From 2ab6c7e35ca208a91fbc2aac25203df07b72b692 Mon Sep 17 00:00:00 2001
From: Ryan Oldenburg <ryan@guzba.com>
Date: Thu, 16 Dec 2021 21:56:01 -0600
Subject: [PATCH] simpler source position when not rotated or scaled
---
src/pixie/images.nim | 42 ++++++++++++++----------------------------
1 file changed, 14 insertions(+), 28 deletions(-)
diff --git a/src/pixie/images.nim b/src/pixie/images.nim
index e2c3e8c..af5972a 100644
--- a/src/pixie/images.nim
+++ b/src/pixie/images.nim
@@ -696,7 +696,7 @@ proc drawUber(
filterBy2 *= 2
let
- hasRotation = not(dx == vec2(1, 0) and dy == vec2(0, 1))
+ hasRotationOrScaling = not(dx == vec2(1, 0) and dy == vec2(0, 1))
smooth = not(
dx.length == 1.0 and
dy.length == 1.0 and
@@ -740,7 +740,7 @@ proc drawUber(
xMax = max(xMax, at.x)
var xStart, xStop: int
- if hasRotation or smooth:
+ if hasRotationOrScaling or smooth:
xStart = xMin.floor.int
xStop = xMax.ceil.int
else:
@@ -786,14 +786,15 @@ proc drawUber(
else:
var x = xStart
- if not hasRotation:
+ if not hasRotationOrScaling:
+ let
+ srcPos = p + dx * x.float32 + dy * y.float32
+ sy = srcPos.y.int
+ var sx = srcPos.x.int
+
when type(a) is Image and type(b) is Image:
if blendMode in {bmNormal, bmOverwrite} and
isOpaque(b.data, b.dataIndex(xStart, y), xStop - xStart):
- let
- srcPos = p + dx * x.float32 + dy * y.float32
- sx = srcPos.x.int
- sy = srcPos.y.int
copyMem(
a.data[a.dataIndex(x, y)].addr,
b.data[b.dataIndex(sx, sy)].addr,
@@ -805,10 +806,6 @@ proc drawUber(
case blendMode:
of bmOverwrite:
for _ in 0 ..< (xStop - xStart) div 16:
- let
- srcPos = p + dx * x.float32 + dy * y.float32
- sx = srcPos.x.int
- sy = srcPos.y.int
when type(a) is Image:
when type(b) is Image:
for q in [0, 4, 8, 12]:
@@ -833,13 +830,10 @@ proc drawUber(
let sourceVec = mm_loadu_si128(b.data[b.dataIndex(sx, sy)].addr)
mm_storeu_si128(a.data[a.dataIndex(x, y)].addr, sourceVec)
x += 16
+ sx += 16
of bmNormal:
let vec255 = mm_set1_epi32(cast[int32](uint32.high))
for _ in 0 ..< (xStop - xStart) div 16:
- let
- srcPos = p + dx * x.float32 + dy * y.float32
- sx = srcPos.x.int
- sy = srcPos.y.int
when type(a) is Image:
when type(b) is Image:
for q in [0, 4, 8, 12]:
@@ -884,13 +878,10 @@ proc drawUber(
maskNormalInlineSimd(backdropVec, sourceVec)
)
x += 16
+ sx += 16
of bmMask:
let vec255 = mm_set1_epi32(cast[int32](uint32.high))
for _ in 0 ..< (xStop - xStart) div 16:
- let
- srcPos = p + dx * x.float32 + dy * y.float32
- sx = srcPos.x.int
- sy = srcPos.y.int
when type(a) is Image:
when type(b) is Image:
for q in [0, 4, 8, 12]:
@@ -933,15 +924,12 @@ proc drawUber(
maskMaskInlineSimd(backdropVec, sourceVec)
)
x += 16
+ sx += 16
else:
when type(a) is Image:
if blendMode.hasSimdBlender():
let blenderSimd = blendMode.blenderSimd()
for _ in 0 ..< (xStop - xStart) div 16:
- let
- srcPos = p + dx * x.float32 + dy * y.float32
- sx = srcPos.x.int
- sy = srcPos.y.int
when type(b) is Image:
for q in [0, 4, 8, 12]:
let
@@ -964,15 +952,12 @@ proc drawUber(
# Shuffle 32 bits off for the next iteration
values = mm_srli_si128(values, 4)
x += 16
+ sx += 16
else: # is a Mask
if blendMode.hasSimdMasker():
let maskerSimd = blendMode.maskerSimd()
for _ in 0 ..< (xStop - xStart) div 16:
- let
- srcPos = p + dx * x.float32 + dy * y.float32
- sx = srcPos.x.int
- sy = srcPos.y.int
- backdrop = mm_loadu_si128(a.data[a.dataIndex(x, y)].addr)
+ let backdrop = mm_loadu_si128(a.data[a.dataIndex(x, y)].addr)
when type(b) is Image:
# Need to read 16 colors and pack their alpha values
let
@@ -989,6 +974,7 @@ proc drawUber(
maskerSimd(backdrop, source)
)
x += 16
+ sx += 16
var srcPos = p + dx * x.float32 + dy * y.float32
srcPos = vec2(