cc/GeometryBinding.h

   1 // Copyright 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef GeometryBinding_h
   6 #define GeometryBinding_h
   7
   8 #include "FloatRect.h"
   9
  10 #if USE(ACCELERATED_COMPOSITING)
  11
  12 namespace WebKit {
  13 class WebGraphicsContext3D;
  14 }
  15
  16 namespace WebCore {
  17
  18 class GeometryBinding {
  19 public:
  20     GeometryBinding(WebKit::WebGraphicsContext3D*, const FloatRect& quadVertexRect);
  21     ~GeometryBinding();
  22
  23     bool initialized() const { return m_initialized; }
  24
  25     WebKit::WebGraphicsContext3D* context() const { return m_context; }
  26     unsigned quadVerticesVbo() const { return m_quadVerticesVbo; }
  27     unsigned quadElementsVbo() const { return m_quadElementsVbo; }
  28
  29     void prepareForDraw();
  30
  31     // All layer shaders share the same attribute locations for the vertex
  32     // positions and texture coordinates. This allows switching shaders without
  33     // rebinding attribute arrays.
  34     static int positionAttribLocation() { return 0; }
  35     static int texCoordAttribLocation() { return 1; }
  36
  37 private:
  38     WebKit::WebGraphicsContext3D* m_context;
  39     unsigned m_quadVerticesVbo;
  40     unsigned m_quadElementsVbo;
  41     bool m_initialized;
  42 };
  43
  44 } // namespace WebCore
  45
  46 #endif // USE(ACCELERATED_COMPOSITING)
  47
  48 #endif