From 30f41c02aec763d32e62351452da9ef582bc3472 Mon Sep 17 00:00:00 2001 From: 3gg <3gg@shellblade.net> Date: Fri, 6 Mar 2026 13:30:59 -0800 Subject: Move contrib libraries to contrib repo --- contrib/SDL-3.2.8/src/video/SDL_blit_0.c | 972 ------------------------------- 1 file changed, 972 deletions(-) delete mode 100644 contrib/SDL-3.2.8/src/video/SDL_blit_0.c (limited to 'contrib/SDL-3.2.8/src/video/SDL_blit_0.c') diff --git a/contrib/SDL-3.2.8/src/video/SDL_blit_0.c b/contrib/SDL-3.2.8/src/video/SDL_blit_0.c deleted file mode 100644 index 0d05bdd..0000000 --- a/contrib/SDL-3.2.8/src/video/SDL_blit_0.c +++ /dev/null @@ -1,972 +0,0 @@ -/* - Simple DirectMedia Layer - Copyright (C) 1997-2025 Sam Lantinga - - 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" - -#ifdef SDL_HAVE_BLIT_0 - -#include "SDL_surface_c.h" - -// Functions to blit from bitmaps to other surfaces - -SDL_FORCE_INLINE void BlitBto1(SDL_BlitInfo *info, const Uint32 srcbpp) -{ - const Uint32 mask = (1 << srcbpp) - 1; - const Uint32 align = (8 / srcbpp) - 1; - - int c; - 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; - - if (srcbpp == 4) - srcskip += width - (width + 1) / 2; - else if (srcbpp == 2) - srcskip += width - (width + 3) / 4; - else if (srcbpp == 1) - srcskip += width - (width + 7) / 8; - - if (map) { - if (SDL_PIXELORDER(info->src_fmt->format) == SDL_BITMAPORDER_4321) { - while (height--) { - Uint8 byte = 0, bit; - for (c = 0; c < width; ++c) { - if (!(c & align)) { - byte = *src++; - } - bit = (byte & mask); - if (1) { - *dst = map[bit]; - } - dst++; - byte >>= srcbpp; - } - src += srcskip; - dst += dstskip; - } - } else { - while (height--) { - Uint8 byte = 0, bit; - for (c = 0; c < width; ++c) { - if (!(c & align)) { - byte = *src++; - } - bit = (byte >> (8 - srcbpp)) & mask; - if (1) { - *dst = map[bit]; - } - dst++; - byte <<= srcbpp; - } - src += srcskip; - dst += dstskip; - } - } - } else { - if (SDL_PIXELORDER(info->src_fmt->format) == SDL_BITMAPORDER_4321) { - while (height--) { - Uint8 byte = 0, bit; - for (c = 0; c < width; ++c) { - if (!(c & align)) { - byte = *src++; - } - bit = (byte & mask); - if (1) { - *dst = bit; - } - dst++; - byte >>= srcbpp; - } - src += srcskip; - dst += dstskip; - } - } else { - while (height--) { - Uint8 byte = 0, bit; - for (c = 0; c < width; ++c) { - if (!(c & align)) { - byte = *src++; - } - bit = (byte >> (8 - srcbpp)) & mask; - if (1) { - *dst = bit; - } - dst++; - byte <<= srcbpp; - } - src += srcskip; - dst += dstskip; - } - } - } -} - -SDL_FORCE_INLINE void BlitBto2(SDL_BlitInfo *info, const Uint32 srcbpp) -{ - const Uint32 mask = (1 << srcbpp) - 1; - const Uint32 align = (8 / srcbpp) - 1; - - int c; - int width, height; - Uint8 *src; - Uint16 *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 = (Uint16 *)info->dst; - dstskip = info->dst_skip / 2; - map = (Uint16 *)info->table; - - if (srcbpp == 4) - srcskip += width - (width + 1) / 2; - else if (srcbpp == 2) - srcskip += width - (width + 3) / 4; - else if (srcbpp == 1) - srcskip += width - (width + 7) / 8; - - if (SDL_PIXELORDER(info->src_fmt->format) == SDL_BITMAPORDER_4321) { - while (height--) { - Uint8 byte = 0, bit; - for (c = 0; c < width; ++c) { - if (!