Chris Forbes | 47567b7 | 2017-06-09 12:09:45 -0700 | [diff] [blame] | 1 | /* Copyright (c) 2015-2017 The Khronos Group Inc. |
| 2 | * Copyright (c) 2015-2017 Valve Corporation |
| 3 | * Copyright (c) 2015-2017 LunarG, Inc. |
| 4 | * Copyright (C) 2015-2017 Google Inc. |
| 5 | * |
| 6 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 7 | * you may not use this file except in compliance with the License. |
| 8 | * You may obtain a copy of the License at |
| 9 | * |
| 10 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 11 | * |
| 12 | * Unless required by applicable law or agreed to in writing, software |
| 13 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 14 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 15 | * See the License for the specific language governing permissions and |
| 16 | * limitations under the License. |
| 17 | * |
| 18 | * Author: Chris Forbes <chrisf@ijw.co.nz> |
| 19 | */ |
| 20 | #ifndef VULKAN_SHADER_VALIDATION_H |
| 21 | #define VULKAN_SHADER_VALIDATION_H |
| 22 | |
| 23 | // A forward iterator over spirv instructions. Provides easy access to len, opcode, and content words |
| 24 | // without the caller needing to care too much about the physical SPIRV module layout. |
| 25 | struct spirv_inst_iter { |
| 26 | std::vector<uint32_t>::const_iterator zero; |
| 27 | std::vector<uint32_t>::const_iterator it; |
| 28 | |
| 29 | uint32_t len() { |
| 30 | auto result = *it >> 16; |
| 31 | assert(result > 0); |
| 32 | return result; |
| 33 | } |
| 34 | |
| 35 | uint32_t opcode() { return *it & 0x0ffffu; } |
| 36 | |
| 37 | uint32_t const &word(unsigned n) { |
| 38 | assert(n < len()); |
| 39 | return it[n]; |
| 40 | } |
| 41 | |
| 42 | uint32_t offset() { return (uint32_t)(it - zero); } |
| 43 | |
| 44 | spirv_inst_iter() {} |
| 45 | |
| 46 | spirv_inst_iter(std::vector<uint32_t>::const_iterator zero, std::vector<uint32_t>::const_iterator it) : zero(zero), it(it) {} |
| 47 | |
| 48 | bool operator==(spirv_inst_iter const &other) { return it == other.it; } |
| 49 | |
| 50 | bool operator!=(spirv_inst_iter const &other) { return it != other.it; } |
| 51 | |
| 52 | spirv_inst_iter operator++(int) { // x++ |
| 53 | spirv_inst_iter ii = *this; |
| 54 | it += len(); |
| 55 | return ii; |
| 56 | } |
| 57 | |
| 58 | spirv_inst_iter operator++() { // ++x; |
| 59 | it += len(); |
| 60 | return *this; |
| 61 | } |
| 62 | |
| 63 | // The iterator and the value are the same thing. |
| 64 | spirv_inst_iter &operator*() { return *this; } |
| 65 | spirv_inst_iter const &operator*() const { return *this; } |
| 66 | }; |
| 67 | |
| 68 | struct shader_module { |
| 69 | // The spirv image itself |
| 70 | std::vector<uint32_t> words; |
| 71 | // A mapping of <id> to the first word of its def. this is useful because walking type |
| 72 | // trees, constant expressions, etc requires jumping all over the instruction stream. |
| 73 | std::unordered_map<unsigned, unsigned> def_index; |
| 74 | bool has_valid_spirv; |
| 75 | |
| 76 | shader_module(VkShaderModuleCreateInfo const *pCreateInfo) |
| 77 | : words((uint32_t *)pCreateInfo->pCode, (uint32_t *)pCreateInfo->pCode + pCreateInfo->codeSize / sizeof(uint32_t)), |
| 78 | def_index(), |
| 79 | has_valid_spirv(true) { |
| 80 | build_def_index(); |
| 81 | } |
| 82 | |
| 83 | shader_module() : has_valid_spirv(false) {} |
| 84 | |
| 85 | // Expose begin() / end() to enable range-based for |
| 86 | spirv_inst_iter begin() const { return spirv_inst_iter(words.begin(), words.begin() + 5); } // First insn |
| 87 | spirv_inst_iter end() const { return spirv_inst_iter(words.begin(), words.end()); } // Just past last insn |
| 88 | // Given an offset into the module, produce an iterator there. |
| 89 | spirv_inst_iter at(unsigned offset) const { return spirv_inst_iter(words.begin(), words.begin() + offset); } |
| 90 | |
| 91 | // Gets an iterator to the definition of an id |
| 92 | spirv_inst_iter get_def(unsigned id) const { |
| 93 | auto it = def_index.find(id); |
| 94 | if (it == def_index.end()) { |
| 95 | return end(); |
| 96 | } |
| 97 | return at(it->second); |
| 98 | } |
| 99 | |
| 100 | void build_def_index(); |
| 101 | }; |
| 102 | |
| 103 | bool validate_and_capture_pipeline_shader_state(layer_data *dev_data, PIPELINE_STATE *pPipeline); |
| 104 | bool validate_compute_pipeline(layer_data *dev_data, PIPELINE_STATE *pPipeline); |
| 105 | typedef std::pair<unsigned, unsigned> descriptor_slot_t; |
Chris Forbes | 4ae55b3 | 2017-06-09 14:42:56 -0700 | [diff] [blame^] | 106 | bool PreCallValidateCreateShaderModule(layer_data *dev_data, VkShaderModuleCreateInfo const *pCreateInfo, bool *spirv_valid); |
Chris Forbes | 47567b7 | 2017-06-09 12:09:45 -0700 | [diff] [blame] | 107 | |
| 108 | #endif //VULKAN_SHADER_VALIDATION_H |