src/gallium/auxiliary/gallivm/lp_bld_blend_logicop.c

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  27
  28
  29 /**
  30  * @file
  31  * Blend LLVM IR generation -- logic ops.
  32  *
  33  * @author Jose Fonseca <jfonseca@vmware.com>
  34  */
  35
  36
  37 #include "pipe/p_state.h"
  38 #include "util/u_debug.h"
  39
  40 #include "lp_bld_blend.h"
  41
  42
  43 LLVMValueRef
  44 lp_build_logicop(LLVMBuilderRef builder,
  45                  unsigned logicop_func,
  46                  LLVMValueRef src,
  47                  LLVMValueRef dst)
  48 {
  49    LLVMTypeRef type;
  50    LLVMValueRef res;
  51
  52    type = LLVMTypeOf(src);
  53
  54    switch (logicop_func) {
  55    case PIPE_LOGICOP_CLEAR:
  56       res = LLVMConstNull(type);
  57       break;
  58    case PIPE_LOGICOP_NOR:
  59       res = LLVMBuildNot(builder, LLVMBuildOr(builder, src, dst, ""), "");
  60       break;
  61    case PIPE_LOGICOP_AND_INVERTED:
  62       res = LLVMBuildAnd(builder, LLVMBuildNot(builder, src, ""), dst, "");
  63       break;
  64    case PIPE_LOGICOP_COPY_INVERTED:
  65       res = LLVMBuildNot(builder, src, "");
  66       break;
  67    case PIPE_LOGICOP_AND_REVERSE:
  68       res = LLVMBuildAnd(builder, src, LLVMBuildNot(builder, dst, ""), "");
  69       break;
  70    case PIPE_LOGICOP_INVERT:
  71       res = LLVMBuildNot(builder, dst, "");
  72       break;
  73    case PIPE_LOGICOP_XOR:
  74       res = LLVMBuildXor(builder, src, dst, "");
  75       break;
  76    case PIPE_LOGICOP_NAND:
  77       res = LLVMBuildNot(builder, LLVMBuildAnd(builder, src, dst, ""), "");
  78       break;
  79    case PIPE_LOGICOP_AND:
  80       res = LLVMBuildAnd(builder, src, dst, "");
  81       break;
  82    case PIPE_LOGICOP_EQUIV:
  83       res = LLVMBuildNot(builder, LLVMBuildXor(builder, src, dst, ""), "");
  84       break;
  85    case PIPE_LOGICOP_NOOP:
  86       res = dst;
  87       break;
  88    case PIPE_LOGICOP_OR_INVERTED:
  89       res = LLVMBuildOr(builder, LLVMBuildNot(builder, src, ""), dst, "");
  90       break;
  91    case PIPE_LOGICOP_COPY:
  92       res = src;
  93       break;
  94    case PIPE_LOGICOP_OR_REVERSE:
  95       res = LLVMBuildOr(builder, src, LLVMBuildNot(builder, dst, ""), "");
  96       break;
  97    case PIPE_LOGICOP_OR:
  98       res = LLVMBuildOr(builder, src, dst, "");
  99       break;
 100    case PIPE_LOGICOP_SET:
 101       res = LLVMConstAllOnes(type);
 102       break;
 103    default:
 104       assert(0);
 105       res = src;
 106    }
 107
 108    return res;
 109 }