mirror of https://github.com/encounter/SDL.git
Fixed bug 4290 - add fastpaths for format conversion in BlitNtoN
All following conversion are faster (no colorkey, no blending). (ratio isn't very accurate) ABGR8888 -> ARGB8888 : faster x6 (2655837 -> 416607) ABGR8888 -> BGR24 : faster x7 (2470117 -> 325693) ABGR8888 -> RGB24 : faster x7 (2478107 -> 335445) ABGR8888 -> RGB888 : faster x9 (3178524 -> 333859) ARGB8888 -> ABGR8888 : faster x6 (2648366 -> 406977) ARGB8888 -> BGR24 : faster x7 (2474978 -> 327819) ARGB8888 -> BGR888 : faster x9 (3189072 -> 326710) ARGB8888 -> RGB24 : faster x7 (2473689 -> 324729) BGR24 -> ABGR8888 : faster x6 (2268763 -> 359946) BGR24 -> ARGB8888 : faster x6 (2306393 -> 359213) BGR24 -> BGR888 : faster x6 (2231141 -> 324195) BGR24 -> RGB24 : faster x4 (1557835 -> 322033) BGR24 -> RGB888 : faster x6 (2229854 -> 323849) BGR888 -> ARGB8888 : faster x8 (3215202 -> 363137) BGR888 -> BGR24 : faster x7 (2474775 -> 347916) BGR888 -> RGB24 : faster x7 (2532783 -> 327354) BGR888 -> RGB888 : faster x9 (3134634 -> 344987) RGB24 -> ABGR8888 : faster x6 (2229486 -> 358919) RGB24 -> ARGB8888 : faster x6 (2271587 -> 358521) RGB24 -> BGR24 : faster x4 (1530913 -> 321149) RGB24 -> BGR888 : faster x6 (2227284 -> 327453) RGB24 -> RGB888 : faster x6 (2227125 -> 329061) RGB888 -> ABGR8888 : faster x8 (3163292 -> 362445) RGB888 -> BGR24 : faster x7 (2469489 -> 327127) RGB888 -> BGR888 : faster x9 (3190526 -> 326022) RGB888 -> RGB24 : faster x7 (2479084 -> 324982)
This commit is contained in:
Sylvain Becker
parent
3b4e369365
commit
1128d57316
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@ -2515,6 +2515,146 @@ BlitNto2101010(SDL_BlitInfo * info)
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}
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}
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/* Blit_3or4_to_3or4__same_rgb: 3 or 4 bpp, same RGB triplet */
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static void
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Blit_3or4_to_3or4__same_rgb(SDL_BlitInfo * info)
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{
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int width = info->dst_w;
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int height = info->dst_h;
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Uint8 *src = info->src;
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int srcskip = info->src_skip;
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Uint8 *dst = info->dst;
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int dstskip = info->dst_skip;
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SDL_PixelFormat *srcfmt = info->src_fmt;
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int srcbpp = srcfmt->BytesPerPixel;
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SDL_PixelFormat *dstfmt = info->dst_fmt;
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int dstbpp = dstfmt->BytesPerPixel;
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if (dstfmt->Amask) {
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/* SET_ALPHA */
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unsigned alpha = info->a;
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int alphashift = alpha << 24;
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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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Uint32 *dst32 = (Uint32*)dst;
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unsigned s0 = src[0];
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unsigned s1 = src[1];
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unsigned s2 = src[2];
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*dst32 = (s0) | (s1 << 8) | (s2 << 16) | alphashift;
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dst += dstbpp;
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src += srcbpp;
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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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} else {
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/* NO_ALPHA */
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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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Uint32 *dst32 = (Uint32*)dst;
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unsigned s0 = src[0];
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unsigned s1 = src[1];
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unsigned s2 = src[2];
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*dst32 = (s0) | (s1 << 8) | (s2 << 16);
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dst += dstbpp;
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src += srcbpp;
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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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}
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return;
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}
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/* Blit_3or4_to_3or4__inversed_rgb: 3 or 4 bpp, inversed RGB triplet */
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static void
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Blit_3or4_to_3or4__inversed_rgb(SDL_BlitInfo * info)
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{
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int width = info->dst_w;
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int height = info->dst_h;
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Uint8 *src = info->src;
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int srcskip = info->src_skip;
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Uint8 *dst = info->dst;
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int dstskip = info->dst_skip;
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SDL_PixelFormat *srcfmt = info->src_fmt;
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int srcbpp = srcfmt->BytesPerPixel;
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SDL_PixelFormat *dstfmt = info->dst_fmt;
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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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while (height--) {
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/* *INDENT-OFF* */
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DUFFS_LOOP(
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{
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Uint32 *dst32 = (Uint32*)dst;
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unsigned s0 = src[0];
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unsigned s1 = src[1];
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unsigned s2 = src[2];
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unsigned alphashift = src[3] << 24;
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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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src += srcbpp;
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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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} else {
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/* SET_ALPHA */
