glx: Implement __DRI_BACKGROUND_CALLABLE

v2: Marek: Add DRI3 support.

v3: (Timothy Arceri) use C99 initializers.

Acked-by: Timothy Arceri <[email protected]>
Acked-by: Marek Olšák <[email protected]>
Tested-by: Dieter Nützel <[email protected]>
Tested-by: Mike Lothian <[email protected]>

2 files changed, 30 insertions, 1 deletions

diff --git a/src/glx/dri2_glx.c b/src/glx/dri2_glx.c
index 5b93f2f6f49..145f44d6e8c 100644
--- a/src/glx/dri2_glx.c
+++ b/src/glx/dri2_glx.c
@@ -74,7 +74,7 @@ struct dri2_display
 
    __glxHashTable *dri2Hash;
 
-   const __DRIextension *loader_extensions[4];
+   const __DRIextension *loader_extensions[5];
 };
 
 struct dri2_drawable
@@ -946,6 +946,13 @@ dri2GetSwapInterval(__GLXDRIdrawable *pdraw)
   return priv->swap_interval;
 }
 
+static void
+driSetBackgroundContext(void *loaderPrivate)
+{
+   struct dri2_context *pcp = (struct dri2_context *) loaderPrivate;
+   __glXSetCurrentContext(&pcp->base);
+}
+
 static const __DRIdri2LoaderExtension dri2LoaderExtension = {
    .base = { __DRI_DRI2_LOADER, 3 },
 
@@ -966,6 +973,12 @@ static const __DRIuseInvalidateExtension dri2UseInvalidate = {
    .base = { __DRI_USE_INVALIDATE, 1 }
 };
 
+static const __DRIbackgroundCallableExtension driBackgroundCallable = {
+   .base = { __DRI_BACKGROUND_CALLABLE, 1 },
+
+   .setBackgroundContext    = driSetBackgroundContext,
+};
+
 _X_HIDDEN void
 dri2InvalidateBuffers(Display *dpy, XID drawable)
 {
@@ -1395,6 +1408,8 @@ dri2CreateDisplay(Display * dpy)
    
    pdp->loader_extensions[i++] = &dri2UseInvalidate.base;
 
+   pdp->loader_extensions[i++] = &driBackgroundCallable.base;
+
    pdp->loader_extensions[i++] = NULL;
 
    pdp->dri2Hash = __glxHashCreate();
diff --git a/src/glx/dri3_glx.c b/src/glx/dri3_glx.c
index 9c15395adf8..e1dc5aa4a83 100644
--- a/src/glx/dri3_glx.c
+++ b/src/glx/dri3_glx.c
@@ -496,6 +496,13 @@ dri3_flush_front_buffer(__DRIdrawable *driDrawable, void *loaderPrivate)
    loader_dri3_wait_gl(draw);
 }
 
+static void
+dri_set_background_context(void *loaderPrivate)
+{
+   struct dri3_context *pcp = (struct dri3_context *)loaderPrivate;
+   __glXSetCurrentContext(&pcp->base);
+}
+
 /* The image loader extension record for DRI3
  */
 static const __DRIimageLoaderExtension imageLoaderExtension = {
@@ -509,9 +516,16 @@ const __DRIuseInvalidateExtension dri3UseInvalidate = {
    .base = { __DRI_USE_INVALIDATE, 1 }
 };
 
+static const __DRIbackgroundCallableExtension driBackgroundCallable = {
+   .base = { __DRI_BACKGROUND_CALLABLE, 1 },
+
+   .setBackgroundContext = dri_set_background_context,
+};
+
 static const __DRIextension *loader_extensions[] = {
    &imageLoaderExtension.base,
    &dri3UseInvalidate.base,
+   &driBackgroundCallable.base,
    NULL
 };