cc/geometry_binding.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 namespace WebKit {
  11 class WebGraphicsContext3D;
  12 }
  13
  14 namespace cc {
  15
  16 class GeometryBinding {
  17 public:
  18     GeometryBinding(WebKit::WebGraphicsContext3D*, const FloatRect& quadVertexRect);
  19     ~GeometryBinding();
  20
  21     bool initialized() const { return m_initialized; }
  22
  23     WebKit::WebGraphicsContext3D* context() const { return m_context; }
  24     unsigned quadVerticesVbo() const { return m_quadVerticesVbo; }
  25     unsigned quadElementsVbo() const { return m_quadElementsVbo; }
  26
  27     void prepareForDraw();
  28
  29     // All layer shaders share the same attribute locations for the vertex
  30     // positions and texture coordinates. This allows switching shaders without
  31     // rebinding attribute arrays.
  32     static int positionAttribLocation() { return 0; }
  33     static int texCoordAttribLocation() { return 1; }
  34
  35 private:
  36     WebKit::WebGraphicsContext3D* m_context;
  37     unsigned m_quadVerticesVbo;
  38     unsigned m_quadElementsVbo;
  39     bool m_initialized;
  40 };
  41
  42 } // namespace cc
  43
  44 #endif