fontconfig libXext mesa xserver pixman git update 31 Jul 2012

20 files changed, 725 insertions, 44 deletions

diff --git a/mesalib/src/glsl/ast.h b/mesalib/src/glsl/ast.h
index 4438b85bb..de3f2dfeb 100644
--- a/mesalib/src/glsl/ast.h
+++ b/mesalib/src/glsl/ast.h
@@ -513,6 +513,12 @@ public:
     * is used to note these cases when no type is specified.
     */
    int invariant;
+
+   /**
+    * Flag indicating that these declarators are in a uniform block,
+    * allowing UBO type qualifiers.
+    */
+   bool ubo_qualifiers_valid;
 };
 
 
diff --git a/mesalib/src/glsl/ast_to_hir.cpp b/mesalib/src/glsl/ast_to_hir.cpp
index bbe8f0596..1c54991cf 100644
--- a/mesalib/src/glsl/ast_to_hir.cpp
+++ b/mesalib/src/glsl/ast_to_hir.cpp
@@ -1917,7 +1917,8 @@ static void
 apply_type_qualifier_to_variable(const struct ast_type_qualifier *qual,
 				 ir_variable *var,
 				 struct _mesa_glsl_parse_state *state,
-				 YYLTYPE *loc)
+				 YYLTYPE *loc,
+				 bool ubo_qualifiers_valid)
 {
    if (qual->flags.q.invariant) {
       if (var->used) {
@@ -2010,24 +2011,10 @@ apply_type_qualifier_to_variable(const struct ast_type_qualifier *qual,
    if (var->interpolation != INTERP_QUALIFIER_NONE &&
        !(state->target == vertex_shader && var->mode == ir_var_out) &&
        !(state->target == fragment_shader && var->mode == ir_var_in)) {
-      const char *qual_string = NULL;
-      switch (var->interpolation) {
-      case INTERP_QUALIFIER_FLAT:
-	 qual_string = "flat";
-	 break;
-      case INTERP_QUALIFIER_NOPERSPECTIVE:
-	 qual_string = "noperspective";
-	 break;
-      case INTERP_QUALIFIER_SMOOTH:
-	 qual_string = "smooth";
-	 break;
-      }
-
       _mesa_glsl_error(loc, state,
 		       "interpolation qualifier `%s' can only be applied to "
 		       "vertex shader outputs and fragment shader inputs.",
-		       qual_string);
-
+		       var->interpolation_string());
    }
 
    var->pixel_center_integer = qual->flags.q.pixel_center_integer;
@@ -2191,6 +2178,23 @@ apply_type_qualifier_to_variable(const struct ast_type_qualifier *qual,
        var->depth_layout = ir_depth_layout_unchanged;
    else
        var->depth_layout = ir_depth_layout_none;
+
+   if (qual->flags.q.std140 ||
+       qual->flags.q.packed ||
+       qual->flags.q.shared) {
+      _mesa_glsl_error(loc, state,
+                       "uniform block layout qualifiers std140, packed, and "
+		       "shared can only be applied to uniform blocks, not "
+		       "members");
+   }
+
+   if (!ubo_qualifiers_valid &&
+       (qual->flags.q.row_major || qual->flags.q.column_major)) {
+      _mesa_glsl_error(loc, state,
+                       "uniform block layout qualifiers row_major and "
+		       "column_major can only be applied to uniform block "
+		       "members");
+   }
 }
 
 /**
@@ -2611,7 +2615,7 @@ ast_declarator_list::hir(exec_list *instructions,
       }
 
       apply_type_qualifier_to_variable(& this->type->qualifier, var, state,
-				       & loc);
+				       & loc, this->ubo_qualifiers_valid);
 
       if (this->type->qualifier.flags.q.invariant) {
 	 if ((state->target == vertex_shader) && !(var->mode == ir_var_out ||
@@ -3028,7 +3032,8 @@ ast_parameter_declarator::hir(exec_list *instructions,
    /* Apply any specified qualifiers to the parameter declaration.  Note that
     * for function parameters the default mode is 'in'.
     */
-   apply_type_qualifier_to_variable(& this->type->qualifier, var, state, & loc);
+   apply_type_qualifier_to_variable(& this->type->qualifier, var, state, & loc,
+				    false);
 
    /* From page 17 (page 23 of the PDF) of the GLSL 1.20 spec:
     *
@@ -3989,6 +3994,25 @@ ast_struct_specifier::hir(exec_list *instructions,
    return NULL;
 }
 
+static struct gl_uniform_block *
+get_next_uniform_block(struct _mesa_glsl_parse_state *state)
+{
+   if (state->num_uniform_blocks >= state->uniform_block_array_size) {
+      state->uniform_block_array_size *= 2;
+      if (state->uniform_block_array_size <= 4)
+	 state->uniform_block_array_size = 4;
+
+      state->uniform_blocks = reralloc(state,
+				       state->uniform_blocks,
+				       struct gl_uniform_block,
+				       state->uniform_block_array_size);
+   }
+
+   memset(&state->uniform_blocks[state->num_uniform_blocks],
+	  0, sizeof(*state->uniform_blocks));
+   return &state->uniform_blocks[state->num_uniform_blocks++];
+}
+
 ir_rvalue *
 ast_uniform_block::hir(exec_list *instructions,
 		       struct _mesa_glsl_parse_state *state)
@@ -3997,6 +4021,62 @@ ast_uniform_block::hir(exec_list *instructions,
     * need to turn those into ir_variables with an association
     * with this uniform block.
     */
+   struct gl_uniform_block *ubo = get_next_uniform_block(state);
+   ubo->Name = ralloc_strdup(state->uniform_blocks, this->block_name);
+
+   unsigned int num_variables = 0;
+   foreach_list_typed(ast_declarator_list, decl_list, link, &declarations) {
+      foreach_list_const(node, &decl_list->declarations) {
+	 num_variables++;
+      }
+   }
+
+   bool block_row_major = this->layout.flags.q.row_major;
+
+   ubo->Uniforms = rzalloc_array(state->uniform_blocks,
+				 struct gl_uniform_buffer_variable,
+				 num_variables);
+
+   foreach_list_typed(ast_declarator_list, decl_list, link, &declarations) {
+      exec_list declared_variables;
+
+      decl_list->hir(&declared_variables, state);
+
+      foreach_list_const(node, &declared_variables) {
+	 struct ir_variable *var = (ir_variable *)node;
+
+	 struct gl_uniform_buffer_variable *ubo_var =
+	    &ubo->Uniforms[ubo->NumUniforms++];
+
+	 var->uniform_block = ubo - state->uniform_blocks;
+
+	 ubo_var->Name = ralloc_strdup(state->uniform_blocks, var->name);
+	 ubo_var->Type = var->type;
+	 ubo_var->Buffer = ubo - state->uniform_blocks;
+	 ubo_var->Offset = 0; /* Assigned at link time. */
+	 ubo_var->RowMajor = block_row_major;
+	 if (decl_list->type->qualifier.flags.q.row_major)
+	    ubo_var->RowMajor = true;
+	 else if (decl_list->type->qualifier.flags.q.column_major)
+	    ubo_var->RowMajor = false;
+
+	 /* From the GL_ARB_uniform_buffer_object spec:
+	  *
+	  *     "Sampler types are not allowed inside of uniform
+	  *      blocks. All other types, arrays, and structures
+	  *      allowed for uniforms are allowed within a uniform
+	  *      block."
+	  */
+	 if (var->type->contains_sampler()) {
+	    YYLTYPE loc = decl_list->get_location();
+	    _mesa_glsl_error(&loc, state,
+			     "Uniform in non-default uniform block contains sampler\n");
+	 }
+      }
+
+      instructions->append_list(&declared_variables);
+   }
+
    return NULL;
 }
 
