diff options
Diffstat (limited to 'src/graphics.cpp')
| -rw-r--r-- | src/graphics.cpp | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/src/graphics.cpp b/src/graphics.cpp index 6dc3cede8..507f16a6e 100644 --- a/src/graphics.cpp +++ b/src/graphics.cpp @@ -1325,6 +1325,15 @@ void Graphics::fillRectangle(const gcn::Rectangle& rectangle) const unsigned gMask = format->Gmask; const unsigned bMask = format->Bmask; const unsigned aMask = format->Amask; + unsigned rShift = rMask / 0xff; + unsigned gShift = gMask / 0xff; + unsigned bShift = bMask / 0xff; + if (!rShift) + rShift = 1; + if (!gShift) + gShift = 1; + if (!bShift) + bShift = 1; if (pixel != mOldPixel || mColor.a != mOldAlpha) { const unsigned pb = (pixel & bMask) * mColor.a; @@ -1332,9 +1341,9 @@ void Graphics::fillRectangle(const gcn::Rectangle& rectangle) const unsigned pr = (pixel & rMask) * mColor.a; const unsigned a0 = (255 - mColor.a); - const unsigned int a1 = a0 * bMask / 0xff; - const unsigned int a2 = a0 * gMask / 0xff; - const unsigned int a3 = a0 * rMask / 0xff; + const unsigned int a1 = a0 * bShift; + const unsigned int a2 = a0 * gShift; + const unsigned int a3 = a0 * rShift; for (int f = 0; f <= 0xff; f ++) { @@ -1356,8 +1365,9 @@ void Graphics::fillRectangle(const gcn::Rectangle& rectangle) { uint32_t *const p = p0 + x; const uint32_t dst = *p; - *p = cB[dst & bMask] | cG[(dst & gMask) >> 8] - | cR[(dst & 0xff0000) >> 16]; + *p = cB[dst & bMask / bShift] + | cG[(dst & gMask) / gShift] + | cR[(dst & rMask) / rShift]; } } #endif |