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remove old standalone KtxReader source files

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This commit is contained in:
Nick Fisher
2023-10-03 00:17:46 +08:00
parent a402b969a2
commit 0b67eb7eb6
4 changed files with 0 additions and 1370 deletions
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259
ios/src/ktxreader/Ktx1Reader.cpp
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@@ -1,259 +0,0 @@
/*
* Copyright (C) 2022 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 <ktxreader/Ktx1Reader.h>
#include <utils/Log.h>
#include <filament/Engine.h>
#include <filament/Texture.h>
namespace ktxreader {
namespace Ktx1Reader {
Texture* createTexture(Engine* engine, const Ktx1Bundle& ktx, bool srgb,
Callback callback, void* userdata) {
using Sampler = Texture::Sampler;
const auto& ktxinfo = ktx.getInfo();
const uint32_t nmips = ktx.getNumMipLevels();
const auto cdatatype = toCompressedPixelDataType(ktxinfo);
const auto datatype = toPixelDataType(ktxinfo);
const auto dataformat = toPixelDataFormat(ktxinfo);
auto texformat = toTextureFormat(ktxinfo);
#ifndef NDEBUG
if (srgb && !isSrgbTextureFormat(texformat)) {
utils::slog.w << "Requested sRGB format but KTX contains a linear format. "
<< utils::io::endl;
} else if (!srgb && isSrgbTextureFormat(texformat)) {
utils::slog.w << "Requested linear format but KTX contains a sRGB format. "
<< utils::io::endl;
}
#endif
Texture* texture = Texture::Builder()
.width(ktxinfo.pixelWidth)
.height(ktxinfo.pixelHeight)
.levels(static_cast<uint8_t>(nmips))
.sampler(ktx.isCubemap() ? Sampler::SAMPLER_CUBEMAP : Sampler::SAMPLER_2D)
.format(texformat)
.build(*engine);
struct Userdata {
uint32_t remainingBuffers;
Callback callback;
void* userdata;
};
Userdata* cbuser = new Userdata({nmips, callback, userdata});
PixelBufferDescriptor::Callback cb = [](void*, size_t, void* cbuserptr) {
Userdata* cbuser = (Userdata*) cbuserptr;
if (--cbuser->remainingBuffers == 0) {
if (cbuser->callback) {
cbuser->callback(cbuser->userdata);
}
delete cbuser;
}
};
uint8_t* data;
uint32_t size;
if (isCompressed(ktxinfo)) {
if (ktx.isCubemap()) {
for (uint32_t level = 0; level < nmips; ++level) {
ktx.getBlob({level, 0, 0}, &data, &size);
PixelBufferDescriptor pbd(data, size * 6, cdatatype, size, cb, cbuser);
texture->setImage(*engine, level, std::move(pbd), Texture::FaceOffsets(size));
}
return texture;
}
for (uint32_t level = 0; level < nmips; ++level) {
ktx.getBlob({level, 0, 0}, &data, &size);
PixelBufferDescriptor pbd(data, size, cdatatype, size, cb, cbuser);
texture->setImage(*engine, level, std::move(pbd));
}
return texture;
}
if (ktx.isCubemap()) {
for (uint32_t level = 0; level < nmips; ++level) {
ktx.getBlob({level, 0, 0}, &data, &size);
PixelBufferDescriptor pbd(data, size * 6, dataformat, datatype, cb, cbuser);
texture->setImage(*engine, level, std::move(pbd), Texture::FaceOffsets(size));
}
return texture;
}
for (uint32_t level = 0; level < nmips; ++level) {
ktx.getBlob({level, 0, 0}, &data, &size);
PixelBufferDescriptor pbd(data, size, dataformat, datatype, cb, cbuser);
texture->setImage(*engine, level, std::move(pbd));
}
return texture;
}
Texture* createTexture(Engine* engine, Ktx1Bundle* ktx, bool srgb) {
auto freeKtx = [] (void* userdata) {
Ktx1Bundle* ktx = (Ktx1Bundle*) userdata;
delete ktx;
};
return createTexture(engine, *ktx, srgb, freeKtx, ktx);
}
CompressedPixelDataType toCompressedPixelDataType(const KtxInfo& info) {