diff --git a/mesalib/src/glsl/builtin_types.h b/mesalib/src/glsl/builtin_types.h
index 8c136e4ab..d75c56261 100644
--- a/mesalib/src/glsl/builtin_types.h
+++ b/mesalib/src/glsl/builtin_types.h
@@ -63,7 +63,12 @@ const glsl_type glsl_type::builtin_core_types[] = {
 };
 
 const glsl_type *const glsl_type::bool_type  = & builtin_core_types[0];
+const glsl_type *const glsl_type::bvec2_type = & builtin_core_types[1];
+const glsl_type *const glsl_type::bvec3_type = & builtin_core_types[2];
+const glsl_type *const glsl_type::bvec4_type = & builtin_core_types[3];
 const glsl_type *const glsl_type::int_type   = & builtin_core_types[4];
+const glsl_type *const glsl_type::ivec2_type = & builtin_core_types[5];
+const glsl_type *const glsl_type::ivec3_type = & builtin_core_types[6];
 const glsl_type *const glsl_type::ivec4_type = & builtin_core_types[7];
 const glsl_type *const glsl_type::float_type = & builtin_core_types[8];
 const glsl_type *const glsl_type::vec2_type = & builtin_core_types[9];
diff --git a/mesalib/src/glsl/glcpp/glcpp-parse.y b/mesalib/src/glsl/glcpp/glcpp-parse.y
index c0c1ca197..bf6f3ad01 100644
--- a/mesalib/src/glsl/glcpp/glcpp-parse.y
+++ b/mesalib/src/glsl/glcpp/glcpp-parse.y
@@ -213,7 +213,7 @@ expanded_line:
 		parser->new_line_number = $2;
 		ralloc_asprintf_rewrite_tail (&parser->output,
 					      &parser->output_length,
-					      "#line %" PRIiMAX,
+					      "#line %" PRIiMAX "\n",
 					      $2);
 	}
 |	LINE_EXPANDED integer_constant integer_constant NEWLINE {
@@ -223,7 +223,7 @@ expanded_line:
 		parser->new_source_number = $3;
 		ralloc_asprintf_rewrite_tail (&parser->output,
 					      &parser->output_length,
-					      "#line %" PRIiMAX " %" PRIiMAX,
+					      "#line %" PRIiMAX " %" PRIiMAX "\n",
 					      $2, $3);
 	}
 ;
diff --git a/mesalib/src/glsl/glsl_parser.yy b/mesalib/src/glsl/glsl_parser.yy
index 337337591..f61d6b8dd 100644
--- a/mesalib/src/glsl/glsl_parser.yy
+++ b/mesalib/src/glsl/glsl_parser.yy
@@ -301,7 +301,7 @@ pragma_statement:
 	| PRAGMA_OPTIMIZE_OFF EOL
 	| PRAGMA_INVARIANT_ALL EOL
 	{
-	   if (state->language_version < 120) {
+	   if (state->language_version < 120 && !state->Const.GLSL_100ES) {
 	      _mesa_glsl_warning(& @1, state,
 				 "pragma `invariant(all)' not supported in %s",
 				 state->version_string);
@@ -1967,6 +1967,7 @@ member_declaration:
 	   type->specifier = $3;
 	   $$ = new(ctx) ast_declarator_list(type);
 	   $$->set_location(yylloc);
+	   $$->ubo_qualifiers_valid = true;
 
 	   $$->declarations.push_degenerate_list_at_head(& $4->link);
 	}
@@ -1980,6 +1981,7 @@ member_declaration:
 	   type->specifier = $2;
 	   $$ = new(ctx) ast_declarator_list(type);
 	   $$->set_location(yylloc);
+	   $$->ubo_qualifiers_valid = true;
 
 	   $$->declarations.push_degenerate_list_at_head(& $3->link);
 	}
diff --git a/mesalib/src/glsl/glsl_parser_extras.cpp b/mesalib/src/glsl/glsl_parser_extras.cpp
index d9ee406cf..7a9b22197 100644
--- a/mesalib/src/glsl/glsl_parser_extras.cpp
+++ b/mesalib/src/glsl/glsl_parser_extras.cpp
@@ -27,6 +27,7 @@
 
 extern "C" {
 #include "main/core.h" /* for struct gl_context */
+#include "main/context.h"
 }
 
