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_query_levels:
  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    case ir_tg4:
  78       handle_rvalue(&ir->lod_info.component);
  79       break;
  80    }
  81
  82    return visit_continue;
  83 }
  84
  85 ir_visitor_status
  86 ir_rvalue_base_visitor::rvalue_visit(ir_swizzle *ir)
  87 {
  88    handle_rvalue(&ir->val);
  89    return visit_continue;
  90 }
  91
  92 ir_visitor_status
  93 ir_rvalue_base_visitor::rvalue_visit(ir_dereference_array *ir)
  94 {
  95    /* The array index is not the target of the assignment, so clear the
  96     * 'in_assignee' flag.  Restore it after returning from the array index.
  97     */
  98    const bool was_in_assignee = this->in_assignee;
  99    this->in_assignee = false;
 100    handle_rvalue(&ir->array_index);
 101    this->in_assignee = was_in_assignee;
 102
 103    handle_rvalue(&ir->array);
 104    return visit_continue;
 105 }
 106
 107 ir_visitor_status
 108 ir_rvalue_base_visitor::rvalue_visit(ir_dereference_record *ir)
 109 {
 110    handle_rvalue(&ir->record);
 111    return visit_continue;
 112 }
 113
 114 ir_visitor_status
 115 ir_rvalue_base_visitor::rvalue_visit(ir_assignment *ir)
 116 {
 117    handle_rvalue(&ir->rhs);
 118    handle_rvalue(&ir->condition);
 119
 120    return visit_continue;
 121 }
 122
 123 ir_visitor_status
 124 ir_rvalue_base_visitor::rvalue_visit(ir_call *ir)
 125 {
 126    foreach_in_list_safe(ir_rvalue, param, &ir->actual_parameters) {
 127       ir_rvalue *new_param = param;
 128       handle_rvalue(&new_param);
 129
 130       if (new_param != param) {
 131          param->replace_with(new_param);
 132       }
 133    }
 134    return visit_continue;
 135 }
 136
 137 ir_visitor_status
 138 ir_rvalue_base_visitor::rvalue_visit(ir_discard *ir)
 139 {
 140    handle_rvalue(&ir->condition);
 141    return visit_continue;
 142 }
 143
 144 ir_visitor_status
 145 ir_rvalue_base_visitor::rvalue_visit(ir_return *ir)
 146 {
 147    handle_rvalue(&ir->value);;
 148    return visit_continue;
 149 }
 150
 151 ir_visitor_status
 152 ir_rvalue_base_visitor::rvalue_visit(ir_if *ir)
 153 {
 154    handle_rvalue(&ir->condition);
 155    return visit_continue;
 156 }
 157
 158 ir_visitor_status
 159 ir_rvalue_base_visitor::rvalue_visit(ir_emit_vertex *ir)
 160 {
 161    handle_rvalue(&ir->stream);
 162    return visit_continue;
 163 }
 164
 165 ir_visitor_status
 166 ir_rvalue_base_visitor::rvalue_visit(ir_end_primitive *ir)
 167 {
 168    handle_rvalue(&ir->stream);
 169    return visit_continue;
 170 }
 171
 172 ir_visitor_status
 173 ir_rvalue_visitor::visit_leave(ir_expression *ir)
 174 {
 175    return rvalue_visit(ir);
 176 }
 177
 178 ir_visitor_status
 179 ir_rvalue_visitor::visit_leave(ir_texture *ir)
 180 {
 181    return rvalue_visit(ir);
 182 }
 183
 184 ir_visitor_status
 185 ir_rvalue_visitor::visit_leave(ir_swizzle *ir)
 186 {
 187    return rvalue_visit(ir);
 188 }
 189
 190 ir_visitor_status
 191 ir_rvalue_visitor::visit_leave(ir_dereference_array *ir)
 192 {
 193    return rvalue_visit(ir);
 194 }
 195
 196 ir_visitor_status
 197 ir_rvalue_visitor::visit_leave(ir_dereference_record *ir)
 198 {
 199    return rvalue_visit(ir);
 200 }
 201
 202 ir_visitor_status
 203 ir_rvalue_visitor::visit_leave(ir_assignment *ir)
 204 {
 205    return rvalue_visit(ir);
 206 }
 207
 208 ir_visitor_status
 209 ir_rvalue_visitor::visit_leave(ir_call *ir)
 210 {
 211    return rvalue_visit(ir);
 212 }
 213
 214 ir_visitor_status
 215 ir_rvalue_visitor::visit_leave(ir_discard *ir)
 216 {
 217    return rvalue_visit(ir);
 218 }
 219
 220 ir_visitor_status
 221 ir_rvalue_visitor::visit_leave(ir_return *ir)
 222 {
 223    return rvalue_visit(ir);
 224 }
 225
 226 ir_visitor_status
 227 ir_rvalue_visitor::visit_leave(ir_if *ir)
 228 {
 229    return rvalue_visit(ir);
 230 }
 231
 232 ir_visitor_status
 233 ir_rvalue_visitor::visit_leave(ir_emit_vertex *ir)
 234 {
 235    return rvalue_visit(ir);
 236 }
 237
 238 ir_visitor_status
 239 ir_rvalue_visitor::visit_leave(ir_end_primitive *ir)
 240 {
 241    return rvalue_visit(ir);
 242 }
 243
 244 ir_visitor_status
 245 ir_rvalue_enter_visitor::visit_enter(ir_expression *ir)
 246 {
 247    return rvalue_visit(ir);
 248 }
 249
 250 ir_visitor_status
 251 ir_rvalue_enter_visitor::visit_enter(ir_texture *ir)
 252 {
 253    return rvalue_visit(ir);
 254 }
 255
 256 ir_visitor_status
 257 ir_rvalue_enter_visitor::visit_enter(ir_swizzle *ir)
 258 {
 259    return rvalue_visit(ir);
 260 }
 261
 262 ir_visitor_status
 263 ir_rvalue_enter_visitor::visit_enter(ir_dereference_array *ir)
 264 {
 265    return rvalue_visit(ir);
 266 }
 267
 268 ir_visitor_status
 269 ir_rvalue_enter_visitor::visit_enter(ir_dereference_record *ir)
 270 {
 271    return rvalue_visit(ir);
 272 }
 273
 274 ir_visitor_status
 275 ir_rvalue_enter_visitor::visit_enter(ir_assignment *ir)
 276 {
 277    return rvalue_visit(ir);
 278 }
 279
 280 ir_visitor_status
 281 ir_rvalue_enter_visitor::visit_enter(ir_call *ir)
 282 {
 283    return rvalue_visit(ir);
 284 }
 285
 286 ir_visitor_status
 287 ir_rvalue_enter_visitor::visit_enter(ir_discard *ir)
 288 {
 289    return rvalue_visit(ir);
 290 }
 291
 292 ir_visitor_status
 293 ir_rvalue_enter_visitor::visit_enter(ir_return *ir)
 294 {
 295    return rvalue_visit(ir);
 296 }
 297
 298 ir_visitor_status
 299 ir_rvalue_enter_visitor::visit_enter(ir_if *ir)
 300 {
 301    return rvalue_visit(ir);
 302 }
 303
 304 ir_visitor_status
 305 ir_rvalue_enter_visitor::visit_enter(ir_emit_vertex *ir)
 306 {
 307    return rvalue_visit(ir);
 308 }
 309
 310 ir_visitor_status
 311 ir_rvalue_enter_visitor::visit_enter(ir_end_primitive *ir)
 312 {
 313    return rvalue_visit(ir);
 314 }