diff --git a/indra/newview/app_settings/shaders/class1/deferred/multiPointLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/multiPointLightF.glsl
index ad50690c02609dc8a8e37e2309689741e4e7eac8..c11298aadd7a1db390a6d9c7c3e03c50ab9ddf1f 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/multiPointLightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/multiPointLightF.glsl
@@ -110,14 +110,18 @@ void main()
{
lv = normalize(lv);
da = dot(norm, lv);
-
+
float fa = light_col[i].a+1.0;
float dist_atten = clamp(1.0-(dist2-1.0*(1.0-fa))/fa, 0.0, 1.0);
+
dist_atten *= noise;
float lit = da * dist_atten;
-
+
+ lit = pow(lit,0.7);
+
vec3 col = light_col[i].rgb*lit*diff;
+
//vec3 col = vec3(dist2, light_col[i].a, lit);
if (spec.a > 0.0)
@@ -128,15 +132,16 @@ void main()
float nv = dot(norm, npos);
float vh = dot(npos, h);
float sa = nh;
- vec3 fres = spec.rgb + pow(1 - dot(h, npos), 5) * (1 - spec.rgb);
+ float fres = pow(1 - dot(h, npos), 5)*0.4+0.5;
+
float gtdenom = 2 * nh;
float gt = max(0, min(gtdenom * nv / vh, gtdenom * da / vh));
-
-
- if (sa > 0.0)
+
+ if (nh > 0.0)
{
- vec3 scol = (fres * texture2D(lightFunc, vec2(nh, spec.a)).r * gt) / (nh * da);
- col += lit*scol*light_col[i].rgb;
+ float scol = fres*texture2D(lightFunc, vec2(nh, spec.a)).r*gt/(nh*da);
+ col += lit*scol*light_col[i].rgb*spec.rgb;
+ //col += spec.rgb;
}
}
diff --git a/indra/newview/app_settings/shaders/class1/deferred/multiSpotLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/multiSpotLightF.glsl
index bff87cb6aac7499a1ae030a8b6fac365c9ee19e2..09d23db0967d145f52772efe235af55bf12b8cf4 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/multiSpotLightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/multiSpotLightF.glsl
@@ -40,6 +40,7 @@ uniform sampler2DRect normalMap;
uniform samplerCube environmentMap;
uniform sampler2D noiseMap;
uniform sampler2D projectionMap;
+uniform sampler2D lightFunc;
uniform mat4 proj_mat; //screen space to light space
uniform float proj_near; //near clip for projection
@@ -142,7 +143,7 @@ void main()
}
vec3 norm = texture2DRect(normalMap, frag.xy).xyz;
- norm = vec3((norm.xy-0.5)*2.0, norm.z);
+ norm = norm = (norm.xyz-0.5)*2.0;
norm = normalize(norm);
float l_dist = -dot(lv, proj_n);
@@ -190,6 +191,8 @@ void main()
vec3 lcol = color.rgb * plcol.rgb * plcol.a;
lit = da * dist_atten * noise;
+
+ lit = pow(lit, 0.7);
col = lcol*lit*diff_tex;
amb_da += (da*0.5)*proj_ambiance;
@@ -236,8 +239,28 @@ void main()
stc.x > 0.0 &&
stc.y > 0.0)
{
- vec4 scol = texture2DLodSpecular(projectionMap, stc.xy, proj_lod-spec.a*proj_lod);
- col += dist_atten*scol.rgb*color.rgb*scol.a*spec.rgb;
+
+ vec3 npos = -normalize(pos);
+ lv = pfinal-pos.xyz;
+ lv = normalize(lv);
+
+ vec3 h = normalize(lv+npos);
+ float nh = dot(norm, h);
+ float nv = dot(norm, npos);
+ float vh = dot(npos, h);
+ float sa = nh;
+ float fres = pow(1 - dot(h, npos), 5)*0.4+0.5;
+ float gtdenom = 2 * nh;
