Mesa (master): wgl: Implement ShareLists.

[Keith Whitwell]

Module: Mesa
Branch: master
Commit: 25a4156a8b0bc59f7d3f077526b7e3e350b072ea
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=25a4156a8b0bc59f7d3f077526b7e3e350b072ea

Author: José Fonseca <jfonseca at vmware.com>
Date:   Fri May  1 18:49:22 2009 +0100

wgl: Implement ShareLists.

---

 src/gallium/state_trackers/wgl/icd/stw_icd.c       |    2 +-
 .../state_trackers/wgl/shared/stw_context.c        |   24 ++++++++++++++++++++
 src/gallium/state_trackers/wgl/shared/stw_public.h |    2 +
 src/gallium/state_trackers/wgl/wgl/stw_wgl.c       |    7 +-----
 4 files changed, 28 insertions(+), 7 deletions(-)

diff --git a/src/gallium/state_trackers/wgl/icd/stw_icd.c b/src/gallium/state_trackers/wgl/icd/stw_icd.c
index b259ea9..62af765 100644
--- a/src/gallium/state_trackers/wgl/icd/stw_icd.c
+++ b/src/gallium/state_trackers/wgl/icd/stw_icd.c
@@ -562,7 +562,7 @@ DrvShareLists(
    if (DBG)
       debug_printf( "%s\n", __FUNCTION__ );
 
-   return FALSE;
+   return stw_share_lists(dhglrc1, dhglrc2);
 }
 
 BOOL APIENTRY
diff --git a/src/gallium/state_trackers/wgl/shared/stw_context.c b/src/gallium/state_trackers/wgl/shared/stw_context.c
index 473e330..e172f09 100644
--- a/src/gallium/state_trackers/wgl/shared/stw_context.c
+++ b/src/gallium/state_trackers/wgl/shared/stw_context.c
@@ -74,6 +74,30 @@ stw_copy_context(
    return ret;
 }
 
+BOOL
+stw_share_lists(
+   UINT_PTR hglrc1, 
+   UINT_PTR hglrc2 )
+{
+   struct stw_context *ctx1;
+   struct stw_context *ctx2;
+   BOOL ret = FALSE;
+
+   pipe_mutex_lock( stw_dev->mutex );
+   
+   ctx1 = stw_lookup_context_locked( hglrc1 );
+   ctx2 = stw_lookup_context_locked( hglrc2 );
+
+   if (ctx1 && ctx2 &&
+       ctx1->pfi == ctx2->pfi) { 
+      ret = _mesa_share_state(ctx2->st->ctx, ctx1->st->ctx);
+   }
+
+   pipe_mutex_unlock( stw_dev->mutex );
+   
+   return ret;
+}
+
 UINT_PTR
 stw_create_layer_context(
    HDC hdc,
diff --git a/src/gallium/state_trackers/wgl/shared/stw_public.h b/src/gallium/state_trackers/wgl/shared/stw_public.h
index 59d709a..7fe9cfb 100644
--- a/src/gallium/state_trackers/wgl/shared/stw_public.h
+++ b/src/gallium/state_trackers/wgl/shared/stw_public.h
@@ -37,6 +37,8 @@ BOOL stw_copy_context( UINT_PTR hglrcSrc,
 UINT_PTR stw_create_layer_context( HDC hdc, 
                                    int iLayerPlane );
 
+BOOL stw_share_lists( UINT_PTR hglrc1, UINT_PTR hglrc2 );
+
 BOOL stw_delete_context( UINT_PTR hglrc );
 
 BOOL
diff --git a/src/gallium/state_trackers/wgl/wgl/stw_wgl.c b/src/gallium/state_trackers/wgl/wgl/stw_wgl.c
index 30e42e0..a131292 100644
--- a/src/gallium/state_trackers/wgl/wgl/stw_wgl.c
+++ b/src/gallium/state_trackers/wgl/wgl/stw_wgl.c
@@ -186,12 +186,7 @@ wglShareLists(
    HGLRC hglrc1,
    HGLRC hglrc2 )
 {
-   (void) hglrc1;
-   (void) hglrc2;
-
-   assert( 0 );
-
-   return FALSE;
+   return stw_share_lists( (UINT_PTR)hglrc1, (UINT_PTR)hglrc2);;
 }
 
 WINGDIAPI BOOL APIENTRY