Release 0.13.2

native/dark_color.h

@@ -7,10 +7,10 @@ static inline void dark_color_filter(unsigned char color[3]) {
     for (unsigned c = 1; c < 3; c++)
         if (color[c] > peak)
             peak = color[c];
-    if (peak >= 24)
+    if (peak >= 32)
         return;
-    unsigned gain = peak > 12 ? peak - 12 : 0;
+    unsigned gain = peak > 16 ? peak - 16 : 0;
     for (unsigned c = 0; c < 3; c++)
-        color[c] = (unsigned char)((color[c] * gain + 6) / 12);
+        color[c] = (unsigned char)((color[c] * gain + 8) / 16);
 }
 #endif

native/test_dark_color.c

@@ -5,17 +5,20 @@ int main(void) {
     for (unsigned v = 0; v <= 255; v++) {
         unsigned char gray[3] = {v, v, v};
         dark_color_filter(gray);
-        unsigned expected = v <= 12 ? 0 : v >= 24 ? v : (v * (v - 12) + 6) / 12;
+        unsigned expected = v <= 16 ? 0 : v >= 32 ? v : (v * (v - 16) + 8) / 16;
         for (unsigned c = 0; c < 3; c++) assert(gray[c] == expected);
     }
     unsigned char residual[3] = {4, 8, 2};
     dark_color_filter(residual);
     assert(!residual[0] && !residual[1] && !residual[2]);
-    unsigned char transition[3] = {9, 18, 6};
+    unsigned char measured[3] = {13, 14, 7};
+    dark_color_filter(measured);
+    assert(!measured[0] && !measured[1] && !measured[2]);
+    unsigned char transition[3] = {12, 24, 8};
     dark_color_filter(transition);
-    assert(transition[0] == 5 && transition[1] == 9 && transition[2] == 3);
-    unsigned char saturated[3] = {0, 24, 0};
+    assert(transition[0] == 6 && transition[1] == 12 && transition[2] == 4);
+    unsigned char saturated[3] = {0, 32, 0};
     dark_color_filter(saturated);
-    assert(saturated[0] == 0 && saturated[1] == 24 && saturated[2] == 0);
+    assert(saturated[0] == 0 && saturated[1] == 32 && saturated[2] == 0);
     puts("PASS: near-black suppression, gradual transition, unchanged brighter colors");
 }

native/version.h

@@ -1,4 +1,4 @@
 #ifndef HYPERDRM_VERSION_H
 #define HYPERDRM_VERSION_H
-#define HYPERDRM_VERSION "0.13.1"
+#define HYPERDRM_VERSION "0.13.2"
 #endif