| /* |
| * Copyright 2020 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "gm/gm.h" |
| #include "include/core/SkCanvas.h" |
| #include "include/core/SkImage.h" |
| #include "include/core/SkStream.h" |
| #include "include/gpu/GrDirectContext.h" |
| #include "include/gpu/GrRecordingContext.h" |
| #include "src/core/SkCompressedDataUtils.h" |
| #include "src/core/SkMipmap.h" |
| #include "src/gpu/ganesh/GrImageContextPriv.h" |
| #include "src/gpu/ganesh/GrRecordingContextPriv.h" |
| #include "src/gpu/ganesh/gl/GrGLDefines_impl.h" |
| #include "src/image/SkImage_Base.h" |
| #include "src/image/SkImage_GpuBase.h" |
| #include "tools/gpu/ProxyUtils.h" |
| |
| #include "tools/Resources.h" |
| |
| //------------------------------------------------------------------------------------------------- |
| struct ImageInfo { |
| SkISize fDim; |
| GrMipmapped fMipmapped; |
| SkImage::CompressionType fCompressionType; |
| }; |
| |
| /* |
| * Get an int from a buffer |
| * This method is unsafe, the caller is responsible for performing a check |
| */ |
| static inline uint32_t get_uint(uint8_t* buffer, uint32_t i) { |
| uint32_t result; |
| memcpy(&result, &(buffer[i]), 4); |
| return result; |
| } |
| |
| // This KTX loader is barely sufficient to load the specific files this GM requires. Use |
| // at your own peril. |
| static sk_sp<SkData> load_ktx(const char* filename, ImageInfo* imageInfo) { |
| SkFILEStream input(filename); |
| if (!input.isValid()) { |
| return nullptr; |
| } |
| |
| constexpr int kKTXIdentifierSize = 12; |
| constexpr int kKTXHeaderSize = kKTXIdentifierSize + 13 * sizeof(uint32_t); |
| uint8_t header[kKTXHeaderSize]; |
| |
| if (input.read(header, kKTXHeaderSize) != kKTXHeaderSize) { |
| return nullptr; |
| } |
| |
| static const uint8_t kExpectedIdentifier[kKTXIdentifierSize] = { |
| 0xAB, 0x4B, 0x54, 0x58, 0x20, 0x31, 0x31, 0xBB, 0x0D, 0x0A, 0x1A, 0x0A |
| }; |
| |
| if (0 != memcmp(header, kExpectedIdentifier, kKTXIdentifierSize)) { |
| return nullptr; |
| } |
| |
| uint32_t endianness = get_uint(header, 12); |
| if (endianness != 0x04030201) { |
| // TODO: need to swap rest of header and, if glTypeSize is > 1, all |
| // the texture data. |
| return nullptr; |
| } |
| |
| uint32_t glType = get_uint(header, 16); |
| SkDEBUGCODE(uint32_t glTypeSize = get_uint(header, 20);) |
| uint32_t glFormat = get_uint(header, 24); |
| uint32_t glInternalFormat = get_uint(header, 28); |
| //uint32_t glBaseInternalFormat = get_uint(header, 32); |
| uint32_t pixelWidth = get_uint(header, 36); |
| uint32_t pixelHeight = get_uint(header, 40); |
| uint32_t pixelDepth = get_uint(header, 44); |
| //uint32_t numberOfArrayElements = get_uint(header, 48); |
| uint32_t numberOfFaces = get_uint(header, 52); |
| int numberOfMipmapLevels = get_uint(header, 56); |
| uint32_t bytesOfKeyValueData = get_uint(header, 60); |
| |
| if (glType != 0 || glFormat != 0) { // only care about compressed data for now |
| return nullptr; |
| } |
| SkASSERT(glTypeSize == 1); // required for compressed data |
| |
| // We only handle these four formats right now |
| switch (glInternalFormat) { |
| case GR_GL_COMPRESSED_ETC1_RGB8: |
| case GR_GL_COMPRESSED_RGB8_ETC2: |
| imageInfo->fCompressionType = SkImage::CompressionType::kETC2_RGB8_UNORM; |
| break; |
| case GR_GL_COMPRESSED_RGB_S3TC_DXT1_EXT: |
