src/compiler/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 "compiler/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    case ir_samples_identical:
  63       break;
  64    case ir_txb:
  65       handle_rvalue(&ir->lod_info.bias);
  66       break;
  67    case ir_txf:
  68    case ir_txl:
  69    case ir_txs:
  70       handle_rvalue(&ir->lod_info.lod);
  71       break;
  72    case ir_txf_ms:
  73       handle_rvalue(&ir->lod_info.sample_index);
  74       break;
  75    case ir_txd:
  76       handle_rvalue(&ir->lod_info.grad.dPdx);
  77       handle_rvalue(&ir->lod_info.grad.dPdy);
  78       break;
  79    case ir_tg4:
  80       handle_rvalue(&ir->lod_info.component);
  81       break;
  82    }
  83
  84    return visit_continue;
  85 }
  86
  87 ir_visitor_status
  88 ir_rvalue_base_visitor::rvalue_visit(ir_swizzle *ir)
  89 {
  90    handle_rvalue(&ir->val);
  91    return visit_continue;
  92 }
  93
  94 ir_visitor_status
  95 ir_rvalue_base_visitor::rvalue_visit(ir_dereference_array *ir)
  96 {
  97    /* The array index is not the target of the assignment, so clear the
  98     * 'in_assignee' flag.  Restore it after returning from the array index.
  99     */
 100    const bool was_in_assignee = this->in_assignee;
 101    this->in_assignee = false;
 102    handle_rvalue(&ir->array_index);
 103    this->in_assignee = was_in_assignee;
 104
 105    handle_rvalue(&ir->array);
 106    return visit_continue;
 107 }
 108
 109 ir_visitor_status
 110 ir_rvalue_base_visitor::rvalue_visit(ir_dereference_record *ir)
 111 {
 112    handle_rvalue(&ir->record);
 113    return visit_continue;
 114 }
 115
 116 ir_visitor_status
 117 ir_rvalue_base_visitor::rvalue_visit(ir_assignment *ir)
 118 {
 119    handle_rvalue(&ir->rhs);
 120    handle_rvalue(&ir->condition);
 121
 122    return visit_continue;
 123 }
 124
 125 ir_visitor_status
 126 ir_rvalue_base_visitor::rvalue_visit(ir_call *ir)
 127 {
 128    foreach_in_list_safe(ir_rvalue, param, &ir->actual_parameters) {
 129       ir_rvalue *new_param = param;
 130       handle_rvalue(&new_param);
 131
 132       if (new_param != param) {
 133          param->replace_with(new_param);
 134       }
 135    }
 136    return visit_continue;
 137 }
 138
 139 ir_visitor_status
 140 ir_rvalue_base_visitor::rvalue_visit(ir_discard *ir)
 141 {
 142    handle_rvalue(&ir->condition);
 143    return visit_continue;
 144 }
 145
 146 ir_visitor_status
 147 ir_rvalue_base_visitor::rvalue_visit(ir_return *ir)
 148 {
 149    handle_rvalue(&ir->value);;
 150    return visit_continue;
 151 }
 152
 153 ir_visitor_status
 154 ir_rvalue_base_visitor::rvalue_visit(ir_if *ir)
 155 {
 156    handle_rvalue(&ir->condition);
 157    return visit_continue;
 158 }
 159
 160 ir_visitor_status
 161 ir_rvalue_base_visitor::rvalue_visit(ir_emit_vertex *ir)
 162 {
 163    handle_rvalue(&ir->stream);
 164    return visit_continue;
 165 }
 166
 167 ir_visitor_status
 168 ir_rvalue_base_visitor::rvalue_visit(ir_end_primitive *ir)
 169 {
 170    handle_rvalue(&ir->stream);
 171    return visit_continue;
 172 }
 173
 174 ir_visitor_status