+ float gt = max(0,(min(gtdenom * nv / vh, gtdenom * da / vh)));
+
+ if (sa > 0.0)
+ {
+ float scol = fres * texture2D(lightFunc, vec2(nh, spec.a)).r * gt / (nh * da);
+ col += scol*color.rgb*texture2DLodSpecular(projectionMap, stc.xy, proj_lod-spec.a*proj_lod).rgb*spec.rgb;
+ }
+
+ //vec4 scol = texture2DLodSpecular(projectionMap, stc.xy, proj_lod-spec.a*proj_lod);
+ //col += dist_atten*scol.rgb*color.rgb*scol.a*spec.rgb;
}
}
}
diff --git a/indra/newview/app_settings/shaders/class1/deferred/pointLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/pointLightF.glsl
index 03b036375b510c9de5b6494ef095e34c0d3b0782..e99329bbf27db0d953f3b286370e053c4d2bd8ca 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/pointLightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/pointLightF.glsl
@@ -102,6 +102,8 @@ void main()
float dist_atten = clamp(1.0-(dist2-1.0*(1.0-fa))/fa, 0.0, 1.0);
float lit = da * dist_atten * noise;
+ lit = pow(lit, 0.7);
+
col = color.rgb*lit*col;
vec4 spec = texture2DRect(specularRect, frag.xy);
@@ -113,14 +115,14 @@ void main()
float nv = dot(norm, npos);
float vh = dot(npos, h);
float sa = nh;
- vec3 fres = spec.rgb + pow(1 - dot(h, npos), 5) * (1 - spec.rgb);
+ float fres = pow(1 - dot(h, npos), 5) * 0.4+0.5;
float gtdenom = 2 * nh;
float gt = max(0,(min(gtdenom * nv / vh, gtdenom * da / vh)));
- if (sa > 0.0)
+ if (nh > 0.0)
{
- vec3 scol = (fres * texture2D(lightFunc, vec2(nh, spec.a)).r * gt) / (nh * da);
- col += lit*scol*color.rgb;
+ float scol = fres*texture2D(lightFunc, vec2(nh, spec.a)).r*gt/(nh*da);
+ col += lit*scol*color.rgb*spec.rgb;
}
}
diff --git a/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl
index f50935c1a84195c0f46cc802fdad2d716104409c..437a06320e8a677a8ff3a890d277df61430fc42c 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl
@@ -280,6 +280,8 @@ void main()
float da = max(dot(norm.xyz, sun_dir.xyz), 0.0);
+ da = pow(da, 0.7);
+
vec4 diffuse = texture2DRect(diffuseRect, tc);
vec4 spec = texture2DRect(specularRect, vary_fragcoord.xy);
@@ -300,7 +302,7 @@ void main()
//
vec3 refnormpersp = normalize(reflect(pos.xyz, norm.xyz));
float sa = dot(refnormpersp, sun_dir.xyz);
- vec3 dumbshiny = vary_SunlitColor*(6 * texture2D(lightFunc, vec2(sa, spec.a)).r);
+ vec3 dumbshiny = vary_SunlitColor*(texture2D(lightFunc, vec2(sa, spec.a)).r);
// add the two types of shiny together
vec3 spec_contrib = dumbshiny * spec.rgb;
diff --git a/indra/newview/app_settings/shaders/class1/deferred/spotLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/spotLightF.glsl
index cca63872de2142faa13bce99ad2b4e703e1a73bc..2f18e1a13d4a9af13d62e009698715e99d9bdb33 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/spotLightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/spotLightF.glsl
@@ -41,6 +41,8 @@ uniform sampler2DRect normalMap;
uniform samplerCube environmentMap;
uniform sampler2D noiseMap;
