有些人非要跟我争辩什么SSAO有多难开发

oz01

其实随随便便一个山寨游戏都能做出来，烂大街的东西
而且目前正在被HBAO和HDAO取代
下面这是我用了2天时间随便搞的
左边开启SSAO，右边未开启SSAO

   
SSAO像素着色器代码：

1. #version 110
2. #extension GL_ARB_texture_rectangle : enable
3. uniform vec4 SSAOSet;
4. uniform sampler2DRect SSAOTex;
6. float readDepth( in vec2 coord ) {
7.     return SSAOSet.z/( 1.0- texture2DRect( SSAOTex, coord ).x * ( SSAOSet.w - SSAOSet.z ) /SSAOSet.w);   
8. }
11. float cDepths( in float depth1, in float depth2, in float depthm ,in float bais)
12. {
13.     float aoo= min(1.0,max(0.0,-(depth1+depth2-depthm*2.0)-0.5));
14.     aoo*=min(1.0,max(0.0,3.0*bais-abs(depth1-depth2)));
15.     return aoo;
16. }
17. void main(void)
18. {   
19.     vec2 texCoord=gl_FragCoord.xy;
20.     float depth = readDepth( texCoord );
21.     float depthMAX=SSAOSet.z/( 1.0- ( SSAOSet.w - SSAOSet.z ) /SSAOSet.w);   
22.     float pw = 1.0 ;
23.     float ph = 1.0 ;
26.    
27.     float aoscale=1.0;
28.     float dp1;
29.     float dp2;
30.     float aod = 0.0;
31.     float dpbais = 2.0;
32.    
33.    
34.     dp1=readDepth( vec2(texCoord.x+pw,texCoord.y+ph));
35.     dp2=readDepth( vec2(texCoord.x-pw,texCoord.y-ph));
36.     aod+=cDepths(dp1,dp2,depth,dpbais);
37.    
38.     dp1=readDepth( vec2(texCoord.x-pw,texCoord.y+ph));
39.     dp2=readDepth( vec2(texCoord.x+pw,texCoord.y-ph));
40.     aod+=cDepths(dp1,dp2,depth,dpbais);
41.    
42.     dp1=readDepth( vec2(texCoord.x+pw,texCoord.y));
43.     dp2=readDepth( vec2(texCoord.x-pw,texCoord.y));
44.     aod+=cDepths(dp1,dp2,depth,dpbais);
45.    
46.     dp1=readDepth( vec2(texCoord.x,texCoord.y+ph));
47.     dp2=readDepth( vec2(texCoord.x,texCoord.y-ph));
48.     aod+=cDepths(dp1,dp2,depth,dpbais);
51.    
52.     pw*=2.0;
53.     ph*=2.0;
54.     dpbais+=1.0;
55.     aoscale*=1.15;
56.    
57.     dp1=readDepth( vec2(texCoord.x+pw,texCoord.y+ph));
58.     dp2=readDepth( vec2(texCoord.x-pw,texCoord.y-ph));
59.     aod+=cDepths(dp1,dp2,depth,dpbais)/aoscale;
60.    
61.     dp1=readDepth( vec2(texCoord.x-pw,texCoord.y+ph));
62.     dp2=readDepth( vec2(texCoord.x+pw,texCoord.y-ph));
63.     aod+=cDepths(dp1,dp2,depth,dpbais)/aoscale;
65.     dp1=readDepth( vec2(texCoord.x+pw,texCoord.y));
66.     dp2=readDepth( vec2(texCoord.x-pw,texCoord.y));
67.     aod+=cDepths(dp1,dp2,depth,dpbais)/aoscale;
68.    
69.     dp1=readDepth( vec2(texCoord.x,texCoord.y+ph));
70.     dp2=readDepth( vec2(texCoord.x,texCoord.y-ph));
71.     aod+=cDepths(dp1,dp2,depth,dpbais)/aoscale;
72.    
73.     pw*=2.0;
74.     ph*=2.0;
75.     dpbais+=1.0;
76.     aoscale*=1.15;
77.    
78.     dp1=readDepth( vec2(texCoord.x+pw,texCoord.y+ph));
79.     dp2=readDepth( vec2(texCoord.x-pw,texCoord.y-ph));
80.     aod+=cDepths(dp1,dp2,depth,dpbais)/aoscale;
81.    
82.     dp1=readDepth( vec2(texCoord.x-pw,texCoord.y+ph));
83.     dp2=readDepth( vec2(texCoord.x+pw,texCoord.y-ph));
84.     aod+=cDepths(dp1,dp2,depth,dpbais)/aoscale;
85.    
86.     dp1=readDepth( vec2(texCoord.x+pw,texCoord.y));
87.     dp2=readDepth( vec2(texCoord.x-pw,texCoord.y));
88.     aod+=cDepths(dp1,dp2,depth,dpbais)/aoscale;
89.    
90.     dp1=readDepth( vec2(texCoord.x,texCoord.y+ph));
91.     dp2=readDepth( vec2(texCoord.x,texCoord.y-ph));
92.     aod+=cDepths(dp1,dp2,depth,dpbais)/aoscale;
93.    
94.     pw*=2.0;
95.     ph*=2.0;
96.     dpbais+=1.0;
97.     aoscale*=1.15;
98.    
99.     dp1=readDepth( vec2(texCoord.x+pw,texCoord.y+ph));
100.     dp2=readDepth( vec2(texCoord.x-pw,texCoord.y-ph));
101.     aod+=cDepths(dp1,dp2,depth,dpbais)/aoscale;
102.    
103.     dp1=readDepth( vec2(texCoord.x-pw,texCoord.y+ph));
104.     dp2=readDepth( vec2(texCoord.x+pw,texCoord.y-ph));
105.     aod+=cDepths(dp1,dp2,depth,dpbais)/aoscale;
107.     dp1=readDepth( vec2(texCoord.x+pw,texCoord.y));
108.     dp2=readDepth( vec2(texCoord.x-pw,texCoord.y));
109.     aod+=cDepths(dp1,dp2,depth,dpbais)/aoscale;
110.    
111.     dp1=readDepth( vec2(texCoord.x,texCoord.y+ph));
112.     dp2=readDepth( vec2(texCoord.x,texCoord.y-ph));
113.     aod+=cDepths(dp1,dp2,depth,dpbais)/aoscale;
114.    
115.     if(depthMAX*0.225<depth)
116.     aod=0.0;
117.     gl_FragColor = vec4(0.0,0.0,0.0,aod/16.0) ;
118. }

复制代码

chri

刷出图了....

Yurita

oz巨巨万岁！！！

roadcross

红叉*2

itomakoto

没看错吧搞这东西需要两天？lz一定是家里网速很慢下载vs用了一天半吧

roadcross

引用第4楼itomakoto于2011-11-17 14:44发表的  :
没看错吧搞这东西需要两天？lz一定是家里网速很慢下载vs用了一天半吧

你做出来一个试试看
无论你是直接用深度渲染缓冲还是另外渲染一个Zpos浮点纹理都行