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
|
/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ANDROID_HWUI_VERTEX_H
#define ANDROID_HWUI_VERTEX_H
#include "Vector.h"
namespace android {
namespace uirenderer {
/**
* Simple structure to describe a vertex with a position and a texture.
*/
struct Vertex {
/**
* Fudge-factor used to disambiguate geometry pixel positioning.
*
* Used to offset lines and points to avoid ambiguous intersection with pixel centers (see
* Program::set()), and used to make geometry damage rect calculation conservative (see
* Rect::snapGeometryToPixelBoundaries())
*/
static const float gGeometryFudgeFactor = 0.0656f;
float x, y;
static inline void set(Vertex* vertex, float x, float y) {
vertex[0].x = x;
vertex[0].y = y;
}
static inline void set(Vertex* vertex, vec2 val) {
set(vertex, val.x, val.y);
}
static inline void copyWithOffset(Vertex* vertex, const Vertex& src, float x, float y) {
set(vertex, src.x + x, src.y + y);
}
}; // struct Vertex
/**
* Simple structure to describe a vertex with a position and texture UV.
*/
struct TextureVertex {
float x, y;
float u, v;
static inline void set(TextureVertex* vertex, float x, float y, float u, float v) {
vertex[0].x = x;
vertex[0].y = y;
vertex[0].u = u;
vertex[0].v = v;
}
static inline void setUV(TextureVertex* vertex, float u, float v) {
vertex[0].u = u;
vertex[0].v = v;
}
}; // struct TextureVertex
/**
* Simple structure to describe a vertex with a position, texture UV and ARGB color.
*/
struct ColorTextureVertex : TextureVertex {
float r, g, b, a;
static inline void set(ColorTextureVertex* vertex, float x, float y,
float u, float v, int color) {
TextureVertex::set(vertex, x, y, u, v);
const float a = ((color >> 24) & 0xff) / 255.0f;
vertex[0].r = a * ((color >> 16) & 0xff) / 255.0f;
vertex[0].g = a * ((color >> 8) & 0xff) / 255.0f;
vertex[0].b = a * ((color ) & 0xff) / 255.0f;
vertex[0].a = a;
}
}; // struct ColorTextureVertex
/**
* Simple structure to describe a vertex with a position and an alpha value.
*/
struct AlphaVertex : Vertex {
float alpha;
static inline void set(AlphaVertex* vertex, float x, float y, float alpha) {
Vertex::set(vertex, x, y);
vertex[0].alpha = alpha;
}
static inline void copyWithOffset(AlphaVertex* vertex, const AlphaVertex& src,
float x, float y) {
Vertex::set(vertex, src.x + x, src.y + y);
vertex[0].alpha = src.alpha;
}
static inline void setColor(AlphaVertex* vertex, float alpha) {
vertex[0].alpha = alpha;
}
}; // struct AlphaVertex
}; // namespace uirenderer
}; // namespace android
#endif // ANDROID_HWUI_VERTEX_H
|
