AtomicCounterBufferTest.cpp

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Author : Charlie Lao
Date : 2021-08-05 14:32:16
Hash : e28fb127
Message : Vulkan: Propagate BufferData changes to atomic counter binding This CL adds context to the observer list of atomic counter buffer so that it gets notified when BufferData is called on atomic counter buffer and set dirty bit accordingly. Bug: b/195678877 Change-Id: I924cf12ef54b5986d5c56b9e3b71584039490206 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3076170 Commit-Queue: Charlie Lao <cclao@google.com> Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
src/tests/gl_tests/AtomicCounterBufferTest.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.
//
// AtomicCounterBufferTest:
//   Various tests related for atomic counter buffers.
//

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

using namespace angle;

namespace
{

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

// Test GL_ATOMIC_COUNTER_BUFFER is not supported with version lower than ES31.
TEST_P(AtomicCounterBufferTest, AtomicCounterBufferBindings)
{
    ASSERT_EQ(3, getClientMajorVersion());
    GLBuffer atomicCounterBuffer;
    glBindBufferBase(GL_ATOMIC_COUNTER_BUFFER, 0, atomicCounterBuffer.get());
    if (getClientMinorVersion() < 1)
    {
        EXPECT_GL_ERROR(GL_INVALID_ENUM);
    }
    else
    {
        EXPECT_GL_NO_ERROR();
    }
}

class AtomicCounterBufferTest31 : public AtomicCounterBufferTest
{};

// Linking should fail if counters in vertex shader exceed gl_MaxVertexAtomicCounters.
TEST_P(AtomicCounterBufferTest31, ExceedMaxVertexAtomicCounters)
{
    constexpr char kVS[] =
        "#version 310 es\n"
        "layout(binding = 0) uniform atomic_uint foo[gl_MaxVertexAtomicCounters + 1];\n"
        "void main()\n"
        "{\n"
        "    atomicCounterIncrement(foo[0]);\n"
        "}\n";
    constexpr char kFS[] =
        "#version 310 es\n"
        "void main()\n"
        "{\n"
        "}\n";

    GLuint program = CompileProgram(kVS, kFS);
    EXPECT_EQ(0u, program);
}

// Counters matching across shader stages should fail if offsets aren't all specified.
// GLSL ES Spec 3.10.4, section 9.2.1.
TEST_P(AtomicCounterBufferTest31, OffsetNotAllSpecified)
{
    constexpr char kVS[] =
        "#version 310 es\n"
        "layout(binding = 0, offset = 4) uniform atomic_uint foo;\n"
        "void main()\n"
        "{\n"
        "    atomicCounterIncrement(foo);\n"
        "}\n";
    constexpr char kFS[] =
        "#version 310 es\n"
        "layout(binding = 0) uniform atomic_uint foo;\n"
        "void main()\n"
        "{\n"
        "}\n";

    GLuint program = CompileProgram(kVS, kFS);
    EXPECT_EQ(0u, program);
}

// Counters matching across shader stages should fail if offsets aren't all specified with same
// value.
TEST_P(AtomicCounterBufferTest31, OffsetNotAllSpecifiedWithSameValue)
{
    constexpr char kVS[] =
        "#version 310 es\n"
        "layout(binding = 0, offset = 4) uniform atomic_uint foo;\n"
        "void main()\n"
        "{\n"
        "    atomicCounterIncrement(foo);\n"
        "}\n";
    constexpr char kFS[] =
        "#version 310 es\n"
        "layout(binding = 0, offset = 8) uniform atomic_uint foo;\n"
        "void main()\n"
        "{\n"
        "}\n";

