234 lines
6.7 KiB
C++
234 lines
6.7 KiB
C++
//-------------------------------------------------------------------------------------
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// DirectXTex.inl
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//
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// DirectX Texture Library
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//
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// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
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// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
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// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
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// PARTICULAR PURPOSE.
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//
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//
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// http://go.microsoft.com/fwlink/?LinkId=248926
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//-------------------------------------------------------------------------------------
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#if defined(_MSC_VER) && (_MSC_VER > 1000)
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#pragma once
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#endif
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//=====================================================================================
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// DXGI Format Utilities
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//=====================================================================================
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_Use_decl_annotations_
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inline bool IsValid( DXGI_FORMAT fmt )
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{
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#ifdef DXGI_1_2_FORMATS
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return ( static_cast<size_t>(fmt) >= 1 && static_cast<size_t>(fmt) <= 115 );
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#else
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return ( static_cast<size_t>(fmt) >= 1 && static_cast<size_t>(fmt) <= 99 );
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#endif
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}
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_Use_decl_annotations_
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inline bool IsCompressed( DXGI_FORMAT fmt )
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{
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switch ( fmt )
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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_BC1_UNORM_SRGB:
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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_BC2_UNORM_SRGB:
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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_BC3_UNORM_SRGB:
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case DXGI_FORMAT_BC4_TYPELESS:
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case DXGI_FORMAT_BC4_UNORM:
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case DXGI_FORMAT_BC4_SNORM:
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case DXGI_FORMAT_BC5_TYPELESS:
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case DXGI_FORMAT_BC5_UNORM:
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case DXGI_FORMAT_BC5_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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case DXGI_FORMAT_BC7_TYPELESS:
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case DXGI_FORMAT_BC7_UNORM:
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case DXGI_FORMAT_BC7_UNORM_SRGB:
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return true;
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default:
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return false;
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}
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}
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_Use_decl_annotations_
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inline bool IsPacked( DXGI_FORMAT fmt )
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{
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return ( (fmt == DXGI_FORMAT_R8G8_B8G8_UNORM) || (fmt == DXGI_FORMAT_G8R8_G8B8_UNORM) );
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}
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_Use_decl_annotations_
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inline bool IsVideo( DXGI_FORMAT fmt )
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{
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#ifdef DXGI_1_2_FORMATS
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switch ( fmt )
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{
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case DXGI_FORMAT_AYUV:
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case DXGI_FORMAT_Y410:
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case DXGI_FORMAT_Y416:
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case DXGI_FORMAT_NV12:
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case DXGI_FORMAT_P010:
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case DXGI_FORMAT_P016:
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case DXGI_FORMAT_YUY2:
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case DXGI_FORMAT_Y210:
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case DXGI_FORMAT_Y216:
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case DXGI_FORMAT_NV11:
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// These video formats can be used with the 3D pipeline through special view mappings
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return true;
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case DXGI_FORMAT_420_OPAQUE:
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case DXGI_FORMAT_AI44:
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case DXGI_FORMAT_IA44:
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case DXGI_FORMAT_P8:
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case DXGI_FORMAT_A8P8:
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// These are limited use video formats not usable in any way by the 3D pipeline
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return true;
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default:
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return false;
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}
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#else // !DXGI_1_2_FORMATS
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UNREFERENCED_PARAMETER(fmt);
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return false;
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#endif
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}
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_Use_decl_annotations_
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inline bool IsSRGB( DXGI_FORMAT fmt )
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{
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switch( fmt )
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{
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case DXGI_FORMAT_R8G8B8A8_UNORM_SRGB:
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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_B8G8R8A8_UNORM_SRGB:
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case DXGI_FORMAT_B8G8R8X8_UNORM_SRGB:
