Function sdl2_sys::SDL_ComposeCustomBlendMode

pub unsafe extern "C" fn SDL_ComposeCustomBlendMode(
    srcColorFactor: SDL_BlendFactor, 
    dstColorFactor: SDL_BlendFactor, 
    colorOperation: SDL_BlendOperation, 
    srcAlphaFactor: SDL_BlendFactor, 
    dstAlphaFactor: SDL_BlendFactor, 
    alphaOperation: SDL_BlendOperation
) -> SDL_BlendMode

\brief Create a custom blend mode, which may or may not be supported by a given renderer

\param srcColorFactor source color factor \param dstColorFactor destination color factor \param colorOperation color operation \param srcAlphaFactor source alpha factor \param dstAlphaFactor destination alpha factor \param alphaOperation alpha operation

The result of the blend mode operation will be: dstRGB = dstRGB * dstColorFactor colorOperation srcRGB * srcColorFactor and dstA = dstA * dstAlphaFactor alphaOperation srcA * srcAlphaFactor