SL-19538 Followup -- scrub all possible sources of NaNs, make dynamic exposure controls not persist, limit exposure range, and do a debug gl pass.

4 files changed, 8 insertions, 6 deletions

diff --git a/indra/newview/app_settings/shaders/class3/deferred/fullbrightShinyF.glsl b/indra/newview/app_settings/shaders/class3/deferred/fullbrightShinyF.glsl
index f6bed16c84..6b7dc7ac1d 100644
--- a/indra/newview/app_settings/shaders/class3/deferred/fullbrightShinyF.glsl
+++ b/indra/newview/app_settings/shaders/class3/deferred/fullbrightShinyF.glsl
@@ -92,6 +92,6 @@ void main()
 
 	color.a = 1.0;
 
-	frag_color = color;
+	frag_color = max(color, vec4(0));
 }
 
diff --git a/indra/newview/app_settings/shaders/class3/deferred/materialF.glsl b/indra/newview/app_settings/shaders/class3/deferred/materialF.glsl
index 02ab4494f6..1aef971d3a 100644
--- a/indra/newview/app_settings/shaders/class3/deferred/materialF.glsl
+++ b/indra/newview/app_settings/shaders/class3/deferred/materialF.glsl
@@ -183,7 +183,7 @@ vec3 calcPointLightOrSpotLight(vec3 light_col, vec3 npos, vec3 diffuse, vec4 spe
 
 #else
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 frag_data[3];
+out vec4 frag_data[4];
 #else
 #define frag_data gl_FragData
 #endif
@@ -412,13 +412,14 @@ void main()
     color = temp.rgb;
 #endif
 
-    frag_color = vec4(color, al);
+    frag_color = max(vec4(color, al), vec4(0));
 
 #else // mode is not DIFFUSE_ALPHA_MODE_BLEND, encode to gbuffer 
     // deferred path               // See: C++: addDeferredAttachment(), shader: softenLightF.glsl
     frag_data[0] = vec4(diffcol.rgb, emissive);        // gbuffer is sRGB for legacy materials
     frag_data[1] = vec4(spec.rgb, glossiness);           // XYZ = Specular color. W = Specular exponent.
     frag_data[2] = vec4(encode_normal(norm), env, GBUFFER_FLAG_HAS_ATMOS);;   // XY = Normal.  Z = Env. intensity. W = 1 skip atmos (mask off fog)
+    frag_data[3] = vec4(0);
 #endif
 }
 
diff --git a/indra/newview/app_settings/shaders/class3/deferred/screenSpaceReflPostF.glsl b/indra/newview/app_settings/shaders/class3/deferred/screenSpaceReflPostF.glsl
index 742f528cb1..f1865a77e2 100644
--- a/indra/newview/app_settings/shaders/class3/deferred/screenSpaceReflPostF.glsl
+++ b/indra/newview/app_settings/shaders/class3/deferred/screenSpaceReflPostF.glsl
@@ -73,7 +73,7 @@ void main()
     vec4 diffuse = texture2D(diffuseRect, tc);
     vec3 specCol = spec.rgb;
 
-    frag_color = texture(diffuseMap, tc);
+    vec4 fcol = texture(diffuseMap, tc);
 
     if (GET_GBUFFER_FLAG(GBUFFER_FLAG_HAS_PBR)) 
     {
@@ -94,5 +94,6 @@ void main()
 
     collectedColor.rgb *= specCol.rgb;
 
-    frag_color += collectedColor * w;
+    fcol += collectedColor * w;
+    frag_color = max(fcol, vec4(0));
 }
diff --git a/indra/newview/app_settings/shaders/class3/deferred/softenLightF.glsl b/indra/newview/app_settings/shaders/class3/deferred/softenLightF.glsl
index 99beb0d890..e1206cc844 100644
--- a/indra/newview/app_settings/shaders/class3/deferred/softenLightF.glsl
+++ b/indra/newview/app_settings/shaders/class3/deferred/softenLightF.glsl
@@ -270,6 +270,6 @@ void main()
         color       = fogged.rgb;
     #endif
 
-    frag_color.rgb = color.rgb; //output linear since local lights will be added to this shader's results
+    frag_color.rgb = max(color.rgb, vec3(0)); //output linear since local lights will be added to this shader's results
     frag_color.a = 0.0;
 }