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https://github.com/libsdl-org/SDL.git
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Extend fast paths for colour key blits when the pixel format matches
This commit is contained in:
Cameron Cawley
parent
1675c8267e
commit
d737aa8738
1 changed files with 185 additions and 82 deletions
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@ -2115,7 +2115,125 @@ static void BlitNtoNCopyAlpha(SDL_BlitInfo *info)
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}
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}
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static void Blit2to2Key(SDL_BlitInfo *info)
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static void Blit2to2KeyMaskAlpha(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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Uint16 *srcp = (Uint16 *)info->src;
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int srcskip = info->src_skip;
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Uint16 *dstp = (Uint16 *)info->dst;
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int dstskip = info->dst_skip;
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Uint16 ckey = info->colorkey;
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Uint16 rgbmask = ~info->src_fmt->Amask;
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const SDL_PixelFormatDetails *srcfmt = info->src_fmt;
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const SDL_PixelFormatDetails *dstfmt = info->dst_fmt;
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// Set up some basic variables
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srcskip /= 2;
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dstskip /= 2;
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ckey &= rgbmask;
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if (dstfmt->Amask) {
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// RGB->RGBA, SET_ALPHA
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Uint16 mask = ((Uint32)info->a >> (8 - dstfmt->Abits)) << dstfmt->Ashift;
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while (height--) {
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/* *INDENT-OFF* */ // clang-format off
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DUFFS_LOOP_TRIVIAL(
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{
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if ( (*srcp & rgbmask) != ckey ) {
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*dstp = *srcp | mask;
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}
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dstp++;
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srcp++;
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},
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width);
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/* *INDENT-ON* */ // clang-format on
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srcp += srcskip;
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dstp += dstskip;
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}
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} else {
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// RGBA->RGB, NO_ALPHA
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Uint16 mask = srcfmt->Rmask | srcfmt->Gmask | srcfmt->Bmask;
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while (height--) {
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/* *INDENT-OFF* */ // clang-format off
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DUFFS_LOOP_TRIVIAL(
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{
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if ( (*srcp & rgbmask) != ckey ) {
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*dstp = *srcp & mask;
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}
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dstp++;
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srcp++;
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},
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width);
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/* *INDENT-ON* */ // clang-format on
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srcp += srcskip;
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dstp += dstskip;
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}
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}
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}
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static void Blit4to4KeyMaskAlpha(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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Uint32 *srcp = (Uint32 *)info->src;
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int srcskip = info->src_skip;
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Uint32 *dstp = (Uint32 *)info->dst;
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int dstskip = info->dst_skip;
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Uint32 ckey = info->colorkey;
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Uint32 rgbmask = ~info->src_fmt->Amask;
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const SDL_PixelFormatDetails *srcfmt = info->src_fmt;
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const SDL_PixelFormatDetails *dstfmt = info->dst_fmt;
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// Set up some basic variables
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srcskip /= 4;
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dstskip /= 4;
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ckey &= rgbmask;
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if (dstfmt->Amask) {
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// RGB->RGBA, SET_ALPHA
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Uint32 mask = ((Uint32)info->a >> (8 - dstfmt->Abits)) << dstfmt->Ashift;
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while (height--) {
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/* *INDENT-OFF* */ // clang-format off
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DUFFS_LOOP_TRIVIAL(
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{
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if ( (*srcp & rgbmask) != ckey ) {
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*dstp = *srcp | mask;
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}
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dstp++;
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srcp++;
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},
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width);
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/* *INDENT-ON* */ // clang-format on
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srcp += srcskip;
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dstp += dstskip;
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}
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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* */ // clang-format off
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DUFFS_LOOP_TRIVIAL(
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{
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if ( (*srcp & rgbmask) != ckey ) {
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*dstp = *srcp & mask;
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}
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dstp++;
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srcp++;
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},
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width);
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/* *INDENT-ON* */ // clang-format on
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srcp += srcskip;
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dstp += dstskip;
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}
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}
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}
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static void Blit2to2KeyCopyAlpha(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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@ -2148,6 +2266,39 @@ static void Blit2to2Key(SDL_BlitInfo *info)
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}
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}
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static void Blit4to4KeyCopyAlpha(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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Uint32 *srcp = (Uint32 *)info->src;
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int srcskip = info->src_skip;
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Uint32 *dstp = (Uint32 *)info->dst;
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int dstskip = info->dst_skip;
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Uint32 ckey = info->colorkey;
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Uint32 rgbmask = ~info->src_fmt->Amask;
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// Set up some basic variables
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srcskip /= 4;
