
+               check_builtin_array_max_size(fields[i].name, size, loc, state);
+            }
+         }
+      } else {
          validate_identifier(this->instance_name, loc, state);
+      }
 
       ir_variable *var;
 
@@ -4903,6 +4985,8 @@ ast_interface_block::hir(exec_list *instructions,
             new(state) ir_variable(fields[i].type,
                                    ralloc_strdup(state, fields[i].name),
                                    var_mode);
+         var->interpolation = fields[i].interpolation;
+         var->centroid = fields[i].centroid;
          var->init_interface_type(block_type);
 
          if (redeclaring_per_vertex) {
@@ -4958,7 +5042,8 @@ ast_interface_block::hir(exec_list *instructions,
          foreach_list_safe(node, instructions) {
             ir_variable *const var = ((ir_instruction *) node)->as_variable();
             if (var != NULL &&
-                var->get_interface_type() == earlier_per_vertex) {
+                var->get_interface_type() == earlier_per_vertex &&
+                var->mode == var_mode) {
                state->symbols->disable_variable(var->name);
                var->remove();
             }
@@ -5095,3 +5180,55 @@ detect_conflicting_assignments(struct _mesa_glsl_parse_state *state,
 		       user_defined_fs_output->name);
    }
 }
+
+
+static void
+remove_per_vertex_blocks(exec_list *instructions,
+                         _mesa_glsl_parse_state *state, ir_variable_mode mode)
+{
+   /* Find the gl_PerVertex interface block of the appropriate (in/out) mode,
+    * if it exists in this shader type.
+    */
+   const glsl_type *per_vertex = NULL;
+   switch (mode) {
+   case ir_var_shader_in:
+      if (ir_variable *gl_in = state->symbols->get_variable("gl_in"))
+         per_vertex = gl_in->get_interface_type();
+      break;
+   case ir_var_shader_out:
+      if (ir_variable *gl_Position =
+          state->symbols->get_variable("gl_Position")) {
+         per_vertex = gl_Position->get_interface_type();
+      }
+      break;
+   default:
+      assert(!"Unexpected mode");
+      break;
+   }
+
+   /* If we didn't find a built-in gl_PerVertex interface block, then we don't
+    * need to do anything.
+    */
+   if (per_vertex == NULL)
+      return;
+
+   /* If the interface block is used by the shader, then we don't need to do
+    * anything.
+    */
+   interface_block_usage_visitor v(mode, per_vertex);
+   v.run(instructions);
+   if (v.usage_found())
+      return;
+
+   /* Remove any ir_variable declarations that refer to the interface block
+    * we're removing.
+    */
+   foreach_list_safe(node, instructions) {
+      ir_variable *const var = ((ir_instruction *) node)->as_variable();
+      if (var != NULL && var->get_interface_type() == per_vertex &&
+          var->mode == mode) {
+         state->symbols->disable_variable(var->name);
+         var->remove();
+      }
+   }
+}
diff --git a/mesalib/src/glsl/builtin_variables.cpp b/mesalib/src/glsl/builtin_variables.cpp
index fc1115bc4..018daf67f 100644
--- a/mesalib/src/glsl/builtin_variables.cpp
+++ b/mesalib/src/glsl/builtin_variables.cpp
@@ -326,6 +326,8 @@ per_vertex_accumulator::add_field(int slot, const glsl_type *type,
    this->fields[this->num_fields].name = name;
    this->fields[this->num_fields].row_major = false;
    this->fields[this->num_fields].location = slot;
+   this->fields[this->num_fields].interpolation = INTERP_QUALIFIER_NONE;
+   this->fields[this->num_fields].centroid = 0;
    this->num_fields++;
 }
 
@@ -888,8 +890,8 @@ builtin_variable_generator::generate_varyings()
    if (state->target == geometry_shader) {
       const glsl_type *per_vertex_in_type =
          this->per_vertex_in.construct_interface_instance();
-      ir_variable *var = add_variable("gl_in", array(per_vertex_in_type, 0),
-                                      ir_var_shader_in, -1);
+      add_variable("gl_in", array(per_vertex_in_type, 0),
+                   ir_var_shader_in, -1);
    }
    if (state->target == vertex_shader || state->target == geometry_shader) {
       const glsl_type *per_vertex_out_type =
@@ -899,6 +901,8 @@ builtin_variable_generator::generate_varyings()
          ir_variable *var =
             add_variable(fields[i].name, fields[i].type, ir_var_shader_out,
                          fields[i].location);
+         var->interpolation = fields[i].interpolation;
+         var->centroid = fields[i].centroid;
          var->init_interface_type(per_vertex_out_type);
       }
    }
diff --git a/mesalib/src/glsl/glsl_types.cpp b/mesalib/src/glsl/glsl_types.cpp
index 80a6e71a7..bc8d87f5f 100644
--- a/mesalib/src/glsl/glsl_types.cpp
+++ b/mesalib/src/glsl/glsl_types.cpp
@@ -101,6 +101,8 @@ glsl_type::glsl_type(const glsl_struct_field *fields, unsigned num_fields,
       this->fields.structure[i].name = ralloc_strdup(this->fields.structure,
 						     fields[i].name);
       this->fields.structure[i].location = fields[i].location;
+      this->fields.structure[i].interpolation = fields[i].interpolation;
+      this->fields.structure[i].centroid = fields[i].centroid;
       this->fields.structure[i].row_major = fields[i].row_major;
    }
 }
@@ -126,6 +128,8 @@ glsl_type::glsl_type(const glsl_struct_field *fields, unsigned num_fields,
       this->fields.structure[i].name = ralloc_strdup(this->fields.structure,
 						     fields[i].name);
       this->fields.structure[i].location = fields[i].location;
+      this->fields.structure[i].interpolation = fields[i].interpolation;
+      this->fields.structure[i].centroid = fields[i].centroid;
       this->fields.structure[i].row_major = fields[i].row_major;
    }
 }
@@ -455,6 +459,12 @@ glsl_type::record_key_compare(const void *a, const void *b)
       if (key1->fields.structure[i].location
           != key2->fields.structure[i].location)
          return 1;
+      if (key1->fields.structure[i].interpolation
+          != key2->fields.structure[i].interpolation)
+         return 1;
+      if (key1->fields.structure[i].centroid
+          != key2->fields.structure[i].centroid)
+         return 1;
    }
 
