From 1c8aa83c0ae5905252efa79f105ccdca7342c93b Mon Sep 17 00:00:00 2001
From: Ryan Oldenburg <guzba8@gmail.com>
Date: Fri, 22 Jan 2021 22:54:57 -0600
Subject: [PATCH] better blend benchmarking

---
 tests/benchmark_blends.nim | 322 ++++++++++++++++++++++++++-----------
 1 file changed, 229 insertions(+), 93 deletions(-)

diff --git a/tests/benchmark_blends.nim b/tests/benchmark_blends.nim
index 666d51c..8febace 100644
--- a/tests/benchmark_blends.nim
+++ b/tests/benchmark_blends.nim
@@ -1,185 +1,321 @@
-import benchy, chroma, vmath
+import benchy, chroma, vmath, pixie/images
 
 include pixie/blends
 
-const iterations = 1_000_000
-
 let
-  a = rgba(100, 200, 100, 255)
-  b = rgba(25, 33, 100, 127)
+  backdrop = newImage(256, 256)
+  source = newImage(256, 256)
+source.fill(rgba(100, 100, 100, 100))
+
+template reset() =
+  backdrop.fill(rgba(0, 0, 0, 255))
+
+reset()
 
 timeIt "blendNormal":
-  for i in 0 ..< iterations:
-    keep blendNormal(a, b)
+  for i in 0 ..< backdrop.data.len:
+    backdrop.data[i] = blendNormal(backdrop.data[i], source.data[i])
+
+reset()
 
 timeIt "blendNormalFloats":
-  for i in 0 ..< iterations:
-    keep blendNormalFloats(a.color, b.color).rgba
+  for i in 0 ..< backdrop.data.len:
+    backdrop.data[i] = blendNormalFloats(
+      backdrop.data[i].color, source.data[i].color
+    ).rgba
+
+reset()
 
 timeIt "blendDarken":
-  for i in 0 ..< iterations:
-    keep blendDarken(a, b)
+  for i in 0 ..< backdrop.data.len:
+    backdrop.data[i] = blendDarken(backdrop.data[i], source.data[i])
+
+reset()
 
 timeIt "blendDarkenFloats":
-  for i in 0 ..< iterations:
-    keep blendDarkenFloats(a.color, b.color).rgba
+  for i in 0 ..< backdrop.data.len:
+    backdrop.data[i] = blendDarkenFloats(
+      backdrop.data[i].color, source.data[i].color
+    ).rgba
+
+reset()
 
 timeIt "blendMultiply":
-  for i in 0 ..< iterations:
-    keep blendMultiply(a, b)
+  for i in 0 ..< backdrop.data.len:
+    backdrop.data[i] = blendMultiply(backdrop.data[i], source.data[i])
+
+reset()
 
 timeIt "blendMultiplyFloats":
-  for i in 0 ..< iterations:
-    keep blendMultiplyFloats(a.color, b.color).rgba
+  for i in 0 ..< backdrop.data.len:
+    backdrop.data[i] = blendMultiplyFloats(
+      backdrop.data[i].color, source.data[i].color
+    ).rgba
+
+reset()
 
 timeIt "blendLinearBurn":
-  for i in 0 ..< iterations:
-    keep blendLinearBurn(a, b)
+  for i in 0 ..< backdrop.data.len:
+    backdrop.data[i] = blendLinearBurn(backdrop.data[i], source.data[i])
+
+reset()
 
 timeIt "blendLinearBurnFloats":
-  for i in 0 ..< iterations:
-    keep blendLinearBurnFloats(a.color, b.color).rgba
+  for i in 0 ..< backdrop.data.len:
+    backdrop.data[i] = blendLinearBurnFloats(
+      backdrop.data[i].color, source.data[i].color
+    ).rgba
+
+reset()
 
 timeIt "blendColorBurn":
-  for i in 0 ..< iterations:
-    keep blendColorBurn(a, b)
+  for i in 0 ..< backdrop.data.len:
+    backdrop.data[i] = blendColorBurn(backdrop.data[i], source.data[i])
+
+reset()
 
 timeIt "blendColorBurnFloats":
-  for i in 0 ..< iterations:
-    keep blendColorBurnFloats(a.color, b.color).rgba
+  for i in 0 ..< backdrop.data.len:
+    backdrop.data[i] = blendColorBurnFloats(
+      backdrop.data[i].color, source.data[i].color
+    ).rgba
+
+reset()
 
 timeIt "blendLighten":
-  for i in 0 ..< iterations:
-    keep blendLighten(a, b)
+  for i in 0 ..< backdrop.data.len:
+    backdrop.data[i] = blendLighten(backdrop.data[i], source.data[i])
+
+reset()
 
 timeIt "blendLightenFloats":
-  for i in 0 ..< iterations:
-    keep blendLightenFloats(a.color, b.color).rgba
+  for i in 0 ..< backdrop.data.len:
+    backdrop.data[i] = blendLightenFloats(
+      backdrop.data[i].color, source.data[i].color
+    ).rgba
+
+reset()
 