    GLuint program = CompileProgram(kVS, kFS);
    EXPECT_EQ(0u, program);
}

// Tests atomic counter reads using compute shaders. Used as a confidence check for the translator.
TEST_P(AtomicCounterBufferTest31, AtomicCounterReadCompute)
{
    // Skipping due to a bug on the Adreno OpenGLES Android driver.
    // http://anglebug.com/2925
    ANGLE_SKIP_TEST_IF(IsAndroid() && IsAdreno() && IsOpenGLES());

    constexpr char kComputeShaderSource[] = R"(#version 310 es
layout(local_size_x=1, local_size_y=1, local_size_z=1) in;

void atomicCounterInFunction(in atomic_uint counter[3]);

layout(binding = 0, offset = 8) uniform atomic_uint ac[3];

void atomicCounterInFunction(in atomic_uint counter[3])
{
    atomicCounter(counter[0]);
}

void main()
{
    atomicCounterInFunction(ac);
    atomicCounter(ac[gl_LocalInvocationIndex + 1u]);
})";

    ANGLE_GL_COMPUTE_PROGRAM(program, kComputeShaderSource);
    EXPECT_GL_NO_ERROR();
}

// Test atomic counter read.
TEST_P(AtomicCounterBufferTest31, AtomicCounterRead)
{
    // Skipping test while we work on enabling atomic counter buffer support in th D3D renderer.
    // http://anglebug.com/1729
    ANGLE_SKIP_TEST_IF(IsD3D11());

    constexpr char kFS[] =
        "#version 310 es\n"
        "precision highp float;\n"
        "layout(binding = 0, offset = 4) uniform atomic_uint ac;\n"
        "out highp vec4 my_color;\n"
        "void main()\n"
        "{\n"
        "    my_color = vec4(0.0);\n"
        "    uint a1 = atomicCounter(ac);\n"
        "    if (a1 == 3u) my_color = vec4(1.0);\n"
        "}\n";

    ANGLE_GL_PROGRAM(program, essl31_shaders::vs::Simple(), kFS);

    glUseProgram(program.get());

    // The initial value of counter 'ac' is 3u.
    unsigned int bufferData[3] = {11u, 3u, 1u};
    GLBuffer atomicCounterBuffer;
    glBindBuffer(GL_ATOMIC_COUNTER_BUFFER, atomicCounterBuffer);
    glBufferData(GL_ATOMIC_COUNTER_BUFFER, sizeof(bufferData), bufferData, GL_STATIC_DRAW);

    glBindBufferBase(GL_ATOMIC_COUNTER_BUFFER, 0, atomicCounterBuffer);

    drawQuad(program.get(), essl31_shaders::PositionAttrib(), 0.0f);
    ASSERT_GL_NO_ERROR();
    EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::white);
}

// Test a bug in vulkan back-end where recreating the atomic counter storage should trigger state
// update in the context
TEST_P(AtomicCounterBufferTest31, DependentAtomicCounterBufferChange)
{
    // Skipping test while we work on enabling atomic counter buffer support in th D3D renderer.
    // http://anglebug.com/1729
    ANGLE_SKIP_TEST_IF(IsD3D11());

    constexpr char kFS[] =
        "#version 310 es\n"
        "precision highp float;\n"
        "layout(binding = 0, offset = 4) uniform atomic_uint ac;\n"
        "out highp vec4 my_color;\n"
        "void main()\n"
        "{\n"
        "    my_color = vec4(0.0);\n"
        "    uint a1 = atomicCounter(ac);\n"
        "    if (a1 == 3u) my_color = vec4(1.0);\n"
        "    if (a1 == 19u) my_color = vec4(1.0, 0.0, 0.0, 1.0);\n"
        "}\n";

    ANGLE_GL_PROGRAM(program, essl31_shaders::vs::Simple(), kFS);

    glUseProgram(program.get());