return toCompressedFilamentEnum<CompressedPixelDataType>(info.glInternalFormat);
}
PixelDataType toPixelDataType(const KtxInfo& info) {
switch (info.glType) {
case Ktx1Bundle::UNSIGNED_BYTE: return PixelDataType::UBYTE;
case Ktx1Bundle::UNSIGNED_SHORT: return PixelDataType::USHORT;
case Ktx1Bundle::HALF_FLOAT: return PixelDataType::HALF;
case Ktx1Bundle::FLOAT: return PixelDataType::FLOAT;
case Ktx1Bundle::R11F_G11F_B10F: return PixelDataType::UINT_10F_11F_11F_REV;
}
return (PixelDataType) 0xff;
}
PixelDataFormat toPixelDataFormat(const KtxInfo& info) {
switch (info.glFormat) {
case Ktx1Bundle::LUMINANCE:
case Ktx1Bundle::RED: return PixelDataFormat::R;
case Ktx1Bundle::RG: return PixelDataFormat::RG;
case Ktx1Bundle::RGB: return PixelDataFormat::RGB;
case Ktx1Bundle::RGBA: return PixelDataFormat::RGBA;
// glFormat should NOT be a sized format according to the spec
// however cmgen was generating incorrect files until after Filament 1.8.0
// so we keep this line here to preserve compatibility with older assets
case Ktx1Bundle::R11F_G11F_B10F: return PixelDataFormat::RGB;
}
return (PixelDataFormat) 0xff;
}
bool isCompressed(const KtxInfo& info) {
return info.glFormat == 0;
}
bool isSrgbTextureFormat(TextureFormat format) {
switch(format) {
// Non-compressed
case Texture::InternalFormat::RGB8:
case Texture::InternalFormat::RGBA8:
return false;
// ASTC
case Texture::InternalFormat::RGBA_ASTC_4x4:
case Texture::InternalFormat::RGBA_ASTC_5x4:
case Texture::InternalFormat::RGBA_ASTC_5x5:
case Texture::InternalFormat::RGBA_ASTC_6x5:
case Texture::InternalFormat::RGBA_ASTC_6x6:
case Texture::InternalFormat::RGBA_ASTC_8x5:
case Texture::InternalFormat::RGBA_ASTC_8x6:
case Texture::InternalFormat::RGBA_ASTC_8x8:
case Texture::InternalFormat::RGBA_ASTC_10x5:
case Texture::InternalFormat::RGBA_ASTC_10x6:
case Texture::InternalFormat::RGBA_ASTC_10x8:
case Texture::InternalFormat::RGBA_ASTC_10x10:
case Texture::InternalFormat::RGBA_ASTC_12x10:
case Texture::InternalFormat::RGBA_ASTC_12x12:
return false;
// ETC2
case Texture::InternalFormat::ETC2_RGB8:
case Texture::InternalFormat::ETC2_RGB8_A1:
case Texture::InternalFormat::ETC2_EAC_RGBA8:
return false;
// DXT
case Texture::InternalFormat::DXT1_RGB:
case Texture::InternalFormat::DXT1_RGBA:
case Texture::InternalFormat::DXT3_RGBA:
case Texture::InternalFormat::DXT5_RGBA:
return false;
default:
return true;
}
}
TextureFormat toTextureFormat(const KtxInfo& info) {
switch (info.glInternalFormat) {
case Ktx1Bundle::RED: return TextureFormat::R8;
case Ktx1Bundle::RG: return TextureFormat::RG8;
case Ktx1Bundle::RGB: return TextureFormat::RGB8;
case Ktx1Bundle::RGBA: return TextureFormat::RGBA8;
case Ktx1Bundle::LUMINANCE: return TextureFormat::R8;
case Ktx1Bundle::LUMINANCE_ALPHA: return TextureFormat::RG8;
case Ktx1Bundle::R8: return TextureFormat::R8;
case Ktx1Bundle::R8_SNORM: return TextureFormat::R8_SNORM;
case Ktx1Bundle::R8UI: return TextureFormat::R8UI;
case Ktx1Bundle::R8I: return TextureFormat::R8I;
case Ktx1Bundle::STENCIL_INDEX8: return TextureFormat::STENCIL8;
case Ktx1Bundle::R16F: return TextureFormat::R16F;
case Ktx1Bundle::R16UI: return TextureFormat::R16UI;
case Ktx1Bundle::R16I: return TextureFormat::R16I;
case Ktx1Bundle::RG8: return TextureFormat::RG8;
case Ktx1Bundle::RG8_SNORM: return TextureFormat::RG8_SNORM;
case Ktx1Bundle::RG8UI: return TextureFormat::RG8UI;
case Ktx1Bundle::RG8I: return TextureFormat::RG8I;
case Ktx1Bundle::RGB565: return TextureFormat::RGB565;