 timeIt "blendScreen":
-  for i in 0 ..< iterations:
-    keep blendScreen(a, b)
+  for i in 0 ..< backdrop.data.len:
+    backdrop.data[i] = blendScreen(backdrop.data[i], source.data[i])
+
+reset()
 
 timeIt "blendScreenFloats":
-  for i in 0 ..< iterations:
-    keep blendScreenFloats(a.color, b.color).rgba
+  for i in 0 ..< backdrop.data.len:
+    backdrop.data[i] = blendScreenFloats(
+      backdrop.data[i].color, source.data[i].color
+    ).rgba
+
+reset()
 
 timeIt "blendLinearDodge":
-  for i in 0 ..< iterations:
-    keep blendLinearDodge(a, b)
+  for i in 0 ..< backdrop.data.len:
+    backdrop.data[i] = blendLinearDodge(backdrop.data[i], source.data[i])
+
+reset()
 
 timeIt "blendLinearDodgeFloats":
-  for i in 0 ..< iterations:
-    keep blendLinearDodgeFloats(a.color, b.color).rgba
+  for i in 0 ..< backdrop.data.len:
+    backdrop.data[i] = blendLinearDodgeFloats(
+      backdrop.data[i].color, source.data[i].color
+    ).rgba
+
+reset()
 
 timeIt "blendColorDodge":
-  for i in 0 ..< iterations:
-    keep blendColorDodge(a, b)
+  for i in 0 ..< backdrop.data.len:
+    backdrop.data[i] = blendColorDodge(backdrop.data[i], source.data[i])
+
+reset()
 
 timeIt "blendColorDodgeFloats":
-  for i in 0 ..< iterations:
-    keep blendColorDodgeFloats(a.color, b.color).rgba
+  for i in 0 ..< backdrop.data.len:
+    backdrop.data[i] = blendColorDodgeFloats(
+      backdrop.data[i].color, source.data[i].color
+    ).rgba
+
+reset()
 
 timeIt "blendOverlay":
-  for i in 0 ..< iterations:
-    keep blendOverlay(a, b)
+  for i in 0 ..< backdrop.data.len:
+    backdrop.data[i] = blendOverlay(backdrop.data[i], source.data[i])
+
+reset()
 
 timeIt "blendOverlayFloats":
-  for i in 0 ..< iterations:
-    keep blendOverlayFloats(a.color, b.color).rgba
+  for i in 0 ..< backdrop.data.len:
+    backdrop.data[i] = blendOverlayFloats(
+      backdrop.data[i].color, source.data[i].color
+    ).rgba
+
+reset()
 
 timeIt "blendSoftLight":
-  for i in 0 ..< iterations:
-    keep blendSoftLight(a, b)
+  for i in 0 ..< backdrop.data.len:
+    backdrop.data[i] = blendSoftLight(backdrop.data[i], source.data[i])
+
+reset()
 
 timeIt "blendSoftLightFloats":
-  for i in 0 ..< iterations:
-    keep blendSoftLightFloats(a.color, b.color).rgba
+  for i in 0 ..< backdrop.data.len:
+    backdrop.data[i] = blendSoftLightFloats(
+      backdrop.data[i].color, source.data[i].color
+    ).rgba
+
+reset()
 
 timeIt "blendHardLight":
-  for i in 0 ..< iterations:
-    keep blendHardLight(a, b)
+  for i in 0 ..< backdrop.data.len:
+    backdrop.data[i] = blendHardLight(backdrop.data[i], source.data[i])
+
+reset()
 
 timeIt "blendHardLightFloats":
-  for i in 0 ..< iterations:
-    keep blendHardLightFloats(a.color, b.color).rgba
+  for i in 0 ..< backdrop.data.len:
+    backdrop.data[i] = blendHardLightFloats(
+      backdrop.data[i].color, source.data[i].color
+    ).rgba
+
+reset()
 
 timeIt "blendDifference":
-  for i in 0 ..< iterations:
-    keep blendDifference(a, b)
+  for i in 0 ..< backdrop.data.len:
+    backdrop.data[i] = blendDifference(backdrop.data[i], source.data[i])
+
+reset()
 
 timeIt "blendDifferenceFloats":
-  for i in 0 ..< iterations:
-    keep blendDifferenceFloats(a.color, b.color).rgba
+  for i in 0 ..< backdrop.data.len:
+    backdrop.data[i] = blendDifferenceFloats(
+      backdrop.data[i].color, source.data[i].color
+    ).rgba
+
+reset()
 
 timeIt "blendExclusion":
-  for i in 0 ..< iterations:
-    keep blendExclusion(a, b)
+  for i in 0 ..< backdrop.data.len:
+    backdrop.data[i] = blendExclusion(backdrop.data[i], source.data[i])
+
+reset()
 
 timeIt "blendExclusionFloats":
-  for i in 0 ..< iterations:
-    keep blendExclusionFloats(a.color, b.color).rgba
+  for i in 0 ..< backdrop.data.len:
+    backdrop.data[i] = blendExclusionFloats(
+      backdrop.data[i].color, source.data[i].color
+    ).rgba
+
+reset()
 
