From c0b4fb06b8b570b1999a0849797d3cb77f6ee5cd Mon Sep 17 00:00:00 2001
From: Brian Paul <brianp@vmware.com>
Date: Thu, 31 Dec 2009 14:44:40 -0700
Subject: [PATCH] gallium: pipe_context::render_condition() and mode flags

For conditional rendering predicated on results of an occlusion query.

If this driver function is NULL, conditional rendering is not supported by
the driver.
---
 src/gallium/include/pipe/p_context.h | 8 ++++++++
 src/gallium/include/pipe/p_defines.h | 9 +++++++++
 2 files changed, 17 insertions(+)

diff --git a/src/gallium/include/pipe/p_context.h b/src/gallium/include/pipe/p_context.h
index 6c06fb90270..60fa9cef824 100644
--- a/src/gallium/include/pipe/p_context.h
+++ b/src/gallium/include/pipe/p_context.h
@@ -84,6 +84,14 @@ struct pipe_context {
                                    unsigned count);
    /*@}*/
 
+   /**
+    * Predicate subsequent rendering on occlusion query result
+    * \param query  the query predicate, or NULL if no predicate
+    * \param mode  one of PIPE_COND_RENDER_x
+    */
+   void (*render_condition)( struct pipe_context *pipe,
+                             struct pipe_query *query,
+                             uint mode );
 
    /**
     * Query objects
diff --git a/src/gallium/include/pipe/p_defines.h b/src/gallium/include/pipe/p_defines.h
index 2cda408fecc..c3b1e634ffc 100644
--- a/src/gallium/include/pipe/p_defines.h
+++ b/src/gallium/include/pipe/p_defines.h
@@ -354,6 +354,15 @@ enum pipe_transfer_usage {
 #define PIPE_QUERY_TYPES                 3
 
 
+/**
+ * Conditional rendering modes
+ */
+#define PIPE_RENDER_COND_WAIT              0
+#define PIPE_RENDER_COND_NO_WAIT           1
+#define PIPE_RENDER_COND_BY_REGION_WAIT    2
+#define PIPE_RENDER_COND_BY_REGION_NO_WAIT 3
+
+
 /**
  * Point sprite coord modes
  */
-- 
2.30.2