i915g/winsys: buffer validation support

v2: Add the batch bo to the libdrm validation lost, for otherwise
libdrm won't take previously used buffers into account.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 12 insertions, 0 deletions

diff --git a/src/gallium/drivers/i915/i915_winsys.h b/src/gallium/drivers/i915/i915_winsys.h
index e915a886c9..4ac2f5b977 100644
--- a/src/gallium/drivers/i915/i915_winsys.h
+++ b/src/gallium/drivers/i915/i915_winsys.h
@@ -95,6 +95,18 @@ struct i915_winsys {
       (*batchbuffer_create)(struct i915_winsys *iws);
 
    /**
+    * Validate buffers for usage in this batchbuffer.
+    * Does space-checking and asorted other book-keeping.
+    *
+    * @batch
+    * @buffers array to buffers to validate
+    * @num_of_buffers size of the passed array
+    */
+   boolean (*validate_buffers)(struct i915_winsys_batchbuffer *batch,
+	 		       struct i915_winsys_buffer **buffers,
+			       int num_of_buffers);
+
+   /**
     * Emit a relocation to a buffer.
     * Target position in batchbuffer is the same as ptr.
     *