| imageInfo->fCompressionType = SkImage::CompressionType::kBC1_RGB8_UNORM; |
| break; |
| case GR_GL_COMPRESSED_RGBA_S3TC_DXT1_EXT: |
| imageInfo->fCompressionType = SkImage::CompressionType::kBC1_RGBA8_UNORM; |
| break; |
| default: |
| return nullptr; |
| } |
| |
| imageInfo->fDim.fWidth = pixelWidth; |
| imageInfo->fDim.fHeight = pixelHeight; |
| |
| if (pixelDepth != 0) { |
| return nullptr; // pixel depth is always zero for 2D textures |
| } |
| |
| if (numberOfFaces != 1) { |
| return nullptr; // we don't support cube maps right now |
| } |
| |
| if (numberOfMipmapLevels == 1) { |
| imageInfo->fMipmapped = GrMipmapped::kNo; |
| } else { |
| int numRequiredMipLevels = SkMipmap::ComputeLevelCount(pixelWidth, pixelHeight)+1; |
| if (numberOfMipmapLevels != numRequiredMipLevels) { |
| return nullptr; |
| } |
| imageInfo->fMipmapped = GrMipmapped::kYes; |
| } |
| |
| if (bytesOfKeyValueData != 0) { |
| return nullptr; |
| } |
| |
| SkTArray<size_t> individualMipOffsets(numberOfMipmapLevels); |
| |
| size_t dataSize = SkCompressedDataSize(imageInfo->fCompressionType, |
| { (int) pixelWidth, (int) pixelHeight }, |
| &individualMipOffsets, |
| imageInfo->fMipmapped == GrMipmapped::kYes); |
| SkASSERT(individualMipOffsets.size() == (size_t) numberOfMipmapLevels); |
| |
| sk_sp<SkData> data = SkData::MakeUninitialized(dataSize); |
| |
| uint8_t* dest = (uint8_t*) data->writable_data(); |
| |
| size_t offset = 0; |
| for (int i = 0; i < numberOfMipmapLevels; ++i) { |
| uint32_t imageSize; |
| |
| if (input.read(&imageSize, 4) != 4) { |
| return nullptr; |
| } |
| |
| SkASSERT(offset + imageSize <= dataSize); |
| SkASSERT(offset == individualMipOffsets[i]); |
| |
| if (input.read(&dest[offset], imageSize) != imageSize) { |
| return nullptr; |
| } |
| |
| offset += imageSize; |
| } |
| |
| return data; |
| } |
| |
| //------------------------------------------------------------------------------------------------- |
| typedef uint32_t DWORD; |
| |
| // Values for the DDS_PIXELFORMAT 'dwFlags' field |
| constexpr unsigned int kDDPF_FOURCC = 0x4; |
| |
| struct DDS_PIXELFORMAT { |
| DWORD dwSize; |
| DWORD dwFlags; |
| DWORD dwFourCC; |
| DWORD dwRGBBitCount; |
| DWORD dwRBitMask; |
| DWORD dwGBitMask; |
| DWORD dwBBitMask; |
| DWORD dwABitMask; |
| }; |
| |
| // Values for the DDS_HEADER 'dwFlags' field |
| constexpr unsigned int kDDSD_CAPS = 0x1; // required |
| constexpr unsigned int kDDSD_HEIGHT = 0x2; // required |
| constexpr unsigned int kDDSD_WIDTH = 0x4; // required |
| constexpr unsigned int kDDSD_PITCH = 0x8; |
| constexpr unsigned int kDDSD_PIXELFORMAT = 0x001000; // required |
| constexpr unsigned int kDDSD_MIPMAPCOUNT = 0x020000; |
| constexpr unsigned int kDDSD_LINEARSIZE = 0x080000; |
| constexpr unsigned int kDDSD_DEPTH = 0x800000; |
| |
| constexpr unsigned int kDDSD_REQUIRED = kDDSD_CAPS | kDDSD_HEIGHT | kDDSD_WIDTH | kDDSD_PIXELFORMAT; |
| |
| typedef struct { |
| DWORD dwSize; |
| DWORD dwFlags; |
| DWORD dwHeight; |
| DWORD dwWidth; |
| DWORD dwPitchOrLinearSize; |
| DWORD dwDepth; |
| DWORD dwMipMapCount; |
| DWORD dwReserved1[11]; |
| DDS_PIXELFORMAT ddspf; |
| DWORD dwCaps; |
| DWORD dwCaps2; |
| DWORD dwCaps3; |
| DWORD dwCaps4; |
| DWORD dwReserved2; |
| } DDS_HEADER; |
| |
| // This DDS loader is barely sufficient to load the specific files this GM requires. Use |
| // at your own peril. |
