Mercurial > sdl-ios-xcode
diff src/video/SDL_surface.c @ 2249:5a58b57b6724
Added SSE and MMX optimization for SDL_FillRect()
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Thu, 16 Aug 2007 05:56:24 +0000 |
parents | 31835fd24b2b |
children | 292bee385630 |
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--- a/src/video/SDL_surface.c Thu Aug 16 02:14:13 2007 +0000 +++ b/src/video/SDL_surface.c Thu Aug 16 05:56:24 2007 +0000 @@ -509,20 +509,220 @@ return 0; } -static int -SDL_FillRect1(SDL_Surface * dst, SDL_Rect * dstrect, Uint32 color) -{ - /* FIXME: We have to worry about packing order.. *sigh* */ - SDL_SetError("1-bpp rect fill not yet implemented"); - return -1; +#ifdef __SSE__ +/* *INDENT-OFF* */ + +#define SSE_BEGIN \ + DECLARE_ALIGNED(Uint32, cccc[4], 16); \ + cccc[0] = color; \ + cccc[1] = color; \ + cccc[2] = color; \ + cccc[3] = color; \ + __m128 c128 = *(__m128 *)cccc; + +#define SSE_WORK \ + for (i = n / 64; i--;) { \ + _mm_stream_ps((float *)(p+0), c128); \ + _mm_stream_ps((float *)(p+16), c128); \ + _mm_stream_ps((float *)(p+32), c128); \ + _mm_stream_ps((float *)(p+48), c128); \ + p += 64; \ + } + +#define SSE_END + +#define DEFINE_SSE_FILLRECT(bpp, type) \ +static void \ +SDL_FillRect##bpp##SSE(Uint8 *pixels, int pitch, Uint32 color, int w, int h) \ +{ \ + SSE_BEGIN; \ + \ + while (h--) { \ + int i, n = w * bpp; \ + Uint8 *p = pixels; \ + \ + if (n > 15) { \ + int adjust = 16 - ((uintptr_t)p & 15); \ + if (adjust < 16) { \ + n -= adjust; \ + adjust /= bpp; \ + while(adjust--) { \ + *((type *)p) = (type)color; \ + p += bpp; \ + } \ + } \ + SSE_WORK; \ + } \ + if (n & 63) { \ + int remainder = (n & 63); \ + remainder /= bpp; \ + while(remainder--) { \ + *((type *)p) = (type)color; \ + p += bpp; \ + } \ + } \ + pixels += pitch; \ + } \ + \ + SSE_END; \ } -static int -SDL_FillRect4(SDL_Surface * dst, SDL_Rect * dstrect, Uint32 color) +DEFINE_SSE_FILLRECT(1, Uint8) +DEFINE_SSE_FILLRECT(2, Uint16) +DEFINE_SSE_FILLRECT(4, Uint32) + +/* *INDENT-ON* */ +#endif /* __SSE__ */ + +#ifdef __MMX__ +/* *INDENT-OFF* */ + +#define MMX_BEGIN \ + __m64 c64 = _mm_set_pi32(color, color) + +#define MMX_WORK \ + for (i = n / 64; i--;) { \ + _mm_stream_pi((__m64 *)(p+0), c64); \ + _mm_stream_pi((__m64 *)(p+8), c64); \ + _mm_stream_pi((__m64 *)(p+16), c64); \ + _mm_stream_pi((__m64 *)(p+24), c64); \ + _mm_stream_pi((__m64 *)(p+32), c64); \ + _mm_stream_pi((__m64 *)(p+40), c64); \ + _mm_stream_pi((__m64 *)(p+48), c64); \ + _mm_stream_pi((__m64 *)(p+56), c64); \ + p += 64; \ + } + +#define MMX_END \ + _mm_empty() + +#define DEFINE_MMX_FILLRECT(bpp, type) \ +static void \ +SDL_FillRect##bpp##MMX(Uint8 *pixels, int pitch, Uint32 color, int w, int h) \ +{ \ + MMX_BEGIN; \ + \ + while (h--) { \ + int i, n = w * bpp; \ + Uint8 *p = pixels; \ + \ + if (n > 7) { \ + int adjust = 8 - ((uintptr_t)p & 7); \ + if (adjust < 8) { \ + n -= adjust; \ + adjust /= bpp; \ + while(adjust--) { \ + *((type *)p) = (type)color; \ + p += bpp; \ + } \ + } \ + MMX_WORK; \ + } \ + if (n & 63) { \ + int remainder = (n & 63); \ + remainder /= bpp; \ + while(remainder--) { \ + *((type *)p) = (type)color; \ + p += bpp; \ + } \ + } \ + pixels += pitch; \ + } \ + \ + MMX_END; \ +} + +DEFINE_MMX_FILLRECT(1, Uint8) +DEFINE_MMX_FILLRECT(2, Uint16) +DEFINE_MMX_FILLRECT(4, Uint32) + +/* *INDENT-ON* */ +#endif /* __MMX__ */ + +static void +SDL_FillRect1(Uint8 * pixels, int pitch, Uint32 color, int w, int h) { - /* FIXME: We have to worry about packing order.. *sigh* */ - SDL_SetError("4-bpp rect fill not yet implemented"); - return -1; + while (h--) { + int n = w; + Uint8 *p = pixels; + + if (n > 3) { + switch ((uintptr_t) p & 3) { + case 1: + *p++ = (Uint8) color; + --n; + case 2: + *p++ = (Uint8) color; + --n; + case 3: + *p++ = (Uint8) color; + --n; + } + SDL_memset4(p, color, (n >> 2)); + } + if (n & 3) { + p += (n & ~3); + switch (n & 3) { + case 3: + *p++ = (Uint8) color; + case 2: + *p++ = (Uint8) color; + case 1: + *p++ = (Uint8) color; + } + } + pixels += pitch; + } +} + +static void +SDL_FillRect2(Uint8 * pixels, int pitch, Uint32 color, int w, int h) +{ + while (h--) { + int n = w; + Uint16 *p = (Uint16 *) pixels; + + if (n > 1) { + if ((uintptr_t) p & 2) { + *p++ = (Uint16) color; + --n; + } + SDL_memset4(p, color, (n >> 1)); + } + if (n & 1) { + p[n - 1] = (Uint16) color; + } + pixels += pitch; + } +} + +static void +SDL_FillRect3(Uint8 * pixels, int pitch, Uint32 color, int w, int h) +{ + Uint8 r = (Uint8) (color & 0xFF); + Uint8 g = (Uint8) ((color >> 8) & 0xFF); + Uint8 b = (Uint8) ((color >> 16) & 0xFF); + + while (h--) { + int n = w; + Uint8 *p = pixels; + + while (n--) { + *p++ = r; + *p++ = g; + *p++ = b; + } + pixels += pitch; + } +} + +static void +SDL_FillRect4(Uint8 * pixels, int pitch, Uint32 color, int w, int h) +{ + while (h--) { + SDL_memset4(pixels, color, w); + pixels += pitch; + } } /* @@ -531,23 +731,12 @@ int SDL_FillRect(SDL_Surface * dst, SDL_Rect * dstrect, Uint32 color) { - int x, y; - Uint8 *row; + Uint8 *pixels; /* This function doesn't work on surfaces < 8 bpp */ if (dst->format->BitsPerPixel < 8) { - switch (dst->format->BitsPerPixel) { - case 1: - return SDL_FillRect1(dst, dstrect, color); - break; - case 4: - return SDL_FillRect4(dst, dstrect, color); - break; - default: - SDL_SetError("Fill rect on unsupported surface format"); - return (-1); - break; - } + SDL_SetError("Fill rect on unsupported surface format"); + return (-1); } /* If 'dstrect' == NULL, then fill the whole surface */ @@ -564,97 +753,83 @@ if (SDL_LockSurface(dst) != 0) { return (-1); } - row = (Uint8 *) dst->pixels + dstrect->y * dst->pitch + + + pixels = + (Uint8 *) dst->pixels + dstrect->y * dst->pitch + dstrect->x * dst->format->BytesPerPixel; - if (dst->format->palette || (color == 0)) { - x = dstrect->w * dst->format->BytesPerPixel; -#ifndef __MACOSX__ /* memset() is optimized on Mac OS X */ - if (!color && !((uintptr_t) row & 3) && !(x & 3) - && !(dst->pitch & 3)) { - int n = x >> 2; - for (y = dstrect->h; y; --y) { - SDL_memset4(row, 0, n); - row += dst->pitch; - } - } else -#endif /* !