863 lines
29 KiB
C++
863 lines
29 KiB
C++
//-------------------------------------------------------------------------------------
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// DirectXTexCompress.cpp
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//
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// DirectX Texture Library - Texture compression
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//
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// Licensed under the MIT License.
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//
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// http://go.microsoft.com/fwlink/?LinkId=248926
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//-------------------------------------------------------------------------------------
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#include "DirectXTexP.h"
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#ifdef _OPENMP
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#include <omp.h>
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#pragma warning(disable : 4616 6993)
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#endif
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#include "BC.h"
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using namespace DirectX;
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#if defined(__clang__)
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#define ALIGNAS(x) alignas(x)
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#else
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#define ALGINAS(x) __declspec(align(x))
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#endif
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namespace
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{
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inline uint32_t GetBCFlags(_In_ TEX_COMPRESS_FLAGS compress) noexcept
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{
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static_assert(static_cast<int>(TEX_COMPRESS_RGB_DITHER) == static_cast<int>(BC_FLAGS_DITHER_RGB), "TEX_COMPRESS_* flags should match BC_FLAGS_*");
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static_assert(static_cast<int>(TEX_COMPRESS_A_DITHER) == static_cast<int>(BC_FLAGS_DITHER_A), "TEX_COMPRESS_* flags should match BC_FLAGS_*");
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static_assert(static_cast<int>(TEX_COMPRESS_DITHER) == static_cast<int>(BC_FLAGS_DITHER_RGB | BC_FLAGS_DITHER_A), "TEX_COMPRESS_* flags should match BC_FLAGS_*");
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static_assert(static_cast<int>(TEX_COMPRESS_UNIFORM) == static_cast<int>(BC_FLAGS_UNIFORM), "TEX_COMPRESS_* flags should match BC_FLAGS_*");
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static_assert(static_cast<int>(TEX_COMPRESS_BC7_USE_3SUBSETS) == static_cast<int>(BC_FLAGS_USE_3SUBSETS), "TEX_COMPRESS_* flags should match BC_FLAGS_*");
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static_assert(static_cast<int>(TEX_COMPRESS_BC7_QUICK) == static_cast<int>(BC_FLAGS_FORCE_BC7_MODE6), "TEX_COMPRESS_* flags should match BC_FLAGS_*");
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return (compress & (BC_FLAGS_DITHER_RGB | BC_FLAGS_DITHER_A | BC_FLAGS_UNIFORM | BC_FLAGS_USE_3SUBSETS | BC_FLAGS_FORCE_BC7_MODE6));
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}
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inline TEX_FILTER_FLAGS GetSRGBFlags(_In_ TEX_COMPRESS_FLAGS compress) noexcept
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{
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static_assert(TEX_FILTER_SRGB_IN == 0x1000000, "TEX_FILTER_SRGB flag values don't match TEX_FILTER_SRGB_MASK");
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static_assert(static_cast<int>(TEX_COMPRESS_SRGB_IN) == static_cast<int>(TEX_FILTER_SRGB_IN), "TEX_COMPRESS_SRGB* should match TEX_FILTER_SRGB*");
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static_assert(static_cast<int>(TEX_COMPRESS_SRGB_OUT) == static_cast<int>(TEX_FILTER_SRGB_OUT), "TEX_COMPRESS_SRGB* should match TEX_FILTER_SRGB*");
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static_assert(static_cast<int>(TEX_COMPRESS_SRGB) == static_cast<int>(TEX_FILTER_SRGB), "TEX_COMPRESS_SRGB* should match TEX_FILTER_SRGB*");
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return static_cast<TEX_FILTER_FLAGS>(compress & TEX_FILTER_SRGB_MASK);
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}
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inline bool DetermineEncoderSettings(_In_ DXGI_FORMAT format, _Out_ BC_ENCODE& pfEncode, _Out_ size_t& blocksize, _Out_ TEX_FILTER_FLAGS& cflags) noexcept
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{
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switch (format)
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{
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case DXGI_FORMAT_BC1_UNORM:
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case DXGI_FORMAT_BC1_UNORM_SRGB: pfEncode = nullptr; blocksize = 8; cflags = TEX_FILTER_DEFAULT; break;
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case DXGI_FORMAT_BC2_UNORM:
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case DXGI_FORMAT_BC2_UNORM_SRGB: pfEncode = D3DXEncodeBC2; blocksize = 16; cflags = TEX_FILTER_DEFAULT; break;
