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//
// Copyright 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.
//
// DrawCallPerf:
// Performance tests for ANGLE draw call overhead.
//
#include "ANGLEPerfTest.h"
#include "DrawCallPerfParams.h"
#include "test_utils/draw_call_perf_utils.h"
#include "util/shader_utils.h"
namespace
{
enum class StateChange
{
NoChange,
VertexAttrib,
VertexBuffer,
ManyVertexBuffers,
Texture,
};
struct DrawArraysPerfParams : public DrawCallPerfParams
{
DrawArraysPerfParams(const DrawCallPerfParams &base) : DrawCallPerfParams(base) {}
std::string story() const override;
StateChange stateChange = StateChange::NoChange;
};
std::string DrawArraysPerfParams::story() const
{
std::stringstream strstr;
strstr << DrawCallPerfParams::story();
switch (stateChange)
{
case StateChange::VertexAttrib:
strstr << "_attrib_change";
break;
case StateChange::VertexBuffer:
strstr << "_vbo_change";
break;
case StateChange::ManyVertexBuffers:
strstr << "_manyvbos_change";
break;
case StateChange::Texture:
strstr << "_tex_change";
break;
default:
break;
}
return strstr.str();
}
std::ostream &operator<<(std::ostream &os, const DrawArraysPerfParams &params)
{
os << params.backendAndStory().substr(1);
return os;
}
GLuint CreateSimpleTexture2D()
{
// Use tightly packed data
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
// Generate a texture object
GLuint texture;
glGenTextures(1, &texture);
// Bind the texture object
glBindTexture(GL_TEXTURE_2D, texture);
// Load the texture: 2x2 Image, 3 bytes per pixel (R, G, B)
constexpr size_t width = 2;
constexpr size_t height = 2;
GLubyte pixels[width * height * 3] = {
255, 0, 0, // Red
0, 255, 0, // Green
0, 0, 255, // Blue
255, 255, 0, // Yellow
};
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, pixels);
// Set the filtering mode
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
return texture;
}
class DrawCallPerfBenchmark : public ANGLERenderTest,
public ::testing::WithParamInterface<DrawArraysPerfParams>
{
public:
DrawCallPerfBenchmark();
void initializeBenchmark() override;
void destroyBenchmark() override;
void drawBenchmark() override;
private:
GLuint mProgram = 0;
GLuint mBuffer1 = 0;
GLuint mBuffer2 = 0;
GLuint mFBO = 0;
GLuint mFBOTexture = 0;
GLuint mTexture1 = 0;
GLuint mTexture2 = 0;
int mNumTris = GetParam().numTris;
};
DrawCallPerfBenchmark::DrawCallPerfBenchmark() : ANGLERenderTest("DrawCallPerf", GetParam()) {}
void DrawCallPerfBenchmark::initializeBenchmark()
{
const auto &params = GetParam();
if (params.stateChange == StateChange::Texture)
{
mProgram = SetupSimpleTextureProgram();
}
else if (params.stateChange == StateChange::ManyVertexBuffers)
{
constexpr char kVS[] = R"(attribute vec2 vPosition;
attribute vec2 v0;
attribute vec2 v1;
attribute vec2 v2;
attribute vec2 v3;
const float scale = 0.5;
const float offset = -0.5;
varying vec2 v;
void main()
{
gl_Position = vec4(vPosition * vec2(scale) + vec2(offset), 0, 1);
v = (v0 + v1 + v2 + v3) * 0.25;
})";
constexpr char kFS[] = R"(precision mediump float;
varying vec2 v;
void main()
{
gl_FragColor = vec4(v, 0, 1);
})";
mProgram = CompileProgram(kVS, kFS);
glBindAttribLocation(mProgram, 1, "v0");
glBindAttribLocation(mProgram, 2, "v1");
glBindAttribLocation(mProgram, 3, "v2");
glBindAttribLocation(mProgram, 4, "v3");
glEnableVertexAttribArray(1);
glEnableVertexAttribArray(2);
glEnableVertexAttribArray(3);
glEnableVertexAttribArray(4);
}
else
{
mProgram = SetupSimpleDrawProgram();
}
ASSERT_NE(0u, mProgram);
// Re-link program to ensure the attrib bindings are used.
