glBlendEquation(get_gl_blend_equation(blend->equation));
glBlendFunc(get_gl_blend_factor(blend->src_factor), get_gl_blend_factor(blend->dst_factor));
glBlendColor(blend->constant.r, blend->constant.g, blend->constant.b, blend->constant.a);
glBlendEquation(get_gl_blend_equation(blend->equation));
glBlendFunc(get_gl_blend_factor(blend->src_factor), get_gl_blend_factor(blend->dst_factor));
glBlendColor(blend->constant.r, blend->constant.g, blend->constant.b, blend->constant.a);