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case DXGI_FORMAT_BC3_UNORM:
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case DXGI_FORMAT_BC3_UNORM_SRGB: pfEncode = D3DXEncodeBC3; blocksize = 16; cflags = TEX_FILTER_DEFAULT; break;
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case DXGI_FORMAT_BC4_UNORM: pfEncode = D3DXEncodeBC4U; blocksize = 8; cflags = TEX_FILTER_RGB_COPY_RED; break;
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case DXGI_FORMAT_BC4_SNORM: pfEncode = D3DXEncodeBC4S; blocksize = 8; cflags = TEX_FILTER_RGB_COPY_RED; break;
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case DXGI_FORMAT_BC5_UNORM: pfEncode = D3DXEncodeBC5U; blocksize = 16; cflags = TEX_FILTER_RGB_COPY_RED | TEX_FILTER_RGB_COPY_GREEN; break;
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case DXGI_FORMAT_BC5_SNORM: pfEncode = D3DXEncodeBC5S; blocksize = 16; cflags = TEX_FILTER_RGB_COPY_RED | TEX_FILTER_RGB_COPY_GREEN; break;
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case DXGI_FORMAT_BC6H_UF16: pfEncode = D3DXEncodeBC6HU; blocksize = 16; cflags = TEX_FILTER_DEFAULT; break;
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case DXGI_FORMAT_BC6H_SF16: pfEncode = D3DXEncodeBC6HS; blocksize = 16; cflags = TEX_FILTER_DEFAULT; break;
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case DXGI_FORMAT_BC7_UNORM:
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case DXGI_FORMAT_BC7_UNORM_SRGB: pfEncode = D3DXEncodeBC7; blocksize = 16; cflags = TEX_FILTER_DEFAULT; break;
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default: pfEncode = nullptr; blocksize = 0; cflags = TEX_FILTER_DEFAULT; return false;
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}
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return true;
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}
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//-------------------------------------------------------------------------------------
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HRESULT CompressBC(
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const Image& image,
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const Image& result,
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uint32_t bcflags,
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TEX_FILTER_FLAGS srgb,
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float threshold) noexcept
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{
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if (!image.pixels || !result.pixels)
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return E_POINTER;
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assert(image.width == result.width);
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assert(image.height == result.height);
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const DXGI_FORMAT format = image.format;
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size_t sbpp = BitsPerPixel(format);
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if (!sbpp)
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return E_FAIL;
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if (sbpp < 8)
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{
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// We don't support compressing from monochrome (DXGI_FORMAT_R1_UNORM)
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return HRESULT_FROM_WIN32(ERROR_NOT_SUPPORTED);
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}
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// Round to bytes
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sbpp = (sbpp + 7) / 8;
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uint8_t *pDest = result.pixels;
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// Determine BC format encoder
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BC_ENCODE pfEncode;
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size_t blocksize;
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TEX_FILTER_FLAGS cflags;
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if (!DetermineEncoderSettings(result.format, pfEncode, blocksize, cflags))
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return HRESULT_FROM_WIN32(ERROR_NOT_SUPPORTED);
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ALIGNAS(16) XMVECTOR temp[16];
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const uint8_t *pSrc = image.pixels;
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const uint8_t *pEnd = image.pixels + image.slicePitch;
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const size_t rowPitch = image.rowPitch;
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for (size_t h = 0; h < image.height; h += 4)
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{
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const uint8_t *sptr = pSrc;
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uint8_t* dptr = pDest;
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size_t ph = std::min<size_t>(4, image.height - h);
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size_t w = 0;
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for (size_t count = 0; (count < result.rowPitch) && (w < image.width); count += blocksize, w += 4)
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{
