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godot/modules/ktx/texture_loader_ktx.cpp
Thaddeus Crews 3b3e2374c9
clang-tidy: Enforce modernize-use-nullptr
2024-03-12 10:59:53 -05:00

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/**************************************************************************/
/* texture_loader_ktx.cpp */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/**************************************************************************/
#include "texture_loader_ktx.h"
#include "core/io/file_access.h"
#include "core/io/file_access_memory.h"
#include "scene/resources/image_texture.h"
#include <ktx.h>
#include <vk_format.h>
KTX_error_code ktx_read(ktxStream *stream, void *dst, const ktx_size_t count) {
Ref<FileAccess> *f = reinterpret_cast<Ref<FileAccess> *>(stream->data.custom_ptr.address);
(*f)->get_buffer(reinterpret_cast<uint8_t *>(dst), count);
return KTX_SUCCESS;
}
KTX_error_code ktx_skip(ktxStream *stream, const ktx_size_t count) {
Ref<FileAccess> *f = reinterpret_cast<Ref<FileAccess> *>(stream->data.custom_ptr.address);
for (ktx_size_t i = 0; i < count; ++i) {
(*f)->get_8();
}
return KTX_SUCCESS;
}
KTX_error_code ktx_write(ktxStream *stream, const void *src, const ktx_size_t size, const ktx_size_t count) {
Ref<FileAccess> *f = reinterpret_cast<Ref<FileAccess> *>(stream->data.custom_ptr.address);
(*f)->store_buffer(reinterpret_cast<const uint8_t *>(src), size * count);
return KTX_SUCCESS;
}
KTX_error_code ktx_getpos(ktxStream *stream, ktx_off_t *const offset) {
Ref<FileAccess> *f = reinterpret_cast<Ref<FileAccess> *>(stream->data.custom_ptr.address);
*offset = (*f)->get_position();
return KTX_SUCCESS;
}
KTX_error_code ktx_setpos(ktxStream *stream, const ktx_off_t offset) {
Ref<FileAccess> *f = reinterpret_cast<Ref<FileAccess> *>(stream->data.custom_ptr.address);
(*f)->seek(offset);
return KTX_SUCCESS;
}
KTX_error_code ktx_getsize(ktxStream *stream, ktx_size_t *const size) {
Ref<FileAccess> *f = reinterpret_cast<Ref<FileAccess> *>(stream->data.custom_ptr.address);
*size = (*f)->get_length();
return KTX_SUCCESS;
}
void ktx_destruct(ktxStream *stream) {
(void)stream;
}
static Ref<Image> load_from_file_access(Ref<FileAccess> f, Error *r_error) {
ktxStream ktx_stream;
ktx_stream.read = ktx_read;
ktx_stream.skip = ktx_skip;
ktx_stream.write = ktx_write;
ktx_stream.getpos = ktx_getpos;
ktx_stream.setpos = ktx_setpos;
ktx_stream.getsize = ktx_getsize;
ktx_stream.destruct = ktx_destruct;
ktx_stream.type = eStreamTypeCustom;
ktx_stream.data.custom_ptr.address = &f;
ktx_stream.data.custom_ptr.allocatorAddress = nullptr;
ktx_stream.data.custom_ptr.size = 0;
ktx_stream.readpos = 0;
ktx_stream.closeOnDestruct = false;
ktxTexture *ktx_texture;
KTX_error_code result = ktxTexture_CreateFromStream(&ktx_stream,
KTX_TEXTURE_CREATE_LOAD_IMAGE_DATA_BIT,
&ktx_texture);
if (result != KTX_SUCCESS) {
ERR_FAIL_V_MSG(Ref<Resource>(), "Invalid or unsupported KTX texture file.");
}
if (ktx_texture->numDimensions != 2) {