    // The initial value of counter 'ac' is 3u.
    unsigned int bufferDataLeft[3] = {11u, 3u, 1u};
    GLBuffer atomicCounterBuffer;
    glBindBuffer(GL_ATOMIC_COUNTER_BUFFER, atomicCounterBuffer);
    glBufferData(GL_ATOMIC_COUNTER_BUFFER, sizeof(bufferDataLeft), bufferDataLeft, GL_STATIC_DRAW);

    glBindBufferBase(GL_ATOMIC_COUNTER_BUFFER, 0, atomicCounterBuffer);
    // Draw left quad
    glViewport(0, 0, getWindowWidth() / 2, getWindowHeight());
    drawQuad(program.get(), essl31_shaders::PositionAttrib(), 0.0f);
    // Draw right quad
    unsigned int bufferDataRight[3] = {11u, 19u, 1u};
    glBufferData(GL_ATOMIC_COUNTER_BUFFER, sizeof(bufferDataRight), bufferDataRight,
                 GL_STATIC_DRAW);
    glViewport(getWindowWidth() / 2, 0, getWindowWidth() / 2, getWindowHeight());
    drawQuad(program.get(), essl31_shaders::PositionAttrib(), 0.0f);
    ASSERT_GL_NO_ERROR();
    EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::white);
    EXPECT_PIXEL_COLOR_EQ(getWindowWidth() / 2, 0, GLColor::red);
}

// Updating atomic counter buffer's offsets was optimized based on a count of valid bindings.
// This test will fail if there are bugs in how we count valid bindings.
TEST_P(AtomicCounterBufferTest31, AtomicCounterBufferRangeRead)
{
    // Skipping due to a bug on the Qualcomm driver.
    // http://anglebug.com/3726
    ANGLE_SKIP_TEST_IF(IsNexus5X() && IsOpenGLES());

    // Skipping test while we work on enabling atomic counter buffer support in th D3D renderer.
    // http://anglebug.com/1729
    ANGLE_SKIP_TEST_IF(IsD3D11());

    constexpr char kFS[] =
        "#version 310 es\n"
        "precision highp float;\n"
        "layout(binding = 0, offset = 4) uniform atomic_uint ac;\n"
        "out highp vec4 my_color;\n"
        "void main()\n"
        "{\n"
        "    my_color = vec4(0.0);\n"
        "    uint a1 = atomicCounter(ac);\n"
        "    if (a1 == 3u) my_color = vec4(1.0);\n"
        "}\n";

    ANGLE_GL_PROGRAM(program, essl31_shaders::vs::Simple(), kFS);

    glUseProgram(program.get());

    // The initial value of counter 'ac' is 3u.
    unsigned int bufferData[]     = {0u, 0u, 0u, 0u, 0u, 11u, 3u, 1u};
    constexpr GLintptr kOffset    = 20;
    GLint maxAtomicCounterBuffers = 0;
    GLBuffer atomicCounterBuffer;

    glGetIntegerv(GL_MAX_COMPUTE_ATOMIC_COUNTER_BUFFERS, &maxAtomicCounterBuffers);
    // Repeatedly bind the same buffer (GL_MAX_COMPUTE_ATOMIC_COUNTER_BUFFERS + 1) times
    // A bug in counting valid atomic counter buffers will cause a crash when we
    // exceed GL_MAX_COMPUTE_ATOMIC_COUNTER_BUFFERS
    for (int32_t i = 0; i < maxAtomicCounterBuffers + 1; i++)
    {
        glBindBuffer(GL_ATOMIC_COUNTER_BUFFER, atomicCounterBuffer);
        glBufferData(GL_ATOMIC_COUNTER_BUFFER, sizeof(bufferData), bufferData, GL_STATIC_DRAW);
        glBindBufferRange(GL_ATOMIC_COUNTER_BUFFER, 0, atomicCounterBuffer, kOffset,
                          sizeof(bufferData) - kOffset);
    }

    drawQuad(program.get(), essl31_shaders::PositionAttrib(), 0.0f);
    ASSERT_GL_NO_ERROR();
    EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::white);
}

