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    case ir_texture_samples:
  62       break;
  63    case ir_txb:
  64       handle_rvalue(&ir->lod_info.bias);
  65       break;
  66    case ir_txf:
  67    case ir_txl:
  68    case ir_txs:
  69       handle_rvalue(&ir->lod_info.lod);
  70       break;
  71    case ir_txf_ms:
  72       handle_rvalue(&ir->lod_info.sample_index);
  73       break;
  74    case ir_txd:
  75       handle_rvalue(&ir->lod_info.grad.dPdx);
  76       handle_rvalue(&ir->lod_info.grad.dPdy);
  77       break;
  78    case ir_tg4:
  79       handle_rvalue(&ir->lod_info.component);
  80       break;
  81    }
  82
  83    return visit_continue;
  84 }
  85
  86 ir_visitor_status
  87 ir_rvalue_base_visitor::rvalue_visit(ir_swizzle *ir)
  88 {
  89    handle_rvalue(&ir->val);
  90    return visit_continue;
  91 }
  92
  93 ir_visitor_status
  94 ir_rvalue_base_visitor::rvalue_visit(ir_dereference_array *ir)
  95 {
  96    /* The array index is not the target of the assignment, so clear the
  97     * 'in_assignee' flag.  Restore it after returning from the array index.
  98     */
  99    const bool was_in_assignee = this->in_assignee;
 100    this->in_assignee = false;
 101    handle_rvalue(&ir->array_index);
 102    this->in_assignee = was_in_assignee;
 103
 104    handle_rvalue(&ir->array);
 105    return visit_continue;
 106 }
 107
 108 ir_visitor_status
 109 ir_rvalue_base_visitor::rvalue_visit(ir_dereference_record *ir)
 110 {
 111    handle_rvalue(&ir->record);
 112    return visit_continue;
 113 }
 114
 115 ir_visitor_status
 116 ir_rvalue_base_visitor::rvalue_visit(ir_assignment *ir)
 117 {
 118    handle_rvalue(&ir->rhs);
 119    handle_rvalue(&ir->condition);
 120
 121    return visit_continue;
 122 }
 123
 124 ir_visitor_status
 125 ir_rvalue_base_visitor::rvalue_visit(ir_call *ir)
 126 {
 127    foreach_in_list_safe(ir_rvalue, param, &ir->actual_parameters) {
 128       ir_rvalue *new_param = param;
 129       handle_rvalue(&new_param);
 130
 131       if (new_param != param) {
 132          param->replace_with(new_param);
 133       }
 134    }
 135    return visit_continue;
 136 }
 137
 138 ir_visitor_status
 139 ir_rvalue_base_visitor::rvalue_visit(ir_discard *ir)
 140 {
 141    handle_rvalue(&ir->condition);
 142    return visit_continue;
 143 }
 144
 145 ir_visitor_status
 146 ir_rvalue_base_visitor::rvalue_visit(ir_return *ir)
 147 {
 148    handle_rvalue(&ir->value);;
 149    return visit_continue;
 150 }
 151
 152 ir_visitor_status
 153 ir_rvalue_base_visitor::rvalue_visit(ir_if *ir)
 154 {
 155    handle_rvalue(&ir->condition);
 156    return visit_continue;
 157 }
 158
 159 ir_visitor_status
 160 ir_rvalue_base_visitor::rvalue_visit(ir_emit_vertex *ir)
 161 {
 162    handle_rvalue(&ir->stream);
 163    return visit_continue;
 164 }
 165
 166 ir_visitor_status
 167 ir_rvalue_base_visitor::rvalue_visit(ir_end_primitive *ir)
 168 {
 169    handle_rvalue(&ir->stream);
 170    return visit_continue;
 171 }
 172
 173 ir_visitor_status
 174 ir_rvalue_visitor::visit_leave(ir_expression *ir)
