Wraps SDL_GetTextureBlendMode which gets the dsdl2.Texture's dsdl2.BlendMode defining drawing
dsdl2.BlendMode of the dsdl2.Texture
dsdl2.SDLException if dsdl2.BlendMode unable to get
See Implementation
Wraps SDL_GetTextureBlendMode which gets the dsdl2.Texture's dsdl2.BlendMode defining drawing