 175 ir_rvalue_visitor::visit_leave(ir_expression *ir)
 176 {
 177    return rvalue_visit(ir);
 178 }
 179
 180 ir_visitor_status
 181 ir_rvalue_visitor::visit_leave(ir_texture *ir)
 182 {
 183    return rvalue_visit(ir);
 184 }
 185
 186 ir_visitor_status
 187 ir_rvalue_visitor::visit_leave(ir_swizzle *ir)
 188 {
 189    return rvalue_visit(ir);
 190 }
 191
 192 ir_visitor_status
 193 ir_rvalue_visitor::visit_leave(ir_dereference_array *ir)
 194 {
 195    return rvalue_visit(ir);
 196 }
 197
 198 ir_visitor_status
 199 ir_rvalue_visitor::visit_leave(ir_dereference_record *ir)
 200 {
 201    return rvalue_visit(ir);
 202 }
 203
 204 ir_visitor_status
 205 ir_rvalue_visitor::visit_leave(ir_assignment *ir)
 206 {
 207    return rvalue_visit(ir);
 208 }
 209
 210 ir_visitor_status
 211 ir_rvalue_visitor::visit_leave(ir_call *ir)
 212 {
 213    return rvalue_visit(ir);
 214 }
 215
 216 ir_visitor_status
 217 ir_rvalue_visitor::visit_leave(ir_discard *ir)
 218 {
 219    return rvalue_visit(ir);
 220 }
 221
 222 ir_visitor_status
 223 ir_rvalue_visitor::visit_leave(ir_return *ir)
 224 {
 225    return rvalue_visit(ir);
 226 }
 227
 228 ir_visitor_status
 229 ir_rvalue_visitor::visit_leave(ir_if *ir)
 230 {
 231    return rvalue_visit(ir);
 232 }
 233
 234 ir_visitor_status
 235 ir_rvalue_visitor::visit_leave(ir_emit_vertex *ir)
 236 {
 237    return rvalue_visit(ir);
 238 }
 239
 240 ir_visitor_status
 241 ir_rvalue_visitor::visit_leave(ir_end_primitive *ir)
 242 {
 243    return rvalue_visit(ir);
 244 }
 245
 246 ir_visitor_status
 247 ir_rvalue_enter_visitor::visit_enter(ir_expression *ir)
 248 {
 249    return rvalue_visit(ir);
 250 }
 251
 252 ir_visitor_status
 253 ir_rvalue_enter_visitor::visit_enter(ir_texture *ir)
 254 {
 255    return rvalue_visit(ir);
 256 }
 257
 258 ir_visitor_status
 259 ir_rvalue_enter_visitor::visit_enter(ir_swizzle *ir)
 260 {
 261    return rvalue_visit(ir);
 262 }
 263
 264 ir_visitor_status
 265 ir_rvalue_enter_visitor::visit_enter(ir_dereference_array *ir)
 266 {
 267    return rvalue_visit(ir);
 268 }
 269
 270 ir_visitor_status
 271 ir_rvalue_enter_visitor::visit_enter(ir_dereference_record *ir)
 272 {
 273    return rvalue_visit(ir);
 274 }
 275
 276 ir_visitor_status
 277 ir_rvalue_enter_visitor::visit_enter(ir_assignment *ir)
 278 {
 279    return rvalue_visit(ir);
 280 }
 281
 282 ir_visitor_status
 283 ir_rvalue_enter_visitor::visit_enter(ir_call *ir)
 284 {
 285    return rvalue_visit(ir);
 286 }
 287
 288 ir_visitor_status
 289 ir_rvalue_enter_visitor::visit_enter(ir_discard *ir)
 290 {
 291    return rvalue_visit(ir);
 292 }
 293
 294 ir_visitor_status
 295 ir_rvalue_enter_visitor::visit_enter(ir_return *ir)
 296 {
 297    return rvalue_visit(ir);
 298 }
 299
 300 ir_visitor_status
 301 ir_rvalue_enter_visitor::visit_enter(ir_if *ir)
 302 {
 303    return rvalue_visit(ir);
 304 }
 305
 306 ir_visitor_status
 307 ir_rvalue_enter_visitor::visit_enter(ir_emit_vertex *ir)
 308 {
 309    return rvalue_visit(ir);
 310 }
 311
 312 ir_visitor_status
 313 ir_rvalue_enter_visitor::visit_enter(ir_end_primitive *ir)
 314 {
 315    return rvalue_visit(ir);
 316 }