1 /*
2 * Copyright © 2013 Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
22 */
23 #include <gtest/gtest.h>
24 #include "util/compiler.h"
25 #include "main/mtypes.h"
26 #include "main/macros.h"
27 #include "util/ralloc.h"
28 #include "ir.h"
29 #include "util/hash_table.h"
30
31 /**
32 * \file varyings_test.cpp
33 *
34 * Test various aspects of linking shader stage inputs and outputs.
35 */
36
37 namespace linker {
38 void
39 populate_consumer_input_sets(void *mem_ctx, exec_list *ir,
40 hash_table *consumer_inputs,
41 hash_table *consumer_interface_inputs,
42 ir_variable *consumer_inputs_with_locations[VARYING_SLOT_MAX]);
43
44 ir_variable *
45 get_matching_input(void *mem_ctx,
46 const ir_variable *output_var,
47 hash_table *consumer_inputs,
48 hash_table *consumer_interface_inputs,
49 ir_variable *consumer_inputs_with_locations[VARYING_SLOT_MAX]);
50 }
51
52 class link_varyings : public ::testing::Test {
53 public:
54 virtual void SetUp();
55 virtual void TearDown();
56
interface_field_name(const glsl_type * iface,unsigned field=0)57 char *interface_field_name(const glsl_type *iface, unsigned field = 0)
58 {
59 return ralloc_asprintf(mem_ctx,
60 "%s.%s",
61 iface->name,
62 iface->fields.structure[field].name);
63 }
64
65 void *mem_ctx;
66 exec_list ir;
67 hash_table *consumer_inputs;
68 hash_table *consumer_interface_inputs;
69
70 const glsl_type *simple_interface;
71 ir_variable *junk[VARYING_SLOT_TESS_MAX];
72 };
73
74 void
SetUp()75 link_varyings::SetUp()
76 {
77 glsl_type_singleton_init_or_ref();
78
79 this->mem_ctx = ralloc_context(NULL);
80 this->ir.make_empty();
81
82 this->consumer_inputs =
83 _mesa_hash_table_create(NULL, _mesa_hash_string,
84 _mesa_key_string_equal);
85
86 this->consumer_interface_inputs =
87 _mesa_hash_table_create(NULL, _mesa_hash_string,
88 _mesa_key_string_equal);
89
90 /* Needs to happen after glsl type initialization */
91 static const glsl_struct_field f[] = {
92 glsl_struct_field(glsl_type::vec(4), "v")
93 };
94
95 this->simple_interface =
96 glsl_type::get_interface_instance(f,
97 ARRAY_SIZE(f),
98 GLSL_INTERFACE_PACKING_STD140,
99 false,
100 "simple_interface");
101 }
102
103 void
TearDown()104 link_varyings::TearDown()
105 {
106 ralloc_free(this->mem_ctx);
107 this->mem_ctx = NULL;
108
109 _mesa_hash_table_destroy(this->consumer_inputs, NULL);
110 this->consumer_inputs = NULL;
111 _mesa_hash_table_destroy(this->consumer_interface_inputs, NULL);
112 this->consumer_interface_inputs = NULL;
113
114 glsl_type_singleton_decref();
115 }
116
TEST_F(link_varyings,single_simple_input)117 TEST_F(link_varyings, single_simple_input)
118 {
119 ir_variable *const v =
120 new(mem_ctx) ir_variable(glsl_type::vec(4),
121 "a",
122 ir_var_shader_in);
123
124
125 ir.push_tail(v);
126
127 linker::populate_consumer_input_sets(mem_ctx,
128 &ir,
129 consumer_inputs,
130 consumer_interface_inputs,
131 junk);
132
133 hash_entry *entry = _mesa_hash_table_search(consumer_inputs, "a");
134 EXPECT_EQ((void *) v, entry->data);
135 EXPECT_EQ(1u, consumer_inputs->entries);
136 EXPECT_TRUE(consumer_interface_inputs->entries == 0);
137 }
138
TEST_F(link_varyings,gl_ClipDistance)139 TEST_F(link_varyings, gl_ClipDistance)
140 {
141 const glsl_type *const array_8_of_float =
142 glsl_type::get_array_instance(glsl_type::vec(1), 8);
143
144 ir_variable *const clipdistance =
145 new(mem_ctx) ir_variable(array_8_of_float,
146 "gl_ClipDistance",
147 ir_var_shader_in);
148
149 clipdistance->data.explicit_location = true;
150 clipdistance->data.location = VARYING_SLOT_CLIP_DIST0;
151 clipdistance->data.explicit_index = 0;
152
153 ir.push_tail(clipdistance);
154
155 linker::populate_consumer_input_sets(mem_ctx,
156 &ir,
157 consumer_inputs,
158 consumer_interface_inputs,
159 junk);
160
161 EXPECT_EQ(clipdistance, junk[VARYING_SLOT_CLIP_DIST0]);
162 EXPECT_TRUE(consumer_inputs->entries == 0);
163 EXPECT_TRUE(consumer_interface_inputs->entries == 0);
164 }
165
TEST_F(link_varyings,gl_CullDistance)166 TEST_F(link_varyings, gl_CullDistance)
167 {
168 const glsl_type *const array_8_of_float =
169 glsl_type::get_array_instance(glsl_type::vec(1), 8);
170
171 ir_variable *const culldistance =
172 new(mem_ctx) ir_variable(array_8_of_float,
173 "gl_CullDistance",
174 ir_var_shader_in);
175
176 culldistance->data.explicit_location = true;
177 culldistance->data.location = VARYING_SLOT_CULL_DIST0;
178 culldistance->data.explicit_index = 0;
179
