HLSLOutput_test.cpp

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Author : Stuart Morgan
Date : 2019-08-14 12:25:12
Hash : 9d737966
Message : Standardize copyright notices to project style For all "ANGLE Project" copyrights, standardize to the format specified by the style guide. Changes: - "Copyright (c)" and "Copyright(c)" changed to just "Copyright". - Removed the second half of date ranges ("Y1Y1-Y2Y2"->"Y1Y1"). - Fixed a small number of files that had no copyright date using the initial commit year from the version control history. - Fixed one instance of copyright being "The ANGLE Project" rather than "The ANGLE Project Authors" These changes are applied both to the copyright of source file, and where applicable to copyright statements that are generated by templates. BUG=angleproject:3811 Change-Id: I973dd65e4ef9deeba232d5be74c768256a0eb2e5 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1754397 Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org>

src/tests/compiler_tests/HLSLOutput_test.cpp

//
// Copyright 2017 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// HLSLOutput_test.cpp:
//   Tests for HLSL output.
//

#include <regex>
#include "GLSLANG/ShaderLang.h"
#include "angle_gl.h"
#include "gtest/gtest.h"
#include "tests/test_utils/compiler_test.h"

using namespace sh;

class HLSLOutputTest : public MatchOutputCodeTest
{
  public:
    HLSLOutputTest() : MatchOutputCodeTest(GL_FRAGMENT_SHADER, 0, SH_HLSL_4_1_OUTPUT) {}
};

class HLSL30VertexOutputTest : public MatchOutputCodeTest
{
  public:
    HLSL30VertexOutputTest() : MatchOutputCodeTest(GL_VERTEX_SHADER, 0, SH_HLSL_3_0_OUTPUT) {}
};

// Test that having dynamic indexing of a vector inside the right hand side of logical or doesn't
// trigger asserts in HLSL output.
TEST_F(HLSLOutputTest, DynamicIndexingOfVectorOnRightSideOfLogicalOr)
{
    const std::string &shaderString =
        "#version 300 es\n"
        "precision highp float;\n"
        "out vec4 my_FragColor;\n"
        "uniform int u1;\n"
        "void main() {\n"
        "   bvec4 v = bvec4(true, true, true, false);\n"
        "   my_FragColor = vec4(v[u1 + 1] || v[u1]);\n"
        "}\n";
    compile(shaderString);
}

// Test that rewriting else blocks in a function that returns a struct doesn't use the struct name
// without a prefix.
TEST_F(HLSL30VertexOutputTest, RewriteElseBlockReturningStruct)
{
    const std::string &shaderString =
        "struct foo\n"
        "{\n"
        "    float member;\n"
        "};\n"
        "uniform bool b;\n"
        "foo getFoo()\n"
        "{\n"
        "    if (b)\n"
        "    {\n"
        "        return foo(0.0);\n"
        "    }\n"
        "    else\n"
        "    {\n"
        "        return foo(1.0);\n"
        "    }\n"
        "}\n"
        "void main()\n"
        "{\n"
        "   gl_Position = vec4(getFoo().member);\n"
        "}\n";
    compile(shaderString);
    EXPECT_TRUE(foundInCode("_foo"));
    EXPECT_FALSE(foundInCode("(foo)"));
    EXPECT_FALSE(foundInCode(" foo"));
}

// Test that having an array constructor as a statement doesn't trigger an assert in HLSL output.
// This test has a constant array constructor statement.
TEST_F(HLSLOutputTest, ConstArrayConstructorStatement)
{
    const std::string &shaderString =
        R"(#version 300 es
        void main()
        {
            int[1](0);
        })";
    compile(shaderString);
}

// Test that having an array constructor as a statement doesn't trigger an assert in HLSL output.
TEST_F(HLSLOutputTest, ArrayConstructorStatement)
{
    const std::string &shaderString =
        R"(#version 300 es
        precision mediump float;
        out vec4 outColor;
        void main()
        {
            outColor = vec4(0.0, 0.0, 0.0, 1.0);
            float[1](outColor[1]++);
        })";
    compile(shaderString);
}

// Test an array of arrays constructor as a statement.
TEST_F(HLSLOutputTest, ArrayOfArraysStatement)
{
    const std::string &shaderString =
        R"(#version 310 es
        precision mediump float;
        out vec4 outColor;
        void main()
        {
            outColor = vec4(0.0, 0.0, 0.0, 1.0);
            float[2][2](float[2](outColor[1]++, 0.0), float[2](1.0, 2.0));
        })";
    compile(shaderString);
}

