cc/layers/texture_layer_impl.h

   1 // Copyright 2012 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 CC_LAYERS_TEXTURE_LAYER_IMPL_H_
   6 #define CC_LAYERS_TEXTURE_LAYER_IMPL_H_
   7
   8 #include <string>
   9
  10 #include "base/callback.h"
  11 #include "cc/base/cc_export.h"
  12 #include "cc/layers/layer_impl.h"
  13
  14 namespace cc {
  15 class SingleReleaseCallback;
  16 class ScopedResource;
  17
  18 class CC_EXPORT TextureLayerImpl : public LayerImpl {
  19  public:
  20   static scoped_ptr<TextureLayerImpl> Create(LayerTreeImpl* tree_impl,
  21                                              int id,
  22                                              bool uses_mailbox) {
  23     return make_scoped_ptr(new TextureLayerImpl(tree_impl, id, uses_mailbox));
  24   }
  25   virtual ~TextureLayerImpl();
  26
  27   virtual scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* layer_tree_impl)
  28       OVERRIDE;
  29   virtual void PushPropertiesTo(LayerImpl* layer) OVERRIDE;
  30
  31   virtual bool WillDraw(DrawMode draw_mode,
  32                         ResourceProvider* resource_provider) OVERRIDE;
  33   virtual void AppendQuads(QuadSink* quad_sink,
  34                            AppendQuadsData* append_quads_data) OVERRIDE;
  35   virtual void DidDraw(ResourceProvider* resource_provider) OVERRIDE;
  36   virtual Region VisibleContentOpaqueRegion() const OVERRIDE;
  37   virtual void ReleaseResources() OVERRIDE;
  38
  39   unsigned texture_id() const { return texture_id_; }
  40
  41   // These setter methods don't cause any implicit damage, so the texture client
  42   // must explicitly invalidate if they intend to cause a visible change in the
  43   // layer's output.
  44   void SetTextureId(unsigned id);
  45   void SetPremultipliedAlpha(bool premultiplied_alpha);
  46   void SetBlendBackgroundColor(bool blend);
  47   void SetFlipped(bool flipped);
  48   void SetUVTopLeft(const gfx::PointF top_left);
  49   void SetUVBottomRight(const gfx::PointF bottom_right);
  50
  51   // 1--2
  52   // |  |
  53   // 0--3
  54   void SetVertexOpacity(const float vertex_opacity[4]);
  55
  56   void SetTextureMailbox(const TextureMailbox& mailbox,
  57                          scoped_ptr<SingleReleaseCallback> release_callback);
  58
  59  private:
  60   TextureLayerImpl(LayerTreeImpl* tree_impl, int id, bool uses_mailbox);
  61
  62   virtual const char* LayerTypeAsString() const OVERRIDE;
  63   void FreeTextureMailbox();
  64
  65   unsigned texture_id_;
  66   ResourceProvider::ResourceId external_texture_resource_;
  67   bool premultiplied_alpha_;
  68   bool blend_background_color_;
  69   bool flipped_;
  70   gfx::PointF uv_top_left_;
  71   gfx::PointF uv_bottom_right_;
  72   float vertex_opacity_[4];
  73   // This is a resource that's a GL copy of a software texture mailbox.
  74   scoped_ptr<ScopedResource> texture_copy_;
  75
  76   TextureMailbox texture_mailbox_;
  77   scoped_ptr<SingleReleaseCallback> release_callback_;
  78   bool uses_mailbox_;
  79   bool own_mailbox_;
  80   bool valid_texture_copy_;
  81
  82   DISALLOW_COPY_AND_ASSIGN(TextureLayerImpl);
  83 };
  84
  85 }  // namespace cc
  86
  87 #endif  // CC_LAYERS_TEXTURE_LAYER_IMPL_H_