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//
// Copyright (c) 2016 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.
//
// TexturesPerf:
// Performance test for setting texture state.
//
#include "ANGLEPerfTest.h"
#include <iostream>
#include <random>
#include <sstream>
#include "shader_utils.h"
namespace angle
{
struct TexturesParams final : public RenderTestParams
{
TexturesParams()
{
// Common default params
majorVersion = 2;
minorVersion = 0;
windowWidth = 720;
windowHeight = 720;
iterations = 256;
numTextures = 8;
textureRebindFrequency = 5;
textureStateUpdateFrequency = 3;
textureMipCount = 8;
}
std::string suffix() const override;
size_t numTextures;
size_t textureRebindFrequency;
size_t textureStateUpdateFrequency;
size_t textureMipCount;
// static parameters
size_t iterations;
};
std::ostream &operator<<(std::ostream &os, const TexturesParams &params)
{
os << params.suffix().substr(1);
return os;
}
std::string TexturesParams::suffix() const
{
std::stringstream strstr;
strstr << RenderTestParams::suffix();
strstr << "_" << numTextures << "_textures";
strstr << "_" << textureRebindFrequency << "_rebind";
strstr << "_" << textureStateUpdateFrequency << "_state";
strstr << "_" << textureMipCount << "_mips";
return strstr.str();
}
class TexturesBenchmark : public ANGLERenderTest,
public ::testing::WithParamInterface<TexturesParams>
{
public:
TexturesBenchmark();
void initializeBenchmark() override;
void destroyBenchmark() override;
void drawBenchmark() override;
private:
void initShaders();
void initTextures();
std::vector<GLuint> mTextures;
GLuint mProgram;
std::vector<GLuint> mUniformLocations;
};
TexturesBenchmark::TexturesBenchmark() : ANGLERenderTest("Textures", GetParam()), mProgram(0u)
{
}
void TexturesBenchmark::initializeBenchmark()
{
const auto &params = GetParam();
ASSERT_GT(params.iterations, 0u);
// Verify the uniform counts are within the limits
GLint maxTextureUnits;
glGetIntegerv(GL_MAX_TEXTURE_IMAGE_UNITS, &maxTextureUnits);
if (params.numTextures > static_cast<size_t>(maxTextureUnits))
{
FAIL() << "Texture count (" << params.numTextures << ")"
<< " exceeds maximum texture unit count: " << maxTextureUnits << std::endl;
}
initShaders();
initTextures();
glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
glViewport(0, 0, getWindow()->getWidth(), getWindow()->getHeight());
ASSERT_GL_NO_ERROR();
}
std::string GetUniformLocationName(size_t idx, bool vertexShader)
{
std::stringstream strstr;
strstr << (vertexShader ? "vs" : "fs") << "_u_" << idx;
return strstr.str();
}
void TexturesBenchmark::initShaders()
{
const auto &params = GetParam();
std::string vs =
"void main()\n"
"{\n"
" gl_Position = vec4(0, 0, 0, 0);\n"
"}\n";
std::stringstream fstrstr;
for (size_t i = 0; i < params.numTextures; i++)
{
fstrstr << "uniform sampler2D tex" << i << ";";
}
fstrstr << "void main()\n"
"{\n"
" gl_FragColor = vec4(0, 0, 0, 0)";
for (size_t i = 0; i < params.numTextures; i++)
{
fstrstr << "+ texture2D(tex" << i << ", vec2(0, 0))";
}
fstrstr << ";\n"
"}\n";
mProgram = CompileProgram(vs, fstrstr.str());
ASSERT_NE(0u, mProgram);
for (size_t i = 0; i < params.numTextures; ++i)
{
std::stringstream uniformName;
uniformName << "tex" << i;
GLint location = glGetUniformLocation(mProgram, uniformName.str().c_str());
ASSERT_NE(-1, location);
mUniformLocations.push_back(location);
}
// Use the program object
