glsl: Clear the static values of builtin function profiles at release.

When releasing the builtin functions, we were just freeing the memory,
not telling the builtin function loader that we had freed its memory.
I wish I had done ARB_ES2_compatibility so we had regression testing
of this path.  Fixes segfault on changing video options in nexuiz.

2 files changed, 104 insertions, 152 deletions

diff --git a/src/glsl/builtin_function.cpp b/src/glsl/builtin_function.cpp
index 975e092807..d3484cbcd3 100644
--- a/src/glsl/builtin_function.cpp
+++ b/src/glsl/builtin_function.cpp
@@ -16759,183 +16759,117 @@ static const char *functions_for_EXT_texture_array_vert [] = {
    builtin_texture2DArray,
    builtin_texture2DArrayLod,
 };
+static gl_shader *builtin_profiles[10];
 
 void *builtin_mem_ctx = NULL;
 
 void
 _mesa_glsl_release_functions(void)
 {
-    talloc_free(builtin_mem_ctx);
-    builtin_mem_ctx = NULL;
+   talloc_free(builtin_mem_ctx);
+   builtin_mem_ctx = NULL;
+}
+
+static void
+_mesa_read_profile(struct _mesa_glsl_parse_state *state,
+		   exec_list *instructions,
+                   int profile_index,
+		   const char *prototypes,
+		   const char **functions,
+                   int count)
+{
+   gl_shader *sh = builtin_profiles[profile_index];
+
+   if (sh == NULL) {
+      sh = read_builtins(GL_VERTEX_SHADER, prototypes, functions, count);
+      talloc_steal(builtin_mem_ctx, sh);
+      builtin_profiles[profile_index] = sh;
+   }
+
+   import_prototypes(sh->ir, instructions, state->symbols, state);
+   state->builtins_to_link[state->num_builtins_to_link] = sh;
+   state->num_builtins_to_link++;
 }
 
 void
 _mesa_glsl_initialize_functions(exec_list *instructions,
                                 struct _mesa_glsl_parse_state *state)
 {
-   if (builtin_mem_ctx == NULL)
+   if (builtin_mem_ctx == NULL) {
       builtin_mem_ctx = talloc_init("GLSL built-in functions");
+      memset(&builtin_profiles, 0, sizeof(builtin_profiles));
+   }
 
    state->num_builtins_to_link = 0;
 
    if (state->target == fragment_shader && state->language_version == 110) {
-      static gl_shader *sh = NULL;
-      if (sh == NULL) {
-         sh = read_builtins(GL_VERTEX_SHADER,
-                            prototypes_for_110_frag,
-                            functions_for_110_frag,
-                            Elements(functions_for_110_frag ));
-         talloc_steal(builtin_mem_ctx, sh);
-      }
-
-      import_prototypes(sh->ir, instructions, state->symbols,
-                        state);
-      state->builtins_to_link[state->num_builtins_to_link] = sh;
-      state->num_builtins_to_link++;
+      _mesa_read_profile(state, instructions, 0,
+                         prototypes_for_110_frag,
+                         functions_for_110_frag,
+                         Elements(functions_for_110_frag));
    }
 
    if (state->target == vertex_shader && state->language_version == 110) {
-      static gl_shader *sh = NULL;
-      if (sh == NULL) {
-         sh = read_builtins(GL_VERTEX_SHADER,
-                            prototypes_for_110_vert,
-                            functions_for_110_vert,
-                            Elements(functions_for_110_vert ));
-         talloc_steal(builtin_mem_ctx, sh);
-      }
-
-      import_prototypes(sh->ir, instructions, state->symbols,
-                        state);
-      state->builtins_to_link[state->num_builtins_to_link] = sh;
-      state->num_builtins_to_link++;
+      _mesa_read_profile(state, instructions, 1,
+                         prototypes_for_110_vert,
+                         functions_for_110_vert,
+                         Elements(functions_for_110_vert));
    }
 
    if (state->target == fragment_shader && state->language_version == 120) {
-      static gl_shader *sh = NULL;
-      if (sh == NULL) {
-         sh = read_builtins(GL_VERTEX_SHADER,
-                            prototypes_for_120_frag,
-                            functions_for_120_frag,
-                            Elements(functions_for_120_frag ));
-         talloc_steal(builtin_mem_ctx, sh);
-      }
-
-      import_prototypes(sh->ir, instructions, state->symbols,
-                        state);
-      state->builtins_to_link[state->num_builtins_to_link] = sh;
-      state->num_builtins_to_link++;
+      _mesa_read_profile(state, instructions, 2,
+                         prototypes_for_120_frag,
+                         functions_for_120_frag,
+                         Elements(functions_for_120_frag));
    }
 