    return 0;
diff --git a/mesalib/src/glsl/glsl_types.h b/mesalib/src/glsl/glsl_types.h
index e60c19132..4b5b6efb3 100644
--- a/mesalib/src/glsl/glsl_types.h
+++ b/mesalib/src/glsl/glsl_types.h
@@ -590,6 +590,18 @@ struct glsl_struct_field {
     * Ignored for structs.
     */
    int location;
+
+   /**
+    * For interface blocks, the interpolation mode (as in
+    * ir_variable::interpolation).  0 otherwise.
+    */
+   unsigned interpolation:2;
+
+   /**
+    * For interface blocks, 1 if this variable uses centroid interpolation (as
+    * in ir_variable::centroid).  0 otherwise.
+    */
+   unsigned centroid:1;
 };
 
 static inline unsigned int
diff --git a/mesalib/src/glsl/ir.cpp b/mesalib/src/glsl/ir.cpp
index 54a8e400c..c682e3ed5 100644
--- a/mesalib/src/glsl/ir.cpp
+++ b/mesalib/src/glsl/ir.cpp
@@ -1616,9 +1616,9 @@ ir_variable::ir_variable(const struct glsl_type *type, const char *name,
 
 
 const char *
-ir_variable::interpolation_string() const
+interpolation_string(unsigned interpolation)
 {
-   switch (this->interpolation) {
+   switch (interpolation) {
    case INTERP_QUALIFIER_NONE:          return "no";
    case INTERP_QUALIFIER_SMOOTH:        return "smooth";
    case INTERP_QUALIFIER_FLAT:          return "flat";
diff --git a/mesalib/src/glsl/ir.h b/mesalib/src/glsl/ir.h
index aac8cbb7d..8d5bec9c1 100644
--- a/mesalib/src/glsl/ir.h
+++ b/mesalib/src/glsl/ir.h
@@ -312,6 +312,22 @@ struct ir_state_slot {
    int swizzle;
 };
 
+
+/**
+ * Get the string value for an interpolation qualifier
+ *
+ * \return The string that would be used in a shader to specify \c
+ * mode will be returned.
+ *
+ * This function is used to generate error messages of the form "shader
+ * uses %s interpolation qualifier", so in the case where there is no
+ * interpolation qualifier, it returns "no".
+ *
+ * This function should only be used on a shader input or output variable.
+ */
+const char *interpolation_string(unsigned interpolation);
+
+
 class ir_variable : public ir_instruction {
 public:
    ir_variable(const struct glsl_type *, const char *, ir_variable_mode);
@@ -332,20 +348,6 @@ public:
 
 
    /**
-    * Get the string value for the interpolation qualifier
-    *
-    * \return The string that would be used in a shader to specify \c
-    * mode will be returned.
-    *
-    * This function is used to generate error messages of the form "shader
-    * uses %s interpolation qualifier", so in the case where there is no
-    * interpolation qualifier, it returns "no".
-    *
-    * This function should only be used on a shader input or output variable.
-    */
-   const char *interpolation_string() const;
-
-   /**
     * Determine how this variable should be interpolated based on its
     * interpolation qualifier (if present), whether it is gl_Color or
     * gl_SecondaryColor, and whether flatshading is enabled in the current GL
@@ -579,6 +581,24 @@ public:
    unsigned location_frac:2;
 
    /**
+    * Non-zero if this variable was created by lowering a named interface
+    * block which was not an array.
+    *
+    * Note that this variable and \c from_named_ifc_block_array will never
+    * both be non-zero.
+    */
+   unsigned from_named_ifc_block_nonarray:1;
+
+   /**
+    * Non-zero if this variable was created by lowering a named interface
+    * block which was an array.
+    *
+    * Note that this variable and \c from_named_ifc_block_nonarray will never
+    * both be non-zero.
+    */
+   unsigned from_named_ifc_block_array:1;
+
+   /**
     * \brief Layout qualifier for gl_FragDepth.
     *
     * This is not equal to \c ir_depth_layout_none if and only if this
diff --git a/mesalib/src/glsl/link_uniforms.cpp b/mesalib/src/glsl/link_uniforms.cpp
index 4bd4034a0..ea71b3063 100644
--- a/mesalib/src/glsl/link_uniforms.cpp
+++ b/mesalib/src/glsl/link_uniforms.cpp
@@ -75,7 +75,63 @@ program_resource_visitor::process(ir_variable *var)
     */
 
