1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
|
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <GLES2/gl2.h>
#include "gpu/command_buffer/service/shader_translator.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace gpu {
namespace gles2 {
class ShaderTranslatorTest : public testing::Test {
public:
ShaderTranslatorTest() {
}
~ShaderTranslatorTest() override {}
protected:
void SetUp() override {
ShBuiltInResources resources;
ShInitBuiltInResources(&resources);
resources.MaxExpressionComplexity = 32;
resources.MaxCallStackDepth = 32;
vertex_translator_ = new ShaderTranslator();
fragment_translator_ = new ShaderTranslator();
ASSERT_TRUE(vertex_translator_->Init(
GL_VERTEX_SHADER, SH_GLES2_SPEC, &resources,
ShaderTranslatorInterface::kGlsl,
SH_EMULATE_BUILT_IN_FUNCTIONS));
ASSERT_TRUE(fragment_translator_->Init(
GL_FRAGMENT_SHADER, SH_GLES2_SPEC, &resources,
ShaderTranslatorInterface::kGlsl,
static_cast<ShCompileOptions>(0)));
}
void TearDown() override {
vertex_translator_ = NULL;
fragment_translator_ = NULL;
}
scoped_refptr<ShaderTranslator> vertex_translator_;
scoped_refptr<ShaderTranslator> fragment_translator_;
};
TEST_F(ShaderTranslatorTest, ValidVertexShader) {
const char* shader =
"void main() {\n"
" gl_Position = vec4(1.0);\n"
"}";
// A valid shader should be successfully translated.
std::string info_log, translated_source;
AttributeMap attrib_map;
UniformMap uniform_map;
VaryingMap varying_map;
NameMap name_map;
EXPECT_TRUE(vertex_translator_->Translate(shader,
&info_log,
&translated_source,
&attrib_map,
&uniform_map,
&varying_map,
&name_map));
// Info log must be NULL.
EXPECT_TRUE(info_log.empty());
// Translated shader must be valid and non-empty.
ASSERT_FALSE(translated_source.empty());
// There should be no attributes, uniforms, and only one built-in
// varying: gl_Position.
EXPECT_TRUE(attrib_map.empty());
EXPECT_TRUE(uniform_map.empty());
EXPECT_EQ(1u, varying_map.size());
// There should be no name mapping.
EXPECT_TRUE(name_map.empty());
}
TEST_F(ShaderTranslatorTest, InvalidVertexShader) {
const char* bad_shader = "foo-bar";
const char* good_shader =
"void main() {\n"
" gl_Position = vec4(1.0);\n"
"}";
// An invalid shader should fail.
std::string info_log, translated_source;
AttributeMap attrib_map;
UniformMap uniform_map;
VaryingMap varying_map;
NameMap name_map;
EXPECT_FALSE(vertex_translator_->Translate(bad_shader,
&info_log,
&translated_source,
&attrib_map,
&uniform_map,
&varying_map,
&name_map));
// Info log must be valid and non-empty.
ASSERT_FALSE(info_log.empty());
// Translated shader must be NULL.
EXPECT_TRUE(translated_source.empty());
// There should be no attributes, uniforms, varyings, or name mapping.
EXPECT_TRUE(attrib_map.empty());
EXPECT_TRUE(uniform_map.empty());
EXPECT_TRUE(varying_map.empty());
EXPECT_TRUE(name_map.empty());
// Try a good shader after bad.
info_log.clear();
EXPECT_TRUE(vertex_translator_->Translate(good_shader,
&info_log,
&translated_source,
&attrib_map,
&uniform_map,
&varying_map,
&name_map));
EXPECT_TRUE(info_log.empty());
EXPECT_FALSE(translated_source.empty());
}
TEST_F(ShaderTranslatorTest, ValidFragmentShader) {
const char* shader =
"void main() {\n"
" gl_FragColor = vec4(1.0);\n"
"}";
// A valid shader should be successfully translated.
std::string info_log, translated_source;
AttributeMap attrib_map;
UniformMap uniform_map;
VaryingMap varying_map;
NameMap name_map;
EXPECT_TRUE(fragment_translator_->Translate(shader,
&info_log,
&translated_source,
&attrib_map,
&uniform_map,
&varying_map,
&name_map));
// Info log must be NULL.
