1 // Copyright (c) 2017 Google Inc.
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 <sstream>
16 #include <string>
17
18 #include "gmock/gmock.h"
19 #include "test/unit_spirv.h"
20 #include "test/val/val_fixtures.h"
21
22 namespace spvtools {
23 namespace val {
24 namespace {
25
26 using ::testing::HasSubstr;
27 using ::testing::Not;
28
29 using ValidateDerivatives = spvtest::ValidateBase<bool>;
30
GenerateShaderCode(const std::string & body,const std::string & capabilities_and_extensions="",const std::string & execution_model="Fragment")31 std::string GenerateShaderCode(
32 const std::string& body,
33 const std::string& capabilities_and_extensions = "",
34 const std::string& execution_model = "Fragment") {
35 std::stringstream ss;
36 ss << R"(
37 OpCapability Shader
38 OpCapability DerivativeControl
39 )";
40
41 ss << capabilities_and_extensions;
42 ss << "OpMemoryModel Logical GLSL450\n";
43 ss << "OpEntryPoint " << execution_model << " %main \"main\""
44 << " %f32_var_input"
45 << " %f32vec4_var_input"
46 << "\n";
47 if (execution_model == "Fragment") {
48 ss << "OpExecutionMode %main OriginUpperLeft\n";
49 }
50
51 ss << R"(
52 %void = OpTypeVoid
53 %func = OpTypeFunction %void
54 %bool = OpTypeBool
55 %f32 = OpTypeFloat 32
56 %u32 = OpTypeInt 32 0
57 %s32 = OpTypeInt 32 1
58 %f32vec4 = OpTypeVector %f32 4
59
60 %f32_ptr_input = OpTypePointer Input %f32
61 %f32_var_input = OpVariable %f32_ptr_input Input
62
63 %f32vec4_ptr_input = OpTypePointer Input %f32vec4
64 %f32vec4_var_input = OpVariable %f32vec4_ptr_input Input
65 )";
66
67 if (capabilities_and_extensions.find("OpCapability Float16") !=
68 std::string::npos) {
69 ss << "%f16 = OpTypeFloat 16\n"
70 << "%f16vec4 = OpTypeVector %f16 4\n"
71 << "%f16_0 = OpConstantNull %f16\n"
72 << "%f16vec4_0 = OpConstantNull %f16vec4\n";
73 }
74
75 ss << R"(
76 %main = OpFunction %void None %func
77 %main_entry = OpLabel
78 )";
79
80 ss << body;
81
82 ss << R"(
83 OpReturn
84 OpFunctionEnd)";
85
86 return ss.str();
87 }
88
TEST_F(ValidateDerivatives,ScalarSuccess)89 TEST_F(ValidateDerivatives, ScalarSuccess) {
90 const std::string body = R"(
91 %f32_var = OpLoad %f32 %f32_var_input
92 %val1 = OpDPdx %f32 %f32_var
93 %val2 = OpDPdy %f32 %f32_var
94 %val3 = OpFwidth %f32 %f32_var
95 %val4 = OpDPdxFine %f32 %f32_var
96 %val5 = OpDPdyFine %f32 %f32_var
97 %val6 = OpFwidthFine %f32 %f32_var
98 %val7 = OpDPdxCoarse %f32 %f32_var
99 %val8 = OpDPdyCoarse %f32 %f32_var
100 %val9 = OpFwidthCoarse %f32 %f32_var
101 )";
102
103 CompileSuccessfully(GenerateShaderCode(body).c_str());
104 ASSERT_EQ(SPV_SUCCESS, ValidateInstructions());
105 }
106
TEST_F(ValidateDerivatives,VectorSuccess)107 TEST_F(ValidateDerivatives, VectorSuccess) {
108 const std::string body = R"(
109 %f32vec4_var = OpLoad %f32vec4 %f32vec4_var_input
110 %val1 = OpDPdx %f32vec4 %f32vec4_var
111 %val2 = OpDPdy %f32vec4 %f32vec4_var
112 %val3 = OpFwidth %f32vec4 %f32vec4_var
113 %val4 = OpDPdxFine %f32vec4 %f32vec4_var
114 %val5 = OpDPdyFine %f32vec4 %f32vec4_var
115 %val6 = OpFwidthFine %f32vec4 %f32vec4_var
116 %val7 = OpDPdxCoarse %f32vec4 %f32vec4_var
117 %val8 = OpDPdyCoarse %f32vec4 %f32vec4_var
118 %val9 = OpFwidthCoarse %f32vec4 %f32vec4_var
119 )";
120
121 CompileSuccessfully(GenerateShaderCode(body).c_str());
122 ASSERT_EQ(SPV_SUCCESS, ValidateInstructions());
123 }
124
TEST_F(ValidateDerivatives,OpDPdxWrongResultType)125 TEST_F(ValidateDerivatives, OpDPdxWrongResultType) {
126 const std::string body = R"(