    if (state->target == vertex_shader && state->language_version == 120) {
-      static gl_shader *sh = NULL;
-      if (sh == NULL) {
-         sh = read_builtins(GL_VERTEX_SHADER,
-                            prototypes_for_120_vert,
-                            functions_for_120_vert,
-                            Elements(functions_for_120_vert ));
-         talloc_steal(builtin_mem_ctx, sh);
-      }
-
-      import_prototypes(sh->ir, instructions, state->symbols,
-                        state);
-      state->builtins_to_link[state->num_builtins_to_link] = sh;
-      state->num_builtins_to_link++;
+      _mesa_read_profile(state, instructions, 3,
+                         prototypes_for_120_vert,
+                         functions_for_120_vert,
+                         Elements(functions_for_120_vert));
    }
 
    if (state->target == fragment_shader && state->language_version == 130) {
-      static gl_shader *sh = NULL;
-      if (sh == NULL) {
-         sh = read_builtins(GL_VERTEX_SHADER,
-                            prototypes_for_130_frag,
-                            functions_for_130_frag,
-                            Elements(functions_for_130_frag ));
-         talloc_steal(builtin_mem_ctx, sh);
-      }
-
-      import_prototypes(sh->ir, instructions, state->symbols,
-                        state);
-      state->builtins_to_link[state->num_builtins_to_link] = sh;
-      state->num_builtins_to_link++;
+      _mesa_read_profile(state, instructions, 4,
+                         prototypes_for_130_frag,
+                         functions_for_130_frag,
+                         Elements(functions_for_130_frag));
    }
 
    if (state->target == vertex_shader && state->language_version == 130) {
-      static gl_shader *sh = NULL;
-      if (sh == NULL) {
-         sh = read_builtins(GL_VERTEX_SHADER,
-                            prototypes_for_130_vert,
-                            functions_for_130_vert,
-                            Elements(functions_for_130_vert ));
-         talloc_steal(builtin_mem_ctx, sh);
-      }
-
-      import_prototypes(sh->ir, instructions, state->symbols,
-                        state);
-      state->builtins_to_link[state->num_builtins_to_link] = sh;
-      state->num_builtins_to_link++;
+      _mesa_read_profile(state, instructions, 5,
+                         prototypes_for_130_vert,
+                         functions_for_130_vert,
+                         Elements(functions_for_130_vert));
    }
 
    if (state->target == fragment_shader && state->ARB_texture_rectangle_enable) {
-      static gl_shader *sh = NULL;
-      if (sh == NULL) {
-         sh = read_builtins(GL_VERTEX_SHADER,
-                            prototypes_for_ARB_texture_rectangle_frag,
-                            functions_for_ARB_texture_rectangle_frag,
-                            Elements(functions_for_ARB_texture_rectangle_frag ));
-         talloc_steal(builtin_mem_ctx, sh);
-      }
-
-      import_prototypes(sh->ir, instructions, state->symbols,
-                        state);
-      state->builtins_to_link[state->num_builtins_to_link] = sh;
-      state->num_builtins_to_link++;
+      _mesa_read_profile(state, instructions, 6,
+                         prototypes_for_ARB_texture_rectangle_frag,
+                         functions_for_ARB_texture_rectangle_frag,
+                         Elements(functions_for_ARB_texture_rectangle_frag));
    }
 
    if (state->target == vertex_shader && state->ARB_texture_rectangle_enable) {
-      static gl_shader *sh = NULL;
-      if (sh == NULL) {
-         sh = read_builtins(GL_VERTEX_SHADER,
-                            prototypes_for_ARB_texture_rectangle_vert,
-                            functions_for_ARB_texture_rectangle_vert,
-                            Elements(functions_for_ARB_texture_rectangle_vert ));
-         talloc_steal(builtin_mem_ctx, sh);
-      }
-
-      import_prototypes(sh->ir, instructions, state->symbols,
-                        state);
-      state->builtins_to_link[state->num_builtins_to_link] = sh;
-      state->num_builtins_to_link++;
+      _mesa_read_profile(state, instructions, 7,
+                         prototypes_for_ARB_texture_rectangle_vert,
+                         functions_for_ARB_texture_rectangle_vert,
+                         Elements(functions_for_ARB_texture_rectangle_vert));
    }
 
    if (state->target == fragment_shader && state->EXT_texture_array_enable) {
-      static gl_shader *sh = NULL;
-      if (sh == NULL) {
-         sh = read_builtins(GL_VERTEX_SHADER,
-                            prototypes_for_EXT_texture_array_frag,
-                            functions_for_EXT_texture_array_frag,
-                            Elements(functions_for_EXT_texture_array_frag ));
-         talloc_steal(builtin_mem_ctx, sh);
-      }
-
-      import_prototypes(sh->ir, instructions, state->symbols,
-                        state);
-      state->builtins_to_link[state->num_builtins_to_link] = sh;
-      state->num_builtins_to_link++;
+      _mesa_read_profile(state, instructions, 8,
+                         prototypes_for_EXT_texture_array_frag,
+                         functions_for_EXT_texture_array_frag,
+                         Elements(functions_for_EXT_texture_array_frag));
    }
 
