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
  39 #include "lp_bld_blend.h"
  40
  41
  42 LLVMValueRef
  43 lp_build_logicop(LLVMBuilderRef builder,
  44                  unsigned logicop_func,
  45                  LLVMValueRef src,
  46                  LLVMValueRef dst)
  47 {
  48    LLVMTypeRef type;
  49    LLVMValueRef res;
  50
  51    type = LLVMTypeOf(src);
  52
  53    switch (logicop_func) {
  54    case PIPE_LOGICOP_CLEAR:
  55       res = LLVMConstNull(type);
  56       break;
  57    case PIPE_LOGICOP_NOR:
  58       res = LLVMBuildNot(builder, LLVMBuildOr(builder, src, dst, ""), "");
  59       break;
  60    case PIPE_LOGICOP_AND_INVERTED:
  61       res = LLVMBuildAnd(builder, LLVMBuildNot(builder, src, ""), dst, "");
  62       break;
  63    case PIPE_LOGICOP_COPY_INVERTED:
  64       res = LLVMBuildNot(builder, src, "");
  65       break;
  66    case PIPE_LOGICOP_AND_REVERSE:
  67       res = LLVMBuildAnd(builder, src, LLVMBuildNot(builder, dst, ""), "");
  68       break;
  69    case PIPE_LOGICOP_INVERT:
  70       res = LLVMBuildNot(builder, dst, "");
  71       break;
  72    case PIPE_LOGICOP_XOR:
  73       res = LLVMBuildXor(builder, src, dst, "");
  74       break;
  75    case PIPE_LOGICOP_NAND:
  76       res = LLVMBuildNot(builder, LLVMBuildAnd(builder, src, dst, ""), "");
  77       break;
  78    case PIPE_LOGICOP_AND:
  79       res = LLVMBuildAnd(builder, src, dst, "");
  80       break;
  81    case PIPE_LOGICOP_EQUIV:
  82       res = LLVMBuildNot(builder, LLVMBuildXor(builder, src, dst, ""), "");
  83       break;
  84    case PIPE_LOGICOP_NOOP:
  85       res = dst;
  86       break;
  87    case PIPE_LOGICOP_OR_INVERTED:
  88       res = LLVMBuildOr(builder, LLVMBuildNot(builder, src, ""), dst, "");
  89       break;
  90    case PIPE_LOGICOP_COPY:
  91       res = src;
  92       break;
  93    case PIPE_LOGICOP_OR_REVERSE:
  94       res = LLVMBuildOr(builder, src, LLVMBuildNot(builder, dst, ""), "");
  95       break;
  96    case PIPE_LOGICOP_OR:
  97       res = LLVMBuildOr(builder, src, dst, "");
  98       break;
  99    case PIPE_LOGICOP_SET:
 100       res = LLVMConstAllOnes(type);
 101       break;
 102    default:
 103       assert(0);
 104       res = src;
 105    }
 106
 107    return res;
 108 }