glBindAttribLocation(mProgram, 0, "vPosition");
glLinkProgram(mProgram);
glUseProgram(mProgram);
glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
mBuffer1 = Create2DTriangleBuffer(mNumTris, GL_STATIC_DRAW);
mBuffer2 = Create2DTriangleBuffer(mNumTris, GL_STATIC_DRAW);
glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 0, 0);
glEnableVertexAttribArray(0);
// Set the viewport
glViewport(0, 0, getWindow()->getWidth(), getWindow()->getHeight());
if (params.offscreen)
{
CreateColorFBO(getWindow()->getWidth(), getWindow()->getHeight(), &mFBOTexture, &mFBO);
}
mTexture1 = CreateSimpleTexture2D();
mTexture2 = CreateSimpleTexture2D();
ASSERT_GL_NO_ERROR();
}
void DrawCallPerfBenchmark::destroyBenchmark()
{
glDeleteProgram(mProgram);
glDeleteBuffers(1, &mBuffer1);
glDeleteBuffers(1, &mBuffer2);
glDeleteTextures(1, &mFBOTexture);
glDeleteTextures(1, &mTexture1);
glDeleteTextures(1, &mTexture2);
glDeleteFramebuffers(1, &mFBO);
}
void ClearThenDraw(unsigned int iterations, GLsizei numElements)
{
glClear(GL_COLOR_BUFFER_BIT);
for (unsigned int it = 0; it < iterations; it++)
{
glDrawArrays(GL_TRIANGLES, 0, numElements);
}
}
void JustDraw(unsigned int iterations, GLsizei numElements)
{
for (unsigned int it = 0; it < iterations; it++)
{
glDrawArrays(GL_TRIANGLES, 0, numElements);
}
}
template <int kArrayBufferCount>
void ChangeVertexAttribThenDraw(unsigned int iterations, GLsizei numElements, GLuint buffer)
{
glBindBuffer(GL_ARRAY_BUFFER, buffer);
for (unsigned int it = 0; it < iterations; it++)
{
for (int arrayIndex = 0; arrayIndex < kArrayBufferCount; ++arrayIndex)
{
glVertexAttribPointer(arrayIndex, 2, GL_FLOAT, GL_FALSE, 0, 0);
}
glDrawArrays(GL_TRIANGLES, 0, numElements);
for (int arrayIndex = 0; arrayIndex < kArrayBufferCount; ++arrayIndex)
{
glVertexAttribPointer(arrayIndex, 4, GL_UNSIGNED_BYTE, GL_TRUE, 0, 0);
}
glDrawArrays(GL_TRIANGLES, 0, numElements);
}
}
template <int kArrayBufferCount>
void ChangeArrayBuffersThenDraw(unsigned int iterations,
GLsizei numElements,
GLuint buffer1,
GLuint buffer2)
{
for (unsigned int it = 0; it < iterations; it++)
{
glBindBuffer(GL_ARRAY_BUFFER, buffer1);
for (int arrayIndex = 0; arrayIndex < kArrayBufferCount; ++arrayIndex)
{
glVertexAttribPointer(arrayIndex, 2, GL_FLOAT, GL_FALSE, 0, 0);
}
glDrawArrays(GL_TRIANGLES, 0, numElements);
glBindBuffer(GL_ARRAY_BUFFER, buffer2);
for (int arrayIndex = 0; arrayIndex < kArrayBufferCount; ++arrayIndex)
{
glVertexAttribPointer(arrayIndex, 2, GL_FLOAT, GL_FALSE, 0, 0);
}
glDrawArrays(GL_TRIANGLES, 0, numElements);
}
}
void ChangeTextureThenDraw(unsigned int iterations,
GLsizei numElements,
GLuint texture1,
GLuint texture2)
{
for (unsigned int it = 0; it < iterations; it++)
{
glBindTexture(GL_TEXTURE_2D, texture1);
glDrawArrays(GL_TRIANGLES, 0, numElements);
glBindTexture(GL_TEXTURE_2D, texture2);
glDrawArrays(GL_TRIANGLES, 0, numElements);
}
}
void DrawCallPerfBenchmark::drawBenchmark()
{
// This workaround fixes a huge queue of graphics commands accumulating on the GL
// back-end. The GL back-end doesn't have a proper NULL device at the moment.
// TODO(jmadill): Remove this when/if we ever get a proper OpenGL NULL device.