case Ktx1Bundle::RGB9_E5: return TextureFormat::RGB9_E5;
case Ktx1Bundle::RGB5_A1: return TextureFormat::RGB5_A1;
case Ktx1Bundle::RGBA4: return TextureFormat::RGBA4;
case Ktx1Bundle::DEPTH_COMPONENT16: return TextureFormat::DEPTH16;
case Ktx1Bundle::RGB8: return TextureFormat::RGB8;
case Ktx1Bundle::SRGB8: return TextureFormat::SRGB8;
case Ktx1Bundle::RGB8_SNORM: return TextureFormat::RGB8_SNORM;
case Ktx1Bundle::RGB8UI: return TextureFormat::RGB8UI;
case Ktx1Bundle::RGB8I: return TextureFormat::RGB8I;
case Ktx1Bundle::R32F: return TextureFormat::R32F;
case Ktx1Bundle::R32UI: return TextureFormat::R32UI;
case Ktx1Bundle::R32I: return TextureFormat::R32I;
case Ktx1Bundle::RG16F: return TextureFormat::RG16F;
case Ktx1Bundle::RG16UI: return TextureFormat::RG16UI;
case Ktx1Bundle::RG16I: return TextureFormat::RG16I;
case Ktx1Bundle::R11F_G11F_B10F: return TextureFormat::R11F_G11F_B10F;
case Ktx1Bundle::RGBA8: return TextureFormat::RGBA8;
case Ktx1Bundle::SRGB8_ALPHA8: return TextureFormat::SRGB8_A8;
case Ktx1Bundle::RGBA8_SNORM: return TextureFormat::RGBA8_SNORM;
case Ktx1Bundle::RGB10_A2: return TextureFormat::RGB10_A2;
case Ktx1Bundle::RGBA8UI: return TextureFormat::RGBA8UI;
case Ktx1Bundle::RGBA8I: return TextureFormat::RGBA8I;
case Ktx1Bundle::DEPTH24_STENCIL8: return TextureFormat::DEPTH24_STENCIL8;
case Ktx1Bundle::DEPTH32F_STENCIL8: return TextureFormat::DEPTH32F_STENCIL8;
case Ktx1Bundle::RGB16F: return TextureFormat::RGB16F;
case Ktx1Bundle::RGB16UI: return TextureFormat::RGB16UI;
case Ktx1Bundle::RGB16I: return TextureFormat::RGB16I;
case Ktx1Bundle::RG32F: return TextureFormat::RG32F;
case Ktx1Bundle::RG32UI: return TextureFormat::RG32UI;
case Ktx1Bundle::RG32I: return TextureFormat::RG32I;
case Ktx1Bundle::RGBA16F: return TextureFormat::RGBA16F;
case Ktx1Bundle::RGBA16UI: return TextureFormat::RGBA16UI;
case Ktx1Bundle::RGBA16I: return TextureFormat::RGBA16I;
case Ktx1Bundle::RGB32F: return TextureFormat::RGB32F;
case Ktx1Bundle::RGB32UI: return TextureFormat::RGB32UI;
case Ktx1Bundle::RGB32I: return TextureFormat::RGB32I;
case Ktx1Bundle::RGBA32F: return TextureFormat::RGBA32F;
case Ktx1Bundle::RGBA32UI: return TextureFormat::RGBA32UI;
case Ktx1Bundle::RGBA32I: return TextureFormat::RGBA32I;
}
return toCompressedFilamentEnum<TextureFormat>(info.glInternalFormat);
}
} // namespace Ktx1Reader
} // namespace ktxreader

426
ios/src/ktxreader/Ktx2Reader.cpp
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@@ -1,426 +0,0 @@
/*
* Copyright (C) 2022 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 <ktxreader/Ktx2Reader.h>
#include <filament/Engine.h>
#include <filament/Texture.h>
#include <utils/Log.h>
#include <atomic>
#include <vector>
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Warray-bounds"
#include <basisu_transcoder.h>
#pragma clang diagnostic pop
using namespace basist;
using namespace filament;
using TransferFunction = ktxreader::Ktx2Reader::TransferFunction;
using Result = ktxreader::Ktx2Reader::Result;
using Async = ktxreader::Ktx2Reader::Async;
using Buffer = std::vector<uint8_t>;
namespace {
struct FinalFormatInfo {
const char* name; // <-- for debug purposes only
bool isSupported;
bool isCompressed;
TransferFunction transferFunction;
transcoder_texture_format basisFormat;
Texture::CompressedType compressedPixelDataType;
Texture::Type pixelDataType;
Texture::Format pixelDataFormat;
};
}
// This function returns various information about a Filament internal format, most notably its
// equivalent BasisU enumerant.
