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Diffstat (limited to 'src/glsl/tests/varyings_test.cpp')
| -rw-r--r-- | src/glsl/tests/varyings_test.cpp | 246 |
1 files changed, 246 insertions, 0 deletions
diff --git a/src/glsl/tests/varyings_test.cpp b/src/glsl/tests/varyings_test.cpp new file mode 100644 index 00000000000..ab47fcf59d8 --- /dev/null +++ b/src/glsl/tests/varyings_test.cpp @@ -0,0 +1,246 @@ +/* + * Copyright © 2013 Intel Corporation + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + */ +#include <gtest/gtest.h> +#include "main/compiler.h" +#include "main/mtypes.h" +#include "main/macros.h" +#include "ralloc.h" +#include "ir.h" +#include "program/hash_table.h" + +/** + * \file varyings_test.cpp + * + * Test various aspects of linking shader stage inputs and outputs. + */ + +namespace linker { +void +populate_consumer_input_sets(void *mem_ctx, exec_list *ir, + hash_table *consumer_inputs, + hash_table *consumer_interface_inputs); +} + +class link_varyings : public ::testing::Test { +public: + link_varyings(); + + virtual void SetUp(); + virtual void TearDown(); + + char *interface_field_name(const glsl_type *iface, unsigned field = 0) + { + return ralloc_asprintf(mem_ctx, + "%s.%s", + simple_interface->name, + simple_interface->fields.structure[field].name); + } + + void *mem_ctx; + exec_list ir; + hash_table *consumer_inputs; + hash_table *consumer_interface_inputs; + + const glsl_type *simple_interface; +}; + +link_varyings::link_varyings() +{ + static const glsl_struct_field f[] = { + { + glsl_type::vec(4), + "v", + false + } + }; + + this->simple_interface = + glsl_type::get_interface_instance(f, + ARRAY_SIZE(f), + GLSL_INTERFACE_PACKING_STD140, + "simple_interface"); +} + +void +link_varyings::SetUp() +{ + this->mem_ctx = ralloc_context(NULL); + this->ir.make_empty(); + + this->consumer_inputs + = hash_table_ctor(0, hash_table_string_hash, hash_table_string_compare); + + this->consumer_interface_inputs + = hash_table_ctor(0, hash_table_string_hash, hash_table_string_compare); +} + +void +link_varyings::TearDown() +{ + ralloc_free(this->mem_ctx); + this->mem_ctx = NULL; + + hash_table_dtor(this->consumer_inputs); + this->consumer_inputs = NULL; + hash_table_dtor(this->consumer_interface_inputs); + this->consumer_interface_inputs = NULL; +} + +/** + * Hash table callback function that counts the elements in the table + * + * \sa num_elements + */ +static void +ht_count_callback(const void *, void *, void *closure) +{ + unsigned int *counter = (unsigned int *) closure; + + (*counter)++; +} + +/** + * Helper function to count the number of elements in a hash table. + */ +static unsigned +num_elements(hash_table *ht) +{ + unsigned int counter = 0; + + hash_table_call_foreach(ht, ht_count_callback, (void *) &counter); + + return counter; +} + +/** + * Helper function to determine whether a hash table is empty. + */ +static bool +is_empty(hash_table *ht) +{ + return num_elements(ht) == 0; +} + +TEST_F(link_varyings, single_simple_input) +{ + ir_variable *const v = + new(mem_ctx) ir_variable(glsl_type::vec(4), + "a", + ir_var_shader_in); + + + ir.push_tail(v); + + linker::populate_consumer_input_sets(mem_ctx, + &ir, + consumer_inputs, + consumer_interface_inputs); + + EXPECT_EQ((void *) v, hash_table_find(consumer_inputs, "a")); + EXPECT_EQ(1u, num_elements(consumer_inputs)); + EXPECT_TRUE(is_empty(consumer_interface_inputs)); +} + +TEST_F(link_varyings, gl_ClipDistance) +{ + const glsl_type *const array_8_of_float = + glsl_type::get_array_instance(glsl_type::vec(1), 8); + + ir_variable *const clipdistance = + new(mem_ctx) ir_variable(array_8_of_float, + "gl_ClipDistance", + ir_var_shader_in); + + clipdistance->explicit_location = true; + clipdistance->location = VARYING_SLOT_CLIP_DIST0; + clipdistance->explicit_index = 0; + + ir.push_tail(clipdistance); + + linker::populate_consumer_input_sets(mem_ctx, + &ir, + consumer_inputs, + consumer_interface_inputs); + + EXPECT_EQ((void *) clipdistance, + hash_table_find(consumer_inputs, "gl_ClipDistance")); + EXPECT_EQ(1u, num_elements(consumer_inputs)); + EXPECT_TRUE(is_empty(consumer_interface_inputs)); +} + +TEST_F(link_varyings, single_interface_input) +{ + ir_variable *const v = + new(mem_ctx) ir_variable(simple_interface->fields.structure[0].type, + simple_interface->fields.structure[0].name, + ir_var_shader_in); + + v->interface_type = simple_interface; + + ir.push_tail(v); + + linker::populate_consumer_input_sets(mem_ctx, + &ir, + consumer_inputs, + consumer_interface_inputs); + + char *const full_name = interface_field_name(simple_interface); + + EXPECT_EQ((void *) v, hash_table_find(consumer_interface_inputs, full_name)); + EXPECT_EQ(1u, num_elements(consumer_interface_inputs)); + EXPECT_TRUE(is_empty(consumer_inputs)); +} + +TEST_F(link_varyings, one_interface_and_one_simple_input) +{ + ir_variable *const v = + new(mem_ctx) ir_variable(glsl_type::vec(4), + "a", + ir_var_shader_in); + + + ir.push_tail(v); + + ir_variable *const iface = + new(mem_ctx) ir_variable(simple_interface->fields.structure[0].type, + simple_interface->fields.structure[0].name, + ir_var_shader_in); + + iface->interface_type = simple_interface; + + ir.push_tail(iface); + + linker::populate_consumer_input_sets(mem_ctx, + &ir, + consumer_inputs, + consumer_interface_inputs); + + char *const iface_field_name = interface_field_name(simple_interface); + + EXPECT_EQ((void *) iface, hash_table_find(consumer_interface_inputs, + iface_field_name)); + EXPECT_EQ(1u, num_elements(consumer_interface_inputs)); + + EXPECT_EQ((void *) v, hash_table_find(consumer_inputs, "a")); + EXPECT_EQ(1u, num_elements(consumer_inputs)); +} |