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size_t pw = std::min<size_t>(4, image.width - w);
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assert(pw > 0 && ph > 0);
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ptrdiff_t bytesLeft = pEnd - sptr;
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assert(bytesLeft > 0);
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size_t bytesToRead = std::min<size_t>(rowPitch, static_cast<size_t>(bytesLeft));
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if (!_LoadScanline(&temp[0], pw, sptr, bytesToRead, format))
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return E_FAIL;
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if (ph > 1)
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{
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bytesToRead = std::min<size_t>(rowPitch, static_cast<size_t>(bytesLeft) - rowPitch);
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if (!_LoadScanline(&temp[4], pw, sptr + rowPitch, bytesToRead, format))
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return E_FAIL;
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if (ph > 2)
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{
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bytesToRead = std::min<size_t>(rowPitch, static_cast<size_t>(bytesLeft) - rowPitch * 2);
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if (!_LoadScanline(&temp[8], pw, sptr + rowPitch * 2, bytesToRead, format))
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return E_FAIL;
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if (ph > 3)
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{
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bytesToRead = std::min<size_t>(rowPitch, static_cast<size_t>(bytesLeft) - rowPitch * 3);
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if (!_LoadScanline(&temp[12], pw, sptr + rowPitch * 3, bytesToRead, format))
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return E_FAIL;
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}
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}
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}
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if (pw != 4 || ph != 4)
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{
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// Replicate pixels for partial block
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static const size_t uSrc[] = { 0, 0, 0, 1 };
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if (pw < 4)
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{
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for (size_t t = 0; t < ph && t < 4; ++t)
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{
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for (size_t s = pw; s < 4; ++s)
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{
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#pragma prefast(suppress: 26000, "PREFAST false positive")
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temp[(t << 2) | s] = temp[(t << 2) | uSrc[s]];
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}
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}
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}
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if (ph < 4)
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{
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for (size_t t = ph; t < 4; ++t)
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{
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for (size_t s = 0; s < 4; ++s)
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{
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#pragma prefast(suppress: 26000, "PREFAST false positive")
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temp[(t << 2) | s] = temp[(uSrc[t] << 2) | s];
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}
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}
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}
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}
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_ConvertScanline(temp, 16, result.format, format, cflags | srgb);
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if (pfEncode)
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pfEncode(dptr, temp, bcflags);
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else
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D3DXEncodeBC1(dptr, temp, threshold, bcflags);
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sptr += sbpp * 4;
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dptr += blocksize;
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}
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pSrc += rowPitch * 4;
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pDest += result.rowPitch;
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}
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return S_OK;
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}
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//-------------------------------------------------------------------------------------
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#ifdef _OPENMP
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HRESULT CompressBC_Parallel(
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const Image& image,