//
// Return by value isn't expensive here due to copy elision.
//
// Note that Filament's internal format list mimics the Vulkan format list, which
// embeds transfer function information (i.e. sRGB or not) into the format, whereas
// the basis format list does not.
//
// The following formats supported by BasisU but are not supported by Filament.
//
// transcoder_texture_format::cTFETC1_RGB
// transcoder_texture_format::cTFATC_RGB
// transcoder_texture_format::cTFATC_RGBA
// transcoder_texture_format::cTFFXT1_RGB
// transcoder_texture_format::cTFPVRTC2_4_RGB
// transcoder_texture_format::cTFPVRTC2_4_RGBA
// transcoder_texture_format::cTFPVRTC1_4_RGB
// transcoder_texture_format::cTFPVRTC1_4_RGBA
// transcoder_texture_format::cTFBC4_R
// transcoder_texture_format::cTFBC5_RG
// transcoder_texture_format::cTFBC7_RGBA (this format would add size bloat to the transcoder)
// transcoder_texture_format::cTFBGR565 (note the blue/red swap)
//
static FinalFormatInfo getFinalFormatInfo(Texture::InternalFormat fmt) {
using tif = Texture::InternalFormat;
using tct = Texture::CompressedType;
using tt = Texture::Type;
using tf = Texture::Format;
using ttf = transcoder_texture_format;
const auto sRGB = TransferFunction::sRGB;
const auto LINEAR = TransferFunction::LINEAR;
switch (fmt) {
case tif::ETC2_EAC_SRGBA8: return {"ETC2_EAC_SRGBA8", true, true, sRGB, ttf::cTFETC2_RGBA, tct::ETC2_EAC_RGBA8};
case tif::ETC2_EAC_RGBA8: return {"ETC2_EAC_RGBA8", true, true, LINEAR, ttf::cTFETC2_RGBA, tct::ETC2_EAC_SRGBA8};
case tif::DXT1_SRGB: return {"DXT1_SRGB", true, true, sRGB, ttf::cTFBC1_RGB, tct::DXT1_RGB};
case tif::DXT1_RGB: return {"DXT1_RGB", true, true, LINEAR, ttf::cTFBC1_RGB, tct::DXT1_SRGB};
case tif::DXT5_SRGBA: return {"DXT5_SRGBA", true, true, sRGB, ttf::cTFBC3_RGBA, tct::DXT5_RGBA};
case tif::DXT5_RGBA: return {"DXT5_RGBA", true, true, LINEAR, ttf::cTFBC3_RGBA, tct::DXT5_SRGBA};
case tif::SRGB8_ALPHA8_ASTC_4x4: return {"SRGB8_ALPHA8_ASTC_4x4", true, true, sRGB, ttf::cTFASTC_4x4_RGBA, tct::RGBA_ASTC_4x4};
case tif::RGBA_ASTC_4x4: return {"RGBA_ASTC_4x4", true, true, LINEAR, ttf::cTFASTC_4x4_RGBA, tct::SRGB8_ALPHA8_ASTC_4x4};
case tif::EAC_R11: return {"EAC_R11", true, true, LINEAR, ttf::cTFETC2_EAC_R11, tct::EAC_R11};
// The following format is useful for normal maps.