 #include "ralloc.h"
@@ -90,19 +91,17 @@ _mesa_glsl_parse_state::_mesa_glsl_parse_state(struct gl_context *_ctx,
     */
    this->Const.GLSL_100ES = (ctx->API == API_OPENGLES2)
       || ctx->Extensions.ARB_ES2_compatibility;
-   this->Const.GLSL_110 = (ctx->API == API_OPENGL);
-   this->Const.GLSL_120 = (ctx->API == API_OPENGL)
-      && (ctx->Const.GLSLVersion >= 120);
-   this->Const.GLSL_130 = (ctx->API == API_OPENGL)
-      && (ctx->Const.GLSLVersion >= 130);
-   this->Const.GLSL_140 = (ctx->API == API_OPENGL)
-      && (ctx->Const.GLSLVersion >= 140);
+   bool is_desktop_gl = _mesa_is_desktop_gl(ctx);
+   this->Const.GLSL_110 = is_desktop_gl;
+   this->Const.GLSL_120 = is_desktop_gl && (ctx->Const.GLSLVersion >= 120);
+   this->Const.GLSL_130 = is_desktop_gl && (ctx->Const.GLSLVersion >= 130);
+   this->Const.GLSL_140 = is_desktop_gl && (ctx->Const.GLSLVersion >= 140);
 
    const unsigned lowest_version =
       (ctx->API == API_OPENGLES2) || ctx->Extensions.ARB_ES2_compatibility
       ? 100 : 110;
    const unsigned highest_version =
-      (ctx->API == API_OPENGL) ? ctx->Const.GLSLVersion : 100;
+      is_desktop_gl ? ctx->Const.GLSLVersion : 100;
    char *supported = ralloc_strdup(this, "");
 
    for (unsigned ver = lowest_version; ver <= highest_version; ver += 10) {
@@ -773,6 +772,7 @@ ast_declarator_list::ast_declarator_list(ast_fully_specified_type *type)
 {
    this->type = type;
    this->invariant = false;
+   this->ubo_qualifiers_valid = false;
 }
 
 void
diff --git a/mesalib/src/glsl/glsl_parser_extras.h b/mesalib/src/glsl/glsl_parser_extras.h
index d97217ef9..fc5d11cb9 100644
--- a/mesalib/src/glsl/glsl_parser_extras.h
+++ b/mesalib/src/glsl/glsl_parser_extras.h
@@ -82,6 +82,10 @@ struct _mesa_glsl_parse_state {
    exec_list translation_unit;
    glsl_symbol_table *symbols;
 
