DifferentStencilMasksTest.cpp

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Author : Jamie Madill
Date : 2019-05-07 15:49:22
Hash : 5cbaa3f8
Message : Don't inherit ANGLETest SetUp and TearDown. Instead of inheriting from testing::Test's SetUp and TearDown we add new methods 'testSetUp' and 'testTearDown'. This helps prevent a common error of forgetting to call the base class method. Also add a check in the ANGLETest destructor that SetUp and TearDown have been called. Bug: angleproject:3393 Change-Id: Iab211305cc06ffea9ca649e864ddc9b180f2cba0 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1593960 Reviewed-by: Geoff Lang <geofflang@chromium.org> Commit-Queue: Jamie Madill <jmadill@chromium.org>

src/tests/gl_tests/DifferentStencilMasksTest.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.
//
// DifferentStencilMasksTest:
//   Tests the equality between stencilWriteMask and stencilBackWriteMask.
//

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

using namespace angle;

namespace
{
class DifferentStencilMasksTest : public ANGLETest
{
  protected:
    DifferentStencilMasksTest() : mProgram(0)
    {
        setWindowWidth(128);
        setWindowHeight(128);
        setConfigRedBits(8);
        setConfigGreenBits(8);
        setConfigBlueBits(8);
        setConfigAlphaBits(8);
        setConfigDepthBits(24);
        setConfigStencilBits(8);

        setWebGLCompatibilityEnabled(true);
    }

    void testSetUp() override
    {
        mProgram = CompileProgram(essl1_shaders::vs::Zero(), essl1_shaders::fs::Blue());
        ASSERT_NE(0u, mProgram);

        glEnable(GL_STENCIL_TEST);
        ASSERT_GL_NO_ERROR();
    }

    void testTearDown() override
    {
        glDisable(GL_STENCIL_TEST);
        if (mProgram != 0)
            glDeleteProgram(mProgram);
    }

    GLuint mProgram;
};

// Tests that effectively same front and back masks are legal.
TEST_P(DifferentStencilMasksTest, DrawWithSameEffectiveMask)
{
    // 0x00ff and 0x01ff are effectively 0x00ff by being masked by the current stencil bits, 8.
    glStencilMaskSeparate(GL_FRONT, 0x00ff);
    glStencilMaskSeparate(GL_BACK, 0x01ff);

    glUseProgram(mProgram);

    glDrawArrays(GL_TRIANGLES, 0, 3);

    EXPECT_GL_NO_ERROR();
}

// Tests that effectively different front and back masks are illegal.
TEST_P(DifferentStencilMasksTest, DrawWithDifferentMask)
{
    glStencilMaskSeparate(GL_FRONT, 0x0001);
    glStencilMaskSeparate(GL_BACK, 0x0002);

    glUseProgram(mProgram);

    glDrawArrays(GL_TRIANGLES, 0, 3);

    EXPECT_GL_ERROR(GL_INVALID_OPERATION);
}

// Tests that effectively different front and back masks, without stencil bits, are legal.
TEST_P(DifferentStencilMasksTest, DrawWithDifferentMask_NoStencilBuffer)
{
    GLTexture texture;
    glBindTexture(GL_TEXTURE_2D, texture.get());
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 64, 64, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);

    GLFramebuffer framebuffer;
    glBindFramebuffer(GL_FRAMEBUFFER, framebuffer.get());
    glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture.get(), 0);

    glStencilMaskSeparate(GL_FRONT, 0x0001);
    glStencilMaskSeparate(GL_BACK, 0x0002);

    glUseProgram(mProgram);

    glDrawArrays(GL_TRIANGLES, 0, 3);

    EXPECT_GL_NO_ERROR();
}

// Use this to select which configurations (e.g. which renderer, which GLES major version) these
// tests should be run against.
ANGLE_INSTANTIATE_TEST(DifferentStencilMasksTest,
                       ES2_D3D9(),
                       ES2_D3D11(),
                       ES3_D3D11(),
                       ES2_OPENGL(),
                       ES3_OPENGL(),
                       ES2_VULKAN());
}  // anonymous namespace

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

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