EGLSurfacelessContextTest.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/egl_tests/EGLSurfacelessContextTest.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.
//

// EGLSurfacelessContextTest.cpp:
//   Tests for the EGL_KHR_surfaceless_context and GL_OES_surfaceless_context

#include <gtest/gtest.h>

#include "test_utils/ANGLETest.h"
#include "test_utils/angle_test_configs.h"
#include "test_utils/gl_raii.h"

using namespace angle;

namespace
{

class EGLSurfacelessContextTest : public ANGLETest
{
  public:
    EGLSurfacelessContextTest() : mDisplay(0) {}

    void testSetUp() override
    {
        EGLint dispattrs[] = {EGL_PLATFORM_ANGLE_TYPE_ANGLE, GetParam().getRenderer(), EGL_NONE};
        mDisplay           = eglGetPlatformDisplayEXT(
            EGL_PLATFORM_ANGLE_ANGLE, reinterpret_cast<void *>(EGL_DEFAULT_DISPLAY), dispattrs);
        ASSERT_TRUE(mDisplay != EGL_NO_DISPLAY);

        ASSERT_EGL_TRUE(eglInitialize(mDisplay, nullptr, nullptr));

        int nConfigs = 0;
        ASSERT_EGL_TRUE(eglGetConfigs(mDisplay, nullptr, 0, &nConfigs));
        ASSERT_TRUE(nConfigs != 0);

        int nReturnedConfigs = 0;
        std::vector<EGLConfig> configs(nConfigs);
        ASSERT_EGL_TRUE(eglGetConfigs(mDisplay, configs.data(), nConfigs, &nReturnedConfigs));
        ASSERT_TRUE(nConfigs == nReturnedConfigs);

        for (auto config : configs)
        {
            EGLint surfaceType;
            eglGetConfigAttrib(mDisplay, config, EGL_SURFACE_TYPE, &surfaceType);
            if (surfaceType & EGL_PBUFFER_BIT)
            {
                mConfig = config;
                break;
            }
        }
        ASSERT_NE(nullptr, mConfig);
    }

    void testTearDown() override
    {
        eglMakeCurrent(mDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);

        if (mContext != EGL_NO_CONTEXT)
        {
            eglDestroyContext(mDisplay, mContext);
        }

        if (mPbuffer != EGL_NO_SURFACE)
        {
            eglDestroySurface(mDisplay, mPbuffer);
        }

        eglTerminate(mDisplay);
    }

  protected:
    EGLContext createContext()
    {
        const EGLint contextAttribs[] = {EGL_CONTEXT_CLIENT_VERSION, 2, EGL_NONE};

        mContext = eglCreateContext(mDisplay, mConfig, EGL_NO_CONTEXT, contextAttribs);
        EXPECT_TRUE(mContext != EGL_NO_CONTEXT);
        return mContext;
    }

    EGLSurface createPbuffer(int width, int height)
    {
        const EGLint pbufferAttribs[] = {
            EGL_WIDTH, 500, EGL_HEIGHT, 500, EGL_NONE,
        };
        mPbuffer = eglCreatePbufferSurface(mDisplay, mConfig, pbufferAttribs);
        EXPECT_TRUE(mPbuffer != EGL_NO_SURFACE);
        return mPbuffer;
    }

    void createFramebuffer(GLFramebuffer *fbo, GLTexture *tex) const
    {
        glBindFramebuffer(GL_FRAMEBUFFER, fbo->get());

        glBindTexture(GL_TEXTURE_2D, tex->get());
        glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 500, 500, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);

        glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, tex->get(), 0);
        EXPECT_GLENUM_EQ(GL_FRAMEBUFFER_COMPLETE, glCheckFramebufferStatus(GL_FRAMEBUFFER));
    }

    bool checkExtension(bool verbose = true) const
    {
        if (!IsEGLDisplayExtensionEnabled(mDisplay, "EGL_KHR_surfaceless_context"))
        {
            if (verbose)
            {
                std::cout << "Test skipped because EGL_KHR_surfaceless_context is not available."
                          << std::endl;
            }
            return false;
        }
        return true;
    }

    EGLContext mContext = EGL_NO_CONTEXT;
    EGLSurface mPbuffer = EGL_NO_SURFACE;
    EGLConfig mConfig   = 0;
    EGLDisplay mDisplay = EGL_NO_DISPLAY;
};

// Test surfaceless MakeCurrent returns the correct value.
TEST_P(EGLSurfacelessContextTest, MakeCurrentSurfaceless)
{
    EGLContext context = createContext();

    if (eglMakeCurrent(mDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, context))
    {
        ASSERT_TRUE(checkExtension(false));
    }
    else
    {
        // The extension allows EGL_BAD_MATCH with the extension too, but ANGLE
        // shouldn't do that.
        ASSERT_FALSE(checkExtension(false));
    }
}

// Test that the scissor and viewport are set correctly
TEST_P(EGLSurfacelessContextTest, DefaultScissorAndViewport)
{
    if (!checkExtension())
    {
        return;
    }