ktxTexture_Destroy(ktx_texture);
ERR_FAIL_V_MSG(Ref<Resource>(), "Unsupported non-2D KTX texture file.");
}
if (ktx_texture->isCubemap || ktx_texture->numFaces != 1) {
ktxTexture_Destroy(ktx_texture);
ERR_FAIL_V_MSG(Ref<Resource>(), "Unsupported cube map KTX texture file.");
}
if (ktx_texture->isArray) {
ktxTexture_Destroy(ktx_texture);
ERR_FAIL_V_MSG(Ref<Resource>(), "Unsupported array KTX texture file.");
}
uint32_t width = ktx_texture->baseWidth;
uint32_t height = ktx_texture->baseHeight;
uint32_t mipmaps = ktx_texture->numLevels;
Image::Format format;
bool srgb = false;
switch (ktx_texture->classId) {
case ktxTexture1_c:
switch (((ktxTexture1 *)ktx_texture)->glInternalformat) {
case GL_LUMINANCE:
format = Image::FORMAT_L8;
break;
case GL_LUMINANCE_ALPHA:
format = Image::FORMAT_LA8;
break;
case GL_SRGB8:
format = Image::FORMAT_RGB8;
srgb = true;
break;
case GL_SRGB8_ALPHA8:
format = Image::FORMAT_RGBA8;
srgb = true;
break;
case GL_R8:
case GL_R8UI:
format = Image::FORMAT_R8;
break;
case GL_RG8:
format = Image::FORMAT_RG8;
break;
case GL_RGB8:
format = Image::FORMAT_RGB8;
break;
case GL_RGBA8:
format = Image::FORMAT_RGBA8;
break;
case GL_RGBA4:
format = Image::FORMAT_RGBA4444;
break;
case GL_RGB565:
format = Image::FORMAT_RGB565;
break;
case GL_R32F:
format = Image::FORMAT_RF;
break;
case GL_RG32F:
format = Image::FORMAT_RGF;
break;
case GL_RGB32F:
format = Image::FORMAT_RGBF;
break;
case GL_RGBA32F:
format = Image::FORMAT_RGBAF;
break;
case GL_R16F:
format = Image::FORMAT_RH;
break;
case GL_RG16F:
format = Image::FORMAT_RGH;
break;
case GL_RGB16F:
format = Image::FORMAT_RGBH;
break;
case GL_RGBA16F:
format = Image::FORMAT_RGBAH;
break;
case GL_RGB9_E5:
format = Image::FORMAT_RGBE9995;
break;
case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
format = Image::FORMAT_DXT1;
break;
case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
format = Image::FORMAT_DXT3;
break;
case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
format = Image::FORMAT_DXT5;
break;
case GL_COMPRESSED_RED_RGTC1:
format = Image::FORMAT_RGTC_R;
break;
case GL_COMPRESSED_RG_RGTC2:
format = Image::FORMAT_RGTC_RG;
break;
case GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT:
format = Image::FORMAT_BPTC_RGBFU;
break;
case GL_COMPRESSED_RGBA_BPTC_UNORM:
format = Image::FORMAT_BPTC_RGBA;
break;
#if 0 // TODO: ETC compression is bogus.
case GL_ETC1_RGB8_OES:
format = Image::FORMAT_ETC;
break;
case GL_COMPRESSED_R11_EAC:
format = Image::FORMAT_ETC2_R11;
break;
case GL_COMPRESSED_SIGNED_R11_EAC:
format = Image::FORMAT_ETC2_R11S;
break;
case GL_COMPRESSED_RG11_EAC:
format = Image::FORMAT_ETC2_RG11;
break;
case GL_COMPRESSED_SIGNED_RG11_EAC:
format = Image::FORMAT_ETC2_RG11S;
break;
case GL_COMPRESSED_RGB8_ETC2:
format = Image::FORMAT_ETC2_RGB8;
break;
case GL_COMPRESSED_RGBA8_ETC2_EAC:
format = Image::FORMAT_ETC2_RGBA8;
break;
case GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2:
format = Image::FORMAT_ETC2_RGB8A1;
break;
#endif