(c & align)) { - byte = *src++; - } - bit = (byte & mask); - if (1) { - *dst = map[bit]; - } - byte >>= srcbpp; - dst++; - } - src += srcskip; - dst += dstskip; - } - } else { - while (height--) { - Uint8 byte = 0, bit; - for (c = 0; c < width; ++c) { - if (!(c & align)) { - byte = *src++; - } - bit = (byte >> (8 - srcbpp)) & mask; - if (1) { - *dst = map[bit]; - } - byte <<= srcbpp; - dst++; - } - src += srcskip; - dst += dstskip; - } - } -} - -SDL_FORCE_INLINE void BlitBto3(SDL_BlitInfo *info, const Uint32 srcbpp) -{ - const Uint32 mask = (1 << srcbpp) - 1; - const Uint32 align = (8 / srcbpp) - 1; - - int c, 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; - - if (srcbpp == 4) - srcskip += width - (width + 1) / 2; - else if (srcbpp == 2) - srcskip += width - (width + 3) / 4; - else if (srcbpp == 1) - srcskip += width - (width + 7) / 8; - - if (SDL_PIXELORDER(info->src_fmt->format) == SDL_BITMAPORDER_4321) { - while (height--) { - Uint8 byte = 0, bit; - for (c = 0; c < width; ++c) { - if (!(c & align)) { - byte = *src++; - } - bit = (byte & mask); - if (1) { - o = bit * 4; - dst[0] = map[o++]; - dst[1] = map[o++]; - dst[2] = map[o++]; - } - byte >>= srcbpp; - dst += 3; - } - src += srcskip; - dst += dstskip; - } - } else { - while (height--) { - Uint8 byte = 0, bit; - for (c = 0; c < width; ++c) { - if (!(c & align)) { - byte = *src++; - } - bit = (byte >> (8 - srcbpp)) & mask; - if (1) { - o = bit * 4; - dst[0] = map[o++]; - dst[1] = map[o++]; - dst[2] = map[o++]; - } - byte <<= srcbpp; - dst += 3; - } - src += srcskip; - dst += dstskip; - } - } -} - -SDL_FORCE_INLINE void BlitBto4(SDL_BlitInfo *info, const Uint32 srcbpp) -{ - const Uint32 mask = (1 << srcbpp) - 1; - const Uint32 align = (8 / srcbpp) - 1; - - int width, height; - Uint8 *src; - Uint32 *map, *dst; - int srcskip, dstskip; - int c; - - // 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; - - if (srcbpp == 4) - srcskip += width - (width + 1) / 2; - else if (srcbpp == 2) - srcskip += width - (width + 3) / 4; - else if (srcbpp == 1) - srcskip += width - (width + 7) / 8; - - if (SDL_PIXELORDER(info->src_fmt->format) == SDL_BITMAPORDER_4321) { - while (height--) { - Uint8 byte = 0, bit; - for (c = 0; c < width; ++c) { - if (!(c & align)) { - byte = *src++; - } - bit = (byte & mask); - if (1) { - *dst = map[bit]; - } - byte >>= srcbpp; - dst++; - } - src += srcskip; - dst += dstskip; - } - } else { - while (height--) { - Uint8 byte = 0, bit; - for (c = 0; c < width; ++c) { - if (!(c & align)) { - byte = *src++; - } - bit = (byte >> (8 - srcbpp)) & mask; - if (1) { - *dst = map[bit]; - } - byte <<= srcbpp; - dst++; - } - src += srcskip; - dst += dstskip; - } - } -} - -SDL_FORCE_INLINE void BlitBto1Key(SDL_BlitInfo *info, const Uint32 srcbpp) -{ - const Uint32 mask = (1 << srcbpp) - 1; - const Uint32 align = (8 / srcbpp) - 1; - - int width = info->dst_w; - int height = info->dst_h; - Uint8 *src = info->src; - Uint8 *dst = info->dst; - int srcskip = info->src_skip; - int dstskip = info->dst_skip; - Uint32 ckey = info->colorkey; - Uint8 *palmap = info->table; - int c; - - // Set up some basic variables - if (srcbpp == 4) - srcskip += width - (width + 1) / 2; - else if (srcbpp == 2) - srcskip += width - (width + 3) / 4; - else if (srcbpp == 1) - srcskip += width - (width + 7) / 8; - - if (palmap) { - if (SDL_PIXELORDER(info->src_fmt->format) == SDL_BITMAPORDER_4321) { - while (height--) { - Uint8 byte = 0, bit; - for (c = 0; c < width; ++c) { - if (!