Merge remote-tracking branch 'origin/released'

Conflicts:
	mesalib/src/mesa/drivers/dri/common/dri_util.c

5 files changed, 22 insertions, 10 deletions

diff --git a/mesalib/src/glsl/ast_to_hir.cpp b/mesalib/src/glsl/ast_to_hir.cpp
index 0128b3f4e..f230a70a3 100644
--- a/mesalib/src/glsl/ast_to_hir.cpp
+++ b/mesalib/src/glsl/ast_to_hir.cpp
@@ -3078,7 +3078,7 @@ validate_identifier(const char *identifier, YYLTYPE loc,
     *   OpenGL, and may not be declared in a shader as either a
     *   variable or a function."
     */
-   if (strncmp(identifier, "gl_", 3) == 0) {
+   if (is_gl_identifier(identifier)) {
       _mesa_glsl_error(&loc, state,
                        "identifier `%s' uses reserved `gl_' prefix",
                        identifier);
@@ -3651,11 +3651,15 @@ ast_declarator_list::hir(exec_list *instructions,
        * instruction stream.
        */
       exec_list initializer_instructions;
+
+      /* Examine var name here since var may get deleted in the next call */
+      bool var_is_gl_id = is_gl_identifier(var->name);
+
       ir_variable *earlier =
          get_variable_being_redeclared(var, decl->get_location(), state,
                                        false /* allow_all_redeclarations */);
       if (earlier != NULL) {
-         if (strncmp(var->name, "gl_", 3) == 0 &&
+         if (var_is_gl_id &&
              earlier->data.how_declared == ir_var_declared_in_block) {
             _mesa_glsl_error(&loc, state,
                              "`%s' has already been redeclared using "
@@ -5399,7 +5403,7 @@ ast_interface_block::hir(exec_list *instructions,
             ir_variable *earlier =
                get_variable_being_redeclared(var, loc, state,
                                              true /* allow_all_redeclarations */);
-            if (strncmp(var->name, "gl_", 3) != 0 || earlier == NULL) {
+            if (!is_gl_identifier(var->name) || earlier == NULL) {
                _mesa_glsl_error(&loc, state,
                                 "redeclaration of gl_PerVertex can only "
                                 "include built-in variables");
@@ -5634,7 +5638,7 @@ detect_conflicting_assignments(struct _mesa_glsl_parse_state *state,
          gl_FragColor_assigned = true;
       else if (strcmp(var->name, "gl_FragData") == 0)
          gl_FragData_assigned = true;
-      else if (strncmp(var->name, "gl_", 3) != 0) {
+      else if (!is_gl_identifier(var->name)) {
          if (state->stage == MESA_SHADER_FRAGMENT &&
              var->data.mode == ir_var_shader_out) {
             user_defined_fs_output_assigned = true;
diff --git a/mesalib/src/glsl/ir.h b/mesalib/src/glsl/ir.h
index ef4a12d60..80609829e 100644
--- a/mesalib/src/glsl/ir.h
+++ b/mesalib/src/glsl/ir.h
@@ -2342,6 +2342,15 @@ prototype_string(const glsl_type *return_type, const char *name,
 const char *
 mode_string(const ir_variable *var);
 
+/**
+ * Built-in / reserved GL variables names start with "gl_"
+ */
+static inline bool
+is_gl_identifier(const char *s)
+{
+   return s && s[0] == 'g' && s[1] == 'l' && s[2] == '_';
+}
+
 extern "C" {
 #endif /* __cplusplus */
 
diff --git a/mesalib/src/glsl/ir_print_visitor.cpp b/mesalib/src/glsl/ir_print_visitor.cpp
index 0a7695ae1..c4a6f9c9f 100644
--- a/mesalib/src/glsl/ir_print_visitor.cpp
+++ b/mesalib/src/glsl/ir_print_visitor.cpp
@@ -146,7 +146,7 @@ print_type(FILE *f, const glsl_type *t)
       print_type(f, t->fields.array);
       fprintf(f, " %u)", t->length);
    } else if ((t->base_type == GLSL_TYPE_STRUCT)
-	      && (strncmp("gl_", t->name, 3) != 0)) {
+              && !is_gl_identifier(t->name)) {
       fprintf(f, "%s@%p", t->name, (void *) t);
    } else {
       fprintf(f, "%s", t->name);
@@ -430,7 +430,7 @@ void ir_print_visitor::visit(ir_constant *ir)
 	 case GLSL_TYPE_FLOAT:
             if (ir->value.f[i] == 0.0f)
                /* 0.0 == -0.0, so print with %f to get the proper sign. */
-               fprintf(f, "%.1f", ir->value.f[i]);
+               fprintf(f, "%f", ir->value.f[i]);
             else if (fabs(ir->value.f[i]) < 0.000001f)
                fprintf(f, "%a", ir->value.f[i]);
             else if (fabs(ir->value.f[i]) > 1000000.0f)
diff --git a/mesalib/src/glsl/link_uniforms.cpp b/mesalib/src/glsl/link_uniforms.cpp
index 95a0c1ac6..377fed64a 100644
--- a/mesalib/src/glsl/link_uniforms.cpp
+++ b/mesalib/src/glsl/link_uniforms.cpp
@@ -848,7 +848,7 @@ link_assign_uniform_locations(struct gl_shader_program *prog)
 
 	 /* FINISHME: Update code to process built-in uniforms!
 	  */
-	 if (strncmp("gl_", var->name, 3) == 0) {
+	 if (is_gl_identifier(var->name)) {
 	    uniform_size.num_shader_uniform_components +=
 	       var->type->component_slots();
 	    continue;
@@ -900,7 +900,7 @@ link_assign_uniform_locations(struct gl_shader_program *prog)
 
 	 /* FINISHME: Update code to process built-in uniforms!
 	  */
-	 if (strncmp("gl_", var->name, 3) == 0)
+	 if (is_gl_identifier(var->name))
 	    continue;
 
 	 parcel.set_and_process(prog, var);
diff --git a/mesalib/src/glsl/link_varyings.cpp b/mesalib/src/glsl/link_varyings.cpp
index 71998dfa9..686329857 100644
--- a/mesalib/src/glsl/link_varyings.cpp
+++ b/mesalib/src/glsl/link_varyings.cpp
@@ -77,8 +77,7 @@ cross_validate_types_and_qualifiers(struct gl_shader_program *prog,
        *     correspondence between the vertex language and the
        *     fragment language."
        */
-      if (!output->type->is_array()
-          || (strncmp("gl_", output->name, 3) != 0)) {
+      if (!output->type->is_array() || !is_gl_identifier(output->name)) {
          linker_error(prog,
                       "%s shader output `%s' declared as type `%s', "
                       "but %s shader input declared as type `%s'\n",