mirror of
https://github.com/Relintai/sdl2_frt.git
synced 2024-12-16 11:06:49 +01:00
Add fast paths in BlitNtoNKey
All following conversions are faster (with colorkey, but no blending). (ratio isn't very accurate) ABGR8888 -> BGR888 : faster x9 (2699035 -> 297425) ARGB8888 -> RGB888 : faster x8 (2659266 -> 296137) BGR24 -> BGR24 : faster x5 (2232482 -> 445897) BGR24 -> RGB24 : faster x4 (2150023 -> 448576) BGR888 -> ABGR8888 : faster x8 (2649957 -> 307595) BGRA8888 -> BGRX8888 : faster x9 (2696041 -> 297596) BGRX8888 -> BGRA8888 : faster x8 (2662011 -> 299463) BGRX8888 -> BGRX8888 : faster x9 (2733346 -> 295045) RGB24 -> BGR24 : faster x4 (2154551 -> 485262) RGB24 -> RGB24 : faster x4 (2149878 -> 484870) RGB888 -> ARGB8888 : faster x8 (2762877 -> 324946) RGBA8888 -> RGBX8888 : faster x8 (2657855 -> 297753) RGBX8888 -> RGBA8888 : faster x8 (2661360 -> 296655) RGBX8888 -> RGBX8888 : faster x8 (2649287 -> 308268)
This commit is contained in:
Sylvain Becker
parent
cd25c83aad
commit
7b8bac5958
@ -2329,31 +2329,116 @@ BlitNtoNKey(SDL_BlitInfo * info)
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int dstbpp = dstfmt->BytesPerPixel;
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unsigned alpha = dstfmt->Amask ? info->a : 0;
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Uint32 rgbmask = ~srcfmt->Amask;
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int sfmt = srcfmt->format;
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int dfmt = dstfmt->format;
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/* Set up some basic variables */
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ckey &= rgbmask;
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/* Fastpath: same source/destination format, no Amask, bpp 32, loop is vectorized. ~10x faster */
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if (srcfmt->format == dstfmt->format &&
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(srcfmt->format == SDL_PIXELFORMAT_RGB888 || srcfmt->format == SDL_PIXELFORMAT_BGR888)) {
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/* BPP 4, same rgb */
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if (srcbpp == 4 && dstbpp == 4 && srcfmt->Rmask == dstfmt->Rmask && srcfmt->Gmask == dstfmt->Gmask && srcfmt->Bmask == dstfmt->Bmask) {
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Uint32 *src32 = (Uint32*)src;
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Uint32 *dst32 = (Uint32*)dst;
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srcskip /= sizeof(Uint32);
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dstskip /= sizeof(Uint32);
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if (dstfmt->Amask) {
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/* RGB->RGBA, SET_ALPHA */
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Uint32 mask = info->a << dstfmt->Ashift;
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while (height--) {
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/* *INDENT-OFF* */
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DUFFS_LOOP(
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{
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if (*src32 != ckey) {
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*dst32 = *src32;
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if ((*src32 & rgbmask) != ckey) {
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*dst32 = *src32 | mask;
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}
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++src32;
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++dst32;
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++src32;
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}, width);
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/* *INDENT-ON* */
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src32 = (Uint32 *) ((Uint8 *) src32 + srcskip);
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dst32 = (Uint32 *) ((Uint8 *) dst32 + dstskip);
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}
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return;
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} else {
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/* RGBA->RGB, NO_ALPHA */
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Uint32 mask = srcfmt->Rmask | srcfmt->Gmask | srcfmt->Bmask;
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while (height--) {
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/* *INDENT-OFF* */
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DUFFS_LOOP(
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{
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if ((*src32 & rgbmask) != ckey) {
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*dst32 = *src32 & mask;
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}
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++dst32;
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++src32;
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}, width);
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/* *INDENT-ON* */
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src32 = (Uint32 *) ((Uint8 *) src32 + srcskip);
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dst32 = (Uint32 *) ((Uint8 *) dst32 + dstskip);
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}
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return;
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}
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}
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/* BPP 3, same rgb triplet */
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if ((sfmt == SDL_PIXELFORMAT_RGB24 && dfmt == SDL_PIXELFORMAT_RGB24) ||
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(sfmt == SDL_PIXELFORMAT_BGR24 && dfmt == SDL_PIXELFORMAT_BGR24)) {
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Uint8 k0 = ckey & 0x000000FF;