(c & align)) { - byte = *src++; - } - bit = (byte & mask); - if (bit != ckey) { - *dst = palmap[bit]; - } - dst++; - byte >>= srcbpp; - } - src += srcskip; - dst += dstskip; - } - } else { - while (height--) { - Uint8 byte = 0, bit; - for (c = 0; c < width; ++c) { - if (!(c & align)) { - byte = *src++; - } - bit = (byte >> (8 - srcbpp)) & mask; - if (bit != ckey) { - *dst = palmap[bit]; - } - dst++; - byte <<= srcbpp; - } - src += srcskip; - dst += dstskip; - } - } - } else { - if (SDL_PIXELORDER(info->src_fmt->format) == SDL_BITMAPORDER_4321) { - while (height--) { - Uint8 byte = 0, bit; - for (c = 0; c < width; ++c) { - if (!(c & align)) { - byte = *src++; - } - bit = (byte & mask); - if (bit != ckey) { - *dst = bit; - } - dst++; - byte >>= srcbpp; - } - src += srcskip; - dst += dstskip; - } - } else { - while (height--) { - Uint8 byte = 0, bit; - for (c = 0; c < width; ++c) { - if (!(c & align)) { - byte = *src++; - } - bit = (byte >> (8 - srcbpp)) & mask; - if (bit != ckey) { - *dst = bit; - } - dst++; - byte <<= srcbpp; - } - src += srcskip; - dst += dstskip; - } - } - } -} - -SDL_FORCE_INLINE void BlitBto2Key(SDL_BlitInfo *info, const Uint32 srcbpp) -{ - const Uint32 mask = (1 << srcbpp) - 1; - const Uint32 align = (8 / srcbpp) - 1; - - int width = info->dst_w; - int height = info->dst_h; - Uint8 *src = info->src; - Uint16 *dstp = (Uint16 *)info->dst; - int srcskip = info->src_skip; - int dstskip = info->dst_skip; - Uint32 ckey = info->colorkey; - Uint8 *palmap = info->table; - int c; - - // Set up some basic variables - if (srcbpp == 4) - srcskip += width - (width + 1) / 2; - else if (srcbpp == 2) - srcskip += width - (width + 3) / 4; - else if (srcbpp == 1) - srcskip += width - (width + 7) / 8; - dstskip /= 2; - - if (SDL_PIXELORDER(info->src_fmt->format) == SDL_BITMAPORDER_4321) { - while (height--) { - Uint8 byte = 0, bit; - for (c = 0; c < width; ++c) { - if (!(c & align)) { - byte = *src++; - } - bit = (byte & mask); - if (bit != ckey) { - *dstp = ((Uint16 *)palmap)[bit]; - } - byte >>= srcbpp; - dstp++; - } - src += srcskip; - dstp += dstskip; - } - } else { - while (height--) { - Uint8 byte = 0, bit; - for (c = 0; c < width; ++c) { - if (!(c & align)) { - byte = *src++; - } - bit = (byte >> (8 - srcbpp)) & mask; - if (bit != ckey) { - *dstp = ((Uint16 *)palmap)[bit]; - } - byte <<= srcbpp; - dstp++; - } - src += srcskip; - dstp += dstskip; - } - } -} - -SDL_FORCE_INLINE void BlitBto3Key(SDL_BlitInfo *info, const Uint32 srcbpp) -{ - const Uint32 mask = (1 << srcbpp) - 1; - const Uint32 align = (8 / srcbpp) - 1; - - int width = info->dst_w; - int height = info->dst_h; - Uint8 *src = info->src; - Uint8 *dst = info->dst; - int srcskip = info->src_skip; - int dstskip = info->dst_skip; - Uint32 ckey = info->colorkey; - Uint8 *palmap = info->table; - int c; - - // Set up some basic variables - if (srcbpp == 4) - srcskip += width - (width + 1) / 2; - else if (srcbpp == 2) - srcskip += width - (width + 3) / 4; - else if (srcbpp == 1) - srcskip += width - (width + 7) / 8; - - if (SDL_PIXELORDER(info->src_fmt->format) == SDL_BITMAPORDER_4321) { - while (height--) { - Uint8 byte = 0, bit; - for (c = 0; c < width; ++c) { - if (!(c & align)) { - byte = *src++; - } - bit = (byte & mask); - if (bit != ckey) { - SDL_memcpy(dst, &palmap[bit * 4], 3); - } - byte >>= srcbpp; - dst += 3; - } - src += srcskip; - dst += dstskip; - } - } else { - while (height--) { - Uint8 byte = 0, bit; - for (c = 0; c < width; ++c) { - if (!(c & align)) { - byte = *src++; - } - bit = (byte >> (8 - srcbpp)) & mask; - if (bit != ckey) { - SDL_memcpy(dst, &palmap[bit * 4], 3); - } - byte <<= srcbpp; - dst += 3; - } - src += srcskip; - dst += dstskip; - } - } -} - -SDL_FORCE_INLINE void BlitBto4Key(SDL_BlitInfo *info, const Uint32 srcbpp) -{ - const Uint32 mask = (1 << srcbpp) - 1; - const Uint32 align = (8 / srcbpp) - 1; - - int width = info->dst_w; - int height = info->dst_h; - Uint8 *src = info->src; - Uint32 *dstp = (Uint32 *)info->dst; - int srcskip = info->src_skip; - int dstskip = info->dst_skip; - Uint32 ckey = info->colorkey; - Uint8 *palmap = info->table; - int c; - - // Set up some basic variables - if (srcbpp == 4) - srcskip += width - (width + 1) / 2; - else if (srcbpp == 2) - srcskip += width - (width + 3) / 4; - else if (srcbpp == 1) - srcskip += width - (width + 7) / 8; - dstskip /= 4; - - if (SDL_PIXELORDER(info->src_fmt->format) == SDL_BITMAPORDER_4321) { - while (height--) { - Uint8 byte = 0, bit; - for (c = 0; c < width; ++c) { - if (!(c & align)) { - byte = *src++; - } - bit = (byte & mask); - if (bit != ckey) { - *dstp = ((Uint32 *)palmap)[bit]; - } - byte >>= srcbpp; - dstp++; - } - src += srcskip; - dstp += dstskip; - } - } else { - while (height--) { - Uint8 byte = 0, bit; - for (c = 0; c < width; ++c) { - if (!(c & align)) { - byte = *src++; - } - bit = (byte >> (8 - srcbpp)) & mask; - if (bit != ckey) { - *dstp = ((Uint32 *)palmap)[bit]; - } - byte <<= srcbpp; - dstp++; - } - src += srcskip; - dstp += dstskip; - } - } -} - -static void BlitBtoNAlpha(SDL_BlitInfo *info) -{ - int width = info->dst_w; - int height = info->dst_h; - Uint8 *src = info->src; - Uint8 *dst = info->dst; - int srcskip = info->src_skip; - int dstskip = info->dst_skip; - const SDL_Color *srcpal = info->src_pal->colors; - const SDL_PixelFormatDetails *srcfmt = info->src_fmt; - const SDL_PixelFormatDetails *dstfmt = info->dst_fmt; - int srcbpp, dstbpp; - int c; - Uint32 pixel, mask, align; - unsigned sR, sG, sB; - unsigned dR, dG, dB, dA; - const unsigned A = info->a; - - // Set up some basic variables - srcbpp = srcfmt->bytes_per_pixel; - dstbpp = dstfmt->bytes_per_pixel; - if (srcbpp == 4) - srcskip += width - (width + 1) / 2; - else if (srcbpp == 2) - srcskip += width - (width + 3) / 4; - else if (srcbpp == 1) - srcskip += width - (width + 7) / 8; - mask = (1 << srcbpp) - 1; - align = (8 / srcbpp) - 1; - - if (SDL_PIXELORDER(info->src_fmt->format) == SDL_BITMAPORDER_4321) { - while (height--) { - Uint8 byte = 0, bit; - for (c = 0; c < width; ++c) { - if (!(c & align)) { - byte = *src++; - } - bit = (byte & mask); - if (1) { - sR = srcpal[bit].r; - sG = srcpal[bit].g; - sB = srcpal[bit].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); - } - byte >>= srcbpp; - dst += dstbpp; - } - src += srcskip; - dst += dstskip; - } - } else { - while (height--) { - Uint8 byte = 0, bit; - for (c = 0; c < width; ++c) { - if (!(c & align)) { - byte = *src++; - } - bit = (byte >> (8 - srcbpp)) & mask; - if (1) { - sR = srcpal[bit].r; - sG = srcpal[bit].g; - sB = srcpal[bit].