From b56a50064caf2a590ba43699e0074690fcd431bf Mon Sep 17 00:00:00 2001 From: Jeff McGlynn Date: Wed, 20 Jun 2018 11:34:20 -0700 Subject: Initial version of astc-codec for open source release Contains an implementation of an ASTC decoder that is able to pass the dEQP ASTC LDR tests. astc-codec has no external dependencies for the main library, only for test code, and is licensed under the Apache license. Components: include/ - Public API that can decode ASTC LDR data into a RGBA UNORM8 buffer. src/base/ - Base library with common functionality not directly related to ASTC decoding. Contains a uint128 implementation, BitStream for reading/writing bits with a primitive (or uint128 type), Optional implementation (to not take a dependency on C++17), and more. src/decoder/ - Internal implementation of the ASTC decoder. src/base/test/, src/decoder/test/ - Unit tests (and a fuzzing test) for the astc decoder. src/decoder/testdata/ - Sample ASTC images and golden image results for testing. src/decoder/tools/ - A tool to inspect contents of an ASTC file. third_party/ - Third party libraries, only used for tests. Change-Id: Ia98e5a7dc847daa3d3a48c5e62d94b8fb1cb98bd --- src/decoder/test/weight_infill_test.cc | 69 ++++++++++++++++++++++++++++++++++ 1 file changed, 69 insertions(+) create mode 100644 src/decoder/test/weight_infill_test.cc (limited to 'src/decoder/test/weight_infill_test.cc') diff --git a/src/decoder/test/weight_infill_test.cc b/src/decoder/test/weight_infill_test.cc new file mode 100644 index 0000000..79c7745 --- /dev/null +++ b/src/decoder/test/weight_infill_test.cc @@ -0,0 +1,69 @@ +// Copyright 2018 Google LLC +// +// 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 +// +// https://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 "src/decoder/weight_infill.h" +#include "src/decoder/footprint.h" + +#include + +#include + +namespace astc_codec { + +namespace { + +// Make sure that the physical size of the bit representations for certain +// dimensions of weight grids matches our expectations +TEST(ASTCWeightInfillTest, TestGetBitCount) { + // Bit encodings + EXPECT_EQ(32, CountBitsForWeights(4, 4, 3)); + EXPECT_EQ(48, CountBitsForWeights(4, 4, 7)); + EXPECT_EQ(24, CountBitsForWeights(2, 4, 7)); + EXPECT_EQ(8, CountBitsForWeights(2, 4, 1)); + + // Trit encodings + EXPECT_EQ(32, CountBitsForWeights(4, 5, 2)); + EXPECT_EQ(26, CountBitsForWeights(4, 4, 2)); + EXPECT_EQ(52, CountBitsForWeights(4, 5, 5)); + EXPECT_EQ(42, CountBitsForWeights(4, 4, 5)); + + // Quint encodings + EXPECT_EQ(21, CountBitsForWeights(3, 3, 4)); + EXPECT_EQ(38, CountBitsForWeights(4, 4, 4)); + EXPECT_EQ(49, CountBitsForWeights(3, 7, 4)); + EXPECT_EQ(52, CountBitsForWeights(4, 3, 19)); + EXPECT_EQ(70, CountBitsForWeights(4, 4, 19)); +} + +// Make sure that we bilerp our weights properly +TEST(ASTCWeightInfillTest, TestInfillBilerp) { + std::vector weights = InfillWeights( + {{ 1, 3, 5, 3, 5, 7, 5, 7, 9 }}, Footprint::Get5x5(), 3, 3); + + std::vector expected_weights = { + 1, 2, 3, 4, 5, + 2, 3, 4, 5, 6, + 3, 4, 5, 6, 7, + 4, 5, 6, 7, 8, + 5, 6, 7, 8, 9 }; + + ASSERT_EQ(weights.size(), expected_weights.size()); + for (int i = 0; i < weights.size(); ++i) { + EXPECT_EQ(weights[i], expected_weights[i]); + } +} + +} // namespace + +} // namespace astc_codec -- cgit v1.2.3