commit a779b610924d43dd21772b082849a6551f951b9a
author Jamie Madill <jmadill@chromium.org> Mon Jul 24 11:46:05 2017 -0400
committer Commit Bot <commit-bot@chromium.org> Mon Jul 24 22:04:49 2017 +0000
tree 503d3895b31721a677314c4476cc8256ca555f3f
parent cab92ee4b6eee9c81f10effe50f96fa6716f1d21

Smart caching of VAO input layout.

Don't recompute the cached attribute layout for a program if the
vertex array info hasn't changed. We can use the Serial class to
know when a vertex array has identical state.

BUG=angleproject:1156

Change-Id: Ia11f6ac268f63c3299f6d6d80c2866009cb8429c
Reviewed-on: https://chromium-review.googlesource.com/529768
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

src/libANGLE/renderer/d3d/ProgramD3D.cpp

diff --git a/src/libANGLE/renderer/d3d/ProgramD3D.cpp b/src/libANGLE/renderer/d3d/ProgramD3D.cpp
index c8cc0ca..38f7cf9 100644
--- a/src/libANGLE/renderer/d3d/ProgramD3D.cpp
+++ b/src/libANGLE/renderer/d3d/ProgramD3D.cpp
@@ -2389,8 +2389,14 @@
     }
 }
 
-void ProgramD3D::updateCachedInputLayout(const gl::State &state)
+void ProgramD3D::updateCachedInputLayout(Serial associatedSerial, const gl::State &state)
 {
+    if (mCurrentVertexArrayStateSerial == associatedSerial)
+    {
+        return;
+    }
+
+    mCurrentVertexArrayStateSerial = associatedSerial;
     mCachedInputLayout.clear();
     const auto &vertexAttributes = state.getVertexArray()->getVertexAttributes();