tests/angle_tests/GLSLStructTest.cpp

#include "ANGLETest.h"

class GLSLStructTest : public ANGLETest
{
protected:
    GLSLStructTest()
    {
        setWindowWidth(128);
        setWindowHeight(128);
        setConfigRedBits(8);
        setConfigGreenBits(8);
        setConfigBlueBits(8);
        setConfigAlphaBits(8);
    }

    virtual void SetUp()
    {
        ANGLETest::SetUp();

        mVertexShaderSource = SHADER_SOURCE
        (
            attribute vec4 inputAttribute;
            void main()
            {
                gl_Position = inputAttribute;
            }
        );
    }

    std::string mVertexShaderSource;
};

TEST_F(GLSLStructTest, nameless_scoped_structs)
{
    const std::string fragmentShaderSource = SHADER_SOURCE
    (
        precision mediump float;

        void main()
        {
            struct
            {
                float q;
            } b;

            gl_FragColor = vec4(1, 0, 0, 1);
            gl_FragColor.a += b.q;
        }
    );

    GLuint program = compileProgram(mVertexShaderSource, fragmentShaderSource);
    EXPECT_NE(0u, program);
}
TEST_F(GLSLStructTest, scoped_structs_order_bug)
{
    const std::string fragmentShaderSource = SHADER_SOURCE
    (
        precision mediump float;

        struct T
        {
            float f;
        };

        void main()
        {
            T a;

            struct T
            {
                float q;
            };

            T b;

            gl_FragColor = vec4(1, 0, 0, 1);
            gl_FragColor.a += a.f;
            gl_FragColor.a += b.q;
        }
    );

    GLuint program = compileProgram(mVertexShaderSource, fragmentShaderSource);
    EXPECT_NE(0u, program);
}

TEST_F(GLSLStructTest, scoped_structs_bug)
{
    const std::string fragmentShaderSource = SHADER_SOURCE
    (
        precision mediump float;

        struct T_0
        {
            float f;
        };

        void main()
        {
            gl_FragColor = vec4(1, 0, 0, 1);

            struct T
            {
                vec2 v;
            };

            T_0 a;
            T b;

            gl_FragColor.a += a.f;
            gl_FragColor.a += b.v.x;
        }
    );

    GLuint program = compileProgram(mVertexShaderSource, fragmentShaderSource);
    EXPECT_NE(0u, program);
}