// Updating atomic counter buffer's offsets was optimized based on a count of valid bindings.
// Repeatedly bind/unbind buffers across available binding points. The test will fail if
// there are bugs in how we count valid bindings.
TEST_P(AtomicCounterBufferTest31, AtomicCounterBufferRepeatedBindUnbind)
{
    // Skipping test while we work on enabling atomic counter buffer support in th D3D renderer.
    // http://anglebug.com/1729
    ANGLE_SKIP_TEST_IF(IsD3D11());

    constexpr char kFS[] =
        "#version 310 es\n"
        "precision highp float;\n"
        "layout(binding = 0, offset = 4) uniform atomic_uint ac;\n"
        "out highp vec4 my_color;\n"
        "void main()\n"
        "{\n"
        "    my_color = vec4(0.0);\n"
        "    uint a1 = atomicCounter(ac);\n"
        "    if (a1 == 3u) my_color = vec4(1.0);\n"
        "}\n";

    ANGLE_GL_PROGRAM(program, essl31_shaders::vs::Simple(), kFS);

    glUseProgram(program.get());

    constexpr int32_t kBufferCount = 16;
    // The initial value of counter 'ac' is 3u.
    unsigned int bufferData[3] = {11u, 3u, 1u};
    GLBuffer atomicCounterBuffer[kBufferCount];
    // Populate atomicCounterBuffer[0] with valid data and the rest with nullptr
    for (int32_t bufferIndex = 0; bufferIndex < kBufferCount; bufferIndex++)
    {
        glBindBuffer(GL_ATOMIC_COUNTER_BUFFER, atomicCounterBuffer[bufferIndex]);
        glBufferData(GL_ATOMIC_COUNTER_BUFFER, sizeof(bufferData),
                     (bufferIndex == 0) ? bufferData : nullptr, GL_STATIC_DRAW);
    }

    GLint maxAtomicCounterBuffers = 0;
    glGetIntegerv(GL_MAX_COMPUTE_ATOMIC_COUNTER_BUFFERS, &maxAtomicCounterBuffers);

    // Cycle through multiple buffers
    for (int32_t i = 0; i < kBufferCount; i++)
    {
        constexpr int32_t kBufferIndices[kBufferCount] = {7, 12, 15, 5, 13, 14, 1, 2,
                                                          0, 6,  4,  9, 8,  11, 3, 10};
        int32_t bufferIndex                            = kBufferIndices[i];

        // Randomly bind/unbind buffers to/from different binding points,
        // capped by GL_MAX_COMPUTE_ATOMIC_COUNTER_BUFFERS
        for (int32_t bufferCount = 0; bufferCount < maxAtomicCounterBuffers; bufferCount++)
        {
            constexpr uint32_t kBindingSlotsSize                = kBufferCount;
            constexpr uint32_t kBindingSlots[kBindingSlotsSize] = {1,  3,  4, 14, 15, 9, 0, 6,
                                                                   12, 11, 8, 5,  10, 2, 7, 13};

            uint32_t bindingSlotIndex = bufferCount % kBindingSlotsSize;
            uint32_t bindingSlot      = kBindingSlots[bindingSlotIndex];
            uint32_t bindingPoint     = bindingSlot % maxAtomicCounterBuffers;
            bool even                 = (bufferCount % 2 == 0);
            int32_t bufferId          = (even) ? 0 : atomicCounterBuffer[bufferIndex];

            glBindBufferBase(GL_ATOMIC_COUNTER_BUFFER, bindingPoint, bufferId);
        }
    }

    // Bind atomicCounterBuffer[0] to slot 0 and verify result
    glBindBufferBase(GL_ATOMIC_COUNTER_BUFFER, 0, atomicCounterBuffer[0]);
    drawQuad(program.get(), essl31_shaders::PositionAttrib(), 0.0f);
    ASSERT_GL_NO_ERROR();
    EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::white);
}

// Test atomic counter increment and decrement.
TEST_P(AtomicCounterBufferTest31, AtomicCounterIncrementAndDecrement)
{
    constexpr char kCS[] =
        "#version 310 es\n"
        "layout(local_size_x=1, local_size_y=1, local_size_z=1) in;\n"
        "layout(binding = 0, offset = 4) uniform atomic_uint ac[2];\n"
        "void main()\n"
        "{\n"
        "    atomicCounterIncrement(ac[0]);\n"
        "    atomicCounterDecrement(ac[1]);\n"
        "}\n";