uniform sampler2D projectionMap;
+uniform sampler2D lightFunc;
+
uniform mat4 proj_mat; //screen space to light space
uniform float proj_near; //near clip for projection
@@ -193,6 +195,8 @@ void main()
lit = da * dist_atten * noise;
+ lit = pow(lit, 0.7);
+
col = lcol*lit*diff_tex;
amb_da += (da*0.5)*proj_ambiance;
}
@@ -238,8 +242,25 @@ void main()
stc.x > 0.0 &&
stc.y > 0.0)
{
- vec4 scol = texture2DLodSpecular(projectionMap, stc.xy, proj_lod-spec.a*proj_lod);
- col += dist_atten*scol.rgb*color.rgb*scol.a*spec.rgb;
+ vec3 npos = -normalize(pos);
+ lv = pfinal-pos.xyz;
+ lv = normalize(lv);
+
+ vec3 h = normalize(lv+npos);
+ float nh = dot(norm, h);
+ float nv = dot(norm, npos);
+ float vh = dot(npos, h);
+ float sa = nh;
+ float fres = pow(1 - dot(h, npos), 5)*0.4+0.5;
+
+ float gtdenom = 2 * nh;
+ float gt = max(0,(min(gtdenom * nv / vh, gtdenom * da / vh)));
+
+ if (nh > 0.0)
+ {
+ float scol = fres*texture2D(lightFunc, vec2(nh, spec.a)).r*gt/(nh*da);
+ col += scol*color.rgb*texture2DLodSpecular(projectionMap, stc.xy, proj_lod-spec.a*proj_lod).rgb*spec.rgb;
+ }
}
}
}
diff --git a/indra/newview/app_settings/shaders/class2/deferred/multiSpotLightF.glsl b/indra/newview/app_settings/shaders/class2/deferred/multiSpotLightF.glsl
index 5621e47ab70989761a7d7249fb43edb503c7b8a6..d237ec623675465b25f0bfece1a39022a23b5aa9 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/multiSpotLightF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/multiSpotLightF.glsl
@@ -39,6 +39,7 @@ uniform samplerCube environmentMap;
uniform sampler2DRect lightMap;
uniform sampler2D noiseMap;
uniform sampler2D projectionMap;
+uniform sampler2D lightFunc;
uniform mat4 proj_mat; //screen space to light space
uniform float proj_near; //near clip for projection
@@ -177,7 +178,7 @@ void main()
lv = proj_origin-pos.xyz;
lv = normalize(lv);
float da = dot(norm, lv);
-
+
vec3 col = vec3(0,0,0);
vec3 diff_tex = texture2DRect(diffuseRect, frag.xy).rgb;
@@ -203,6 +204,8 @@ void main()
lit = da * dist_atten * noise;
+ lit = pow(lit, 0.7);
+
col = lcol*lit*diff_tex*shadow;
amb_da += (da*0.5)*(1.0-shadow)*proj_ambiance;
}
@@ -241,6 +244,7 @@ void main()
float fatten = clamp(spec.a*spec.a+spec.a*0.5, 0.25, 1.0);
+ //stc.xy = (stc.xy - vec2(0.5)) * fatten + vec2(0.5);
stc.xy = (stc.xy - vec2(0.5)) * fatten + vec2(0.5);
if (stc.x < 1.0 &&
@@ -248,8 +252,29 @@ void main()
stc.x > 0.0 &&
stc.y > 0.0)
{
- vec4 scol = texture2DLodSpecular(projectionMap, stc.xy, proj_lod-spec.a*proj_lod);
- col += dist_atten*scol.rgb*color.rgb*scol.a*spec.rgb*shadow;
+
+ vec3 npos = -normalize(pos);
+ lv = pfinal-pos.xyz;
+ lv = normalize(lv);
+
+ vec3 h = normalize(lv+npos);
+ float nh = dot(norm, h);
+ float nv = dot(norm, npos);
+ float vh = dot(npos, h);
+ float sa = nh;
+ float fres = pow(1 - dot(h, npos), 5)*0.4+0.5;
+
+ float gtdenom = 2 * nh;
+ float gt = max(0,(min(gtdenom * nv / vh, gtdenom * da / vh)));
+
+ if (nh > 0.0)