+   unsigned num_uniform_blocks;
+   unsigned uniform_block_array_size;
+   struct gl_uniform_block *uniform_blocks;
+
    bool es_shader;
    unsigned language_version;
    const char *version_string;
diff --git a/mesalib/src/glsl/glsl_types.cpp b/mesalib/src/glsl/glsl_types.cpp
index 8a34b8eb0..3d7866058 100644
--- a/mesalib/src/glsl/glsl_types.cpp
+++ b/mesalib/src/glsl/glsl_types.cpp
@@ -628,3 +628,223 @@ glsl_type::can_implicitly_convert_to(const glsl_type *desired) const
           && this->is_integer()
           && this->vector_elements == desired->vector_elements;
 }
+
+unsigned
+glsl_type::std140_base_alignment(bool row_major) const
+{
+   /* (1) If the member is a scalar consuming <N> basic machine units, the
+    *     base alignment is <N>.
+    *
+    * (2) If the member is a two- or four-component vector with components
+    *     consuming <N> basic machine units, the base alignment is 2<N> or
+    *     4<N>, respectively.
+    *
+    * (3) If the member is a three-component vector with components consuming
+    *     <N> basic machine units, the base alignment is 4<N>.
+    */
+   if (this->is_scalar() || this->is_vector()) {
+      switch (this->vector_elements) {
+      case 1:
+	 return 4;
+      case 2:
+	 return 8;
+      case 3:
+      case 4:
+	 return 16;
+      }
+   }
+
+   /* (4) If the member is an array of scalars or vectors, the base alignment
+    *     and array stride are set to match the base alignment of a single
+    *     array element, according to rules (1), (2), and (3), and rounded up
+    *     to the base alignment of a vec4. The array may have padding at the
+    *     end; the base offset of the member following the array is rounded up
+    *     to the next multiple of the base alignment.
+    *
+    * (6) If the member is an array of <S> column-major matrices with <C>
+    *     columns and <R> rows, the matrix is stored identically to a row of
+    *     <S>*<C> column vectors with <R> components each, according to rule
+    *     (4).
+    *
+    * (8) If the member is an array of <S> row-major matrices with <C> columns
+    *     and <R> rows, the matrix is stored identically to a row of <S>*<R>
+    *     row vectors with <C> components each, according to rule (4).
+    *
+    * (10) If the member is an array of <S> structures, the <S> elements of
+    *      the array are laid out in order, according to rule (9).
+    */
+   if (this->is_array()) {
+      if (this->fields.array->is_scalar() ||
+	  this->fields.array->is_vector() ||
+	  this->fields.array->is_matrix()) {
+	 return MAX2(this->fields.array->std140_base_alignment(row_major), 16);
+      } else {
+	 assert(this->fields.array->is_record());
+	 return this->fields.array->std140_base_alignment(row_major);
+      }
+   }
+
+   /* (5) If the member is a column-major matrix with <C> columns and
+    *     <R> rows, the matrix is stored identically to an array of
+    *     <C> column vectors with <R> components each, according to
+    *     rule (4).
+    *
+    * (7) If the member is a row-major matrix with <C> columns and <R>
+    *     rows, the matrix is stored identically to an array of <R>
+    *     row vectors with <C> components each, according to rule (4).
+    */
+   if (this->is_matrix()) {
+      const struct glsl_type *vec_type;
+      if (row_major) {
+	 vec_type = get_instance(GLSL_TYPE_FLOAT, this->vector_elements, 1);
+      } else {
+	 vec_type = get_instance(GLSL_TYPE_FLOAT, this->matrix_columns, 1);
+      }
+
+      return vec_type->std140_base_alignment(false);
+   }
+
+   /* (9) If the member is a structure, the base alignment of the
+    *     structure is <N>, where <N> is the largest base alignment
+    *     value of any of its members, and rounded up to the base
+    *     alignment of a vec4. The individual members of this
+    *     sub-structure are then assigned offsets by applying this set
+    *     of rules recursively, where the base offset of the first
+    *     member of the sub-structure is equal to the aligned offset
+    *     of the structure. The structure may have padding at the end;
+    *     the base offset of the member following the sub-structure is
+    *     rounded up to the next multiple of the base alignment of the
+    *     structure.
+    */
+   if (this->is_record()) {
+      unsigned base_alignment = 16;
+      for (unsigned i = 0; i < this->length; i++) {
+	 const struct glsl_type *field_type = this->fields.structure[i].type;
+	 base_alignment = MAX2(base_alignment,
+			       field_type->std140_base_alignment(row_major));
+      }
+      return base_alignment;
+   }
+
+   assert(!"not reached");
+   return -1;
+}
+
+static unsigned
+align(unsigned val, unsigned align)
+{
+   return (val + align - 1) / align * align;
+}
+
+unsigned
+glsl_type::std140_size(bool row_major) const
+{
+   /* (1) If the member is a scalar consuming <N> basic machine units, the
+    *     base alignment is <N>.
+    *
+    * (2) If the member is a two- or four-component vector with components
+    *     consuming <N> basic machine units, the base alignment is 2<N> or
+    *     4<N>, respectively.
+    *
+    * (3) If the member is a three-component vector with components consuming
+    *     <N> basic machine units, the base alignment is 4<N>.
+    */
+   if (this->is_scalar() || this->is_vector()) {
+      return this->vector_elements * 4;
+   }
+
+   /* (5) If the member is a column-major matrix with <C> columns and
+    *     <R> rows, the matrix is stored identically to an array of
+    *     <C> column vectors with <R> components each, according to
+    *     rule (4).
+    *
+    * (6) If the member is an array of <S> column-major matrices with <C>
+    *     columns and <R> rows, the matrix is stored identically to a row of
+    *     <S>*<C> column vectors with <R> components each, according to rule
+    *     (4).
+    *
+    * (7) If the member is a row-major matrix with <C> columns and <R>
+    *     rows, the matrix is stored identically to an array of <R>
+    *     row vectors with <C> components each, according to rule (4).
+    *
+    * (8) If the member is an array of <S> row-major matrices with <C> columns
+    *     and <R> rows, the matrix is stored identically to a row of <S>*<R>
+    *     row vectors with <C> components each, according to rule (4).
+    */
+   if (this->is_matrix() || (this->is_array() &&
+			     this->fields.array->is_matrix())) {
+      const struct glsl_type *element_type;
+      const struct glsl_type *vec_type;
+      unsigned int array_len;
+
+      if (this->is_array()) {
+	 element_type = this->fields.array;
+	 array_len = this->length;
+      } else {
+	 element_type = this;
+	 array_len = 1;
+      }
+
+      if (row_major) {
+	 vec_type = get_instance(GLSL_TYPE_FLOAT,
+				 element_type->matrix_columns, 1);
+	 array_len *= element_type->vector_elements;
+      } else {
+	 vec_type = get_instance(GLSL_TYPE_FLOAT,
+				 element_type->vector_elements, 1);
+	 array_len *= element_type->matrix_columns;
+      }
+      const glsl_type *array_type = glsl_type::get_array_instance(vec_type,
+								  array_len);
+
+      return array_type->std140_size(false);
+   }
+
+   /* (4) If the member is an array of scalars or vectors, the base alignment
+    *     and array stride are set to match the base alignment of a single
+    *     array element, according to rules (1), (2), and (3), and rounded up
+    *     to the base alignment of a vec4. The array may have padding at the
+    *     end; the base offset of the member following the array is rounded up
+    *     to the next multiple of the base alignment.
+    *
+    * (10) If the member is an array of <S> structures, the <S> elements of
+    *      the array are laid out in order, according to rule (9).
+    */
+   if (this->is_array()) {
+      if (this->fields.array->is_record()) {
+	 return this->length * this->fields.array->std140_size(row_major);
+      } else {
+	 unsigned element_base_align =
+	    this->fields.array->std140_base_alignment(row_major);
+	 return this->length * MAX2(element_base_align, 16);
+      }
+   }
+
+   /* (9) If the member is a structure, the base alignment of the
+    *     structure is <N>, where <N> is the largest base alignment
+    *     value of any of its members, and rounded up to the base
+    *     alignment of a vec4. The individual members of this
+    *     sub-structure are then assigned offsets by applying this set
+    *     of rules recursively, where the base offset of the first
+    *     member of the sub-structure is equal to the aligned offset
+    *     of the structure. The structure may have padding at the end;
+    *     the base offset of the member following the sub-structure is
+    *     rounded up to the next multiple of the base alignment of the
+    *     structure.
+    */
+   if (this->is_record()) {
+      unsigned size = 0;
+      for (unsigned i = 0; i < this->length; i++) {
+	 const struct glsl_type *field_type = this->fields.structure[i].type;
+	 unsigned align = field_type->std140_base_alignment(row_major);
+	 size = (size + align - 1) / align * align;
+	 size += field_type->std140_size(row_major);
+      }
+      size = align(size,
+		   this->fields.structure[0].type->std140_base_alignment(row_major));
+      return size;
+   }
+
+   assert(!"not reached");
+   return -1;
+}
diff --git a/mesalib/src/glsl/glsl_types.h b/mesalib/src/glsl/glsl_types.h
index 48d41d7f8..915d1a22b 100644
--- a/mesalib/src/glsl/glsl_types.h
+++ b/mesalib/src/glsl/glsl_types.h
@@ -152,6 +152,8 @@ struct glsl_type {
    static const glsl_type *const error_type;
    static const glsl_type *const void_type;
    static const glsl_type *const int_type;
+   static const glsl_type *const ivec2_type;
+   static const glsl_type *const ivec3_type;
    static const glsl_type *const ivec4_type;
    static const glsl_type *const uint_type;
    static const glsl_type *const uvec2_type;
@@ -162,6 +164,9 @@ struct glsl_type {
    static const glsl_type *const vec3_type;
    static const glsl_type *const vec4_type;
    static const glsl_type *const bool_type;
+   static const glsl_type *const bvec2_type;
+   static const glsl_type *const bvec3_type;
+   static const glsl_type *const bvec4_type;
    static const glsl_type *const mat2_type;
    static const glsl_type *const mat2x3_type;
    static const glsl_type *const mat2x4_type;
@@ -243,6 +248,19 @@ struct glsl_type {
    unsigned component_slots() const;
 
