diff options
Diffstat (limited to 'indra/newview/app_settings/shaders/class1/environment/decodeNorm.glsl')
| -rw-r--r-- | indra/newview/app_settings/shaders/class1/environment/decodeNorm.glsl | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/indra/newview/app_settings/shaders/class1/environment/decodeNorm.glsl b/indra/newview/app_settings/shaders/class1/environment/decodeNorm.glsl new file mode 100644 index 0000000000..0abb1e43db --- /dev/null +++ b/indra/newview/app_settings/shaders/class1/environment/decodeNorm.glsl @@ -0,0 +1,11 @@ +vec3 decode_normal (vec2 enc) +{ + vec2 fenc = enc*4-2; + float f = dot(fenc,fenc); + float g = sqrt(1-f/4); + vec3 n; + n.xy = fenc*g; + n.z = 1-f/2; + return n; +} + |