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/*
* Copyright 2021 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <gmock/gmock.h>
#include <gtest/gtest.h>
#include <tonemap/tonemap.h>
#include <cmath>
namespace android {
using testing::HasSubstr;
struct TonemapTest : public ::testing::Test {};
TEST_F(TonemapTest, generateShaderSkSLUniforms_containsDefaultUniforms) {
static const constexpr float kDisplayMaxLuminance = 1.f;
static const constexpr float kContentMaxLuminance = 2.f;
tonemap::Metadata metadata{.displayMaxLuminance = kDisplayMaxLuminance,
.contentMaxLuminance = kContentMaxLuminance};
const auto uniforms = tonemap::getToneMapper()->generateShaderSkSLUniforms(metadata);
ASSERT_EQ(1, std::count_if(uniforms.cbegin(), uniforms.cend(), [](const auto& data) {
return data.name == "in_libtonemap_displayMaxLuminance";
}));
ASSERT_EQ(1, std::count_if(uniforms.cbegin(), uniforms.cend(), [](const auto& data) {
return data.name == "in_libtonemap_inputMaxLuminance";
}));
// Smoke check that metadata values are "real", specifically that they're non-zero and actually
// numbers. This is to help avoid shaders using these uniforms from dividing by zero or other
// catastrophic errors.
const auto& displayLum = std::find_if(uniforms.cbegin(), uniforms.cend(), [](const auto& data) {
return data.name == "in_libtonemap_displayMaxLuminance";
})->value;
float displayLumFloat = 0.f;
std::memcpy(&displayLumFloat, displayLum.data(), displayLum.size());
EXPECT_FALSE(std::isnan(displayLumFloat));
EXPECT_GT(displayLumFloat, 0);
const auto& contentLum = std::find_if(uniforms.cbegin(), uniforms.cend(), [](const auto& data) {
return data.name == "in_libtonemap_inputMaxLuminance";
})->value;
float contentLumFloat = 0.f;
std::memcpy(&contentLumFloat, contentLum.data(), contentLum.size());
EXPECT_FALSE(std::isnan(contentLumFloat));
EXPECT_GT(contentLumFloat, 0);
}
TEST_F(TonemapTest, generateTonemapGainShaderSkSL_containsEntryPointForPQ) {
const auto shader =
tonemap::getToneMapper()
->generateTonemapGainShaderSkSL(aidl::android::hardware::graphics::common::
Dataspace::BT2020_ITU_PQ,
aidl::android::hardware::graphics::common::
Dataspace::DISPLAY_P3);
// Other tests such as librenderengine_test will plug in the shader to check compilation.
EXPECT_THAT(shader, HasSubstr("float libtonemap_LookupTonemapGain(vec3 linearRGB, vec3 xyz)"));
}
TEST_F(TonemapTest, generateTonemapGainShaderSkSL_containsEntryPointForHLG) {
const auto shader =
tonemap::getToneMapper()
->generateTonemapGainShaderSkSL(aidl::android::hardware::graphics::common::
Dataspace::BT2020_ITU_HLG,
aidl::android::hardware::graphics::common::
Dataspace::DISPLAY_P3);
// Other tests such as librenderengine_test will plug in the shader to check compilation.
EXPECT_THAT(shader, HasSubstr("float libtonemap_LookupTonemapGain(vec3 linearRGB, vec3 xyz)"));
}
} // namespace android
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