// Note that BasisU supports only the unsigned variant.
case tif::EAC_RG11: return {"EAC_RG11", true, true, LINEAR, ttf::cTFETC2_EAC_RG11, tct::EAC_RG11};
// Uncompressed formats.
case tif::SRGB8_A8: return {"SRGB8_A8", true, false, sRGB, ttf::cTFRGBA32, {}, tt::UBYTE, tf::RGBA};
case tif::RGBA8: return {"RGBA8", true, false, LINEAR, ttf::cTFRGBA32, {}, tt::UBYTE, tf::RGBA};
case tif::RGB565: return {"RGB565", true, false, LINEAR, ttf::cTFRGB565, {}, tt::USHORT_565, tf::RGB};
case tif::RGBA4: return {"RGBA4", true, false, LINEAR, ttf::cTFRGBA4444, {}, tt::USHORT, tf::RGBA};
default: return {};
}
}
// In theory we could pass "free" directly into the callback but doing so triggers ASAN warnings.
static void freeCallback(void* buf, size_t, void* userdata) {
free(buf);
}
// This helper is used by both the asynchronous and synchronous API's.
static Result transcodeImageLevel(ktx2_transcoder& transcoder,
ktx2_transcoder_state& transcoderState, Texture::InternalFormat format,
uint32_t levelIndex, Texture::PixelBufferDescriptor** pbd) {
using basisu::texture_format;
assert_invariant(levelIndex < KTX2_MAX_SUPPORTED_LEVEL_COUNT);
const FinalFormatInfo formatInfo = getFinalFormatInfo(format);
const texture_format destFormat = basis_get_basisu_texture_format(formatInfo.basisFormat);
const uint32_t layerIndex = 0;
const uint32_t faceIndex = 0;
const uint32_t decodeFlags = 0;
const uint32_t outputRowPitch = 0;
const uint32_t outputRowCount = 0;
const int channel0 = 0;
const int channel1 = 0;
basist::ktx2_image_level_info levelInfo;
transcoder.get_image_level_info(levelInfo, levelIndex, layerIndex, faceIndex);
if (formatInfo.isCompressed) {
const uint32_t qwordsPerBlock = basisu::get_qwords_per_block(destFormat);
const size_t byteCount = sizeof(uint64_t) * qwordsPerBlock * levelInfo.m_total_blocks;
uint64_t* const blocks = (uint64_t*) malloc(byteCount);
if (!transcoder.transcode_image_level(levelIndex, layerIndex, faceIndex, blocks,
levelInfo.m_total_blocks, formatInfo.basisFormat, decodeFlags,
outputRowPitch, outputRowCount, channel0,
channel1, &transcoderState)) {
return Result::COMPRESSED_TRANSCODE_FAILURE;
}
*pbd = new Texture::PixelBufferDescriptor(blocks,
byteCount, formatInfo.compressedPixelDataType, byteCount, freeCallback);
return Result::SUCCESS;
}
const uint32_t rowCount = levelInfo.m_orig_height;
const uint32_t bytesPerPix = basis_get_bytes_per_block_or_pixel(formatInfo.basisFormat);
const size_t byteCount = bytesPerPix * levelInfo.m_orig_width * rowCount;
uint64_t* const rows = (uint64_t*) malloc(byteCount);
if (!transcoder.transcode_image_level(levelIndex, layerIndex, faceIndex, rows,
byteCount / bytesPerPix, formatInfo.basisFormat, decodeFlags,
outputRowPitch, outputRowCount, channel0, channel1, &transcoderState)) {
return Result::UNCOMPRESSED_TRANSCODE_FAILURE;
}
*pbd = new Texture::PixelBufferDescriptor(rows, byteCount,
formatInfo.pixelDataFormat, formatInfo.pixelDataType, freeCallback);
return Result::SUCCESS;
}
namespace ktxreader {
class FAsync : public Async {
public:
FAsync(Texture* texture, Engine& engine, ktx2_transcoder* transcoder, Buffer&& buf) :
mTexture(texture), mEngine(engine), mTranscoder(transcoder),
mSourceBuffer(std::move(buf)) {}
Texture* getTexture() const noexcept { return mTexture; }
Result doTranscoding();
void uploadImages();
private:
using TranscoderResult = std::atomic<Texture::PixelBufferDescriptor*>;
// After each level is transcoded, the results are stashed in the following array until the
// foreground thread calls uploadImages(). Each slot in the array corresponds to a single
// miplevel in the texture.