+ {
+ float scol = fres*texture2D(lightFunc, vec2(nh, spec.a)).r*gt/(nh*da);
+ col += scol*color.rgb*texture2DLodSpecular(projectionMap, stc.xy, proj_lod-spec.a*proj_lod).rgb*shadow*spec.rgb;
+ }
+
+ //vec4 scol = texture2DLodSpecular(projectionMap, stc.xy, proj_lod-spec.a*proj_lod);
+ //col += dist_atten*scol.rgb*color.rgb*scol.a*spec.rgb*shadow;
}
}
}
diff --git a/indra/newview/app_settings/shaders/class2/deferred/softenLightF.glsl b/indra/newview/app_settings/shaders/class2/deferred/softenLightF.glsl
index ff20b639722216e1dd912d65127a234d3704a618..eafb7d9c758f1de55ee1528d9c32ddfe08ea408b 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/softenLightF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/softenLightF.glsl
@@ -282,7 +282,8 @@ void main()
norm.xyz = (norm.xyz-0.5)*2.0; // unpack norm
float da = max(dot(norm.xyz, sun_dir.xyz), 0.0);
-
+ da = pow(da, 0.7);
+
vec4 diffuse = texture2DRect(diffuseRect, tc);
vec3 col;
@@ -309,7 +310,7 @@ void main()
//
vec3 refnormpersp = normalize(reflect(pos.xyz, norm.xyz));
float sa = dot(refnormpersp, sun_dir.xyz);
- vec3 dumbshiny = vary_SunlitColor*scol_ambocc.r*(6 * texture2D(lightFunc, vec2(sa, spec.a)).r);
+ vec3 dumbshiny = vary_SunlitColor*scol_ambocc.r*(texture2D(lightFunc, vec2(sa, spec.a)).r);
// add the two types of shiny together
vec3 spec_contrib = dumbshiny * spec.rgb;
diff --git a/indra/newview/app_settings/shaders/class2/deferred/spotLightF.glsl b/indra/newview/app_settings/shaders/class2/deferred/spotLightF.glsl
index 6d6ad6d5655560e5e07ce8008edf82c6500adb8d..af8089ce67faaea86f8db5e52764c2f9507c1ec8 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/spotLightF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/spotLightF.glsl
@@ -39,6 +39,8 @@ uniform samplerCube environmentMap;
uniform sampler2DRect lightMap;
uniform sampler2D noiseMap;
uniform sampler2D projectionMap;
+uniform sampler2D lightFunc;
+
uniform mat4 proj_mat; //screen space to light space
uniform float proj_near; //near clip for projection
@@ -203,6 +205,8 @@ void main()
lit = da * dist_atten * noise;
+ lit = pow(lit, 0.7);
+
col = lcol*lit*diff_tex*shadow;
amb_da += (da*0.5)*(1.0-shadow)*proj_ambiance;
}
@@ -248,8 +252,25 @@ void main()
stc.x > 0.0 &&
stc.y > 0.0)
{
- vec4 scol = texture2DLodSpecular(projectionMap, stc.xy, proj_lod-spec.a*proj_lod);
- col += dist_atten*scol.rgb*color.rgb*scol.a*spec.rgb*shadow;
+ vec3 npos = -normalize(pos);
+ lv = pfinal-pos.xyz;
+ lv = normalize(lv);
+
+ vec3 h = normalize(lv+npos);
+ float nh = dot(norm, h);
+ float nv = dot(norm, npos);
+ float vh = dot(npos, h);
+ float sa = nh;
+ float fres = pow(1 - dot(h, npos), 5)*0.4+0.5;
+
+ float gtdenom = 2 * nh;
+ float gt = max(0,(min(gtdenom * nv / vh, gtdenom * da / vh)));
+
+ if (nh > 0.0)
+ {
+ float scol = fres*texture2D(lightFunc, vec2(nh, spec.a)).r*gt/(nh*da);
+ col += scol*color.rgb*texture2DLodSpecular(projectionMap, stc.xy, proj_lod-spec.a*proj_lod).rgb*shadow*spec.rgb;
