DisplayUtil.lua
6.23 KB
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
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
--region *.lua
--Date
--此文件由[BabeLua]插件自动生成
cc.exports.DisplayUtil = {}
function DisplayUtil.setSpriteGray(sp)
local vertDefaultSource = [[
attribute vec4 a_position;
attribute vec2 a_texCoord;
attribute vec4 a_color;
#ifdef GL_ES
varying lowp vec4 v_fragmentColor;
varying mediump vec2 v_texCoord;
#else
varying vec4 v_fragmentColor;
varying vec2 v_texCoord;
#endif
void main()
{
gl_Position = CC_PMatrix * a_position;
v_fragmentColor = a_color;
v_texCoord = a_texCoord;
}
]]
local pszFragSource = [[
#ifdef GL_ES
precision mediump float;
#endif
varying vec4 v_fragmentColor;
varying vec2 v_texCoord;
void main(void)
{
vec4 c = texture2D(CC_Texture0, v_texCoord);
gl_FragColor.xyz = vec3(0.4*c.r + 0.4*c.g +0.4*c.b);
gl_FragColor.w = c.w;
}
]]
local glProgram = cc.GLProgram:createWithByteArrays(vertDefaultSource,pszFragSource);
glProgram:bindAttribLocation(cc.ATTRIBUTE_NAME_POSITION,cc.VERTEX_ATTRIB_POSITION);
glProgram:bindAttribLocation(cc.ATTRIBUTE_NAME_COLOR,cc.VERTEX_ATTRIB_COLOR);
glProgram:bindAttribLocation(cc.ATTRIBUTE_NAME_TEX_COORD,cc.VERTEX_ATTRIB_FLAG_TEX_COORDS);
glProgram:link();
glProgram:updateUniforms();
sp:setGLProgram(glProgram);
end
function DisplayUtil.setSpriteOutline(sprite)
local vert = [[
attribute vec4 a_position;
attribute vec2 a_texCoord;
attribute vec4 a_color;
#ifdef GL_ES
varying lowp vec4 v_fragmentColor;
varying mediump vec2 v_texCoord;
#else
varying vec4 v_fragmentColor;
varying vec2 v_texCoord;
#endif
void main()
{
gl_Position = CC_PMatrix * a_position;
v_fragmentColor = a_color;
v_texCoord = a_texCoord;
}
]]
local frag = [[
#ifdef GL_ES
precision mediump float;
#endif
varying vec4 v_fragmentColor;
varying vec2 v_texCoord;
uniform vec2 my_size; // 纹理大小，纹理坐标范围为0-1
void main(void)
{
vec2 unit = 1.0 / my_size.xy; // 单位坐标
float step = 30.0; // 30度
float width = 5; // 描边宽度
float a_limit = 0.4; // 透明度限制，低于该值即视为透明
vec4 border = vec4(1.0,1.0,1.0,1.0);// 边框颜色
vec4 color1 = texture2D(CC_Texture0, v_texCoord);
gl_FragColor = color1;
if(color1.a >= a_limit)
{
return; // 非透明像素点不做处理
}
// 遍历四周所有像素点
for(float i = 0.0; i < 360.0; i += step)
{
// 当前角度的偏移坐标
vec2 offset = vec2(cos(i) * unit.x, sin(i) * unit.y) * width;
// 当前像素点偏移坐标下的像素点
vec4 color2 = texture2D(CC_Texture0, v_texCoord + offset);
if(color2.a >= a_limit)
{
gl_FragColor = border; // 不透明则将当前像素点设为边框
return;
}
}
}
]]
-- 1.创建glProgram
local glProgram = cc.GLProgram:createWithByteArrays(vert, frag)
-- 2.获取glProgramState
local glProgramState = cc.GLProgramState:getOrCreateWithGLProgram(glProgram)
-- 3.设置属性值
local size = sprite:getTexture():getContentSizeInPixels()
glProgramState:setUniformVec2("my_size", cc.p(size.width, size.height))
sprite:setGLProgram(glProgram)
sprite:setGLProgramState(glProgramState)
end
function DisplayUtil.removeSpriteShader(sp)
local vertDefaultSource = [[
attribute vec4 a_position;
attribute vec2 a_texCoord;
attribute vec4 a_color;
#ifdef GL_ES
varying lowp vec4 v_fragmentColor;
varying mediump vec2 v_texCoord;
#else
varying vec4 v_fragmentColor;
varying vec2 v_texCoord;
#endif
void main()
{
gl_Position = CC_PMatrix * a_position;
v_fragmentColor = a_color;
v_texCoord = a_texCoord;
}
]]
-- 移除置灰frag
local pszRemoveGrayShader = "#ifdef GL_ES \n" ..
"precision mediump float; \n" ..
"#endif \n" ..
"varying vec4 v_fragmentColor; \n" ..
"varying vec2 v_texCoord; \n" ..
"void main(void) \n" ..
"{ \n" ..
"gl_FragColor = texture2D(CC_Texture0, v_texCoord); \n" ..
"}"
local glProgram = cc.GLProgram:createWithByteArrays(vertDefaultSource,pszRemoveGrayShader);
glProgram:bindAttribLocation(cc.ATTRIBUTE_NAME_POSITION,cc.VERTEX_ATTRIB_POSITION);
glProgram:bindAttribLocation(cc.ATTRIBUTE_NAME_COLOR,cc.VERTEX_ATTRIB_COLOR);
glProgram:bindAttribLocation(cc.ATTRIBUTE_NAME_TEX_COORD,cc.VERTEX_ATTRIB_FLAG_TEX_COORDS);
glProgram:link();
glProgram:updateUniforms();
sp:setGLProgram(glProgram);
end
return DisplayUtil
--endregion