diff options
Diffstat (limited to 'indra/newview/app_settings/shaders/class1/deferred/sunLightSSAOF.glsl')
-rwxr-xr-x[-rw-r--r--] | indra/newview/app_settings/shaders/class1/deferred/sunLightSSAOF.glsl | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/indra/newview/app_settings/shaders/class1/deferred/sunLightSSAOF.glsl b/indra/newview/app_settings/shaders/class1/deferred/sunLightSSAOF.glsl index bac74cbbef..c0a5865bef 100644..100755 --- a/indra/newview/app_settings/shaders/class1/deferred/sunLightSSAOF.glsl +++ b/indra/newview/app_settings/shaders/class1/deferred/sunLightSSAOF.glsl @@ -49,6 +49,23 @@ VARYING vec2 vary_fragcoord; uniform mat4 inv_proj; uniform vec2 screen_res; +vec2 encode_normal(vec3 n) +{ + float f = sqrt(8 * n.z + 8); + return n.xy / f + 0.5; +} + +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; +} + vec4 getPosition(vec2 pos_screen) { float depth = texture2DRect(depthMap, pos_screen.xy).r; @@ -123,7 +140,7 @@ void main() vec4 pos = getPosition(pos_screen); vec3 norm = texture2DRect(normalMap, pos_screen).xyz; - norm = (norm.xyz-0.5)*2.0; // unpack norm + norm = decode_normal(norm.xy); frag_color[0] = 1.0; frag_color[1] = calcAmbientOcclusion(pos, norm); |