// Test dynamic indexing of a vector. This makes sure that helper functions added for dynamic
// indexing have correct data that subsequent traversal steps rely on.
TEST_F(HLSLOutputTest, VectorDynamicIndexing)
{
    const std::string &shaderString =
        R"(#version 300 es
        precision mediump float;
        out vec4 outColor;
        uniform int i;
        void main()
        {
            vec4 foo = vec4(0.0, 0.0, 0.0, 1.0);
            foo[i] = foo[i + 1];
            outColor = foo;
        })";
    compile(shaderString);
}

// Test returning an array from a user-defined function. This makes sure that function symbols are
// changed consistently when the user-defined function is changed to have an array out parameter.
TEST_F(HLSLOutputTest, ArrayReturnValue)
{
    const std::string &shaderString =
        R"(#version 300 es
        precision mediump float;
        uniform float u;
        out vec4 outColor;

        float[2] getArray(float f)
        {
            return float[2](f, f + 1.0);
        }

        void main()
        {
            float[2] arr = getArray(u);
            outColor = vec4(arr[0], arr[1], 0.0, 1.0);
        })";
    compile(shaderString);
}

// Test that writing parameters without a name doesn't assert.
TEST_F(HLSLOutputTest, ParameterWithNoName)
{
    const std::string &shaderString =
        R"(precision mediump float;

        uniform vec4 v;

        vec4 s(vec4)
        {
            return v;
        }
        void main()
        {
            gl_FragColor = s(v);
        })";
    compile(shaderString);
}

// Test that array dimensions are written out correctly.
TEST_F(HLSLOutputTest, Array)
{
    const std::string &shaderString =
        R"(#version 300 es
        precision mediump float;

        uniform float uf;

        out vec4 my_FragColor;

        void main()
        {
            my_FragColor = vec4(0.0, 0.0, 0.0, 1.0);
            float arr[2];
            for (int i = 0; i < 2; ++i) {
                arr[i] = uf * 2.0;
                my_FragColor.x += arr[i];
            }
        })";
    compile(shaderString);
    EXPECT_TRUE(foundInCodeRegex(std::regex("_arr(\\d)*\\[2\\]")));
}

// Test that initializing array with previously declared array will not be overwritten
TEST_F(HLSLOutputTest, SameNameArray)
{
    const std::string &shaderString =
        R"(#version 300 es
        precision highp float;
        out vec4 my_FragColor;

        void main()
        {
          float arr[2] = float[2](1.0, 1.0);
          {
            float arr[2] = arr;
            my_FragColor = vec4(0.0, arr[0], 0.0, arr[1]);
          }
        })";
    compile(shaderString);
    // There should be two different arr defined, e.g. _arr1000 and _arr1001
    // Use Workaround for now.
    // Once the build team fixes libc++ we could use the following one line solution instead.
    // EXPECT_TRUE(foundInCodeRegex(std::regex("_arr(\\d*)\\[2\\](.|\\r|\\n)*_arr(?!\\1)\\d*\\[2\\]")));
    std::smatch m;
    EXPECT_TRUE(foundInCodeRegex(std::regex("_arr(\\d)*\\[2\\]"), &m));
    EXPECT_TRUE(m.size() == 2);
    EXPECT_TRUE(m[0].str() != m[1].str());
}

// Test that passing a non-struct member of a std140 structure to a function won't trigger the
// struct mapping.
TEST_F(HLSLOutputTest, NonStructMemberAsFunctionArgument)
{
    constexpr char shaderString[] = R"(#version 300 es
precision highp float;
out vec4 my_FragColor;

struct InstancingData
{
    vec4 data;
};

layout(std140) uniform InstanceBlock
{
    InstancingData instances[8];
};

void main()
{
    int index = int(gl_FragCoord.x);
    float result = dot(instances[index].data, vec4(1.0, 1.0, 1.0, 1.0));
    my_FragColor = vec4(result, 0.0, 0.0, 1.0);
})";

    compile(shaderString);
    EXPECT_FALSE(foundInCode("map_instances"));
}

kc3-lang/angle/src/tests/compiler_tests/HLSLOutput_test.cpp

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kc3-lang/angle /src/tests/compiler_tests/HLSLOutput_test.cpp