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_list_safe(n, &ir->actual_parameters) {
 127       ir_rvalue *param = (ir_rvalue *) n;
 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_return *ir)
 140 {
 141    handle_rvalue(&ir->value);;
 142    return visit_continue;
 143 }
 144
 145 ir_visitor_status
 146 ir_rvalue_base_visitor::rvalue_visit(ir_if *ir)
 147 {
 148    handle_rvalue(&ir->condition);
 149    return visit_continue;
 150 }
 151
 152
 153 ir_visitor_status
 154 ir_rvalue_visitor::visit_leave(ir_expression *ir)
 155 {
 156    return rvalue_visit(ir);
 157 }
 158
 159 ir_visitor_status
 160 ir_rvalue_visitor::visit_leave(ir_texture *ir)
 161 {
 162    return rvalue_visit(ir);
 163 }
 164
 165 ir_visitor_status
 166 ir_rvalue_visitor::visit_leave(ir_swizzle *ir)
 167 {
 168    return rvalue_visit(ir);
 169 }
 170
 171 ir_visitor_status
 172 ir_rvalue_visitor::visit_leave(ir_dereference_array *ir)
 173 {
 174    return rvalue_visit(ir);
 175 }
 176
 177 ir_visitor_status
 178 ir_rvalue_visitor::visit_leave(ir_dereference_record *ir)
 179 {
 180    return rvalue_visit(ir);
 181 }
 182
 183 ir_visitor_status
 184 ir_rvalue_visitor::visit_leave(ir_assignment *ir)
 185 {
 186    return rvalue_visit(ir);
 187 }
 188
 189 ir_visitor_status
 190 ir_rvalue_visitor::visit_leave(ir_call *ir)
 191 {
 192    return rvalue_visit(ir);
 193 }
 194
 195 ir_visitor_status
 196 ir_rvalue_visitor::visit_leave(ir_return *ir)
 197 {
 198    return rvalue_visit(ir);
 199 }
 200
 201 ir_visitor_status
 202 ir_rvalue_visitor::visit_leave(ir_if *ir)
 203 {
 204    return rvalue_visit(ir);
 205 }
 206
 207 ir_visitor_status
 208 ir_rvalue_enter_visitor::visit_enter(ir_expression *ir)
 209 {
 210    return rvalue_visit(ir);
 211 }
 212
 213 ir_visitor_status
 214 ir_rvalue_enter_visitor::visit_enter(ir_texture *ir)
 215 {
 216    return rvalue_visit(ir);
 217 }
 218
 219 ir_visitor_status
 220 ir_rvalue_enter_visitor::visit_enter(ir_swizzle *ir)
 221 {
 222    return rvalue_visit(ir);
 223 }
 224
 225 ir_visitor_status
 226 ir_rvalue_enter_visitor::visit_enter(ir_dereference_array *ir)
 227 {
 228    return rvalue_visit(ir);
 229 }
 230
 231 ir_visitor_status
 232 ir_rvalue_enter_visitor::visit_enter(ir_dereference_record *ir)
 233 {
 234    return rvalue_visit(ir);
 235 }
 236
 237 ir_visitor_status
 238 ir_rvalue_enter_visitor::visit_enter(ir_assignment *ir)
 239 {
 240    return rvalue_visit(ir);
 241 }
 242
 243 ir_visitor_status
 244 ir_rvalue_enter_visitor::visit_enter(ir_call *ir)
 245 {
 246    return rvalue_visit(ir);
 247 }
 248
 249 ir_visitor_status
 250 ir_rvalue_enter_visitor::visit_enter(ir_return *ir)
 251 {
 252    return rvalue_visit(ir);
 253 }
 254
 255 ir_visitor_status
 256 ir_rvalue_enter_visitor::visit_enter(ir_if *ir)
 257 {
 258    return rvalue_visit(ir);
 259 }