TranscoderResult mTranscoderResults[KTX2_MAX_SUPPORTED_LEVEL_COUNT] = {};
Texture* const mTexture;
Engine& mEngine;
// We do not share the BasisU trancoder between Async objects. The BasisU transcoder
// allows parallelization at "level" granularity, but does not permit parallelization at
// "texture" granularity. i.e. the transcode_image_level() method is thread-safe but the
// start_transcoding() method is not.
std::unique_ptr<ktx2_transcoder> const mTranscoder;
// Storage for the content of the KTX2 file.
Buffer mSourceBuffer;
};
Ktx2Reader::Ktx2Reader(Engine& engine, bool quiet) :
mEngine(engine),
mQuiet(quiet),
mTranscoder(new ktx2_transcoder()) {
mRequestedFormats.reserve((size_t) transcoder_texture_format::cTFTotalTextureFormats);
basisu_transcoder_init();
}
Ktx2Reader::~Ktx2Reader() {
delete mTranscoder;
}
Result Ktx2Reader::requestFormat(Texture::InternalFormat format) noexcept {
if (!getFinalFormatInfo(format).isSupported) {
return Result::FORMAT_UNSUPPORTED;
}
for (Texture::InternalFormat fmt : mRequestedFormats) {
if (fmt == format) {
return Result::FORMAT_ALREADY_REQUESTED;
}
}
mRequestedFormats.push_back(format);
return Result::SUCCESS;
}
void Ktx2Reader::unrequestFormat(Texture::InternalFormat format) noexcept {
for (auto iter = mRequestedFormats.begin(); iter != mRequestedFormats.end(); ++iter) {
if (*iter == format) {
mRequestedFormats.erase(iter);
return;
}
}
}
Texture* Ktx2Reader::load(const void* data, size_t size, TransferFunction transfer) {
Texture* texture = createTexture(mTranscoder, data, size, transfer);
if (texture == nullptr) {
return nullptr;
}
if (!mTranscoder->start_transcoding()) {
mEngine.destroy(texture);
if (!mQuiet) {
utils::slog.e << "BasisU start_transcoding failed." << utils::io::endl;
}
return nullptr;
}
ktx2_transcoder_state basisThreadState;
basisThreadState.clear();
for (uint32_t levelIndex = 0, n = mTranscoder->get_levels(); levelIndex < n; levelIndex++) {
Texture::PixelBufferDescriptor* pbd;
Result result = transcodeImageLevel(*mTranscoder, basisThreadState, texture->getFormat(),
levelIndex, &pbd);
if (UTILS_UNLIKELY(result != Result::SUCCESS)) {
mEngine.destroy(texture);
if (!mQuiet) {
utils::slog.e << "Failed to transcode level " << levelIndex << utils::io::endl;
}
return nullptr;
}
texture->setImage(mEngine, levelIndex, std::move(*pbd));
}
return texture;
}
Result FAsync::doTranscoding() {
ktx2_transcoder_state basisThreadState;
basisThreadState.clear();
for (uint32_t levelIndex = 0, n = mTranscoder->get_levels(); levelIndex < n; levelIndex++) {
Texture::PixelBufferDescriptor* pbd;
Result result = transcodeImageLevel(*mTranscoder, basisThreadState, mTexture->getFormat(),
levelIndex, &pbd);
if (UTILS_UNLIKELY(result != Result::SUCCESS)) {
return result;
}
mTranscoderResults[levelIndex].store(pbd);
}
return Result::SUCCESS;
}
void FAsync::uploadImages() {
size_t levelIndex = 0;
UTILS_NOUNROLL
for (TranscoderResult& level : mTranscoderResults) {
Texture::PixelBufferDescriptor* pbd = level.load();
if (pbd) {
level.store(nullptr);
mTexture->setImage(mEngine, levelIndex, std::move(*pbd));
delete pbd;
}
++levelIndex;
}
}
Async* Ktx2Reader::asyncCreate(const void* data, size_t size, TransferFunction transfer) {
Buffer ktx2content((uint8_t*)data, (uint8_t*)data + size);
ktx2_transcoder* transcoder = new ktx2_transcoder();
Texture* texture = createTexture(transcoder, ktx2content.data(), ktx2content.size(), transfer);
if (texture == nullptr) {
delete transcoder;
return nullptr;
}
if (!transcoder->start_transcoding()) {
delete transcoder;
mEngine.destroy(texture);
return nullptr;
}
// There's no need to do any further work at this point but it should be noted that this is the
// point at which we first come to know the number of miplevels, dimensions, etc. If we had a
// dynamically sized array to store decoder results, we would reserve it here.