    /* Only strdup the name if we actually will need to modify it. */
-   if (t->is_record() || (t->is_array() && t->fields.array->is_record())) {
+   if (var->from_named_ifc_block_array) {
+      /* lower_named_interface_blocks created this variable by lowering an
+       * interface block array to an array variable.  For example if the
+       * original source code was:
+       *
+       *     out Blk { vec4 bar } foo[3];
+       *
+       * Then the variable is now:
+       *
+       *     out vec4 bar[3];
+       *
+       * We need to visit each array element using the names constructed like
+       * so:
+       *
+       *     Blk[0].bar
+       *     Blk[1].bar
+       *     Blk[2].bar
+       */
+      assert(t->is_array());
+      const glsl_type *ifc_type = var->get_interface_type();
+      char *name = ralloc_strdup(NULL, ifc_type->name);
+      size_t name_length = strlen(name);
+      for (unsigned i = 0; i < t->length; i++) {
+         size_t new_length = name_length;
+         ralloc_asprintf_rewrite_tail(&name, &new_length, "[%u].%s", i,
+                                      var->name);
+         /* Note: row_major is only meaningful for uniform blocks, and
+          * lowering is only applied to non-uniform interface blocks, so we
+          * can safely pass false for row_major.
+          */
+         recursion(var->type, &name, new_length, false, NULL);
+      }
+      ralloc_free(name);
+   } else if (var->from_named_ifc_block_nonarray) {
+      /* lower_named_interface_blocks created this variable by lowering a
+       * named interface block (non-array) to an ordinary variable.  For
+       * example if the original source code was:
+       *
+       *     out Blk { vec4 bar } foo;
+       *
+       * Then the variable is now:
+       *
+       *     out vec4 bar;
+       *
+       * We need to visit this variable using the name:
+       *
+       *     Blk.bar
+       */
+      const glsl_type *ifc_type = var->get_interface_type();
+      char *name = ralloc_asprintf(NULL, "%s.%s", ifc_type->name, var->name);
+      /* Note: row_major is only meaningful for uniform blocks, and lowering
+       * is only applied to non-uniform interface blocks, so we can safely
+       * pass false for row_major.
+       */
+      recursion(var->type, &name, strlen(name), false, NULL);
+      ralloc_free(name);
+   } else if (t->is_record() || (t->is_array() && t->fields.array->is_record())) {
       char *name = ralloc_strdup(NULL, var->name);
       recursion(var->type, &name, strlen(name), false, NULL);
       ralloc_free(name);
diff --git a/mesalib/src/glsl/link_varyings.cpp b/mesalib/src/glsl/link_varyings.cpp
index 4ba6d8a20..be36b5f8f 100644
--- a/mesalib/src/glsl/link_varyings.cpp
+++ b/mesalib/src/glsl/link_varyings.cpp
@@ -125,9 +125,9 @@ cross_validate_types_and_qualifiers(struct gl_shader_program *prog,
                    "interpolation qualifier\n",
                    _mesa_glsl_shader_target_name(producer_type),
                    output->name,
-                   output->interpolation_string(),
+                   interpolation_string(output->interpolation),
                    _mesa_glsl_shader_target_name(consumer_type),
-                   input->interpolation_string());
+                   interpolation_string(input->interpolation));
       return;
    }
 }
@@ -328,7 +328,7 @@ tfeedback_decl::assign_location(struct gl_context *ctx,
       const unsigned vector_elements =
          this->matched_candidate->type->fields.array->vector_elements;
       unsigned actual_array_size = this->is_clip_distance_mesa ?
-         prog->Vert.ClipDistanceArraySize :
+         prog->LastClipDistanceArraySize :
          this->matched_candidate->type->array_size();
 
       if (this->is_subscripted) {
diff --git a/mesalib/src/glsl/linker.cpp b/mesalib/src/glsl/linker.cpp
index b23c31a16..d8f655c39 100644
--- a/mesalib/src/glsl/linker.cpp
+++ b/mesalib/src/glsl/linker.cpp
@@ -2100,6 +2100,7 @@ link_shaders(struct gl_context *ctx, struct gl_shader_program *prog)
       validate_vertex_shader_executable(prog, sh);
       if (!prog->LinkStatus)
 	 goto done;
+      prog->LastClipDistanceArraySize = prog->Vert.ClipDistanceArraySize;
 
       _mesa_reference_shader(ctx, &prog->_LinkedShaders[MESA_SHADER_VERTEX],
 			     sh);
@@ -2132,6 +2133,7 @@ link_shaders(struct gl_context *ctx, struct gl_shader_program *prog)
       validate_geometry_shader_executable(prog, sh);
       if (!prog->LinkStatus)
 	 goto done;
+      prog->LastClipDistanceArraySize = prog->Geom.ClipDistanceArraySize;
 
       _mesa_reference_shader(ctx, &prog->_LinkedShaders[MESA_SHADER_GEOMETRY],
 			     sh);
diff --git a/mesalib/src/glsl/lower_named_interface_blocks.cpp b/mesalib/src/glsl/lower_named_interface_blocks.cpp
index f415252ba..d59d11150 100644
--- a/mesalib/src/glsl/lower_named_interface_blocks.cpp
+++ b/mesalib/src/glsl/lower_named_interface_blocks.cpp
@@ -140,6 +140,7 @@ flatten_named_interface_blocks_declarations::run(exec_list *instructions)
                   new(mem_ctx) ir_variable(iface_t->fields.structure[i].type,
                                            var_name,
                                            (ir_variable_mode) var->mode);
+               new_var->from_named_ifc_block_nonarray = 1;
             } else {
                const glsl_type *new_array_type =
                   glsl_type::get_array_instance(
@@ -149,8 +150,13 @@ flatten_named_interface_blocks_declarations::run(exec_list *instructions)
                   new(mem_ctx) ir_variable(new_array_type,
                                            var_name,
                                            (ir_variable_mode) var->mode);
+               new_var->from_named_ifc_block_array = 1;
             }
             new_var->location = iface_t->fields.structure[i].location;
+            new_var->explicit_location = (new_var->location >= 0);
+            new_var->interpolation =
+               iface_t->fields.structure[i].interpolation;
+            new_var->centroid = iface_t->fields.structure[i].centroid;
 
             new_var->init_interface_type(iface_t);
             hash_table_insert(interface_namespace, new_var,
diff --git a/mesalib/src/mesa/Makefile.am b/mesalib/src/mesa/Makefile.am
index e9c16e78e..f86caee35 100644
--- a/mesalib/src/mesa/Makefile.am
+++ b/mesalib/src/mesa/Makefile.am
@@ -19,11 +19,7 @@
 # FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 # IN THE SOFTWARE.
 
-if NEED_LIBDRICORE
-DRICORE_SUBDIR = libdricore
-endif
-
-SUBDIRS = program x86 x86-64 . $(DRICORE_SUBDIR) main/tests
+SUBDIRS = program x86 x86-64 . main/tests
 
 if HAVE_X11_DRIVER
 SUBDIRS += drivers/x11
diff --git a/mesalib/src/mesa/drivers/dri/Makefile.am b/mesalib/src/mesa/drivers/dri/Makefile.am
index 7fa0ad73d..a85a5aa91 100644
--- a/mesalib/src/mesa/drivers/dri/Makefile.am
+++ b/mesalib/src/mesa/drivers/dri/Makefile.am
@@ -1,29 +1,45 @@
+dridir = $(DRI_DRIVER_INSTALL_DIR)
+
 SUBDIRS =
+MEGADRIVERS =
+MEGADRIVERS_DEPS =
 
