1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
|
/*
* Copyright 2010, The Android Open Source Project
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef BaseTileTexture_h
#define BaseTileTexture_h
#include "GLWebViewState.h"
#include "TextureInfo.h"
#include "TextureOwner.h"
#include "TilePainter.h"
#include <GLES2/gl2.h>
#include <SkBitmap.h>
class SkCanvas;
namespace WebCore {
class BaseTile;
class TextureTileInfo {
public:
TextureTileInfo()
: m_x(-1)
, m_y(-1)
, m_layerId(-1)
, m_scale(0)
, m_texture(0)
, m_painter(0)
, m_picture(0)
, m_inverted(false)
{
}
int m_x;
int m_y;
int m_layerId;
float m_scale;
TextureInfo* m_texture;
TilePainter* m_painter;
unsigned int m_picture;
bool m_inverted;
IntRect m_inval;
};
class BaseTileTexture {
public:
// This object is to be constructed on the consumer's thread and must have
// a width and height greater than 0.
BaseTileTexture(uint32_t w, uint32_t h);
virtual ~BaseTileTexture();
// allows consumer thread to assign ownership of the texture to the tile. It
// returns false if ownership cannot be transferred because the tile is busy
bool acquire(TextureOwner* owner, bool force = false);
bool release(TextureOwner* owner);
// set the texture owner if not busy. Return false if busy, true otherwise.
bool setOwner(TextureOwner* owner, bool force = false);
// private member accessor functions
TextureOwner* owner() { return m_owner; } // only used by the consumer thread
const SkSize& getSize() const { return m_size; }
bool readyFor(BaseTile* baseTile);
float scale();
// OpenGL ID of backing texture, 0 when not allocated
GLuint m_ownTextureId;
// these are used for dynamically (de)allocating backing graphics memory
void requireGLTexture();
void discardGLTexture();
void setOwnTextureTileInfoFromQueue(const TextureTileInfo* info);
TextureInfo* getTextureInfo() { return &m_ownTextureInfo; }
// Make sure the following pureColor getter/setter are only read/written
// in UI thread. Therefore no need for a lock.
void setPure(bool pure) { m_isPureColor = pure; }
bool isPureColor() {return m_isPureColor; }
void setPureColor(const Color& color) { m_pureColor = color; setPure(true); }
Color pureColor() { return m_pureColor; }
void draw(bool isLayer, TilePainter* painter, SkRect& rect,
float transparency);
private:
TextureTileInfo m_ownTextureTileInfo;
// TODO: Merge this info into the TextureTileInfo.
TextureInfo m_ownTextureInfo;
SkSize m_size;
SkBitmap::Config m_config;
// BaseTile owning the texture, only modified by UI thread
TextureOwner* m_owner;
// When the whole tile is single color, skip the transfer queue and draw
// it directly through shader.
bool m_isPureColor;
Color m_pureColor;
};
} // namespace WebCore
#endif // BaseTileTexture_h
|