    /**
+    * Alignment in bytes of the start of this type in a std140 uniform
+    * block.
+    */
+   unsigned std140_base_alignment(bool row_major) const;
+
+   /** Size in bytes of this type in a std140 uniform block.
+    *
+    * Note that this is not GL_UNIFORM_SIZE (which is the number of
+    * elements in the array)
+    */
+   unsigned std140_size(bool row_major) const;
+
+   /**
     * \brief Can this type be implicitly converted to another?
     *
     * \return True if the types are identical or if this type can be converted
diff --git a/mesalib/src/glsl/ir.cpp b/mesalib/src/glsl/ir.cpp
index 1c9eec6e2..b0e38d820 100644
--- a/mesalib/src/glsl/ir.cpp
+++ b/mesalib/src/glsl/ir.cpp
@@ -1491,6 +1491,7 @@ ir_variable::ir_variable(const struct glsl_type *type, const char *name,
    this->explicit_location = false;
    this->has_initializer = false;
    this->location = -1;
+   this->uniform_block = -1;
    this->warn_extension = NULL;
    this->constant_value = NULL;
    this->constant_initializer = NULL;
diff --git a/mesalib/src/glsl/ir.h b/mesalib/src/glsl/ir.h
index 9bbf3b7ef..f019837d5 100644
--- a/mesalib/src/glsl/ir.h
+++ b/mesalib/src/glsl/ir.h
@@ -453,7 +453,8 @@ public:
     *   - Vertex shader output: one of the values from \c gl_vert_result.
     *   - Fragment shader input: one of the values from \c gl_frag_attrib.
     *   - Fragment shader output: one of the values from \c gl_frag_result.
-    *   - Uniforms: Per-stage uniform slot number.
+    *   - Uniforms: Per-stage uniform slot number for default uniform block.
+    *   - Uniforms: Index within the uniform block definition for UBO members.
     *   - Other: This field is not currently used.
     *
     * If the variable is a uniform, shader input, or shader output, and the
@@ -462,6 +463,16 @@ public:
    int location;
 
    /**
+    * Uniform block number for uniforms.
+    *
+    * This index is into the shader's list of uniform blocks, not the
+    * linked program's merged list.
+    *
+    * If the variable is not in a uniform block, the value will be -1.
+    */
+   int uniform_block;
+
+   /**
     * output index for dual source blending.
     */
    int index;
@@ -1016,7 +1027,7 @@ enum ir_expression_operation {
    /**
     * A sentinel marking the last of all operations.
     */
-   ir_last_opcode = ir_last_binop
+   ir_last_opcode = ir_quadop_vector
 };
 
 class ir_expression : public ir_rvalue {
diff --git a/mesalib/src/glsl/ir_clone.cpp b/mesalib/src/glsl/ir_clone.cpp
index 591fe7b77..4314efa76 100644
--- a/mesalib/src/glsl/ir_clone.cpp
+++ b/mesalib/src/glsl/ir_clone.cpp
@@ -54,6 +54,7 @@ ir_variable::clone(void *mem_ctx, struct hash_table *ht) const
    var->interpolation = this->interpolation;
    var->location = this->location;
    var->index = this->index;
+   var->uniform_block = this->uniform_block;
    var->warn_extension = this->warn_extension;
    var->origin_upper_left = this->origin_upper_left;
    var->pixel_center_integer = this->pixel_center_integer;
diff --git a/mesalib/src/glsl/ir_set_program_inouts.cpp b/mesalib/src/glsl/ir_set_program_inouts.cpp
index a7415c7e3..e5de07e01 100644
--- a/mesalib/src/glsl/ir_set_program_inouts.cpp
+++ b/mesalib/src/glsl/ir_set_program_inouts.cpp
@@ -26,8 +26,8 @@
  *
  * Sets the InputsRead and OutputsWritten of Mesa programs.
  *
- * Additionally, for fragment shaders, sets the InterpQualifier array and
- * IsCentroid bitfield.
+ * Additionally, for fragment shaders, sets the InterpQualifier array, the
+ * IsCentroid bitfield, and the UsesDFdy flag.
  *
  * Mesa programs (gl_program, not gl_shader_program) have a set of
  * flags indicating which varyings are read and written.  Computing
@@ -61,6 +61,8 @@ public:
 
    virtual ir_visitor_status visit_enter(ir_dereference_array *);
    virtual ir_visitor_status visit_enter(ir_function_signature *);
+   virtual ir_visitor_status visit_enter(ir_expression *);
+   virtual ir_visitor_status visit_enter(ir_discard *);
    virtual ir_visitor_status visit(ir_dereference_variable *);
    virtual ir_visitor_status visit(ir_variable *);
 
@@ -169,6 +171,28 @@ ir_set_program_inouts_visitor::visit_enter(ir_function_signature *ir)
    return visit_continue_with_parent;
 }
 
+ir_visitor_status
+ir_set_program_inouts_visitor::visit_enter(ir_expression *ir)
+{
+   if (is_fragment_shader && ir->operation == ir_unop_dFdy) {
+      gl_fragment_program *fprog = (gl_fragment_program *) prog;
+      fprog->UsesDFdy = true;
+   }
+   return visit_continue;
+}
+
+ir_visitor_status
+ir_set_program_inouts_visitor::visit_enter(ir_discard *)
+{
+   /* discards are only allowed in fragment shaders. */
+   assert(is_fragment_shader);
+
+   gl_fragment_program *fprog = (gl_fragment_program *) prog;
+   fprog->UsesKill = true;
+
+   return visit_continue;
+}
+
 void
 do_set_program_inouts(exec_list *instructions, struct gl_program *prog,
                       bool is_fragment_shader)
@@ -179,9 +203,11 @@ do_set_program_inouts(exec_list *instructions, struct gl_program *prog,
    prog->OutputsWritten = 0;
    prog->SystemValuesRead = 0;
    if (is_fragment_shader) {
-      memset(((gl_fragment_program *) prog)->InterpQualifier, 0,
-             sizeof(((gl_fragment_program *) prog)->InterpQualifier));
-      ((gl_fragment_program *) prog)->IsCentroid = 0;
+      gl_fragment_program *fprog = (gl_fragment_program *) prog;
+      memset(fprog->InterpQualifier, 0, sizeof(fprog->InterpQualifier));
+      fprog->IsCentroid = 0;
+      fprog->UsesDFdy = false;
+      fprog->UsesKill = false;
    }
    visit_list_elements(&v, instructions);
 }
diff --git a/mesalib/src/glsl/ir_uniform.h b/mesalib/src/glsl/ir_uniform.h
index 225da3fc5..913c53773 100644
--- a/mesalib/src/glsl/ir_uniform.h
+++ b/mesalib/src/glsl/ir_uniform.h
@@ -119,6 +119,40 @@ struct gl_uniform_storage {
     * uniform if the \c ::driver_storage interface is not used.
     */
    union gl_constant_value *storage;
+
+   /** Fields for GL_ARB_uniform_buffer_object
+    * @{
+    */
+
+   /**
+    * GL_UNIFORM_BLOCK_INDEX: index of the uniform block containing
+    * the uniform, or -1 for the default uniform block.  Note that the
+    * index is into the linked program's UniformBlocks[] array, not
+    * the linked shader's.
+    */
+   int block_index;
+
+   /** GL_UNIFORM_OFFSET: byte offset within the uniform block, or -1. */
+   int offset;
+
+   /**
+    * GL_UNIFORM_MATRIX_STRIDE: byte stride between columns or rows of
+    * a matrix.  Set to 0 for non-matrices in UBOs, or -1 for uniforms
+    * in the default uniform block.
+    */
+   int matrix_stride;
+
+   /**
+    * GL_UNIFORM_ARRAY_STRIDE: byte stride between elements of the
+    * array.  Set to zero for non-arrays in UBOs, or -1 for uniforms
+    * in the default uniform block.
+    */
+   int array_stride;
+
+   /** GL_UNIFORM_ROW_MAJOR: true iff it's a row-major matrix in a UBO */
+   bool row_major;
+
+   /** @} */
 };
 