 SUBDIRS+=common
 
 if HAVE_I915_DRI
-SUBDIRS+=i915
+SUBDIRS += i915
+MEGADRIVERS_DEPS += i915/libi915_dri.la
+MEGADRIVERS += i915_dri.so
 endif
 
 if HAVE_I965_DRI
-SUBDIRS+=i965
+SUBDIRS += i965
+MEGADRIVERS_DEPS += i965/libi965_dri.la
+MEGADRIVERS += i965_dri.so
 endif
 
 if HAVE_NOUVEAU_DRI
-SUBDIRS+=nouveau
+SUBDIRS += nouveau
+MEGADRIVERS_DEPS += nouveau/libnouveau_dri.la
+MEGADRIVERS += nouveau_vieux_dri.so
 endif
 
 if HAVE_R200_DRI
-SUBDIRS+=r200
+SUBDIRS += r200
+MEGADRIVERS_DEPS += r200/libr200_dri.la
+MEGADRIVERS += r200_dri.so
 endif
 
 if HAVE_RADEON_DRI
-SUBDIRS+=radeon
+SUBDIRS += radeon
+MEGADRIVERS_DEPS += radeon/libradeon_dri.la
+MEGADRIVERS += radeon_dri.so
 endif
 
 if HAVE_SWRAST_DRI
-SUBDIRS+=swrast
+SUBDIRS += swrast
+MEGADRIVERS_DEPS += swrast/libswrast_dri.la
+MEGADRIVERS += swrast_dri.so
 endif
 
 pkgconfigdir = $(libdir)/pkgconfig
@@ -31,3 +47,42 @@ pkgconfig_DATA = dri.pc
 
 driincludedir = $(includedir)/GL/internal
 driinclude_HEADERS = $(top_srcdir)/include/GL/internal/dri_interface.h
+
+nodist_EXTRA_mesa_dri_drivers_la_SOURCES = dummy.cpp
+mesa_dri_drivers_la_SOURCES =
+mesa_dri_drivers_la_LDFLAGS = \
+        -module -avoid-version -shared \
+        -Wl,-Bsymbolic \
+        $()
+mesa_dri_drivers_la_LIBADD = \
+        ../../libmesa.la \
+        common/libmegadriver_stub.la \
+        common/libdricommon.la \
+        $(MEGADRIVERS_DEPS) \
+        $(DRI_LIB_DEPS) \
+        $()
+
+if NEED_MEGADRIVER
+dri_LTLIBRARIES = mesa_dri_drivers.la
+
+# Add a link to allow setting LD_LIBRARY_PATH/LIBGL_DRIVERS_PATH to /lib of the build tree.
+all-local: mesa_dri_drivers.la
+	$(MKDIR_P) $(top_builddir)/$(LIB_DIR);
+	$(AM_V_GEN)ln -f .libs/mesa_dri_drivers.so \
+			 $(top_builddir)/$(LIB_DIR)/mesa_dri_drivers.so;
+	$(AM_V_GEN)for i in $(MEGADRIVERS); do \
+		ln -f $(top_builddir)/$(LIB_DIR)/mesa_dri_drivers.so \
+		      $(top_builddir)/$(LIB_DIR)/$$i; \
+	done;
+
+# hardlink each megadriver instance, but don't actually have
+# mesa_dri_drivers.so in the set of final installed files.
+install-data-hook:
+	for i in $(MEGADRIVERS); do \
+		ln -f $(DESTDIR)$(dridir)/mesa_dri_drivers.so \
+		      $(DESTDIR)$(dridir)/$$i; \
+	done;
+	$(RM) -f $(DESTDIR)$(dridir)/mesa_dri_drivers.so
+	$(RM) -f $(DESTDIR)$(dridir)/mesa_dri_drivers.la
+
+endif
diff --git a/mesalib/src/mesa/drivers/dri/common/Makefile.am b/mesalib/src/mesa/drivers/dri/common/Makefile.am
index ce4119d0f..9f49ff3ae 100644
--- a/mesalib/src/mesa/drivers/dri/common/Makefile.am
+++ b/mesalib/src/mesa/drivers/dri/common/Makefile.am
@@ -27,11 +27,11 @@ AM_CFLAGS = \
 	-I$(top_srcdir)/src/mapi \
 	-I$(top_srcdir)/src/mesa/ \
 	$(DEFINES) \
-	$(LIBDRM_CFLAGS) \
 	$(VISIBILITY_CFLAGS)
 
 noinst_LTLIBRARIES = \
 	libdricommon.la \
+	libmegadriver_stub.la \
 	libdri_test_stubs.la
 
 libdricommon_la_SOURCES = \
@@ -43,4 +43,13 @@ libdri_test_stubs_la_SOURCES = \
 	dri_test.c
 libdri_test_stubs_la_CFLAGS = $(AM_CFLAGS) -DNO_MAIN
 
+libmegadriver_stub_la_SOURCES = megadriver_stub.c
+
 sysconf_DATA = drirc
+
+if DRICOMMON_NEED_LIBDRM
+AM_CFLAGS += $(LIBDRM_CFLAGS)
+libdricommon_la_LDFLAGS = $(LIBDRM_LIBS)
+else
+AM_CFLAGS += -D__NOT_HAVE_DRM_H
+endif
diff --git a/mesalib/src/mesa/drivers/dri/common/dri_util.c b/mesalib/src/mesa/drivers/dri/common/dri_util.c
index db44eede6..c28b0fc41 100644
--- a/mesalib/src/mesa/drivers/dri/common/dri_util.c
+++ b/mesalib/src/mesa/drivers/dri/common/dri_util.c
@@ -82,6 +82,23 @@ setupLoaderExtensions(__DRIscreen *psp,
 }
 