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const Image& result,
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uint32_t bcflags,
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TEX_FILTER_FLAGS srgb,
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float threshold) noexcept
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{
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if (!image.pixels || !result.pixels)
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return E_POINTER;
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assert(image.width == result.width);
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assert(image.height == result.height);
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const DXGI_FORMAT format = image.format;
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size_t sbpp = BitsPerPixel(format);
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if (!sbpp)
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return E_FAIL;
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if (sbpp < 8)
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{
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// We don't support compressing from monochrome (DXGI_FORMAT_R1_UNORM)
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return HRESULT_FROM_WIN32(ERROR_NOT_SUPPORTED);
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}
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// Round to bytes
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sbpp = (sbpp + 7) / 8;
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const uint8_t *pEnd = image.pixels + image.slicePitch;
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// Determine BC format encoder
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BC_ENCODE pfEncode;
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size_t blocksize;
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TEX_FILTER_FLAGS cflags;
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if (!DetermineEncoderSettings(result.format, pfEncode, blocksize, cflags))
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return HRESULT_FROM_WIN32(ERROR_NOT_SUPPORTED);
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// Refactored version of loop to support parallel independance
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const size_t nBlocks = std::max<size_t>(1, (image.width + 3) / 4) * std::max<size_t>(1, (image.height + 3) / 4);
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bool fail = false;
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#pragma omp parallel for
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for (int nb = 0; nb < static_cast<int>(nBlocks); ++nb)
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{
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int nbWidth = std::max<int>(1, int((image.width + 3) / 4));
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int y = nb / nbWidth;
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int x = (nb - (y*nbWidth)) * 4;
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y *= 4;
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assert((x >= 0) && (x < int(image.width)));
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assert((y >= 0) && (y < int(image.height)));
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size_t rowPitch = image.rowPitch;
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const uint8_t *pSrc = image.pixels + (size_t(y)*rowPitch) + (size_t(x)*sbpp);
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uint8_t *pDest = result.pixels + (size_t(nb)*blocksize);
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size_t ph = std::min<size_t>(4, image.height - size_t(y));
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size_t pw = std::min<size_t>(4, image.width - size_t(x));
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assert(pw > 0 && ph > 0);
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ptrdiff_t bytesLeft = pEnd - pSrc;
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assert(bytesLeft > 0);
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size_t bytesToRead = std::min<size_t>(rowPitch, size_t(bytesLeft));
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ALIGNAS(16) XMVECTOR temp[16];
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if (!_LoadScanline(&temp[0], pw, pSrc, bytesToRead, format))
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fail = true;
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if (ph > 1)
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{
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bytesToRead = std::min<size_t>(rowPitch, size_t(bytesLeft) - rowPitch);
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if (!_LoadScanline(&temp[4], pw, pSrc + rowPitch, bytesToRead, format))
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fail = true;
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if (ph > 2)
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{
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bytesToRead = std::min<size_t>(rowPitch, size_t(bytesLeft) - rowPitch * 2);
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if (!_LoadScanline(&temp[8], pw, pSrc + rowPitch * 2, bytesToRead, format))
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fail = true;
