Merge tag 'Second_Life_Release#a6d4c1d3-2025.07' into 2025.07

4 files changed, 60 insertions, 7 deletions

diff --git a/indra/newview/app_settings/shaders/class1/deferred/CASF.glsl b/indra/newview/app_settings/shaders/class1/deferred/CASF.glsl
index 017855325c..8e12d09443 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/CASF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/CASF.glsl
@@ -2545,12 +2545,31 @@ A_STATIC void CasSetup(
 #endif
 
 #ifdef A_GPU
+
+#ifdef LEGACY_GAMMA
+uniform float gamma;
+
+vec3 legacyGamma(vec3 color)
+{
+    vec3 c = 1. - clamp(color, vec3(0.), vec3(1.));
+    c = 1. - pow(c, vec3(gamma)); // s/b inverted already CPU-side
+
+    return c;
+}
+#endif
+
 void main()
 {
     vec4 diff = vec4(0.f);
     uvec2 point = uvec2(vary_fragcoord * out_screen_res.xy);
     CasFilter(diff.r, diff.g, diff.b, point, cas_param_0, cas_param_1, true);
     diff.a = texture(diffuseRect, vary_fragcoord).a;
+    diff.rgb = linear_to_srgb(diff.rgb);
+
+#ifdef LEGACY_GAMMA
+    diff.rgb = legacyGamma(diff.rgb);
+#endif
+
     frag_color = diff;
 }
 #endif
diff --git a/indra/newview/app_settings/shaders/class1/deferred/SMAA.glsl b/indra/newview/app_settings/shaders/class1/deferred/SMAA.glsl
index fdb77cce6e..5837308965 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/SMAA.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/SMAA.glsl
@@ -1351,6 +1351,10 @@ float4 SMAABlendingWeightCalculationPS(float2 texcoord,
 //-----------------------------------------------------------------------------
 // Neighborhood Blending Pixel Shader (Third Pass)
 
+vec3 srgb_to_linear(vec3 cs);
+vec4 srgb_to_linear4(vec4 cs);
+vec3 linear_to_srgb(vec3 cl);
+
 float4 SMAANeighborhoodBlendingPS(float2 texcoord,
                                   float4 offset,
                                   SMAATexture2D(colorTex),
@@ -1369,6 +1373,7 @@ float4 SMAANeighborhoodBlendingPS(float2 texcoord,
     SMAA_BRANCH
     if (dot(a, float4(1.0, 1.0, 1.0, 1.0)) < 1e-5) {
         float4 color = SMAASampleLevelZero(colorTex, texcoord);
+        color.rgb = srgb_to_linear(color.rgb);
 
         #if SMAA_REPROJECTION
         float2 velocity = SMAA_DECODE_VELOCITY(SMAASampleLevelZero(velocityTex, texcoord));
@@ -1377,6 +1382,7 @@ float4 SMAANeighborhoodBlendingPS(float2 texcoord,
         color.a = sqrt(5.0 * length(velocity));
         #endif
 
+        color.rgb = linear_to_srgb(color.rgb);
         return color;
     } else {
         bool h = max(a.x, a.z) > max(a.y, a.w); // max(horizontal) > max(vertical)
@@ -1393,8 +1399,13 @@ float4 SMAANeighborhoodBlendingPS(float2 texcoord,
 
         // We exploit bilinear filtering to mix current pixel with the chosen
         // neighbor:
-        float4 color = blendingWeight.x * SMAASampleLevelZero(colorTex, blendingCoord.xy);
-        color += blendingWeight.y * SMAASampleLevelZero(colorTex, blendingCoord.zw);
+        float4 color = SMAASampleLevelZero(colorTex, blendingCoord.xy);
+        color.rgb = srgb_to_linear(color.rgb);
+        color = blendingWeight.x * color;
+
+        float4 color2 = SMAASampleLevelZero(colorTex, blendingCoord.zw);
+        color2.rgb = srgb_to_linear(color2.rgb);
+        color += blendingWeight.y * color2;
 
         #if SMAA_REPROJECTION
         // Antialias velocity for proper reprojection in a later stage:
@@ -1405,6 +1416,7 @@ float4 SMAANeighborhoodBlendingPS(float2 texcoord,
         color.a = sqrt(5.0 * length(velocity));
         #endif
 
+        color.rgb = linear_to_srgb(color.rgb);
         return color;
     }
 }
diff --git a/indra/newview/app_settings/shaders/class1/deferred/postDeferredGammaCorrect.glsl b/indra/newview/app_settings/shaders/class1/deferred/postDeferredGammaCorrect.glsl
index 197ce48a45..a24e7c0b90 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/postDeferredGammaCorrect.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/postDeferredGammaCorrect.glsl
@@ -43,8 +43,6 @@ vec3 legacyGamma(vec3 color)
     return c;
 }
 
-vec3 clampHDRRange(vec3 color);
-
 void main()
 {
     //this is the one of the rare spots where diffuseRect contains linear color values (not sRGB)
@@ -55,7 +53,7 @@ void main()
     diff.rgb = legacyGamma(diff.rgb);
 #endif
 
-    diff.rgb = clampHDRRange(diff.rgb);
+    diff.rgb = clamp(diff.rgb, vec3(0.0), vec3(1.0));
     frag_color = diff;
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/deferred/postDeferredTonemap.glsl b/indra/newview/app_settings/shaders/class1/deferred/postDeferredTonemap.glsl
index 1f01c7f16a..b1218d61af 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/postDeferredTonemap.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/postDeferredTonemap.glsl
@@ -31,11 +31,25 @@ uniform sampler2D diffuseRect;
 
 in vec2 vary_fragcoord;
 
+#ifdef GAMMA_CORRECT
+uniform float gamma;
+#endif
+
 vec3 linear_to_srgb(vec3 cl);
 vec3 toneMap(vec3 color);
 
 vec3 clampHDRRange(vec3 color);
 
+#ifdef GAMMA_CORRECT
+vec3 legacyGamma(vec3 color)
+{
+    vec3 c = 1. - clamp(color, vec3(0.), vec3(1.));
+    c = 1. - pow(c, vec3(gamma)); // s/b inverted already CPU-side
+
+    return c;
+}
+#endif
+
 void main()
 {
     //this is the one of the rare spots where diffuseRect contains linear color values (not sRGB)
@@ -47,8 +61,18 @@ void main()
     diff.rgb = clamp(diff.rgb, vec3(0.0), vec3(1.0));
 #endif
 
-    diff.rgb = clampHDRRange(diff.rgb);
+#ifdef GAMMA_CORRECT
+    diff.rgb = linear_to_srgb(diff.rgb);
+
+#ifdef LEGACY_GAMMA
+    diff.rgb = legacyGamma(diff.rgb);
+#endif
+
+#endif
+
+    diff.rgb = clamp(diff.rgb, vec3(0.0), vec3(1.0)); // We should always be 0-1 past this point
+
     //debugExposure(diff.rgb);
-    frag_color = max(diff, vec4(0));
+    frag_color = diff;
 }