596 lines
17 KiB
C++
596 lines
17 KiB
C++
/**************************************************************************/
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/* texture_loader_dds.cpp */
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/**************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/**************************************************************************/
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/**************************************************************************/
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#include "texture_loader_dds.h"
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#include "core/io/file_access.h"
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#include "scene/resources/image_texture.h"
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#define PF_FOURCC(s) ((uint32_t)(((s)[3] << 24U) | ((s)[2] << 16U) | ((s)[1] << 8U) | ((s)[0])))
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// Reference: https://docs.microsoft.com/en-us/windows/win32/direct3ddds/dds-header
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enum {
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DDS_MAGIC = 0x20534444,
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DDSD_PITCH = 0x00000008,
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DDSD_LINEARSIZE = 0x00080000,
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DDSD_MIPMAPCOUNT = 0x00020000,
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DDPF_FOURCC = 0x00000004,
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DDPF_ALPHAPIXELS = 0x00000001,
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DDPF_RGB = 0x00000040
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};
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enum DDSFourCC {
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DDFCC_DXT1 = PF_FOURCC("DXT1"),
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DDFCC_DXT3 = PF_FOURCC("DXT3"),
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DDFCC_DXT5 = PF_FOURCC("DXT5"),
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DDFCC_ATI1 = PF_FOURCC("ATI1"),
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DDFCC_BC4U = PF_FOURCC("BC4U"),
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DDFCC_ATI2 = PF_FOURCC("ATI2"),
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DDFCC_BC5U = PF_FOURCC("BC5U"),
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DDFCC_A2XY = PF_FOURCC("A2XY"),
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DDFCC_DX10 = PF_FOURCC("DX10"),
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DDFCC_R16F = 111,
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DDFCC_RG16F = 112,
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DDFCC_RGBA16F = 113,
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DDFCC_R32F = 114,
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DDFCC_RG32F = 115,
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DDFCC_RGBA32F = 116
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};
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// Reference: https://learn.microsoft.com/en-us/windows/win32/api/dxgiformat/ne-dxgiformat-dxgi_format
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enum DXGIFormat {
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DXGI_R32G32B32A32_FLOAT = 2,
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DXGI_R16G16B16A16_FLOAT = 10,
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DXGI_R32G32_FLOAT = 16,
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DXGI_R10G10B10A2_UNORM = 24,
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DXGI_R8G8B8A8_UNORM = 28,
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DXGI_R16G16_FLOAT = 34,
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DXGI_R32_FLOAT = 41,
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DXGI_R16_FLOAT = 54,
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DXGI_R9G9B9E5 = 67,
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DXGI_BC1_UNORM = 71,
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DXGI_BC2_UNORM = 74,
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DXGI_BC3_UNORM = 77,
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DXGI_BC4_UNORM = 80,
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DXGI_BC5_UNORM = 83,
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DXGI_B5G6R5_UNORM = 85,
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DXGI_B5G5R5A1_UNORM = 86,
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DXGI_B8G8R8A8_UNORM = 87,
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DXGI_BC6H_UF16 = 95,
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DXGI_BC6H_SF16 = 96,
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DXGI_BC7_UNORM = 98,
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DXGI_B4G4R4A4_UNORM = 115
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};
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// The legacy bitmasked format names here represent the actual data layout in the files,
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// while their official names are flipped (e.g. RGBA8 layout is officially called ABGR8).
