BufferSubData.cpp

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Author : Corentin Wallez
Date : 2015-07-22 14:10:19
Hash : f3357ee2
Message : EGLWindow: remove the unused width and height EGLWindow does nothing with it per se, but some code was relying on it to store it. Add width and height to ANGLETest and SampleApplication instead. Also fix a typo in PerfTestParams, widowWidth -> windowWidth. BUG=angleproject:1105 Change-Id: I26da607a2e6342864b508a50ee3cf8944608f868 Reviewed-on: https://chromium-review.googlesource.com/287379 Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org> Tested-by: Corentin Wallez <cwallez@chromium.org>
src/tests/perf_tests/BufferSubData.cpp
//
// Copyright (c) 2014 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.
//
// BufferSubDataBenchmark:
//   Performance test for ANGLE buffer updates.
//

#include <sstream>

#include "ANGLEPerfTest.h"
#include "shader_utils.h"

using namespace angle;

namespace
{

struct BufferSubDataParams final : public RenderTestParams
{
    BufferSubDataParams()
    {
        // Common default values
        majorVersion = 2;
        minorVersion = 0;
        windowWidth = 512;
        windowHeight = 512;
        updateSize = 3000;
        bufferSize = 40000000;
        iterations = 2;
        updateRate = 1;
    }

    std::string suffix() const override;

    GLboolean vertexNormalized;
    GLenum vertexType;
    GLint vertexComponentCount;
    unsigned int updateRate;

    // static parameters
    GLsizeiptr updateSize;
    GLsizeiptr bufferSize;
    unsigned int iterations;
};

inline std::ostream &operator<<(std::ostream &os, const BufferSubDataParams &params)
{
    os << params.suffix().substr(1);
    return os;
}

class BufferSubDataBenchmark : public ANGLERenderTest,
                               public ::testing::WithParamInterface<BufferSubDataParams>
{
  public:
    BufferSubDataBenchmark();

    void initializeBenchmark() override;
    void destroyBenchmark() override;
    void beginDrawBenchmark() override;
    void drawBenchmark() override;

  private:
    GLuint mProgram;
    GLuint mBuffer;
    uint8_t *mUpdateData;
    int mNumTris;
};

GLfloat *GetFloatData(GLint componentCount)
{
    static GLfloat vertices2[] =
    {
        1, 2,
        0, 0,
        2, 0,
    };

    static GLfloat vertices3[] =
    {
        1, 2, 1,
        0, 0, 1,
        2, 0, 1,
    };

    static GLfloat vertices4[] =
    {
        1, 2, 1, 3,
        0, 0, 1, 3,
        2, 0, 1, 3,
    };

    switch (componentCount)
    {
      case 2: return vertices2;
      case 3: return vertices3;
      case 4: return vertices4;
      default: return NULL;
    }
}

template <class T>
GLsizeiptr GetNormalizedData(GLsizeiptr numElements, GLfloat *floatData, std::vector<uint8_t> *data)
{
    GLsizeiptr triDataSize = sizeof(T) * numElements;
    data->resize(triDataSize);

    T *destPtr = reinterpret_cast<T*>(data->data());

    for (GLsizeiptr dataIndex = 0; dataIndex < numElements; dataIndex++)
    {
        GLfloat scaled = floatData[dataIndex] * 0.25f;
        destPtr[dataIndex] = static_cast<T>(scaled * static_cast<GLfloat>(std::numeric_limits<T>::max()));
    }

    return triDataSize;
}

template <class T>
GLsizeiptr GetIntData(GLsizeiptr numElements, GLfloat *floatData, std::vector<uint8_t> *data)
{
    GLsizeiptr triDataSize = sizeof(T) * numElements;
    data->resize(triDataSize);

