From 9cd2e9ec8fc0127393dfce9c0359d500c8c238be Mon Sep 17 00:00:00 2001
From: Edward Rudd <urkle@outoforder.cc>
Date: Tue, 09 Apr 2019 02:22:50 +0000
Subject: [PATCH] updae source to 2.0.9 source
---
source/src/video/SDL_blit_N.c | 53 +++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 53 insertions(+), 0 deletions(-)
diff --git a/source/src/video/SDL_blit_N.c b/source/src/video/SDL_blit_N.c
index 441cd9a..d6ec417 100644
--- a/source/src/video/SDL_blit_N.c
+++ b/source/src/video/SDL_blit_N.c
@@ -2333,6 +2333,31 @@
/* Set up some basic variables */
ckey &= rgbmask;
+ /* Fastpath: same source/destination format, no Amask, bpp 32, loop is vectorized. ~10x faster */
+ if (srcfmt->format == dstfmt->format &&
+ (srcfmt->format == SDL_PIXELFORMAT_RGB888 || srcfmt->format == SDL_PIXELFORMAT_BGR888)) {
+ Uint32 *src32 = (Uint32*)src;
+ Uint32 *dst32 = (Uint32*)dst;
+ srcskip /= sizeof(Uint32);
+ dstskip /= sizeof(Uint32);
+ while (height--) {
+ /* *INDENT-OFF* */
+ DUFFS_LOOP(
+ {
+ if (*src32 != ckey) {
+ *dst32 = *src32;
+ }
+ ++src32;
+ ++dst32;
+ },
+ width);
+ /* *INDENT-ON* */
+ src32 += srcskip;
+ dst32 += dstskip;
+ }
+ return;
+ }
+
while (height--) {
/* *INDENT-OFF* */
DUFFS_LOOP(
@@ -2380,6 +2405,34 @@
dstbpp = dstfmt->BytesPerPixel;
ckey &= rgbmask;
+ /* Fastpath: same source/destination format, with Amask, bpp 32, loop is vectorized. ~10x faster */
+ if (srcfmt->format == dstfmt->format &&
+ (srcfmt->format == SDL_PIXELFORMAT_ARGB8888 ||
+ srcfmt->format == SDL_PIXELFORMAT_ABGR8888 ||
+ srcfmt->format == SDL_PIXELFORMAT_BGRA8888 ||
+ srcfmt->format == SDL_PIXELFORMAT_RGBA8888)) {
+ Uint32 *src32 = (Uint32*)src;
+ Uint32 *dst32 = (Uint32*)dst;
+ srcskip /= sizeof(Uint32);
+ dstskip /= sizeof(Uint32);
+ while (height--) {
+ /* *INDENT-OFF* */
+ DUFFS_LOOP(
+ {
+ if ((*src32 & rgbmask) != ckey) {
+ *dst32 = *src32;
+ }
+ ++src32;
+ ++dst32;
+ },
+ width);
+ /* *INDENT-ON* */
+ src32 += srcskip;
+ dst32 += dstskip;
+ }
+ return;
+ }
+
while (height--) {
/* *INDENT-OFF* */
DUFFS_LOOP(
--
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