 /**
+ * This pointer determines which driver API we'll use in the case of the
+ * loader not passing us an explicit driver extensions list (that would,
+ * itself, contain a pointer to a driver API.)
+ *
+ * A driver's driDriverGetExtensions_drivername() can update this pointer to
+ * what it's returning, and a loader that is ignorant of createNewScreen2()
+ * will get the correct driver screen created, as long as no other
+ * driDriverGetExtensions() happened in between the first one and the
+ * createNewScreen().
+ *
+ * This allows the X Server to not require the significant dri_interface.h
+ * updates for doing createNewScreen2(), which would discourage backporting of
+ * the X Server patches to support the new loader interface.
+ */
+const struct __DriverAPIRec *globalDriverAPI = &driDriverAPI;
+
+/**
  * This is the first entrypoint in the driver called by the DRI driver loader
  * after dlopen()ing it.
  *
@@ -89,9 +106,10 @@ setupLoaderExtensions(__DRIscreen *psp,
  * Display.
  */
 static __DRIscreen *
-dri2CreateNewScreen(int scrn, int fd,
-		    const __DRIextension **extensions,
-		    const __DRIconfig ***driver_configs, void *data)
+dri2CreateNewScreen2(int scrn, int fd,
+                     const __DRIextension **extensions,
+                     const __DRIextension **driver_extensions,
+                     const __DRIconfig ***driver_configs, void *data)
 {
     static const __DRIextension *emptyExtensionList[] = { NULL };
     __DRIscreen *psp;
@@ -100,7 +118,20 @@ dri2CreateNewScreen(int scrn, int fd,
     if (!psp)
 	return NULL;
 
-    psp->driver = &driDriverAPI;
+    /* By default, use the global driDriverAPI symbol (non-megadrivers). */
+    psp->driver = globalDriverAPI;
+
+    /* If the driver exposes its vtable through its extensions list
+     * (megadrivers), use that instead.
+     */
+    if (driver_extensions) {
+       for (int i = 0; driver_extensions[i]; i++) {
+          if (strcmp(driver_extensions[i]->name, __DRI_DRIVER_VTABLE) == 0) {
+             psp->driver =
+                ((__DRIDriverVtableExtension *)driver_extensions[i])->vtable;
+          }
+       }
+    }
 
     setupLoaderExtensions(psp, extensions);
 
@@ -154,12 +185,31 @@ dri2CreateNewScreen(int scrn, int fd,
     return psp;
 }
 
+static __DRIscreen *
+dri2CreateNewScreen(int scrn, int fd,
+		    const __DRIextension **extensions,
+		    const __DRIconfig ***driver_configs, void *data)
+{
+   return dri2CreateNewScreen2(scrn, fd, extensions, NULL,
+                               driver_configs, data);
+}
+
 /** swrast driver createNewScreen entrypoint. */
 static __DRIscreen *
-driCreateNewScreen(int scrn, const __DRIextension **extensions,
-		   const __DRIconfig ***driver_configs, void *data)
+driSWRastCreateNewScreen(int scrn, const __DRIextension **extensions,
+                         const __DRIconfig ***driver_configs, void *data)
+{
+   return dri2CreateNewScreen2(scrn, -1, extensions, NULL,
+                               driver_configs, data);
+}
+
+static __DRIscreen *
+driSWRastCreateNewScreen2(int scrn, const __DRIextension **extensions,
+                          const __DRIextension **driver_extensions,
+                          const __DRIconfig ***driver_configs, void *data)
 {
-   return dri2CreateNewScreen(scrn, -1, extensions, driver_configs, data);
+   return dri2CreateNewScreen2(scrn, -1, extensions, driver_extensions,
+                               driver_configs, data);
 }
 
 /**
@@ -688,7 +738,7 @@ const __DRIcoreExtension driCoreExtension = {
 
 /** DRI2 interface */
 const __DRIdri2Extension driDRI2Extension = {
-    .base = { __DRI_DRI2, 3 },
+    .base = { __DRI_DRI2, 4 },
 
     .createNewScreen            = dri2CreateNewScreen,
     .createNewDrawable          = dri2CreateNewDrawable,
@@ -697,15 +747,17 @@ const __DRIdri2Extension driDRI2Extension = {
     .createNewContextForAPI     = dri2CreateNewContextForAPI,
     .allocateBuffer             = dri2AllocateBuffer,
     .releaseBuffer              = dri2ReleaseBuffer,
-    .createContextAttribs       = dri2CreateContextAttribs
+    .createContextAttribs       = dri2CreateContextAttribs,
+    .createNewScreen2           = dri2CreateNewScreen2,
 };
 
 const __DRIswrastExtension driSWRastExtension = {
-    { __DRI_SWRAST, __DRI_SWRAST_VERSION },
-    driCreateNewScreen,
+    { __DRI_SWRAST, 4 },
+    driSWRastCreateNewScreen,
     dri2CreateNewDrawable,
     dri2CreateNewContextForAPI,
-    dri2CreateContextAttribs
+    dri2CreateContextAttribs,
+    driSWRastCreateNewScreen2,
 };
 
 const __DRI2configQueryExtension dri2ConfigQueryExtension = {
diff --git a/mesalib/src/mesa/drivers/dri/common/dri_util.h b/mesalib/src/mesa/drivers/dri/common/dri_util.h
index 61c80bc45..5b56061e2 100644
--- a/mesalib/src/mesa/drivers/dri/common/dri_util.h
+++ b/mesalib/src/mesa/drivers/dri/common/dri_util.h
@@ -116,7 +116,7 @@ struct __DriverAPIRec {
 };
 
 extern const struct __DriverAPIRec driDriverAPI;
-
+extern const struct __DriverAPIRec *globalDriverAPI;
 
