Refactor plutovg_div255 macro to static inline function

sammycage · Nov 2, 2024 · 80154ce · 80154ce
1 parent 361758c
commit 80154ce
Showing 1 changed file with 8 additions and 4 deletions.
diff --git a/source/plutovg-utils.h b/source/plutovg-utils.h
@@ -17,7 +17,6 @@
 #define plutovg_min(a, b) ((a) < (b) ? (a) : (b))
 #define plutovg_max(a, b) ((a) > (b) ? (a) : (b))
 #define plutovg_clamp(v, lo, hi) ((v) < (lo) ? (lo) : (hi) < (v) ? (hi) : (v))
-#define plutovg_div255(x) (((x) + ((x) >> 8) + 0x80) >> 8)
 
 #define plutovg_alpha(c) (((c) >> 24) & 0xff)
 #define plutovg_red(c) (((c) >> 16) & 0xff)
@@ -53,16 +52,21 @@
 #define plutovg_array_clear(array) ((array).size = 0)
 #define plutovg_array_destroy(array) free((array).data)
 
+static inline uint32_t plutovg_div255(uint32_t x)
+{
+    return (((x) + ((x) >> 8) + 0x80) >> 8);
+}
+
 static inline uint32_t plutovg_premultiply_argb(uint32_t color)
 {
     uint32_t a = plutovg_alpha(color);
     uint32_t r = plutovg_red(color);
     uint32_t g = plutovg_green(color);
     uint32_t b = plutovg_blue(color);
     if(a != 255) {
-        r = (r * a) / 255;
-        g = (g * a) / 255;
-        b = (b * a) / 255;
+        r = plutovg_div255(r * a);
+        g = plutovg_div255(g * a);
+        b = plutovg_div255(b * a);
     }
 
     return (a << 24) | (r << 16) | (g << 8) | (b);