/*
    This file is part of Magnum.

    Copyright © 2010, 2011, 2012, 2013, 2014
              Vladimír Vondruš <mosra@centrum.cz>

    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 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 <Corrade/TestSuite/Tester.h>

#include "Magnum/AbstractShaderProgram.h"

namespace Magnum { namespace Test {

class AbstractShaderProgramTest: public TestSuite::Tester {
    public:
        explicit AbstractShaderProgramTest();

        void attributeScalar();
        void attributeScalarInt();
        void attributeScalarUnsignedInt();
        void attributeScalarDouble();

        void attributeVector();
        void attributeVectorInt();
        void attributeVectorUnsignedInt();
        void attributeVectorDouble();
        void attributeVector4();
        void attributeVectorBGRA();

        void attributeMatrixNxN();
        #ifndef MAGNUM_TARGET_GLES2
        void attributeMatrixMxN();
        #endif
        void attributeMatrixNxNd();
        void attributeMatrixMxNd();
};

AbstractShaderProgramTest::AbstractShaderProgramTest() {
    addTests<AbstractShaderProgramTest>({&AbstractShaderProgramTest::attributeScalar,
              &AbstractShaderProgramTest::attributeScalarInt,
              &AbstractShaderProgramTest::attributeScalarUnsignedInt,
              &AbstractShaderProgramTest::attributeScalarDouble,

              &AbstractShaderProgramTest::attributeVector,
              &AbstractShaderProgramTest::attributeVectorInt,
              &AbstractShaderProgramTest::attributeVectorUnsignedInt,
              &AbstractShaderProgramTest::attributeVectorDouble,
              &AbstractShaderProgramTest::attributeVector4,
              &AbstractShaderProgramTest::attributeVectorBGRA,

              &AbstractShaderProgramTest::attributeMatrixNxN,
              #ifndef MAGNUM_TARGET_GLES2
              &AbstractShaderProgramTest::attributeMatrixMxN,
              #endif
              &AbstractShaderProgramTest::attributeMatrixNxNd,
              &AbstractShaderProgramTest::attributeMatrixMxNd});
}

void AbstractShaderProgramTest::attributeScalar() {
    typedef AbstractShaderProgram::Attribute<3, Float> Attribute;
    /* GCC 4.5: no bool conversion operator */
    CORRADE_VERIFY((std::is_same<Attribute::ScalarType, Float>::value));
    CORRADE_COMPARE(Int(Attribute::Location), 3);
    CORRADE_COMPARE(Int(Attribute::VectorCount), 1);

    /* Default constructor */
    Attribute a;
    CORRADE_COMPARE(a.components(), Attribute::Components::One);
    CORRADE_VERIFY(!a.dataOptions());
    CORRADE_COMPARE(a.vectorSize(), 4);
    CORRADE_COMPARE(a.dataType(), Attribute::DataType::Float);

    /* Options */
    Attribute b(Attribute::DataType::UnsignedShort, Attribute::DataOption::Normalized);
    CORRADE_COMPARE(b.vectorSize(), 2);
    CORRADE_VERIFY(b.dataOptions() <= Attribute::DataOption::Normalized);
}

void AbstractShaderProgramTest::attributeScalarInt() {
    #ifndef MAGNUM_TARGET_GLES2
    typedef AbstractShaderProgram::Attribute<3, Int> Attribute;
    /* GCC 4.5: no bool conversion operator */
    CORRADE_VERIFY((std::is_same<Attribute::ScalarType, Int>::value));
    CORRADE_COMPARE(Int(Attribute::VectorCount), 1);

    /* Default constructor */
    Attribute a;
    CORRADE_COMPARE(a.vectorSize(), 4);

    /* Options */
    Attribute b(Attribute::DataType::Short);
    CORRADE_COMPARE(b.vectorSize(), 2);
    #else
    CORRADE_SKIP("Integer attributes are not available in OpenGL ES 2.");
    #endif
}

void AbstractShaderProgramTest::attributeScalarUnsignedInt() {
    #ifndef MAGNUM_TARGET_GLES2
    typedef AbstractShaderProgram::Attribute<3, UnsignedInt> Attribute;
    /* GCC 4.5: no bool conversion operator */
    CORRADE_VERIFY((std::is_same<Attribute::ScalarType, UnsignedInt>::value));
    CORRADE_COMPARE(Int(Attribute::VectorCount), 1);

    /* Default constructor */
    Attribute a;
    CORRADE_COMPARE(a.vectorSize(), 4);