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if (ph > 3)
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{
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bytesToRead = std::min<size_t>(rowPitch, size_t(bytesLeft) - rowPitch * 3);
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if (!_LoadScanline(&temp[12], pw, pSrc + rowPitch * 3, bytesToRead, format))
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fail = true;
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}
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}
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}
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if (pw != 4 || ph != 4)
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{
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// Replicate pixels for partial block
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static const size_t uSrc[] = { 0, 0, 0, 1 };
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if (pw < 4)
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{
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for (size_t t = 0; t < ph && t < 4; ++t)
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{
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for (size_t s = pw; s < 4; ++s)
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{
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temp[(t << 2) | s] = temp[(t << 2) | uSrc[s]];
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}
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}
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}
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if (ph < 4)
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{
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for (size_t t = ph; t < 4; ++t)
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{
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for (size_t s = 0; s < 4; ++s)
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{
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temp[(t << 2) | s] = temp[(uSrc[t] << 2) | s];
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}
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}
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}
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}
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_ConvertScanline(temp, 16, result.format, format, cflags | srgb);
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if (pfEncode)
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pfEncode(pDest, temp, bcflags);
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else
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D3DXEncodeBC1(pDest, temp, threshold, bcflags);
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}
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return (fail) ? E_FAIL : S_OK;
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}
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#endif // _OPENMP
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//-------------------------------------------------------------------------------------
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DXGI_FORMAT DefaultDecompress(_In_ DXGI_FORMAT format) noexcept
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{
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switch (format)
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{
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case DXGI_FORMAT_BC1_TYPELESS:
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case DXGI_FORMAT_BC1_UNORM:
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case DXGI_FORMAT_BC2_TYPELESS:
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case DXGI_FORMAT_BC2_UNORM:
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case DXGI_FORMAT_BC3_TYPELESS:
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case DXGI_FORMAT_BC3_UNORM:
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case DXGI_FORMAT_BC7_TYPELESS:
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case DXGI_FORMAT_BC7_UNORM:
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return DXGI_FORMAT_R8G8B8A8_UNORM;
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case DXGI_FORMAT_BC1_UNORM_SRGB:
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case DXGI_FORMAT_BC2_UNORM_SRGB:
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case DXGI_FORMAT_BC3_UNORM_SRGB:
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case DXGI_FORMAT_BC7_UNORM_SRGB:
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return DXGI_FORMAT_R8G8B8A8_UNORM_SRGB;
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case DXGI_FORMAT_BC4_TYPELESS:
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case DXGI_FORMAT_BC4_UNORM:
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return DXGI_FORMAT_R8_UNORM;
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case DXGI_FORMAT_BC4_SNORM:
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return DXGI_FORMAT_R8_SNORM;
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case DXGI_FORMAT_BC5_TYPELESS:
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case DXGI_FORMAT_BC5_UNORM:
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return DXGI_FORMAT_R8G8_UNORM;
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case DXGI_FORMAT_BC5_SNORM:
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return DXGI_FORMAT_R8G8_SNORM;