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Uint8 k1 = (ckey & 0x0000FF00) >> 8;
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Uint8 k2 = (ckey & 0x00FF0000) >> 16;
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while (height--) {
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/* *INDENT-OFF* */
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DUFFS_LOOP(
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{
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Uint8 s0 = src[0];
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Uint8 s1 = src[1];
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Uint8 s2 = src[2];
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if (k0 != s0 || k1 != s1 || k2 != s2) {
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dst[0] = s0;
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dst[1] = s1;
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dst[2] = s2;
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}
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src += 3;
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dst += 3;
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},
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width);
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/* *INDENT-ON* */
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src32 += srcskip;
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dst32 += dstskip;
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src += srcskip;
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dst += dstskip;
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}
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return;
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}
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/* BPP 3, inversed rgb triplet */
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if ((sfmt == SDL_PIXELFORMAT_RGB24 && dfmt == SDL_PIXELFORMAT_BGR24) ||
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(sfmt == SDL_PIXELFORMAT_BGR24 && dfmt == SDL_PIXELFORMAT_RGB24)) {
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Uint8 k0 = ckey & 0xFF;
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Uint8 k1 = (ckey >> 8) & 0xFF;
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Uint8 k2 = (ckey >> 16) & 0xFF;
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while (height--) {
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/* *INDENT-OFF* */
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DUFFS_LOOP(
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{
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Uint8 s0 = src[0];
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Uint8 s1 = src[1];
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Uint8 s2 = src[2];
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if (k0 != s0 || k1 != s1 || k2 != s2) {
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/* Inversed RGB */
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dst[0] = s2;
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dst[1] = s1;
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dst[2] = s0;
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}
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src += 3;
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dst += 3;
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},
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width);
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/* *INDENT-ON* */
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src += srcskip;
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dst += dstskip;
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}
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return;
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}
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@ -2406,15 +2491,15 @@ BlitNtoNKeyCopyAlpha(SDL_BlitInfo * info)
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ckey &= rgbmask;
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/* Fastpath: same source/destination format, with Amask, bpp 32, loop is vectorized. ~10x faster */
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if (srcfmt->format == dstfmt->format &&
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(srcfmt->format == SDL_PIXELFORMAT_ARGB8888 ||
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if (srcfmt->format == dstfmt->format) {
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if (srcfmt->format == SDL_PIXELFORMAT_ARGB8888 ||
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srcfmt->format == SDL_PIXELFORMAT_ABGR8888 ||
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srcfmt->format == SDL_PIXELFORMAT_BGRA8888 ||
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srcfmt->format == SDL_PIXELFORMAT_RGBA8888)) {
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srcfmt->format == SDL_PIXELFORMAT_RGBA8888) {
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Uint32 *src32 = (Uint32*)src;
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Uint32 *dst32 = (Uint32*)dst;
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srcskip /= sizeof(Uint32);
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dstskip /= sizeof(Uint32);
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while (height--) {
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/* *INDENT-OFF* */
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DUFFS_LOOP(
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@ -2427,8 +2512,9 @@ BlitNtoNKeyCopyAlpha(SDL_BlitInfo * info)
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},
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width);
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/* *INDENT-ON* */
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src32 += srcskip;