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unsigned alpha = info->a;
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int alphashift = alpha << 24;
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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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Uint32 *dst32 = (Uint32*)dst;
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unsigned s0 = src[0];
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unsigned s1 = src[1];
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unsigned 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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dst += dstbpp;
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src += srcbpp;
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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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}
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} else {
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/* NO_ALPHA */
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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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Uint32 *dst32 = (Uint32*)dst;
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unsigned s0 = src[0];
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unsigned s1 = src[1];
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unsigned 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);
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dst += dstbpp;
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src += srcbpp;
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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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}
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return;
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}
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/* Normal N to N optimized blitters */
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#define NO_ALPHA 1
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#define SET_ALPHA 2
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@ -2555,6 +2695,23 @@ static const struct blit_table normal_blit_2[] = {
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};
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static const struct blit_table normal_blit_3[] = {
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#if SDL_BYTEORDER == SDL_LIL_ENDIAN
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/* 3->4 with same rgb triplet */
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{0x000000FF, 0x0000FF00, 0x00FF0000, 4, 0x000000FF, 0x0000FF00, 0x00FF0000,
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0, Blit_3or4_to_3or4__same_rgb, NO_ALPHA | SET_ALPHA},
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{0x00FF0000, 0x0000FF00, 0x000000FF, 4, 0x00FF0000, 0x0000FF00, 0x000000FF,
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0, Blit_3or4_to_3or4__same_rgb, NO_ALPHA | SET_ALPHA},
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/* 3->4 with inversed rgb triplet */
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{0x000000FF, 0x0000FF00, 0x00FF0000, 4, 0x00FF0000, 0x0000FF00, 0x000000FF,
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0, Blit_3or4_to_3or4__inversed_rgb, NO_ALPHA | SET_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},
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/* 3->3 to switch RGB 24 <-> BGR 24 */
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{0x000000FF, 0x0000FF00, 0x00FF0000, 3, 0x00FF0000, 0x0000FF00, 0x000000FF,
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0, Blit_3or4_to_3or4__inversed_rgb, NO_ALPHA },
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{0x00FF0000, 0x0000FF00, 0x000000FF, 3, 0x000000FF, 0x0000FF00, 0x00FF0000,
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0, Blit_3or4_to_3or4__inversed_rgb, NO_ALPHA },
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#endif
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/* Default for 24-bit RGB source, never optimized */
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{0, 0, 0, 0, 0, 0, 0, 0, BlitNtoN, 0}
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};
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@ -2571,6 +2728,24 @@ static const struct blit_table normal_blit_4[] = {
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{0x00000000, 0x00000000, 0x00000000, 2, 0x0000F800, 0x000007E0, 0x0000001F,
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2, Blit_RGB888_RGB565Altivec, NO_ALPHA},
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#endif
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#if SDL_BYTEORDER == SDL_LIL_ENDIAN
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/* 4->3 with same rgb triplet */
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{0x000000FF, 0x0000FF00, 0x00FF0000, 3, 0x000000FF, 0x0000FF00, 0x00FF0000,
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0, Blit_3or4_to_3or4__same_rgb, NO_ALPHA | SET_ALPHA},
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{0x00FF0000, 0x0000FF00, 0x000000FF, 3, 0x00FF0000, 0x0000FF00, 0x000000FF,
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0, Blit_3or4_to_3or4__same_rgb, NO_ALPHA | SET_ALPHA},
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/* 4->3 with inversed rgb triplet */
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{0x000000FF, 0x0000FF00, 0x00FF0000, 3, 0x00FF0000, 0x0000FF00, 0x000000FF,
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0, Blit_3or4_to_3or4__inversed_rgb, NO_ALPHA | SET_ALPHA},
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{0x00FF0000, 0x0000FF00, 0x000000FF, 3, 0x000000FF, 0x0000FF00, 0x00FF0000,
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0, Blit_3or4_to_3or4__inversed_rgb, NO_ALPHA | SET_ALPHA},
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#endif
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/* 4->4 with inversed rgb triplet, and COPY_ALPHA to switch ABGR8888 <-> ARGB8888 */
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{0x000000FF, 0x0000FF00, 0x00FF0000, 4, 0x00FF0000, 0x0000FF00, 0x000000FF,
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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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{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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@ -2623,7 +2798,7 @@ SDL_CalculateBlitN(SDL_Surface * surface)
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}
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} else {
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/* Now the meat, choose the blitter we want */
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int a_need = NO_ALPHA;
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Uint32 a_need = NO_ALPHA;
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if (dstfmt->Amask)
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a_need = srcfmt->Amask ? COPY_ALPHA : SET_ALPHA;
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table = normal_blit[srcfmt->BytesPerPixel - 1];
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