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Fix, correct implementation of setMinMaxLevels
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| Original file line number | Diff line number | Diff line change |
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| /* | ||
| * Copyright (C) 2023 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. | ||
| * | ||
| */ | ||
|
|
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| #ifndef TNT_BACKENDTESTUTILS_H | ||
| #define TNT_BACKENDTESTUTILS_H | ||
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| #include <cstddef> | ||
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| #include <backend/PixelBufferDescriptor.h> | ||
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| using namespace filament; | ||
| using namespace filament::backend; | ||
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| inline void getPixelInfo(PixelDataFormat format, PixelDataType type, size_t& outComponents, int& outBpp) { | ||
| assert_invariant(type != PixelDataType::COMPRESSED); | ||
| switch (format) { | ||
| case PixelDataFormat::UNUSED: | ||
| case PixelDataFormat::R: | ||
| case PixelDataFormat::R_INTEGER: | ||
| case PixelDataFormat::DEPTH_COMPONENT: | ||
| case PixelDataFormat::ALPHA: | ||
| outComponents = 1; | ||
| break; | ||
| case PixelDataFormat::RG: | ||
| case PixelDataFormat::RG_INTEGER: | ||
| case PixelDataFormat::DEPTH_STENCIL: | ||
| outComponents = 2; | ||
| break; | ||
| case PixelDataFormat::RGB: | ||
| case PixelDataFormat::RGB_INTEGER: | ||
| outComponents = 3; | ||
| break; | ||
| case PixelDataFormat::RGBA: | ||
| case PixelDataFormat::RGBA_INTEGER: | ||
| outComponents = 4; | ||
| break; | ||
| } | ||
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| outBpp = outComponents; | ||
| switch (type) { | ||
| case PixelDataType::COMPRESSED: // Impossible -- to squash the IDE warnings | ||
| case PixelDataType::UBYTE: | ||
| case PixelDataType::BYTE: | ||
| // nothing to do | ||
| break; | ||
| case PixelDataType::USHORT: | ||
| case PixelDataType::SHORT: | ||
| case PixelDataType::HALF: | ||
| outBpp *= 2; | ||
| break; | ||
| case PixelDataType::UINT: | ||
| case PixelDataType::INT: | ||
| case PixelDataType::FLOAT: | ||
| outBpp *= 4; | ||
| break; | ||
| case PixelDataType::UINT_10F_11F_11F_REV: | ||
| // Special case, format must be RGB and uses 4 bytes | ||
| assert_invariant(format == PixelDataFormat::RGB); | ||
| outBpp = 4; | ||
| break; | ||
| case PixelDataType::UINT_2_10_10_10_REV: | ||
| // Special case, format must be RGBA and uses 4 bytes | ||
| assert_invariant(format == PixelDataFormat::RGBA); | ||
| outBpp = 4; | ||
| break; | ||
| case PixelDataType::USHORT_565: | ||
| // Special case, format must be RGB and uses 2 bytes | ||
| assert_invariant(format == PixelDataFormat::RGB); | ||
| outBpp = 2; | ||
| break; | ||
| } | ||
| } | ||
|
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| template<typename ComponentType> | ||
| static void fillCheckerboard(void* buffer, size_t size, size_t stride, size_t components, | ||
| ComponentType value) { | ||
| ComponentType* row = (ComponentType*)buffer; | ||
| int p = 0; | ||
| for (int r = 0; r < size; r++) { | ||
| ComponentType* pixel = row; | ||
| for (int col = 0; col < size; col++) { | ||
| // Generate a checkerboard pattern. | ||
| if ((p & 0x0010) ^ ((p / size) & 0x0010)) { | ||
| // Turn on the first component (red). | ||
| pixel[0] = value; | ||
| } | ||
| pixel += components; | ||
| p++; | ||
| } | ||
| row += stride * components; | ||
| } | ||
| } | ||
|
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| static PixelBufferDescriptor checkerboardPixelBuffer(PixelDataFormat format, PixelDataType type, | ||
| size_t size, size_t bufferPadding = 0) { | ||
| size_t components; int bpp; | ||
| getPixelInfo(format, type, components, bpp); | ||
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| size_t bufferSize = size + bufferPadding * 2; | ||
| uint8_t* buffer = (uint8_t*) calloc(1, bufferSize * bufferSize * bpp); | ||
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| uint8_t* ptr = buffer + (bufferSize * bufferPadding * bpp) + (bufferPadding * bpp); | ||
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| switch (type) { | ||
| case PixelDataType::BYTE: | ||
| fillCheckerboard<int8_t>(ptr, size, bufferSize, components, 1); | ||
| break; | ||
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| case PixelDataType::UBYTE: | ||
| fillCheckerboard<uint8_t>(ptr, size, bufferSize, components, 0xFF); | ||
| break; | ||
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| case PixelDataType::SHORT: | ||
| fillCheckerboard<int16_t>(ptr, size, bufferSize, components, 1); | ||
| break; | ||
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| case PixelDataType::USHORT: | ||
| fillCheckerboard<uint16_t>(ptr, size, bufferSize, components, 1u); | ||
| break; | ||
|
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| case PixelDataType::UINT: | ||
| fillCheckerboard<uint32_t>(ptr, size, bufferSize, components, 1u); | ||
| break; | ||
|
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| case PixelDataType::INT: | ||
| fillCheckerboard<int32_t>(ptr, size, bufferSize, components, 1); | ||
| break; | ||
|
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| case PixelDataType::FLOAT: | ||
| fillCheckerboard<float>(ptr, size, bufferSize, components, 1.0f); | ||
| break; | ||
|
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| case PixelDataType::HALF: | ||
| fillCheckerboard<math::half>(ptr, size, bufferSize, components, math::half(1.0f)); | ||
| break; | ||
|
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| case PixelDataType::UINT_2_10_10_10_REV: | ||
| fillCheckerboard<uint32_t>(ptr, size, bufferSize, 1, 0xC00003FF /* red */); | ||
| break; | ||
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| case PixelDataType::USHORT_565: | ||
| fillCheckerboard<uint16_t>(ptr, size, bufferSize, 1, 0xF800 /* red */); | ||
| break; | ||
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| case PixelDataType::UINT_10F_11F_11F_REV: | ||
| fillCheckerboard<uint32_t>(ptr, size, bufferSize, 1, 0x000003C0 /* red */); | ||
| break; | ||
|
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| case PixelDataType::COMPRESSED: | ||
| break; | ||
| } | ||
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| PixelBufferDescriptor descriptor(buffer, bufferSize * bufferSize * bpp, format, type, | ||
| 1, bufferPadding, bufferPadding, bufferSize, [](void* buffer, size_t size, void* user) { | ||
| free(buffer); | ||
| }, nullptr); | ||
| return descriptor; | ||
| } | ||
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| #endif // TNT_BACKENDTESTUTILS_H |
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