| static sk_sp<SkData> load_dds(const char* filename, ImageInfo* imageInfo) { |
| SkFILEStream input(filename); |
| if (!input.isValid()) { |
| return nullptr; |
| } |
| |
| constexpr uint32_t kMagic = 0x20534444; |
| uint32_t magic; |
| |
| if (input.read(&magic, 4) != 4) { |
| return nullptr; |
| } |
| |
| if (magic != kMagic) { |
| return nullptr; |
| } |
| |
| constexpr size_t kDDSHeaderSize = sizeof(DDS_HEADER); |
| static_assert(kDDSHeaderSize == 124); |
| constexpr size_t kDDSPixelFormatSize = sizeof(DDS_PIXELFORMAT); |
| static_assert(kDDSPixelFormatSize == 32); |
| |
| DDS_HEADER header; |
| |
| if (input.read(&header, kDDSHeaderSize) != kDDSHeaderSize) { |
| return nullptr; |
| } |
| |
| if (header.dwSize != kDDSHeaderSize || |
| header.ddspf.dwSize != kDDSPixelFormatSize) { |
| return nullptr; |
| } |
| |
| if ((header.dwFlags & kDDSD_REQUIRED) != kDDSD_REQUIRED) { |
| return nullptr; |
| } |
| |
| if (header.dwFlags & (kDDSD_PITCH | kDDSD_LINEARSIZE | kDDSD_DEPTH)) { |
| // TODO: support these features |
| } |
| |
| imageInfo->fDim.fWidth = header.dwWidth; |
| imageInfo->fDim.fHeight = header.dwHeight; |
| |
| int numberOfMipmapLevels = 1; |
| if (header.dwFlags & kDDSD_MIPMAPCOUNT) { |
| if (header.dwMipMapCount == 1) { |
| imageInfo->fMipmapped = GrMipmapped::kNo; |
| } else { |
| int numRequiredLevels = SkMipmap::ComputeLevelCount(header.dwWidth, header.dwHeight)+1; |
| if (header.dwMipMapCount != (unsigned) numRequiredLevels) { |
| return nullptr; |
| } |
| imageInfo->fMipmapped = GrMipmapped::kYes; |
| numberOfMipmapLevels = numRequiredLevels; |
| } |
| } else { |
| imageInfo->fMipmapped = GrMipmapped::kNo; |
| } |
| |
| if (!(header.ddspf.dwFlags & kDDPF_FOURCC)) { |
| return nullptr; |
| } |
| |
| // We only handle these one format right now |
| switch (header.ddspf.dwFourCC) { |
| case 0x31545844: // DXT1 |
| imageInfo->fCompressionType = SkImage::CompressionType::kBC1_RGB8_UNORM; |
| break; |
| default: |
| return nullptr; |
| } |
| |
| SkTArray<size_t> individualMipOffsets(numberOfMipmapLevels); |
| |
| size_t dataSize = SkCompressedDataSize(imageInfo->fCompressionType, |
| { (int) header.dwWidth, (int) header.dwHeight }, |
| &individualMipOffsets, |
| imageInfo->fMipmapped == GrMipmapped::kYes); |
| SkASSERT(individualMipOffsets.size() == (size_t) numberOfMipmapLevels); |
| |
| sk_sp<SkData> data = SkData::MakeUninitialized(dataSize); |
| |
| uint8_t* dest = (uint8_t*) data->writable_data(); |
| |
| size_t amountRead = input.read(dest, dataSize); |
| if (amountRead != dataSize) { |
| return nullptr; |
| } |
| |
| return data; |
| } |
| |
| //------------------------------------------------------------------------------------------------- |
| static sk_sp<SkImage> data_to_img(GrDirectContext *direct, sk_sp<SkData> data, |
| const ImageInfo& info) { |
| if (direct) { |
| return SkImage::MakeTextureFromCompressed(direct, std::move(data), |
| info.fDim.fWidth, |
| info.fDim.fHeight, |
| info.fCompressionType, |
| info.fMipmapped); |
| } else { |
| return SkImage::MakeRasterFromCompressed(std::move(data), |
| info.fDim.fWidth, |
| info.fDim.fHeight, |
| info.fCompressionType); |
| } |
| } |
| |
| namespace skiagm { |
| |
| // This GM exercises our handling of some of the more exotic formats using externally |
| // generated content. Right now it only tests ETC1 and BC1. |