glUseProgram(mProgram);
}
void TexturesBenchmark::initTextures()
{
const auto &params = GetParam();
size_t textureSize = static_cast<size_t>(1) << params.textureMipCount;
std::vector<GLubyte> textureData(textureSize * textureSize * 4);
for (auto &byte : textureData)
{
byte = rand() % 255u;
}
for (size_t texIndex = 0; texIndex < params.numTextures; texIndex++)
{
GLuint tex = 0;
glGenTextures(1, &tex);
glActiveTexture(static_cast<GLenum>(GL_TEXTURE0 + texIndex));
glBindTexture(GL_TEXTURE_2D, tex);
for (size_t mip = 0; mip < params.textureMipCount; mip++)
{
GLsizei levelSize = static_cast<GLsizei>(textureSize >> mip);
glTexImage2D(GL_TEXTURE_2D, static_cast<GLint>(mip), GL_RGBA, levelSize, levelSize, 0,
GL_RGBA, GL_UNSIGNED_BYTE, textureData.data());
}
mTextures.push_back(tex);
glUniform1i(mUniformLocations[texIndex], static_cast<GLint>(texIndex));
}
}
void TexturesBenchmark::destroyBenchmark()
{
glDeleteProgram(mProgram);
}
void TexturesBenchmark::drawBenchmark()
{
const auto &params = GetParam();
for (size_t it = 0; it < params.iterations; ++it)
{
if (it % params.textureRebindFrequency == 0)
{
// Swap two textures
size_t swapTexture = (it / params.textureRebindFrequency) % (params.numTextures - 1);
glActiveTexture(static_cast<GLenum>(GL_TEXTURE0 + swapTexture));
glBindTexture(GL_TEXTURE_2D, mTextures[swapTexture]);
glActiveTexture(static_cast<GLenum>(GL_TEXTURE0 + swapTexture + 1));
glBindTexture(GL_TEXTURE_2D, mTextures[swapTexture + 1]);
std::swap(mTextures[swapTexture], mTextures[swapTexture + 1]);
}
if (it % params.textureStateUpdateFrequency == 0)
{
// Update a texture's state
size_t stateUpdateCount = it / params.textureStateUpdateFrequency;
const size_t numUpdateTextures = 4;
ASSERT_LE(numUpdateTextures, params.numTextures);
size_t firstTexture = stateUpdateCount % (params.numTextures - numUpdateTextures);
for (size_t updateTextureIdx = 0; updateTextureIdx < numUpdateTextures;
updateTextureIdx++)
{
size_t updateTexture = firstTexture + updateTextureIdx;
glActiveTexture(static_cast<GLenum>(GL_TEXTURE0 + updateTexture));
const GLenum minFilters[] = {
GL_NEAREST,
GL_LINEAR,
GL_NEAREST_MIPMAP_NEAREST,
GL_LINEAR_MIPMAP_NEAREST,
GL_NEAREST_MIPMAP_LINEAR,
GL_LINEAR_MIPMAP_LINEAR,
};
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
minFilters[stateUpdateCount % ArraySize(minFilters)]);
const GLenum magFilters[] = {
GL_NEAREST, GL_LINEAR,
};
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER,
magFilters[stateUpdateCount % ArraySize(magFilters)]);
const GLenum wrapParameters[] = {
GL_CLAMP_TO_EDGE, GL_REPEAT, GL_MIRRORED_REPEAT,
};
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S,
wrapParameters[stateUpdateCount % ArraySize(wrapParameters)]);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T,
wrapParameters[stateUpdateCount % ArraySize(wrapParameters)]);
}
}
glDrawArrays(GL_TRIANGLES, 0, 3);
}
ASSERT_GL_NO_ERROR();
}
TexturesParams D3D11Params()
{
TexturesParams params;
params.eglParameters = egl_platform::D3D11_NULL();
return params;
}
TexturesParams D3D9Params()
{
TexturesParams params;
params.eglParameters = egl_platform::D3D9_NULL();
return params;
}
TexturesParams OpenGLParams()
{
TexturesParams params;
params.eglParameters = egl_platform::OPENGL_NULL();
return params;
}
TEST_P(TexturesBenchmark, Run)
{
run();
}
ANGLE_INSTANTIATE_TEST(TexturesBenchmark, D3D11Params(), D3D9Params(), OpenGLParams());
} // namespace angle