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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