2911    const float dadx = mach->InterpCoefs[attrib].dadx[chan];  in interp_linear_offset()  local
2913    const float delta = ofs_x * dadx + ofs_y * dady;  in interp_linear_offset()
2927    const float dadx = mach->InterpCoefs[attrib].dadx[chan];  in eval_linear_coef()  local
2929    const float a0 = mach->InterpCoefs[attrib].a0[chan] + dadx * x + dady * y;  in eval_linear_coef()
2932    mach->Inputs[attrib].xyzw[chan].f[1] = a0 + dadx;  in eval_linear_coef()
2934    mach->Inputs[attrib].xyzw[chan].f[3] = a0 + dadx + dady;  in eval_linear_coef()
2951    const float dadx = mach->InterpCoefs[attrib].dadx[chan];  in interp_perspective_offset()  local
2954    const float delta = ofs_x * dadx + ofs_y * dady;  in interp_perspective_offset()
2969    const float dadx = mach->InterpCoefs[attrib].dadx[chan];  in eval_perspective_coef()  local
2971    const float a0 = mach->InterpCoefs[attrib].a0[chan] + dadx * x + dady * y;  in eval_perspective_coef()
2975    mach->Inputs[attrib].xyzw[chan].f[1] = (a0 + dadx) / w[1];  in eval_perspective_coef()
2977    mach->Inputs[attrib].xyzw[chan].f[3] = (a0 + dadx + dady) / w[3];  in eval_perspective_coef()