 /**
  * Per-screen private driver information.
diff --git a/mesalib/src/mesa/drivers/dri/common/megadriver_stub.c b/mesalib/src/mesa/drivers/dri/common/megadriver_stub.c
new file mode 100644
index 000000000..6bf5d7327
--- /dev/null
+++ b/mesalib/src/mesa/drivers/dri/common/megadriver_stub.c
@@ -0,0 +1,41 @@
+/*
+ * Copyright © 2013 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include <stdio.h>
+#include "dri_util.h"
+
+static const
+__DRIconfig **stub_error_init_screen(__DRIscreen *psp)
+{
+   fprintf(stderr, "An updated DRI driver loader (libGL.so or X Server) is "
+           "required for this Mesa driver.\n");
+   return NULL;
+}
+
+/**
+ * This is a stub driDriverAPI that is referenced by dri_util.c but should
+ * never be used.
+ */
+const struct __DriverAPIRec driDriverAPI = {
+   .InitScreen = stub_error_init_screen,
+};
diff --git a/mesalib/src/mesa/drivers/dri/gen-symbol-redefs.py b/mesalib/src/mesa/drivers/dri/gen-symbol-redefs.py
new file mode 100644
index 000000000..ebe4aaa65
--- /dev/null
+++ b/mesalib/src/mesa/drivers/dri/gen-symbol-redefs.py
@@ -0,0 +1,68 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+# Copyright © 2013 Intel Corporation
+#
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the "Software"),
+# to deal in the Software without restriction, including without limitation
+# the rights to use, copy, modify, merge, publish, distribute, sublicense,
+# and/or sell copies of the Software, and to permit persons to whom the
+# Software is furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice (including the next
+# paragraph) shall be included in all copies or substantial portions of the
+# Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+# IN THE SOFTWARE.
+
+import sys
+import argparse
+import re
+import subprocess
+
+# Example usages:
+# ./gen-symbol-redefs.py i915/.libs/libi915_dri.a old_ i915 i830
+# ./gen-symbol-redefs.py r200/.libs/libr200_dri.a r200_ r200
+
+argparser = argparse.ArgumentParser(description="Generates #defines to hide driver global symbols outside of a driver's namespace.")
+argparser.add_argument("file",
+                    metavar = 'file',
+                    help='libdrivername.a file to read')
+argparser.add_argument("newprefix",
+                    metavar = 'newprefix',
+                    help='New prefix to give non-driver global symbols')
+argparser.add_argument('prefixes',
+                       metavar='prefix',
+                       nargs='*',
+                       help='driver-specific prefixes')
+args = argparser.parse_args()
+
+stdout = subprocess.check_output(['nm', args.file])
+
+for line in stdout.splitlines():
+    m = re.match("[0-9a-z]+ [BT] (.*)", line)
+    if not m:
+        continue
+
+    symbol = m.group(1)
+
+    has_good_prefix = re.match(args.newprefix, symbol) != None
+    for prefix in args.prefixes:
+        if re.match(prefix, symbol):
+            has_good_prefix = True
+            break
+    if has_good_prefix:
+        continue
+
+    # This is the single public entrypoint.
+    if re.match("__driDriverGetExtensions", symbol):
+        continue
+
+    print '#define {0:35} {1}{0}'.format(symbol, args.newprefix)
diff --git a/mesalib/src/mesa/drivers/dri/swrast/Makefile.am b/mesalib/src/mesa/drivers/dri/swrast/Makefile.am
index c51ad2d87..0837b4518 100644
--- a/mesalib/src/mesa/drivers/dri/swrast/Makefile.am
+++ b/mesalib/src/mesa/drivers/dri/swrast/Makefile.am
@@ -34,19 +34,5 @@ AM_CFLAGS = \
 	$(DEFINES) \
 	$(VISIBILITY_CFLAGS)
 
-dridir = $(DRI_DRIVER_INSTALL_DIR)
-dri_LTLIBRARIES = swrast_dri.la
-
-swrast_dri_la_SOURCES = \
-	$(SWRAST_C_FILES)
-
-swrast_dri_la_LDFLAGS = $(DRI_DRIVER_LDFLAGS)
-
-swrast_dri_la_LIBADD = \
-	$(DRI_LIB_DEPS)
-
-# Provide compatibility with scripts for the old Mesa build system for
-# a while by putting a link to the driver into /lib of the build tree.
-all-local: swrast_dri.la
-	$(MKDIR_P) $(top_builddir)/$(LIB_DIR);
-	ln -f .libs/swrast_dri.so $(top_builddir)/$(LIB_DIR)/swrast_dri.so;
+noinst_LTLIBRARIES = libswrast_dri.la
+libswrast_dri_la_SOURCES = $(SWRAST_C_FILES)
diff --git a/mesalib/src/mesa/drivers/dri/swrast/Makefile.sources b/mesalib/src/mesa/drivers/dri/swrast/Makefile.sources
index fc7ef32db..70e432feb 100644
--- a/mesalib/src/mesa/drivers/dri/swrast/Makefile.sources
+++ b/mesalib/src/mesa/drivers/dri/swrast/Makefile.sources
@@ -1,11 +1,5 @@
 SWRAST_DRIVER_FILES = \
 	swrast.c 
 
-SWRAST_COMMON_FILES = \
-	../common/utils.c \
-	../common/dri_util.c \
-	../common/xmlconfig.c
-
 SWRAST_C_FILES = \
-	$(SWRAST_COMMON_FILES) \
 	$(SWRAST_DRIVER_FILES)
diff --git a/mesalib/src/mesa/drivers/dri/swrast/swrast.c b/mesalib/src/mesa/drivers/dri/swrast/swrast.c
index 4725a7f42..bfa2efd21 100644
--- a/mesalib/src/mesa/drivers/dri/swrast/swrast.c
+++ b/mesalib/src/mesa/drivers/dri/swrast/swrast.c
@@ -59,6 +59,7 @@
 #include "swrast_priv.h"
 #include "swrast/s_context.h"
 
+const __DRIextension **__driDriverGetExtensions_swrast(void);
 
 /**
  * Screen and config-related functions
@@ -819,7 +820,7 @@ dri_unbind_context(__DRIcontext * cPriv)
 }
 
 
-const struct __DriverAPIRec driDriverAPI = {
+static const struct __DriverAPIRec swrast_driver_api = {
     .InitScreen = dri_init_screen,
     .DestroyScreen = dri_destroy_screen,
     .CreateContext = dri_create_context,
@@ -831,9 +832,21 @@ const struct __DriverAPIRec driDriverAPI = {
     .UnbindContext = dri_unbind_context,
 };
 
-/* This is the table of extensions that the loader will dlsym() for. */
-PUBLIC const __DRIextension *__driDriverExtensions[] = {
+static const struct __DRIDriverVtableExtensionRec swrast_vtable = {
+   .base = { __DRI_DRIVER_VTABLE, 1 },
+   .vtable = &swrast_driver_api,
+};
+
+static const __DRIextension *swrast_driver_extensions[] = {
     &driCoreExtension.base,
     &driSWRastExtension.base,
+    &swrast_vtable.base,
     NULL
 };
+
+PUBLIC const __DRIextension **__driDriverGetExtensions_swrast(void)
+{
+   globalDriverAPI = &swrast_driver_api;
+
+   return swrast_driver_extensions;
+}
diff --git a/mesalib/src/mesa/main/mtypes.h b/mesalib/src/mesa/main/mtypes.h
index 6374e8c0d..97ed1bd6a 100644
--- a/mesalib/src/mesa/main/mtypes.h
+++ b/mesalib/src/mesa/main/mtypes.h
@@ -1965,6 +1965,12 @@ struct gl_program
 