 #ifdef __cplusplus
diff --git a/mesalib/src/glsl/link_uniforms.cpp b/mesalib/src/glsl/link_uniforms.cpp
index 92e2a1fa5..d7ef5d4d2 100644
--- a/mesalib/src/glsl/link_uniforms.cpp
+++ b/mesalib/src/glsl/link_uniforms.cpp
@@ -27,6 +27,13 @@
 #include "ir_uniform.h"
 #include "glsl_symbol_table.h"
 #include "program/hash_table.h"
+#include "program.h"
+
+static inline unsigned int
+align(unsigned int a, unsigned int align)
+{
+   return (a + align - 1) / align * align;
+}
 
 /**
  * \file link_uniforms.cpp
@@ -216,6 +223,28 @@ public:
       this->shader_shadow_samplers = 0;
    }
 
+   void set_and_process(struct gl_shader_program *prog,
+			ir_variable *var)
+   {
+      ubo_var = NULL;
+      if (var->uniform_block != -1) {
+	 struct gl_uniform_block *block =
+	    &prog->UniformBlocks[var->uniform_block];
+
+	 ubo_block_index = var->uniform_block;
+	 ubo_var_index = var->location;
+	 ubo_var = &block->Uniforms[var->location];
+	 ubo_byte_offset = ubo_var->Offset;
+      }
+
+      process(var);
+   }
+
+   struct gl_uniform_buffer_variable *ubo_var;
+   int ubo_block_index;
+   int ubo_var_index;
+   int ubo_byte_offset;
+
 private:
    virtual void visit_field(const glsl_type *type, const char *name)
    {
@@ -291,6 +320,25 @@ private:
       this->uniforms[id].num_driver_storage = 0;
       this->uniforms[id].driver_storage = NULL;
       this->uniforms[id].storage = this->values;
+      if (this->ubo_var) {
+	 this->uniforms[id].block_index = this->ubo_block_index;
+
+	 unsigned alignment = type->std140_base_alignment(ubo_var->RowMajor);
+	 this->ubo_byte_offset = align(this->ubo_byte_offset, alignment);
+	 this->uniforms[id].offset = this->ubo_byte_offset;
+	 this->ubo_byte_offset += type->std140_size(ubo_var->RowMajor);
+
+	 this->uniforms[id].array_stride = 0;
+	 this->uniforms[id].matrix_stride = 0;
+	 this->uniforms[id].row_major = base_type->is_matrix() &&
+	    ubo_var->RowMajor;
+      } else {
+	 this->uniforms[id].block_index = -1;
+	 this->uniforms[id].offset = -1;
+	 this->uniforms[id].array_stride = -1;
+	 this->uniforms[id].matrix_stride = -1;
+	 this->uniforms[id].row_major = false;
+      }
 
       this->values += values_for_type(type);
    }
@@ -316,6 +364,125 @@ public:
    unsigned shader_shadow_samplers;
 };
 
