Mesa (master): st/mesa: enable stencil shader export extension if supported

[Dave Airlie]

Module: Mesa
Branch: master
Commit: 5f612f5c006ff006ad1d2b90fbfdcdbee271771e
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=5f612f5c006ff006ad1d2b90fbfdcdbee271771e

Author: Dave Airlie <airlied at redhat.com>
Date:   Wed Oct  6 09:36:56 2010 +1000

st/mesa: enable stencil shader export extension if supported

---

 src/mesa/state_tracker/st_extensions.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/src/mesa/state_tracker/st_extensions.c b/src/mesa/state_tracker/st_extensions.c
index 9b09601..0a9614f 100644
--- a/src/mesa/state_tracker/st_extensions.c
+++ b/src/mesa/state_tracker/st_extensions.c
@@ -435,4 +435,8 @@ void st_init_extensions(struct st_context *st)
    if (screen->get_param(screen, PIPE_CAP_DEPTH_CLAMP)) {
       ctx->Extensions.ARB_depth_clamp = GL_TRUE;
    }
+
+   if (screen->get_param(screen, PIPE_CAP_SHADER_STENCIL_EXPORT)) {
+      ctx->Extensions.ARB_shader_stencil_export = GL_TRUE;
+   }
 }