Mesa (master): i965: Initialize inout_offset parameter to brw_search_cache( ).

[Paul Berry]

Module: Mesa
Branch: master
Commit: b8f13fbb856534cbc1345325b74ec47711493dd6
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=b8f13fbb856534cbc1345325b74ec47711493dd6

Author: Paul Berry <stereotype441 at gmail.com>
Date:   Wed Jul 24 09:24:51 2013 -0700

i965: Initialize inout_offset parameter to brw_search_cache().

Two callers of brw_search_cache() weren't initializing that function's
inout_offset parameter: brw_blorp_const_color_params::get_wm_prog()
and brw_blorp_const_color_params::get_wm_prog().

That's a benign problem, since the only effect of not initializing
inout_offset prior to calling brw_search_cache() is that the bit
corresponding to cache_id in brw->state.dirty.cache may not be set
reliably.  This is ok, since the cache_id's used by
brw_blorp_const_color_params::get_wm_prog() and
brw_blorp_blit_params::get_wm_prog() (BRW_BLORP_CONST_COLOR_PROG and
BRW_BLORP_BLIT_PROG, respectively) correspond to dirty bits that are
not used.

However, failing to initialize this parameter causes valgrind to
complain.  So let's go ahead and fix it to reduce valgrind noise.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=66779

Reviewed-by: Kenneth Graunke <kenneth at whitecape.org>

---

 src/mesa/drivers/dri/i965/brw_blorp_blit.cpp  |    2 +-
 src/mesa/drivers/dri/i965/brw_blorp_clear.cpp |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/mesa/drivers/dri/i965/brw_blorp_blit.cpp b/src/mesa/drivers/dri/i965/brw_blorp_blit.cpp
index 6610ef0..bce2d4d 100644
--- a/src/mesa/drivers/dri/i965/brw_blorp_blit.cpp
+++ b/src/mesa/drivers/dri/i965/brw_blorp_blit.cpp
@@ -2280,7 +2280,7 @@ uint32_t
 brw_blorp_blit_params::get_wm_prog(struct brw_context *brw,
                                    brw_blorp_prog_data **prog_data) const
 {
-   uint32_t prog_offset;
+   uint32_t prog_offset = 0;
    if (!brw_search_cache(&brw->cache, BRW_BLORP_BLIT_PROG,
                          &this->wm_prog_key, sizeof(this->wm_prog_key),
                          &prog_offset, prog_data)) {
diff --git a/src/mesa/drivers/dri/i965/brw_blorp_clear.cpp b/src/mesa/drivers/dri/i965/brw_blorp_clear.cpp
index 6588b7f..f26f39d 100644
--- a/src/mesa/drivers/dri/i965/brw_blorp_clear.cpp
+++ b/src/mesa/drivers/dri/i965/brw_blorp_clear.cpp
@@ -342,7 +342,7 @@ brw_blorp_const_color_params::get_wm_prog(struct brw_context *brw,
                                           brw_blorp_prog_data **prog_data)
    const
 {
-   uint32_t prog_offset;
+   uint32_t prog_offset = 0;
    if (!brw_search_cache(&brw->cache, BRW_BLORP_CONST_COLOR_PROG,
                          &this->wm_prog_key, sizeof(this->wm_prog_key),
                          &prog_offset, prog_data)) {