Mercurial > sdl-ios-xcode
view src/video/SDL_blit_1.c @ 3415:1756b9569141
Adam Strzelecki to SDL
Actually after my patch commited in r4928 MinGW configure seems to generate broken Makefile due MSYS bash bug. (Attaching cure/patch below)
The problem is that:
TEST=`echo 'one\\
two\\
three\\'`
echo "$TEST"
Should echo:
one\
two\
three\
Does it on Linux, Mac.. all UNIX but not on MSYS (MinGW) which outputs:
one\two\three\
(new lines removed, probably it doesn't like backslashes)
Probably this bug should be submitted to MSYS team, but not waiting till MSYS gets it fixed (they have very slow release cycles) here goes simple cure...
My patch simply replaces single quoted SED rules where we needed newlien injection with double quoted ones.
Tested on Mac, Linux & MinGW. Please review it ASAP coz this may be showstopper for everybody compiling with MinGW.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Wed, 28 Oct 2009 04:27:50 +0000 |
parents | dc1eb82ffdaa |
children | f7b03b6838cb |
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/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2009 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_sysvideo.h" #include "SDL_endian.h" /* Functions to blit from 8-bit surfaces to other surfaces */ static void Blit1to1(SDL_BlitInfo * info) { #ifndef USE_DUFFS_LOOP int c; #endif int width, height; Uint8 *src, *map, *dst; int srcskip, dstskip; /* Set up some basic variables */ width = info->dst_w; height = info->dst_h; src = info->src; srcskip = info->src_skip; dst = info->dst; dstskip = info->dst_skip; map = info->table; while (height--) { #ifdef USE_DUFFS_LOOP /* *INDENT-OFF* */ DUFFS_LOOP( { *dst = map[*src]; } dst++; src++; , width); /* *INDENT-ON* */ #else for (c = width; c; --c) { *dst = map[*src]; dst++; src++; } #endif src += srcskip; dst += dstskip; } } /* This is now endian dependent */ #if ( SDL_BYTEORDER == SDL_LIL_ENDIAN ) #define HI 1 #define LO 0 #else /* ( SDL_BYTEORDER == SDL_BIG_ENDIAN ) */ #define HI 0 #define LO 1 #endif static void Blit1to2(SDL_BlitInfo * info) { #ifndef USE_DUFFS_LOOP int c; #endif int width, height; Uint8 *src, *dst; Uint16 *map; int srcskip, dstskip; /* Set up some basic variables */ width = info->dst_w; height = info->dst_h; src = info->src; srcskip = info->src_skip; dst = info->dst; dstskip = info->dst_skip; map = (Uint16 *) info->table; #ifdef USE_DUFFS_LOOP while (height--) { /* *INDENT-OFF* */ DUFFS_LOOP( { *(Uint16 *)dst = map[*src++]; dst += 2; }, width); /* *INDENT-ON* */ src += srcskip; dst += dstskip; } #else /* Memory align at 4-byte boundary, if necessary */ if ((long) dst & 0x03) { /* Don't do anything if width is 0 */ if (width == 0) { return; } --width; while (height--) { /* Perform copy alignment */ *(Uint16 *) dst = map[*src++]; dst += 2; /* Copy in 4 pixel chunks */ for (c = width / 4; c; --c) { *(Uint32 *) dst = (map[src[HI]] << 16) | (map[src[LO]]); src += 2; dst += 4; *(Uint32 *) dst = (map[src[HI]] << 16) | (map[src[LO]]); src += 2; dst += 4; } /* Get any leftovers */ switch (width & 3) { case 3: *(Uint16 *) dst = map[*src++]; dst += 2; case 2: *(Uint32 *) dst = (map[src[HI]] << 16) | (map[src[LO]]); src += 2; dst += 4; break; case 1: *(Uint16 *) dst = map[*src++]; dst += 2; break; } src += srcskip; dst += dstskip; } } else { while (height--) { /* Copy in 4 pixel chunks */ for (c = width / 4; c; --c) { *(Uint32 *) dst = (map[src[HI]] << 16) | (map[src[LO]]); src += 2; dst += 4; *(Uint32 *) dst = (map[src[HI]] << 16) | (map[src[LO]]); src += 2; dst += 4; } /* Get any leftovers */ switch (width & 3) { case 3: *(Uint16 *) dst = map[*src++]; dst += 2; case 2: *(Uint32 *) dst = (map[src[HI]] << 16) | (map[src[LO]]); src += 2; dst += 4; break; case 1: *(Uint16 *) dst = map[*src++]; dst += 2; break; } src += srcskip; dst += dstskip; } } #endif /* USE_DUFFS_LOOP */ } static void Blit1to3(SDL_BlitInfo * info) { #ifndef USE_DUFFS_LOOP int c; #endif int o; int width, height; Uint8 *src, *map, *dst; int srcskip, dstskip; /* Set up some basic variables */ width = info->dst_w; height = info->dst_h; src = info->src; srcskip = info->src_skip; dst = info->dst; dstskip = info->dst_skip; map = info->table; while (height--) { #ifdef USE_DUFFS_LOOP /* *INDENT-OFF* */ DUFFS_LOOP( { o = *src * 4; dst[0] = map[o++]; dst[1] = map[o++]; dst[2] = map[o++]; } src++; dst += 3; , width); /* *INDENT-ON* */ #else for (c = width; c; --c) { o = *src * 4; dst[0] = map[o++]; dst[1] = map[o++]; dst[2] = map[o++]; src++; dst += 3; } #endif /* USE_DUFFS_LOOP */ src += srcskip; dst += dstskip; } } static void Blit1to4(SDL_BlitInfo * info) { #ifndef USE_DUFFS_LOOP int c; #endif int width, height; Uint8 *src; Uint32 *map, *dst; int srcskip, dstskip; /* Set up some basic variables */ width = info->dst_w; height = info->dst_h; src = info->src; srcskip = info->src_skip; dst = (Uint32 *) info->dst; dstskip = info->dst_skip / 4; map = (Uint32 *) info->table; while (height--) { #ifdef USE_DUFFS_LOOP /* *INDENT-OFF* */ DUFFS_LOOP( *dst++ = map[*src++]; , width); /* *INDENT-ON* */ #else for (c = width / 4; c; --c) { *dst++ = map[*src++]; *dst++ = map[*src++]; *dst++ = map[*src++]; *dst++ = map[*src++]; } switch (width & 3) { case 3: *dst++ = map[*src++]; case 2: *dst++ = map[*src++]; case 1: *dst++ = map[*src++]; } #endif /* USE_DUFFS_LOOP */ src += srcskip; dst += dstskip; } } static void Blit1to1Key(SDL_BlitInfo * info) { int width = info->dst_w; int height = info->dst_h; Uint8 *src = info->src; int srcskip = info->src_skip; Uint8 *dst = info->dst; int dstskip = info->dst_skip; Uint8 *palmap = info->table; Uint32 ckey = info->colorkey; if (palmap) { while (height--) { /* *INDENT-OFF* */ DUFFS_LOOP( { if ( *src != ckey ) { *dst = palmap[*src]; } dst++; src++; }, width); /* *INDENT-ON* */ src += srcskip; dst += dstskip; } } else { while (height--) { /* *INDENT-OFF* */ DUFFS_LOOP( { if ( *src != ckey ) { *dst = *src; } dst++; src++; }, width); /* *INDENT-ON* */ src += srcskip; dst += dstskip; } } } static void Blit1to2Key(SDL_BlitInfo * info) { int width = info->dst_w; int height = info->dst_h; Uint8 *src = info->src; int srcskip = info->src_skip; Uint16 *dstp = (Uint16 *) info->dst; int dstskip = info->dst_skip; Uint16 *palmap = (Uint16 *) info->table; Uint32 ckey = info->colorkey; /* Set up some basic variables */ dstskip /= 2; while (height--) { /* *INDENT-OFF* */ DUFFS_LOOP( { if ( *src != ckey ) { *dstp=palmap[*src]; } src++; dstp++; }, width); /* *INDENT-ON* */ src += srcskip; dstp += dstskip; } } static void Blit1to3Key(SDL_BlitInfo * info) { int width = info->dst_w; int height = info->dst_h; Uint8 *src = info->src; int srcskip = info->src_skip; Uint8 *dst = info->dst; int dstskip = info->dst_skip; Uint8 *palmap = info->table; Uint32 ckey = info->colorkey; int o; while (height--) { /* *INDENT-OFF* */ DUFFS_LOOP( { if ( *src != ckey ) { o = *src * 4; dst[0] = palmap[o++]; dst[1] = palmap[o++]; dst[2] = palmap[o++]; } src++; dst += 3; }, width); /* *INDENT-ON* */ src += srcskip; dst += dstskip; } } static void Blit1to4Key(SDL_BlitInfo * info) { int width = info->dst_w; int height = info->dst_h; Uint8 *src = info->src; int srcskip = info->src_skip; Uint32 *dstp = (Uint32 *) info->dst; int dstskip = info->dst_skip; Uint32 *palmap = (Uint32 *) info->table; Uint32 ckey = info->colorkey; /* Set up some basic variables */ dstskip /= 4; while (height--) { /* *INDENT-OFF* */ DUFFS_LOOP( { if ( *src != ckey ) { *dstp = palmap[*src]; } src++; dstp++; }, width); /* *INDENT-ON* */ src += srcskip; dstp += dstskip; } } static void Blit1toNAlpha(SDL_BlitInfo * info) { int width = info->dst_w; int height = info->dst_h; Uint8 *src = info->src; int srcskip = info->src_skip; Uint8 *dst = info->dst; int dstskip = info->dst_skip; SDL_PixelFormat *dstfmt = info->dst_fmt; const SDL_Color *srcpal = info->src_fmt->palette->colors; int dstbpp; const int A = info->a; /* Set up some basic variables */ dstbpp = dstfmt->BytesPerPixel; while (height--) { int sR, sG, sB; int dR, dG, dB; /* *INDENT-OFF* */ DUFFS_LOOP4( { Uint32 pixel; sR = srcpal[*src].r; sG = srcpal[*src].g; sB = srcpal[*src].b; DISEMBLE_RGB(dst, dstbpp, dstfmt, pixel, dR, dG, dB); ALPHA_BLEND(sR, sG, sB, A, dR, dG, dB); ASSEMBLE_RGB(dst, dstbpp, dstfmt, dR, dG, dB); src++; dst += dstbpp; }, width); /* *INDENT-ON* */ src += srcskip; dst += dstskip; } } static void Blit1toNAlphaKey(SDL_BlitInfo * info) { int width = info->dst_w; int height = info->dst_h; Uint8 *src = info->src; int srcskip = info->src_skip; Uint8 *dst = info->dst; int dstskip = info->dst_skip; SDL_PixelFormat *srcfmt = info->src_fmt; SDL_PixelFormat *dstfmt = info->dst_fmt; const SDL_Color *srcpal = info->src_fmt->palette->colors; Uint32 ckey = info->colorkey; int dstbpp; const int A = info->a; /* Set up some basic variables */ dstbpp = dstfmt->BytesPerPixel; while (height--) { int sR, sG, sB; int dR, dG, dB; /* *INDENT-OFF* */ DUFFS_LOOP( { if ( *src != ckey ) { Uint32 pixel; sR = srcpal[*src].r; sG = srcpal[*src].g; sB = srcpal[*src].b; DISEMBLE_RGB(dst, dstbpp, dstfmt, pixel, dR, dG, dB); ALPHA_BLEND(sR, sG, sB, A, dR, dG, dB); ASSEMBLE_RGB(dst, dstbpp, dstfmt, dR, dG, dB); } src++; dst += dstbpp; }, width); /* *INDENT-ON* */ src += srcskip; dst += dstskip; } } static const SDL_BlitFunc one_blit[] = { NULL, Blit1to1, Blit1to2, Blit1to3, Blit1to4 }; static const SDL_BlitFunc one_blitkey[] = { NULL, Blit1to1Key, Blit1to2Key, Blit1to3Key, Blit1to4Key }; SDL_BlitFunc SDL_CalculateBlit1(SDL_Surface * surface) { int which; SDL_PixelFormat *dstfmt; dstfmt = surface->map->dst->format; if (dstfmt->BitsPerPixel < 8) { which = 0; } else { which = dstfmt->BytesPerPixel; } switch (surface->map->info.flags & ~SDL_COPY_RLE_MASK) { case 0: return one_blit[which]; case SDL_COPY_COLORKEY: return one_blitkey[which]; case SDL_COPY_MODULATE_ALPHA | SDL_COPY_BLEND: /* Supporting 8bpp->8bpp alpha is doable but requires lots of tables which consume space and takes time to precompute, so is better left to the user */ return which >= 2 ? Blit1toNAlpha : NULL; case SDL_COPY_COLORKEY | SDL_COPY_MODULATE_ALPHA | SDL_COPY_BLEND: return which >= 2 ? Blit1toNAlphaKey : NULL; } return NULL; } /* vi: set ts=4 sw=4 expandtab: */