glowF.glsl
上传用户:king477883
上传日期:2021-03-01
资源大小:9553k
文件大小:1k
- /**
- * @file glowF.glsl
- *
- * Copyright (c) 2007-$CurrentYear$, Linden Research, Inc.
- * $License$
- */
- uniform sampler2D diffuseMap;
- uniform float glowStrength;
- void main()
- {
- vec4 col = vec4(0.0, 0.0, 0.0, 0.0);
- // ATI compiler falls down on array initialization.
- float kern[8];
- kern[0] = 0.25; kern[1] = 0.5; kern[2] = 0.8; kern[3] = 1.0;
- kern[4] = 1.0; kern[5] = 0.8; kern[6] = 0.5; kern[7] = 0.25;
-
- col += kern[0] * texture2D(diffuseMap, gl_TexCoord[0].xy);
- col += kern[1] * texture2D(diffuseMap, gl_TexCoord[1].xy);
- col += kern[2] * texture2D(diffuseMap, gl_TexCoord[2].xy);
- col += kern[3] * texture2D(diffuseMap, gl_TexCoord[3].xy);
- col += kern[4] * texture2D(diffuseMap, gl_TexCoord[0].zw);
- col += kern[5] * texture2D(diffuseMap, gl_TexCoord[1].zw);
- col += kern[6] * texture2D(diffuseMap, gl_TexCoord[2].zw);
- col += kern[7] * texture2D(diffuseMap, gl_TexCoord[3].zw);
-
- gl_FragColor = vec4(col.rgb * glowStrength, col.a);
- }