    GLboolean UsesGather; /**< Does this program use gather4 at all? */
 
+   /**
+    * For vertex and geometry shaders, true if the program uses the
+    * gl_ClipDistance output.  Ignored for fragment shaders.
+    */
+   GLboolean UsesClipDistanceOut;
+
 
    /** Named parameters, constants, etc. from program text */
    struct gl_program_parameter_list *Parameters;
@@ -2009,7 +2015,6 @@ struct gl_vertex_program
 {
    struct gl_program Base;   /**< base class */
    GLboolean IsPositionInvariant;
-   GLboolean UsesClipDistance;
 };
 
 
@@ -2023,7 +2028,6 @@ struct gl_geometry_program
    GLenum InputType;  /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
                            GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
    GLenum OutputType; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
-   GLboolean UsesClipDistance;
    GLboolean UsesEndPrimitive;
 };
 
@@ -2476,6 +2480,12 @@ struct gl_shader_program
    unsigned NumUserUniformStorage;
    struct gl_uniform_storage *UniformStorage;
 
+   /**
+    * Size of the gl_ClipDistance array that is output from the last pipeline
+    * stage before the fragment shader.
+    */
+   unsigned LastClipDistanceArraySize;
+
    struct gl_uniform_block *UniformBlocks;
    unsigned NumUniformBlocks;
 
diff --git a/mesalib/src/mesa/main/shaderapi.c b/mesalib/src/mesa/main/shaderapi.c
index d3677c851..f5c04b9f3 100644
--- a/mesalib/src/mesa/main/shaderapi.c
+++ b/mesalib/src/mesa/main/shaderapi.c
@@ -460,6 +460,31 @@ get_handle(struct gl_context *ctx, GLenum pname)
 
 
 /**
+ * Check if a geometry shader query is valid at this time.  If not, report an
+ * error and return false.
+ *
+ * From GL 3.2 section 6.1.16 (Shader and Program Queries):
+ *
+ *     "If GEOMETRY_VERTICES_OUT, GEOMETRY_INPUT_TYPE, or GEOMETRY_OUTPUT_TYPE
+ *     are queried for a program which has not been linked successfully, or
+ *     which does not contain objects to form a geometry shader, then an
+ *     INVALID_OPERATION error is generated."
+ */
+static bool
+check_gs_query(struct gl_context *ctx, const struct gl_shader_program *shProg)
+{
+   if (shProg->LinkStatus &&
+       shProg->_LinkedShaders[MESA_SHADER_GEOMETRY] != NULL) {
+      return true;
+   }
+
+   _mesa_error(ctx, GL_INVALID_OPERATION,
+               "glGetProgramv(linked geometry shader required)");
+   return false;
+}
+
+
+/**
  * glGetProgramiv() - get shader program state.
  * Note that this is for GLSL shader programs, not ARB vertex/fragment
  * programs (see glGetProgramivARB).
@@ -477,9 +502,10 @@ get_programiv(struct gl_context *ctx, GLuint program, GLenum pname, GLint *param
       || ctx->API == API_OPENGL_CORE
       || _mesa_is_gles3(ctx);
 
-   /* Are geometry shaders available in this context?
+   /* True if geometry shaders (of the form that was adopted into GLSL 1.50
+    * and GL 3.2) are available in this context
     */
-   const bool has_gs = _mesa_has_geometry_shaders(ctx);
+   const bool has_core_gs = _mesa_is_desktop_gl(ctx) && ctx->Version >= 32;
 
    /* Are uniform buffer objects available in this context?
     */
@@ -564,20 +590,23 @@ get_programiv(struct gl_context *ctx, GLuint program, GLenum pname, GLint *param
          break;
       *params = shProg->TransformFeedback.BufferMode;
       return;
-   case GL_GEOMETRY_VERTICES_OUT_ARB:
-      if (!has_gs)
+   case GL_GEOMETRY_VERTICES_OUT:
+      if (!has_core_gs)
          break;
-      *params = shProg->Geom.VerticesOut;
+      if (check_gs_query(ctx, shProg))
+         *params = shProg->Geom.VerticesOut;
       return;
-   case GL_GEOMETRY_INPUT_TYPE_ARB:
-      if (!has_gs)
+   case GL_GEOMETRY_INPUT_TYPE:
+      if (!has_core_gs)
          break;
-      *params = shProg->Geom.InputType;
+      if (check_gs_query(ctx, shProg))
+         *params = shProg->Geom.InputType;
       return;
-   case GL_GEOMETRY_OUTPUT_TYPE_ARB:
-      if (!has_gs)
+   case GL_GEOMETRY_OUTPUT_TYPE:
+      if (!has_core_gs)
          break;
-      *params = shProg->Geom.OutputType;
+      if (check_gs_query(ctx, shProg))
+         *params = shProg->Geom.OutputType;
       return;
    case GL_ACTIVE_UNIFORM_BLOCK_MAX_NAME_LENGTH: {
       unsigned i;
@@ -1631,55 +1660,6 @@ _mesa_ProgramParameteri(GLuint program, GLenum pname, GLint value)
       return;
 