    if (state->target == vertex_shader && state->EXT_texture_array_enable) {
-      static gl_shader *sh = NULL;
-      if (sh == NULL) {
-         sh = read_builtins(GL_VERTEX_SHADER,
-                            prototypes_for_EXT_texture_array_vert,
-                            functions_for_EXT_texture_array_vert,
-                            Elements(functions_for_EXT_texture_array_vert ));
-         talloc_steal(builtin_mem_ctx, sh);
-      }
-
-      import_prototypes(sh->ir, instructions, state->symbols,
-                        state);
-      state->builtins_to_link[state->num_builtins_to_link] = sh;
-      state->num_builtins_to_link++;
+      _mesa_read_profile(state, instructions, 9,
+                         prototypes_for_EXT_texture_array_vert,
+                         functions_for_EXT_texture_array_vert,
+                         Elements(functions_for_EXT_texture_array_vert));
    }
 
 }
diff --git a/src/glsl/builtins/tools/generate_builtins.py b/src/glsl/builtins/tools/generate_builtins.py
index ab5b3777cb..5accc1b120 100755
--- a/src/glsl/builtins/tools/generate_builtins.py
+++ b/src/glsl/builtins/tools/generate_builtins.py
@@ -1,5 +1,5 @@
 #!/usr/bin/python
-# -*- coding: UTF-8 -*-
+# -*- coding: utf-8 -*-
 
 import re
 from glob import glob
@@ -168,27 +168,54 @@ read_builtins(GLenum target, const char *protos, const char **functions, unsigne
     write_function_definitions()
     write_profiles()
 
+    profiles = get_profile_list()
+
+    print 'static gl_shader *builtin_profiles[%d];' % len(profiles)
+
     print """
 void *builtin_mem_ctx = NULL;
 
 void
 _mesa_glsl_release_functions(void)
 {
-    talloc_free(builtin_mem_ctx);
-    builtin_mem_ctx = NULL;
+   talloc_free(builtin_mem_ctx);
+   builtin_mem_ctx = NULL;
+}
+
+static void
+_mesa_read_profile(struct _mesa_glsl_parse_state *state,
+		   exec_list *instructions,
+                   int profile_index,
+		   const char *prototypes,
+		   const char **functions,
+                   int count)
+{
+   gl_shader *sh = builtin_profiles[profile_index];
+
+   if (sh == NULL) {
+      sh = read_builtins(GL_VERTEX_SHADER, prototypes, functions, count);
+      talloc_steal(builtin_mem_ctx, sh);
+      builtin_profiles[profile_index] = sh;
+   }
+
+   import_prototypes(sh->ir, instructions, state->symbols, state);
+   state->builtins_to_link[state->num_builtins_to_link] = sh;
+   state->num_builtins_to_link++;
 }
 
 void
 _mesa_glsl_initialize_functions(exec_list *instructions,
                                 struct _mesa_glsl_parse_state *state)
 {
-   if (builtin_mem_ctx == NULL)
+   if (builtin_mem_ctx == NULL) {
       builtin_mem_ctx = talloc_init("GLSL built-in functions");
+      memset(&builtin_profiles, 0, sizeof(builtin_profiles));
+   }
 
    state->num_builtins_to_link = 0;
 """
 
-    profiles = get_profile_list()
+    i=0
     for (filename, profile) in profiles:
         if profile.endswith('_vert'):
             check = 'state->target == vertex_shader && '
@@ -202,21 +229,12 @@ _mesa_glsl_initialize_functions(exec_list *instructions,
             check += 'state->' + version + '_enable'
 
         print '   if (' + check + ') {'
-        print '      static gl_shader *sh = NULL;'
-        print '      if (sh == NULL) {'
-        print '         sh = read_builtins(GL_VERTEX_SHADER,'
-        print '                            prototypes_for_' + profile + ','
-        print '                            functions_for_' + profile + ','
-        print '                            Elements(functions_for_' + profile,
-        print '));'
-        print '         talloc_steal(builtin_mem_ctx, sh);'
-        print '      }'
-        print
-        print '      import_prototypes(sh->ir, instructions, state->symbols,'
-        print '                        state);'
-        print '      state->builtins_to_link[state->num_builtins_to_link] = sh;'
-        print '      state->num_builtins_to_link++;'
+        print '      _mesa_read_profile(state, instructions, %d,' % i
+        print '                         prototypes_for_' + profile + ','
+        print '                         functions_for_' + profile + ','
+        print '                         Elements(functions_for_' + profile + '));'
         print '   }'
         print
+        i = i + 1
     print '}'