1 files changed, 56 insertions, 0 deletions
diff --git a/chromium/cc/output/gl_renderer_draw_cache.h b/chromium/cc/output/gl_renderer_draw_cache.h
new file mode 100644
index 00000000000..f8284184f0c
--- /dev/null
+++ b/chromium/cc/output/gl_renderer_draw_cache.h
@@ -0,0 +1,56 @@
+// Copyright 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CC_OUTPUT_GL_RENDERER_DRAW_CACHE_H_
+#define CC_OUTPUT_GL_RENDERER_DRAW_CACHE_H_
+
+#include <vector>
+
+#include "base/basictypes.h"
+#include "third_party/skia/include/core/SkColor.h"
+
+namespace cc {
+
+// Collects 4 floats at a time for easy upload to GL.
+struct Float4 {
+  float data[4];
+};
+
+// Collects 16 floats at a time for easy upload to GL.
+struct Float16 {
+  float data[16];
+};
+
+// A cache for storing textured quads to be drawn.  Stores the minimum required
+// data to tell if two back to back draws only differ in their transform. Quads
+// that only differ by transform may be coalesced into a single draw call.
+struct TexturedQuadDrawCache {
+  TexturedQuadDrawCache();
+  ~TexturedQuadDrawCache();
+
+  // Values tracked to determine if textured quads may be coalesced.
+  int program_id;
+  int resource_id;
+  bool needs_blending;
+  SkColor background_color;
+
+  // Information about the program binding that is required to draw.
+  int uv_xform_location;
+  int background_color_location;
+  int vertex_opacity_location;
+  int matrix_location;
+  int sampler_location;
+
+  // A cache for the coalesced quad data.
+  std::vector<Float4> uv_xform_data;
+  std::vector<float> vertex_opacity_data;
+  std::vector<Float16> matrix_data;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(TexturedQuadDrawCache);
+};
+
+}  // namespace cc
+
+#endif  // CC_OUTPUT_GL_RENDERER_DRAW_CACHE_H_