    T *destPtr = reinterpret_cast<T*>(data->data());

    for (GLsizeiptr dataIndex = 0; dataIndex < numElements; dataIndex++)
    {
        destPtr[dataIndex] = static_cast<T>(floatData[dataIndex]);
    }

    return triDataSize;
}

GLsizeiptr GetVertexData(GLenum type, GLint componentCount, GLboolean normalized, std::vector<uint8_t> *data)
{
    GLsizeiptr triDataSize = 0;
    GLfloat *floatData = GetFloatData(componentCount);

    if (type == GL_FLOAT)
    {
        triDataSize = sizeof(GLfloat) * componentCount * 3;
        data->resize(triDataSize);
        memcpy(data->data(), floatData, triDataSize);
    }
    else if (normalized == GL_TRUE)
    {
        GLsizeiptr numElements = componentCount * 3;

        switch (type)
        {
          case GL_BYTE:           triDataSize = GetNormalizedData<GLbyte>(numElements, floatData, data); break;
          case GL_SHORT:          triDataSize = GetNormalizedData<GLshort>(numElements, floatData, data); break;
          case GL_INT:            triDataSize = GetNormalizedData<GLint>(numElements, floatData, data); break;
          case GL_UNSIGNED_BYTE:  triDataSize = GetNormalizedData<GLubyte>(numElements, floatData, data); break;
          case GL_UNSIGNED_SHORT: triDataSize = GetNormalizedData<GLushort>(numElements, floatData, data); break;
          case GL_UNSIGNED_INT:   triDataSize = GetNormalizedData<GLuint>(numElements, floatData, data); break;
          default: assert(0);
        }
    }
    else
    {
        GLsizeiptr numElements = componentCount * 3;

        switch (type)
        {
          case GL_BYTE:           triDataSize = GetIntData<GLbyte>(numElements, floatData, data); break;
          case GL_SHORT:          triDataSize = GetIntData<GLshort>(numElements, floatData, data); break;
          case GL_INT:            triDataSize = GetIntData<GLint>(numElements, floatData, data); break;
          case GL_UNSIGNED_BYTE:  triDataSize = GetIntData<GLubyte>(numElements, floatData, data); break;
          case GL_UNSIGNED_SHORT: triDataSize = GetIntData<GLushort>(numElements, floatData, data); break;
          case GL_UNSIGNED_INT:   triDataSize = GetIntData<GLuint>(numElements, floatData, data); break;
          default: assert(0);
        }
    }

    return triDataSize;
}

std::string BufferSubDataParams::suffix() const
{
    std::stringstream strstr;

    strstr << RenderTestParams::suffix();

    if (vertexNormalized)
    {
        strstr << "_norm";
    }

    switch (vertexType)
    {
      case GL_FLOAT: strstr << "_float"; break;
      case GL_INT: strstr << "_int"; break;
      case GL_BYTE: strstr << "_byte"; break;
      case GL_SHORT: strstr << "_short"; break;
      case GL_UNSIGNED_INT: strstr << "_uint"; break;
      case GL_UNSIGNED_BYTE: strstr << "_ubyte"; break;
      case GL_UNSIGNED_SHORT: strstr << "_ushort"; break;
      default: strstr << "_vunk_" << vertexType << "_"; break;
    }

    strstr << vertexComponentCount;
    strstr << "_every" << updateRate;

    return strstr.str();
}

BufferSubDataBenchmark::BufferSubDataBenchmark()
    : ANGLERenderTest("BufferSubData", GetParam()),
      mProgram(0),
      mBuffer(0),
      mUpdateData(NULL),
      mNumTris(0)
{
}

void BufferSubDataBenchmark::initializeBenchmark()
{
    const auto &params = GetParam();

    ASSERT_TRUE(params.vertexComponentCount > 1);
    ASSERT_TRUE(params.iterations > 0);
    mDrawIterations = params.iterations;

    const std::string vs = SHADER_SOURCE
    (
        attribute vec2 vPosition;
        uniform float uScale;
        uniform float uOffset;
        void main()
        {
            gl_Position = vec4(vPosition * vec2(uScale) - vec2(uOffset), 0, 1);
        }
    );

    const std::string fs = SHADER_SOURCE
    (
        precision mediump float;
        void main()
        {
            gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0);
        }
    );

    mProgram = CompileProgram(vs, fs);
    ASSERT_TRUE(mProgram != 0);

