1 /**
2 This code is based on the glslang_c_interface implementation by Viktor Latypov
3 **/
4
5 /**
6 BSD 2-Clause License
7
8 Copyright (c) 2019, Viktor Latypov
9 All rights reserved.
10
11 Redistribution and use in source and binary forms, with or without
12 modification, are permitted provided that the following conditions are met:
13
14 1. Redistributions of source code must retain the above copyright notice, this
15 list of conditions and the following disclaimer.
16
17 2. Redistributions in binary form must reproduce the above copyright notice,
18 this list of conditions and the following disclaimer in the documentation
19 and/or other materials provided with the distribution.
20
21 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
22 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
24 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
25 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
27 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
28 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
29 OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
30 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 **/
32
33 #include "glslang/Include/glslang_c_interface.h"
34
35 #include "SPIRV/GlslangToSpv.h"
36 #include "SPIRV/Logger.h"
37 #include "SPIRV/SpvTools.h"
38
39 static_assert(sizeof(glslang_spv_options_t) == sizeof(glslang::SpvOptions), "");
40
41 typedef struct glslang_program_s {
42 glslang::TProgram* program;
43 std::vector<unsigned int> spirv;
44 std::string loggerMessages;
45 } glslang_program_t;
46
c_shader_stage(glslang_stage_t stage)47 static EShLanguage c_shader_stage(glslang_stage_t stage)
48 {
49 switch (stage) {
50 case GLSLANG_STAGE_VERTEX:
51 return EShLangVertex;
52 case GLSLANG_STAGE_TESSCONTROL:
53 return EShLangTessControl;
54 case GLSLANG_STAGE_TESSEVALUATION:
55 return EShLangTessEvaluation;
56 case GLSLANG_STAGE_GEOMETRY:
57 return EShLangGeometry;
58 case GLSLANG_STAGE_FRAGMENT:
59 return EShLangFragment;
60 case GLSLANG_STAGE_COMPUTE:
61 return EShLangCompute;
62 case GLSLANG_STAGE_RAYGEN:
63 return EShLangRayGen;
64 case GLSLANG_STAGE_INTERSECT:
65 return EShLangIntersect;
66 case GLSLANG_STAGE_ANYHIT:
67 return EShLangAnyHit;
68 case GLSLANG_STAGE_CLOSESTHIT:
69 return EShLangClosestHit;
70 case GLSLANG_STAGE_MISS:
71 return EShLangMiss;
72 case GLSLANG_STAGE_CALLABLE:
73 return EShLangCallable;
74 case GLSLANG_STAGE_TASK:
75 return EShLangTask;
76 case GLSLANG_STAGE_MESH:
77 return EShLangMesh;
78 default:
79 break;
80 }
81 return EShLangCount;
82 }
83
glslang_program_SPIRV_generate(glslang_program_t * program,glslang_stage_t stage)84 GLSLANG_EXPORT void glslang_program_SPIRV_generate(glslang_program_t* program, glslang_stage_t stage)
85 {
86 glslang_spv_options_t spv_options {};
87 spv_options.disable_optimizer = true;
88 spv_options.validate = true;
89
90 glslang_program_SPIRV_generate_with_options(program, stage, &spv_options);
91 }
92
glslang_program_SPIRV_generate_with_options(glslang_program_t * program,glslang_stage_t stage,glslang_spv_options_t * spv_options)93 GLSLANG_EXPORT void glslang_program_SPIRV_generate_with_options(glslang_program_t* program, glslang_stage_t stage, glslang_spv_options_t* spv_options) {
94 spv::SpvBuildLogger logger;
95
96 const glslang::TIntermediate* intermediate = program->program->getIntermediate(c_shader_stage(stage));
97
98 glslang::GlslangToSpv(*intermediate, program->spirv, &logger, reinterpret_cast<glslang::SpvOptions*>(spv_options));
99
100 program->loggerMessages = logger.getAllMessages();
101 }
102
glslang_program_SPIRV_get_size(glslang_program_t * program)103 GLSLANG_EXPORT size_t glslang_program_SPIRV_get_size(glslang_program_t* program) { return program->spirv.size(); }
104
glslang_program_SPIRV_get(glslang_program_t * program,unsigned int * out)105 GLSLANG_EXPORT void glslang_program_SPIRV_get(glslang_program_t* program, unsigned int* out)
106 {
107 memcpy(out, program->spirv.data(), program->spirv.size() * sizeof(unsigned int));
108 }
109
glslang_program_SPIRV_get_ptr(glslang_program_t * program)110 GLSLANG_EXPORT unsigned int* glslang_program_SPIRV_get_ptr(glslang_program_t* program)
111 {
112 return program->spirv.data();
113 }
114
glslang_program_SPIRV_get_messages(glslang_program_t * program)115 GLSLANG_EXPORT const char* glslang_program_SPIRV_get_messages(glslang_program_t* program)
116 {
117 return program->loggerMessages.empty() ? nullptr : program->loggerMessages.c_str();
118 }
119