    switch (pname) {
-   case GL_GEOMETRY_VERTICES_OUT_ARB:
-      if (!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_geometry_shader4)
-         break;
-
-      if (value < 0 ||
-          (unsigned) value > ctx->Const.MaxGeometryOutputVertices) {
-         _mesa_error(ctx, GL_INVALID_VALUE,
-                     "glProgramParameteri(GL_GEOMETRY_VERTICES_OUT_ARB=%d)",
-                     value);
-         return;
-      }
-      shProg->Geom.VerticesOut = value;
-      return;
-   case GL_GEOMETRY_INPUT_TYPE_ARB:
-      if (!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_geometry_shader4)
-         break;
-
-      switch (value) {
-      case GL_POINTS:
-      case GL_LINES:
-      case GL_LINES_ADJACENCY_ARB:
-      case GL_TRIANGLES:
-      case GL_TRIANGLES_ADJACENCY_ARB:
-         shProg->Geom.InputType = value;
-         break;
-      default:
-         _mesa_error(ctx, GL_INVALID_VALUE,
-                     "glProgramParameteri(geometry input type = %s)",
-                     _mesa_lookup_enum_by_nr(value));
-         return;
-      }
-      return;
-   case GL_GEOMETRY_OUTPUT_TYPE_ARB:
-      if (!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_geometry_shader4)
-         break;
-
-      switch (value) {
-      case GL_POINTS:
-      case GL_LINE_STRIP:
-      case GL_TRIANGLE_STRIP:
-         shProg->Geom.OutputType = value;
-         break;
-      default:
-         _mesa_error(ctx, GL_INVALID_VALUE,
-                     "glProgramParameteri(geometry output type = %s)",
-                     _mesa_lookup_enum_by_nr(value));
-         return;
-      }
-      return;
    case GL_PROGRAM_BINARY_RETRIEVABLE_HINT:
       /* This enum isn't part of the OES extension for OpenGL ES 2.0, but it
        * is part of OpenGL ES 3.0.  For the ES2 case, this function shouldn't
@@ -1855,10 +1835,8 @@ _mesa_copy_linked_program_data(gl_shader_type type,
                                struct gl_program *dst)
 {
    switch (type) {
-   case MESA_SHADER_VERTEX: {
-      struct gl_vertex_program *dst_vp = (struct gl_vertex_program *) dst;
-      dst_vp->UsesClipDistance = src->Vert.UsesClipDistance;
-   }
+   case MESA_SHADER_VERTEX:
+      dst->UsesClipDistanceOut = src->Vert.UsesClipDistance;
       break;
    case MESA_SHADER_GEOMETRY: {
       struct gl_geometry_program *dst_gp = (struct gl_geometry_program *) dst;
@@ -1866,7 +1844,7 @@ _mesa_copy_linked_program_data(gl_shader_type type,
       dst_gp->VerticesOut = src->Geom.VerticesOut;
       dst_gp->InputType = src->Geom.InputType;
       dst_gp->OutputType = src->Geom.OutputType;
-      dst_gp->UsesClipDistance = src->Geom.UsesClipDistance;
+      dst->UsesClipDistanceOut = src->Geom.UsesClipDistance;
       dst_gp->UsesEndPrimitive = src->Geom.UsesEndPrimitive;
    }
       break;
diff --git a/mesalib/src/mesa/program/Makefile.am b/mesalib/src/mesa/program/Makefile.am
index ab565e251..5e05782fb 100644
--- a/mesalib/src/mesa/program/Makefile.am
+++ b/mesalib/src/mesa/program/Makefile.am
@@ -24,25 +24,13 @@ include ../Makefile.sources
 AM_CPPFLAGS = $(DEFINES) $(INCLUDE_DIRS)
 AM_CFLAGS = $(VISIBILITY_CFLAGS)
 AM_CXXFLAGS = $(VISIBILITY_CXXFLAGS)
-libdricore_program_la_CFLAGS = $(NOVISIBILITY_CFLAGS)
-libdricore_program_la_CXXFLAGS = $(NOVISIBILITY_CXXFLAGS)
 
 SRCDIR = $(top_srcdir)/src/mesa/
 BUILDDIR = $(top_builddir)/src/mesa/
 
-if NEED_LIBDRICORE
-DRICORE_LIB = libdricore_program.la
-endif
-
-noinst_LTLIBRARIES = $(DRICORE_LIB)
-if NEED_LIBPROGRAM
-noinst_LTLIBRARIES += libprogram.la
-else
-check_LTLIBRARIES = libprogram.la
-endif
+noinst_LTLIBRARIES = libprogram.la
 
 libprogram_la_SOURCES = $(PROGRAM_FILES)
-libdricore_program_la_SOURCES = $(PROGRAM_FILES)
 
 lex.yy.c: program_lexer.l
 	$(AM_V_GEN) $(LEX) --never-interactive --outfile=$@ $<
diff --git a/mesalib/src/mesa/x86/read_rgba_span_x86.S b/mesalib/src/mesa/x86/read_rgba_span_x86.S
index 3be4515b1..817729973 100644
--- a/mesalib/src/mesa/x86/read_rgba_span_x86.S
+++ b/mesalib/src/mesa/x86/read_rgba_span_x86.S
@@ -77,9 +77,7 @@
  */
 
 .globl _generic_read_RGBA_span_BGRA8888_REV_MMX
-#ifndef USE_DRICORE
 .hidden _generic_read_RGBA_span_BGRA8888_REV_MMX
-#endif
 	.type	_generic_read_RGBA_span_BGRA8888_REV_MMX, @function
 _generic_read_RGBA_span_BGRA8888_REV_MMX:
 	pushl	%ebx
@@ -174,9 +172,7 @@ _generic_read_RGBA_span_BGRA8888_REV_MMX:
  */
 
 .globl _generic_read_RGBA_span_BGRA8888_REV_SSE
-#ifndef USE_DRICORE
 .hidden _generic_read_RGBA_span_BGRA8888_REV_SSE
-#endif
 	.type	_generic_read_RGBA_span_BGRA8888_REV_SSE, @function
 _generic_read_RGBA_span_BGRA8888_REV_SSE:
 	pushl	%esi
@@ -339,9 +335,7 @@ _generic_read_RGBA_span_BGRA8888_REV_SSE:
 
 	.text
 .globl _generic_read_RGBA_span_BGRA8888_REV_SSE2
-#ifndef USE_DRICORE
 .hidden _generic_read_RGBA_span_BGRA8888_REV_SSE2
-#endif
 	.type	_generic_read_RGBA_span_BGRA8888_REV_SSE2, @function
 _generic_read_RGBA_span_BGRA8888_REV_SSE2:
 	pushl	%esi
@@ -500,9 +494,7 @@ _generic_read_RGBA_span_BGRA8888_REV_SSE2:
 
 	.text
 	.globl	_generic_read_RGBA_span_RGB565_MMX
-#ifndef USE_DRICORE
         .hidden _generic_read_RGBA_span_RGB565_MMX
-#endif
 	.type	_generic_read_RGBA_span_RGB565_MMX, @function
 
 _generic_read_RGBA_span_RGB565_MMX: