Mercurial > sdl-ios-xcode
diff src/video/SDL_stretch.c @ 1985:8055185ae4ed
Added source color and alpha modulation support.
Added perl script to generate optimized render copy functions.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Mon, 28 Aug 2006 03:17:39 +0000 |
| parents | c121d94672cb |
| children | 7e5ff6cd05bf |
line wrap: on
line diff
--- a/src/video/SDL_stretch.c Thu Aug 24 12:49:59 2006 +0000 +++ b/src/video/SDL_stretch.c Mon Aug 28 03:17:39 2006 +0000 @@ -121,30 +121,33 @@ #else -#define DEFINE_COPY_ROW(name, type) \ -void name(type *src, int src_w, type *dst, int dst_w) \ -{ \ - int i; \ - int pos, inc; \ - type pixel = 0; \ - \ - pos = 0x10000; \ - inc = (src_w << 16) / dst_w; \ - for ( i=dst_w; i>0; --i ) { \ - while ( pos >= 0x10000L ) { \ - pixel = *src++; \ - pos -= 0x10000L; \ - } \ - *dst++ = pixel; \ - pos += inc; \ - } \ +#define DEFINE_COPY_ROW(name, type) \ +void name(type *src, int src_w, type *dst, int dst_w) \ +{ \ + int i; \ + int pos, inc; \ + type pixel = 0; \ + \ + pos = 0x10000; \ + inc = (src_w << 16) / dst_w; \ + for ( i=dst_w; i>0; --i ) { \ + while ( pos >= 0x10000L ) { \ + pixel = *src++; \ + pos -= 0x10000L; \ + } \ + *dst++ = pixel; \ + pos += inc; \ + } \ } +/* *INDENT-OFF* */ DEFINE_COPY_ROW(copy_row1, Uint8) - DEFINE_COPY_ROW(copy_row2, Uint16) DEFINE_COPY_ROW(copy_row4, Uint32) +DEFINE_COPY_ROW(copy_row2, Uint16) +DEFINE_COPY_ROW(copy_row4, Uint32) +/* *INDENT-ON* */ #endif /* USE_ASM_STRETCH */ /* The ASM code doesn't handle 24-bpp stretch blits */ - void - copy_row3(Uint8 * src, int src_w, Uint8 * dst, int dst_w) +void +copy_row3(Uint8 * src, int src_w, Uint8 * dst, int dst_w) { int i; int pos, inc; @@ -278,14 +281,20 @@ #ifdef __GNUC__ __asm__ __volatile__("call *%4": "=&D"(u1), "=&S"(u2): "0"(dstp), "1"(srcp), "r"(copy_row):"memory"); #elif defined(_MSC_VER) || defined(__WATCOMC__) + /* *INDENT-OFF* */ { void *code = copy_row; __asm { - push edi - push esi - mov edi, dstp - mov esi, srcp call dword ptr code pop esi pop edi} + push edi + push esi + mov edi, dstp + mov esi, srcp + call dword ptr code + pop esi + pop edi + } } + /* *INDENT-ON* */ #else #error Need inline assembly for this compiler #endif