UnpackRowLength.cpp

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Author : Jamie Madill
Date : 2016-07-18 10:10:29
Hash : 509a1d46
Message : GN: Enable more MSVS warnings. Some warnings were enabled only in standalone builds. Enabling them in the GN config will prevent standalone build breakage and also make some potentially harmful warnings more visible to non-Windows devs. BUG=angleproject:1449 Change-Id: I11fe9bac957864d37af37b3860a22fcbd91946ac Reviewed-on: https://chromium-review.googlesource.com/360961 Reviewed-by: Geoff Lang <geofflang@chromium.org> Reviewed-by: Olli Etuaho <oetuaho@nvidia.com> Commit-Queue: Jamie Madill <jmadill@chromium.org>

src/tests/gl_tests/UnpackRowLength.cpp

//
// Copyright 2015 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.
//

#include "test_utils/ANGLETest.h"

using namespace angle;

namespace
{

class UnpackRowLengthTest : public ANGLETest
{
  protected:
    UnpackRowLengthTest()
    {
        setWindowWidth(128);
        setWindowHeight(128);
        setConfigRedBits(8);
        setConfigGreenBits(8);
        setConfigBlueBits(8);
        setConfigAlphaBits(8);
        setConfigDepthBits(24);

        mProgram = 0;
    }

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

        const std::string vertexShaderSource = SHADER_SOURCE
        (
            precision highp float;
            attribute vec4 position;

            void main()
            {
                gl_Position = position;
            }
        );

        const std::string fragmentShaderSource = SHADER_SOURCE
        (
            uniform sampler2D tex;

            void main()
            {
                gl_FragColor = texture2D(tex, vec2(0.0, 1.0));
            }
        );

        mProgram = CompileProgram(vertexShaderSource, fragmentShaderSource);
        if (mProgram == 0)
        {
            FAIL() << "shader compilation failed.";
        }
    }

    void TearDown() override
    {
        glDeleteProgram(mProgram);

        ANGLETest::TearDown();
    }

    void testRowLength(int texSize, int rowLength)
    {
        glPixelStorei(GL_UNPACK_ROW_LENGTH, rowLength);

        if ((getClientMajorVersion() == 3) || extensionEnabled("GL_EXT_unpack_subimage"))
        {
            // Only texSize * texSize region is filled as WHITE, other parts are BLACK.
            // If the UNPACK_ROW_LENGTH is implemented correctly, all texels inside this texture are WHITE.
            std::vector<GLubyte> buf(rowLength * texSize * 4);
            for (int y = 0; y < texSize; y++)
            {
                std::vector<GLubyte>::iterator rowIter = buf.begin() + y * rowLength * 4;
                std::fill(rowIter, rowIter + texSize * 4, static_cast<GLubyte>(255u));
                std::fill(rowIter + texSize * 4, rowIter + rowLength * 4, static_cast<GLubyte>(0u));
            }

            GLuint tex;
            glGenTextures(1, &tex);
            glBindTexture(GL_TEXTURE_2D, tex);

            glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, texSize, texSize, 0, GL_RGBA, GL_UNSIGNED_BYTE, &buf[0]);
            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);

            drawQuad(mProgram, "position", 0.5f);

            EXPECT_PIXEL_EQ(0, 0, 255, 255, 255, 255);
            EXPECT_PIXEL_EQ(1, 0, 255, 255, 255, 255);

            glDeleteTextures(1, &tex);
        }
        else
        {
            EXPECT_GL_ERROR(GL_INVALID_ENUM);
        }
    }

    GLuint mProgram;
};

TEST_P(UnpackRowLengthTest, RowLength128)
{
    testRowLength(128, 128);
}

TEST_P(UnpackRowLengthTest, RowLength1024)
{
    testRowLength(128, 1024);
}

// Use this to select which configurations (e.g. which renderer, which GLES major version) these tests should be run against.
ANGLE_INSTANTIATE_TEST(UnpackRowLengthTest,
                       ES3_D3D11(),
                       ES2_D3D11(),
                       ES2_D3D9(),
                       ES2_OPENGL(),
                       ES3_OPENGL(),
                       ES2_OPENGLES(),
                       ES3_OPENGLES());

} // namespace

kc3-lang/angle/src/tests/gl_tests/UnpackRowLength.cpp

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kc3-lang/angle /src/tests/gl_tests/UnpackRowLength.cpp