case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR:
format = Image::FORMAT_ASTC_4x4;
break;
case GL_COMPRESSED_RGBA_ASTC_4x4_KHR:
format = Image::FORMAT_ASTC_4x4_HDR;
break;
case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR:
format = Image::FORMAT_ASTC_8x8;
break;
case GL_COMPRESSED_RGBA_ASTC_8x8_KHR:
format = Image::FORMAT_ASTC_8x8_HDR;
break;
default:
ktxTexture_Destroy(ktx_texture);
ERR_FAIL_V_MSG(Ref<Resource>(), "Unsupported format " + itos(((ktxTexture1 *)ktx_texture)->glInternalformat) + " of KTX1 texture file.");
}
break;
case ktxTexture2_c: {
ktxTexture2 *ktx_texture2 = reinterpret_cast<ktxTexture2 *>(ktx_texture);
if (ktx_texture2->vkFormat == VK_FORMAT_UNDEFINED) {
if (!ktxTexture2_NeedsTranscoding(ktx_texture2)) {
ktxTexture_Destroy(ktx_texture);
ERR_FAIL_V_MSG(Ref<Resource>(), "Invalid VK_FORMAT_UNDEFINED of KTX2 texture file.");
}
ktx_transcode_fmt_e ktxfmt;
switch (ktxTexture2_GetNumComponents(ktx_texture2)) {
case 1: {
if (ktxTexture2_GetOETF_e(ktx_texture2) == KHR_DF_TRANSFER_SRGB) { // TODO srgb native support
ktxfmt = KTX_TTF_RGBA32;
} else if (RS::get_singleton()->has_os_feature("rgtc")) {
ktxfmt = KTX_TTF_BC4_R;
} else {
ktxfmt = KTX_TTF_RGBA32;
}
break;
}
case 2: {
if (ktxTexture2_GetOETF_e(ktx_texture2) == KHR_DF_TRANSFER_SRGB) { // TODO srgb native support
ktxfmt = KTX_TTF_RGBA32;
} else if (RS::get_singleton()->has_os_feature("rgtc")) {
ktxfmt = KTX_TTF_BC5_RG;
} else {
ktxfmt = KTX_TTF_RGBA32;
}
break;
}
case 3: {
if (ktxTexture2_GetOETF_e(ktx_texture2) == KHR_DF_TRANSFER_SRGB) { // TODO: srgb native support
ktxfmt = KTX_TTF_RGBA32;
} else if (RS::get_singleton()->has_os_feature("bptc")) {
ktxfmt = KTX_TTF_BC7_RGBA;
} else if (RS::get_singleton()->has_os_feature("s3tc")) {
ktxfmt = KTX_TTF_BC1_RGB;
} else if (RS::get_singleton()->has_os_feature("etc2")) {
ktxfmt = KTX_TTF_ETC1_RGB;
} else {
ktxfmt = KTX_TTF_RGBA32;
}
break;
}
case 4: {
if (ktxTexture2_GetOETF_e(ktx_texture2) == KHR_DF_TRANSFER_SRGB) { // TODO srgb native support
ktxfmt = KTX_TTF_RGBA32;
} else if (RS::get_singleton()->has_os_feature("astc")) {
ktxfmt = KTX_TTF_ASTC_4x4_RGBA;
} else if (RS::get_singleton()->has_os_feature("bptc")) {
ktxfmt = KTX_TTF_BC7_RGBA;
} else if (RS::get_singleton()->has_os_feature("s3tc")) {
ktxfmt = KTX_TTF_BC3_RGBA;
} else if (RS::get_singleton()->has_os_feature("etc2")) {
ktxfmt = KTX_TTF_ETC2_RGBA;
} else {
ktxfmt = KTX_TTF_RGBA32;
}
break;
}
default: {
ktxTexture_Destroy(ktx_texture);
ERR_FAIL_V_MSG(Ref<Resource>(), "Invalid components of KTX2 texture file.");
}
}
result = ktxTexture2_TranscodeBasis(ktx_texture2, ktxfmt, 0);
if (result != KTX_SUCCESS) {
ktxTexture_Destroy(ktx_texture);
ERR_FAIL_V_MSG(Ref<Resource>(), "Failed to transcode KTX2 texture file.");
}
}
switch (ktx_texture2->vkFormat) {
case VK_FORMAT_R8_UNORM:
format = Image::FORMAT_L8;
break;
case VK_FORMAT_R8G8_UNORM:
format = Image::FORMAT_LA8;
break;
case VK_FORMAT_R8G8B8_SRGB:
format = Image::FORMAT_RGB8;
srgb = true;
break;
