SL-10901

Fix up shadow sampling and tweak shadow biasing.

Clean up shader decls of unused funcs.

Clean up whitespace diffs from release.

4 files changed, 22 insertions, 18 deletions

diff --git a/indra/newview/app_settings/shaders/class1/deferred/alphaF.glsl b/indra/newview/app_settings/shaders/class1/deferred/alphaF.glsl
index ca82dd9432..ab7f779a39 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/alphaF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/alphaF.glsl
@@ -83,7 +83,7 @@ void calcAtmosphericVars(vec3 inPositionEye, float ambFactor, out vec3 sunlit, o
 float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen);
 #endif
 
-vec3 calcPointLightOrSpotLight(vec3 light_col, vec3 diffuse, vec3 v, vec3 n, vec4 lp, vec3 ln, float la, float fa, float is_pointlight, float ambiance ,float shadow)
+vec3 calcPointLightOrSpotLight(vec3 light_col, vec3 diffuse, vec3 v, vec3 n, vec4 lp, vec3 ln, float la, float fa, float is_pointlight, float ambiance)
 {
     //get light vector
     vec3 lv = lp.xyz-v;
@@ -115,15 +115,19 @@ vec3 calcPointLightOrSpotLight(vec3 light_col, vec3 diffuse, vec3 v, vec3 n, vec
         // to match spotLight (but not multiSpotLight) *sigh*
         float lit = max(da * dist_atten,0.0);
 
-        col = lit * light_col * diffuse * shadow;
+        col = lit * light_col * diffuse;
 
         float amb_da = ambiance;
-        amb_da += (da*0.5+0.5) * (1.0 - shadow) * ambiance;
-        amb_da += (da*da*0.5 + 0.5) * (1.0 - shadow) * ambiance;
+        if (da > 0)
+        {
+            amb_da += (da*0.5+0.5) * ambiance;
+        }
+        amb_da += (da*da*0.5 + 0.5) * ambiance;
         amb_da *= dist_atten;
         amb_da = min(amb_da, 1.0f - lit);
 
         col.rgb += amb_da * 0.5 * light_col * diffuse;
+
         // no spec for alpha shader...
     }
     col = max(col, vec3(0));
@@ -185,6 +189,7 @@ void main()
     vec3 atten;
 
     calcAtmosphericVars(pos.xyz, 1.0, sunlit, amblit, additive, atten);
+    sunlit *= 0.5;
 
     vec2 abnormal = encode_normal(norm.xyz);
 
@@ -228,9 +233,9 @@ vec3 post_diffuse = color.rgb;
 
     vec4 light = vec4(0,0,0,0);
 
-vec3 prelight_linearish_maybe = color.rgb;
+vec3 prelight_linearish_maybe = srgb_to_linear(color.rgb);
 
-   #define LIGHT_LOOP(i) light.rgb += calcPointLightOrSpotLight(light_diffuse[i].rgb, diff.rgb, pos.xyz, norm, light_position[i], light_direction[i].xyz, light_attenuation[i].x, light_attenuation[i].y, light_attenuation[i].z, light_attenuation[i].w * 0.5, 1.0);
+   #define LIGHT_LOOP(i) light.rgb += calcPointLightOrSpotLight(light_diffuse[i].rgb, diff.rgb, pos.xyz, norm, light_position[i], light_direction[i].xyz, light_attenuation[i].x, light_attenuation[i].y, light_attenuation[i].z, light_attenuation[i].w * 0.5);
 
     LIGHT_LOOP(1)
     LIGHT_LOOP(2)
diff --git a/indra/newview/app_settings/shaders/class1/deferred/materialF.glsl b/indra/newview/app_settings/shaders/class1/deferred/materialF.glsl
index 9b07c11361..d14e67fc73 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/materialF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/materialF.glsl
@@ -83,7 +83,7 @@ uniform vec3 light_direction[8];
 uniform vec4 light_attenuation[8]; 
 uniform vec3 light_diffuse[8];
 
-vec3 calcPointLightOrSpotLight(vec3 light_col, vec3 npos, vec3 diffuse, vec4 spec, vec3 v, vec3 n, vec4 lp, vec3 ln, float la, float fa, float is_pointlight, inout float glare, float ambiance, float shadow)
+vec3 calcPointLightOrSpotLight(vec3 light_col, vec3 npos, vec3 diffuse, vec4 spec, vec3 v, vec3 n, vec4 lp, vec3 ln, float la, float fa, float is_pointlight, inout float glare, float ambiance)
 {
     //get light vector
     vec3 lv = lp.xyz-v;
@@ -109,17 +109,16 @@ vec3 calcPointLightOrSpotLight(vec3 light_col, vec3 npos, vec3 diffuse, vec4 spe
 