127 %f32_var = OpLoad %f32 %f32_var_input
128 %val1 = OpDPdx %u32 %f32vec4
129 )";
130
131 CompileSuccessfully(GenerateShaderCode(body).c_str());
132 ASSERT_EQ(SPV_ERROR_INVALID_ID, ValidateInstructions());
133 EXPECT_THAT(getDiagnosticString(), HasSubstr("Operand '10[%v4float]' cannot "
134 "be a type"));
135 }
136
TEST_F(ValidateDerivatives,OpDPdxWrongPType)137 TEST_F(ValidateDerivatives, OpDPdxWrongPType) {
138 const std::string body = R"(
139 %f32vec4_var = OpLoad %f32vec4 %f32vec4_var_input
140 %val1 = OpDPdx %f32 %f32vec4_var
141 )";
142
143 CompileSuccessfully(GenerateShaderCode(body).c_str());
144 ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
145 EXPECT_THAT(getDiagnosticString(),
146 HasSubstr("Expected P type and Result Type to be the same: "
147 "DPdx"));
148 }
149
TEST_F(ValidateDerivatives,OpDPdxWrongExecutionModel)150 TEST_F(ValidateDerivatives, OpDPdxWrongExecutionModel) {
151 const std::string body = R"(
152 %f32vec4_var = OpLoad %f32vec4 %f32vec4_var_input
153 %val1 = OpDPdx %f32vec4 %f32vec4_var
154 )";
155
156 CompileSuccessfully(GenerateShaderCode(body, "", "Vertex").c_str());
157 ASSERT_EQ(SPV_ERROR_INVALID_ID, ValidateInstructions());
158 EXPECT_THAT(getDiagnosticString(),
159 HasSubstr("Derivative instructions require Fragment or GLCompute "
160 "execution model: DPdx"));
161 }
162
TEST_F(ValidateDerivatives,NoExecutionModeGLCompute)163 TEST_F(ValidateDerivatives, NoExecutionModeGLCompute) {
164 const std::string spirv = R"(
165 OpCapability Shader
166 OpMemoryModel Logical GLSL450
167 OpEntryPoint GLCompute %main "main"
168 %void = OpTypeVoid
169 %float = OpTypeFloat 32
170 %float4 = OpTypeVector %float 4
171 %undef = OpUndef %float4
172 %void_fn = OpTypeFunction %void
173 %main = OpFunction %void None %void_fn
174 %entry = OpLabel
175 %derivative = OpDPdy %float4 %undef
176 OpReturn
177 OpFunctionEnd
178 )";
179
180 CompileSuccessfully(spirv);
181 EXPECT_EQ(SPV_ERROR_INVALID_ID, ValidateInstructions());
182 EXPECT_THAT(getDiagnosticString(),
183 HasSubstr("Derivative instructions require "
184 "DerivativeGroupQuadsNV or DerivativeGroupLinearNV "
185 "execution mode for GLCompute execution model"));
186 }
187
188 using ValidateHalfDerivatives = spvtest::ValidateBase<std::string>;
189
TEST_P(ValidateHalfDerivatives,ScalarFailure)190 TEST_P(ValidateHalfDerivatives, ScalarFailure) {
191 const std::string op = GetParam();
192 const std::string body = "%val = " + op + " %f16 %f16_0\n";
193
194 CompileSuccessfully(
195 GenerateShaderCode(body, "OpCapability Float16\n").c_str());
196 ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
197 EXPECT_THAT(getDiagnosticString(),
198 HasSubstr("Result type component width must be 32 bits"));
199 }
200
TEST_P(ValidateHalfDerivatives,VectorFailure)201 TEST_P(ValidateHalfDerivatives, VectorFailure) {
202 const std::string op = GetParam();
203 const std::string body = "%val = " + op + " %f16vec4 %f16vec4_0\n";
204
205 CompileSuccessfully(
206 GenerateShaderCode(body, "OpCapability Float16\n").c_str());
207 ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
208 EXPECT_THAT(getDiagnosticString(),
209 HasSubstr("Result type component width must be 32 bits"));
210 }
211
212 INSTANTIATE_TEST_SUITE_P(HalfDerivatives, ValidateHalfDerivatives,
213 ::testing::Values("OpDPdx", "OpDPdy", "OpFwidth",
214 "OpDPdxFine", "OpDPdyFine",
215 "OpFwidthFine", "OpDPdxCoarse",
216 "OpDPdyCoarse", "OpFwidthCoarse"));
217
218 } // namespace
219 } // namespace val
220 } // namespace spvtools
221