    ANGLE_GL_COMPUTE_PROGRAM(program, kCS);

    glUseProgram(program.get());

    // The initial value of 'ac[0]' is 3u, 'ac[1]' is 1u.
    unsigned int bufferData[3] = {11u, 3u, 1u};
    GLBuffer atomicCounterBuffer;
    glBindBuffer(GL_ATOMIC_COUNTER_BUFFER, atomicCounterBuffer);
    glBufferData(GL_ATOMIC_COUNTER_BUFFER, sizeof(bufferData), bufferData, GL_STATIC_DRAW);

    glBindBufferBase(GL_ATOMIC_COUNTER_BUFFER, 0, atomicCounterBuffer);

    glDispatchCompute(1, 1, 1);
    EXPECT_GL_NO_ERROR();

    glMemoryBarrier(GL_BUFFER_UPDATE_BARRIER_BIT);

    glBindBuffer(GL_ATOMIC_COUNTER_BUFFER, atomicCounterBuffer);
    void *mappedBuffer =
        glMapBufferRange(GL_ATOMIC_COUNTER_BUFFER, 0, sizeof(GLuint) * 3, GL_MAP_READ_BIT);
    memcpy(bufferData, mappedBuffer, sizeof(bufferData));
    glUnmapBuffer(GL_ATOMIC_COUNTER_BUFFER);

    EXPECT_EQ(11u, bufferData[0]);
    EXPECT_EQ(4u, bufferData[1]);
    EXPECT_EQ(0u, bufferData[2]);
}

// Tests multiple atomic counter buffers.
TEST_P(AtomicCounterBufferTest31, AtomicCounterMultipleBuffers)
{
    GLint maxAtomicCounterBuffers = 0;
    glGetIntegerv(GL_MAX_COMPUTE_ATOMIC_COUNTER_BUFFERS, &maxAtomicCounterBuffers);
    constexpr unsigned int kBufferCount = 3;
    // ES 3.1 table 20.45 only guarantees 1 atomic counter buffer
    ANGLE_SKIP_TEST_IF(maxAtomicCounterBuffers < static_cast<int>(kBufferCount));

    constexpr char kComputeShaderSource[] = R"(#version 310 es
layout(local_size_x=1, local_size_y=1, local_size_z=1) in;
layout(binding = 0) uniform atomic_uint ac1;
layout(binding = 1) uniform atomic_uint ac2;
layout(binding = 2) uniform atomic_uint ac3;

void main()
{
    atomicCounterIncrement(ac1);
    atomicCounterIncrement(ac2);
    atomicCounterIncrement(ac3);
})";

    ANGLE_GL_COMPUTE_PROGRAM(program, kComputeShaderSource);

    glUseProgram(program);

    GLBuffer atomicCounterBuffers[kBufferCount];

    for (unsigned int ii = 0; ii < kBufferCount; ++ii)
    {
        GLuint initialData[1] = {ii};
        glBindBuffer(GL_ATOMIC_COUNTER_BUFFER, atomicCounterBuffers[ii]);
        glBufferData(GL_ATOMIC_COUNTER_BUFFER, sizeof(initialData), initialData, GL_STATIC_DRAW);

        glBindBufferBase(GL_ATOMIC_COUNTER_BUFFER, ii, atomicCounterBuffers[ii]);
    }

    glDispatchCompute(1, 1, 1);
    EXPECT_GL_NO_ERROR();

    glMemoryBarrier(GL_BUFFER_UPDATE_BARRIER_BIT);

    for (unsigned int ii = 0; ii < kBufferCount; ++ii)
    {
        glBindBuffer(GL_ATOMIC_COUNTER_BUFFER, atomicCounterBuffers[ii]);
        GLuint *mappedBuffer = static_cast<GLuint *>(
            glMapBufferRange(GL_ATOMIC_COUNTER_BUFFER, 0, sizeof(GLuint), GL_MAP_READ_BIT));
        EXPECT_EQ(ii + 1, mappedBuffer[0]);
        glUnmapBuffer(GL_ATOMIC_COUNTER_BUFFER);
    }
}