+/**
+ * Merges a uniform block into an array of uniform blocks that may or
+ * may not already contain a copy of it.
+ *
+ * Returns the index of the new block in the array.
+ */
+int
+link_cross_validate_uniform_block(void *mem_ctx,
+				  struct gl_uniform_block **linked_blocks,
+				  unsigned int *num_linked_blocks,
+				  struct gl_uniform_block *new_block)
+{
+   for (unsigned int i = 0; i < *num_linked_blocks; i++) {
+      struct gl_uniform_block *old_block = &(*linked_blocks)[i];
+      if (strcmp(old_block->Name, new_block->Name) == 0) {
+	 if (old_block->NumUniforms != new_block->NumUniforms) {
+	    return -1;
+	 }
+
+	 for (unsigned j = 0; j < old_block->NumUniforms; j++) {
+	    if (strcmp(old_block->Uniforms[j].Name,
+		       new_block->Uniforms[j].Name) != 0)
+	       return -1;
+
+	    if (old_block->Uniforms[j].Offset !=
+		new_block->Uniforms[j].Offset)
+	       return -1;
+
+	    if (old_block->Uniforms[j].RowMajor !=
+		new_block->Uniforms[j].RowMajor)
+	       return -1;
+	 }
+	 return i;
+      }
+   }
+
+   *linked_blocks = reralloc(mem_ctx, *linked_blocks,
+			     struct gl_uniform_block,
+			     *num_linked_blocks + 1);
+   int linked_block_index = (*num_linked_blocks)++;
+   struct gl_uniform_block *linked_block = &(*linked_blocks)[linked_block_index];
+
+   memcpy(linked_block, new_block, sizeof(*new_block));
+   linked_block->Uniforms = ralloc_array(*linked_blocks,
+					 struct gl_uniform_buffer_variable,
+					 linked_block->NumUniforms);
+
+   memcpy(linked_block->Uniforms,
+	  new_block->Uniforms,
+	  sizeof(*linked_block->Uniforms) * linked_block->NumUniforms);
+
+   for (unsigned int i = 0; i < linked_block->NumUniforms; i++) {
+      struct gl_uniform_buffer_variable *ubo_var =
+	 &linked_block->Uniforms[i];
+
+      ubo_var->Name = ralloc_strdup(*linked_blocks, ubo_var->Name);
+   }
+
+   return linked_block_index;
+}
+
+/**
+ * Walks the IR and update the references to uniform blocks in the
+ * ir_variables to point at linked shader's list (previously, they
+ * would point at the uniform block list in one of the pre-linked
+ * shaders).
+ */
+static bool
+link_update_uniform_buffer_variables(struct gl_shader *shader)
+{
+   foreach_list(node, shader->ir) {
+      ir_variable *const var = ((ir_instruction *) node)->as_variable();
+
+      if ((var == NULL) || (var->uniform_block == -1))
+	 continue;
+
+      assert(var->mode == ir_var_uniform);
+
+      bool found = false;
+      for (unsigned i = 0; i < shader->NumUniformBlocks; i++) {
+	 for (unsigned j = 0; j < shader->UniformBlocks[i].NumUniforms; j++) {
+	    if (!strcmp(var->name, shader->UniformBlocks[i].Uniforms[j].Name)) {
+	       found = true;
+	       var->uniform_block = i;
+	       var->location = j;
+	       break;
+	    }
+	 }
+	 if (found)
+	    break;
+      }
+      assert(found);
+   }
+
+   return true;
+}
+
+void
+link_assign_uniform_block_offsets(struct gl_shader *shader)
+{
+   for (unsigned b = 0; b < shader->NumUniformBlocks; b++) {
+      struct gl_uniform_block *block = &shader->UniformBlocks[b];
+
+      unsigned offset = 0;
+      for (unsigned int i = 0; i < block->NumUniforms; i++) {
+	 struct gl_uniform_buffer_variable *ubo_var = &block->Uniforms[i];
+	 const struct glsl_type *type = ubo_var->Type;
+
+	 unsigned alignment = type->std140_base_alignment(ubo_var->RowMajor);
+	 unsigned size = type->std140_size(ubo_var->RowMajor);
+
+	 offset = align(offset, alignment);
+	 ubo_var->Offset = offset;
+	 offset += size;
+      }
+      block->UniformBufferSize = offset;
+   }
+}
+
 void
 link_assign_uniform_locations(struct gl_shader_program *prog)
 {
@@ -340,6 +507,14 @@ link_assign_uniform_locations(struct gl_shader_program *prog)
     */
    memset(prog->SamplerUnits, 0, sizeof(prog->SamplerUnits));
 
+   for (unsigned i = 0; i < MESA_SHADER_TYPES; i++) {
+      if (prog->_LinkedShaders[i] == NULL)
+	 continue;
+
+      if (!link_update_uniform_buffer_variables(prog->_LinkedShaders[i]))
+	 return;
+   }
+
    /* First pass: Count the uniform resources used by the user-defined
     * uniforms.  While this happens, each active uniform will have an index
     * assigned to it.
@@ -412,7 +587,7 @@ link_assign_uniform_locations(struct gl_shader_program *prog)
 	 if (strncmp("gl_", var->name, 3) == 0)
 	    continue;
 
-	 parcel.process(var);
+	 parcel.set_and_process(prog, var);
       }
 
       prog->_LinkedShaders[i]->active_samplers = parcel.shader_samplers_used;
diff --git a/mesalib/src/glsl/linker.cpp b/mesalib/src/glsl/linker.cpp
index f06298cf6..bfdde4023 100644
--- a/mesalib/src/glsl/linker.cpp
+++ b/mesalib/src/glsl/linker.cpp
@@ -581,6 +581,48 @@ cross_validate_uniforms(struct gl_shader_program *prog)
 				 MESA_SHADER_TYPES, true);
 }
 
+/**
+ * Accumulates the array of prog->UniformBlocks and checks that all
+ * definitons of blocks agree on their contents.
+ */
+static bool
+interstage_cross_validate_uniform_blocks(struct gl_shader_program *prog)
+{
+   unsigned max_num_uniform_blocks = 0;
+   for (unsigned i = 0; i < MESA_SHADER_TYPES; i++) {
+      if (prog->_LinkedShaders[i])
+	 max_num_uniform_blocks += prog->_LinkedShaders[i]->NumUniformBlocks;
+   }
+
+   for (unsigned i = 0; i < MESA_SHADER_TYPES; i++) {
+      struct gl_shader *sh = prog->_LinkedShaders[i];
+
+      prog->UniformBlockStageIndex[i] = ralloc_array(prog, int,
+						     max_num_uniform_blocks);
+      for (unsigned int j = 0; j < max_num_uniform_blocks; j++)
+	 prog->UniformBlockStageIndex[i][j] = -1;
+
+      if (sh == NULL)
+	 continue;
+
+      for (unsigned int j = 0; j < sh->NumUniformBlocks; j++) {
+	 int index = link_cross_validate_uniform_block(prog,
+						       &prog->UniformBlocks,
+						       &prog->NumUniformBlocks,
+						       &sh->UniformBlocks[j]);
+
+	 if (index == -1) {
+	    linker_error(prog, "uniform block `%s' has mismatching definitions",
+			 sh->UniformBlocks[j].Name);
+	    return false;
+	 }
+
+	 prog->UniformBlockStageIndex[i][index] = j;
+      }
+   }
+
+   return true;
+}
 
 /**
  * Validate that outputs from one stage match inputs of another
@@ -910,7 +952,6 @@ public:
    }
 };
 
-
 /**
  * Combine a group of shaders for a single stage to generate a linked shader
  *
@@ -925,11 +966,33 @@ link_intrastage_shaders(void *mem_ctx,
 			struct gl_shader **shader_list,
 			unsigned num_shaders)
 {
+   struct gl_uniform_block *uniform_blocks = NULL;
+   unsigned num_uniform_blocks = 0;
+
    /* Check that global variables defined in multiple shaders are consistent.
     */
    if (!cross_validate_globals(prog, shader_list, num_shaders, false))
       return NULL;
 
