X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fmesa%2Fstate_tracker%2Fst_cb_viewport.c;h=d654ed6e771e681f564b0d2497013e6ed49a0ab9;hb=f26eb36e8bc17b0ff047f114538bd2485c6a52ea;hp=6adf3162c1e86ec6974b354b087be0b379c99990;hpb=6b722272709abed5468428da5d2c8951c84867d2;p=mesa.git

diff --git a/src/mesa/state_tracker/st_cb_viewport.c b/src/mesa/state_tracker/st_cb_viewport.c
index 6adf3162c1e..d654ed6e771 100644
--- a/src/mesa/state_tracker/st_cb_viewport.c
+++ b/src/mesa/state_tracker/st_cb_viewport.c
@@ -1,8 +1,8 @@
 /**************************************************************************
- * 
+ *
  * Copyright 2009 VMware, Inc.
  * All Rights Reserved.
- * 
+ *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the
  * "Software"), to deal in the Software without restriction, including
@@ -10,11 +10,11 @@
  * distribute, sub license, and/or sell copies of the Software, and to
  * permit persons to whom the Software is furnished to do so, subject to
  * the following conditions:
- * 
+ *
  * The above copyright notice and this permission notice (including the
  * next paragraph) shall be included in all copies or substantial portions
  * of the Software.
- * 
+ *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
@@ -22,27 +22,56 @@
  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- * 
+ *
  **************************************************************************/
 
 #include "main/glheader.h"
 #include "st_context.h"
-#include "st_public.h"
 #include "st_cb_viewport.h"
 
-#include "pipe/p_context.h"
-#include "pipe/p_inlines.h"
 #include "pipe/p_state.h"
 #include "pipe/p_defines.h"
+#include "util/u_atomic.h"
 
-static void st_viewport(GLcontext * ctx, GLint x, GLint y,
+/**
+ * Cast wrapper to convert a struct gl_framebuffer to an st_framebuffer.
+ * Return NULL if the struct gl_framebuffer is a user-created framebuffer.
+ * We'll only return non-null for window system framebuffers.
+ * Note that this function may fail.
+ */
+static INLINE struct st_framebuffer *
+st_ws_framebuffer(struct gl_framebuffer *fb)
+{
+   /* FBO cannot be casted.  See st_new_framebuffer */
+   if (fb && _mesa_is_winsys_fbo(fb))
+      return (struct st_framebuffer *) fb;
+   return NULL;
+}
+
+static void st_viewport(struct gl_context * ctx, GLint x, GLint y,
                         GLsizei width, GLsizei height)
 {
    struct st_context *st = ctx->st;
+   struct st_framebuffer *stdraw;
+   struct st_framebuffer *stread;
+
+   if (!st->invalidate_on_gl_viewport)
+      return;
+
+   /*
+    * Normally we'd want the state tracker manager to mark the drawables
+    * invalid only when needed. This will force the state tracker manager
+    * to revalidate the drawable, rather than just update the context with
+    * the latest cached drawable info.
+    */
+
+   stdraw = st_ws_framebuffer(st->ctx->DrawBuffer);
+   stread = st_ws_framebuffer(st->ctx->ReadBuffer);
 
-   if (st->pipe->winsys)
-      st->pipe->winsys->update_buffer( st->pipe->winsys,
-                                       st->pipe->priv );
+   if (stdraw && stdraw->iface)
+      stdraw->iface_stamp = p_atomic_read(&stdraw->iface->stamp) - 1;
+   if (stread && stread != stdraw && stread->iface)
+      stread->iface_stamp = p_atomic_read(&stread->iface->stamp) - 1;
 }
 
 void st_init_viewport_functions(struct dd_function_table *functions)