diff options
| -rw-r--r-- | engines/sword25/gfx/image/renderedimage.cpp | 24 |
1 files changed, 18 insertions, 6 deletions
diff --git a/engines/sword25/gfx/image/renderedimage.cpp b/engines/sword25/gfx/image/renderedimage.cpp index a9c9de4f0c..f5f33d8e02 100644 --- a/engines/sword25/gfx/image/renderedimage.cpp +++ b/engines/sword25/gfx/image/renderedimage.cpp @@ -373,17 +373,23 @@ bool RenderedImage::blit(int posX, int posY, int flipping, Common::Rect *pPartRe default: // alpha blending #if defined(SCUMM_LITTLE_ENDIAN) - if (cb != 255) + if (cb == 0) + *out = 0; + else if (cb != 255) *out += ((b - *out) * a * cb) >> 16; else *out += ((b - *out) * a) >> 8; out++; - if (cg != 255) + if (cg == 0) + *out = 0; + else if (cg != 255) *out += ((g - *out) * a * cg) >> 16; else *out += ((g - *out) * a) >> 8; out++; - if (cr != 255) + if (cr == 0) + *out = 0; + else if (cr != 255) *out += ((r - *out) * a * cr) >> 16; else *out += ((r - *out) * a) >> 8; @@ -393,17 +399,23 @@ bool RenderedImage::blit(int posX, int posY, int flipping, Common::Rect *pPartRe #else *out = 255; out++; - if (cr != 255) + if (cr == 0) + *out = 0; + else if (cr != 255) *out += ((r - *out) * a * cr) >> 16; else *out += ((r - *out) * a) >> 8; out++; - if (cg != 255) + if (cg == 0) + *out = 0; + else if (cg != 255) *out += ((g - *out) * a * cg) >> 16; else *out += ((g - *out) * a) >> 8; out++; - if (cb != 255) + if (cb == 0) + *out = 0; + else if (cb != 255) *out += ((b - *out) * a * cb) >> 16; else *out += ((b - *out) * a) >> 8; |