+   /* Check that uniform blocks between shaders for a stage agree. */
+   for (unsigned i = 0; i < num_shaders; i++) {
+      struct gl_shader *sh = shader_list[i];
+
+      for (unsigned j = 0; j < shader_list[i]->NumUniformBlocks; j++) {
+	 link_assign_uniform_block_offsets(shader_list[i]);
+
+	 int index = link_cross_validate_uniform_block(mem_ctx,
+						       &uniform_blocks,
+						       &num_uniform_blocks,
+						       &sh->UniformBlocks[j]);
+	 if (index == -1) {
+	    linker_error(prog, "uniform block `%s' has mismatching definitions",
+			 sh->UniformBlocks[j].Name);
+	    return NULL;
+	 }
+      }
+   }
+
    /* Check that there is only a single definition of each function signature
     * across all shaders.
     */
@@ -997,6 +1060,10 @@ link_intrastage_shaders(void *mem_ctx,
    linked->ir = new(linked) exec_list;
    clone_ir_list(mem_ctx, linked->ir, main->ir);
 
+   linked->UniformBlocks = uniform_blocks;
+   linked->NumUniformBlocks = num_uniform_blocks;
+   ralloc_steal(linked, linked->UniformBlocks);
+
    populate_symbol_table(linked);
 
    /* The a pointer to the main function in the final linked shader (i.e., the
@@ -1100,6 +1167,13 @@ update_array_sizes(struct gl_shader_program *prog)
 	     !var->type->is_array())
 	    continue;
 
+	 /* GL_ARB_uniform_buffer_object says that std140 uniforms
+	  * will not be eliminated.  Since we always do std140, just
+	  * don't resize arrays in UBOs.
+	  */
+	 if (var->uniform_block != -1)
+	    continue;
+
 	 unsigned int size = var->max_array_access;
 	 for (unsigned j = 0; j < MESA_SHADER_TYPES; j++) {
 	       if (prog->_LinkedShaders[j] == NULL)
@@ -2289,11 +2363,17 @@ link_shaders(struct gl_context *ctx, struct gl_shader_program *prog)
    prog->Validated = false;
    prog->_Used = false;
 
-   if (prog->InfoLog != NULL)
-      ralloc_free(prog->InfoLog);
-
+   ralloc_free(prog->InfoLog);
    prog->InfoLog = ralloc_strdup(NULL, "");
 
+   ralloc_free(prog->UniformBlocks);
+   prog->UniformBlocks = NULL;
+   prog->NumUniformBlocks = 0;
+   for (int i = 0; i < MESA_SHADER_TYPES; i++) {
+      ralloc_free(prog->UniformBlockStageIndex[i]);
+      prog->UniformBlockStageIndex[i] = NULL;
+   }
+
    /* Separate the shaders into groups based on their type.
     */
    struct gl_shader **vert_shader_list;
@@ -2422,6 +2502,9 @@ link_shaders(struct gl_context *ctx, struct gl_shader_program *prog)
       }
    }
 
+   if (!interstage_cross_validate_uniform_blocks(prog))
+      goto done;
+
    /* Do common optimization before assigning storage for attributes,
     * uniforms, and varyings.  Later optimization could possibly make
     * some of that unused.
diff --git a/mesalib/src/glsl/linker.h b/mesalib/src/glsl/linker.h
index d0aaf3e1e..7d2e98a15 100644
--- a/mesalib/src/glsl/linker.h
+++ b/mesalib/src/glsl/linker.h
@@ -40,6 +40,15 @@ link_assign_uniform_locations(struct gl_shader_program *prog);
 extern void
 link_set_uniform_initializers(struct gl_shader_program *prog);
 
+extern int
+link_cross_validate_uniform_block(void *mem_ctx,
+				  struct gl_uniform_block **linked_blocks,
+				  unsigned int *num_linked_blocks,
+				  struct gl_uniform_block *new_block);
+
+void
+link_assign_uniform_block_offsets(struct gl_shader *shader);
+
 /**
  * Class for processing all of the leaf fields of an uniform
  *
diff --git a/mesalib/src/glsl/lower_vector.cpp b/mesalib/src/glsl/lower_vector.cpp
index 57963a121..0cd6909db 100644
--- a/mesalib/src/glsl/lower_vector.cpp
+++ b/mesalib/src/glsl/lower_vector.cpp
@@ -183,7 +183,7 @@ lower_vector_visitor::handle_rvalue(ir_rvalue **rvalue)
    if (assigned > 0) {
       ir_constant *const c =
 	 new(mem_ctx) ir_constant(glsl_type::get_instance(expr->type->base_type,
-							  assigned, 0),
+							  assigned, 1),
 				  &d);
       ir_dereference *const lhs = new(mem_ctx) ir_dereference_variable(temp);
       ir_assignment *const assign =
diff --git a/mesalib/src/glsl/opt_dead_code.cpp b/mesalib/src/glsl/opt_dead_code.cpp
index 0578f1737..de8475f95 100644
--- a/mesalib/src/glsl/opt_dead_code.cpp
+++ b/mesalib/src/glsl/opt_dead_code.cpp
@@ -95,9 +95,15 @@ do_dead_code(exec_list *instructions, bool uniform_locations_assigned)
 	 /* uniform initializers are precious, and could get used by another
 	  * stage.  Also, once uniform locations have been assigned, the
 	  * declaration cannot be deleted.
+	  *
+	  * Also, GL_ARB_uniform_buffer_object says that std140
+	  * uniforms will not be eliminated.  Since we always do
+	  * std140, just don't eliminate uniforms in UBOs.
 	  */
 	 if (entry->var->mode == ir_var_uniform &&
-	     (uniform_locations_assigned || entry->var->constant_value))
+	     (uniform_locations_assigned ||
+	      entry->var->constant_value ||
+	      entry->var->uniform_block != -1))
 	    continue;
 
 	 entry->var->remove();
diff --git a/mesalib/src/glsl/strtod.c b/mesalib/src/glsl/strtod.c
index a876e138b..47c1f0ed6 100644
--- a/mesalib/src/glsl/strtod.c
+++ b/mesalib/src/glsl/strtod.c
@@ -45,7 +45,7 @@ double
 glsl_strtod(const char *s, char **end)
 {
 #if defined(_GNU_SOURCE) && !defined(__CYGWIN__) && !defined(__FreeBSD__) && \
-   !defined(__HAIKU__)
+   !defined(__HAIKU__) && !defined(__UCLIBC__)
    static locale_t loc = NULL;
    if (!loc) {
       loc = newlocale(LC_CTYPE_MASK, "C", NULL);