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| author | Andrei Karas <akaras@inbox.ru> | 2013-11-06 00:01:13 +0300 |
|---|---|---|
| committer | Andrei Karas <akaras@inbox.ru> | 2013-11-06 00:01:13 +0300 |
| commit | aee026ac48406044306cf89eb74f072606b17a0d (patch) | |
| tree | a44d58161d9f56169719dedd10e0b81fcdf1d046 /src/resources | |
| parent | 102a7d4fe6e8874ad7dcdfe085a22b51de22999b (diff) | |
| download | mv-aee026ac48406044306cf89eb74f072606b17a0d.tar.gz mv-aee026ac48406044306cf89eb74f072606b17a0d.tar.bz2 mv-aee026ac48406044306cf89eb74f072606b17a0d.tar.xz mv-aee026ac48406044306cf89eb74f072606b17a0d.zip | |
improve images loading speed in software mode with SDL1.2
Diffstat (limited to 'src/resources')
| -rw-r--r-- | src/resources/sdlimagehelper.cpp | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/src/resources/sdlimagehelper.cpp b/src/resources/sdlimagehelper.cpp index fa63517fc..f39ecf4cd 100644 --- a/src/resources/sdlimagehelper.cpp +++ b/src/resources/sdlimagehelper.cpp @@ -213,12 +213,15 @@ Image *SDLImageHelper::_SDLload(SDL_Surface *tmpImage) const const SDL_PixelFormat *const fmt = tmpImage->format; if (fmt->Amask) { + const uint32_t amask = fmt->Amask; + const uint8_t ashift = fmt->Ashift; + const uint8_t aloss = fmt->Aloss; + const uint32_t *pixels = static_cast<uint32_t*>(tmpImage->pixels); for (int i = 0; i < sz; ++ i) { - const unsigned v = ((static_cast<uint32_t*>( - tmpImage->pixels))[i] & fmt->Amask) >> fmt->Ashift; - const uint8_t a = static_cast<const uint8_t>((v << fmt->Aloss) - + (v >> (8 - (fmt->Aloss << 1)))); + const unsigned v = (pixels[i] & amask) >> ashift; + const uint8_t a = static_cast<const uint8_t>((v << aloss) + + (v >> (8 - (aloss << 1)))); if (a != 255) hasAlpha = true; |