438 lines
14 KiB
C++
438 lines
14 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/os/file_access.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_INDEXED = 0x00000020,
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DDPF_RGB = 0x00000040,
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};
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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_A2XY,
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DDS_BGRA8,
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DDS_BGR8,
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DDS_RGBA8, //flipped in dds
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DDS_RGB8, //flipped in dds
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DDS_BGR5A1,
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DDS_BGR565,
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DDS_BGR10A2,
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DDS_INDEXED,
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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;
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bool compressed;
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bool palette;
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uint32_t divisor;
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uint32_t block_size;
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Image::Format format;
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};
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static const DDSFormatInfo dds_format_info[DDS_MAX] = {
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{ "DXT1/BC1", true, false, 4, 8, Image::FORMAT_DXT1 },
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{ "DXT3/BC2", true, false, 4, 16, Image::FORMAT_DXT3 },
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{ "DXT5/BC3", true, false, 4, 16, Image::FORMAT_DXT5 },
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{ "ATI1/BC4", true, false, 4, 8, Image::FORMAT_RGTC_R },
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{ "ATI2/3DC/BC5", true, false, 4, 16, Image::FORMAT_RGTC_RG },
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{ "A2XY/DXN/BC5", true, false, 4, 16, Image::FORMAT_RGTC_RG },
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{ "BGRA8", false, false, 1, 4, Image::FORMAT_RGBA8 },
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{ "BGR8", false, false, 1, 3, Image::FORMAT_RGB8 },
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{ "RGBA8", false, false, 1, 4, Image::FORMAT_RGBA8 },
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{ "RGB8", false, false, 1, 3, Image::FORMAT_RGB8 },
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{ "BGR5A1", false, false, 1, 2, Image::FORMAT_RGBA8 },
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{ "BGR565", false, false, 1, 2, Image::FORMAT_RGB8 },
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{ "BGR10A2", false, false, 1, 4, Image::FORMAT_RGBA8 },
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{ "GRAYSCALE", false, false, 1, 1, Image::FORMAT_L8 },
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{ "GRAYSCALE_ALPHA", false, false, 1, 2, Image::FORMAT_LA8 }
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};
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RES ResourceFormatDDS::load(const String &p_path, const String &p_original_path, Error *r_error, bool p_no_subresource_cache) {
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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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FileAccess *f = FileAccess::open(p_path, FileAccess::READ, &err);
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if (!f) {
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return RES();
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}
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FileAccessRef 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, RES(), "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 11
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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(RES(), "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_ddsx = */ f->get_32();
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//reserved skip
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f->get_32();
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f->get_32();
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/*
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print_line("DDS width: "+itos(width));
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print_line("DDS height: "+itos(height));
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print_line("DDS mipmaps: "+itos(mipmaps));
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printf("fourcc: %x fflags: %x, rgbbits: %x, fsize: %x\n",format_fourcc,format_flags,format_rgb_bits,format_size);
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printf("rmask: %x gmask: %x, bmask: %x, amask: %x\n",format_red_mask,format_green_mask,format_blue_mask,format_alpha_mask);
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*/
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//must avoid this later
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while (f->get_position() < 128) {
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f->get_8();
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}
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DDSFormat dds_format;
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if (format_flags & DDPF_FOURCC && format_fourcc == PF_FOURCC("DXT1")) {
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dds_format = DDS_DXT1;
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} else if (format_flags & DDPF_FOURCC && format_fourcc == PF_FOURCC("DXT3")) {
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dds_format = DDS_DXT3;
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} else if (format_flags & DDPF_FOURCC && format_fourcc == PF_FOURCC("DXT5")) {
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dds_format = DDS_DXT5;
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} else if (format_flags & DDPF_FOURCC && format_fourcc == PF_FOURCC("ATI1")) {
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dds_format = DDS_ATI1;
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} else if (format_flags & DDPF_FOURCC && format_fourcc == PF_FOURCC("ATI2")) {