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case DXGI_FORMAT_BC6H_TYPELESS:
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case DXGI_FORMAT_BC6H_UF16:
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case DXGI_FORMAT_BC6H_SF16:
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// We could use DXGI_FORMAT_R32G32B32_FLOAT here since BC6H is always Alpha 1.0,
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// but this format is more supported by viewers
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return DXGI_FORMAT_R32G32B32A32_FLOAT;
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default:
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return DXGI_FORMAT_UNKNOWN;
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}
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}
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//-------------------------------------------------------------------------------------
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HRESULT DecompressBC(_In_ const Image& cImage, _In_ const Image& result) noexcept
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{
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if (!cImage.pixels || !result.pixels)
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return E_POINTER;
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assert(cImage.width == result.width);
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assert(cImage.height == result.height);
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const DXGI_FORMAT format = result.format;
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size_t dbpp = BitsPerPixel(format);
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if (!dbpp)
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return E_FAIL;
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if (dbpp < 8)
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{
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// We don't support decompressing to monochrome (DXGI_FORMAT_R1_UNORM)
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return HRESULT_FROM_WIN32(ERROR_NOT_SUPPORTED);
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}
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// Round to bytes
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dbpp = (dbpp + 7) / 8;
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uint8_t *pDest = result.pixels;
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if (!pDest)
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return E_POINTER;
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// Promote "typeless" BC formats
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DXGI_FORMAT cformat;
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switch (cImage.format)
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{
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case DXGI_FORMAT_BC1_TYPELESS: cformat = DXGI_FORMAT_BC1_UNORM; break;
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case DXGI_FORMAT_BC2_TYPELESS: cformat = DXGI_FORMAT_BC2_UNORM; break;
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case DXGI_FORMAT_BC3_TYPELESS: cformat = DXGI_FORMAT_BC3_UNORM; break;
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case DXGI_FORMAT_BC4_TYPELESS: cformat = DXGI_FORMAT_BC4_UNORM; break;
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case DXGI_FORMAT_BC5_TYPELESS: cformat = DXGI_FORMAT_BC5_UNORM; break;
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case DXGI_FORMAT_BC6H_TYPELESS: cformat = DXGI_FORMAT_BC6H_UF16; break;
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case DXGI_FORMAT_BC7_TYPELESS: cformat = DXGI_FORMAT_BC7_UNORM; break;
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default: cformat = cImage.format; break;
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}
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// Determine BC format decoder
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BC_DECODE pfDecode;
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size_t sbpp;
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switch (cformat)
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{
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case DXGI_FORMAT_BC1_UNORM:
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case DXGI_FORMAT_BC1_UNORM_SRGB: pfDecode = D3DXDecodeBC1; sbpp = 8; break;
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case DXGI_FORMAT_BC2_UNORM:
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case DXGI_FORMAT_BC2_UNORM_SRGB: pfDecode = D3DXDecodeBC2; sbpp = 16; break;
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case DXGI_FORMAT_BC3_UNORM:
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case DXGI_FORMAT_BC3_UNORM_SRGB: pfDecode = D3DXDecodeBC3; sbpp = 16; break;
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case DXGI_FORMAT_BC4_UNORM: pfDecode = D3DXDecodeBC4U; sbpp = 8; break;
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case DXGI_FORMAT_BC4_SNORM: pfDecode = D3DXDecodeBC4S; sbpp = 8; break;
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case DXGI_FORMAT_BC5_UNORM: pfDecode = D3DXDecodeBC5U; sbpp = 16; break;
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case DXGI_FORMAT_BC5_SNORM: pfDecode = D3DXDecodeBC5S; sbpp = 16; break;
