xserver xcb-proto mesa pixman xkeyboard-config git update 7 May 2014

xserver          commit a5b9757142a2ab471ca26651dce9cc5f5e351f3d
libxcb           commit d978a4f69b30b630f28d07f1003cf290284d24d8
libxcb/xcb-proto commit 389889e2f95af19e7fc7ac89e7faeb2f28652415
xkeyboard-config commit 3e54f31b1f118f00c240f59d72d7ddb685c6db79
libX11           commit 8be4610939b833587954957f5963eb4191b43d19
libXdmcp         commit 089081dca4ba3598c6f9bf401c029378943b5854
libXext          commit 11aad96bd689d54156064d2e81213dc827a689d1
libfontenc       commit 0037a42107b952c9d903719615747e760e4e7247
libXinerama      commit edd95182b26eb5d576d4878c559e0f17dddaa909
libXau           commit 1e4635be11154dd8262f37b379511bd627defa2a
xkbcomp          commit d4e02a09258063c6d024c3ccd42d6b22212e6e18
pixman           commit 91f32ce961bc85f98b3372b95681ad8918d24b18
xextproto        commit 66afec3f49e8eb0d4c2e9af7088fc3116d4bafd7
randrproto       commit a4a6694c059d74247c16527eef4a0ec9f56bbef6
glproto          commit f84853d97d5749308992412a215fa518b6536eb3
mkfontscale      commit 399db42a151687f1181ae23d28a76d31125a2853
xwininfo         commit ba0d1b0da21d2dbdd81098ed5778f3792b472e13
libXft           commit 4acfdaf95adb0a05c2a25550bdde036c865902f4
libXmu           commit 22d9c590901e121936f50dee97dc60c4f7defb63
libxtrans        commit a57a7f62242e1ea972b81414741729bf3dbae0a4
fontconfig       commit 81664fe54f117e4781fda5a30429b51858302e91
mesa             commit 9ced3fc649ec04710a5f5c855bfb582b898cff83

1 files changed, 16 insertions, 23 deletions

diff --git a/mesalib/src/glsl/lower_packed_varyings.cpp b/mesalib/src/glsl/lower_packed_varyings.cpp
index 8c1b8850b..e8654748f 100644
--- a/mesalib/src/glsl/lower_packed_varyings.cpp
+++ b/mesalib/src/glsl/lower_packed_varyings.cpp
@@ -160,8 +160,7 @@ namespace {
 class lower_packed_varyings_visitor
 {
 public:
-   lower_packed_varyings_visitor(void *mem_ctx, unsigned location_base,
-                                 unsigned locations_used,
+   lower_packed_varyings_visitor(void *mem_ctx, unsigned locations_used,
                                  ir_variable_mode mode,
                                  unsigned gs_input_vertices,
                                  exec_list *out_instructions);
@@ -190,18 +189,10 @@ private:
    void * const mem_ctx;
 
    /**
-    * Location representing the first generic varying slot for this shader
-    * stage (e.g. VARYING_SLOT_VAR0 if we are packing vertex shader outputs).
-    * Varyings whose location is less than this value are assumed to
-    * correspond to special fixed function hardware, so they are not lowered.
-    */
-   const unsigned location_base;
-
-   /**
     * Number of generic varying slots which are used by this shader.  This is
     * used to allocate temporary intermediate data structures.  If any varying
     * used by this shader has a location greater than or equal to
-    * location_base + locations_used, an assertion will fire.
+    * VARYING_SLOT_VAR0 + locations_used, an assertion will fire.
     */
    const unsigned locations_used;
 
@@ -235,11 +226,9 @@ private:
 } /* anonymous namespace */
 
 lower_packed_varyings_visitor::lower_packed_varyings_visitor(
-      void *mem_ctx, unsigned location_base, unsigned locations_used,
-      ir_variable_mode mode, unsigned gs_input_vertices,
-      exec_list *out_instructions)
+      void *mem_ctx, unsigned locations_used, ir_variable_mode mode,
+      unsigned gs_input_vertices, exec_list *out_instructions)
    : mem_ctx(mem_ctx),
-     location_base(location_base),
      locations_used(locations_used),
      packed_varyings((ir_variable **)
                      rzalloc_array_size(mem_ctx, sizeof(*packed_varyings),
@@ -259,7 +248,7 @@ lower_packed_varyings_visitor::run(exec_list *instructions)
          continue;
 
       if (var->data.mode != this->mode ||
-          var->data.location < (int) this->location_base ||
+          var->data.location < VARYING_SLOT_VAR0 ||
           !this->needs_lowering(var))
          continue;
 
@@ -542,7 +531,7 @@ lower_packed_varyings_visitor::get_packed_varying_deref(
       unsigned location, ir_variable *unpacked_var, const char *name,
       unsigned vertex_index)
 {
-   unsigned slot = location - this->location_base;
+   unsigned slot = location - VARYING_SLOT_VAR0;
    assert(slot < locations_used);
    if (this->packed_varyings[slot] == NULL) {
       char *packed_name = ralloc_asprintf(this->mem_ctx, "packed:%s", name);
@@ -595,7 +584,12 @@ lower_packed_varyings_visitor::get_packed_varying_deref(
 bool
 lower_packed_varyings_visitor::needs_lowering(ir_variable *var)
 {
-   /* Things composed of vec4's don't need lowering.  Everything else does. */
+   /* Things composed of vec4's and varyings with explicitly assigned
+    * locations don't need lowering.  Everything else does.
+    */
+   if (var->data.explicit_location)
+      return false;
+
    const glsl_type *type = var->type;
    if (this->gs_input_vertices != 0) {
       assert(type->is_array());
@@ -654,9 +648,9 @@ lower_packed_varyings_gs_splicer::visit(ir_emit_vertex *ev)
 
 
 void
-lower_packed_varyings(void *mem_ctx, unsigned location_base,
-                      unsigned locations_used, ir_variable_mode mode,
-                      unsigned gs_input_vertices, gl_shader *shader)
+lower_packed_varyings(void *mem_ctx, unsigned locations_used,
+                      ir_variable_mode mode, unsigned gs_input_vertices,
+                      gl_shader *shader)
 {
    exec_list *instructions = shader->ir;
    ir_function *main_func = shader->symbols->get_function("main");
@@ -664,8 +658,7 @@ lower_packed_varyings(void *mem_ctx, unsigned location_base,
    ir_function_signature *main_func_sig
       = main_func->matching_signature(NULL, &void_parameters);
    exec_list new_instructions;
-   lower_packed_varyings_visitor visitor(mem_ctx, location_base,
-                                         locations_used, mode,
+   lower_packed_varyings_visitor visitor(mem_ctx, locations_used, mode,
                                          gs_input_vertices, &new_instructions);
    visitor.run(instructions);
    if (mode == ir_var_shader_out) {