 175 {
 176    return rvalue_visit(ir);
 177 }
 178
 179 ir_visitor_status
 180 ir_rvalue_visitor::visit_leave(ir_texture *ir)
 181 {
 182    return rvalue_visit(ir);
 183 }
 184
 185 ir_visitor_status
 186 ir_rvalue_visitor::visit_leave(ir_swizzle *ir)
 187 {
 188    return rvalue_visit(ir);
 189 }
 190
 191 ir_visitor_status
 192 ir_rvalue_visitor::visit_leave(ir_dereference_array *ir)
 193 {
 194    return rvalue_visit(ir);
 195 }
 196
 197 ir_visitor_status
 198 ir_rvalue_visitor::visit_leave(ir_dereference_record *ir)
 199 {
 200    return rvalue_visit(ir);
 201 }
 202
 203 ir_visitor_status
 204 ir_rvalue_visitor::visit_leave(ir_assignment *ir)
 205 {
 206    return rvalue_visit(ir);
 207 }
 208
 209 ir_visitor_status
 210 ir_rvalue_visitor::visit_leave(ir_call *ir)
 211 {
 212    return rvalue_visit(ir);
 213 }
 214
 215 ir_visitor_status
 216 ir_rvalue_visitor::visit_leave(ir_discard *ir)
 217 {
 218    return rvalue_visit(ir);
 219 }
 220
 221 ir_visitor_status
 222 ir_rvalue_visitor::visit_leave(ir_return *ir)
 223 {
 224    return rvalue_visit(ir);
 225 }
 226
 227 ir_visitor_status
 228 ir_rvalue_visitor::visit_leave(ir_if *ir)
 229 {
 230    return rvalue_visit(ir);
 231 }
 232
 233 ir_visitor_status
 234 ir_rvalue_visitor::visit_leave(ir_emit_vertex *ir)
 235 {
 236    return rvalue_visit(ir);
 237 }
 238
 239 ir_visitor_status
 240 ir_rvalue_visitor::visit_leave(ir_end_primitive *ir)
 241 {
 242    return rvalue_visit(ir);
 243 }
 244
 245 ir_visitor_status
 246 ir_rvalue_enter_visitor::visit_enter(ir_expression *ir)
 247 {
 248    return rvalue_visit(ir);
 249 }
 250
 251 ir_visitor_status
 252 ir_rvalue_enter_visitor::visit_enter(ir_texture *ir)
 253 {
 254    return rvalue_visit(ir);
 255 }
 256
 257 ir_visitor_status
 258 ir_rvalue_enter_visitor::visit_enter(ir_swizzle *ir)
 259 {
 260    return rvalue_visit(ir);
 261 }
 262
 263 ir_visitor_status
 264 ir_rvalue_enter_visitor::visit_enter(ir_dereference_array *ir)
 265 {
 266    return rvalue_visit(ir);
 267 }
 268
 269 ir_visitor_status
 270 ir_rvalue_enter_visitor::visit_enter(ir_dereference_record *ir)
 271 {
 272    return rvalue_visit(ir);
 273 }
 274
 275 ir_visitor_status
 276 ir_rvalue_enter_visitor::visit_enter(ir_assignment *ir)
 277 {
 278    return rvalue_visit(ir);
 279 }
 280
 281 ir_visitor_status
 282 ir_rvalue_enter_visitor::visit_enter(ir_call *ir)
 283 {
 284    return rvalue_visit(ir);
 285 }
 286
 287 ir_visitor_status
 288 ir_rvalue_enter_visitor::visit_enter(ir_discard *ir)
 289 {
 290    return rvalue_visit(ir);
 291 }
 292
 293 ir_visitor_status
 294 ir_rvalue_enter_visitor::visit_enter(ir_return *ir)
 295 {
 296    return rvalue_visit(ir);
 297 }
 298
 299 ir_visitor_status
 300 ir_rvalue_enter_visitor::visit_enter(ir_if *ir)
 301 {
 302    return rvalue_visit(ir);
 303 }
 304
 305 ir_visitor_status
 306 ir_rvalue_enter_visitor::visit_enter(ir_emit_vertex *ir)
 307 {
 308    return rvalue_visit(ir);
 309 }
 310
 311 ir_visitor_status
 312 ir_rvalue_enter_visitor::visit_enter(ir_end_primitive *ir)
 313 {
 314    return rvalue_visit(ir);
 315 }