    EGLContext context = createContext();
    ASSERT_EGL_TRUE(eglMakeCurrent(mDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, context));

    GLint scissor[4] = {1, 2, 3, 4};
    glGetIntegerv(GL_SCISSOR_BOX, scissor);
    ASSERT_GL_NO_ERROR();
    ASSERT_EQ(0, scissor[0]);
    ASSERT_EQ(0, scissor[1]);
    ASSERT_EQ(0, scissor[2]);
    ASSERT_EQ(0, scissor[3]);

    GLint viewport[4] = {1, 2, 3, 4};
    glGetIntegerv(GL_VIEWPORT, viewport);
    ASSERT_GL_NO_ERROR();
    ASSERT_EQ(0, viewport[0]);
    ASSERT_EQ(0, viewport[1]);
    ASSERT_EQ(0, viewport[2]);
    ASSERT_EQ(0, viewport[3]);
}

// Test the CheckFramebufferStatus returns the correct value.
TEST_P(EGLSurfacelessContextTest, CheckFramebufferStatus)
{
    if (!checkExtension())
    {
        return;
    }

    EGLContext context = createContext();
    ASSERT_EGL_TRUE(eglMakeCurrent(mDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, context));

    ASSERT_GLENUM_EQ(GL_FRAMEBUFFER_UNDEFINED_OES, glCheckFramebufferStatus(GL_FRAMEBUFFER));

    GLFramebuffer fbo;
    GLTexture tex;
    createFramebuffer(&fbo, &tex);
    glBindFramebuffer(GL_FRAMEBUFFER, fbo.get());
    ASSERT_GLENUM_EQ(GL_FRAMEBUFFER_COMPLETE, glCheckFramebufferStatus(GL_FRAMEBUFFER));
}

// Test that clearing and readpixels work when done in an FBO.
TEST_P(EGLSurfacelessContextTest, ClearReadPixelsInFBO)
{
    if (!checkExtension())
    {
        return;
    }

    EGLContext context = createContext();
    ASSERT_EGL_TRUE(eglMakeCurrent(mDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, context));

    GLFramebuffer fbo;
    GLTexture tex;
    createFramebuffer(&fbo, &tex);
    glBindFramebuffer(GL_FRAMEBUFFER, fbo.get());

    glClearColor(1.0f, 0.0f, 0.0f, 1.0f);
    glClear(GL_COLOR_BUFFER_BIT);
    ASSERT_GL_NO_ERROR();

    EXPECT_PIXEL_COLOR_EQ(250, 250, GLColor::red);
    ASSERT_GL_NO_ERROR();
}

// Test clear+readpixels in an FBO in surfaceless and in the default FBO in a pbuffer
TEST_P(EGLSurfacelessContextTest, Switcheroo)
{
    if (!checkExtension())
    {
        return;
    }

    EGLContext context = createContext();
    EGLSurface pbuffer = createPbuffer(500, 500);

    // We need to make the context current to do the one time setup of the FBO
    ASSERT_EGL_TRUE(eglMakeCurrent(mDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, context));
    GLFramebuffer fbo;
    GLTexture tex;
    createFramebuffer(&fbo, &tex);
    glBindFramebuffer(GL_FRAMEBUFFER, fbo.get());

    for (int i = 0; i < 4; ++i)
    {
        // Clear to red in the FBO in surfaceless mode
        ASSERT_EGL_TRUE(eglMakeCurrent(mDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, context));

        glBindFramebuffer(GL_FRAMEBUFFER, fbo.get());
        glClearColor(1.0f, 0.0f, 0.0f, 1.0f);
        glClear(GL_COLOR_BUFFER_BIT);
        ASSERT_GL_NO_ERROR();

        EXPECT_PIXEL_COLOR_EQ(250, 250, GLColor::red);
        ASSERT_GL_NO_ERROR();

        // Clear to green in the pbuffer
        ASSERT_EGL_TRUE(eglMakeCurrent(mDisplay, pbuffer, pbuffer, context));

        glBindFramebuffer(GL_FRAMEBUFFER, 0);
        glClearColor(0.0f, 1.0f, 0.0f, 1.0f);
        glClear(GL_COLOR_BUFFER_BIT);
        ASSERT_GL_NO_ERROR();

        EXPECT_PIXEL_COLOR_EQ(250, 250, GLColor::green);
        ASSERT_GL_NO_ERROR();
    }
}

}  // anonymous namespace

ANGLE_INSTANTIATE_TEST(EGLSurfacelessContextTest,
                       WithNoFixture(ES2_D3D9()),
                       WithNoFixture(ES2_D3D11()),
                       WithNoFixture(ES2_OPENGL()),
                       WithNoFixture(ES2_VULKAN()));

kc3-lang/angle/src/tests/egl_tests/EGLSurfacelessContextTest.cpp

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kc3-lang/angle /src/tests/egl_tests/EGLSurfacelessContextTest.cpp