1 // Copyright 2021 The Tint Authors.
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14
15 #include "src/val/val.h"
16
17 #include "src/utils/io/command.h"
18 #include "src/utils/io/tmpfile.h"
19
20 #ifdef _WIN32
21 #include <Windows.h>
22 #include <d3dcommon.h>
23 #include <d3dcompiler.h>
24
25 #include <wrl.h>
26 using Microsoft::WRL::ComPtr;
27 #endif // _WIN32
28
29 namespace tint {
30 namespace val {
31
HlslUsingDXC(const std::string & dxc_path,const std::string & source,const EntryPointList & entry_points)32 Result HlslUsingDXC(const std::string& dxc_path,
33 const std::string& source,
34 const EntryPointList& entry_points) {
35 Result result;
36
37 auto dxc = utils::Command(dxc_path);
38 if (!dxc.Found()) {
39 result.output = "DXC not found at '" + std::string(dxc_path) + "'";
40 result.failed = true;
41 return result;
42 }
43
44 utils::TmpFile file;
45 file << source;
46
47 for (auto ep : entry_points) {
48 const char* profile = "";
49
50 switch (ep.second) {
51 case ast::PipelineStage::kNone:
52 result.output = "Invalid PipelineStage";
53 result.failed = true;
54 return result;
55 case ast::PipelineStage::kVertex:
56 profile = "-T vs_6_0";
57 break;
58 case ast::PipelineStage::kFragment:
59 profile = "-T ps_6_0";
60 break;
61 case ast::PipelineStage::kCompute:
62 profile = "-T cs_6_0";
63 break;
64 }
65
66 // Match Dawn's compile flags
67 // See dawn\src\dawn_native\d3d12\RenderPipelineD3D12.cpp
68 // and dawn_native\d3d12\ShaderModuleD3D12.cpp (GetDXCArguments)
69 const char* compileFlags =
70 "/Zpr " // D3DCOMPILE_PACK_MATRIX_ROW_MAJOR
71 "/Gis"; // D3DCOMPILE_IEEE_STRICTNESS
72
73 auto res = dxc(profile, "-E " + ep.first, compileFlags, file.Path());
74 if (!res.out.empty()) {
75 if (!result.output.empty()) {
76 result.output += "\n";
77 }
78 result.output += res.out;
79 }
80 if (!res.err.empty()) {
81 if (!result.output.empty()) {
82 result.output += "\n";
83 }
84 result.output += res.err;
85 }
86 result.failed = (res.error_code != 0);
87 }
88
89 if (entry_points.empty()) {
90 result.output = "No entrypoint found";
91 result.failed = true;
92 return result;
93 }
94
95 return result;
96 }
97
98 #ifdef _WIN32
HlslUsingFXC(const std::string & source,const EntryPointList & entry_points)99 Result HlslUsingFXC(const std::string& source,
100 const EntryPointList& entry_points) {
101 Result result;
102
103 // This library leaks if an error happens in this function, but it is ok
104 // because it is loaded at most once, and the executables using HlslUsingFXC
105 // are short-lived.
106 HMODULE fxcLib = LoadLibraryA("d3dcompiler_47.dll");
107 if (fxcLib == nullptr) {
108 result.output = "Couldn't load FXC";
109 result.failed = true;
110 return result;
111 }
112
113 pD3DCompile d3dCompile =
114 reinterpret_cast<pD3DCompile>(GetProcAddress(fxcLib, "D3DCompile"));
115 if (d3dCompile == nullptr) {
116 result.output = "Couldn't load D3DCompile from FXC";
117 result.failed = true;
118 return result;
119 }
120
121 for (auto ep : entry_points) {
122 const char* profile = "";
123 switch (ep.second) {
124 case ast::PipelineStage::kNone:
125 result.output = "Invalid PipelineStage";
126 result.failed = true;
127 return result;
128 case ast::PipelineStage::kVertex:
129 profile = "vs_5_1";
130 break;
131 case ast::PipelineStage::kFragment:
132 profile = "ps_5_1";
133 break;
134 case ast::PipelineStage::kCompute:
135 profile = "cs_5_1";
136 break;
137 }
138
139 // Match Dawn's compile flags
140 // See dawn\src\dawn_native\d3d12\RenderPipelineD3D12.cpp
141 UINT compileFlags = D3DCOMPILE_OPTIMIZATION_LEVEL0 |
142 D3DCOMPILE_PACK_MATRIX_ROW_MAJOR |
143 D3DCOMPILE_IEEE_STRICTNESS;
144
145 ComPtr<ID3DBlob> compiledShader;
146 ComPtr<ID3DBlob> errors;
147 HRESULT cr = d3dCompile(source.c_str(), // pSrcData
148 source.length(), // SrcDataSize
149 nullptr, // pSourceName
150 nullptr, // pDefines
151 nullptr, // pInclude
152 ep.first.c_str(), // pEntrypoint
153 profile, // pTarget
154 compileFlags, // Flags1
155 0, // Flags2
156 &compiledShader, // ppCode
157 &errors); // ppErrorMsgs
158 if (FAILED(cr)) {
159 result.output = static_cast<char*>(errors->GetBufferPointer());
160 result.failed = true;
161 return result;
162 }
163 }
164
165 FreeLibrary(fxcLib);
166
167 if (entry_points.empty()) {
168 result.output = "No entrypoint found";
169 result.failed = true;
170 return result;
171 }
172
173 return result;
174 }
175 #endif // _WIN32
176
177 } // namespace val
178 } // namespace tint
179