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); - } - byte <<= srcbpp; - dst += dstbpp; - } - src += srcskip; - dst += dstskip; - } - } -} - -static void BlitBtoNAlphaKey(SDL_BlitInfo *info) -{ - int width = info->dst_w; - int height = info->dst_h; - Uint8 *src = info->src; - Uint8 *dst = info->dst; - int srcskip = info->src_skip; - int dstskip = info->dst_skip; - const SDL_PixelFormatDetails *srcfmt = info->src_fmt; - const SDL_PixelFormatDetails *dstfmt = info->dst_fmt; - const SDL_Color *srcpal = info->src_pal->colors; - int srcbpp, dstbpp; - int c; - Uint32 pixel, mask, align; - unsigned sR, sG, sB; - unsigned dR, dG, dB, dA; - const unsigned A = info->a; - Uint32 ckey = info->colorkey; - - // Set up some basic variables - srcbpp = srcfmt->bytes_per_pixel; - dstbpp = dstfmt->bytes_per_pixel; - if (srcbpp == 4) - srcskip += width - (width + 1) / 2; - else if (srcbpp == 2) - srcskip += width - (width + 3) / 4; - else if (srcbpp == 1) - srcskip += width - (width + 7) / 8; - mask = (1 << srcbpp) - 1; - align = (8 / srcbpp) - 1; - - if (SDL_PIXELORDER(info->src_fmt->format) == SDL_BITMAPORDER_4321) { - while (height--) { - Uint8 byte = 0, bit; - for (c = 0; c < width; ++c) { - if (!(c & align)) { - byte = *src++; - } - bit = (byte & mask); - if (bit != ckey) { - sR = srcpal[bit].r; - sG = srcpal[bit].g; - sB = srcpal[bit].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); - } - byte >>= srcbpp; - dst += dstbpp; - } - src += srcskip; - dst += dstskip; - } - } else { - while (height--) { - Uint8 byte = 0, bit; - for (c = 0; c < width; ++c) { - if (!(c & align)) { - byte = *src++; - } - bit = (byte >> (8 - srcbpp)) & mask; - if (bit != ckey) { - sR = srcpal[bit].r; - sG = srcpal[bit].g; - sB = srcpal[bit].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); - } - byte <<= srcbpp; - dst += dstbpp; - } - src += srcskip; - dst += dstskip; - } - } -} - - - -static void Blit1bto1(SDL_BlitInfo *info) { - BlitBto1(info, 1); -} - -static void Blit1bto2(SDL_BlitInfo *info) { - BlitBto2(info, 1); -} - -static void Blit1bto3(SDL_BlitInfo *info) { - BlitBto3(info, 1); -} - -static void Blit1bto4(SDL_BlitInfo *info) { - BlitBto4(info, 1); -} - -static const SDL_BlitFunc bitmap_blit_1b[] = { - (SDL_BlitFunc)NULL, Blit1bto1, Blit1bto2, Blit1bto3, Blit1bto4 -}; - -static void Blit1bto1Key(SDL_BlitInfo *info) { - BlitBto1Key(info, 1); -} - -static void Blit1bto2Key(SDL_BlitInfo *info) { - BlitBto2Key(info, 1); -} - -static void Blit1bto3Key(SDL_BlitInfo *info) { - BlitBto3Key(info, 1); -} - -static void Blit1bto4Key(SDL_BlitInfo *info) { - BlitBto4Key(info, 1); -} - -static const SDL_BlitFunc colorkey_blit_1b[] = { - (SDL_BlitFunc)NULL, Blit1bto1Key, Blit1bto2Key, Blit1bto3Key, Blit1bto4Key -}; - - - -static void Blit2bto1(SDL_BlitInfo *info) { - BlitBto1(info, 2); -} - -static void Blit2bto2(SDL_BlitInfo *info) { - BlitBto2(info, 2); -} - -static void Blit2bto3(SDL_BlitInfo *info) { - BlitBto3(info, 2); -} - -static void Blit2bto4(SDL_BlitInfo *info) { - BlitBto4(info, 2); -} - -static const SDL_BlitFunc bitmap_blit_2b[] = { - (SDL_BlitFunc)NULL, Blit2bto1, Blit2bto2, Blit2bto3, Blit2bto4 -}; - -static void Blit2bto1Key(SDL_BlitInfo *info) { - BlitBto1Key(info, 2); -} - -static void Blit2bto2Key(SDL_BlitInfo *info) { - BlitBto2Key(info, 2); -} - -static void Blit2bto3Key(SDL_BlitInfo *info) { - BlitBto3Key(info, 2); -} - -static void Blit2bto4Key(SDL_BlitInfo *info) { - BlitBto4Key(info, 2); -} - -static const SDL_BlitFunc colorkey_blit_2b[] = { - (SDL_BlitFunc)NULL, Blit2bto1Key, Blit2bto2Key, Blit2bto3Key, Blit2bto4Key -}; - - - -static void Blit4bto1(SDL_BlitInfo *info) { - BlitBto1(info, 4); -} - -static void Blit4bto2(SDL_BlitInfo *info) { - BlitBto2(info, 4); -} - -static void Blit4bto3(SDL_BlitInfo *info) { - BlitBto3(info, 4); -} - -static void Blit4bto4(SDL_BlitInfo *info) { - BlitBto4(info, 4); -} - -static const SDL_BlitFunc bitmap_blit_4b[] = { - (SDL_BlitFunc)NULL, Blit4bto1, Blit4bto2, Blit4bto3, Blit4bto4 -}; - -static void Blit4bto1Key(SDL_BlitInfo *info) { - BlitBto1Key(info, 4); -} - -static void Blit4bto2Key(SDL_BlitInfo *info) { - BlitBto2Key(info, 4); -} - -static void Blit4bto3Key(SDL_BlitInfo *info) { - BlitBto3Key(info, 4); -} - -static void Blit4bto4Key(SDL_BlitInfo *info) { - BlitBto4Key(info, 4); -} - -static const SDL_BlitFunc colorkey_blit_4b[] = { - (SDL_BlitFunc)NULL, Blit4bto1Key, Blit4bto2Key, Blit4bto3Key, Blit4bto4Key -}; - - - -SDL_BlitFunc SDL_CalculateBlit0(SDL_Surface *surface) -{ - int which; - - if (SDL_BITSPERPIXEL(surface->map.info.dst_fmt->format) < 8) { - which = 0; - } else { - which = SDL_BYTESPERPIXEL(surface->map.info.dst_fmt->format); - } - - if (SDL_PIXELTYPE(surface->format) == SDL_PIXELTYPE_INDEX1) { - switch (surface->map.info.flags & ~SDL_COPY_RLE_MASK) { - case 0: - if (which < SDL_arraysize(bitmap_blit_1b)) { - return bitmap_blit_1b[which]; - } - break; - - case SDL_COPY_COLORKEY: - if (which < SDL_arraysize(colorkey_blit_1b)) { - return colorkey_blit_1b[which]; - } - break; - - case SDL_COPY_MODULATE_ALPHA | SDL_COPY_BLEND: - return which >= 2 ? BlitBtoNAlpha : (SDL_BlitFunc)NULL; - - case SDL_COPY_COLORKEY | SDL_COPY_MODULATE_ALPHA | SDL_COPY_BLEND: - return which >= 2 ? BlitBtoNAlphaKey : (SDL_BlitFunc)NULL; - } - return NULL; - } - - if (SDL_PIXELTYPE(surface->format) == SDL_PIXELTYPE_INDEX2) { - switch (surface->map.info.flags & ~SDL_COPY_RLE_MASK) { - case 0: - if (which < SDL_arraysize(bitmap_blit_2b)) { - return bitmap_blit_2b[which]; - } - break; - - case SDL_COPY_COLORKEY: - if (which < SDL_arraysize(colorkey_blit_2b)) { - return colorkey_blit_2b[which]; - } - break; - - case SDL_COPY_MODULATE_ALPHA | SDL_COPY_BLEND: - return which >= 2 ? BlitBtoNAlpha : (SDL_BlitFunc)NULL; - - case SDL_COPY_COLORKEY | SDL_COPY_MODULATE_ALPHA | SDL_COPY_BLEND: - return which >= 2 ? BlitBtoNAlphaKey : (SDL_BlitFunc)NULL; - } - return NULL; - } - - if (SDL_PIXELTYPE(surface->format) == SDL_PIXELTYPE_INDEX4) { - switch (surface->map.info.flags & ~SDL_COPY_RLE_MASK) { - case 0: - if (which < SDL_arraysize(bitmap_blit_4b)) { - return bitmap_blit_4b[which]; - } - break; - - case SDL_COPY_COLORKEY: - if (which < SDL_arraysize(colorkey_blit_4b)) { - return colorkey_blit_4b[which]; - } - break; - - case SDL_COPY_MODULATE_ALPHA | SDL_COPY_BLEND: - return which >= 2 ? BlitBtoNAlpha : (SDL_BlitFunc)NULL; - - case SDL_COPY_COLORKEY | SDL_COPY_MODULATE_ALPHA | SDL_COPY_BLEND: - return which >= 2 ? BlitBtoNAlphaKey : (SDL_BlitFunc)NULL; - } - return NULL; - } - - return NULL; -} - -#endif // SDL_HAVE_BLIT_0 -- cgit v1.2.3