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| author | Jared Adams <jaxad0127@gmail.com> | 2010-05-20 01:35:17 -0600 |
|---|---|---|
| committer | Jared Adams <jaxad0127@gmail.com> | 2010-05-20 12:25:37 -0600 |
| commit | 487a86fe7dc9904f445d91667095f641f72f7c81 (patch) | |
| tree | 57191d175f7b2fe771f6b2da225bc2d9cb5ff1d9 /src/graphics.cpp | |
| parent | 36832f3a5378f739da7040f0711b7101dbc2af02 (diff) | |
| download | Mana-487a86fe7dc9904f445d91667095f641f72f7c81.tar.gz Mana-487a86fe7dc9904f445d91667095f641f72f7c81.tar.bz2 Mana-487a86fe7dc9904f445d91667095f641f72f7c81.tar.xz Mana-487a86fe7dc9904f445d91667095f641f72f7c81.zip | |
Buffer layered sprites under SDL
This improves framerate and allows transparent overlay for complex
sprites. Two copies of the buffer are kept, one at full opacity,
one with variable opactiy, to reduce calls to setAlpha.
Reviewed-by: Bertram
Diffstat (limited to 'src/graphics.cpp')
| -rw-r--r-- | src/graphics.cpp | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/src/graphics.cpp b/src/graphics.cpp index 9815e1ad..24f92544 100644 --- a/src/graphics.cpp +++ b/src/graphics.cpp @@ -27,12 +27,15 @@ #include "resources/image.h" #include "resources/imageloader.h" +#include <SDL_gfxBlitFunc.h> + Graphics::Graphics(): mWidth(0), mHeight(0), mBpp(0), mFullscreen(false), - mHWAccel(false) + mHWAccel(false), + mBlitMode(BLIT_NORMAL) { } @@ -183,7 +186,10 @@ bool Graphics::drawImage(Image *image, int srcX, int srcY, int dstX, int dstY, srcRect.w = width; srcRect.h = height; - return !(SDL_BlitSurface(image->mSDLSurface, &srcRect, mTarget, &dstRect) < 0); + if (mBlitMode == BLIT_NORMAL) + return !(SDL_BlitSurface(image->mSDLSurface, &srcRect, mTarget, &dstRect) < 0); + else + return !(SDL_gfxBlitRGBA(image->mSDLSurface, &srcRect, mTarget, &dstRect) < 0); } void Graphics::drawImage(gcn::Image const *image, int srcX, int srcY, |