// Test atomic counter array of array.
TEST_P(AtomicCounterBufferTest31, AtomicCounterArrayOfArray)
{
    // Fails on D3D.  Some counters are double-incremented while some are untouched, hinting at a
    // bug in index translation.  http://anglebug.com/3783
    ANGLE_SKIP_TEST_IF(IsD3D11());

    // Nvidia's OpenGL driver fails to compile the shader.  http://anglebug.com/3791
    ANGLE_SKIP_TEST_IF(IsOpenGL() && IsNVIDIA());

    // Intel's Windows OpenGL driver crashes in this test.  http://anglebug.com/3791
    ANGLE_SKIP_TEST_IF(IsOpenGL() && IsIntel() && IsWindows());

    constexpr char kCS[] = R"(#version 310 es
layout(local_size_x=1, local_size_y=1, local_size_z=1) in;
layout(binding = 0) uniform atomic_uint ac[7][5][3];

void f0(in atomic_uint ac)
{
    atomicCounterIncrement(ac);
}

void f1(in atomic_uint ac[3])
{
    atomicCounterIncrement(ac[0]);
    f0(ac[1]);
    int index = 2;
    f0(ac[index]);
}

void f2(in atomic_uint ac[5][3])
{
    // Increment all in ac[0], ac[1] and ac[2]
    for (int i = 0; i < 3; ++i)
    {
        for (int j = 0; j < 2; ++j)
        {
            f0(ac[i][j]);
        }
        f0(ac[i][2]);
    }

    // Increment all in ac[3]
    f1(ac[3]);

    // Increment all in ac[4]
    for (int i = 0; i < 2; ++i)
    {
        atomicCounterIncrement(ac[4][i]);
    }
    f0(ac[4][2]);
}

void f3(in atomic_uint ac[7][5][3])
{
    // Increment all in ac[0], ac[1], ac[2] and ac[3]
    f2(ac[0]);
    for (int i = 1; i < 4; ++i)
    {
        f2(ac[i]);
    }

    // Increment all in ac[5][0], ac[5][1], ac[5][2] and ac[5][3]
    for (int i = 0; i < 4; ++i)
    {
        f1(ac[5][i]);
    }

    // Increment all in ac[5][4][0], ac[5][4][1] and ac[5][4][2]
    f0(ac[5][4][0]);
    for (int i = 1; i < 3; ++i)
    {
        f0(ac[5][4][i]);
    }

    // Increment all in ac[6]
    for (int i = 0; i < 5; ++i)
    {
        for (int j = 0; j < 2; ++j)
        {
            atomicCounterIncrement(ac[6][i][j]);
        }
        atomicCounterIncrement(ac[6][i][2]);
    }
}

void main()
{
    // Increment all in ac except ac[4]
    f3(ac);

    // Increment all in ac[4]
    f2(ac[4]);
})";

    constexpr uint32_t kAtomicCounterRows  = 7;
    constexpr uint32_t kAtomicCounterCols  = 5;
    constexpr uint32_t kAtomicCounterDepth = 3;
    constexpr uint32_t kAtomicCounterCount =
        kAtomicCounterRows * kAtomicCounterCols * kAtomicCounterDepth;

    GLint maxAtomicCounters = 0;
    glGetIntegerv(GL_MAX_COMPUTE_ATOMIC_COUNTERS, &maxAtomicCounters);
    EXPECT_GL_NO_ERROR();

    // Required minimum is 8 by the spec
    EXPECT_GE(maxAtomicCounters, 8);
    ANGLE_SKIP_TEST_IF(static_cast<uint32_t>(maxAtomicCounters) < kAtomicCounterCount);

    ANGLE_GL_COMPUTE_PROGRAM(program, kCS);
    glUseProgram(program.get());