const auto &eglParams = GetParam().eglParameters;
const auto &params = GetParam();
GLsizei numElements = static_cast<GLsizei>(3 * mNumTris);
switch (params.stateChange)
{
case StateChange::VertexAttrib:
ChangeVertexAttribThenDraw<1>(params.iterationsPerStep, numElements, mBuffer1);
break;
case StateChange::VertexBuffer:
ChangeArrayBuffersThenDraw<1>(params.iterationsPerStep, numElements, mBuffer1,
mBuffer2);
break;
case StateChange::ManyVertexBuffers:
ChangeArrayBuffersThenDraw<5>(params.iterationsPerStep, numElements, mBuffer1,
mBuffer2);
break;
case StateChange::Texture:
ChangeTextureThenDraw(params.iterationsPerStep, numElements, mTexture1, mTexture2);
break;
case StateChange::NoChange:
if (eglParams.deviceType != EGL_PLATFORM_ANGLE_DEVICE_TYPE_NULL_ANGLE ||
(eglParams.renderer != EGL_PLATFORM_ANGLE_TYPE_OPENGL_ANGLE &&
eglParams.renderer != EGL_PLATFORM_ANGLE_TYPE_OPENGLES_ANGLE))
{
ClearThenDraw(params.iterationsPerStep, numElements);
}
else
{
JustDraw(params.iterationsPerStep, numElements);
}
break;
}
ASSERT_GL_NO_ERROR();
}
TEST_P(DrawCallPerfBenchmark, Run)
{
run();
}
DrawArraysPerfParams DrawArrays(const DrawCallPerfParams &base, StateChange stateChange)
{
DrawArraysPerfParams params(base);
params.stateChange = stateChange;
return params;
}
using namespace params;
ANGLE_INSTANTIATE_TEST(DrawCallPerfBenchmark,
DrawArrays(DrawCallD3D9(), StateChange::NoChange),
DrawArrays(NullDevice(DrawCallD3D9()), StateChange::NoChange),
DrawArrays(DrawCallD3D11(), StateChange::NoChange),
DrawArrays(NullDevice(DrawCallD3D11()), StateChange::NoChange),
DrawArrays(NullDevice(Offscreen(DrawCallD3D11())), StateChange::NoChange),
DrawArrays(DrawCallD3D11(), StateChange::VertexAttrib),
DrawArrays(NullDevice(DrawCallD3D11()), StateChange::VertexAttrib),
DrawArrays(DrawCallD3D11(), StateChange::VertexBuffer),
DrawArrays(NullDevice(DrawCallD3D11()), StateChange::VertexBuffer),
DrawArrays(DrawCallD3D11(), StateChange::Texture),
DrawArrays(NullDevice(DrawCallD3D11()), StateChange::Texture),
DrawArrays(DrawCallOpenGL(), StateChange::NoChange),
DrawArrays(NullDevice(DrawCallOpenGL()), StateChange::NoChange),
DrawArrays(NullDevice(Offscreen(DrawCallOpenGL())), StateChange::NoChange),
DrawArrays(DrawCallOpenGL(), StateChange::VertexAttrib),
DrawArrays(NullDevice(DrawCallOpenGL()), StateChange::VertexAttrib),
DrawArrays(DrawCallOpenGL(), StateChange::VertexBuffer),
DrawArrays(NullDevice(DrawCallOpenGL()), StateChange::VertexBuffer),
DrawArrays(DrawCallOpenGL(), StateChange::ManyVertexBuffers),
DrawArrays(NullDevice(DrawCallOpenGL()), StateChange::ManyVertexBuffers),
DrawArrays(DrawCallOpenGL(), StateChange::Texture),
DrawArrays(NullDevice(DrawCallOpenGL()), StateChange::Texture),
DrawArrays(DrawCallValidation(), StateChange::NoChange),
DrawArrays(DrawCallVulkan(), StateChange::NoChange),
DrawArrays(Offscreen(DrawCallVulkan()), StateChange::NoChange),
DrawArrays(NullDevice(DrawCallVulkan()), StateChange::NoChange),
DrawArrays(DrawCallVulkan(), StateChange::VertexAttrib),
DrawArrays(Offscreen(DrawCallVulkan()), StateChange::VertexAttrib),
DrawArrays(NullDevice(DrawCallVulkan()), StateChange::VertexAttrib),
DrawArrays(DrawCallVulkan(), StateChange::VertexBuffer),
DrawArrays(Offscreen(DrawCallVulkan()), StateChange::VertexBuffer),
DrawArrays(NullDevice(DrawCallVulkan()), StateChange::VertexBuffer),
DrawArrays(DrawCallVulkan(), StateChange::ManyVertexBuffers),
DrawArrays(Offscreen(DrawCallVulkan()), StateChange::ManyVertexBuffers),
DrawArrays(NullDevice(DrawCallVulkan()), StateChange::ManyVertexBuffers),
DrawArrays(DrawCallVulkan(), StateChange::Texture),
DrawArrays(Offscreen(DrawCallVulkan()), StateChange::Texture),
DrawArrays(NullDevice(DrawCallVulkan()), StateChange::Texture),
DrawArrays(DrawCallWGL(), StateChange::NoChange),
DrawArrays(Offscreen(DrawCallWGL()), StateChange::NoChange),
DrawArrays(DrawCallWGL(), StateChange::VertexAttrib),
DrawArrays(Offscreen(DrawCallWGL()), StateChange::VertexAttrib),
DrawArrays(DrawCallWGL(), StateChange::VertexBuffer),
DrawArrays(Offscreen(DrawCallWGL()), StateChange::VertexBuffer),
DrawArrays(DrawCallWGL(), StateChange::Texture),
DrawArrays(Offscreen(DrawCallWGL()), StateChange::Texture));
} // anonymous namespace