| /*------------------------------------------------------------------------- |
| * drawElements Internal Test Module |
| * --------------------------------- |
| * |
| * Copyright 2015 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. |
| * |
| *//*! |
| * \file |
| * \brief 8-bit sRGB conversion test. |
| *//*--------------------------------------------------------------------*/ |
| |
| #include "ditSRGB8ConversionTest.hpp" |
| |
| #include "tcuFloat.hpp" |
| #include "tcuTestLog.hpp" |
| #include "tcuTextureUtil.hpp" |
| #include "tcuVectorUtil.hpp" |
| |
| namespace dit |
| { |
| namespace |
| { |
| |
| deUint32 calculateDiscreteFloatDistance (float a, float b) |
| { |
| const deUint32 au = tcu::Float32(a).bits(); |
| const deUint32 bu = tcu::Float32(b).bits(); |
| |
| const bool asign = (au & (0x1u << 31u)) != 0u; |
| const bool bsign = (bu & (0x1u << 31u)) != 0u; |
| |
| const deUint32 avalue = (au & ((0x1u << 31u) - 1u)); |
| const deUint32 bvalue = (bu & ((0x1u << 31u) - 1u)); |
| |
| if (asign != bsign) |
| return avalue + bvalue + 1u; |
| else if (avalue < bvalue) |
| return bvalue - avalue; |
| else |
| return avalue - bvalue; |
| } |
| |
| const tcu::UVec4 calculateDiscreteFloatDistance (const tcu::Vec4& ref, const tcu::Vec4& res) |
| { |
| return tcu::UVec4(calculateDiscreteFloatDistance(ref[0], res[0]), calculateDiscreteFloatDistance(ref[1], res[1]), calculateDiscreteFloatDistance(ref[2], res[2]), calculateDiscreteFloatDistance(ref[3], res[3])); |
| } |
| |
| class SRGB8ConversionTest : public tcu::TestCase |
| { |
| public: |
| SRGB8ConversionTest (tcu::TestContext& context) |
| : tcu::TestCase (context, "srgb8", "SRGB8 conversion test") |
| { |
| } |
| |
| IterateResult iterate (void) |
| { |
| bool isOk = true; |
| tcu::TestLog& log = m_testCtx.getLog(); |
| |
| for (int i = 0; i < 256; i++) |
| { |
| const tcu::UVec4 src (i); |
| const tcu::Vec4 res (tcu::sRGBA8ToLinear(src)); |
| const tcu::Vec4 ref (tcu::sRGBToLinear(src.cast<float>() / tcu::Vec4(255.0f))); |
| const tcu::Vec4 diff (res - ref); |
| const tcu::UVec4 discreteFloatDiff (calculateDiscreteFloatDistance(ref, res)); |
| |
| if (tcu::anyNotEqual(res, ref)) |
| log << tcu::TestLog::Message << i << ", Res: " << res << ", Ref: " << ref << ", Diff: " << diff << ", Discrete float diff: " << discreteFloatDiff << tcu::TestLog::EndMessage; |
| |
| if (tcu::boolAny(tcu::greaterThan(discreteFloatDiff, tcu::UVec4(1u)))) |
| isOk = false; |
| } |
| |
| if (isOk) |
| m_testCtx.setTestResult(QP_TEST_RESULT_PASS, "Pass"); |
| else |
| m_testCtx.setTestResult(QP_TEST_RESULT_FAIL, "Got ulp diffs greater than one."); |
| |
| return STOP; |
| } |
| }; |
| |
| } // anonymous |
| |
| tcu::TestCase* createSRGB8ConversionTest (tcu::TestContext& context) |
| { |
| return new SRGB8ConversionTest(context); |
| } |
| |
| } // dit |