Mercurial > sdl-ios-xcode
view src/video/SDL_blit_copy.c @ 2825:620a91b6d263
Date: Tue, 02 Dec 2008 23:38:26 +0100
From: Couriersud
Subject: Re: SDL: Keyboard layout unknown
I have attached a diff which will add an additional keyboard layout to
the x11 driver. The issue arose, when I moved to ubuntu intrepid. I was
only able to map the keys available on my keyboard. The differences to
the existing keyboard was the mapping of HOME,UP,DOWN and some other
keys.
Now only one issue remains. Dead keys (e.g. ^, ` ') on european
keyboards do not generate a "scancode" event. Just a text event when the
key is composed (e.g. ?? ?? ??).
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Wed, 03 Dec 2008 04:32:24 +0000 |
parents | cc15254e44b6 |
children | cd4a49d5c1ba |
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/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2006 Sam Lantinga This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA Sam Lantinga slouken@libsdl.org */ #include "SDL_config.h" #include "SDL_video.h" #include "SDL_blit.h" #include "SDL_blit_copy.h" #ifdef __SSE__ /* This assumes 16-byte aligned src and dst */ static __inline__ void SDL_memcpySSE(Uint8 * dst, const Uint8 * src, int len) { int i; __m128 values[4]; for (i = len / 64; i--;) { _mm_prefetch(src, _MM_HINT_NTA); values[0] = *(__m128 *) (src + 0); values[1] = *(__m128 *) (src + 16); values[2] = *(__m128 *) (src + 32); values[3] = *(__m128 *) (src + 48); _mm_stream_ps((float *) (dst + 0), values[0]); _mm_stream_ps((float *) (dst + 16), values[1]); _mm_stream_ps((float *) (dst + 32), values[2]); _mm_stream_ps((float *) (dst + 48), values[3]); src += 64; dst += 64; } if (len & 63) SDL_memcpy(dst, src, len & 63); } #endif /* __SSE__ */ #ifdef __MMX__ #ifdef _MSC_VER #pragma warning(disable:4799) #endif /* This assumes 8-byte aligned src and dst */ static __inline__ void SDL_memcpyMMX(Uint8 * dst, const Uint8 * src, int len) { int i; __m64 values[8]; for (i = len / 64; i--;) { _mm_prefetch(src, _MM_HINT_NTA); values[0] = *(__m64 *) (src + 0); values[1] = *(__m64 *) (src + 8); values[2] = *(__m64 *) (src + 16); values[3] = *(__m64 *) (src + 24); values[4] = *(__m64 *) (src + 32); values[5] = *(__m64 *) (src + 40); values[6] = *(__m64 *) (src + 48); values[7] = *(__m64 *) (src + 56); _mm_stream_pi((__m64 *) (dst + 0), values[0]); _mm_stream_pi((__m64 *) (dst + 8), values[1]); _mm_stream_pi((__m64 *) (dst + 16), values[2]); _mm_stream_pi((__m64 *) (dst + 24), values[3]); _mm_stream_pi((__m64 *) (dst + 32), values[4]); _mm_stream_pi((__m64 *) (dst + 40), values[5]); _mm_stream_pi((__m64 *) (dst + 48), values[6]); _mm_stream_pi((__m64 *) (dst + 56), values[7]); src += 64; dst += 64; } if (len & 63) SDL_memcpy(dst, src, len & 63); } #endif /* __MMX__ */ void SDL_BlitCopy(SDL_BlitInfo * info) { Uint8 *src, *dst; int w, h; int srcskip, dstskip; w = info->dst_w * info->dst_fmt->BytesPerPixel; h = info->dst_h; src = info->src; dst = info->dst; srcskip = info->src_pitch; dstskip = info->dst_pitch; #ifdef __SSE__ if (SDL_HasSSE() && !((uintptr_t) src & 15) && !((uintptr_t) dst & 15)) { while (h--) { SDL_memcpySSE(dst, src, w); src += srcskip; dst += dstskip; } return; } #endif #ifdef __MMX__ if (SDL_HasMMX() && !((uintptr_t) src & 7) && !((uintptr_t) dst & 7)) { while (h--) { SDL_memcpyMMX(dst, src, w); src += srcskip; dst += dstskip; } _mm_empty(); return; } #endif while (h--) { SDL_memcpy(dst, src, w); src += srcskip; dst += dstskip; } } void SDL_BlitCopyOverlap(SDL_BlitInfo * info) { Uint8 *src, *dst; int w, h; int skip; w = info->dst_w * info->dst_fmt->BytesPerPixel; h = info->dst_h; src = info->src; dst = info->dst; skip = info->src_pitch; if ((dst < src) || (dst >= (src + h * skip))) { SDL_BlitCopy(info); } else { src += ((h - 1) * skip); dst += ((h - 1) * skip); while (h--) { SDL_revcpy(dst, src, w); src -= skip; dst -= skip; } } } /* vi: set ts=4 sw=4 expandtab: */