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case DXGI_FORMAT_BC7_UNORM_SRGB:
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return true;
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default:
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return false;
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}
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}
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_Use_decl_annotations_
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inline bool IsTypeless( DXGI_FORMAT fmt )
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{
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switch( fmt )
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{
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case DXGI_FORMAT_R32G32B32A32_TYPELESS:
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case DXGI_FORMAT_R32G32B32_TYPELESS:
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case DXGI_FORMAT_R16G16B16A16_TYPELESS:
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case DXGI_FORMAT_R32G32_TYPELESS:
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case DXGI_FORMAT_R32G8X24_TYPELESS:
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case DXGI_FORMAT_R32_FLOAT_X8X24_TYPELESS:
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case DXGI_FORMAT_X32_TYPELESS_G8X24_UINT:
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case DXGI_FORMAT_R10G10B10A2_TYPELESS:
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case DXGI_FORMAT_R8G8B8A8_TYPELESS:
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case DXGI_FORMAT_R16G16_TYPELESS:
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case DXGI_FORMAT_R32_TYPELESS:
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case DXGI_FORMAT_R24G8_TYPELESS:
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case DXGI_FORMAT_R24_UNORM_X8_TYPELESS:
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case DXGI_FORMAT_X24_TYPELESS_G8_UINT:
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case DXGI_FORMAT_R8G8_TYPELESS:
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case DXGI_FORMAT_R16_TYPELESS:
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case DXGI_FORMAT_R8_TYPELESS:
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case DXGI_FORMAT_BC1_TYPELESS:
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case DXGI_FORMAT_BC2_TYPELESS:
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case DXGI_FORMAT_BC3_TYPELESS:
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case DXGI_FORMAT_BC4_TYPELESS:
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case DXGI_FORMAT_BC5_TYPELESS:
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case DXGI_FORMAT_B8G8R8A8_TYPELESS:
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case DXGI_FORMAT_B8G8R8X8_TYPELESS:
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case DXGI_FORMAT_BC6H_TYPELESS:
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case DXGI_FORMAT_BC7_TYPELESS:
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return true;
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default:
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return false;
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}
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}
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_Use_decl_annotations_
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inline size_t ComputeScanlines( DXGI_FORMAT fmt, size_t height )
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{
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switch ( fmt )
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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_BC1_UNORM_SRGB:
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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_BC2_UNORM_SRGB:
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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_BC3_UNORM_SRGB:
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case DXGI_FORMAT_BC4_TYPELESS:
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case DXGI_FORMAT_BC4_UNORM:
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case DXGI_FORMAT_BC4_SNORM:
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case DXGI_FORMAT_BC5_TYPELESS:
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case DXGI_FORMAT_BC5_UNORM:
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case DXGI_FORMAT_BC5_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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case DXGI_FORMAT_BC7_TYPELESS:
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case DXGI_FORMAT_BC7_UNORM:
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case DXGI_FORMAT_BC7_UNORM_SRGB:
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return std::max<size_t>( 1, (height + 3) / 4 );
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default:
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return height;
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}
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}
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//=====================================================================================
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// Image I/O
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//=====================================================================================
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_Use_decl_annotations_
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inline HRESULT SaveToDDSMemory( const Image& image, DWORD flags, Blob& blob )
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{
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TexMetadata mdata;
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memset( &mdata, 0, sizeof(mdata) );
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mdata.width = image.width;
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mdata.height = image.height;
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mdata.depth = 1;
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mdata.arraySize = 1;
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mdata.mipLevels = 1;
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mdata.format = image.format;
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mdata.dimension = TEX_DIMENSION_TEXTURE2D;
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return SaveToDDSMemory( &image, 1, mdata, flags, blob );
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}
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_Use_decl_annotations_
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inline HRESULT SaveToDDSFile( const Image& image, DWORD flags, LPCWSTR szFile )
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{
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TexMetadata mdata;
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memset( &mdata, 0, sizeof(mdata) );
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mdata.width = image.width;
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mdata.height = image.height;
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mdata.depth = 1;
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mdata.arraySize = 1;
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mdata.mipLevels = 1;
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mdata.format = image.format;
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mdata.dimension = TEX_DIMENSION_TEXTURE2D;
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return SaveToDDSFile( &image, 1, mdata, flags, szFile );
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}
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