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//
// 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.
//
#include "gmock/gmock.h"
#include "gtest/gtest.h"
#include "libANGLE/AttributeMap.h"
#include "libANGLE/Config.h"
// Create a generic, valid EGL config that can be modified to test sorting and
// filtering routines
static egl::Config GenerateGenericConfig()
{
egl::Config config;
config.bufferSize = 24;
config.redSize = 8;
config.greenSize = 8;
config.blueSize = 8;
config.luminanceSize = 0;
config.alphaSize = 8;
config.alphaMaskSize = 0;
config.bindToTextureRGB = EGL_TRUE;
config.bindToTextureRGBA = EGL_TRUE;
config.colorBufferType = EGL_RGB_BUFFER;
config.configCaveat = EGL_NONE;
config.configID = 0;
config.conformant = EGL_OPENGL_ES2_BIT;
config.depthSize = 24;
config.level = 0;
config.matchNativePixmap = EGL_NONE;
config.maxPBufferWidth = 1024;
config.maxPBufferHeight = 1024;
config.maxPBufferPixels = config.maxPBufferWidth * config.maxPBufferWidth;
config.maxSwapInterval = 0;
config.minSwapInterval = 4;
config.nativeRenderable = EGL_OPENGL_ES2_BIT;
config.nativeVisualID = 0;
config.nativeVisualType = 0;
config.renderableType = EGL_FALSE;
config.sampleBuffers = 0;
config.samples = 0;
config.stencilSize = 8;
config.surfaceType = EGL_PBUFFER_BIT | EGL_WINDOW_BIT | EGL_SWAP_BEHAVIOR_PRESERVED_BIT;
config.transparentType = EGL_NONE;
config.transparentRedValue = 0;
config.transparentGreenValue = 0;
config.transparentBlueValue = 0;
return config;
}
static std::vector<egl::Config> GenerateUniqueConfigs(size_t count)
{
std::vector<egl::Config> configs;
for (size_t i = 0; i < count; i++)
{
egl::Config config = GenerateGenericConfig();
config.samples = static_cast<EGLint>(i);
configs.push_back(config);
}
return configs;
}
// Add unique configs to a ConfigSet and expect that the size of the
// set is equal to the number of configs added.
TEST(ConfigSetTest, Size)
{
egl::ConfigSet set;
std::vector<egl::Config> uniqueConfigs = GenerateUniqueConfigs(16);
for (size_t i = 0; i < uniqueConfigs.size(); i++)
{
set.add(uniqueConfigs[i]);
EXPECT_EQ(set.size(), i + 1);
}
}
// [EGL 1.5] section 3.4:
// EGL_CONFIG_ID is a unique integer identifying different EGLConfigs. Configuration IDs
// must be small positive integers starting at 1 and ID assignment should be compact;
// that is, if there are N EGLConfigs defined by the EGL implementation, their
// configuration IDs should be in the range [1, N].
TEST(ConfigSetTest, IDs)
{
egl::ConfigSet set;
std::set<EGLint> ids;
std::vector<egl::Config> uniqueConfigs = GenerateUniqueConfigs(16);
for (size_t i = 0; i < uniqueConfigs.size(); i++)
{
EGLint id = set.add(uniqueConfigs[i]);
// Check that the config that was inserted has the ID that was returned
// by ConfigSet::add
EXPECT_EQ(id, set.get(id).configID);
ids.insert(id);
}
// Verify configCount unique IDs
EXPECT_EQ(ids.size(), set.size());
// Check that there are no gaps and the IDs are in the range [1, N].