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|
case DXGI_FORMAT_BC6H_UF16: pfDecode = D3DXDecodeBC6HU; sbpp = 16; break;
|
|
case DXGI_FORMAT_BC6H_SF16: pfDecode = D3DXDecodeBC6HS; sbpp = 16; break;
|
|
case DXGI_FORMAT_BC7_UNORM:
|
|
case DXGI_FORMAT_BC7_UNORM_SRGB: pfDecode = D3DXDecodeBC7; sbpp = 16; break;
|
|
default:
|
|
return HRESULT_FROM_WIN32(ERROR_NOT_SUPPORTED);
|
|
}
|
|
|
|
ALIGNAS(16) XMVECTOR temp[16];
|
|
const uint8_t *pSrc = cImage.pixels;
|
|
const size_t rowPitch = result.rowPitch;
|
|
for (size_t h = 0; h < cImage.height; h += 4)
|
|
{
|
|
const uint8_t *sptr = pSrc;
|
|
uint8_t* dptr = pDest;
|
|
size_t ph = std::min<size_t>(4, cImage.height - h);
|
|
size_t w = 0;
|
|
for (size_t count = 0; (count < cImage.rowPitch) && (w < cImage.width); count += sbpp, w += 4)
|
|
{
|
|
pfDecode(temp, sptr);
|
|
_ConvertScanline(temp, 16, format, cformat, TEX_FILTER_DEFAULT);
|
|
|
|
size_t pw = std::min<size_t>(4, cImage.width - w);
|
|
assert(pw > 0 && ph > 0);
|
|
|
|
if (!_StoreScanline(dptr, rowPitch, format, &temp[0], pw))
|
|
return E_FAIL;
|
|
|
|
if (ph > 1)
|
|
{
|
|
if (!_StoreScanline(dptr + rowPitch, rowPitch, format, &temp[4], pw))
|
|
return E_FAIL;
|
|
|
|
if (ph > 2)
|
|
{
|
|
if (!_StoreScanline(dptr + rowPitch * 2, rowPitch, format, &temp[8], pw))
|
|
return E_FAIL;
|
|
|
|
if (ph > 3)
|
|
{
|
|
if (!_StoreScanline(dptr + rowPitch * 3, rowPitch, format, &temp[12], pw))
|
|
return E_FAIL;
|
|
}
|
|
}
|
|
}
|
|
|
|
sptr += sbpp;
|
|
dptr += dbpp * 4;
|
|
}
|
|
|
|
pSrc += cImage.rowPitch;
|
|
pDest += rowPitch * 4;
|
|
}
|
|
|
|
return S_OK;
|
|
}
|
|
}
|
|
|
|
//-------------------------------------------------------------------------------------
|
|
namespace DirectX
|
|
{
|
|
bool _IsAlphaAllOpaqueBC(_In_ const Image& cImage) noexcept;
|
|
// Also used by Image
|
|
|
|
bool _IsAlphaAllOpaqueBC(_In_ const Image& cImage) noexcept
|
|
{
|
|
if (!cImage.pixels)
|
|
return false;
|
|
|
|
// Promote "typeless" BC formats
|
|
DXGI_FORMAT cformat;
|
|
switch (cImage.format)
|
|
{
|
|
case DXGI_FORMAT_BC1_TYPELESS: cformat = DXGI_FORMAT_BC1_UNORM; break;
|
|
case DXGI_FORMAT_BC2_TYPELESS: cformat = DXGI_FORMAT_BC2_UNORM; break;
|
|
case DXGI_FORMAT_BC3_TYPELESS: cformat = DXGI_FORMAT_BC3_UNORM; break;
|
|
case DXGI_FORMAT_BC7_TYPELESS: cformat = DXGI_FORMAT_BC7_UNORM; break;
|
|
default: cformat = cImage.format; break;
|
|
}
|
|
|
|
// Determine BC format decoder
|
|
BC_DECODE pfDecode;
|
|
size_t sbpp;
|
|
switch (cformat)
|
|
{
|
|
case DXGI_FORMAT_BC1_UNORM:
|
|
case DXGI_FORMAT_BC1_UNORM_SRGB: pfDecode = D3DXDecodeBC1; sbpp = 8; break;
|
|
case DXGI_FORMAT_BC2_UNORM:
|
|
case DXGI_FORMAT_BC2_UNORM_SRGB: pfDecode = D3DXDecodeBC2; sbpp = 16; break;
|
|
case DXGI_FORMAT_BC3_UNORM:
|
|
case DXGI_FORMAT_BC3_UNORM_SRGB: pfDecode = D3DXDecodeBC3; sbpp = 16; break;
|
|
case DXGI_FORMAT_BC7_UNORM:
|
|
case DXGI_FORMAT_BC7_UNORM_SRGB: pfDecode = D3DXDecodeBC7; sbpp = 16; break;
|
|
default:
|
|
// BC4, BC5, and BC6 don't have alpha channels
|
|
return false;
|
|
}
|
|
|
|
// Scan blocks for non-opaque alpha
|
|
static const XMVECTORF32 threshold = { { { 0.99f, 0.99f, 0.99f, 0.99f } } };
|
|
|
|
ALIGNAS(16) XMVECTOR temp[16];
|
|
const uint8_t *pPixels = cImage.pixels;
|
|
for (size_t h = 0; h < cImage.height; h += 4)
|
|
{
|
|
const uint8_t *ptr = pPixels;
|
|
size_t ph = std::min<size_t>(4, cImage.height - h);
|
|
size_t w = 0;
|
|
for (size_t count = 0; (count < cImage.rowPitch) && (w < cImage.width); count += sbpp, w += 4)
|
|
{
|
|
pfDecode(temp, ptr);
|
|
|
|
size_t pw = std::min<size_t>(4, cImage.width - w);
|
|
assert(pw > 0 && ph > 0);
|
|
|
|
if (pw == 4 && ph == 4)
|
|
{
|
|
// Full blocks
|
|
for (size_t j = 0; j < 16; ++j)
|
|
{
|
|
XMVECTOR alpha = XMVectorSplatW(temp[j]);
|
|
if (XMVector4Less(alpha, threshold))
|
|
return false;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// Handle partial blocks
|
|
for (size_t y = 0; y < ph; ++y)
|
|
{
|
|
for (size_t x = 0; x < pw; ++x)
|
|
{
|
|
XMVECTOR alpha = XMVectorSplatW(temp[y * 4 + x]);
|
|
if (XMVector4Less(alpha, threshold))
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
ptr += sbpp;
|
|
}
|
|
|
|
pPixels += cImage.rowPitch;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
};
|
|
|
|
|
|
//=====================================================================================
|
|
// Entry-points
|
|
//=====================================================================================
|
|
|
|
//-------------------------------------------------------------------------------------
|
|
// Compression
|
|
//-------------------------------------------------------------------------------------
|
|
_Use_decl_annotations_
|
|
HRESULT DirectX::Compress(
|
|
const Image& srcImage,
|
|
DXGI_FORMAT format,
|
|
TEX_COMPRESS_FLAGS compress,
|
|
float threshold,
|
|
ScratchImage& image) noexcept
|
|
{
|
|
if (IsCompressed(srcImage.format) || !IsCompressed(format))
|
|
return E_INVALIDARG;
|
|
|
|
if (IsTypeless(format)
|
|
|| IsTypeless(srcImage.format) || IsPlanar(srcImage.format) || IsPalettized(srcImage.format))
|
|
return HRESULT_FROM_WIN32(ERROR_NOT_SUPPORTED);
|
|
|
|
// Create compressed image
|
|
HRESULT hr = image.Initialize2D(format, srcImage.width, srcImage.height, 1, 1);
|
|
if (FAILED(hr))
|
|
return hr;
|
|
|
|
const Image *img = image.GetImage(0, 0, 0);
|
|
if (!img)
|
|
{
|
|
image.Release();
|
|
return E_POINTER;
|
|
}
|
|
|
|
