mirror of
https://github.com/Relintai/pandemonium_engine.git
synced 2024-11-22 00:48:09 +01:00
525 lines
15 KiB
C++
525 lines
15 KiB
C++
/*************************************************************************/
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/* texture_packer.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* PANDEMONIUM ENGINE */
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/* https://github.com/Relintai/pandemonium_engine */
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/*************************************************************************/
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/* Copyright (c) 2022-present Péter Magyar. */
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/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
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/* Copyright (c) 2007-2022 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_packer.h"
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int TexturePacker::get_texture_flags() const {
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return _texture_flags;
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}
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void TexturePacker::set_texture_flags(const int flags) {
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_texture_flags = flags;
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}
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int TexturePacker::get_max_atlas_size() const {
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return _max_atlas_size;
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}
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void TexturePacker::set_max_atlas_size(const int size) {
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_max_atlas_size = size;
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}
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bool TexturePacker::get_keep_original_atlases() const {
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return _keep_original_atlases;
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}
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void TexturePacker::set_keep_original_atlases(const bool value) {
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_keep_original_atlases = value;
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}
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Color TexturePacker::get_background_color() const {
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return _background_color;
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}
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void TexturePacker::set_background_color(const Color &color) {
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_background_color = color;
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}
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int TexturePacker::get_margin() const {
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return _margin;
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}
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void TexturePacker::set_margin(const int margin) {
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_margin = margin;
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}
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Ref<AtlasTexture> TexturePacker::add_texture(const Ref<Texture> &texture) {
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ERR_FAIL_COND_V(!texture.is_valid(), Ref<AtlasTexture>());
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Ref<AtlasTexture> atlas_text = texture;
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if (atlas_text.is_valid()) {
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//we need to check differently this case
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for (int i = 0; i < _rects.size(); ++i) {
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rect_xywhf *r = _rects.get(i);
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Ref<Texture> t;
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Ref<AtlasTexture> at = texture;
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if (_keep_original_atlases && at.is_valid())
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t = r->atlas_texture;
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else
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t = r->original_texture;
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if (t == texture) {
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++(r->refcount);
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return r->atlas_texture;
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}
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}
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Ref<AtlasTexture> tex;
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tex.instance();
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tex->set_atlas(atlas_text->get_atlas());
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tex->set_region(atlas_text->get_region());
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rect_xywhf *rect = memnew(rect_xywhf);
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rect->refcount = 1;
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rect->w = atlas_text->get_region().size.x + 2 * _margin;
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rect->h = atlas_text->get_region().size.y + 2 * _margin;
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_rects.push_back(rect);
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if (_keep_original_atlases) {
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rect->original_texture = tex;
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rect->atlas_texture = atlas_text;
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return atlas_text;
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} else {
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rect->original_texture = atlas_text;
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rect->atlas_texture = tex;
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return tex;
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}
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}
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for (int i = 0; i < _rects.size(); ++i) {
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rect_xywhf *r = _rects.get(i);
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if (r->original_texture == texture) {
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++(r->refcount);
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return r->atlas_texture;
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}
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}
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Ref<AtlasTexture> tex;
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tex.instance();
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//Temp setup, so the texture is usable even while the atlases are generating.