EXPECT_EQ(*std::min_element(ids.begin(), ids.end()), 1);
EXPECT_EQ(*std::max_element(ids.begin(), ids.end()), static_cast<EGLint>(set.size()));
}
TEST(ConfigSetTest, Filtering_BitSizes)
{
egl::ConfigSet set;
struct VariableConfigBitSize
{
EGLint Name;
EGLint(egl::Config::*ConfigMember);
};
VariableConfigBitSize testMembers[] =
{
{ EGL_RED_SIZE, &egl::Config::redSize },
{ EGL_GREEN_SIZE, &egl::Config::greenSize },
{ EGL_BLUE_SIZE, &egl::Config::blueSize },
{ EGL_ALPHA_SIZE, &egl::Config::alphaSize },
{ EGL_DEPTH_SIZE, &egl::Config::depthSize },
{ EGL_STENCIL_SIZE, &egl::Config::stencilSize },
};
// Generate configsPerType configs with varying bit sizes of each type
size_t configsPerType = 4;
for (size_t i = 0; i < ArraySize(testMembers); i++)
{
for (size_t j = 0; j < configsPerType; j++)
{
egl::Config config = GenerateGenericConfig();
// Set all the other tested members of this config to 0
for (size_t k = 0; k < ArraySize(testMembers); k++)
{
config.*(testMembers[k].ConfigMember) = 0;
}
// Set the tested member of this config to i so it ranges from
// [1, configsPerType]
config.*(testMembers[i].ConfigMember) = static_cast<EGLint>(j) + 1;
set.add(config);
}
}
// for each tested member, filter by it's type and verify that the correct number
// of results are returned
for (size_t i = 0; i < ArraySize(testMembers); i++)
{
// Start with a filter of 1 to not grab the other members
for (EGLint j = 0; j < static_cast<EGLint>(configsPerType); j++)
{
egl::AttributeMap filter;
filter.insert(testMembers[i].Name, j + 1);
std::vector<const egl::Config *> filteredConfigs = set.filter(filter);
EXPECT_EQ(filteredConfigs.size(), configsPerType - j);
}
}
}
// Verify the sorting, [EGL 1.5] section 3.4.1.2 pg 30:
// [configs are sorted] by larger total number of color bits (for an RGB
// color buffer this is the sum of EGL_RED_SIZE, EGL_GREEN_SIZE, EGL_BLUE_SIZE,
// and EGL_ALPHA_SIZE; for a luminance color buffer, the sum of EGL_LUMINANCE_SIZE
// and EGL_ALPHA_SIZE).If the requested number of bits in attrib list for a
// particular color component is 0 or EGL_DONT_CARE, then the number of bits
// for that component is not considered.
TEST(ConfigSetTest, Sorting_BitSizes)
{
egl::ConfigSet set;
size_t testConfigCount = 64;
for (size_t i = 0; i < testConfigCount; i++)
{
egl::Config config = GenerateGenericConfig();
// Give random-ish bit sizes to the config
config.redSize = (i * 2) % 3;
config.greenSize = (i + 5) % 7;
config.blueSize = (i + 7) % 11;
config.alphaSize = (i + 13) % 17;
set.add(config);
}
egl::AttributeMap greaterThan1BitFilter;
greaterThan1BitFilter.insert(EGL_RED_SIZE, 1);
greaterThan1BitFilter.insert(EGL_GREEN_SIZE, 1);
greaterThan1BitFilter.insert(EGL_BLUE_SIZE, 1);
greaterThan1BitFilter.insert(EGL_ALPHA_SIZE, 1);
std::vector<const egl::Config *> filteredConfigs = set.filter(greaterThan1BitFilter);
for (size_t i = 1; i < filteredConfigs.size(); i++)
{
const egl::Config &prevConfig = *filteredConfigs[i - 1];
size_t prevBitCount = prevConfig.redSize +
prevConfig.greenSize +
prevConfig.blueSize +
prevConfig.alphaSize;
const egl::Config &curConfig = *filteredConfigs[i];
size_t curBitCount = curConfig.redSize +
curConfig.greenSize +
curConfig.blueSize +
curConfig.alphaSize;
EXPECT_GE(prevBitCount, curBitCount);
}
}
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