src/gallium/auxiliary/util/u_dual_blend.h

   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