postgiF.glsl
上传用户:king477883
上传日期:2021-03-01
资源大小:9553k
文件大小:1k
- /**
- * @file postgiF.glsl
- *
- * Copyright (c) 2007-$CurrentYear$, Linden Research, Inc.
- * $License$
- */
- #extension GL_ARB_texture_rectangle : enable
- uniform sampler2DRect depthMap;
- uniform sampler2DRect normalMap;
- uniform sampler2DRect giLightMap;
- uniform sampler2D noiseMap;
- uniform sampler2D giMip;
- uniform sampler2DRect edgeMap;
- uniform vec2 delta;
- uniform float kern_scale;
- uniform float gi_edge_weight;
- uniform float gi_blur_brightness;
- varying vec2 vary_fragcoord;
- void main()
- {
- vec2 dlt = kern_scale*delta;
- float defined_weight = 0.0;
- vec3 col = vec3(0.0);
-
- float e = 1.0;
-
- for (int i = 1; i < 8; i++)
- {
- vec2 tc = vary_fragcoord.xy + float(i) * dlt;
-
- e = max(e, 0.0);
- float wght = e;
-
- col += texture2DRect(giLightMap, tc).rgb*wght;
- defined_weight += wght;
-
- e *= e;
- e -=(texture2DRect(edgeMap, tc.xy-dlt*0.25).a+
- texture2DRect(edgeMap, tc.xy+dlt*0.25).a)*gi_edge_weight;
- }
- e = 1.0;
-
- for (int i = 1; i < 8; i++)
- {
- vec2 tc = vary_fragcoord.xy - float(i) * dlt;
-
- e = max(e,0.0);
- float wght = e;
-
- col += texture2DRect(giLightMap, tc).rgb*wght;
- defined_weight += wght;
-
- e *= e;
- e -= (texture2DRect(edgeMap, tc.xy-dlt*0.25).a+
- texture2DRect(edgeMap, tc.xy+dlt*0.25).a)*gi_edge_weight;
-
- }
-
- col /= max(defined_weight, 0.01);
- gl_FragColor.rgb = col * gi_blur_brightness;
- }