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dds_format = DDS_ATI2;
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} else if (format_flags & DDPF_FOURCC && format_fourcc == PF_FOURCC("A2XY")) {
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dds_format = DDS_A2XY;
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} else if (format_flags & DDPF_RGB && format_flags & DDPF_ALPHAPIXELS && 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_flags & DDPF_RGB && !(format_flags & DDPF_ALPHAPIXELS) && 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_flags & DDPF_RGB && format_flags & DDPF_ALPHAPIXELS && 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_flags & DDPF_RGB && !(format_flags & DDPF_ALPHAPIXELS) && 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_flags & DDPF_RGB && format_flags & DDPF_ALPHAPIXELS && 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_flags & DDPF_RGB && format_flags & DDPF_ALPHAPIXELS && 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_flags & DDPF_RGB && !(format_flags & DDPF_ALPHAPIXELS) && 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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} else if (!(format_flags & DDPF_ALPHAPIXELS) && format_rgb_bits == 8 && format_red_mask == 0xff && format_green_mask == 0xff && format_blue_mask == 0xff) {
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dds_format = DDS_LUMINANCE;
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} else if ((format_flags & DDPF_ALPHAPIXELS) && format_rgb_bits == 16 && format_red_mask == 0xff && format_green_mask == 0xff && format_blue_mask == 0xff && format_alpha_mask == 0xff00) {
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dds_format = DDS_LUMINANCE_ALPHA;
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} else if (format_flags & DDPF_INDEXED && format_rgb_bits == 8) {
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dds_format = DDS_BGR565;
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} else {
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printf("unrecognized fourcc %x format_flags: %x - rgbbits %i - red_mask %x green mask %x blue mask %x alpha mask %x\n", format_fourcc, format_flags, format_rgb_bits, format_red_mask, format_green_mask, format_blue_mask, format_alpha_mask);
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ERR_FAIL_V_MSG(RES(), "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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PoolVector<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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//compressed bc
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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, RES());
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ERR_FAIL_COND_V(!(flags & DDSD_LINEARSIZE), RES());
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for (uint32_t i = 1; i < mipmaps; i++) {
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w = MAX(1, w >> 1);
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h = MAX(1, 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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//printf("%i x %i - block: %i\n",w,h,bsize);
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size += bsize;
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}
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src_data.resize(size);
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PoolVector<uint8_t>::Write wb = src_data.write();
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f->get_buffer(wb.ptr(), size);
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} else if (info.palette) {
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//indexed
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ERR_FAIL_COND_V(!(flags & DDSD_PITCH), RES());
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ERR_FAIL_COND_V(format_rgb_bits != 8, RES());
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uint32_t size = pitch * height;
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ERR_FAIL_COND_V(size != width * height * info.block_size, RES());
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uint8_t palette[256 * 4];
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f->get_buffer(palette, 256 * 4);
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int colsize = 3;
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for (int i = 0; i < 256; i++) {
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if (palette[i * 4 + 3] < 255) {
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colsize = 4;
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}
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}
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int w2 = width;
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int h2 = height;
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for (uint32_t i = 1; i < mipmaps; i++) {
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w2 = (w2 + 1) >> 1;
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h2 = (h2 + 1) >> 1;
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size += w2 * h2 * info.block_size;
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}
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src_data.resize(size + 256 * colsize);
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PoolVector<uint8_t>::Write wb = src_data.write();
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f->get_buffer(wb.ptr(), size);
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for (int i = 0; i < 256; i++) {
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int dst_ofs = size + i * colsize;
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int src_ofs = i * 4;
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wb[dst_ofs + 0] = palette[src_ofs + 2];
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wb[dst_ofs + 1] = palette[src_ofs + 1];
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wb[dst_ofs + 2] = palette[src_ofs + 0];
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if (colsize == 4) {
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wb[dst_ofs + 3] = palette[src_ofs + 3];
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}
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}
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} else {
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//uncompressed generic...
