src/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, int id) {
  21     return make_scoped_ptr(new TextureLayerImpl(tree_impl, id));
  22   }
  23   virtual ~TextureLayerImpl();
  24
  25   virtual scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* layer_tree_impl)
  26       OVERRIDE;
  27   virtual void PushPropertiesTo(LayerImpl* layer) OVERRIDE;
  28
  29   virtual bool WillDraw(DrawMode draw_mode,
  30                         ResourceProvider* resource_provider) OVERRIDE;
  31   virtual void AppendQuads(RenderPass* render_pass,
  32                            const OcclusionTracker<LayerImpl>& occlusion_tracker,
  33                            AppendQuadsData* append_quads_data) OVERRIDE;
  34   virtual Region VisibleContentOpaqueRegion() const OVERRIDE;
  35   virtual void ReleaseResources() OVERRIDE;
  36
  37   // These setter methods don't cause any implicit damage, so the texture client
  38   // must explicitly invalidate if they intend to cause a visible change in the
  39   // layer's output.
  40   void SetTextureId(unsigned id);
  41   void SetPremultipliedAlpha(bool premultiplied_alpha);
  42   void SetBlendBackgroundColor(bool blend);
  43   void SetFlipped(bool flipped);
  44   void SetUVTopLeft(const gfx::PointF top_left);
  45   void SetUVBottomRight(const gfx::PointF bottom_right);
  46
  47   // 1--2
  48   // |  |
  49   // 0--3
  50   void SetVertexOpacity(const float vertex_opacity[4]);
  51
  52   void SetTextureMailbox(const TextureMailbox& mailbox,
  53                          scoped_ptr<SingleReleaseCallback> release_callback);
  54
  55  private:
  56   TextureLayerImpl(LayerTreeImpl* tree_impl, int id);
  57
  58   virtual const char* LayerTypeAsString() const OVERRIDE;
  59   void FreeTextureMailbox();
  60
  61   ResourceProvider::ResourceId external_texture_resource_;
  62   bool premultiplied_alpha_;
  63   bool blend_background_color_;
  64   bool flipped_;
  65   gfx::PointF uv_top_left_;
  66   gfx::PointF uv_bottom_right_;
  67   float vertex_opacity_[4];
  68   // This is a resource that's a GL copy of a software texture mailbox.
  69   scoped_ptr<ScopedResource> texture_copy_;
  70
  71   TextureMailbox texture_mailbox_;
  72   scoped_ptr<SingleReleaseCallback> release_callback_;
  73   bool own_mailbox_;
  74   bool valid_texture_copy_;
  75
  76   DISALLOW_COPY_AND_ASSIGN(TextureLayerImpl);
  77 };
  78
  79 }  // namespace cc
  80
  81 #endif  // CC_LAYERS_TEXTURE_LAYER_IMPL_H_