ae09b55a19
Also added an easier way to load native GLSL shaders. Extras: Had to fix no-cache for subresources in resource loader, it was not properly working, making shaders not properly reload. Note: The precommit hooks are broken because they don't seem to support enums from one class being used in another. Feel free to fix this after merging this PR.
114 lines
4.2 KiB
C++
114 lines
4.2 KiB
C++
/*************************************************************************/
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/* texture_loader_pkm.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) 2007-2020 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
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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_pkm.h"
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#include "core/os/file_access.h"
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#include <string.h>
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struct ETC1Header {
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char tag[6]; // "PKM 10"
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uint16_t format; // Format == number of mips (== zero)
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uint16_t texWidth; // Texture dimensions, multiple of 4 (big-endian)
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uint16_t texHeight;
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uint16_t origWidth; // Original dimensions (big-endian)
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uint16_t origHeight;
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};
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RES ResourceFormatPKM::load(const String &p_path, const String &p_original_path, Error *r_error, bool p_use_sub_threads, float *r_progress, bool p_no_cache) {
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if (r_error)
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*r_error = ERR_CANT_OPEN;
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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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FileAccessRef fref(f);
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if (r_error)
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*r_error = ERR_FILE_CORRUPT;
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ERR_FAIL_COND_V_MSG(err != OK, RES(), "Unable to open PKM texture file '" + p_path + "'.");
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// big endian
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f->set_endian_swap(true);
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ETC1Header h;
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f->get_buffer((uint8_t *)&h.tag, sizeof(h.tag));
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ERR_FAIL_COND_V_MSG(strncmp(h.tag, "PKM 10", sizeof(h.tag)), RES(), "Invalid or unsupported PKM texture file '" + p_path + "'.");
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h.format = f->get_16();
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h.texWidth = f->get_16();
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h.texHeight = f->get_16();
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h.origWidth = f->get_16();
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h.origHeight = f->get_16();
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Vector<uint8_t> src_data;
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uint32_t size = h.texWidth * h.texHeight / 2;
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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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int mipmaps = h.format;
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int width = h.origWidth;
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int height = h.origHeight;
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Ref<Image> img = memnew(Image(width, height, mipmaps, Image::FORMAT_ETC, 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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f->close();
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memdelete(f);
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return texture;
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}
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void ResourceFormatPKM::get_recognized_extensions(List<String> *p_extensions) const {
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p_extensions->push_back("pkm");
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}
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bool ResourceFormatPKM::handles_type(const String &p_type) const {
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return ClassDB::is_parent_class(p_type, "Texture2D");
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}
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String ResourceFormatPKM::get_resource_type(const String &p_path) const {
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if (p_path.get_extension().to_lower() == "pkm")
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return "ImageTexture";
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return "";
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}
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