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enum DDSFormat {
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DDS_DXT1,
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DDS_DXT3,
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DDS_DXT5,
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DDS_ATI1,
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DDS_ATI2,
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DDS_BC6U,
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DDS_BC6S,
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DDS_BC7U,
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DDS_R16F,
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DDS_RG16F,
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DDS_RGBA16F,
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DDS_R32F,
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DDS_RG32F,
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DDS_RGBA32F,
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DDS_RGB9E5,
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DDS_BGRA8,
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DDS_BGR8,
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DDS_RGBA8,
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DDS_RGB8,
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DDS_BGR5A1,
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DDS_BGR565,
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DDS_BGR10A2,
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DDS_RGB10A2,
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DDS_BGRA4,
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DDS_LUMINANCE,
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DDS_LUMINANCE_ALPHA,
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DDS_MAX
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};
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struct DDSFormatInfo {
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const char *name = nullptr;
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bool compressed = false;
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uint32_t divisor = 0;
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uint32_t block_size = 0;
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Image::Format format = Image::Format::FORMAT_BPTC_RGBA;
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};
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static const DDSFormatInfo dds_format_info[DDS_MAX] = {
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{ "DXT1/BC1", true, 4, 8, Image::FORMAT_DXT1 },
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{ "DXT3/BC2", true, 4, 16, Image::FORMAT_DXT3 },
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{ "DXT5/BC3", true, 4, 16, Image::FORMAT_DXT5 },
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{ "ATI1/BC4", true, 4, 8, Image::FORMAT_RGTC_R },
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{ "ATI2/A2XY/BC5", true, 4, 16, Image::FORMAT_RGTC_RG },
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{ "BC6U", true, 4, 16, Image::FORMAT_BPTC_RGBFU },
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{ "BC6S", true, 4, 16, Image::FORMAT_BPTC_RGBF },
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{ "BC7U", true, 4, 16, Image::FORMAT_BPTC_RGBA },
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{ "R16F", false, 1, 2, Image::FORMAT_RH },
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{ "RG16F", false, 1, 4, Image::FORMAT_RGH },
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{ "RGBA16F", false, 1, 8, Image::FORMAT_RGBAH },
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{ "R32F", false, 1, 4, Image::FORMAT_RF },
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{ "RG32F", false, 1, 8, Image::FORMAT_RGF },
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{ "RGBA32F", false, 1, 16, Image::FORMAT_RGBAF },
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{ "RGB9E5", false, 1, 4, Image::FORMAT_RGBE9995 },
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{ "BGRA8", false, 1, 4, Image::FORMAT_RGBA8 },
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{ "BGR8", false, 1, 3, Image::FORMAT_RGB8 },
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{ "RGBA8", false, 1, 4, Image::FORMAT_RGBA8 },
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{ "RGB8", false, 1, 3, Image::FORMAT_RGB8 },
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{ "BGR5A1", false, 1, 2, Image::FORMAT_RGBA8 },
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{ "BGR565", false, 1, 2, Image::FORMAT_RGB8 },
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{ "BGR10A2", false, 1, 4, Image::FORMAT_RGBA8 },
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{ "RGB10A2", false, 1, 4, Image::FORMAT_RGBA8 },
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{ "BGRA4", false, 1, 2, Image::FORMAT_RGBA8 },
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{ "GRAYSCALE", false, 1, 1, Image::FORMAT_L8 },
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{ "GRAYSCALE_ALPHA", false, 1, 2, Image::FORMAT_LA8 }
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};
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static DDSFormat dxgi_to_dds_format(uint32_t p_dxgi_format) {
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switch (p_dxgi_format) {
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case DXGI_R32G32B32A32_FLOAT: {
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return DDS_RGBA32F;
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}
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case DXGI_R16G16B16A16_FLOAT: {
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return DDS_RGBA16F;
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}
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case DXGI_R32G32_FLOAT: {
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return DDS_RG32F;
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}
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case DXGI_R10G10B10A2_UNORM: {
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return DDS_RGB10A2;
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}
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case DXGI_R8G8B8A8_UNORM: {
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return DDS_RGBA8;
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}
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case DXGI_R16G16_FLOAT: {
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return DDS_RG16F;
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}
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case DXGI_R32_FLOAT: {
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return DDS_R32F;
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}
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case DXGI_R16_FLOAT: {
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return DDS_R16F;
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}
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case DXGI_R9G9B9E5: {
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return DDS_RGB9E5;
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}
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case DXGI_BC1_UNORM: {
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return DDS_DXT1;
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}
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case DXGI_BC2_UNORM: {
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return DDS_DXT3;
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}
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case DXGI_BC3_UNORM: {
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return DDS_DXT5;
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}
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case DXGI_BC4_UNORM: {
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return DDS_ATI1;
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}
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case DXGI_BC5_UNORM: {
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return DDS_ATI2;
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}
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case DXGI_B5G6R5_UNORM: {
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return DDS_BGR565;
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}
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case DXGI_B5G5R5A1_UNORM: {
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return DDS_BGR5A1;
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}
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case DXGI_B8G8R8A8_UNORM: {
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return DDS_BGRA8;
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}
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case DXGI_BC6H_UF16: {
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return DDS_BC6U;
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}
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case DXGI_BC6H_SF16: {
