diff options
Diffstat (limited to 'indra/newview/app_settings/shaders/class1/deferred/blurLightF.glsl')
-rw-r--r-- | indra/newview/app_settings/shaders/class1/deferred/blurLightF.glsl | 35 |
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; } |