gallium: add texture barrier support to the interface and st/mesa (v2)

v2: change the gallium entry point to texture_barrier.

2 files changed, 15 insertions, 0 deletions

diff --git a/src/gallium/docs/source/context.rst b/src/gallium/docs/source/context.rst
index c6812cd309..b0229c70f2 100644
--- a/src/gallium/docs/source/context.rst
+++ b/src/gallium/docs/source/context.rst
@@ -408,6 +408,16 @@ The width0 is redefined to ``MAX2(width0, offset+size)``.
 
 
 
+.. _texture_barrier
+
+texture_barrier
+%%%%%%%%%%%%%%%
+
+This function flushes all pending writes to the currently-set surfaces and
+invalidates all read caches of the currently-set samplers.
+
+
+
 .. _pipe_transfer:
 
 PIPE_TRANSFER
diff --git a/src/gallium/include/pipe/p_context.h b/src/gallium/include/pipe/p_context.h
index 211f99f7ce..d8de3bac0e 100644
--- a/src/gallium/include/pipe/p_context.h
+++ b/src/gallium/include/pipe/p_context.h
@@ -390,6 +390,11 @@ struct pipe_context {
                                 struct pipe_resource *,
                                 unsigned offset,
                                 unsigned size);
+
+   /**
+    * Flush any pending framebuffer writes and invalidate texture caches.
+    */
+   void (*texture_barrier)(struct pipe_context *);
 };