diff options
Diffstat (limited to '3rdparty/SDL2/src/video/SDL_blit_copy.c')
-rw-r--r-- | 3rdparty/SDL2/src/video/SDL_blit_copy.c | 162 |
1 files changed, 0 insertions, 162 deletions
diff --git a/3rdparty/SDL2/src/video/SDL_blit_copy.c b/3rdparty/SDL2/src/video/SDL_blit_copy.c deleted file mode 100644 index 674650dd92c..00000000000 --- a/3rdparty/SDL2/src/video/SDL_blit_copy.c +++ /dev/null @@ -1,162 +0,0 @@ -/* - Simple DirectMedia Layer - Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org> - - 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. -*/ -#include "../SDL_internal.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 SDL_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 -static SDL_INLINE void -SDL_memcpyMMX(Uint8 * dst, const Uint8 * src, int len) -{ - const int remain = (len & 63); - int i; - - __m64* d64 = (__m64*)dst; - __m64* s64 = (__m64*)src; - - for(i= len / 64; i--;) { - d64[0] = s64[0]; - d64[1] = s64[1]; - d64[2] = s64[2]; - d64[3] = s64[3]; - d64[4] = s64[4]; - d64[5] = s64[5]; - d64[6] = s64[6]; - d64[7] = s64[7]; - - d64 += 8; - s64 += 8; - } - - if (remain) - { - const int skip = len - remain; - SDL_memcpy(dst + skip, src + skip, remain); - } -} -#endif /* __MMX__ */ - -void -SDL_BlitCopy(SDL_BlitInfo * info) -{ - SDL_bool overlap; - 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; - - /* Properly handle overlapping blits */ - if (src < dst) { - overlap = (dst < (src + h*srcskip)); - } else { - overlap = (src < (dst + h*dstskip)); - } - if (overlap) { - if ( dst < src ) { - while ( h-- ) { - SDL_memmove(dst, src, w); - src += srcskip; - dst += dstskip; - } - } else { - src += ((h-1) * srcskip); - dst += ((h-1) * dstskip); - while ( h-- ) { - SDL_memmove(dst, src, w); - src -= srcskip; - dst -= dstskip; - } - } - return; - } - -#ifdef __SSE__ - if (SDL_HasSSE() && - !((uintptr_t) src & 15) && !(srcskip & 15) && - !((uintptr_t) dst & 15) && !(dstskip & 15)) { - while (h--) { - SDL_memcpySSE(dst, src, w); - src += srcskip; - dst += dstskip; - } - return; - } -#endif - -#ifdef __MMX__ - if (SDL_HasMMX() && !(srcskip & 7) && !(dstskip & 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; - } -} - -/* vi: set ts=4 sw=4 expandtab: */ |