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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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if (dds_format == DDS_BGR565) {
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size = size * 3 / 2;
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} else if (dds_format == DDS_BGR5A1) {
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size = size * 2;
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}
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src_data.resize(size);
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PoolVector<uint8_t>::Write wb = src_data.write();
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f->get_buffer(wb.ptr(), size);
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switch (dds_format) {
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case DDS_BGR5A1: {
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// TO RGBA
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int colcount = size / 4;
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for (int i = colcount - 1; i >= 0; i--) {
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int src_ofs = i * 2;
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int dst_ofs = i * 4;
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uint8_t a = wb[src_ofs + 1] & 0x80;
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uint8_t b = wb[src_ofs] & 0x1F;
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uint8_t g = (wb[src_ofs] >> 5) | ((wb[src_ofs + 1] & 0x3) << 3);
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uint8_t r = (wb[src_ofs + 1] >> 2) & 0x1F;
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wb[dst_ofs + 0] = r << 3;
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wb[dst_ofs + 1] = g << 3;
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wb[dst_ofs + 2] = b << 3;
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wb[dst_ofs + 3] = a ? 255 : 0;
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}
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} break;
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case DDS_BGR565: {
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int colcount = size / 3;
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for (int i = colcount - 1; i >= 0; i--) {
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int src_ofs = i * 2;
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int dst_ofs = i * 3;
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uint8_t b = wb[src_ofs] & 0x1F;
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uint8_t g = (wb[src_ofs] >> 5) | ((wb[src_ofs + 1] & 0x7) << 3);
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uint8_t r = wb[src_ofs + 1] >> 3;
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wb[dst_ofs + 0] = r << 3;
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wb[dst_ofs + 1] = g << 2;
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wb[dst_ofs + 2] = b << 3; //b<<3;
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}
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} break;
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case DDS_BGR10A2: {
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// TO RGBA
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int colcount = size / 4;
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for (int i = colcount - 1; i >= 0; i--) {
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int ofs = i * 4;
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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);
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uint8_t a = (w32 & 0xc0000000) >> 24;
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uint8_t r = (w32 & 0x3ff00000) >> 22;
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uint8_t g = (w32 & 0xffc00) >> 12;
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uint8_t b = (w32 & 0x3ff) >> 2;
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wb[ofs + 0] = r;
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wb[ofs + 1] = g;
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wb[ofs + 2] = b;
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wb[ofs + 3] = a == 0xc0 ? 255 : a; //0xc0 should be opaque
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}
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} break;
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case DDS_BGRA8: {
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int colcount = size / 4;
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for (int i = 0; i < colcount; i++) {
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SWAP(wb[i * 4 + 0], wb[i * 4 + 2]);
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}
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} break;
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case DDS_BGR8: {
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int colcount = size / 3;
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for (int i = 0; i < colcount; i++) {
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SWAP(wb[i * 3 + 0], wb[i * 3 + 2]);
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}
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} break;
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case DDS_RGBA8: {
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/* do nothing either
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int colcount = size/4;
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for(int i=0;i<colcount;i++) {
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uint8_t r = wb[i*4+1];
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uint8_t g = wb[i*4+2];
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uint8_t b = wb[i*4+3];
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uint8_t a = wb[i*4+0];
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wb[i*4+0]=r;
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wb[i*4+1]=g;
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wb[i*4+2]=b;
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wb[i*4+3]=a;
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}
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*/
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} break;
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case DDS_RGB8: {
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// do nothing
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/*
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int colcount = size/3;
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for(int i=0;i<colcount;i++) {
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SWAP( wb[i*3+0],wb[i*3+2] );
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}*/
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} break;
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case DDS_LUMINANCE: {
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// do nothing i guess?
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} break;
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case DDS_LUMINANCE_ALPHA: {
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// do nothing i guess?
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} break;
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default: {
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}
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}
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}
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Ref<Image> img = memnew(Image(width, height, mipmaps - 1, info.format, src_data));
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Ref<ImageTexture> texture = memnew(ImageTexture);
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texture->create_from_image(img);
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if (r_error) {
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*r_error = OK;
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}
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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, "Texture");
|
|
}
|
|
|
|
String ResourceFormatDDS::get_resource_type(const String &p_path) const {
|
|
if (p_path.get_extension().to_lower() == "dds") {
|
|
return "ImageTexture";
|
|
}
|
|
return "";
|
|
}
|