+ }
}
}
}
diff --git a/indra/newview/app_settings/shaders/class2/deferred/sunLightF.glsl b/indra/newview/app_settings/shaders/class2/deferred/sunLightF.glsl
index 890486c4b1dcab790fd6c9e33eb82255dcefab0b..147fb4562e70b9cc97906a382f2d07b9a4179fd9 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/sunLightF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/sunLightF.glsl
@@ -138,6 +138,7 @@ void main()
float shadow = 0.0;
float dp_directional_light = max(0.0, dot(norm, sun_dir.xyz));
+ dp_directional_light = pow(dp_directional_light, 0.7);
vec3 shadow_pos = pos.xyz + displace*norm;
vec3 offset = sun_dir.xyz * (1.0-dp_directional_light);
diff --git a/indra/newview/app_settings/shaders/class2/deferred/sunLightSSAOF.glsl b/indra/newview/app_settings/shaders/class2/deferred/sunLightSSAOF.glsl
index 2dcd3d656fd8ca480d3f50c8e841f8f4e3ef9d0b..907b96ffe4749b5801e119f954ac30228a554188 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/sunLightSSAOF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/sunLightSSAOF.glsl
@@ -199,6 +199,7 @@ void main()
float shadow = 0.0;
float dp_directional_light = max(0.0, dot(norm, sun_dir.xyz));
+ dp_directional_light = pow(dp_directional_light, 0.7);
vec3 shadow_pos = pos.xyz + displace*norm;
vec3 offset = sun_dir.xyz * (1.0-dp_directional_light);
diff --git a/indra/newview/pipeline.cpp b/indra/newview/pipeline.cpp
index 84fc6a12ec0e2fa77e37c6b6f6f4d07c6ecc54a8..090d3f895056b0aff1d039f8b22208151cebe708 100644
--- a/indra/newview/pipeline.cpp
+++ b/indra/newview/pipeline.cpp
@@ -1266,7 +1266,7 @@ void LLPipeline::createLUTBuffers()
{
if (!mLightFunc)
{
- U32 lightResX = gSavedSettings.getU32("RenderSpecularResX");
+ /*U32 lightResX = gSavedSettings.getU32("RenderSpecularResX");
U32 lightResY = gSavedSettings.getU32("RenderSpecularResY");
U8* ls = new U8[lightResX*lightResY];
F32 specExp = gSavedSettings.getF32("RenderSpecularExponent");
@@ -1302,10 +1302,10 @@ void LLPipeline::createLUTBuffers()
// Combined with a bit of noise and trilinear filtering, the banding is hardly noticable.
ls[y*lightResX+x] = (U8)(llclamp(spec * (1.f / 6), 0.f, 1.f) * 255);
}
- }
+ }*/
- /*U32 lightResX = gSavedSettings.getU32("RenderSpecularResX");
+ U32 lightResX = gSavedSettings.getU32("RenderSpecularResX");
U32 lightResY = gSavedSettings.getU32("RenderSpecularResY");
F32* ls = new F32[lightResX*lightResY];
//F32 specExp = gSavedSettings.getF32("RenderSpecularExponent"); // Note: only use this when creating new specular lighting functions.
@@ -1327,15 +1327,36 @@ void LLPipeline::createLUTBuffers()
// This is fine, given we only need to create our LUT once per buffer initialization.
spec *= (((n + 2) * (n + 4)) / (8 * F_PI * (powf(2, -n/2) + n)));
+ spec = llclamp(spec, 0.f, 1.f);
+ spec = powf(spec, 0.6f);
+
// Since we use R16F, we no longer have a dynamic range issue we need to work around here.