    /* Options */
    Attribute b(Attribute::DataType::UnsignedByte);
    CORRADE_COMPARE(b.vectorSize(), 1);
    #else
    CORRADE_SKIP("Integer attributes are not available in OpenGL ES 2.");
    #endif
}

void AbstractShaderProgramTest::attributeScalarDouble() {
    #ifndef MAGNUM_TARGET_GLES
    typedef AbstractShaderProgram::Attribute<3, Double> Attribute;
    /* GCC 4.5: no bool conversion operator */
    CORRADE_VERIFY((std::is_same<Attribute::ScalarType, Double>::value));
    CORRADE_COMPARE(Int(Attribute::VectorCount), 1);

    /* Default constructor */
    Attribute a;
    CORRADE_COMPARE(a.vectorSize(), 8);
    #else
    CORRADE_SKIP("Double attributes are not available in OpenGL ES.");
    #endif
}

void AbstractShaderProgramTest::attributeVector() {
    typedef AbstractShaderProgram::Attribute<3, Vector3> Attribute;
    /* GCC 4.5: no bool conversion operator */
    CORRADE_VERIFY((std::is_same<Attribute::ScalarType, Float>::value));
    CORRADE_COMPARE(Int(Attribute::VectorCount), 1);

    /* Default constructor */
    Attribute a;
    CORRADE_COMPARE(a.components(), Attribute::Components::Three);
    CORRADE_COMPARE(a.vectorSize(), 3*4);
    CORRADE_COMPARE(a.dataType(), Attribute::DataType::Float);

    /* Options */
    #ifndef MAGNUM_TARGET_GLES
    Attribute b(Attribute::Components::Two, Attribute::DataType::Double);
    CORRADE_COMPARE(b.components(), Attribute::Components::Two);
    CORRADE_COMPARE(b.vectorSize(), 2*8);
    #else
    Attribute b(Attribute::Components::Two, Attribute::DataType::Float);
    CORRADE_COMPARE(b.components(), Attribute::Components::Two);
    CORRADE_COMPARE(b.vectorSize(), 2*4);
    #endif
}

void AbstractShaderProgramTest::attributeVectorInt() {
    #ifndef MAGNUM_TARGET_GLES2
    typedef AbstractShaderProgram::Attribute<3, Vector2i> Attribute;
    /* GCC 4.5: no bool conversion operator */
    CORRADE_VERIFY((std::is_same<Attribute::ScalarType, Int>::value));
    CORRADE_COMPARE(Int(Attribute::VectorCount), 1);

    /* Default constructor */
    Attribute a;
    CORRADE_COMPARE(a.components(), Attribute::Components::Two);
    CORRADE_COMPARE(a.vectorSize(), 2*4);
    CORRADE_COMPARE(a.dataType(), Attribute::DataType::Int);

    /* Options */
    Attribute b(Attribute::Components::One, Attribute::DataType::Int);
    CORRADE_COMPARE(b.vectorSize(), 4);
    #else
    CORRADE_SKIP("Integer attributes are not available in OpenGL ES 2.");
    #endif
}

void AbstractShaderProgramTest::attributeVectorUnsignedInt() {
    #ifndef MAGNUM_TARGET_GLES2
    typedef AbstractShaderProgram::Attribute<3, Vector4ui> Attribute;
    /* GCC 4.5: no bool conversion operator */
    CORRADE_VERIFY((std::is_same<Attribute::ScalarType, UnsignedInt>::value));
    CORRADE_COMPARE(Int(Attribute::VectorCount), 1);

    /* Default constructor */
    Attribute a;
    CORRADE_COMPARE(a.components(), Attribute::Components::Four);
    CORRADE_COMPARE(a.vectorSize(), 4*4);
    CORRADE_COMPARE(a.dataType(), Attribute::DataType::UnsignedInt);

    /* Options */
    Attribute b(Attribute::Components::Three, Attribute::DataType::UnsignedShort);
    CORRADE_COMPARE(b.vectorSize(), 3*2);
    #else
    CORRADE_SKIP("Integer attributes are not available in OpenGL ES 2.");
    #endif
}

void AbstractShaderProgramTest::attributeVectorDouble() {
    #ifndef MAGNUM_TARGET_GLES
    typedef AbstractShaderProgram::Attribute<3, Vector2d> Attribute;
    /* GCC 4.5: no bool conversion operator */
    CORRADE_VERIFY((std::is_same<Attribute::ScalarType, Double>::value));
    CORRADE_COMPARE(Int(Attribute::VectorCount), 1);

    /* Default constructor */
    Attribute a;
    CORRADE_COMPARE(a.components(), Attribute::Components::Two);
    CORRADE_COMPARE(a.vectorSize(), 2*8);
    CORRADE_COMPARE(a.dataType(), Attribute::DataType::Double);