// Compress single image
|
|
if (compress & TEX_COMPRESS_PARALLEL)
|
|
{
|
|
#ifndef _OPENMP
|
|
return E_NOTIMPL;
|
|
#else
|
|
hr = CompressBC_Parallel(srcImage, *img, GetBCFlags(compress), GetSRGBFlags(compress), threshold);
|
|
#endif // _OPENMP
|
|
}
|
|
else
|
|
{
|
|
hr = CompressBC(srcImage, *img, GetBCFlags(compress), GetSRGBFlags(compress), threshold);
|
|
}
|
|
|
|
if (FAILED(hr))
|
|
image.Release();
|
|
|
|
return hr;
|
|
}
|
|
|
|
_Use_decl_annotations_
|
|
HRESULT DirectX::Compress(
|
|
const Image* srcImages,
|
|
size_t nimages,
|
|
const TexMetadata& metadata,
|
|
DXGI_FORMAT format,
|
|
TEX_COMPRESS_FLAGS compress,
|
|
float threshold,
|
|
ScratchImage& cImages) noexcept
|
|
{
|
|
if (!srcImages || !nimages)
|
|
return E_INVALIDARG;
|
|
|
|
if (IsCompressed(metadata.format) || !IsCompressed(format))
|
|
return E_INVALIDARG;
|
|
|
|
if (IsTypeless(format)
|
|
|| IsTypeless(metadata.format) || IsPlanar(metadata.format) || IsPalettized(metadata.format))
|
|
return HRESULT_FROM_WIN32(ERROR_NOT_SUPPORTED);
|
|
|
|
cImages.Release();
|
|
|
|
TexMetadata mdata2 = metadata;
|
|
mdata2.format = format;
|
|
HRESULT hr = cImages.Initialize(mdata2);
|
|
if (FAILED(hr))
|
|
return hr;
|
|
|
|
if (nimages != cImages.GetImageCount())
|
|
{
|
|
cImages.Release();
|
|
return E_FAIL;
|
|
}
|
|
|
|
const Image* dest = cImages.GetImages();
|
|
if (!dest)
|
|
{
|
|
cImages.Release();
|
|
return E_POINTER;
|
|
}
|
|
|
|
for (size_t index = 0; index < nimages; ++index)
|
|
{
|
|
assert(dest[index].format == format);
|
|
|
|
const Image& src = srcImages[index];
|
|
|
|
if (src.width != dest[index].width || src.height != dest[index].height)
|
|
{
|
|
cImages.Release();
|
|
return E_FAIL;
|
|
}
|
|
|
|
if ((compress & TEX_COMPRESS_PARALLEL))
|
|
{
|
|
#ifndef _OPENMP
|
|
return E_NOTIMPL;
|
|
#else
|
|
if (compress & TEX_COMPRESS_PARALLEL)
|
|
{
|
|
hr = CompressBC_Parallel(src, dest[index], GetBCFlags(compress), GetSRGBFlags(compress), threshold);
|
|
if (FAILED(hr))
|
|
{
|
|
cImages.Release();
|
|
return hr;
|
|
}
|
|
}
|
|
#endif // _OPENMP
|
|
}
|
|
else
|
|
{
|
|
hr = CompressBC(src, dest[index], GetBCFlags(compress), GetSRGBFlags(compress), threshold);
|
|
if (FAILED(hr))
|
|
{
|
|
cImages.Release();
|
|
return hr;
|
|
}
|
|
}
|
|
}
|
|
|
|
return S_OK;
|
|
}
|
|
|
|
|
|
//-------------------------------------------------------------------------------------
|
|
// Decompression
|
|
//-------------------------------------------------------------------------------------
|
|
_Use_decl_annotations_
|
|
HRESULT DirectX::Decompress(
|
|
const Image& cImage,
|
|
DXGI_FORMAT format,
|
|
ScratchImage& image) noexcept
|
|
{
|
|
if (!IsCompressed(cImage.format) || IsCompressed(format))
|
|
return E_INVALIDARG;
|
|
|
|
if (format == DXGI_FORMAT_UNKNOWN)
|
|
{
|
|
// Pick a default decompressed format based on BC input format
|
|
format = DefaultDecompress(cImage.format);
|
|
if (format == DXGI_FORMAT_UNKNOWN)
|
|
{
|
|
// Input is not a compressed format
|
|
return E_INVALIDARG;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (!IsValid(format))
|
|
return E_INVALIDARG;
|
|
|
|
if (IsTypeless(format) || IsPlanar(format) || IsPalettized(format))
|
|
return HRESULT_FROM_WIN32(ERROR_NOT_SUPPORTED);
|
|
}
|
|
|
|
// Create decompressed image
|
|
HRESULT hr = image.Initialize2D(format, cImage.width, cImage.height, 1, 1);
|
|
if (FAILED(hr))
|
|
return hr;
|
|
|
|
const Image *img = image.GetImage(0, 0, 0);
|
|
if (!img)
|
|
{
|
|
image.Release();
|
|
return E_POINTER;
|
|
}
|
|
|
|
// Decompress single image
|
|
hr = DecompressBC(cImage, *img);
|
|
if (FAILED(hr))
|
|
image.Release();
|
|
|
|
return hr;
|
|
}
|
|
|
|
_Use_decl_annotations_
|
|
HRESULT DirectX::Decompress(
|
|
const Image* cImages,
|
|
size_t nimages,
|
|
const TexMetadata& metadata,
|
|
DXGI_FORMAT format,
|
|
ScratchImage& images) noexcept
|
|
{
|
|
if (!cImages || !nimages)
|
|
return E_INVALIDARG;
|
|
|
|
if (!IsCompressed(metadata.format) || IsCompressed(format))
|
|
return E_INVALIDARG;
|
|
|
|
if (format == DXGI_FORMAT_UNKNOWN)
|
|
{
|
|
// Pick a default decompressed format based on BC input format
|
|
format = DefaultDecompress(cImages[0].format);
|
|
if (format == DXGI_FORMAT_UNKNOWN)
|
|
{
|
|
// Input is not a compressed format
|
|
return E_FAIL;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (!IsValid(format))
|
|
return E_INVALIDARG;
|
|
|
|
if (IsTypeless(format) || IsPlanar(format) || IsPalettized(format))
|
|
return HRESULT_FROM_WIN32(ERROR_NOT_SUPPORTED);
|
|
}
|
|
|
|
images.Release();
|
|
|
|
TexMetadata mdata2 = metadata;
|
|
mdata2.format = format;
|
|
HRESULT hr = images.Initialize(mdata2);
|
|
if (FAILED(hr))
|
|
return hr;
|
|
|
|
if (nimages != images.GetImageCount())
|
|
{
|
|
images.Release();
|
|
return E_FAIL;
|
|
}
|
|
|
|
const Image* dest = images.GetImages();
|
|
if (!dest)
|
|
{
|
|
images.Release();
|
|
return E_POINTER;
|
|
}
|
|
|
|
for (size_t index = 0; index < nimages; ++index)
|
|
{
|
|
assert(dest[index].format == format);
|
|
|
|
const Image& src = cImages[index];
|
|
if (!IsCompressed(src.format))
|
|
{
|
|
images.Release();
|
|
return E_FAIL;
|
|
}
|
|
|
|
if (src.width != dest[index].width || src.height != dest[index].height)
|
|
{
|
|
images.Release();
|
|
return E_FAIL;
|
|
}
|
|
|
|
hr = DecompressBC(src, dest[index]);
|
|
if (FAILED(hr))
|
|
{
|
|
images.Release();
|
|
return hr;
|
|
}
|
|
}
|
|
|
|
return S_OK;
|
|
}
|