 timeIt "blendHue":
-  for i in 0 ..< iterations:
-    keep blendHue(a, b)
+  for i in 0 ..< backdrop.data.len:
+    backdrop.data[i] = blendHue(backdrop.data[i], source.data[i])
+
+reset()
 
 timeIt "blendHueFloats":
-  for i in 0 ..< iterations:
-    keep blendHueFloats(a.color, b.color).rgba
+  for i in 0 ..< backdrop.data.len:
+    backdrop.data[i] = blendHueFloats(
+      backdrop.data[i].color, source.data[i].color
+    ).rgba
+
+reset()
 
 timeIt "blendSaturation":
-  for i in 0 ..< iterations:
-    keep blendSaturation(a, b)
+  for i in 0 ..< backdrop.data.len:
+    backdrop.data[i] = blendSaturation(backdrop.data[i], source.data[i])
+
+reset()
 
 timeIt "blendSaturationFloats":
-  for i in 0 ..< iterations:
-    keep blendSaturationFloats(a.color, b.color).rgba
+  for i in 0 ..< backdrop.data.len:
+    backdrop.data[i] = blendSaturationFloats(
+      backdrop.data[i].color, source.data[i].color
+    ).rgba
+
+reset()
 
 timeIt "blendColor":
-  for i in 0 ..< iterations:
-    keep blendColor(a, b)
+  for i in 0 ..< backdrop.data.len:
+    backdrop.data[i] = blendColor(backdrop.data[i], source.data[i])
+
+reset()
 
 timeIt "blendColorFloats":
-  for i in 0 ..< iterations:
-    keep blendColorFloats(a.color, b.color).rgba
+  for i in 0 ..< backdrop.data.len:
+    backdrop.data[i] = blendColorFloats(
+      backdrop.data[i].color, source.data[i].color
+    ).rgba
+
+reset()
 
 timeIt "blendLuminosity":
-  for i in 0 ..< iterations:
-    keep blendLuminosity(a, b)
+  for i in 0 ..< backdrop.data.len:
+    backdrop.data[i] = blendLuminosity(backdrop.data[i], source.data[i])
+
+reset()
 
 timeIt "blendLuminosityFloats":
-  for i in 0 ..< iterations:
-    keep blendLuminosityFloats(a.color, b.color).rgba
+  for i in 0 ..< backdrop.data.len:
+    backdrop.data[i] = blendLuminosityFloats(
+      backdrop.data[i].color, source.data[i].color
+    ).rgba
+
+reset()
 
 timeIt "blendMask":
-  for i in 0 ..< iterations:
-    keep blendMask(a, b)
+  for i in 0 ..< backdrop.data.len:
+    backdrop.data[i] = blendMask(backdrop.data[i], source.data[i])
+
+reset()
 
 timeIt "blendMaskFloats":
-  for i in 0 ..< iterations:
-    keep blendMaskFloats(a.color, b.color).rgba
+  for i in 0 ..< backdrop.data.len:
+    backdrop.data[i] = blendMaskFloats(
+      backdrop.data[i].color, source.data[i].color
+    ).rgba
+
+reset()
 
 timeIt "blendSubtractMask":
-  for i in 0 ..< iterations:
-    keep blendSubtractMask(a, b)
+  for i in 0 ..< backdrop.data.len:
+    backdrop.data[i] = blendSubtractMask(backdrop.data[i], source.data[i])
+
+reset()
 
 timeIt "blendSubtractMaskFloats":
-  for i in 0 ..< iterations:
-    keep blendSubtractMaskFloats(a.color, b.color).rgba
+  for i in 0 ..< backdrop.data.len:
+    backdrop.data[i] = blendSubtractMaskFloats(
+      backdrop.data[i].color, source.data[i].color
+    ).rgba
+
+reset()
 
 timeIt "blendIntersectMask":
-  for i in 0 ..< iterations:
-    keep blendIntersectMask(a, b)
+  for i in 0 ..< backdrop.data.len:
+    backdrop.data[i] = blendIntersectMask(backdrop.data[i], source.data[i])
+
+reset()
 
 timeIt "blendIntersectMaskFloats":
-  for i in 0 ..< iterations:
-    keep blendIntersectMaskFloats(a.color, b.color).rgba
+  for i in 0 ..< backdrop.data.len:
+    backdrop.data[i] = blendIntersectMaskFloats(
+      backdrop.data[i].color, source.data[i].color
+    ).rgba
+
+reset()
 
 timeIt "blendExcludeMask":
-  for i in 0 ..< iterations:
-    keep blendExcludeMask(a, b)
+  for i in 0 ..< backdrop.data.len:
+    backdrop.data[i] = blendExcludeMask(backdrop.data[i], source.data[i])
+
+reset()
 
 timeIt "blendExcludeMaskFloats":
-  for i in 0 ..< iterations:
-    keep blendExcludeMaskFloats(a.color, b.color).rgba
+  for i in 0 ..< backdrop.data.len:
+    backdrop.data[i] = blendExcludeMaskFloats(
+      backdrop.data[i].color, source.data[i].color
+    ).rgba
+
+reset()