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path: root/indra/newview/app_settings/shaders/class1/deferred/blurLightF.glsl
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-rw-r--r--indra/newview/app_settings/shaders/class1/deferred/blurLightF.glsl35
1 files changed, 20 insertions, 15 deletions
diff --git a/indra/newview/app_settings/shaders/class1/deferred/blurLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/blurLightF.glsl
index ea2df4b51a..d9f021b114 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/blurLightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/blurLightF.glsl
@@ -39,44 +39,49 @@ vec4 getPosition(vec2 pos_screen)
void main()
{
- vec3 norm = texture2DRect(normalMap, vary_fragcoord.xy).xyz;
+ vec2 tc = vary_fragcoord.xy;
+ vec3 norm = texture2DRect(normalMap, tc).xyz;
norm = vec3((norm.xy-0.5)*2.0,norm.z); // unpack norm
- vec3 pos = getPosition(vary_fragcoord.xy).xyz;
- vec4 ccol = texture2DRect(lightMap, vary_fragcoord.xy).rgba;
+ vec3 pos = getPosition(tc).xyz;
+ vec4 ccol = texture2DRect(lightMap, tc).rgba;
vec2 dlt = kern_scale * delta / (1.0+norm.xy*norm.xy);
-
dlt /= max(-pos.z*dist_factor, 1.0);
vec2 defined_weight = kern[0].xy; // special case the first (centre) sample's weight in the blur; we have to sample it anyway so we get it for 'free'
vec4 col = defined_weight.xyxx * ccol;
-
+
+ // relax tolerance according to distance to avoid speckling artifacts, as angles and distances are a lot more abrupt within a small screen area at larger distances
+ float pointplanedist_tolerance_pow2 = pos.z*pos.z*0.00005;
+
+ // perturb sampling origin slightly in screen-space to hide edge-ghosting artifacts where smoothing radius is quite large
+ tc += ( (mod(tc.x+tc.y,2) - 0.5) * kern[1].z * dlt * 0.5 );
+
for (int i = 1; i < 4; i++)
{
- vec2 tc = vary_fragcoord.xy + kern[i].z*dlt;
- vec3 samppos = getPosition(tc).xyz;
+ vec2 samptc = tc + kern[i].z*dlt;
+ vec3 samppos = getPosition(samptc).xyz;
float d = dot(norm.xyz, samppos.xyz-pos.xyz);// dist from plane
- if (d*d <= 0.003)
+ if (d*d <= pointplanedist_tolerance_pow2)
{
- col += texture2DRect(lightMap, tc)*kern[i].xyxx;
+ col += texture2DRect(lightMap, samptc)*kern[i].xyxx;
defined_weight += kern[i].xy;
}
}
for (int i = 1; i < 4; i++)
{
- vec2 tc = vary_fragcoord.xy - kern[i].z*dlt;
- vec3 samppos = getPosition(tc).xyz;
+ vec2 samptc = tc - kern[i].z*dlt;
+ vec3 samppos = getPosition(samptc).xyz;
float d = dot(norm.xyz, samppos.xyz-pos.xyz);// dist from plane
- if (d*d <= 0.003)
+ if (d*d <= pointplanedist_tolerance_pow2)
{
- col += texture2DRect(lightMap, tc)*kern[i].xyxx;
+ col += texture2DRect(lightMap, samptc)*kern[i].xyxx;
defined_weight += kern[i].xy;
}
}
-
-
col /= defined_weight.xyxx;
+ col.y *= col.y;
gl_FragColor = col;
}