core/colorpipeline: allow rounding away more floating point errors

Black point compensation introduced a tiny bit increased error in the floating point
calculations, but the errors are still way too small to actually matter.
To avoid those unnecessary calculations causing performance issues and more rounding
errors, this commit changes the allowed error to 10^-5.

src/core/colorpipeline.cpp

@@ -167,7 +167,7 @@ static bool isFuzzyIdentity(const QMatrix4x4 &mat)
 {
     // matrix calculations with floating point numbers can result in very small errors
     // -> ignore them, as that just causes inefficiencies and more rounding errors
-    constexpr float maxResolution = 0.0000001;
+    constexpr float maxResolution = 0.00001;
     for (int i = 0; i < 4; i++) {
         for (int j = 0; j < 4; j++) {
             const float targetValue = i == j ? 1 : 0;
@@ -183,7 +183,7 @@ static bool isFuzzyScalingOnly(const QMatrix4x4 &mat)
 {
     // matrix calculations with floating point numbers can result in very small errors
     // -> ignore them, as that just causes inefficiencies and more rounding errors
-    constexpr float maxResolution = 0.0000001;
+    constexpr float maxResolution = 0.00001;
     for (int i = 0; i < 4; i++) {
         for (int j = 0; j < 4; j++) {
             if (i < 3 && i == j) {