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return DDS_BC6S;
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}
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case DXGI_BC7_UNORM: {
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return DDS_BC7U;
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}
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case DXGI_B4G4R4A4_UNORM: {
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return DDS_BGRA4;
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}
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default: {
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return DDS_MAX;
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}
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}
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}
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Ref<Resource> ResourceFormatDDS::load(const String &p_path, const String &p_original_path, Error *r_error, bool p_use_sub_threads, float *r_progress, CacheMode p_cache_mode) {
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if (r_error) {
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*r_error = ERR_CANT_OPEN;
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}
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Error err;
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Ref<FileAccess> f = FileAccess::open(p_path, FileAccess::READ, &err);
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if (f.is_null()) {
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return Ref<Resource>();
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}
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Ref<FileAccess> fref(f);
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if (r_error) {
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*r_error = ERR_FILE_CORRUPT;
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}
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ERR_FAIL_COND_V_MSG(err != OK, Ref<Resource>(), "Unable to open DDS texture file '" + p_path + "'.");
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uint32_t magic = f->get_32();
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uint32_t hsize = f->get_32();
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uint32_t flags = f->get_32();
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uint32_t height = f->get_32();
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uint32_t width = f->get_32();
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uint32_t pitch = f->get_32();
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/* uint32_t depth = */ f->get_32();
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uint32_t mipmaps = f->get_32();
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// Skip reserved.
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for (int i = 0; i < 11; i++) {
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f->get_32();
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}
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// Validate.
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// We don't check DDSD_CAPS or DDSD_PIXELFORMAT, as they're mandatory when writing,
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// but non-mandatory when reading (as some writers don't set them).
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if (magic != DDS_MAGIC || hsize != 124) {
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ERR_FAIL_V_MSG(Ref<Resource>(), "Invalid or unsupported DDS texture file '" + p_path + "'.");
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}
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/* uint32_t format_size = */ f->get_32();
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uint32_t format_flags = f->get_32();
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uint32_t format_fourcc = f->get_32();
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uint32_t format_rgb_bits = f->get_32();
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uint32_t format_red_mask = f->get_32();
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uint32_t format_green_mask = f->get_32();
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uint32_t format_blue_mask = f->get_32();
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uint32_t format_alpha_mask = f->get_32();
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/* uint32_t caps_1 = */ f->get_32();
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/* uint32_t caps_2 = */ f->get_32();
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/* uint32_t caps_3 = */ f->get_32();
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/* uint32_t caps_4 = */ f->get_32();
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// Skip reserved.
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f->get_32();
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if (f->get_position() < 128) {
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f->seek(128);
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}
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DDSFormat dds_format = DDS_MAX;
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if (format_flags & DDPF_FOURCC) {
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// FourCC formats.
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switch (format_fourcc) {
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case DDFCC_DXT1: {
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dds_format = DDS_DXT1;
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} break;
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case DDFCC_DXT3: {
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dds_format = DDS_DXT3;
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} break;
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case DDFCC_DXT5: {
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dds_format = DDS_DXT5;
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} break;
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case DDFCC_ATI1:
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case DDFCC_BC4U: {
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dds_format = DDS_ATI1;
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} break;
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case DDFCC_ATI2:
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case DDFCC_BC5U:
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case DDFCC_A2XY: {
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dds_format = DDS_ATI2;
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} break;
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case DDFCC_R16F: {
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dds_format = DDS_R16F;
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} break;
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case DDFCC_RG16F: {
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dds_format = DDS_RG16F;
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} break;
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case DDFCC_RGBA16F: {
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dds_format = DDS_RGBA16F;
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} break;
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case DDFCC_R32F: {
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dds_format = DDS_R32F;
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} break;
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case DDFCC_RG32F: {
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dds_format = DDS_RG32F;
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} break;
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case DDFCC_RGBA32F: {
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dds_format = DDS_RGBA32F;
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} break;
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case DDFCC_DX10: {
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uint32_t dxgi_format = f->get_32();
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/* uint32_t dimension = */ f->get_32();
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/* uint32_t misc_flags_1 = */ f->get_32();
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/* uint32_t array_size = */ f->get_32();
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/* uint32_t misc_flags_2 = */ f->get_32();
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dds_format = dxgi_to_dds_format(dxgi_format);
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} break;
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default: {
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ERR_FAIL_V_MSG(Ref<Resource>(), "Unrecognized or unsupported FourCC in DDS '" + p_path + "'.");
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}
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}
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} else if (format_flags & DDPF_RGB) {
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// Channel-bitmasked formats.