    /* Options */
    Attribute b(Attribute::Components::One);
    CORRADE_COMPARE(b.vectorSize(), 8);
    #else
    CORRADE_SKIP("Double attributes are not available in OpenGL ES.");
    #endif
}

void AbstractShaderProgramTest::attributeVector4() {
    typedef AbstractShaderProgram::Attribute<3, Vector4> Attribute;
    /* GCC 4.5: no bool conversion operator */
    CORRADE_VERIFY((std::is_same<Attribute::ScalarType, Float>::value));
    CORRADE_COMPARE(Int(Attribute::VectorCount), 1);

    /* Custom type */
    #ifndef MAGNUM_TARGET_GLES
    Attribute a(Attribute::DataType::UnsignedInt2101010Rev);
    CORRADE_COMPARE(a.vectorSize(), 4);
    #else
    Attribute a(Attribute::DataType::HalfFloat);
    CORRADE_COMPARE(a.vectorSize(), 8);
    #endif
}

void AbstractShaderProgramTest::attributeVectorBGRA() {
    #ifndef MAGNUM_TARGET_GLES
    typedef AbstractShaderProgram::Attribute<3, Vector4> Attribute;
    /* GCC 4.5: no bool conversion operator */
    CORRADE_VERIFY((std::is_same<Attribute::ScalarType, Float>::value));
    CORRADE_COMPARE(Int(Attribute::VectorCount), 1);

    /* BGRA */
    Attribute a(Attribute::Components::BGRA);
    CORRADE_COMPARE(a.vectorSize(), 4*4);
    #else
    CORRADE_SKIP("BGRA attribute component ordering is not available in OpenGL ES.");
    #endif
}

void AbstractShaderProgramTest::attributeMatrixNxN() {
    typedef AbstractShaderProgram::Attribute<3, Matrix3> Attribute;
    /* GCC 4.5: no bool conversion operator */
    CORRADE_VERIFY((std::is_same<Attribute::ScalarType, Float>::value));
    CORRADE_COMPARE(Int(Attribute::VectorCount), 3);

    /* Default constructor */
    Attribute a;
    CORRADE_COMPARE(a.components(), Attribute::Components::Three);
    CORRADE_COMPARE(a.vectorSize(), 3*4);
    CORRADE_COMPARE(a.dataType(), Attribute::DataType::Float);
}

#ifndef MAGNUM_TARGET_GLES2
void AbstractShaderProgramTest::attributeMatrixMxN() {
    typedef AbstractShaderProgram::Attribute<3, Matrix3x4> Attribute;
    /* GCC 4.5: no bool conversion operator */
    CORRADE_VERIFY((std::is_same<Attribute::ScalarType, Float>::value));
    CORRADE_COMPARE(Int(Attribute::VectorCount), 3);

    /* Default constructor */
    Attribute a;
    CORRADE_COMPARE(a.components(), Attribute::Components::Four);
    CORRADE_COMPARE(a.vectorSize(), 4*4);
    CORRADE_COMPARE(a.dataType(), Attribute::DataType::Float);
}
#endif

void AbstractShaderProgramTest::attributeMatrixNxNd() {
    #ifndef MAGNUM_TARGET_GLES
    typedef AbstractShaderProgram::Attribute<3, Matrix4d> Attribute;
    /* GCC 4.5: no bool conversion operator */
    CORRADE_VERIFY((std::is_same<Attribute::ScalarType, Double>::value));
    CORRADE_COMPARE(Int(Attribute::VectorCount), 4);

    /* Default constructor */
    Attribute a;
    CORRADE_COMPARE(a.components(), Attribute::Components::Four);
    CORRADE_COMPARE(a.vectorSize(), 4*8);
    CORRADE_COMPARE(a.dataType(), Attribute::DataType::Double);
    #else
    CORRADE_SKIP("Double attributes are not available in OpenGL ES.");
    #endif
}

void AbstractShaderProgramTest::attributeMatrixMxNd() {
    #ifndef MAGNUM_TARGET_GLES
    typedef AbstractShaderProgram::Attribute<3, Matrix4x2d> Attribute;
    /* GCC 4.5: no bool conversion operator */
    CORRADE_VERIFY((std::is_same<Attribute::ScalarType, Double>::value));
    CORRADE_COMPARE(Int(Attribute::VectorCount), 4);

    /* Default constructor */
    Attribute a;
    CORRADE_COMPARE(a.components(), Attribute::Components::Two);
    CORRADE_COMPARE(a.vectorSize(), 2*8);
    CORRADE_COMPARE(a.dataType(), Attribute::DataType::Double);
    #else
    CORRADE_SKIP("Double attributes are not available in OpenGL ES.");
    #endif
}

}}

CORRADE_TEST_MAIN(Magnum::Test::AbstractShaderProgramTest)