// Though some older drivers may not like this, newer drivers shouldn't have this problem.
ls[y*lightResX+x] = spec;
+
+
+ //beckmann distribution
+ /*F32 alpha = acosf((F32) x/(lightResX-1));
+ F32 m = 1.f - (F32) y/(lightResY-1);
+
+ F32 cos4_alpha = cosf(alpha);
+ cos4_alpha *= cos4_alpha;
+ cos4_alpha *= cos4_alpha;
+
+ F32 tan_alpha = tanf(alpha);
+ F32 tan2_alpha = tan_alpha*tan_alpha;
+
+ F32 k = expf(-(tan2_alpha)/(m*m)) /
+ (3.14159f*m*m*cos4_alpha);
+
+ ls[y*lightResX+x] = k;*/
}
- }*/
+ }
LLImageGL::generateTextures(LLTexUnit::TT_TEXTURE, GL_R8, 1, &mLightFunc);
gGL.getTexUnit(0)->bindManual(LLTexUnit::TT_TEXTURE, mLightFunc);
- LLImageGL::setManualImage(LLTexUnit::getInternalType(LLTexUnit::TT_TEXTURE), 0, GL_R16F, lightResX, lightResY, GL_RED, GL_UNSIGNED_BYTE, ls, false);
+ LLImageGL::setManualImage(LLTexUnit::getInternalType(LLTexUnit::TT_TEXTURE), 0, GL_R16F, lightResX, lightResY, GL_RED, GL_FLOAT, ls, false);
+ //LLImageGL::setManualImage(LLTexUnit::getInternalType(LLTexUnit::TT_TEXTURE), 0, GL_UNSIGNED_BYTE, lightResX, lightResY, GL_RED, GL_UNSIGNED_BYTE, ls, false);
gGL.getTexUnit(0)->setTextureAddressMode(LLTexUnit::TAM_CLAMP);
gGL.getTexUnit(0)->setTextureFilteringOption(LLTexUnit::TFO_TRILINEAR);
@@ -8255,7 +8276,7 @@ void LLPipeline::renderDeferredLighting()
LLFastTimer ftm(FTM_LOCAL_LIGHTS);
gDeferredLightProgram.uniform3fv(LLShaderMgr::LIGHT_CENTER, 1, c);
gDeferredLightProgram.uniform1f(LLShaderMgr::LIGHT_SIZE, s*s);
- gDeferredLightProgram.uniform3fv(LLShaderMgr::DIFFUSE_COLOR, 1, pow3f(col, 2.2f).mV);
+ gDeferredLightProgram.uniform3fv(LLShaderMgr::DIFFUSE_COLOR, 1, col.mV);
gDeferredLightProgram.uniform1f(LLShaderMgr::LIGHT_FALLOFF, volume->getLightFalloff()*0.5f);
gGL.syncMatrices();
@@ -8311,7 +8332,7 @@ void LLPipeline::renderDeferredLighting()
gDeferredSpotLightProgram.uniform3fv(LLShaderMgr::LIGHT_CENTER, 1, c);
gDeferredSpotLightProgram.uniform1f(LLShaderMgr::LIGHT_SIZE, s*s);
- gDeferredSpotLightProgram.uniform3fv(LLShaderMgr::DIFFUSE_COLOR, 1, pow3f(col, 2.2f).mV);
+ gDeferredSpotLightProgram.uniform3fv(LLShaderMgr::DIFFUSE_COLOR, 1, col.mV);
gDeferredSpotLightProgram.uniform1f(LLShaderMgr::LIGHT_FALLOFF, volume->getLightFalloff()*0.5f);
gGL.syncMatrices();
@@ -8402,7 +8423,7 @@ void LLPipeline::renderDeferredLighting()
gDeferredMultiSpotLightProgram.uniform3fv(LLShaderMgr::LIGHT_CENTER, 1, tc.v);
gDeferredMultiSpotLightProgram.uniform1f(LLShaderMgr::LIGHT_SIZE, s*s);
- gDeferredMultiSpotLightProgram.uniform3fv(LLShaderMgr::DIFFUSE_COLOR, 1, pow3f(col, 2.2f).mV);
+ gDeferredMultiSpotLightProgram.uniform3fv(LLShaderMgr::DIFFUSE_COLOR, 1, col.mV);
gDeferredMultiSpotLightProgram.uniform1f(LLShaderMgr::LIGHT_FALLOFF, volume->getLightFalloff()*0.5f);
mDeferredVB->drawArrays(LLRender::TRIANGLES, 0, 3);
}