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dst32 += dstskip;
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src32 = (Uint32 *)((Uint8 *)src32 + srcskip);
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dst32 = (Uint32 *)((Uint8 *)dst32 + dstskip);
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}
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}
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return;
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}
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@ -2532,8 +2618,7 @@ Blit_3or4_to_3or4__same_rgb(SDL_BlitInfo * info)
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if (dstfmt->Amask) {
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/* SET_ALPHA */
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Uint32 alpha = info->a;
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Uint32 alphashift = alpha << 24;
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Uint32 mask = info->a << dstfmt->Ashift;
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while (height--) {
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/* *INDENT-OFF* */
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DUFFS_LOOP(
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@ -2542,7 +2627,7 @@ Blit_3or4_to_3or4__same_rgb(SDL_BlitInfo * info)
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Uint8 s0 = src[0];
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Uint8 s1 = src[1];
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Uint8 s2 = src[2];
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*dst32 = (s0) | (s1 << 8) | (s2 << 16) | alphashift;
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*dst32 = (s0) | (s1 << 8) | (s2 << 16) | mask;
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dst += dstbpp;
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src += srcbpp;
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}, width);
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@ -2588,7 +2673,6 @@ Blit_3or4_to_3or4__inversed_rgb(SDL_BlitInfo * info)
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int dstbpp = dstfmt->BytesPerPixel;
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if (dstfmt->Amask) {
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if (srcfmt->Amask) {
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/* COPY_ALPHA */
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/* Only to switch ABGR8888 <-> ARGB8888 */
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@ -2600,7 +2684,7 @@ Blit_3or4_to_3or4__inversed_rgb(SDL_BlitInfo * info)
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Uint8 s0 = src[0];
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Uint8 s1 = src[1];
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Uint8 s2 = src[2];
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Uint32 alphashift = src[3] << 24;
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Uint32 alphashift = src[3] << dstfmt->Ashift;
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/* inversed, compared to Blit_3or4_to_3or4__same_rgb */
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*dst32 = (s0 << 16) | (s1 << 8) | (s2) | alphashift;
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dst += dstbpp;
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@ -2612,8 +2696,7 @@ Blit_3or4_to_3or4__inversed_rgb(SDL_BlitInfo * info)
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}
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} else {
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/* SET_ALPHA */
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Uint32 alpha = info->a;
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Uint32 alphashift = alpha << 24;
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Uint32 mask = info->a << dstfmt->Ashift;
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while (height--) {
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/* *INDENT-OFF* */
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DUFFS_LOOP(
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@ -2623,7 +2706,7 @@ Blit_3or4_to_3or4__inversed_rgb(SDL_BlitInfo * info)
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Uint8 s1 = src[1];
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Uint8 s2 = src[2];
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/* inversed, compared to Blit_3or4_to_3or4__same_rgb */
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*dst32 = (s0 << 16) | (s1 << 8) | (s2) | alphashift;
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*dst32 = (s0 << 16) | (s1 << 8) | (s2) | mask;
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dst += dstbpp;
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src += srcbpp;
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}, width);
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@ -2745,7 +2828,7 @@ static const struct blit_table normal_blit_4[] = {
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0, Blit_3or4_to_3or4__inversed_rgb, NO_ALPHA | SET_ALPHA | COPY_ALPHA},
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{0x00FF0000, 0x0000FF00, 0x000000FF, 4, 0x000000FF, 0x0000FF00, 0x00FF0000,
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0, Blit_3or4_to_3or4__inversed_rgb, NO_ALPHA | SET_ALPHA | COPY_ALPHA},
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/* RBG 888 and RGB 565 */
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/* RGB 888 and RGB 565 */
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{0x00FF0000, 0x0000FF00, 0x000000FF, 2, 0x0000F800, 0x000007E0, 0x0000001F,
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0, Blit_RGB888_RGB565, NO_ALPHA},
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{0x00FF0000, 0x0000FF00, 0x000000FF, 2, 0x00007C00, 0x000003E0, 0x0000001F,
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