src/gallium/drivers/llvmpipe/lp_bld_blend_logicop.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2009 VMware, Inc.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  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 }