diff options
Diffstat (limited to 'graphics/managed_surface.cpp')
| -rw-r--r-- | graphics/managed_surface.cpp | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/graphics/managed_surface.cpp b/graphics/managed_surface.cpp index 6e7275cac6..583859ae04 100644 --- a/graphics/managed_surface.cpp +++ b/graphics/managed_surface.cpp @@ -236,25 +236,25 @@ void ManagedSurface::blitFrom(const Surface &src, const Common::Rect &srcRect, addDirtyRect(Common::Rect(0, 0, this->w, this->h)); } -void ManagedSurface::transBlitFrom(const Surface &src, uint transColor, bool flipped, uint overrideColor) { +void ManagedSurface::transBlitFrom(const Surface &src, uint transColor, bool flipped, uint overrideColor, uint srcAlpha) { transBlitFrom(src, Common::Rect(0, 0, src.w, src.h), Common::Rect(0, 0, this->w, this->h), transColor, flipped, overrideColor); } void ManagedSurface::transBlitFrom(const Surface &src, const Common::Point &destPos, - uint transColor, bool flipped, uint overrideColor) { + uint transColor, bool flipped, uint overrideColor, uint srcAlpha) { transBlitFrom(src, Common::Rect(0, 0, src.w, src.h), Common::Rect(destPos.x, destPos.y, destPos.x + src.w, destPos.y + src.h), transColor, flipped, overrideColor); } void ManagedSurface::transBlitFrom(const Surface &src, const Common::Rect &srcRect, - const Common::Point &destPos, uint transColor, bool flipped, uint overrideColor) { + const Common::Point &destPos, uint transColor, bool flipped, uint overrideColor, uint srcAlpha) { transBlitFrom(src, srcRect, Common::Rect(destPos.x, destPos.y, destPos.x + srcRect.width(), destPos.y + srcRect.height()), transColor, flipped, overrideColor); } template<typename TSRC, typename TDEST> -void transBlit(const Surface &src, const Common::Rect &srcRect, Surface &dest, const Common::Rect &destRect, TSRC transColor, bool flipped, uint overrideColor) { +void transBlit(const Surface &src, const Common::Rect &srcRect, Surface &dest, const Common::Rect &destRect, TSRC transColor, bool flipped, uint overrideColor, uint srcAlpha) { int scaleX = SCALE_THRESHOLD * srcRect.width() / destRect.width(); int scaleY = SCALE_THRESHOLD * srcRect.height() / destRect.height(); const Graphics::PixelFormat &srcFormat = src.format; @@ -279,7 +279,7 @@ void transBlit(const Surface &src, const Common::Rect &srcRect, Surface &dest, c if (srcVal == transColor) continue; - if (srcFormat == destFormat) { + if (srcFormat == destFormat && srcAlpha == 0xff) { // Matching formats, so we can do a straight copy destLine[xCtr] = overrideColor ? overrideColor : srcVal; } else { @@ -287,6 +287,10 @@ void transBlit(const Surface &src, const Common::Rect &srcRect, Surface &dest, c srcFormat.colorToARGB(srcVal, aSrc, rSrc, gSrc, bSrc); destFormat.colorToRGB(destLine[xCtr], rDest, gDest, bDest); + if (srcAlpha != 0xff) { + aSrc = aSrc * srcAlpha / 255; + } + if (aSrc == 0) { // Completely transparent, so skip continue; @@ -311,11 +315,11 @@ void transBlit(const Surface &src, const Common::Rect &srcRect, Surface &dest, c #define HANDLE_BLIT(SRC_BYTES, DEST_BYTES, SRC_TYPE, DEST_TYPE) \ if (src.format.bytesPerPixel == SRC_BYTES && format.bytesPerPixel == DEST_BYTES) \ - transBlit<SRC_TYPE, DEST_TYPE>(src, srcRect, _innerSurface, destRect, transColor, flipped, overrideColor); \ + transBlit<SRC_TYPE, DEST_TYPE>(src, srcRect, _innerSurface, destRect, transColor, flipped, overrideColor, srcAlpha); \ else void ManagedSurface::transBlitFrom(const Surface &src, const Common::Rect &srcRect, - const Common::Rect &destRect, uint transColor, bool flipped, uint overrideColor) { + const Common::Rect &destRect, uint transColor, bool flipped, uint overrideColor, uint srcAlpha) { if (src.w == 0 || src.h == 0 || destRect.width() == 0 || destRect.height() == 0) return; |