diff options
Diffstat (limited to 'backends/graphics/opengl/texture.cpp')
| -rw-r--r-- | backends/graphics/opengl/texture.cpp | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/backends/graphics/opengl/texture.cpp b/backends/graphics/opengl/texture.cpp index da4ebeb1e4..a607528915 100644 --- a/backends/graphics/opengl/texture.cpp +++ b/backends/graphics/opengl/texture.cpp @@ -346,6 +346,26 @@ Graphics::PixelFormat TextureCLUT8::getFormat() const { return Graphics::PixelFormat::createFormatCLUT8(); } +void TextureCLUT8::setColorKey(uint colorKey) { + // We remove all alpha bits from the palette entry of the color key. + // This makes sure its properly handled as color key. + const Graphics::PixelFormat &hardwareFormat = getHardwareFormat(); + const uint32 aMask = (0xFF >> hardwareFormat.aLoss) << hardwareFormat.aShift; + + if (hardwareFormat.bytesPerPixel == 2) { + uint16 *palette = (uint16 *)_palette + colorKey; + *palette &= ~aMask; + } else if (hardwareFormat.bytesPerPixel == 4) { + uint32 *palette = (uint32 *)_palette + colorKey; + *palette &= ~aMask; + } else { + warning("TextureCLUT8::setColorKey: Unsupported pixel depth %d", hardwareFormat.bytesPerPixel); + } + + // A palette changes means we need to refresh the whole surface. + flagDirty(); +} + namespace { template<typename ColorType> inline void convertPalette(ColorType *dst, const byte *src, uint colors, const Graphics::PixelFormat &format) { |