EXPECT_TRUE(info_log.empty());
// Translated shader must be valid and non-empty.
ASSERT_FALSE(translated_source.empty());
// There should be no attributes, uniforms, varyings, or name mapping.
EXPECT_TRUE(attrib_map.empty());
EXPECT_TRUE(uniform_map.empty());
EXPECT_TRUE(varying_map.empty());
EXPECT_TRUE(name_map.empty());
}
TEST_F(ShaderTranslatorTest, InvalidFragmentShader) {
const char* shader = "foo-bar";
std::string info_log, translated_source;
AttributeMap attrib_map;
UniformMap uniform_map;
VaryingMap varying_map;
NameMap name_map;
// An invalid shader should fail.
EXPECT_FALSE(fragment_translator_->Translate(shader,
&info_log,
&translated_source,
&attrib_map,
&uniform_map,
&varying_map,
&name_map));
// Info log must be valid and non-empty.
EXPECT_FALSE(info_log.empty());
// Translated shader must be NULL.
EXPECT_TRUE(translated_source.empty());
// There should be no attributes or uniforms.
EXPECT_TRUE(attrib_map.empty());
EXPECT_TRUE(uniform_map.empty());
EXPECT_TRUE(varying_map.empty());
EXPECT_TRUE(name_map.empty());
}
TEST_F(ShaderTranslatorTest, GetAttributes) {
const char* shader =
"attribute vec4 vPosition;\n"
"void main() {\n"
" gl_Position = vPosition;\n"
"}";
std::string info_log, translated_source;
AttributeMap attrib_map;
UniformMap uniform_map;
VaryingMap varying_map;
NameMap name_map;
EXPECT_TRUE(vertex_translator_->Translate(shader,
&info_log,
&translated_source,
&attrib_map,
&uniform_map,
&varying_map,
&name_map));
// Info log must be NULL.
EXPECT_TRUE(info_log.empty());
// Translated shader must be valid and non-empty.
EXPECT_FALSE(translated_source.empty());
// There should be no uniforms.
EXPECT_TRUE(uniform_map.empty());
// There should be one attribute with following characteristics:
// name:vPosition type:GL_FLOAT_VEC4 size:0.
EXPECT_EQ(1u, attrib_map.size());
AttributeMap::const_iterator iter = attrib_map.find("vPosition");
EXPECT_TRUE(iter != attrib_map.end());
EXPECT_EQ(static_cast<GLenum>(GL_FLOAT_VEC4), iter->second.type);
EXPECT_EQ(0u, iter->second.arraySize);
EXPECT_EQ("vPosition", iter->second.name);
}
TEST_F(ShaderTranslatorTest, GetUniforms) {
const char* shader =
"precision mediump float;\n"
"struct Foo {\n"
" vec4 color[1];\n"
"};\n"
"struct Bar {\n"
" Foo foo;\n"
"};\n"
"uniform Bar bar[2];\n"
"void main() {\n"
" gl_FragColor = bar[0].foo.color[0] + bar[1].foo.color[0];\n"
"}";
std::string info_log, translated_source;
AttributeMap attrib_map;
UniformMap uniform_map;
VaryingMap varying_map;
NameMap name_map;
EXPECT_TRUE(fragment_translator_->Translate(shader,
&info_log,
&translated_source,
&attrib_map,
&uniform_map,
&varying_map,
&name_map));
// Info log must be NULL.
EXPECT_TRUE(info_log.empty());
// Translated shader must be valid and non-empty.
EXPECT_FALSE(translated_source.empty());
// There should be no attributes.
EXPECT_TRUE(attrib_map.empty());
// There should be two uniforms with following characteristics:
// 1. name:bar[0].foo.color[0] type:GL_FLOAT_VEC4 size:1
// 2. name:bar[1].foo.color[0] type:GL_FLOAT_VEC4 size:1
// However, there will be only one entry "bar" in the map.