         // spotlight coefficient.
         float spot = max(dot(-ln, lv), is_pointlight);
-        da *= spot*spot; // GL_SPOT_EXPONENT=2
 
         //angular attenuation
         da = dot(n, lv);
         da = clamp(da, 0.0, 1.0);
 
+        da *= spot*spot; // GL_SPOT_EXPONENT=2
+
         float lit = max(da * dist_atten, 0.0);
 
-        // shadowmap is wrong for alpha-blended objs
-        // since we created shadowmaps for 2 but render N
-        col = light_col*lit*diffuse*shadow;
+        col = light_col*lit*diffuse;
         
         float amb_da = ambiance;
         if (da > 0)
@@ -148,7 +147,7 @@ vec3 calcPointLightOrSpotLight(vec3 light_col, vec3 npos, vec3 diffuse, vec4 spe
             {
                 float scol = fres*texture2D(lightFunc, vec2(nh, spec.a)).r*gt/(nh*da);
                 vec3 speccol = lit*scol*light_col.rgb*spec.rgb;
-                speccol = max(speccol, vec3(0));
+                speccol = clamp(speccol, vec3(0), vec3(1));
                 col += speccol;
 
                 float cur_glare = max(speccol.r, speccol.g);
@@ -372,9 +371,9 @@ vec3 post_spec = col.rgb;
             
     vec3 light = vec3(0,0,0);
 
-    vec3 prelight_linearish_maybe = col.rgb;
+    vec3 prelight_linearish_maybe = srgb_to_linear(col.rgb);
 
- #define LIGHT_LOOP(i) light.rgb += calcPointLightOrSpotLight(light_diffuse[i].rgb, npos, diffuse.rgb, final_specular, pos.xyz, norm.xyz, light_position[i], light_direction[i].xyz, light_attenuation[i].x, light_attenuation[i].y, light_attenuation[i].z, glare, light_attenuation[i].w * 0.5, 1.0);
+ #define LIGHT_LOOP(i) light.rgb += calcPointLightOrSpotLight(light_diffuse[i].rgb, npos, diffuse.rgb, final_specular, pos.xyz, norm.xyz, light_position[i], light_direction[i].xyz, light_attenuation[i].x, light_attenuation[i].y, light_attenuation[i].z, glare, light_attenuation[i].w * 0.5);
 
         LIGHT_LOOP(1)
         LIGHT_LOOP(2)
diff --git a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
index 642aff6c41..0a714f0013 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
@@ -49,7 +49,7 @@ uniform int sun_up_factor;
 float pcfShadow(sampler2DShadow shadowMap, vec3 norm, vec4 stc, float bias_mul, vec2 pos_screen, vec3 light_dir)
 {
     stc.xyz /= stc.w;
-    stc.z += shadow_bias * bias_mul * 2.0;
+    stc.z += shadow_bias * bias_mul * 16.0;
     stc.x = floor(stc.x*shadow_res.x + fract(stc.y*shadow_res.y))/shadow_res.x; // add some chaotic jitter to X sample pos according to Y to disguise the snapping going on here
     float cs = shadow2D(shadowMap, stc.xyz).x;
     float shadow = cs * 4.0;
@@ -57,7 +57,7 @@ float pcfShadow(sampler2DShadow shadowMap, vec3 norm, vec4 stc, float bias_mul,
     shadow += shadow2D(shadowMap, stc.xyz+vec3(1.0/shadow_res.x, -1.5/shadow_res.y, 0.0)).x;
     shadow += shadow2D(shadowMap, stc.xyz+vec3(-1.0/shadow_res.x, 1.5/shadow_res.y, 0.0)).x;
     shadow += shadow2D(shadowMap, stc.xyz+vec3(-2.0/shadow_res.x, -1.5/shadow_res.y, 0.0)).x;
-    return shadow * 0.125;
+    return clamp(shadow * 0.125, 0.0, 1.0);
 }
 
 float pcfSpotShadow(sampler2DShadow shadowMap, vec4 stc, float bias_scale, vec2 pos_screen)
diff --git a/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl
index ff30004ffd..476a1216d3 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl
@@ -151,8 +151,8 @@ vec3 post_diffuse = col.rgb;
             {
                 float scol = fres*texture2D(lightFunc, vec2(nh, spec.a)).r*gt/(nh*da);
                 vec3 speccol = sun_contrib*scol*spec.rgb;
-                speccol = max(speccol, vec3(0));
-                bloom = dot (speccol, speccol) / 2;
+                speccol = clamp(speccol, vec3(0), vec3(1));
+                bloom = dot(speccol, speccol) / 2;
                 col += speccol;
             }
         }