case VK_FORMAT_R8G8B8A8_SRGB:
format = Image::FORMAT_RGBA8;
srgb = true;
break;
case VK_FORMAT_R8_UINT:
format = Image::FORMAT_R8;
break;
case VK_FORMAT_R8G8_UINT:
format = Image::FORMAT_RG8;
break;
case VK_FORMAT_R8G8B8_UINT:
format = Image::FORMAT_RGB8;
break;
case VK_FORMAT_R8G8B8A8_UINT:
format = Image::FORMAT_RGBA8;
break;
case VK_FORMAT_R4G4B4A4_UNORM_PACK16:
format = Image::FORMAT_RGBA4444;
break;
case VK_FORMAT_R5G6B5_UNORM_PACK16:
format = Image::FORMAT_RGB565;
break;
case VK_FORMAT_R32_SFLOAT:
format = Image::FORMAT_RF;
break;
case VK_FORMAT_R32G32_SFLOAT:
format = Image::FORMAT_RGF;
break;
case VK_FORMAT_R32G32B32_SFLOAT:
format = Image::FORMAT_RGBF;
break;
case VK_FORMAT_R32G32B32A32_SFLOAT:
format = Image::FORMAT_RGBAF;
break;
case VK_FORMAT_R16_SFLOAT:
format = Image::FORMAT_RH;
break;
case VK_FORMAT_R16G16_SFLOAT:
format = Image::FORMAT_RGH;
break;
case VK_FORMAT_R16G16B16_SFLOAT:
format = Image::FORMAT_RGBH;
break;
case VK_FORMAT_R16G16B16A16_SFLOAT:
format = Image::FORMAT_RGBAH;
break;
case VK_FORMAT_E5B9G9R9_UFLOAT_PACK32:
format = Image::FORMAT_RGBE9995;
break;
case VK_FORMAT_BC1_RGB_UNORM_BLOCK:
case VK_FORMAT_BC1_RGBA_UNORM_BLOCK:
format = Image::FORMAT_DXT1;
break;
case VK_FORMAT_BC2_UNORM_BLOCK:
format = Image::FORMAT_DXT3;
break;
case VK_FORMAT_BC3_UNORM_BLOCK:
format = Image::FORMAT_DXT5;
break;
case VK_FORMAT_BC4_UNORM_BLOCK:
format = Image::FORMAT_RGTC_R;
break;
case VK_FORMAT_BC5_UNORM_BLOCK:
format = Image::FORMAT_RGTC_RG;
break;
case VK_FORMAT_BC6H_UFLOAT_BLOCK:
format = Image::FORMAT_BPTC_RGBFU;
break;
case VK_FORMAT_BC6H_SFLOAT_BLOCK:
format = Image::FORMAT_BPTC_RGBF;
break;
case VK_FORMAT_BC7_UNORM_BLOCK:
format = Image::FORMAT_BPTC_RGBA;
break;
#if 0 // TODO: ETC compression is bogus.
case VK_FORMAT_EAC_R11_UNORM_BLOCK:
format = Image::FORMAT_ETC2_R11;
break;
case VK_FORMAT_EAC_R11_SNORM_BLOCK:
format = Image::FORMAT_ETC2_R11S;
break;
case VK_FORMAT_EAC_R11G11_UNORM_BLOCK:
format = Image::FORMAT_ETC2_RG11;
break;
case VK_FORMAT_EAC_R11G11_SNORM_BLOCK:
format = Image::FORMAT_ETC2_RG11S;
break;
case VK_FORMAT_ETC2_R8G8B8_UNORM_BLOCK:
format = Image::FORMAT_ETC2_RGB8;
break;
case VK_FORMAT_ETC2_R8G8B8A8_UNORM_BLOCK:
format = Image::FORMAT_ETC2_RGBA8;
break;
case VK_FORMAT_ETC2_R8G8B8A1_UNORM_BLOCK:
format = Image::FORMAT_ETC2_RGB8A1;
break;
#endif
case VK_FORMAT_ASTC_4x4_SRGB_BLOCK:
format = Image::FORMAT_ASTC_4x4;
break;
case VK_FORMAT_ASTC_4x4_UNORM_BLOCK:
format = Image::FORMAT_ASTC_4x4_HDR;
break;
case VK_FORMAT_ASTC_8x8_SRGB_BLOCK:
format = Image::FORMAT_ASTC_8x8;
break;
case VK_FORMAT_ASTC_8x8_UNORM_BLOCK:
format = Image::FORMAT_ASTC_8x8_HDR;
break;
default:
ktxTexture_Destroy(ktx_texture);
ERR_FAIL_V_MSG(Ref<Resource>(), "Unsupported format " + itos(((ktxTexture2 *)ktx_texture)->vkFormat) + " of KTX2 texture file.");
break;
}
break;
}
default:
ktxTexture_Destroy(ktx_texture);
ERR_FAIL_V_MSG(Ref<Resource>(), "Unsupported version KTX texture file.");
break;
}
Vector<uint8_t> src_data;