180 ir.push_tail(culldistance);
181
182 linker::populate_consumer_input_sets(mem_ctx,
183 &ir,
184 consumer_inputs,
185 consumer_interface_inputs,
186 junk);
187
188 EXPECT_EQ(culldistance, junk[VARYING_SLOT_CULL_DIST0]);
189 EXPECT_TRUE(consumer_inputs->entries == 0);
190 EXPECT_TRUE(consumer_interface_inputs->entries == 0);
191 }
192
TEST_F(link_varyings,single_interface_input)193 TEST_F(link_varyings, single_interface_input)
194 {
195 ir_variable *const v =
196 new(mem_ctx) ir_variable(simple_interface->fields.structure[0].type,
197 simple_interface->fields.structure[0].name,
198 ir_var_shader_in);
199
200 v->init_interface_type(simple_interface);
201
202 ir.push_tail(v);
203
204 linker::populate_consumer_input_sets(mem_ctx,
205 &ir,
206 consumer_inputs,
207 consumer_interface_inputs,
208 junk);
209 char *const full_name = interface_field_name(simple_interface);
210
211 hash_entry *entry = _mesa_hash_table_search(consumer_interface_inputs,
212 full_name);
213 EXPECT_EQ((void *) v, entry->data);
214 EXPECT_EQ(1u, consumer_interface_inputs->entries);
215 EXPECT_TRUE(consumer_inputs->entries == 0);
216 }
217
TEST_F(link_varyings,one_interface_and_one_simple_input)218 TEST_F(link_varyings, one_interface_and_one_simple_input)
219 {
220 ir_variable *const v =
221 new(mem_ctx) ir_variable(glsl_type::vec(4),
222 "a",
223 ir_var_shader_in);
224
225
226 ir.push_tail(v);
227
228 ir_variable *const iface =
229 new(mem_ctx) ir_variable(simple_interface->fields.structure[0].type,
230 simple_interface->fields.structure[0].name,
231 ir_var_shader_in);
232
233 iface->init_interface_type(simple_interface);
234
235 ir.push_tail(iface);
236
237 linker::populate_consumer_input_sets(mem_ctx,
238 &ir,
239 consumer_inputs,
240 consumer_interface_inputs,
241 junk);
242
243 char *const iface_field_name = interface_field_name(simple_interface);
244
245 hash_entry *entry = _mesa_hash_table_search(consumer_interface_inputs,
246 iface_field_name);
247 EXPECT_EQ((void *) iface, entry->data);
248 EXPECT_EQ(1u, consumer_interface_inputs->entries);
249
250 entry = _mesa_hash_table_search(consumer_inputs, "a");
251 EXPECT_EQ((void *) v, entry->data);
252 EXPECT_EQ(1u, consumer_inputs->entries);
253 }
254
TEST_F(link_varyings,interface_field_doesnt_match_noninterface)255 TEST_F(link_varyings, interface_field_doesnt_match_noninterface)
256 {
257 char *const iface_field_name = interface_field_name(simple_interface);
258
259 /* The input shader has a single input variable name "a.v"
260 */
261 ir_variable *const in_v =
262 new(mem_ctx) ir_variable(glsl_type::vec(4),
263 iface_field_name,
264 ir_var_shader_in);
265
266 ir.push_tail(in_v);
267
268 linker::populate_consumer_input_sets(mem_ctx,
269 &ir,
270 consumer_inputs,
271 consumer_interface_inputs,
272 junk);
273
274 /* Create an output variable, "v", that is part of an interface block named
275 * "a". They should not match.
276 */
277 ir_variable *const out_v =
278 new(mem_ctx) ir_variable(simple_interface->fields.structure[0].type,
279 simple_interface->fields.structure[0].name,
280 ir_var_shader_in);
281
282 out_v->init_interface_type(simple_interface);
283
284 ir_variable *const match =
285 linker::get_matching_input(mem_ctx,
286 out_v,
287 consumer_inputs,
288 consumer_interface_inputs,
289 junk);
290
291 EXPECT_EQ(NULL, match);
292 }
293
TEST_F(link_varyings,interface_field_doesnt_match_noninterface_vice_versa)294 TEST_F(link_varyings, interface_field_doesnt_match_noninterface_vice_versa)
295 {
296 char *const iface_field_name = interface_field_name(simple_interface);
297
298 /* In input shader has a single variable, "v", that is part of an interface
299 * block named "a".
300 */
301 ir_variable *const in_v =
302 new(mem_ctx) ir_variable(simple_interface->fields.structure[0].type,
303 simple_interface->fields.structure[0].name,
304 ir_var_shader_in);
305
306 in_v->init_interface_type(simple_interface);
307
308 ir.push_tail(in_v);
309
310 linker::populate_consumer_input_sets(mem_ctx,
311 &ir,
312 consumer_inputs,
313 consumer_interface_inputs,
314 junk);
315
316 /* Create an output variable "a.v". They should not match.
317 */
318 ir_variable *const out_v =
319 new(mem_ctx) ir_variable(glsl_type::vec(4),
320 iface_field_name,
321 ir_var_shader_out);
322
323 ir_variable *const match =
324 linker::get_matching_input(mem_ctx,
325 out_v,
326 consumer_inputs,
327 consumer_interface_inputs,
328 junk);
329
330 EXPECT_EQ(NULL, match);
331 }
332