    // The initial value of atomic counters is 0, 1, 2, ...
    unsigned int bufferData[kAtomicCounterCount] = {};
    for (uint32_t index = 0; index < kAtomicCounterCount; ++index)
    {
        bufferData[index] = index;
    }

    GLBuffer atomicCounterBuffer;
    glBindBuffer(GL_ATOMIC_COUNTER_BUFFER, atomicCounterBuffer);
    glBufferData(GL_ATOMIC_COUNTER_BUFFER, sizeof(bufferData), bufferData, GL_STATIC_DRAW);

    glBindBufferBase(GL_ATOMIC_COUNTER_BUFFER, 0, atomicCounterBuffer);

    glDispatchCompute(1, 1, 1);
    EXPECT_GL_NO_ERROR();

    glMemoryBarrier(GL_BUFFER_UPDATE_BARRIER_BIT);

    unsigned int result[kAtomicCounterCount] = {};
    glBindBuffer(GL_ATOMIC_COUNTER_BUFFER, atomicCounterBuffer);
    void *mappedBuffer =
        glMapBufferRange(GL_ATOMIC_COUNTER_BUFFER, 0, sizeof(bufferData), GL_MAP_READ_BIT);
    memcpy(result, mappedBuffer, sizeof(bufferData));
    glUnmapBuffer(GL_ATOMIC_COUNTER_BUFFER);

    for (uint32_t index = 0; index < kAtomicCounterCount; ++index)
    {
        EXPECT_EQ(result[index], bufferData[index] + 1) << "index " << index;
    }
}

// Test inactive atomic counter
TEST_P(AtomicCounterBufferTest31, AtomicCounterInactive)
{
    constexpr char kFS[] =
        "#version 310 es\n"
        "precision highp float;\n"

        // This inactive atomic counter should be removed by RemoveInactiveInterfaceVariables
        "layout(binding = 0) uniform atomic_uint inactive;\n"

        "out highp vec4 my_color;\n"
        "void main()\n"
        "{\n"
        "    my_color = vec4(0.0, 1.0, 0.0, 1.0);\n"
        "}\n";

    ANGLE_GL_PROGRAM(program, essl31_shaders::vs::Simple(), kFS);
    glUseProgram(program);

    drawQuad(program, essl31_shaders::PositionAttrib(), 0.0f);
    ASSERT_GL_NO_ERROR();

    EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::green);
}

// Test inactive memoryBarrierAtomicCounter
TEST_P(AtomicCounterBufferTest31, AtomicCounterMemoryBarrier)
{
    constexpr char kFS[] =
        "#version 310 es\n"
        "precision highp float;\n"
        // This inactive atomic counter should be removed by RemoveInactiveInterfaceVariables
        "layout(binding = 0) uniform atomic_uint inactive;\n"
        "out highp vec4 my_color;\n"
        "void main()\n"
        "{\n"
        "    my_color = vec4(0.0, 1.0, 0.0, 1.0);\n"
        // This barrier should be removed by RemoveAtomicCounterBuiltins because
        // there are no active atomic counters
        "    memoryBarrierAtomicCounter();\n"
        "}\n";

    ANGLE_GL_PROGRAM(program, essl31_shaders::vs::Simple(), kFS);
    glUseProgram(program);

    drawQuad(program, essl31_shaders::PositionAttrib(), 0.0f);
    ASSERT_GL_NO_ERROR();

    EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::green);
}

GTEST_ALLOW_UNINSTANTIATED_PARAMETERIZED_TEST(AtomicCounterBufferTest);
GTEST_ALLOW_UNINSTANTIATED_PARAMETERIZED_TEST(AtomicCounterBufferTest31);
ANGLE_INSTANTIATE_TEST_ES3_AND_ES31(AtomicCounterBufferTest);
ANGLE_INSTANTIATE_TEST_ES31_AND(AtomicCounterBufferTest31,
                                WithDirectSPIRVGeneration(ES31_VULKAN()));

}  // namespace
kc3-lang/angle/src/tests/gl_tests/AtomicCounterBufferTest.cpp

Commit

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