From bad415401a0bc6e67466138245ccb4dac6677be4 Mon Sep 17 00:00:00 2001
From: Ryan Oldenburg <guzba8@gmail.com>
Date: Wed, 9 Dec 2020 01:18:57 -0600
Subject: [PATCH] benchmarking blends

---
 src/pixie/blends.nim       |  3 +++
 tests/benchmark_blends.nim | 16 ++++++++++++++++
 2 files changed, 19 insertions(+)
 create mode 100644 tests/benchmark_blends.nim

diff --git a/src/pixie/blends.nim b/src/pixie/blends.nim
index be23947..f005234 100644
--- a/src/pixie/blends.nim
+++ b/src/pixie/blends.nim
@@ -326,18 +326,21 @@ proc blendNormal(a, b: ColorRGBA): ColorRGBA =
   result.g = b.g
   result.b = b.b
   result = alphaFix(a, b, result)
+  # blendNormalFloats(a.color, b.color).rgba
 
 proc blendDarken(a, b: ColorRGBA): ColorRGBA =
   result.r = min(a.r, b.r)
   result.g = min(a.g, b.g)
   result.b = min(a.b, b.b)
   result = alphaFix(a, b, result)
+  # blendDarkenFloats(a.color, b.color).rgba
 
 proc blendMultiply(a, b: ColorRGBA): ColorRGBA =
   result.r = ((a.r.uint32 * b.r.uint32) div 255).uint8
   result.g = ((a.g.uint32 * b.g.uint32) div 255).uint8
   result.b = ((a.b.uint32 * b.b.uint32) div 255).uint8
   result = alphaFix(a, b, result)
+  # blendMultiplyFloats(a.color, b.color).rgba
 
 proc blendLinearBurn(a, b: ColorRGBA): ColorRGBA =
   result.r = max(0, a.r.int32 + b.r.int32 - 255).uint8
diff --git a/tests/benchmark_blends.nim b/tests/benchmark_blends.nim
new file mode 100644
index 0000000..520dad6
--- /dev/null
+++ b/tests/benchmark_blends.nim
@@ -0,0 +1,16 @@
+import benchy, chroma, pixie, vmath
+
+let
+  a = newImage(1000, 1000)
+  b = newImage(1000, 1000)
+
+b.fill(rgba(127, 127, 127, 255))
+
+timeIt "bmNormal":
+  a.draw(b, vec2(0, 0), bmNormal)
+
+timeIt "bmDarken":
+  a.draw(b, vec2(0, 0), bmDarken)
+
+timeIt "bmMultiply":
+  a.draw(b, vec2(0, 0), bmMultiply)