SL-10415, SL-10612, SL-10569

Fix shadow sampling min with caster dp and offset tweaks.

Fix moon direction not being transformed as the sun dir is.

Fix colorspace issue causing some objects to render grayish instead of blackish.

2 files changed, 22 insertions, 12 deletions

diff --git a/indra/newview/app_settings/shaders/class1/deferred/materialF.glsl b/indra/newview/app_settings/shaders/class1/deferred/materialF.glsl
index c8f4d7c570..251e60c59e 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/materialF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/materialF.glsl
@@ -202,7 +202,8 @@ void main()
 #endif
 
 #if (DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_BLEND)
-    vec3 gamma_diff = linear_to_srgb(diffcol.rgb);
+    vec3 gamma_diff = diffcol.rgb;
+    diffcol.rgb = srgb_to_linear(diffcol.rgb);
 #endif
 
 #if HAS_SPECULAR_MAP
@@ -280,20 +281,17 @@ void main()
           final_da = min(final_da, 1.0f);
           final_da = pow(final_da, display_gamma);
 
-    col.rgb = (col * 0.5) + amblit;
+    col.rgb = amblit;
     
     float ambient = min(abs(final_da), 1.0);
     ambient *= 0.5;
     ambient *= ambient;
     ambient = (1.0-ambient);
 
-    col.rgb *= ambient;
-
-    col.rgb = col.rgb + (final_da * sunlit);
-
+    col.rgb *= min(ambient, max(shadow,0.3));
+    col.rgb += (final_da * sunlit);
     col.rgb *= gamma_diff.rgb;
     
-
     float glare = 0.0;
 
     if (spec.a > 0.0) // specular reflection
@@ -315,6 +313,7 @@ void main()
         col += spec_contrib;
     }
 
+vec3 post_spec = col.rgb;
 
     col = mix(col.rgb, diffcol.rgb, diffuse.a);
 
@@ -337,6 +336,8 @@ void main()
     col = atmosFragLighting(col, additive, atten);
     col = scaleSoftClipFrag(col);
 
+vec3 post_atmo= col.rgb;
+
     vec3 npos = normalize(-pos.xyz);
             
     vec3 light = vec3(0,0,0);
@@ -353,18 +354,24 @@ void main()
 
     col.rgb += light.rgb;
 
+vec3 post_lighting = col.rgb;
+
     glare = min(glare, 1.0);
     float al = max(diffcol.a,glare)*vertex_color.a;
 
     //convert to gamma space for display on screen
     col.rgb = linear_to_srgb(col.rgb);
 
+vec3 post_srgb = col.rgb;
+
 #ifdef WATER_FOG
     vec4 temp = applyWaterFogView(pos, vec4(col.rgb, al));
     col.rgb = temp.rgb;
     al = temp.a;
 #endif
 
+//col.rgb = post_lighting;
+
     frag_color.rgb = col.rgb;
     frag_color.a   = al;
 
diff --git a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
index 5cc24475e3..ad96c84de8 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
@@ -49,8 +49,8 @@ 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.x = floor(stc.x*shadow_res.x + fract(stc.y*pos_screen.y*pos_screen.x))/shadow_res.x; // add some chaotic jitter to X sample pos according to Y to disguise the snapping going on here
+    stc.z += shadow_bias * bias_mul * 2.0;
+    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;
@@ -90,7 +90,9 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
           dp_directional_light = clamp(dp_directional_light, 0.0, 1.0);
 
     vec3 shadow_pos = pos.xyz;
-    vec3 offset = abs(light_dir.xyz) * (1.0 - dp_directional_light* 0.8);
+
+    vec3 offset = light_dir.xyz * (1.0 - dp_directional_light);
+
     shadow_pos += offset * shadow_offset;
 
     vec4 spos = vec4(shadow_pos.xyz, 1.0);
@@ -109,7 +111,7 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
             
             float w = 1.0;
             w -= max(spos.z-far_split.z, 0.0)/transition_domain.z;
-            shadow += pcfShadow(shadowMap3, norm, lpos, 4.0, pos_screen, light_dir)*w;
+            shadow += pcfShadow(shadowMap3, norm, lpos, 1.0, pos_screen, light_dir)*w;
             weight += w;
             shadow += max((pos.z+shadow_clip.z)/(shadow_clip.z-shadow_clip.w)*2.0-1.0, 0.0);
         }
@@ -121,7 +123,7 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
             float w = 1.0;
             w -= max(spos.z-far_split.y, 0.0)/transition_domain.y;
             w -= max(near_split.z-spos.z, 0.0)/transition_domain.z;
-            shadow += pcfShadow(shadowMap2, norm, lpos, 2.0, pos_screen, light_dir)*w;
+            shadow += pcfShadow(shadowMap2, norm, lpos, 1.0, pos_screen, light_dir)*w;
             weight += w;
         }
 
@@ -153,6 +155,7 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
     {
         return 1.0f; // lit beyond the far split...
     }
+    shadow = min(dp_directional_light,shadow);
     return shadow;
 }