    // Use the program object
    glUseProgram(mProgram);

    glClearColor(0.0f, 0.0f, 0.0f, 0.0f);


    std::vector<uint8_t> zeroData(params.bufferSize);
    memset(&zeroData[0], 0, zeroData.size());

    glGenBuffers(1, &mBuffer);
    glBindBuffer(GL_ARRAY_BUFFER, mBuffer);
    glBufferData(GL_ARRAY_BUFFER, params.bufferSize, &zeroData[0], GL_DYNAMIC_DRAW);

    glVertexAttribPointer(0, params.vertexComponentCount, params.vertexType,
                          params.vertexNormalized, 0, 0);
    glEnableVertexAttribArray(0);

    if (params.updateSize > 0)
    {
        mUpdateData = new uint8_t[params.updateSize];
    }

    std::vector<uint8_t> data;
    GLsizei triDataSize = static_cast<GLsizei>(GetVertexData(params.vertexType,
                                                             params.vertexComponentCount,
                                                             params.vertexNormalized, &data));

    mNumTris = static_cast<int>(params.updateSize / triDataSize);
    for (int i = 0, offset = 0; i < mNumTris; ++i)
    {
        memcpy(mUpdateData + offset, &data[0], triDataSize);
        offset += triDataSize;
    }

    if (params.updateSize == 0)
    {
        mNumTris = 1;
        glBufferSubData(GL_ARRAY_BUFFER, 0, data.size(), &data[0]);
    }

    // Set the viewport
    glViewport(0, 0, getWindow()->getWidth(), getWindow()->getHeight());

    GLfloat scale = 0.5f;
    GLfloat offset = 0.5f;

    if (params.vertexNormalized == GL_TRUE)
    {
        scale = 2.0f;
        offset = 0.5f;
    }

    glUniform1f(glGetUniformLocation(mProgram, "uScale"), scale);
    glUniform1f(glGetUniformLocation(mProgram, "uOffset"), offset);

    ASSERT_GL_NO_ERROR();
}

void BufferSubDataBenchmark::destroyBenchmark()
{
    glDeleteProgram(mProgram);
    glDeleteBuffers(1, &mBuffer);
    SafeDeleteArray(mUpdateData);
}

void BufferSubDataBenchmark::beginDrawBenchmark()
{
    // Clear the color buffer
    glClear(GL_COLOR_BUFFER_BIT);
}

void BufferSubDataBenchmark::drawBenchmark()
{
    const auto &params = GetParam();

    for (unsigned int it = 0; it < params.iterations; it++)
    {
        if (params.updateSize > 0 && ((mNumFrames % params.updateRate) == 0))
        {
            glBufferSubData(GL_ARRAY_BUFFER, 0, params.updateSize, mUpdateData);
        }

        glDrawArrays(GL_TRIANGLES, 0, 3 * mNumTris);
    }

    ASSERT_GL_NO_ERROR();
}

BufferSubDataParams BufferUpdateD3D11Params()
{
    BufferSubDataParams params;
    params.eglParameters = egl_platform::D3D11();
    params.vertexType = GL_FLOAT;
    params.vertexComponentCount = 4;
    params.vertexNormalized = GL_FALSE;
    return params;
}

BufferSubDataParams BufferUpdateD3D9Params()
{
    BufferSubDataParams params;
    params.eglParameters = egl_platform::D3D9();
    params.vertexType = GL_FLOAT;
    params.vertexComponentCount = 4;
    params.vertexNormalized = GL_FALSE;
    return params;
}

BufferSubDataParams BufferUpdateOpenGLParams()
{
    BufferSubDataParams params;
    params.eglParameters = egl_platform::OPENGL();
    params.vertexType = GL_FLOAT;
    params.vertexComponentCount = 4;
    params.vertexNormalized = GL_FALSE;
    return params;
}

TEST_P(BufferSubDataBenchmark, Run)
{
    run();
}

ANGLE_INSTANTIATE_TEST(BufferSubDataBenchmark,
                       BufferUpdateD3D11Params(), BufferUpdateD3D9Params(),
                       BufferUpdateOpenGLParams());

} // namespace
kc3-lang/angle/src/tests/perf_tests/BufferSubData.cpp

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kc3-lang/angle /src/tests/perf_tests/BufferSubData.cpp
