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path: root/indra/newview/app_settings/shaders/class1/deferred/pointLightF.glsl
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Diffstat (limited to 'indra/newview/app_settings/shaders/class1/deferred/pointLightF.glsl')
-rw-r--r--indra/newview/app_settings/shaders/class1/deferred/pointLightF.glsl13
1 files changed, 12 insertions, 1 deletions
diff --git a/indra/newview/app_settings/shaders/class1/deferred/pointLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/pointLightF.glsl
index e99329bbf2..27863b0095 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/pointLightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/pointLightF.glsl
@@ -54,6 +54,17 @@ uniform vec2 screen_res;
uniform mat4 inv_proj;
uniform vec4 viewport;
+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;
@@ -84,7 +95,7 @@ void main()
}
vec3 norm = texture2DRect(normalMap, frag.xy).xyz;
- norm = (norm.xyz-0.5)*2.0; // unpack norm
+ norm = decode_normal(norm.xy); // unpack norm
float da = dot(norm, lv);
if (da < 0.0)
{