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if (format_flags & DDPF_ALPHAPIXELS) {
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// With alpha.
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if (format_rgb_bits == 32 && format_red_mask == 0xff0000 && format_green_mask == 0xff00 && format_blue_mask == 0xff && format_alpha_mask == 0xff000000) {
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dds_format = DDS_BGRA8;
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} else if (format_rgb_bits == 32 && format_red_mask == 0xff && format_green_mask == 0xff00 && format_blue_mask == 0xff0000 && format_alpha_mask == 0xff000000) {
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dds_format = DDS_RGBA8;
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} else if (format_rgb_bits == 16 && format_red_mask == 0x00007c00 && format_green_mask == 0x000003e0 && format_blue_mask == 0x0000001f && format_alpha_mask == 0x00008000) {
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dds_format = DDS_BGR5A1;
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} else if (format_rgb_bits == 32 && format_red_mask == 0x3ff00000 && format_green_mask == 0xffc00 && format_blue_mask == 0x3ff && format_alpha_mask == 0xc0000000) {
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dds_format = DDS_BGR10A2;
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} else if (format_rgb_bits == 32 && format_red_mask == 0x3ff && format_green_mask == 0xffc00 && format_blue_mask == 0x3ff00000 && format_alpha_mask == 0xc0000000) {
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dds_format = DDS_RGB10A2;
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} else if (format_rgb_bits == 16 && format_red_mask == 0xf00 && format_green_mask == 0xf0 && format_blue_mask == 0xf && format_alpha_mask == 0xf000) {
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dds_format = DDS_BGRA4;
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}
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} else {
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// Without alpha.
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if (format_rgb_bits == 24 && format_red_mask == 0xff0000 && format_green_mask == 0xff00 && format_blue_mask == 0xff) {
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dds_format = DDS_BGR8;
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} else if (format_rgb_bits == 24 && format_red_mask == 0xff && format_green_mask == 0xff00 && format_blue_mask == 0xff0000) {
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dds_format = DDS_RGB8;
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} else if (format_rgb_bits == 16 && format_red_mask == 0x0000f800 && format_green_mask == 0x000007e0 && format_blue_mask == 0x0000001f) {
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dds_format = DDS_BGR565;
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}
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}
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} else {
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// Other formats.
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if (format_flags & DDPF_ALPHAPIXELS && format_rgb_bits == 16 && format_red_mask == 0xff && format_alpha_mask == 0xff00) {
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dds_format = DDS_LUMINANCE_ALPHA;
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} else if (!(format_flags & DDPF_ALPHAPIXELS) && format_rgb_bits == 8 && format_red_mask == 0xff) {
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dds_format = DDS_LUMINANCE;
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}
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}
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// No format detected, error.
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if (dds_format == DDS_MAX) {
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ERR_FAIL_V_MSG(Ref<Resource>(), "Unrecognized or unsupported color layout in DDS '" + p_path + "'.");
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}
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if (!(flags & DDSD_MIPMAPCOUNT)) {
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mipmaps = 1;
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}
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Vector<uint8_t> src_data;
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const DDSFormatInfo &info = dds_format_info[dds_format];
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uint32_t w = width;
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uint32_t h = height;
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if (info.compressed) {
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// BC compressed.
