spirv_cross_util.cpp

   1 /*
   2  * Copyright 2015-2021 Arm Limited
   3  * SPDX-License-Identifier: Apache-2.0 OR MIT
   4  *
   5  * Licensed under the Apache License, Version 2.0 (the "License");
   6  * you may not use this file except in compliance with the License.
   7  * You may obtain a copy of the License at
   8  *
   9  *     http://www.apache.org/licenses/LICENSE-2.0
  10  *
  11  * Unless required by applicable law or agreed to in writing, software
  12  * distributed under the License is distributed on an "AS IS" BASIS,
  13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14  * See the License for the specific language governing permissions and
  15  * limitations under the License.
  16  */
  17
  18 /*
  19  * At your option, you may choose to accept this material under either:
  20  *  1. The Apache License, Version 2.0, found at <http://www.apache.org/licenses/LICENSE-2.0>, or
  21  *  2. The MIT License, found at <http://opensource.org/licenses/MIT>.
  22  */
  23
  24 #include "spirv_cross_util.hpp"
  25 #include "spirv_common.hpp"
  26
  27 using namespace spv;
  28 using namespace SPIRV_CROSS_NAMESPACE;
  29
  30 namespace spirv_cross_util
  31 {
  32 void rename_interface_variable(Compiler &compiler, const SmallVector<Resource> &resources, uint32_t location,
  33                                const std::string &name)
  34 {
  35         for (auto &v : resources)
  36         {
  37                 if (!compiler.has_decoration(v.id, spv::DecorationLocation))
  38                         continue;
  39
  40                 auto loc = compiler.get_decoration(v.id, spv::DecorationLocation);
  41                 if (loc != location)
  42                         continue;
  43
  44                 auto &type = compiler.get_type(v.base_type_id);
  45
  46                 // This is more of a friendly variant. If we need to rename interface variables, we might have to rename
  47                 // structs as well and make sure all the names match up.
  48                 if (type.basetype == SPIRType::Struct)
  49                 {
  50                         compiler.set_name(v.base_type_id, join("SPIRV_Cross_Interface_Location", location));
  51                         for (uint32_t i = 0; i < uint32_t(type.member_types.size()); i++)
  52                                 compiler.set_member_name(v.base_type_id, i, join("InterfaceMember", i));
  53                 }
  54
  55                 compiler.set_name(v.id, name);
  56         }
  57 }
  58
  59 void inherit_combined_sampler_bindings(Compiler &compiler)
  60 {
  61         auto &samplers = compiler.get_combined_image_samplers();
  62         for (auto &s : samplers)
  63         {
  64                 if (compiler.has_decoration(s.image_id, spv::DecorationDescriptorSet))
  65                 {
  66                         uint32_t set = compiler.get_decoration(s.image_id, spv::DecorationDescriptorSet);
  67                         compiler.set_decoration(s.combined_id, spv::DecorationDescriptorSet, set);
  68                 }
  69
  70                 if (compiler.has_decoration(s.image_id, spv::DecorationBinding))
  71                 {
  72                         uint32_t binding = compiler.get_decoration(s.image_id, spv::DecorationBinding);
  73                         compiler.set_decoration(s.combined_id, spv::DecorationBinding, binding);
  74                 }
  75         }
  76 }
  77 } // namespace spirv_cross_util