diff options
Diffstat (limited to '3rdparty/SDL2/src/video/SDL_blit_1.c')
-rw-r--r-- | 3rdparty/SDL2/src/video/SDL_blit_1.c | 550 |
1 files changed, 0 insertions, 550 deletions
diff --git a/3rdparty/SDL2/src/video/SDL_blit_1.c b/3rdparty/SDL2/src/video/SDL_blit_1.c deleted file mode 100644 index 69c15d08df6..00000000000 --- a/3rdparty/SDL2/src/video/SDL_blit_1.c +++ /dev/null @@ -1,550 +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_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; - Uint32 pixel; - unsigned sR, sG, sB; - unsigned dR, dG, dB, dA; - const unsigned A = info->a; - - /* Set up some basic variables */ - dstbpp = dstfmt->BytesPerPixel; - - while (height--) { - /* *INDENT-OFF* */ - DUFFS_LOOP4( - { - sR = srcpal[*src].r; - sG = srcpal[*src].g; - sB = srcpal[*src].b; - DISEMBLE_RGBA(dst, dstbpp, dstfmt, pixel, dR, dG, dB, dA); - ALPHA_BLEND_RGBA(sR, sG, sB, A, dR, dG, dB, dA); - ASSEMBLE_RGBA(dst, dstbpp, dstfmt, dR, dG, dB, dA); - 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 *dstfmt = info->dst_fmt; - const SDL_Color *srcpal = info->src_fmt->palette->colors; - Uint32 ckey = info->colorkey; - int dstbpp; - Uint32 pixel; - unsigned sR, sG, sB; - unsigned dR, dG, dB, dA; - const unsigned A = info->a; - - /* Set up some basic variables */ - dstbpp = dstfmt->BytesPerPixel; - - while (height--) { - /* *INDENT-OFF* */ - DUFFS_LOOP( - { - if ( *src != ckey ) { - sR = srcpal[*src].r; - sG = srcpal[*src].g; - sB = srcpal[*src].b; - DISEMBLE_RGBA(dst, dstbpp, dstfmt, pixel, dR, dG, dB, dA); - ALPHA_BLEND_RGBA(sR, sG, sB, A, dR, dG, dB, dA); - ASSEMBLE_RGBA(dst, dstbpp, dstfmt, dR, dG, dB, dA); - } - src++; - dst += dstbpp; - }, - width); - /* *INDENT-ON* */ - src += srcskip; - dst += dstskip; - } -} - -static const SDL_BlitFunc one_blit[] = { - (SDL_BlitFunc) NULL, Blit1to1, Blit1to2, Blit1to3, Blit1to4 -}; - -static const SDL_BlitFunc one_blitkey[] = { - (SDL_BlitFunc) 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 : (SDL_BlitFunc) NULL; - - case SDL_COPY_COLORKEY | SDL_COPY_MODULATE_ALPHA | SDL_COPY_BLEND: - return which >= 2 ? Blit1toNAlphaKey : (SDL_BlitFunc) NULL; - } - return (SDL_BlitFunc) NULL; -} - -/* vi: set ts=4 sw=4 expandtab: */ |