| /* |
| * Copyright 2019 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef GrDataUtils_DEFINED |
| #define GrDataUtils_DEFINED |
| |
| #include "include/core/SkColor.h" |
| #include "include/private/base/SkTArray.h" |
| #include "include/private/gpu/ganesh/GrTypesPriv.h" |
| |
| class GrImageInfo; |
| class GrCPixmap; |
| class GrPixmap; |
| class SkPixmap; |
| |
| size_t GrNumBlocks(SkImage::CompressionType, SkISize baseDimensions); |
| |
| // Returns a value that can be used to set rowBytes for a transfer function. |
| size_t GrCompressedRowBytes(SkImage::CompressionType, int w); |
| |
| // Return the pixel dimensions of a compressed texture. The topmost levels |
| // of a compressed mipmapped texture (i.e., 1x1 or 2x2) still occupy a full |
| // block and thus objectively take up more pixels (e.g., 4x4 pixels for ETC1). |
| SkISize GrCompressedDimensions(SkImage::CompressionType, SkISize baseDimensions); |
| |
| // Compute the size of the buffer required to hold all the mipLevels of the specified type |
| // of data when all rowBytes are tight. |
| // Note there may still be padding between the mipLevels to meet alignment requirements. |
| size_t GrComputeTightCombinedBufferSize(size_t bytesPerPixel, SkISize baseDimensions, |
| SkTArray<size_t>* individualMipOffsets, int mipLevelCount); |
| |
| void GrFillInCompressedData(SkImage::CompressionType, SkISize dimensions, GrMipmapped, char* dest, |
| const SkColor4f& color); |
| |
| bool GrConvertPixels(const GrPixmap& dst, const GrCPixmap& src, bool flipY = false); |
| |
| /** Clears the dst image to a constant color. */ |
| bool GrClearImage(const GrImageInfo& dstInfo, void* dst, size_t dstRB, std::array<float, 4> color); |
| |
| #if GR_TEST_UTILS |
| /** |
| * BC1 compress an image that contains only either opaque black or transparent black and one |
| * other color. |
| * opaque pixmaps -> kBC1_RGB8_UNORM |
| * transparent pixmaps -> kBC1_RGBA8_UNORM |
| */ |
| void GrTwoColorBC1Compress(const SkPixmap& pixmap, SkColor otherColor, char* dstPixels); |
| #endif |
| |
| #endif |