src/gallium/auxiliary/gallivm/lp_bld_blend.h

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  27
  28 #ifndef LP_BLD_BLEND_H
  29 #define LP_BLD_BLEND_H
  30
  31
  32 /**
  33  * @file
  34  * LLVM IR building helpers interfaces.
  35  *
  36  * We use LLVM-C bindings for now. They are not documented, but follow the C++
  37  * interfaces very closely, and appear to be complete enough for code
  38  * genration. See
  39  * http://npcontemplation.blogspot.com/2008/06/secret-of-llvm-c-bindings.html
  40  * for a standalone example.
  41  */
  42
  43 #include "gallivm/lp_bld.h"
  44
  45 #include "pipe/p_format.h"
  46
  47
  48 struct pipe_blend_state;
  49 struct lp_type;
  50 struct lp_build_context;
  51
  52
  53 /**
  54  * Whether the blending function is commutative or not.
  55  */
  56 boolean
  57 lp_build_blend_func_commutative(unsigned func);
  58
  59
  60 /**
  61  * Whether the blending functions are the reverse of each other.
  62  */
  63 boolean
  64 lp_build_blend_func_reverse(unsigned rgb_func, unsigned alpha_func);
  65
  66
  67 LLVMValueRef
  68 lp_build_blend_func(struct lp_build_context *bld,
  69                     unsigned func,
  70                     LLVMValueRef term1,
  71                     LLVMValueRef term2);
  72
  73
  74 LLVMValueRef
  75 lp_build_blend_aos(LLVMBuilderRef builder,
  76                    const struct pipe_blend_state *blend,
  77                    struct lp_type type,
  78                    LLVMValueRef src,
  79                    LLVMValueRef dst,
  80                    LLVMValueRef const_,
  81                    unsigned alpha_swizzle);
  82
  83
  84 void
  85 lp_build_blend_soa(LLVMBuilderRef builder,
  86                    const struct pipe_blend_state *blend,
  87                    struct lp_type type,
  88                    LLVMValueRef src[4],
  89                    LLVMValueRef dst[4],
  90                    LLVMValueRef const_[4],
  91                    LLVMValueRef res[4]);
  92
  93
  94 /**
  95  * Apply a logic op.
  96  *
  97  * src/dst parameters are packed values. It should work regardless the inputs
  98  * are scalars, or a vector.
  99  */
 100 LLVMValueRef
 101 lp_build_logicop(LLVMBuilderRef builder,
 102                  unsigned logicop_func,
 103                  LLVMValueRef src,
 104                  LLVMValueRef dst);
 105
 106
 107 #endif /* !LP_BLD_BLEND_H */