From: José Fonseca <jfonseca@vmware.com>
Date: Sat, 24 Apr 2010 09:33:44 +0000 (+0100)
Subject: cso_cache: Ensure irrelevant state of the blend state is zeroed.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=53499c64b212c68527f84f5e672cdfc95935f643;p=mesa.git

cso_cache: Ensure irrelevant state of the blend state is zeroed.

Otherwise drivers that bake the full blend state in a key end up having
uninitialized memory in their key.

Courtesy of valgrind.
---

diff --git a/src/gallium/auxiliary/cso_cache/cso_context.c b/src/gallium/auxiliary/cso_cache/cso_context.c
index 6fd4bd36428..6d0b4207986 100644
--- a/src/gallium/auxiliary/cso_cache/cso_context.c
+++ b/src/gallium/auxiliary/cso_cache/cso_context.c
@@ -349,6 +349,7 @@ enum pipe_error cso_set_blend(struct cso_context *ctx,
       if (!cso)
          return PIPE_ERROR_OUT_OF_MEMORY;
 
+      memset(&cso->state, 0, sizeof cso->state);
       memcpy(&cso->state, templ, key_size);
       cso->data = ctx->pipe->create_blend_state(ctx->pipe, &cso->state);
       cso->delete_state = (cso_state_callback)ctx->pipe->delete_blend_state;