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tex->set_atlas(texture);
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tex->set_region(Rect2(0, 0, texture->get_width(), texture->get_height()));
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rect_xywhf *rect = memnew(rect_xywhf);
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rect->refcount = 1;
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rect->original_texture = texture;
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rect->atlas_texture = tex;
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rect->w = texture->get_width() + 2 * _margin;
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rect->h = texture->get_height() + 2 * _margin;
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_rects.push_back(rect);
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return tex;
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}
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Ref<AtlasTexture> TexturePacker::get_texture(const Ref<Texture> &texture) {
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for (int i = 0; i < _rects.size(); ++i) {
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rect_xywhf *r = _rects.get(i);
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Ref<Texture> t;
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Ref<AtlasTexture> at = texture;
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if (_keep_original_atlases && at.is_valid())
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t = r->atlas_texture;
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else
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t = r->original_texture;
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if (t == texture) {
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return _rects.get(i)->atlas_texture;
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}
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}
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return Ref<Texture>();
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}
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Ref<AtlasTexture> TexturePacker::get_texture_index(const int index) {
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ERR_FAIL_INDEX_V(index, _rects.size(), Ref<AtlasTexture>());
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return _rects.get(index)->atlas_texture;
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}
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Ref<Texture> TexturePacker::get_original_texture(const int index) {
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ERR_FAIL_INDEX_V(index, _rects.size(), Ref<Texture>());
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return _rects.get(index)->original_texture;
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}
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bool TexturePacker::contains_texture(const Ref<Texture> &texture) {
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for (int i = 0; i < _rects.size(); ++i) {
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rect_xywhf *r = _rects.get(i);
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Ref<Texture> t;
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Ref<AtlasTexture> at = texture;
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if (_keep_original_atlases && at.is_valid())
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t = r->atlas_texture;
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else
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t = r->original_texture;
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if (t == texture) {
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return true;
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}
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}
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return false;
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}
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bool TexturePacker::unref_texture_index(const int index) {
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ERR_FAIL_INDEX_V(index, _rects.size(), false);
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rect_xywhf *r = _rects.get(index);
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int rc = --(r->refcount);
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if (rc <= 0) {
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_rects.remove(index);
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r->original_texture.unref();
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r->atlas_texture.unref();
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memdelete(r);
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return true;
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}
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return false;
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}
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bool TexturePacker::unref_texture(const Ref<Texture> &texture) {
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for (int i = 0; i < _rects.size(); ++i) {
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rect_xywhf *r = _rects.get(i);
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Ref<Texture> t;
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Ref<AtlasTexture> at = texture;
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if (_keep_original_atlases && at.is_valid())
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t = r->atlas_texture;
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else
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t = r->original_texture;
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if (t == texture) {
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int rc = --(r->refcount);
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if (rc <= 0) {
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_rects.remove(i);
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r->original_texture.unref();
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r->atlas_texture.unref();
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memdelete(r);
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return true;
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}
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return false;
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}
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}
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return false;
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}
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void TexturePacker::remove_texture_index(const int index) {
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ERR_FAIL_INDEX(index, _rects.size());
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rect_xywhf *r = _rects.get(index);
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r->original_texture.unref();
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r->atlas_texture.unref();
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memdelete(r);
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}
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void TexturePacker::remove_texture(const Ref<Texture> &texture) {
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for (int i = 0; i < _rects.size(); ++i) {
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rect_xywhf *r = _rects.get(i);
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Ref<Texture> t;
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Ref<AtlasTexture> at = texture;
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if (_keep_original_atlases && at.is_valid())
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t = r->atlas_texture;
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else
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t = r->original_texture;
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if (t == texture) {
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_rects.remove(i);
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r->original_texture.unref();
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r->atlas_texture.unref();
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memdelete(r);
