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author | neonloop | 2021-10-20 14:54:27 +0000 |
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committer | neonloop | 2021-10-20 14:54:27 +0000 |
commit | ea1947ffcc606d757357398b24e74a3f4ecefa07 (patch) | |
tree | 2031b8d4fc4c61063c710a7148378f57e662efbd /modules/librender/scaler_scanline.c | |
download | bennugd-ea1947ffcc606d757357398b24e74a3f4ecefa07.tar.gz bennugd-ea1947ffcc606d757357398b24e74a3f4ecefa07.tar.bz2 bennugd-ea1947ffcc606d757357398b24e74a3f4ecefa07.zip |
Initial commit from steward-fu releasemain
Diffstat (limited to 'modules/librender/scaler_scanline.c')
-rw-r--r-- | modules/librender/scaler_scanline.c | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/modules/librender/scaler_scanline.c b/modules/librender/scaler_scanline.c new file mode 100644 index 0000000..93242f2 --- /dev/null +++ b/modules/librender/scaler_scanline.c @@ -0,0 +1,65 @@ +/* + * Copyright © 2006-2016 SplinterGU (Fenix/Bennugd) + * Copyright © 2002-2006 Fenix Team (Fenix) + * Copyright © 1999-2002 José Luis Cebrián Pagüe (Fenix) + * + * This file is part of Bennu - Game Development + * + * This software is provided 'as-is', without any express or implied + * warranty. In no event will the authors be held liable for any damages + * arising from the use of this software. + * + * Permission is granted to anyone to use this software for any purpose, + * including commercial applications, and to alter it and redistribute it + * freely, subject to the following restrictions: + * + * 1. The origin of this software must not be misrepresented; you must not + * claim that you wrote the original software. If you use this software + * in a product, an acknowledgment in the product documentation would be + * appreciated but is not required. + * + * 2. Altered source versions must be plainly marked as such, and must not be + * misrepresented as being the original software. + * + * 3. This notice may not be removed or altered from any source + * distribution. + * + */ + +/* By Splinter 2007 */ + +#include <assert.h> +#include <stdlib.h> +#include <string.h> + +/* --------------------------------------------------------------------------- */ + +#include "librender.h" + +/* --------------------------------------------------------------------------- */ + +void scanline2x( uint8_t *srcPtr, uint32_t srcPitch, uint8_t *dstPtr, uint32_t dstPitch, int width, int height ) +{ + const uint32_t nextlineSrc = srcPitch / sizeof( uint16_t ); + const uint16_t *p = ( const uint16_t * )srcPtr; + + const uint32_t nextlineDst = dstPitch / sizeof( uint16_t ); + uint16_t *q = ( uint16_t * )dstPtr; + + while ( height-- ) + { + int tmpWidth = width; + while ( tmpWidth-- ) + { + *q = *p; + *( q + nextlineDst ) = 0; + q++; + *q = *p; + *( q + nextlineDst ) = 0; + q++; + p++; + } + p += nextlineSrc - width; + q += ( nextlineDst - width ) * 2; + } +} |