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  1. #ifndef U_DUAL_BLEND_H
  2. #define U_DUAL_BLEND_H
  3.  
  4. #include "pipe/p_state.h"
  5.  
  6. static INLINE boolean util_blend_factor_is_dual_src(int factor)
  7. {
  8.    return (factor == PIPE_BLENDFACTOR_SRC1_COLOR) ||
  9.           (factor == PIPE_BLENDFACTOR_SRC1_ALPHA) ||
  10.           (factor == PIPE_BLENDFACTOR_INV_SRC1_COLOR) ||
  11.           (factor == PIPE_BLENDFACTOR_INV_SRC1_ALPHA);
  12. }
  13.  
  14. static INLINE boolean util_blend_state_is_dual(const struct pipe_blend_state *blend,
  15.                                   int index)
  16. {
  17.    if (util_blend_factor_is_dual_src(blend->rt[index].rgb_src_factor) ||
  18.        util_blend_factor_is_dual_src(blend->rt[index].alpha_src_factor) ||
  19.        util_blend_factor_is_dual_src(blend->rt[index].rgb_dst_factor) ||
  20.        util_blend_factor_is_dual_src(blend->rt[index].alpha_dst_factor))
  21.       return true;
  22.    return false;
  23. }
  24.  
  25.  
  26. #endif
  27.