mpcc_alpha_blend_mode
state->mpc.mpcc_alpha_blend_mode[i] = plane_state->per_pixel_alpha ? 1 : 0;
state->mpc.mpcc_alpha_blend_mode[i] = 0;
uint32_t mpcc_alpha_blend_mode[MAX_PIPES]; /* MPCC_CONTROL->MPCC_ALPHA_BLND_MODE from blend_cfg.alpha_mode */
enum mpcc_alpha_blend_mode alpha_mode;