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return;
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}
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}
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}
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int TexturePacker::get_texture_count() {
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return _rects.size();
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}
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void TexturePacker::clear() {
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for (int i = 0; i < _rects.size(); ++i) {
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rect_xywhf *r = _rects.get(i);
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r->atlas_texture.unref();
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r->original_texture.unref();
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memdelete(r);
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}
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_rects.clear();
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for (int i = 0; i < _generated_textures.size(); ++i) {
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_generated_textures.get(i).unref();
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}
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_generated_textures.clear();
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}
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Ref<ImageTexture> TexturePacker::get_generated_texture(const int index) {
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ERR_FAIL_INDEX_V(index, _generated_textures.size(), Ref<ImageTexture>());
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return _generated_textures.get(index);
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}
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int TexturePacker::get_generated_texture_count() {
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return _generated_textures.size();
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}
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void TexturePacker::merge() {
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std::vector<bin> bins;
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if (pack(_rects.ptr(), _rects.size(), _max_atlas_size, false, bins)) {
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_generated_textures.clear();
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_generated_textures.resize(bins.size());
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for (uint32_t i = 0; i < bins.size(); ++i) {
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bin b = bins[i];
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PoolByteArray data;
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data.resize(b.size.w * b.size.h * 4);
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//Setup background color
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uint8_t cr = _background_color.r * 255.0;
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uint8_t cg = _background_color.g * 255.0;
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uint8_t cb = _background_color.b * 255.0;
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uint8_t ca = _background_color.a * 255.0;
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for (int j = 0; j < data.size(); j += 4) {
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data.set(j, cr);
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data.set(j + 1, cg);
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data.set(j + 2, cb);
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data.set(j + 3, ca);
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}
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//Process rects
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for (uint32_t j = 0; j < b.rects.size(); ++j) {
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rect_xywhf *r = b.rects[j];
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Ref<Texture> otext = r->original_texture;
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Ref<AtlasTexture> aotext = otext;
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int rect_pos_x = 0;
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int rect_pos_y = 0;
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if (aotext.is_valid()) {
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otext = aotext->get_atlas();
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Rect2 rect = aotext->get_region();
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rect_pos_x = rect.position.x + 0.5;
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rect_pos_y = rect.position.y + 0.5;
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}
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ERR_CONTINUE(!otext.is_valid());
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Ref<Image> img = otext->get_data();
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ERR_CONTINUE(!img.is_valid());
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int img_width = img->get_width();
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PoolByteArray image_data = img->get_data();
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int input_format_offset = get_offset_for_format(img->get_format());
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ERR_CONTINUE_MSG(input_format_offset == 0, "Format is not implemented, Skipping!");
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int h_wo_margin = r->h - 2 * _margin;
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for (int y = 0; y < h_wo_margin; ++y) {
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int orig_img_indx = (rect_pos_y + y) * img_width * input_format_offset + rect_pos_x * input_format_offset;
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int start_indx = (r->y + y + _margin) * b.size.w * 4 + (r->x + _margin) * 4;
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int row_width = (r->w - 2 * _margin);
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for (int x = 0; x < row_width; ++x) {
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for (int sx = 0; sx < input_format_offset; ++sx) {
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data.set(start_indx + (x * 4) + sx, image_data[orig_img_indx + sx + (x * input_format_offset)]);
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}
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}
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}
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}
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Ref<Image> image;
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image.instance();
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image->create(b.size.w, b.size.h, false, Image::FORMAT_RGBA8, data);
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Ref<ImageTexture> texture;
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texture.instance();
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texture->create_from_image(image, _texture_flags);
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_generated_textures.set(i, texture);
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for (uint32_t j = 0; j < b.rects.size(); ++j) {
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rect_xywhf *r = b.rects[j];
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Ref<AtlasTexture> at = r->atlas_texture;
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at->set_atlas(texture);
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at->set_region(Rect2(r->x + _margin, r->y + _margin, r->w - 2 * _margin, r->h - 2 * _margin));
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}
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}
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}
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}
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int TexturePacker::get_offset_for_format(const Image::Format format) {
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switch (format) {
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case Image::FORMAT_RGB8:
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return 3;