// KTX use 4-bytes padding, don't use mipmaps if padding is effective
// TODO: unpad dynamically
int pixel_size = Image::get_format_pixel_size(format);
int pixel_rshift = Image::get_format_pixel_rshift(format);
int block = Image::get_format_block_size(format);
int minw, minh;
Image::get_format_min_pixel_size(format, minw, minh);
int w = width;
int h = height;
for (uint32_t i = 0; i < mipmaps; ++i) {
ktx_size_t mip_size = ktxTexture_GetImageSize(ktx_texture, i);
size_t bw = w % block != 0 ? w + (block - w % block) : w;
size_t bh = h % block != 0 ? h + (block - h % block) : h;
size_t s = bw * bh;
s *= pixel_size;
s >>= pixel_rshift;
if (mip_size != static_cast<ktx_size_t>(s)) {
if (!i) {
ktxTexture_Destroy(ktx_texture);
ERR_FAIL_V_MSG(Ref<Resource>(), "Unsupported padded KTX texture file.");
}
mipmaps = 1;
break;
}
w = MAX(minw, w >> 1);
h = MAX(minh, h >> 1);
}
for (uint32_t i = 0; i < mipmaps; ++i) {
ktx_size_t mip_size = ktxTexture_GetImageSize(ktx_texture, i);
ktx_size_t offset;
if (ktxTexture_GetImageOffset(ktx_texture, i, 0, 0, &offset) != KTX_SUCCESS) {
ktxTexture_Destroy(ktx_texture);
ERR_FAIL_V_MSG(Ref<Resource>(), "Invalid KTX texture file.");
}
int prev_size = src_data.size();
src_data.resize(prev_size + mip_size);
memcpy(src_data.ptrw() + prev_size, ktxTexture_GetData(ktx_texture) + offset, mip_size);
}
Ref<Image> img = memnew(Image(width, height, mipmaps - 1, format, src_data));
if (srgb) {
img->srgb_to_linear();
}
if (r_error) {
*r_error = OK;
}
ktxTexture_Destroy(ktx_texture);
return img;
}
Ref<Resource> ResourceFormatKTX::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) {
if (r_error) {
*r_error = ERR_CANT_OPEN;
}
Error err;
Ref<FileAccess> f = FileAccess::open(p_path, FileAccess::READ, &err);
if (f.is_null()) {
return Ref<Resource>();
}
Ref<FileAccess> fref(f);
if (r_error) {
*r_error = ERR_FILE_CORRUPT;
}
ERR_FAIL_COND_V_MSG(err != OK, Ref<Resource>(), "Unable to open KTX texture file '" + p_path + "'.");
Ref<Image> img = load_from_file_access(f, r_error);
Ref<ImageTexture> texture = ImageTexture::create_from_image(img);
return texture;
}
static Ref<Image> _ktx_mem_loader_func(const uint8_t *p_ktx, int p_size) {
Ref<FileAccessMemory> f;
f.instantiate();
f->open_custom(p_ktx, p_size);
Error err;
Ref<Image> img = load_from_file_access(f, &err);
ERR_FAIL_COND_V(err, Ref<Image>());
return img;
}
void ResourceFormatKTX::get_recognized_extensions(List<String> *p_extensions) const {
p_extensions->push_back("ktx");
p_extensions->push_back("ktx2");
}
bool ResourceFormatKTX::handles_type(const String &p_type) const {
return ClassDB::is_parent_class(p_type, "Texture2D");
}
String ResourceFormatKTX::get_resource_type(const String &p_path) const {
if (p_path.get_extension().to_lower() == "ktx" || p_path.get_extension().to_lower() == "ktx2") {
return "ImageTexture";
}
return "";
}
ResourceFormatKTX::ResourceFormatKTX() {
Image::_ktx_mem_loader_func = _ktx_mem_loader_func;
}
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