src/glsl/ir_rvalue_visitor.cpp

   1 /*
   2  * Copyright © 2010 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  21  * DEALINGS IN THE SOFTWARE.
  22  */
  23
  24 /**
  25  * \file ir_rvalue_visitor.cpp
  26  *
  27  * Generic class to implement the common pattern we have of wanting to
  28  * visit each ir_rvalue * and possibly change that node to a different
  29  * class.
  30  */
  31
  32 #include "ir.h"
  33 #include "ir_visitor.h"
  34 #include "ir_rvalue_visitor.h"
  35 #include "glsl_types.h"
  36
  37 ir_visitor_status
  38 ir_rvalue_base_visitor::rvalue_visit(ir_expression *ir)
  39 {
  40    unsigned int operand;
  41
  42    for (operand = 0; operand < ir->get_num_operands(); operand++) {
  43       handle_rvalue(&ir->operands[operand]);
  44    }
  45
  46    return visit_continue;
  47 }
  48
  49 ir_visitor_status
  50 ir_rvalue_base_visitor::rvalue_visit(ir_texture *ir)
  51 {
  52    handle_rvalue(&ir->coordinate);
  53    handle_rvalue(&ir->projector);
  54    handle_rvalue(&ir->shadow_comparitor);
  55    handle_rvalue(&ir->offset);
  56
  57    switch (ir->op) {
  58    case ir_tex:
  59    case ir_lod:
  60    case ir_tg4:
  61       break;
  62    case ir_txb:
  63       handle_rvalue(&ir->lod_info.bias);
  64       break;
  65    case ir_txf:
  66    case ir_txl:
  67    case ir_txs:
  68       handle_rvalue(&ir->lod_info.lod);
  69       break;
  70    case ir_txf_ms:
  71       handle_rvalue(&ir->lod_info.sample_index);
  72       break;
  73    case ir_txd:
  74       handle_rvalue(&ir->lod_info.grad.dPdx);
  75       handle_rvalue(&ir->lod_info.grad.dPdy);
  76       break;
  77    }
  78
  79    return visit_continue;
  80 }
  81
  82 ir_visitor_status
  83 ir_rvalue_base_visitor::rvalue_visit(ir_swizzle *ir)
  84 {
  85    handle_rvalue(&ir->val);
  86    return visit_continue;
  87 }
  88
  89 ir_visitor_status
  90 ir_rvalue_base_visitor::rvalue_visit(ir_dereference_array *ir)
  91 {
  92    /* The array index is not the target of the assignment, so clear the
  93     * 'in_assignee' flag.  Restore it after returning from the array index.
  94     */
  95    const bool was_in_assignee = this->in_assignee;
  96    this->in_assignee = false;
  97    handle_rvalue(&ir->array_index);
  98    this->in_assignee = was_in_assignee;
  99
 100    handle_rvalue(&ir->array);
 101    return visit_continue;
 102 }
 103
 104 ir_visitor_status
 105 ir_rvalue_base_visitor::rvalue_visit(ir_dereference_record *ir)
 106 {
 107    handle_rvalue(&ir->record);
 108    return visit_continue;
 109 }
 110
 111 ir_visitor_status
 112 ir_rvalue_base_visitor::rvalue_visit(ir_assignment *ir)
 113 {
 114    handle_rvalue(&ir->rhs);
 115    handle_rvalue(&ir->condition);
 116
 117    return visit_continue;
 118 }
 119
 120 ir_visitor_status
 121 ir_rvalue_base_visitor::rvalue_visit(ir_call *ir)
 122 {
 123    foreach_iter(exec_list_iterator, iter, *ir) {
 124       ir_rvalue *param = (ir_rvalue *)iter.get();
 125       ir_rvalue *new_param = param;
 126       handle_rvalue(&new_param);
 127
 128       if (new_param != param) {
 129          param->replace_with(new_param);
 130       }
 131    }
 132    return visit_continue;
 133 }
 134
 135 ir_visitor_status
 136 ir_rvalue_base_visitor::rvalue_visit(ir_return *ir)
 137 {
 138    handle_rvalue(&ir->value);;
 139    return visit_continue;
 140 }
 141
 142 ir_visitor_status
 143 ir_rvalue_base_visitor::rvalue_visit(ir_if *ir)
 144 {
 145    handle_rvalue(&ir->condition);
 146    return visit_continue;
 147 }
 148
 149
 150 ir_visitor_status
 151 ir_rvalue_visitor::visit_leave(ir_expression *ir)
 152 {
 153    return rvalue_visit(ir);
 154 }
 155
 156 ir_visitor_status
 157 ir_rvalue_visitor::visit_leave(ir_texture *ir)
 158 {
 159    return rvalue_visit(ir);
 160 }
 161
 162 ir_visitor_status
 163 ir_rvalue_visitor::visit_leave(ir_swizzle *ir)
 164 {
 165    return rvalue_visit(ir);
 166 }
 167
 168 ir_visitor_status
 169 ir_rvalue_visitor::visit_leave(ir_dereference_array *ir)
 170 {
 171    return rvalue_visit(ir);
 172 }
 173
 174 ir_visitor_status
 175 ir_rvalue_visitor::visit_leave(ir_dereference_record *ir)
 176 {
 177    return rvalue_visit(ir);
 178 }
 179
 180 ir_visitor_status
 181 ir_rvalue_visitor::visit_leave(ir_assignment *ir)
 182 {
 183    return rvalue_visit(ir);
 184 }
 185
 186 ir_visitor_status
 187 ir_rvalue_visitor::visit_leave(ir_call *ir)
 188 {
 189    return rvalue_visit(ir);
 190 }
 191
 192 ir_visitor_status
 193 ir_rvalue_visitor::visit_leave(ir_return *ir)
 194 {
 195    return rvalue_visit(ir);
 196 }
 197
 198 ir_visitor_status
 199 ir_rvalue_visitor::visit_leave(ir_if *ir)
 200 {
 201    return rvalue_visit(ir);
 202 }
 203
 204 ir_visitor_status
 205 ir_rvalue_enter_visitor::visit_enter(ir_expression *ir)
 206 {
 207    return rvalue_visit(ir);
 208 }
 209
 210 ir_visitor_status
 211 ir_rvalue_enter_visitor::visit_enter(ir_texture *ir)
 212 {
 213    return rvalue_visit(ir);
 214 }
 215
 216 ir_visitor_status
 217 ir_rvalue_enter_visitor::visit_enter(ir_swizzle *ir)
 218 {
 219    return rvalue_visit(ir);
 220 }
 221
 222 ir_visitor_status
 223 ir_rvalue_enter_visitor::visit_enter(ir_dereference_array *ir)
 224 {
 225    return rvalue_visit(ir);
 226 }
 227
 228 ir_visitor_status
 229 ir_rvalue_enter_visitor::visit_enter(ir_dereference_record *ir)
 230 {
 231    return rvalue_visit(ir);
 232 }
 233
 234 ir_visitor_status
 235 ir_rvalue_enter_visitor::visit_enter(ir_assignment *ir)
 236 {
 237    return rvalue_visit(ir);
 238 }
 239
 240 ir_visitor_status
 241 ir_rvalue_enter_visitor::visit_enter(ir_call *ir)
 242 {
 243    return rvalue_visit(ir);
 244 }
 245
 246 ir_visitor_status
 247 ir_rvalue_enter_visitor::visit_enter(ir_return *ir)
 248 {
 249    return rvalue_visit(ir);
 250 }
 251
 252 ir_visitor_status
 253 ir_rvalue_enter_visitor::visit_enter(ir_if *ir)
 254 {
 255    return rvalue_visit(ir);
 256 }