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// Copyright 2020 The Dawn & Tint Authors
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this
// list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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#include "src/tint/lang/spirv/reader/ast_parser/parse.h"
#include "gmock/gmock.h"
#include "gtest/gtest.h"
#include "src/tint/lang/spirv/reader/ast_parser/spirv_tools_helpers_test.h"
namespace tint::spirv::reader::ast_parser {
namespace {
using ParserTest = testing::Test;
TEST_F(ParserTest, DataEmpty) {
std::vector<uint32_t> data;
auto program = Parse(data, {});
auto errs = program.Diagnostics().str();
ASSERT_FALSE(program.IsValid()) << errs;
EXPECT_EQ(errs, "error: line:0: Invalid SPIR-V magic number.");
}
constexpr auto kShaderWithNonUniformDerivative = R"(
OpCapability Shader
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %foo "foo" %x
OpExecutionMode %foo OriginUpperLeft
OpDecorate %x Location 0
%float = OpTypeFloat 32
%_ptr_Input_float = OpTypePointer Input %float
%x = OpVariable %_ptr_Input_float Input
%void = OpTypeVoid
%float_0 = OpConstantNull %float
%bool = OpTypeBool
%func_type = OpTypeFunction %void
%foo = OpFunction %void None %func_type
%foo_start = OpLabel
%x_value = OpLoad %float %x
%condition = OpFOrdGreaterThan %bool %x_value %float_0
OpSelectionMerge %merge None
OpBranchConditional %condition %true_branch %merge
%true_branch = OpLabel
%result = OpDPdx %float %x_value
OpBranch %merge
%merge = OpLabel
OpReturn
OpFunctionEnd
)";
TEST_F(ParserTest, AllowNonUniformDerivatives_False) {
auto spv = test::Assemble(kShaderWithNonUniformDerivative);
Options options;
options.allow_non_uniform_derivatives = false;
auto program = Parse(spv, options);
auto errs = program.Diagnostics().str();
EXPECT_FALSE(program.IsValid()) << errs;
EXPECT_THAT(errs, ::testing::HasSubstr("'dpdx' must only be called from uniform control flow"));
}
TEST_F(ParserTest, AllowNonUniformDerivatives_True) {
auto spv = test::Assemble(kShaderWithNonUniformDerivative);
Options options;
options.allow_non_uniform_derivatives = true;
auto program = Parse(spv, options);
auto errs = program.Diagnostics().str();
EXPECT_TRUE(program.IsValid()) << errs;
EXPECT_EQ(program.Diagnostics().count(), 0u) << errs;
}
TEST_F(ParserTest, WorkgroupIdGuardingBarrier) {
auto spv = test::Assemble(R"(
OpCapability Shader
OpMemoryModel Logical GLSL450
OpEntryPoint GLCompute %foo "foo" %wgid
OpExecutionMode %foo LocalSize 1 1 1
OpDecorate %wgid BuiltIn WorkgroupId
%uint = OpTypeInt 32 0
%vec3u = OpTypeVector %uint 3
%_ptr_Input_vec3u = OpTypePointer Input %vec3u
%uint_0 = OpConstant %uint 0
%uint_2 = OpConstant %uint 2
%uint_8 = OpConstant %uint 8
%wgid = OpVariable %_ptr_Input_vec3u Input
%void = OpTypeVoid
%bool = OpTypeBool
%func_type = OpTypeFunction %void
%foo = OpFunction %void None %func_type
%foo_start = OpLabel
%wgid_value = OpLoad %vec3u %wgid
%wgid_x = OpCompositeExtract %uint %wgid_value 0
%condition = OpIEqual %bool %wgid_x %uint_0
OpSelectionMerge %merge None
OpBranchConditional %condition %true_branch %merge
%true_branch = OpLabel
OpControlBarrier %uint_2 %uint_2 %uint_8
OpBranch %merge
%merge = OpLabel
OpReturn
OpFunctionEnd
)");
auto program = Parse(spv, {});
auto errs = program.Diagnostics().str();
EXPECT_TRUE(program.IsValid()) << errs;
EXPECT_EQ(program.Diagnostics().count(), 0u) << errs;
}
// TODO(dneto): uint32 vec, valid SPIR-V
// TODO(dneto): uint32 vec, invalid SPIR-V
} // namespace
} // namespace tint::spirv::reader::ast_parser