[PPV2] Fix HLSL 2021 non-scalar logical operations (#8007)

* Fix HLSL 2021 non-scalar ternary condition
* Update changelog

Author: BenGraterUnity

Diff for: com.unity.postprocessing/CHANGELOG.md

@@ -11,6 +11,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ### Fixed
 - Fixed obsolete FormatUsage error
+- Fixed non-scalar logical operation error
 - Fixed MSVO to support platforms with limited storage texture support
 - Fixed compute based effects not supported on WebGL and Android OpenGL (IN-2999)
 - Fixed grid gizmo is visible through geometry when Post Process Layer is enabled (IN-10318)

Diff for: com.unity.postprocessing/PostProcessing/Shaders/ACES.hlsl

@@ -220,7 +220,9 @@ half3 ACES_to_ACEScc(half3 x)
     x = clamp(x, 0.0, HALF_MAX);
 
     // x is clamped to [0, HALF_MAX], skip the <= 0 check
-    return (x < 0.00003051757) ? (log2(0.00001525878 + x * 0.5) + 9.72) / 17.52 : (log2(x) + 9.72) / 17.52;
+    return half3((x.x < 0.00003051757) ? (log2(0.00001525878 + x.x * 0.5) + 9.72) / 17.52 : (log2(x.x) + 9.72) / 17.52,
+                 (x.y < 0.00003051757) ? (log2(0.00001525878 + x.y * 0.5) + 9.72) / 17.52 : (log2(x.y) + 9.72) / 17.52,
+                 (x.z < 0.00003051757) ? (log2(0.00001525878 + x.z * 0.5) + 9.72) / 17.52 : (log2(x.z) + 9.72) / 17.52);
 
     /*
     return half3(
@@ -678,7 +680,9 @@ half roll_white_fwd(
 
 half3 linear_to_sRGB(half3 x)
 {
-    return (x <= 0.0031308 ? (x * 12.9232102) : 1.055 * pow(x, 1.0 / 2.4) - 0.055);
+    return half3(x.x <= 0.0031308 ? (x.x * 12.9232102) : 1.055 * pow(x.x, 1.0 / 2.4) - 0.055,
+                 x.y <= 0.0031308 ? (x.y * 12.9232102) : 1.055 * pow(x.y, 1.0 / 2.4) - 0.055,
+                 x.z <= 0.0031308 ? (x.z * 12.9232102) : 1.055 * pow(x.z, 1.0 / 2.4) - 0.055);
 }
 
 half3 linear_to_bt1886(half3 x, half gamma, half Lw, half Lb)

Diff for: com.unity.postprocessing/PostProcessing/Shaders/Colors.hlsl

@@ -179,7 +179,7 @@ half3 SRGBToLinear(half3 c)
 #else
     half3 linearRGBLo = c / 12.92;
     half3 linearRGBHi = PositivePow((c + 0.055) / 1.055, half3(2.4, 2.4, 2.4));
-    half3 linearRGB = (c <= 0.04045) ? linearRGBLo : linearRGBHi;
+    half3 linearRGB = half3((c.x <= 0.04045) ? linearRGBLo.x : linearRGBHi.x, (c.y <= 0.04045) ? linearRGBLo.y : linearRGBHi.y, (c.z <= 0.04045) ? linearRGBLo.z : linearRGBHi.z);
     return linearRGB;
 #endif
 }
@@ -212,7 +212,7 @@ half3 LinearToSRGB(half3 c)
 #else
     half3 sRGBLo = c * 12.92;
     half3 sRGBHi = (PositivePow(c, half3(1.0 / 2.4, 1.0 / 2.4, 1.0 / 2.4)) * 1.055) - 0.055;
-    half3 sRGB = (c <= 0.0031308) ? sRGBLo : sRGBHi;
+    half3 sRGB = half3((c.x <= 0.0031308) ? sRGBLo.x : sRGBHi.x, (c.y <= 0.0031308) ? sRGBLo.y : sRGBHi.y, (c.z <= 0.0031308) ? sRGBLo.z : sRGBHi.z);
     return sRGB;
 #endif
 }