From 8a58a48d86cf4daf9edb8de95e857477996deb96 Mon Sep 17 00:00:00 2001 From: =?utf8?q?=C3=98yvind=20Kol=C3=A5s?= Date: Wed, 4 Apr 2018 14:09:54 +0200 Subject: [PATCH] extensions: add rgba8_rgb8 conversion that copies 24/32bit chunks Slightly speeding up RGB u8 (without alpha) painting in GIMP, the rgba to rgb and reverse conversions are used together with the very fast SIMD conversions that operate on chunks of 4 components. --- extensions/gegl-fixups.c | 19 +++++++++++++++++-- 1 file changed, 17 insertions(+), 2 deletions(-) diff --git a/extensions/gegl-fixups.c b/extensions/gegl-fixups.c index e3bb836..d6ad912 100644 --- a/extensions/gegl-fixups.c +++ b/extensions/gegl-fixups.c @@ -447,6 +447,22 @@ conv_rgbAF_lrgba8 (const Babl *conversion,unsigned char *srcc, } } +static void +conv_rgba8_rgb8 (const Babl *conversion,unsigned char *src, unsigned char *dst, long samples) +{ + long n = samples - 1; + + while (n--) + { + *(unsigned int *) dst = (*(unsigned int *) src); + src += 3; + dst += 4; + } + dst[0] = src[0]; + dst[1] = src[1]; + dst[2] = src[2]; +} + #define conv_rgb8_rgbAF conv_rgb8_rgbaF #define conv_gamma_rgbaF_gamma_rgbAF conv_rgbaF_rgbAF #define conv_gamma_rgbAF_gamma_rgbaF conv_rgbAF_rgbaF @@ -531,10 +547,8 @@ init (void) o (rgbaF, rgbAF); o (rgbAF, rgbaF); - o (gamma_rgbaF, gamma_rgbAF); o (gamma_rgbAF, gamma_rgbaF); - o (rgbAF, lrgba8); o (rgb8, rgbaF); o (rgb8, rgbAF); @@ -542,6 +556,7 @@ init (void) o (rgbaF, rgb8); o (rgbAF, rgb8); o (bgrA8, rgba8); + o (rgba8, rgb8); return 0; } -- 2.30.2