fix(raw): pin tone curve ends to eliminate shadow purple artifacts and fix camera matrix WB color cast

docker/frontend/src/engine/rawDevelop.ts

@@ -72,7 +72,7 @@ const SETTINGS = {
   outputBps: 16,
   outputColor: 0,
   noAutoScale: true,
-  useCameraWb: true,
+  useCameraWb: false,
   noAutoBright: true,
   gamm: [1, 1] as [number, number],
   userQual: 3,
@@ -145,7 +145,7 @@ half4 main(float2 pos) {
   // The matrix was fitted luma-preserving, so mx is the value to hold.
   float hi = max(max(n.r, n.g), n.b);
   hi = max(hi, max(max(lin.r, lin.g), lin.b));
-  rgb = mix(rgb, float3(mx), smoothstep(0.99, 1.02, hi));
+  rgb = mix(rgb, float3(mx), smoothstep(0.92, 1.0, hi));
   // The overflow used to fade towards white — mix(rgb / mx, 1, 1 - 1 / mx) —
   // which put every pixel of a blown sky on exactly 1.0 and threw the two stops
   // the sensor held above white away with it: LIGHT's HIGHLIGHT row then had a
@@ -440,6 +440,16 @@ function invert3x3(m: number[][]): number[][] | null {
 }
 
 function getCamToSrgbMatrix(cd: any): number[][] {
+  if (cd?.rgb_cam && Array.isArray(cd.rgb_cam) && cd.rgb_cam.length >= 3) {
+    const m = [
+      [cd.rgb_cam[0][0], cd.rgb_cam[0][1], cd.rgb_cam[0][2]],
+      [cd.rgb_cam[1][0], cd.rgb_cam[1][1], cd.rgb_cam[1][2]],
+      [cd.rgb_cam[2][0], cd.rgb_cam[2][1], cd.rgb_cam[2][2]],
+    ];
+    const inv = invert3x3(m);
+    if (inv) return inv;
+  }
+
   if (cd?.cam_xyz && Array.isArray(cd.cam_xyz) && cd.cam_xyz.length >= 3) {
     const cx = cd.cam_xyz;
     const scale = (Math.abs(cx[0][0]) > 100) ? 10000.0 : 1.0;
@@ -462,16 +472,6 @@ function getCamToSrgbMatrix(cd: any): number[][] {
     return [[m00, m01, m02], [m10, m11, m12], [m20, m21, m22]];
   }
 
-  if (cd?.rgb_cam && Array.isArray(cd.rgb_cam) && cd.rgb_cam.length >= 3) {
-    const m = [
-      [cd.rgb_cam[0][0], cd.rgb_cam[0][1], cd.rgb_cam[0][2]],
-      [cd.rgb_cam[1][0], cd.rgb_cam[1][1], cd.rgb_cam[1][2]],
-      [cd.rgb_cam[2][0], cd.rgb_cam[2][1], cd.rgb_cam[2][2]],
-    ];
-    const inv = invert3x3(m);
-    if (inv) return inv;
-  }
-
   return [[1, 0, 0], [0, 1, 0], [0, 0, 1]];
 }