| class ExoticFormatsGM : public GM { |
| public: |
| ExoticFormatsGM() { |
| this->setBGColor(SK_ColorBLACK); |
| } |
| |
| protected: |
| SkString onShortName() override { |
| return SkString("exoticformats"); |
| } |
| |
| SkISize onISize() override { |
| return SkISize::Make(2*kImgWidthHeight + 3 * kPad, kImgWidthHeight + 2 * kPad); |
| } |
| |
| bool loadImages(GrDirectContext *direct) { |
| SkASSERT(!fETC1Image && !fBC1Image); |
| |
| { |
| ImageInfo info; |
| sk_sp<SkData> data = load_ktx(GetResourcePath("images/flower-etc1.ktx").c_str(), &info); |
| if (data) { |
| SkASSERT(info.fDim.equals(kImgWidthHeight, kImgWidthHeight)); |
| SkASSERT(info.fMipmapped == GrMipmapped::kNo); |
| SkASSERT(info.fCompressionType == SkImage::CompressionType::kETC2_RGB8_UNORM); |
| |
| fETC1Image = data_to_img(direct, std::move(data), info); |
| } else { |
| SkDebugf("failed to load flower-etc1.ktx\n"); |
| return false; |
| } |
| } |
| |
| { |
| ImageInfo info; |
| sk_sp<SkData> data = load_dds(GetResourcePath("images/flower-bc1.dds").c_str(), &info); |
| if (data) { |
| SkASSERT(info.fDim.equals(kImgWidthHeight, kImgWidthHeight)); |
| SkASSERT(info.fMipmapped == GrMipmapped::kNo); |
| SkASSERT(info.fCompressionType == SkImage::CompressionType::kBC1_RGB8_UNORM); |
| |
| fBC1Image = data_to_img(direct, std::move(data), info); |
| } else { |
| SkDebugf("failed to load flower-bc1.dds\n"); |
| return false; |
| } |
| } |
| |
| return true; |
| } |
| |
| void drawImage(SkCanvas* canvas, SkImage* image, int x, int y) { |
| if (!image) { |
| return; |
| } |
| |
| bool isCompressed = false; |
| if (image->isTextureBacked()) { |
| const GrCaps* caps = as_IB(image)->context()->priv().caps(); |
| GrTextureProxy* proxy = sk_gpu_test::GetTextureImageProxy(image, |
| canvas->recordingContext()); |
| isCompressed = caps->isFormatCompressed(proxy->backendFormat()); |
| } |
| |
| canvas->drawImage(image, x, y); |
| |
| if (!isCompressed) { |
| // Make it obvious which drawImages used decompressed images |
| SkRect r = SkRect::MakeXYWH(x, y, kImgWidthHeight, kImgWidthHeight); |
| SkPaint paint; |
| paint.setColor(SK_ColorRED); |
| paint.setStyle(SkPaint::kStroke_Style); |
| paint.setStrokeWidth(2.0f); |
| canvas->drawRect(r, paint); |
| } |
| } |
| |
| DrawResult onGpuSetup(GrDirectContext* dContext, SkString* errorMsg) override { |
| if (dContext && dContext->abandoned()) { |
| // This isn't a GpuGM so a null 'context' is okay but an abandoned context |
| // if forbidden. |
| return DrawResult::kSkip; |
| } |
| |
| if (!this->loadImages(dContext)) { |
| *errorMsg = "Failed to create images."; |
| return DrawResult::kFail; |
| } |
| |
| return DrawResult::kOk; |
| } |
| |
| void onGpuTeardown() override { |
| fETC1Image = nullptr; |
| fBC1Image = nullptr; |
| } |
| |
| void onDraw(SkCanvas* canvas) override { |
| SkASSERT(fETC1Image && fBC1Image); |
| |
| this->drawImage(canvas, fETC1Image.get(), kPad, kPad); |
| this->drawImage(canvas, fBC1Image.get(), kImgWidthHeight + 2 * kPad, kPad); |
| } |
| |
| private: |
| static const int kImgWidthHeight = 128; |
| static const int kPad = 4; |
| |
| sk_sp<SkImage> fETC1Image; |
| sk_sp<SkImage> fBC1Image; |
| |
| using INHERITED = GM; |
| }; |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| DEF_GM(return new ExoticFormatsGM;) |
| } // namespace skiagm |