shithub: imgtools

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redefine stbir__edge_wrap as a macro for a speed up

--- a/stb_image_resize.h

+++ b/stb_image_resize.h

@@ -981,13 +981,9 @@

     }

 }

-stbir__inline static int stbir__edge_wrap(stbir_edge edge, int n, int max)

-{

-    // avoid per-pixel switch

-    if (n >= 0 && n < max)

-        return n;

-    return stbir__edge_wrap_slow(edge, n, max);

-}

+#define stbir__edge_wrap(edge, n, max) \

+    (((n) >= 0 && (n) < (max)) ? (n) : stbir__edge_wrap_slow((edge), (n), (max)))

+    // ^ avoid per-pixel switch ^

 // What input pixels contribute to this output pixel?

 static void stbir__calculate_sample_range_upsample(int n, float out_filter_radius, float scale_ratio, float out_shift, int* in_first_pixel, int* in_last_pixel, float* in_center_of_out)