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Added SSE version of SDL_FillRect() for 32-bit ARGB surfaces

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slouken committed Aug 13, 2007
1 parent 14f61c0 commit b2cd31100810051fab443ba027fdd20a5d7f8da6
Showing with 40 additions and 11 deletions.
  1. +40 −11 src/video/SDL_surface.c
@@ -587,20 +587,22 @@ SDL_FillRect(SDL_Surface * dst, SDL_Rect * dstrect, Uint32 color)
} else {
switch (dst->format->BytesPerPixel) {
case 2:
for (y = dstrect->h; y; --y) {
Uint16 *pixels = (Uint16 *) row;
{
Uint16 c = (Uint16) color;
Uint32 cc = (Uint32) c << 16 | c;
int n = dstrect->w;
if ((uintptr_t) pixels & 3) {
*pixels++ = c;
n--;
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;
}
if (n >> 1)
SDL_memset4(pixels, cc, n >> 1);
if (n & 1)
pixels[n - 1] = c;
row += dst->pitch;
}
break;

@@ -619,6 +621,33 @@ SDL_FillRect(SDL_Surface * dst, SDL_Rect * dstrect, Uint32 color)
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"::);
break;
}
#endif
for (y = dstrect->h; y; --y) {
SDL_memset4(row, color, dstrect->w);
row += dst->pitch;

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