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dstskip /= 4;
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ckey &= rgbmask;
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while (height--) {
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/* *INDENT-OFF* */ // clang-format off
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DUFFS_LOOP_TRIVIAL(
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{
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if ( (*srcp & rgbmask) != ckey ) {
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*dstp = *srcp;
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}
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srcp++;
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dstp++;
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},
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width);
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/* *INDENT-ON* */ // clang-format on
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srcp += srcskip;
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dstp += dstskip;
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}
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}
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static void BlitNtoNKey(SDL_BlitInfo *info)
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{
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int width = info->dst_w;
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@ -2169,50 +2320,6 @@ static void BlitNtoNKey(SDL_BlitInfo *info)
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// Set up some basic variables
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ckey &= rgbmask;
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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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if (dstfmt->Amask) {
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// RGB->RGBA, SET_ALPHA
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Uint32 mask = ((Uint32)info->a) << dstfmt->Ashift;
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while (height--) {
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/* *INDENT-OFF* */ // clang-format off
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DUFFS_LOOP_TRIVIAL(
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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* */ // clang-format 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* */ // clang-format off
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DUFFS_LOOP_TRIVIAL(
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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* */ // clang-format 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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#if HAVE_FAST_WRITE_INT8
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// Blit with permutation: 4->4
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if (srcbpp == 4 && dstbpp == 4 &&
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@ -2442,35 +2549,6 @@ static void BlitNtoNKeyCopyAlpha(SDL_BlitInfo *info)
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dstbpp = dstfmt->bytes_per_pixel;
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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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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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Uint32 *src32 = (Uint32 *)src;
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Uint32 *dst32 = (Uint32 *)dst;
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while (height--) {
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/* *INDENT-OFF* */ // clang-format off
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DUFFS_LOOP_TRIVIAL(
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{
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if ((*src32 & rgbmask) != ckey) {
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*dst32 = *src32;
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}
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++src32;
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++dst32;
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},
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width);
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/* *INDENT-ON* */ // clang-format 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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}
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return;
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}
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#if HAVE_FAST_WRITE_INT8
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// Blit with permutation: 4->4
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if (srcbpp == 4 && dstbpp == 4 &&
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@ -3181,19 +3259,44 @@ SDL_BlitFunc SDL_CalculateBlitN(SDL_Surface *surface)
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because RLE is the preferred fast way to deal with this.
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If a particular case turns out to be useful we'll add it. */
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if (srcfmt->bytes_per_pixel == 2 && surface->map.identity != 0) {
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return Blit2to2Key;
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} else {
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#ifdef SDL_ALTIVEC_BLITTERS
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if ((srcfmt->bytes_per_pixel == 4) && (dstfmt->bytes_per_pixel == 4) && SDL_HasAltiVec()) {
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return Blit32to32KeyAltivec;
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} else
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if ((srcfmt->bytes_per_pixel == 4) && (dstfmt->bytes_per_pixel == 4) && SDL_HasAltiVec()) {
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return Blit32to32KeyAltivec;
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} else
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#endif
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if (srcfmt->bytes_per_pixel == dstfmt->bytes_per_pixel &&
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srcfmt->Rmask == dstfmt->Rmask &&
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srcfmt->Gmask == dstfmt->Gmask &&
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srcfmt->Bmask == dstfmt->Bmask) {
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if (srcfmt->Amask && dstfmt->Amask) {
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return BlitNtoNKeyCopyAlpha;
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if (srcfmt->Amask == dstfmt->Amask) {
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if (srcfmt->bytes_per_pixel == 4) {
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// Fastpath C fallback: 32bit RGBA<->RGBA blit with matching RGBA
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return Blit4to4KeyCopyAlpha;
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} else if (srcfmt->bytes_per_pixel == 2) {
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// Fastpath C fallback: 16bit RGBA<->RGBA blit with matching RGBA
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return Blit2to2KeyCopyAlpha;
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} else {
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return BlitNtoNKeyCopyAlpha;
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}
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} else {
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return BlitNtoNKey;
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}
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} else {
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return BlitNtoNKey;
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if (srcfmt->bytes_per_pixel == 4) {
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// Fastpath C fallback: 32bit RGB<->RGBA key blit with matching RGB
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return Blit4to4KeyMaskAlpha;
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} else if (srcfmt->bytes_per_pixel == 2) {
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// Fastpath C fallback: 16bit RGB<->RGBA key blit with matching RGB
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return Blit2to2KeyMaskAlpha;
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} else {
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return BlitNtoNKey;
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}
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}
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} else if (srcfmt->Amask && dstfmt->Amask) {
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return BlitNtoNKeyCopyAlpha;
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} else {
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return BlitNtoNKey;
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}
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}
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