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uint32_t size = MAX(info.divisor, w) / info.divisor * MAX(info.divisor, h) / info.divisor * info.block_size;
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ERR_FAIL_COND_V(size != pitch, Ref<Resource>());
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ERR_FAIL_COND_V(!(flags & DDSD_LINEARSIZE), Ref<Resource>());
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for (uint32_t i = 1; i < mipmaps; i++) {
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w = MAX(1u, w >> 1);
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h = MAX(1u, h >> 1);
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uint32_t bsize = MAX(info.divisor, w) / info.divisor * MAX(info.divisor, h) / info.divisor * info.block_size;
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size += bsize;
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}
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src_data.resize(size);
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uint8_t *wb = src_data.ptrw();
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f->get_buffer(wb, size);
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} else {
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// Generic uncompressed.
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uint32_t size = width * height * info.block_size;
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for (uint32_t i = 1; i < mipmaps; i++) {
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w = (w + 1) >> 1;
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h = (h + 1) >> 1;
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size += w * h * info.block_size;
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}
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// Calculate the space these formats will take up after decoding.
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if (dds_format == DDS_BGR565) {
|
|
size = size * 3 / 2;
|
|
} else if (dds_format == DDS_BGR5A1 || dds_format == DDS_BGRA4) {
|
|
size = size * 2;
|
|
}
|
|
|
|
src_data.resize(size);
|
|
uint8_t *wb = src_data.ptrw();
|
|
f->get_buffer(wb, size);
|
|
|
|
// Decode nonstandard formats.
|
|
switch (dds_format) {
|
|
case DDS_BGR5A1: {
|
|
// To RGBA8.
|
|
int colcount = size / 4;
|
|
|
|
for (int i = colcount - 1; i >= 0; i--) {
|
|
int src_ofs = i * 2;
|
|
int dst_ofs = i * 4;
|
|
|
|
uint8_t a = wb[src_ofs + 1] & 0x80;
|
|
uint8_t b = wb[src_ofs] & 0x1F;
|
|
uint8_t g = (wb[src_ofs] >> 5) | ((wb[src_ofs + 1] & 0x3) << 3);
|
|
uint8_t r = (wb[src_ofs + 1] >> 2) & 0x1F;
|
|
|
|
wb[dst_ofs + 0] = r << 3;
|
|
wb[dst_ofs + 1] = g << 3;
|
|
wb[dst_ofs + 2] = b << 3;
|
|
wb[dst_ofs + 3] = a ? 255 : 0;
|
|
}
|
|
|
|
} break;
|
|
case DDS_BGR565: {
|
|
// To RGB8.
|
|
int colcount = size / 3;
|
|
|
|
for (int i = colcount - 1; i >= 0; i--) {
|
|
int src_ofs = i * 2;
|
|
int dst_ofs = i * 3;
|
|
|
|
uint8_t b = wb[src_ofs] & 0x1F;
|
|
uint8_t g = (wb[src_ofs] >> 5) | ((wb[src_ofs + 1] & 0x7) << 3);
|
|
uint8_t r = wb[src_ofs + 1] >> 3;
|
|
|
|
wb[dst_ofs + 0] = r << 3;
|
|
wb[dst_ofs + 1] = g << 2;
|
|
wb[dst_ofs + 2] = b << 3;
|
|
}
|
|
|
|
} break;
|
|
case DDS_BGRA4: {
|
|
// To RGBA8.
|
|
int colcount = size / 4;
|
|
|
|
for (int i = colcount - 1; i >= 0; i--) {
|
|
int src_ofs = i * 2;
|
|
int dst_ofs = i * 4;
|
|
|
|
uint8_t b = wb[src_ofs] & 0x0F;
|
|
uint8_t g = wb[src_ofs] & 0xF0;
|
|
uint8_t r = wb[src_ofs + 1] & 0x0F;
|
|
uint8_t a = wb[src_ofs + 1] & 0xF0;
|
|
|
|
wb[dst_ofs] = (r << 4) | r;
|
|
wb[dst_ofs + 1] = g | (g >> 4);
|
|
wb[dst_ofs + 2] = (b << 4) | b;
|
|
wb[dst_ofs + 3] = a | (a >> 4);
|
|
}
|
|
|
|
} break;
|
|
case DDS_RGB10A2: {
|
|
// To RGBA8.