return new FAsync(texture, mEngine, transcoder, std::move(ktx2content));
}
void Ktx2Reader::asyncDestroy(Async** async) {
delete *async;
*async = nullptr;
}
Texture* Ktx2Reader::createTexture(ktx2_transcoder* transcoder, const void* data, size_t size,
TransferFunction transfer) {
if (!transcoder->init(data, size)) {
if (!mQuiet) {
utils::slog.e << "BasisU transcoder init failed." << utils::io::endl;
}
return nullptr;
}
if (transcoder->get_dfd_transfer_func() == KTX2_KHR_DF_TRANSFER_LINEAR &&
transfer == TransferFunction::sRGB) {
if (!mQuiet) {
utils::slog.e << "Source texture is marked linear, but client is requesting sRGB."
<< utils::io::endl;
}
return nullptr;
}
if (transcoder->get_dfd_transfer_func() == KTX2_KHR_DF_TRANSFER_SRGB &&
transfer == TransferFunction::LINEAR) {
if (!mQuiet) {
utils::slog.e << "Source texture is marked sRGB, but client is requesting linear."
<< utils::io::endl;
}
return nullptr;
}
// TODO: support cubemaps. For now we use KTX1 for cubemaps because basisu does not support HDR.
if (transcoder->get_faces() == 6) {
if (!mQuiet) {
utils::slog.e << "Cubemaps are not yet supported." << utils::io::endl;
}
return nullptr;
}
// TODO: support texture arrays.
if (transcoder->get_layers() > 1) {
if (!mQuiet) {
utils::slog.e << "Texture arrays are not yet supported." << utils::io::endl;
}
return nullptr;
}
// First pass through, just to make sure we can transcode it.
bool found = false;
Texture::InternalFormat resolvedFormat;
FinalFormatInfo info;
for (Texture::InternalFormat requestedFormat : mRequestedFormats) {
if (!Texture::isTextureFormatSupported(mEngine, requestedFormat)) {
continue;
}
info = getFinalFormatInfo(requestedFormat);
if (!info.isSupported || info.transferFunction != transfer) {
continue;
}
if (!basis_is_format_supported(info.basisFormat, transcoder->get_format())) {
continue;
}
const uint32_t layerIndex = 0;
const uint32_t faceIndex = 0;
for (uint32_t levelIndex = 0; levelIndex < transcoder->get_levels(); levelIndex++) {
basist::ktx2_image_level_info info;
if (!transcoder->get_image_level_info(info, levelIndex, layerIndex, faceIndex)) {
continue;
}
}
found = true;
resolvedFormat = requestedFormat;
break;
}
if (!found) {
if (!mQuiet) {
utils::slog.e << "Unable to decode any of the requested formats." << utils::io::endl;
}
return nullptr;
}
Texture* texture = Texture::Builder()
.width(transcoder->get_width())
.height(transcoder->get_height())
.levels(transcoder->get_levels())
.sampler(Texture::Sampler::SAMPLER_2D)
.format(resolvedFormat)
.build(mEngine);
if (texture == nullptr && !mQuiet) {
utils::slog.e << "Unable to construct texture using BasisU info." << utils::io::endl;
}
#if BASISU_FORCE_DEVEL_MESSAGES
utils::slog.e << "Ktx2Reader created "
<< transcoder->get_width() << "x" << transcoder->get_height() << " texture with format "
<< info.name << utils::io::endl;
#endif
return texture;
}
Texture* Async::getTexture() const noexcept {
return static_cast<FAsync const*>(this)->getTexture();
}
Result Async::doTranscoding() {
return static_cast<FAsync*>(this)->doTranscoding();
}
void Async::uploadImages() {
return static_cast<FAsync*>(this)->uploadImages();
}
} // namespace ktxreader