EXPECT_EQ(1u, uniform_map.size());
UniformMap::const_iterator iter = uniform_map.find("bar");
EXPECT_TRUE(iter != uniform_map.end());
// First uniform.
const sh::ShaderVariable* info;
std::string original_name;
EXPECT_TRUE(iter->second.findInfoByMappedName(
"bar[0].foo.color[0]", &info, &original_name));
EXPECT_EQ(static_cast<GLenum>(GL_FLOAT_VEC4), info->type);
EXPECT_EQ(1u, info->arraySize);
EXPECT_STREQ("color", info->name.c_str());
EXPECT_STREQ("bar[0].foo.color[0]", original_name.c_str());
// Second uniform.
EXPECT_TRUE(iter->second.findInfoByMappedName(
"bar[1].foo.color[0]", &info, &original_name));
EXPECT_EQ(static_cast<GLenum>(GL_FLOAT_VEC4), info->type);
EXPECT_EQ(1u, info->arraySize);
EXPECT_STREQ("color", info->name.c_str());
EXPECT_STREQ("bar[1].foo.color[0]", original_name.c_str());
}
#if defined(OS_MACOSX)
TEST_F(ShaderTranslatorTest, BuiltInFunctionEmulation) {
// This test might become invalid in the future when ANGLE Translator is no
// longer emulate dot(float, float) in Mac, or the emulated function name is
// no longer webgl_dot_emu.
const char* shader =
"void main() {\n"
" gl_Position = vec4(dot(1.0, 1.0), 1.0, 1.0, 1.0);\n"
"}";
std::string info_log, translated_source;
AttributeMap attrib_map;
UniformMap uniform_map;
VaryingMap varying_map;
NameMap name_map;
EXPECT_TRUE(vertex_translator_->Translate(shader,
&info_log,
&translated_source,
&attrib_map,
&uniform_map,
&varying_map,
&name_map));
// Info log must be NULL.
EXPECT_TRUE(info_log.empty());
// Translated shader must be valid and non-empty.
ASSERT_FALSE(translated_source.empty());
EXPECT_TRUE(strstr(translated_source.c_str(),
"webgl_dot_emu") != NULL);
}
#endif
TEST_F(ShaderTranslatorTest, OptionsString) {
scoped_refptr<ShaderTranslator> translator_1 = new ShaderTranslator();
scoped_refptr<ShaderTranslator> translator_2 = new ShaderTranslator();
scoped_refptr<ShaderTranslator> translator_3 = new ShaderTranslator();
ShBuiltInResources resources;
ShInitBuiltInResources(&resources);
ASSERT_TRUE(translator_1->Init(
GL_VERTEX_SHADER, SH_GLES2_SPEC, &resources,
ShaderTranslatorInterface::kGlsl,
SH_EMULATE_BUILT_IN_FUNCTIONS));
ASSERT_TRUE(translator_2->Init(
GL_FRAGMENT_SHADER, SH_GLES2_SPEC, &resources,
ShaderTranslatorInterface::kGlsl,
static_cast<ShCompileOptions>(0)));
resources.EXT_draw_buffers = 1;
ASSERT_TRUE(translator_3->Init(
GL_VERTEX_SHADER, SH_GLES2_SPEC, &resources,
ShaderTranslatorInterface::kGlsl,
SH_EMULATE_BUILT_IN_FUNCTIONS));
std::string options_1(
translator_1->GetStringForOptionsThatWouldAffectCompilation());
std::string options_2(
translator_1->GetStringForOptionsThatWouldAffectCompilation());
std::string options_3(
translator_2->GetStringForOptionsThatWouldAffectCompilation());
std::string options_4(
translator_3->GetStringForOptionsThatWouldAffectCompilation());
EXPECT_EQ(options_1, options_2);
EXPECT_NE(options_1, options_3);
EXPECT_NE(options_1, options_4);
EXPECT_NE(options_3, options_4);
}
} // namespace gles2
} // namespace gpu
|