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case Image::FORMAT_RGBA8:
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return 4;
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case Image::FORMAT_L8:
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case Image::FORMAT_LA8:
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case Image::FORMAT_R8:
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case Image::FORMAT_RG8:
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case Image::FORMAT_RGBA4444:
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case Image::FORMAT_RF:
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case Image::FORMAT_RGF:
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case Image::FORMAT_RGBF:
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case Image::FORMAT_RGBAF:
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case Image::FORMAT_RH:
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case Image::FORMAT_RGH:
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case Image::FORMAT_RGBH:
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case Image::FORMAT_RGBAH:
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case Image::FORMAT_RGBE9995:
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case Image::FORMAT_DXT1:
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case Image::FORMAT_DXT3:
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case Image::FORMAT_DXT5:
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case Image::FORMAT_RGTC_R:
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case Image::FORMAT_RGTC_RG:
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case Image::FORMAT_BPTC_RGBA:
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case Image::FORMAT_BPTC_RGBF:
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case Image::FORMAT_BPTC_RGBFU:
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case Image::FORMAT_PVRTC2:
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case Image::FORMAT_PVRTC2A:
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case Image::FORMAT_PVRTC4:
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case Image::FORMAT_PVRTC4A:
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case Image::FORMAT_ETC:
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case Image::FORMAT_ETC2_R11:
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case Image::FORMAT_ETC2_R11S:
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case Image::FORMAT_ETC2_RG11:
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case Image::FORMAT_ETC2_RG11S:
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case Image::FORMAT_ETC2_RGB8:
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case Image::FORMAT_ETC2_RGBA8:
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case Image::FORMAT_ETC2_RGB8A1:
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case Image::FORMAT_RGBA5551:
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case Image::FORMAT_MAX:
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return 0;
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}
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return 0;
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}
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TexturePacker::TexturePacker() {
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_texture_flags = Texture::FLAG_MIPMAPS | Texture::FLAG_FILTER;
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_max_atlas_size = 1024;
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_keep_original_atlases = false;
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_margin = 0;
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}
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TexturePacker::~TexturePacker() {
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clear();
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}
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void TexturePacker::_bind_methods() {
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ClassDB::bind_method(D_METHOD("get_texture_flags"), &TexturePacker::get_texture_flags);
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ClassDB::bind_method(D_METHOD("set_texture_flags", "flags"), &TexturePacker::set_texture_flags);
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ADD_PROPERTY(PropertyInfo(Variant::INT, "texture_flags", PROPERTY_HINT_FLAGS, "Mipmaps,Repeat,Filter,Anisotropic Linear,Convert to Linear,Mirrored Repeat,Video Surface"), "set_texture_flags", "get_texture_flags");
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ClassDB::bind_method(D_METHOD("get_max_atlas_size"), &TexturePacker::get_max_atlas_size);
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ClassDB::bind_method(D_METHOD("set_max_atlas_size", "size"), &TexturePacker::set_max_atlas_size);
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ADD_PROPERTY(PropertyInfo(Variant::INT, "max_atlas_size"), "set_max_atlas_size", "get_max_atlas_size");
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ClassDB::bind_method(D_METHOD("get_keep_original_atlases"), &TexturePacker::get_keep_original_atlases);
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ClassDB::bind_method(D_METHOD("set_keep_original_atlases", "value"), &TexturePacker::set_keep_original_atlases);
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ADD_PROPERTY(PropertyInfo(Variant::BOOL, "keep_original_atlases"), "set_keep_original_atlases", "get_keep_original_atlases");
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ClassDB::bind_method(D_METHOD("get_background_color"), &TexturePacker::get_background_color);
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ClassDB::bind_method(D_METHOD("set_background_color", "color"), &TexturePacker::set_background_color);
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ADD_PROPERTY(PropertyInfo(Variant::COLOR, "background_color"), "set_background_color", "get_background_color");
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ClassDB::bind_method(D_METHOD("get_margin"), &TexturePacker::get_margin);
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ClassDB::bind_method(D_METHOD("set_margin", "size"), &TexturePacker::set_margin);
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ADD_PROPERTY(PropertyInfo(Variant::INT, "margin"), "set_margin", "get_margin");
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ClassDB::bind_method(D_METHOD("add_texture", "texture"), &TexturePacker::add_texture);
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ClassDB::bind_method(D_METHOD("get_texture", "texture"), &TexturePacker::get_texture);
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ClassDB::bind_method(D_METHOD("get_texture_index", "index"), &TexturePacker::get_texture_index);
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ClassDB::bind_method(D_METHOD("get_original_texture", "index"), &TexturePacker::get_original_texture);
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ClassDB::bind_method(D_METHOD("unref_texture_index", "index"), &TexturePacker::unref_texture_index);
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ClassDB::bind_method(D_METHOD("unref_texture", "texture"), &TexturePacker::unref_texture);
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ClassDB::bind_method(D_METHOD("remove_texture_index", "index"), &TexturePacker::remove_texture_index);
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ClassDB::bind_method(D_METHOD("remove_texture", "texture"), &TexturePacker::remove_texture);
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ClassDB::bind_method(D_METHOD("get_texture_count"), &TexturePacker::get_texture_count);
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ClassDB::bind_method(D_METHOD("clear"), &TexturePacker::clear);
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ClassDB::bind_method(D_METHOD("get_generated_texture", "index"), &TexturePacker::get_generated_texture);
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ClassDB::bind_method(D_METHOD("get_generated_texture_count"), &TexturePacker::get_generated_texture_count);
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ClassDB::bind_method(D_METHOD("merge"), &TexturePacker::merge);
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}
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