|
|
int colcount = size / 4;
|
|
|
|
for (int i = 0; i < colcount; i++) {
|
|
int ofs = i * 4;
|
|
|
|
uint32_t w32 = uint32_t(wb[ofs + 0]) | (uint32_t(wb[ofs + 1]) << 8) | (uint32_t(wb[ofs + 2]) << 16) | (uint32_t(wb[ofs + 3]) << 24);
|
|
|
|
// This method follows the 'standard' way of decoding 10-bit dds files,
|
|
// which means the ones created with DirectXTex will be loaded incorrectly.
|
|
uint8_t a = (w32 & 0xc0000000) >> 24;
|
|
uint8_t r = (w32 & 0x3ff) >> 2;
|
|
uint8_t g = (w32 & 0xffc00) >> 12;
|
|
uint8_t b = (w32 & 0x3ff00000) >> 22;
|
|
|
|
wb[ofs + 0] = r;
|
|
wb[ofs + 1] = g;
|
|
wb[ofs + 2] = b;
|
|
wb[ofs + 3] = a == 0xc0 ? 255 : a; // 0xc0 should be opaque.
|
|
}
|
|
|
|
} break;
|
|
case DDS_BGR10A2: {
|
|
// To RGBA8.
|
|
int colcount = size / 4;
|
|
|
|
for (int i = 0; i < colcount; i++) {
|
|
int ofs = i * 4;
|
|
|
|
uint32_t w32 = uint32_t(wb[ofs + 0]) | (uint32_t(wb[ofs + 1]) << 8) | (uint32_t(wb[ofs + 2]) << 16) | (uint32_t(wb[ofs + 3]) << 24);
|
|
|
|
// This method follows the 'standard' way of decoding 10-bit dds files,
|
|
// which means the ones created with DirectXTex will be loaded incorrectly.
|
|
uint8_t a = (w32 & 0xc0000000) >> 24;
|
|
uint8_t r = (w32 & 0x3ff00000) >> 22;
|
|
uint8_t g = (w32 & 0xffc00) >> 12;
|
|
uint8_t b = (w32 & 0x3ff) >> 2;
|
|
|
|
wb[ofs + 0] = r;
|
|
wb[ofs + 1] = g;
|
|
wb[ofs + 2] = b;
|
|
wb[ofs + 3] = a == 0xc0 ? 255 : a; // 0xc0 should be opaque.
|
|
}
|
|
|
|
} break;
|
|
case DDS_BGRA8: {
|
|
// To RGBA8.
|
|
int colcount = size / 4;
|
|
|
|
for (int i = 0; i < colcount; i++) {
|
|
SWAP(wb[i * 4 + 0], wb[i * 4 + 2]);
|
|
}
|
|
|
|
} break;
|
|
case DDS_BGR8: {
|
|
// To RGB8.
|
|
int colcount = size / 3;
|
|
|
|
for (int i = 0; i < colcount; i++) {
|
|
SWAP(wb[i * 3 + 0], wb[i * 3 + 2]);
|
|
}
|
|
|
|
} break;
|
|
|
|
default: {
|
|
}
|
|
}
|
|
}
|
|
|
|
Ref<Image> img = memnew(Image(width, height, mipmaps - 1, info.format, src_data));
|
|
Ref<ImageTexture> texture = ImageTexture::create_from_image(img);
|
|
|
|
if (r_error) {
|
|
*r_error = OK;
|
|
}
|
|
|
|
return texture;
|
|
}
|
|
|
|
void ResourceFormatDDS::get_recognized_extensions(List<String> *p_extensions) const {
|
|
p_extensions->push_back("dds");
|
|
}
|
|
|
|
bool ResourceFormatDDS::handles_type(const String &p_type) const {
|
|
return ClassDB::is_parent_class(p_type, "Texture2D");
|
|
}
|
|
|
|
String ResourceFormatDDS::get_resource_type(const String &p_path) const {
|
|
if (p_path.get_extension().to_lower() == "dds") {
|
|
return "ImageTexture";
|
|
}
|
|
return "";
|
|
}
|