__MACOSX__ */ + + switch (dst->format->BytesPerPixel) { + case 1: { - for (y = dstrect->h; y; y--) { - SDL_memset(row, color, x); - row += dst->pitch; + color |= (color << 8); + color |= (color << 16); +#ifdef __SSE__ + if (SDL_HasSSE()) { + SDL_FillRect1SSE(pixels, dst->pitch, color, dstrect->w, + dstrect->h); + break; } - } - } else { - switch (dst->format->BytesPerPixel) { - case 2: - { - Uint16 c = (Uint16) color; - Uint32 cc = (Uint32) c << 16 | c; - for (y = dstrect->h; y; --y) { - Uint16 *pixels = (Uint16 *) row; - int n = dstrect->w; - if ((uintptr_t) pixels & 3) { - *pixels++ = c; - n--; - } - if (n >> 1) - SDL_memset4(pixels, cc, n >> 1); - if (n & 1) - pixels[n - 1] = c; - row += dst->pitch; - } +#endif +#ifdef __MMX__ + if (SDL_HasMMX()) { + SDL_FillRect1MMX(pixels, dst->pitch, color, dstrect->w, + dstrect->h); + break; } +#endif + SDL_FillRect1(pixels, dst->pitch, color, dstrect->w, dstrect->h); break; - - case 3: -#if SDL_BYTEORDER == SDL_BIG_ENDIAN - color <<= 8; -#endif - for (y = dstrect->h; y; --y) { - Uint8 *pixels = row; - for (x = dstrect->w; x; --x) { - SDL_memcpy(pixels, &color, 3); - pixels += 3; - } - row += dst->pitch; - } - break; + } - case 4: -#if defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__)) && SDL_ASSEMBLY_ROUTINES - if (SDL_HasSSE() && !((uintptr_t) row & 15) && !(dstrect->w & 3)) { - Uint32 cccc[4] __attribute__ ((aligned(16))) = { - color, color, color, color}; - int i, n = dstrect->w / 4; - __asm__ __volatile__(" movdqa (%0), %%xmm0\n":: - "r"(cccc):"memory"); - for (y = dstrect->h; y; --y) { - Uint8 *pixels = row; - for (i = n / 2; i--;) { - /* *INDENT-OFF* */ - __asm__ __volatile__(" prefetchnta 256(%0)\n" - " movdqa %%xmm0, (%0)\n" - " movdqa %%xmm0, 16(%0)\n"::"r"(pixels):"memory"); - /* *INDENT-ON* */ - pixels += 32; - } - if (n & 1) { - __asm__ __volatile__(" movdqa %%xmm0, (%0)\n":: - "r"(pixels):"memory"); - } - row += dst->pitch; - } - __asm__ __volatile__(" emms\n"::); + case 2: + { + color |= (color << 16); +#ifdef __SSE__ + if (SDL_HasSSE()) { + SDL_FillRect2SSE(pixels, dst->pitch, color, dstrect->w, + dstrect->h); break; } #endif - for (y = dstrect->h; y; --y) { - SDL_memset4(row, color, dstrect->w); - row += dst->pitch; +#ifdef __MMX__ + if (SDL_HasMMX()) { + SDL_FillRect2MMX(pixels, dst->pitch, color, dstrect->w, + dstrect->h); + break; } +#endif + SDL_FillRect2(pixels, dst->pitch, color, dstrect->w, dstrect->h); + break; + } + + case 3: + /* 24-bit RGB is a slow path, at least for now. */ + { + SDL_FillRect3(pixels, dst->pitch, color, dstrect->w, dstrect->h); + break; + } + + case 4: + { +#ifdef __SSE__ + if (SDL_HasSSE()) { + SDL_FillRect4SSE(pixels, dst->pitch, color, dstrect->w, + dstrect->h); + break; + } +#endif +#ifdef __MMX__ + if (SDL_HasMMX()) { + SDL_FillRect4MMX(pixels, dst->pitch, color, dstrect->w, + dstrect->h); + break; + } +#endif + SDL_FillRect4(pixels, dst->pitch, color, dstrect->w, dstrect->h); break; } } + SDL_UnlockSurface(dst); /* We're done! */